WO2023142856A1 - Cavity tube adjusting instrument - Google Patents

Abstract

A cavity tube adjusting instrument (1), comprising a body (10), and a first surrounding piece (20) and a second surrounding piece (30) which are movably connected to the body (10), wherein at least one of the first surrounding piece (20) and the second surrounding piece (30) is provided with a locking structure (40), such that the first surrounding piece (20) and the second surrounding piece (30) are combined with each other, so as to form a surrounding portion (1-50) surrounding a target cavity tube (2) in the circumferential direction. The first surrounding piece (20) and the second surrounding piece (30) can synchronously reciprocate relative to the body (10), so as to adjust the cross-sectional area of the surrounding portion (1-50), and to enable the cross section of the target cavity tube (2) to generate different degrees of deformation according to different cross-sectional areas of the surrounding portion (1-50). Thus, the instrument (1) can conveniently and accurately regulate and control the liquid flow rate in the target cavity tube (2), and has the advantage of short operation stroke.

Description

lumen adjustment device

This application requires submission of a Chinese patent application with the application number 202210114586.9 to the China Patent Office on January 30, 2022. 202210114582.0, the priority of the Chinese patent application with the title of invention "cavity adjustment device", the entire content of which is incorporated in this application by reference.

technical field

The embodiments of the present application relate to the technical field of medical devices, in particular to a lumen adjustment device.

Background technique

In surgical operations on solid organs with rich blood vessels, intraoperative bleeding control is often the key to the success of the operation: on the one hand, excessive bleeding is often the main cause of serious complications; on the other hand, prolonged Blood flow occlusion or ischemia-reperfusion can also lead to serious organ damage. Both states can lead to the patient's death. Therefore, bleeding control has become a key technical point that limits the development of surgical techniques.

Therefore, with the development of minimally invasive surgery, laparoscopic hepatectomy puts forward higher requirements on bleeding control technology during the operation.

Contents of the invention

In view of the above problems, the present application provides a lumen adjustment instrument to overcome the above problems or at least partly solve the above problems.

An embodiment of the present application provides a lumen adjustment instrument, which includes: a body; a first surround and a second surround, which are respectively connected to the body; a locking structure; wherein the first surround and at least one of the second surrounding member is provided with the locking structure, which allows the first surrounding member and the second surrounding member to be combined with each other to form a surrounding portion that circumferentially surrounds the target lumen; the At least one of the first surrounding part and the second surrounding part can reciprocate relative to the body to adjust the cross-sectional area of the surrounding part and make the cross-section of the target lumen according to the surrounding part. The different cross-sectional areas of the parts produce different degrees of deformation.

Optionally, the first surrounding member and the second surrounding member are respectively movably connected to the body, and both the first surrounding member and the second surrounding member can reciprocate synchronously relative to the body.

Optionally, the body is a hollow structure and has a distal end; the first surrounding member and the second surrounding member can axially move synchronously relative to the body along a first direction, so that the first surrounding A portion of each of the first member and the second surrounding member is moved from the interior of the body via the distal end to the exterior of the body such that the cross-sectional area of the surrounding portion circumferentially surrounding the target lumen increases; or , the first surrounding member and the second surrounding member can axially move synchronously relative to the body in a second direction opposite to the first direction, so that the first surrounding member and the second surrounding member A portion of each surrounding member enters from the exterior of the body via the distal end into the interior of the body such that the cross-sectional area of the surrounding portion circumferentially surrounding the target lumen decreases.

Optionally, the locking structure includes a passing structure; wherein, one of the first surrounding member and the second surrounding member is provided with the passing structure for moving through the first surrounding member and the other of the second surrounding elements; and wherein, the piercing structure can be deformed by an external force, so as to position the first surrounding element or the second surrounding element movably threaded therein.

Optionally, the locking structure includes a first locking unit and a second locking unit respectively disposed on the first surrounding member and the second surrounding member.

Optionally, the first locking unit includes a first positioning portion, and the second locking unit includes a first penetrating portion and a locking portion that communicate with each other; wherein, the first locking portion provided with the first positioning portion The surrounding part or the second surrounding part can be movably threaded in the first passing part, and can enter the locking part through the first passing part, so that the first positioning part abuts against the locking part. One side or two opposite sides of the locking portion, so that the first surrounding piece and the second surrounding piece form the surrounding portion.

Optionally, the first locking unit includes a second positioning portion, and the second locking unit includes a second threading portion switchable between a positioning state and a non-positioning state; wherein, when the second threading portion When the part is in the non-positioning state, the first surrounding part or the second surrounding part provided with the second positioning part can pass through it; when the second passing part is in the positioning state, the second positioning part can be made to abut against one side or two opposite sides of the second penetrating part, so that the first surrounding part and the second surrounding part form the surrounding part; The second locking unit further includes a passing passage communicating with the second passing portion, so that the first surrounding member or the second surrounding member provided with the second positioning portion enters through the passing passage The second piercing portion or exits from the second piercing portion.

Optionally, the first positioning part or the second positioning part includes at least one positioning protrusion distributed on the first surrounding part or the second surrounding part for the first surrounding part and the second positioning part to The second surrounding member constitutes the surrounding portion with different cross-sectional areas; the positioning protrusion may include a circular cross-section, a rectangular cross-section or a tapered cross-section.

Optionally, the first surrounding part or the second surrounding part provided with the second locking unit further includes an operating part adjacent to the second locking unit, and the first surrounding part can be positioned by the operating part. Two locking units are used for combining with the first surrounding part or the second surrounding part provided with the first locking unit.

Optionally, the instrument further includes an identification unit provided on at least one of the body, the first surrounding member, and the second surrounding member for identifying the first surrounding member and the second surrounding member. The moving distance of the surround relative to the body.

Optionally, the instrument further comprises an assembly located in the body and connected to the first surround and the second surround respectively; and wherein the instrument further comprises a driving structure positioned on the The proximal end of the main body is connected to the assembly, and is used to control the axial movement of the assembly relative to the main body, so that the first surrounding part and the second surrounding part move synchronously relative to the main body .

Optionally, the first surrounding part is fixedly connected to the body, the second surrounding part is movably connected to the body, and the second surrounding part can reciprocate relative to the body.

Optionally, the first surrounding part includes a fixed surrounding section exposed to the body; the second surrounding part includes a movable surrounding section and a movement adjustment part connected to the movable surrounding section and movably worn in the body. section, the movement adjustment section can move axially relative to the body along the first direction, so that a part of the movable surrounding section inside the body is exposed to the body through the distal end, so that the circumferential circle The cross-sectional area of the surrounding portion of the target lumen is increased; alternatively, the movement adjustment section can move axially relative to the body along a second direction opposite to the first direction, so as to expose the A part of the movable surrounding section of the body enters the interior of the body through the distal end, so that the cross-sectional area of the surrounding portion surrounding the target lumen in the circumferential direction decreases; the fixed surrounding section and the movable surrounding section At least one of the segments is provided with the locking structure for providing the combination of the fixed surrounding segment and the movable surrounding segment to form the surrounding portion exposed to the body.

Optionally, the locking structure includes a passing structure; wherein, one of the fixed surrounding section and the movable surrounding section is provided with the passing structure, so that the fixed surrounding section and the movable surrounding section can be movably passed through. The other one of the movable surrounding segments; and wherein, the piercing structure can be deformed by an external force, so as to position the fixed surrounding segment or the movable surrounding segment pierced therein.

Optionally, the locking structure includes: a first locking unit disposed on one of the fixed surrounding segment and the movable surrounding segment; a second locking unit disposed on the fixed surrounding segment and the movable surrounding segment The other one in the active surround segment.

Optionally, the first locking unit includes a first positioning portion, and the second locking unit includes a first penetrating portion and a locking portion that communicate with each other; wherein, the fixed surrounding area provided with the first positioning portion segment or the movable surrounding segment, which can be movably threaded in the first piercing portion and can enter the locking portion through the first piercing portion, so that the first positioning portion abuts against the locking portion One side or two opposite sides for the fixed surrounding segment and the movable surrounding segment to form the surrounding part.

Optionally, the first locking unit includes a second positioning portion, and the second locking unit includes a second threading portion switchable between a positioning state and a non-positioning state; wherein, when the second threading portion When the part is in the non-positioning state, the fixed surrounding segment or the movable surrounding segment provided with the second positioning part can be movably inserted therein; when the second passing part is in the positioning state , the second positioning part can be made to abut against one side or two opposite sides of the second penetrating part, so that the fixed surrounding section and the movable surrounding section constitute the surrounding part; the second locking The unit also includes a passing passage communicating with the second passing portion, so that the fixed surrounding section or the movable surrounding section provided with the second positioning portion enters the second passing passage through the passing passage. setting part or withdraw from the second passing part.

Optionally, the first positioning portion or the second positioning portion includes at least one positioning protrusion distributed on the fixed surrounding segment or the movable surrounding segment for the fixed surrounding segment and the movable The surrounding segments constitute the surrounding parts with different cross-sectional areas; wherein, the positioning protrusions may include rectangular cross-sections, conical cross-sections, and circular cross-sections.

Optionally, the instrument further includes an identification unit provided on the body and/or the second surrounding member, for identifying the moving distance of the second surrounding member relative to the main body.

Optionally, the instrument further includes a driving structure, which is located at the proximal end of the body and connected to the second surround, for controlling the movement of the second surround relative to the body.

To sum up, the lumen adjustment instrument of this embodiment can not only accurately and quickly adjust the cross-sectional area of the surrounding part by controlling the first surrounding part and the second surrounding part to reciprocate synchronously relative to the main body, so as to achieve precise control of the target lumen The purpose of the liquid flow rate in the tube, and has the advantages of short operation stroke, high closing efficiency, and small volume of the device.

The lumen adjusting device of this embodiment can precisely and quickly adjust the cross-sectional area of the surrounding part by controlling the reciprocating movement of the second surrounding part relative to the main body, so as to achieve the purpose of precisely controlling the liquid flow rate in the target lumen.

Furthermore, the lumen adjustment instrument in this embodiment can conveniently realize the positioning and enveloping operation of the surrounding portion relative to the target lumen through the design of the locking structure, so as to facilitate the smooth execution of the operation.

The lumen adjusting device of this embodiment uses the driving structure to drive the surrounding structure to reciprocate relative to the main body, and can accurately and quickly adjust the cross-sectional area of the surrounding part, thereby achieving the purpose of precisely controlling the liquid flow rate in the target lumen.

Furthermore, by utilizing the locking structure separately provided on the first surrounding part and the second surrounding part, the first surrounding part and the second surrounding part can be combined with each other to form surrounding parts with different cross-sectional areas, which has the advantages of convenient operation and combination The advantage of high stability is conducive to the smooth execution of the operation.

In addition, by setting a plurality of stoppers on the driving body, the driving member can be positioned at different positions of the driving body, so as to adjust the moving position of the first surrounding member and/or the second surrounding member relative to the main body, and achieve adjustment The purpose of the cross-sectional area of the surrounding part.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments described in the embodiments of this application, and those skilled in the art can also obtain other drawings based on these drawings.

FIG. 1-1 to FIG. 1-3 are schematic diagrams of the overall structure of different embodiments of the lumen adjustment device of the present application.

1-4 to 1-14 are partial structural schematic diagrams of different embodiments of the lumen adjustment device of the present application.

1-15 are schematic diagrams of application examples of the lumen adjustment device of the present application.

1-16 are partial structural schematic diagrams of another embodiment of the lumen adjustment device of the present application.

FIG. 2-1 to FIG. 2-3 are schematic diagrams of the overall structure of different embodiments of the lumen adjustment device of the present application.

Figures 2-4 and Figures 2-12 are partial structural schematic diagrams of different embodiments of the lumen adjustment device of the present application.

2-13 are schematic diagrams of application examples of the lumen adjustment device of the present application.

Component number

1: lumen adjustment instrument; 2: target lumen; 10: body; 12: distal end; 14: proximal end; 20: first surrounding piece; 30: second surrounding piece; 40: locking structure; 42: piercing Structure; 44: pressing tube; 46: piercing ring; 48: first locking unit; 482: first positioning part; 484: second positioning part; 50: second locking unit; 502: first piercing part; 504: locking part; 506: second piercing part; 5062: elastic stop unit; 508: piercing channel; 510: cable tie structure; 62: positioning convex part; 64: operation part; 642: anti-slip unit; 66: Puncture structure; 68: identification unit; 70: assembly; 72: driving structure; 74: bending control part; 76: elastic structure; 1-1: lumen adjustment device; 1-2: target lumen; 1-10: Main body; 1-12: distal end; 1-14: proximal end; 1-20: first surrounding piece; 1-22: fixed surrounding section; 1-24: operating part; 1-242: anti-slip unit; 1-30 : second surrounding part; 1-32: movable surrounding section; 1-34: moving adjustment section; 1-36: piercing structure; 1-40: locking structure; 1-42: piercing structure; 1-422: pressing Tube structure; 1-424: ring structure; 1-426: piercing hole; 1-44: first locking unit; 1-442: first positioning part; 1-442a: positioning convex part; 1-444: second Two positioning parts 1-46: second locking unit; 1-462: first piercing part; 1-464: locking part; 1-466: second piercing part; 1-468: piercing channel; 1-48 : cable tie structure; 1-50: surrounding part; 1-60: identification unit; 1-70: driving structure.

specific embodiment

In order to enable those skilled in the art to better understand the technical solutions in the embodiments of the present application, the following will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the embodiments of the present application shall fall within the protection scope of the embodiments of the present application.

When operating on solid organs with rich blood vessels (such as liver, kidney, spleen), intraoperative bleeding control is often the key to the success of the operation: on the one hand, excessive bleeding often leads to serious complications On the other hand, long-term blood flow occlusion or ischemia-reperfusion process can also cause serious damage to organs. Both states can lead to the patient's death. Therefore, bleeding control has become a key technical point that limits the development of surgical techniques. Today, as the proportion of minimally invasive surgery continues to increase, more requirements are placed on bleeding control technology.

Modern surgical liver surgery has always been developed with minimally invasive operations such as laparoscopy. However, the conventional vascular occlusion technology, which was directly applied in the laparoscopic environment, could not be used due to the limitations of the operating environment, technology, and equipment. As a result, the safety of laparoscopic hepatectomy, which has therapeutic advantages, cannot be as technically guaranteed as laparotomy.

Especially for the bleeding control of complex liver resections near large blood vessels and special parts, high-frequency electrosurgical workstations (energy platforms), ultrasonic scalpels, and Ligasure vascular closure devices cannot control hemostasis. Traditional hepatic vascular banding controls and releases Advanced technology is still an indispensable basic technical guarantee for the smooth operation of the operation. Therefore, laparoscopic hepatectomy and the application of new surgical medical devices have not reduced the reliance on traditional bleeding control techniques.

The existing blood flow control device mainly wraps the blood vessel, fixes the free end of the blocking band on the sheath tube, and then realizes the control of the hepatic portal blood flow through the rear-end control part.

However, the operation of this blood flow control device still has the following deficiencies: 1. After the blocking band bypasses the blood vessel, because the fixing device of the blocking band is located inside the sheath tube, the sheath tube will be in the process of being surrounded by the blocking band. A change in position occurred, resulting in difficulties in the fixation of the blocking band. 2. The blocking band is long. After wrapping the blood vessel, the doctor needs to fix the blocking band on the sheath, so the blocking band cannot fit too tightly with the hilar blood vessels, which causes the blocking band to be in contact with the hilar blood vessel. The gap after vessel fixation is larger and results in a correspondingly longer sheath design. 3. Usually, the hilum of a patient undergoing liver surgery will adhere to other tissues around the hilum, which will cause the blocking band to not easily pass through the tissue gap around the hilum during the second liver surgery, and thus cannot align the hilum Vascular wrapping.

According to the summary study of vascular occlusion techniques in laparoscopic surgery, blood vessel clamping and enveloping are the main methods of occluding blood vessels to control bleeding.

Chinese Utility Model Patent No. 212939836U proposes a technical solution to block blood vessels by clamping. However, this solution still has the following problems: for thicker blood vessels in the abdominal cavity, it may be difficult to cover the blood vessels by clamping to control the blood flow of the blood vessels. The circumference may not achieve the purpose of effectively controlling the blood flow; the head of the clamp does not have enough curvature to clamp the special target blood vessel, and the curvature is too large to pass through the endoscopic operation hole, limiting its Applications under laparoscopy.

Chinese Utility Model Patent No. 210631257U proposes a technical solution for blocking blood vessels with a single wrapping tape. The technical problems of this solution include: the stroke is large after tightening, the volume of the instrument is large, and the laparoscope is occupied. Surgical space, and the closed-loop nodes formed after wrapping remain unchanged. Doctors cannot solve the problem of insufficient or too tight vascular wrapping by adjusting the closing point, which will cause inconvenience to the operation.

Therefore, how to provide a new blood flow control technology that can change the traditional method of "occlusion first and then operation" to "operation first and then block according to needs", can "long time, difficult to adjust blood vessel occlusion in time" "Changed to "capable of real-time controlled release of vascular blood flow occlusion", and changed "multiple people cooperate to complete the occlusion operation" to "single person can complete the operation", thereby reducing labor costs, ensuring the safety of patients during the perioperative period, and reducing The risk of surgery, reducing the technical requirements of the surgeon, and making it easier for the surgeon to perform blocking operations in a laparoscopic environment have become problems that need to be solved urgently.

The specific implementation of the embodiment of the present application will be further described below in conjunction with the accompanying drawings of the embodiment of the present application.

As shown in FIGS. 1-1 to 1-3 , the lumen adjustment device 1 of the present application mainly includes a body 10 , a first surrounding part 20 , a second surrounding part 30 , and a locking structure 40 .

Wherein, at least one of the first surrounding part 20 and the second surrounding part 30 can be provided with a locking structure 40, which can be used for the first surrounding part 20 and the second surrounding part 30 to be combined with each other to form a circumferentially surrounding target lumen 2. Surrounding portion 50 (see FIGS. 1-4 and 1-5).

For example, in the embodiment shown in FIGS. 1-4, the locking structure 40 can only be provided on the second surrounding member 30, and in the embodiment shown in FIGS. 1-5, the locking structure 40 can be separately provided on the first surrounding member 20 and On the second surrounding part 30 , in the embodiment shown in FIGS. 1-6 , the locking structure 40 may be provided only on the first surrounding part 20 .

Optionally, the target lumen 2 can be a lumen with an internal lumen that can be deformed, including but not limited to various biological tissue lumens such as blood vessels, bile ducts, lymphatic vessels, trachea, ureter, and digestive system lumens.

In this embodiment, the first surrounding member 20 and the second surrounding member 30 can reciprocate synchronously relative to the main body 10 to adjust the cross-sectional area of the surrounding portion 50 and make the cross-section of the target lumen 2 vary according to the surrounding portion 50 The cross-sectional area produces different degrees of deformation.

Specifically, when the cross-sectional area of the surrounding portion 50 surrounding the target lumen 2 in the circumferential direction is larger, the target lumen 2 is subjected to a smaller force from the surrounding portion 50, and the degree of deformation of the target lumen 2 is also smaller. The fluid flow rate in the lumen 2 is also faster; on the contrary, when the cross-sectional area of the surrounding portion 50 surrounding the target lumen 2 is smaller, the target lumen 2 is subjected to the greater force of the surrounding portion 50, and the target lumen 2, the greater the degree of deformation, the slower the fluid flow rate in the target lumen 2.

In this embodiment, the body 10 can be hollow and has a distal end 12 (eg, a distal opening) for the first surrounding member 20 and the second surrounding member 30 to extend from the inside of the body 10 to the outside of the body 10 .

Specifically, referring to FIGS. 1-2 and 1-3, the first surrounding member 20 and the second surrounding member 30 can move axially and synchronously relative to the body 10 along a first direction (such as the F1 direction shown in FIGS. 1-2 ). , so that a part of each of the first surrounding member 20 and the second surrounding member 30 can move from the inside of the body 10 to the outside of the body 10 via the distal end 12, so that the cross-sectional area of the surrounding portion 50 surrounding the target lumen 2 in the circumferential direction increases; or , the first surrounding member 20 and the second surrounding member 30 can move axially synchronously relative to the main body 10 along a second direction opposite to the first direction (for example, the F2 direction shown in FIGS. 1-2 ), so that the first surrounding member A part of each of the second surrounding part 20 and the second surrounding part 30 can enter the interior of the body 10 from the outside of the body 10 through the distal end 12, so that the cross-sectional area of the surrounding part 50 surrounding the target lumen 2 in the circumferential direction is reduced.

Optionally, the first surround 20 or the second surround 30 can be made of flexible material.

Optionally, the flexible material may include, but is not limited to: fiber, silicone, latex, rubber, pvc, and the like.

In this embodiment, the first surrounding member 22 or the second surrounding member 32 may include a hollow structure or a solid structure.

Preferably, the surface of the first surrounding member 20 or the second surrounding member 30 can be coated with an antibacterial layer or a lubricating coating.

In this embodiment, the cross section of the first surrounding member 20 or the second surrounding member 30 may include but not limited to: circular, elliptical, or rectangular.

Optionally, the locking structure 40 may include a passing structure 42 provided on one of the first surrounding member 20 and the second surrounding member 30 , so as to pass through the other of the first surrounding member 20 and the second surrounding member 30 movably. one. Wherein, the piercing structure 42 can be deformed by an external force, so as to position the first surrounding member 20 or the second surrounding member 30 movably pierced therein.

For example, in the embodiment shown in FIGS. 1-5 , the piercing structure 42 can be arranged on the second surrounding member 30 for movably passing the first surrounding member 20 therein, and the piercing structure 42 can be inserted using a surgical tool. The extrusion deformation is used to lock the first surrounding part 20 passing therethrough, so as to provide the first surrounding part 20 and the second surrounding part 30 to be positioned and combined with each other.

Optionally, the piercing structure 42 may include a press-fit tube 44 (see FIGS. 1-4 ).

In this embodiment, the material of the pressing tube 62 may be an easily deformable metal tube.

Optionally, the piercing structure 42 may also be a piercing ring 46 .

In this embodiment, the piercing ring 46 may have a circular cross section (refer to FIGS. 1-6 ), a non-circular cross section, a rectangular cross section, or a polygonal cross section.

Optionally, the locking structure 40 may include a first locking unit 48 and a second locking unit 50 respectively disposed on the first surrounding member 20 and the second surrounding member 30 .

Optionally, the first locking unit 48 may include a first positioning portion 482, and the second locking unit 50 may include a first penetrating portion 502 and a locking portion 504 that communicate with each other, wherein the inner diameter of the first penetrating portion 502 may be slightly Greater than the outer diameter of the first positioning portion 482 , the inner diameter of the locking portion 504 may be slightly smaller than the outer diameter of the first positioning portion 482 .

Wherein, the first surrounding part 20 or the second surrounding part 30 provided with the first positioning part 482 can be movably threaded in the first passing part 502, and can enter the locking part 504 from the first passing part 502, so that the second A positioning portion 482 abuts against one side or two opposite sides of the locking portion 504 so that the first surrounding member 20 and the second surrounding member 30 form the surrounding portion 50 .

For example, in the embodiment shown in FIGS. 1-5 , the first locking unit 48 including the first positioning portion 482 is arranged on the first surrounding member 20, and the second locking unit including the first penetrating portion 502 and the locking portion 504 50 is disposed on the second surrounding member 30, wherein the first surrounding member 20 can be movably threaded in the first passing portion 502 of the second surrounding member 30, and can enter the locking portion 504 from the first passing portion 502, The first positioning part 482 on the first surrounding part 20 abuts against one side or two opposite sides of the locking part 504 so that the first surrounding part 20 and the second surrounding part 30 are combined to form the surrounding part 50 .

It should be noted that the first locking unit 48 of the first positioning part 482 can also be arranged on the second surrounding member 30, and the second locking unit 50 including the first penetrating part 502 and the locking part 504 can be arranged on the second surrounding part 30. On a surrounding member 20, and not limited to the scheme shown in Figs. 1-5.

Optionally, the first locking unit 48 may include a second positioning portion 484, and the second locking unit 50 includes a second passing portion 506 that can be switched between a positioning state and a non-positioning state (refer to FIGS. 1-9, FIG. 1 -10).

Wherein, when the second piercing part 506 is in the non-positioning state, the first surrounding part 20 or the second surrounding part 30 provided with the second positioning part 484 can pass through it, and when the second piercing part 506 is in the positioning In this state, the second positioning portion 484 can be abutted against one side or two opposite sides of the second penetrating portion 506 so that the first surrounding member 20 and the second surrounding member 30 form a surrounding portion 50 .

Optionally, the second locking unit 50 may also include a passing channel 508 (refer to FIGS. The surrounding member 30 can enter into the second piercing portion 506 or exit from the second piercing portion 506 through the piercing channel 508 .

Specifically, the second piercing portion 506 can be switched between a positioning state and a non-positioning state by virtue of the design of the piercing channel 508 being deformed.

Wherein, the passing channel 468 may be L-shaped, but not limited thereto, and may also be designed as a straight line or an S-shape.

It should be noted that, in addition to adopting the above-mentioned structural design method to provide the second piercing portion 506 to switch between the positioning state and the non-positioning state, material design methods are also used, such as elastically deformable materials to form the second penetrating portion 506. The second piercing portion 506 that switches between the positioning state and the non-positioning state (refer to FIGS. 1-10 ).

In addition, the elastic stop unit 5062 can also be designed inside the second passing portion 506 so that the second passing portion 506 can switch between a positioning state and a non-positioning state (refer to FIGS. 1-11 ).

For example, referring to the embodiment shown in FIGS. 1-9 , the first locking unit 48 including the second positioning portion 484 can be arranged on the second surrounding member 30 , and the first locking unit 48 including the second passing portion 506 and the passing channel 508 The second locking unit 50 can be disposed on the first surrounding member 20 .

In this embodiment, the second surrounding member 30 can enter the second piercing portion 506 through the piercing channel 508, or withdraw from the second piercing portion 506 through the piercing channel 508, and the second piercing portion 506 can be The design of the passing passage 508 switches between the positioning state and the non-positioning state, so that the second surrounding member 30 can be displaced relative to the second passing portion 508 to adjust the cross-sectional area of the surrounding portion 50, or by means of the second The positioning portion 48 abuts against one side or two opposite sides of the second penetrating portion 506 to position the second surrounding member 30 relative to the first surrounding member 20 .

Optionally, the first positioning part 482 or the second positioning part 484 may include at least one positioning protrusion 62 distributed on the first surrounding part 20 or the second surrounding part 30 for the first surrounding part 20 and the second surrounding part 30 The piece 30 constitutes a surrounding portion 50 having different cross-sectional areas (see FIGS. 1-5, 1-7, 1-8).

Wherein, when the first positioning portion 482 or the second positioning portion 484 includes a plurality of positioning protrusions 62, the plurality of positioning protrusions 62 may be distributed on the first surrounding member 20 or the second surrounding member 30 at intervals. superior.

In this embodiment, the positioning protrusion 62 may include but not limited to: a circular cross section (see FIGS. 1-5 ), a rectangular cross section (see FIGS. 1-7 ), or a tapered cross section (see FIGS. 1-8 ).

Optionally, the first positioning part 482 or the second positioning part 484 may also include at least one barb (not shown) distributed on the first surrounding part 20 or the second surrounding part 30 .

Optionally, the first surrounding member 20 or the second surrounding member 30 provided with the second locking unit 50 may also include an operating portion 64 adjacent to the second locking unit 50 (refer to FIGS. 1-5, 1-9 to 1 -11), the second locking unit 50 can be positioned by the operating portion 64 for combining with the first surrounding member 20 or the second surrounding member 30 provided with the first locking unit 48 .

In this embodiment, the second locking unit 50 can be driven to move to a preset position via the operating portion 64 , so that the first surrounding member 20 or the second surrounding member 30 provided with the first locking unit 48 can pass therethrough.

Alternatively, the operating portion 64 may have a segment length of 1 to 2 cm.

In this embodiment, the operating part 64 can be combined with an operating tool (such as surgical forceps, etc., not shown), and an anti-slip unit 642 (refer to FIGS. Positioning on the operation part 64, for example, can provide surgical forceps with a firm grip on the operation part 64 to perform related operations.

Optionally, the locking structure 40 may include a strap structure 510 separately disposed on the first surrounding member 20 and the second surrounding member 30 (refer to FIGS. 1-13 ).

Optionally, the end of the first surrounding member 20 and/or the second surrounding member 30 further includes a piercing structure 66 (refer to FIGS. Clearance to reach the preset tissue position.

Preferably, the piercing structure 66 can be disposed at the end of the first surrounding member 20 or the second surrounding member 30 provided with the first locking unit 48 .

Optionally, the piercing structure 66 may be conical or oblate, and the material of the piercing structure 66 may be slightly harder than that of the first surrounding member 20 or the second surrounding member 30 .

Optionally, the puncture structure 66 can be integrally formed with the first surrounding member 20 and/or the second surrounding member 30 , or the puncturing structure 66 can also be positioned at the end of the first surrounding member 20 and/or the second surrounding member 30 independent components of the department.

Optionally, the lumen adjustment device 1 may further include a curved control portion 74 combined with at least a part of the first surround 20 and/or the second surround 30 (refer to FIGS. The part 20 and/or the second surrounding part 30 can be bent and deformed according to the preset bending direction and the preset bending arc, so as to provide that the first surrounding part 20 and/or the second surrounding part 30 can easily pass through the surrounding tissue gap of the target lumen , to complete the surgical operation of surrounding the target lumen 2 circumferentially.

Optionally, the lumen adjustment instrument 1 may further include an assembly 70 and a driving structure 72 .

Wherein, the combination part 70 can be located in the body 10 and connected to the first surrounding part 20 and the second surrounding part 30 respectively (refer to FIGS. 1-2 and 1-3 ).

The drive structure 72 can be positioned at the proximal end 14 of the body 10 and connected to the assembly 70 (referring to FIGS. 1-2 , 1-3 and 1-15 in conjunction), for controlling the axial movement of the assembly 70 relative to the body 10 , so that the first surrounding member 20 and the second surrounding member 30 move synchronously relative to the axial direction of the main body 10 , so as to adjust the cross-sectional area of the surrounding portion 50 .

Optionally, the lumen adjustment instrument 1 may also include an identification unit 68 (refer to FIGS. 1-15 ) provided on at least one of the body 10 , the first surround 20 , and the second surround 30 for identifying the assembly 70 (that is, the moving distance of the first surrounding member 20 and the second surrounding member 30 ) relative to the main body 10 .

Optionally, the body 10 can also be made of a transparent material for observing the moving distance of the assembly 70 relative to the body 10, so as to achieve the purpose of precisely controlling the cross-sectional area of the surrounding portion.

Optionally, an elastic structure 76 is further provided inside the body 10 .

In this embodiment, the assembly 70 can be moved axially relative to the main body 10 along a first direction (such as the F2 direction shown in FIGS. 1-16 ) by the action of the driving structure 72, so as to elastically deform the elastic structure 76; or The assembly 70 can be moved relative to the main body 10 along a second direction opposite to the first direction (for example, the F1 direction shown in FIGS. 1-15 ) under the action of the elastic restoring force of the elastic structure 76 .

In this embodiment, when the assembly 70 is moved axially relative to the main body 10 along the first direction (such as the F2 direction shown in FIGS. Small, when the assembly 70 moves axially relative to the main body 10 in the second direction (such as the F1 direction shown in FIGS. Larger, so as to make the release operation of the target lumen 2 smoother.

Using the lumen adjustment device of the present application, the experimental results of related simulation experiments and animal experiments are as follows:

In real laparoscopic liver surgery, the doctor passes the catheter through the puncture device, wraps and tightens the hilar blood vessels with surgical forceps, the whole operation process takes about 10 minutes, and the blood vessels cannot be closed and loosened repeatedly after tightening , If you want to loosen the blood vessel for a period of time, you can only cut off the original catheter and wrap it again. In the self-designed simulated human laparoscopic liver surgery experiment, the lumen adjustment device of the present application was used for the experiment. It took 5 minutes to enclose the simulated hepatic hilar blood vessel from the beginning to the completion, and then the driving structure 72 (handle) was operated to quickly close the blood vessel. , the diameter of the simulated hepatic portal vessel was reduced from 3cm to 2.08cm (introduced from the average stroke of 2.9cm)). The flow rate of the fluid (water used in the experiment) flowing through the simulated blood vessel is gradually reduced from 2000ml/min (normal human liver blood flow is 1000-1800ml/min) to 0, and the driving structure 72 is controlled to loosen the wrapped simulated blood vessel, and the diameter of the simulated blood vessel After returning to the original state, the fluid (water) in the blood vessel continues to circulate and flow, which shows that the lumen regulating device of the present application can quickly realize intermittent closing and loosening of the simulated blood vessel in the simulation experiment, and achieve the purpose of controlling the flow rate of the water flow in the simulated blood vessel, and works well.

In the animal experiment center, the lumen tube adjustment device of the present application was used on experimental pigs to perform hepatic portal vessel ligation operation under laparoscope. After the laparoscopic pneumoperitoneum channel was established, it took 4.5 minutes from the lumen adjustment instrument of the present application to enter the puncture device to complete wrapping around the pig's hilar blood vessel, and it was observed that the color of the pig's liver changed from the original bright red , into ischemic black red. Use a scalpel to cut open the pig liver tissue downstream of the hepatic hilar vessels, and only a small amount of blood spots appear, but the blood vessels in the subsequent cut tissue are no longer bleeding, which shows that the lumen regulating device of the present application has a good effect in closing blood vessels.

To sum up, the lumen adjustment device of the present application can form a surrounding part that surrounds the target lumen in the circumferential direction by flexibly connecting the first surrounding part and the second surrounding part of the main body. By controlling the first surrounding part and the second surrounding part The parts move synchronously with respect to the body, which not only can precisely adjust the cross-sectional area of the surrounding part, but also make the target lumen deform to different degrees according to the different cross-sectional areas of the surrounding part, so as to achieve the purpose of precisely controlling the liquid flow rate in the target lumen, and has the advantages of The structure design is simple and small, and the advantages of convenient operation.

Furthermore, by synchronously reciprocating the axial reciprocating movement of the first surrounding part and the second surrounding part relative to the main body, the circumference of the surrounding part surrounding the target lumen in the circumferential direction can be changed such that the first surrounding part and the second surrounding part are opposite to each other. Twice the moving stroke of the main body, therefore, it has the advantages of short operating stroke, high closing efficiency, and small volume of the instrument

In addition, the puncture structure arranged at the end of the first surrounding member and/or the second surrounding member can be used to puncture the tissue space around the hepatic hilum, so as to facilitate the surrounding positioning of the target lumen, thereby facilitating the smooth execution of the operation.

As shown in Figure 2-1 to Figure 2-3, the lumen adjustment device 1-1 of the present application mainly includes a body 1-10, a first surrounding part 1-20, a second surrounding part 1-30, a locking structure 1- 40.

The first surrounding part 1-20 is fixedly connected to the main body 1-10, and the second surrounding part 1-30 is movably connected to the main body 1-10.

Optionally, at least one of the first surrounding part 1-20 and the second surrounding part 1-30 is provided with a locking structure 1-40.

In one embodiment, referring to the embodiment shown in Fig. 2-1 to Fig. 2-5, the locking structure 1-40 is arranged on the first surrounding member 1-20; in another embodiment, referring to Fig. 2-6 In the illustrated embodiment, the locking structure 1-40 is separately provided on the first surrounding part 1-20 and the second surrounding part 1-30; in other embodiments, the locking structure 1-40 can also be provided only on the second surrounding part 1- 30 (not shown).

The locking structure 1-40 can be used for positioning and combining the first surrounding part 1-20 and the second surrounding part 1-30 to form a surrounding part 1-50 surrounding the target lumen 1-2 in the circumferential direction (refer to FIGS. The embodiment shown in Figure 2-7).

Optionally, the target lumen 1-2 can be a lumen with an internal lumen that can be deformed, including but not limited to various biological tissue lumens such as blood vessels, bile ducts, lymphatic vessels, trachea, ureter, and digestive system lumens .

In this embodiment, the second surrounding member 1-30 can move back and forth relative to the main body 1-10 to adjust the cross-sectional area of the surrounding part 1-50, and make the cross-section of the target lumen 1-2 according to the surrounding part 1 The different cross-sectional areas of -50 produce different degrees of deformation, so as to adjust the liquid flow rate in the target lumen 1-2.

Specifically, when the cross-sectional area of the surrounding portion 1-50 surrounding the target lumen 1-2 in the circumferential direction is larger, the target lumen 2 is subjected to the smaller force of the surrounding portion 1-50, and the target lumen 2 is deformed. The smaller the degree, the faster the fluid flow rate in the target lumen 2; on the contrary, when the cross-sectional area of the surrounding part 1-50 surrounding the target lumen 1-2 is smaller, the surrounding part 1 received by the target lumen 2 The greater the force of -50, the greater the degree of deformation of the target lumen 2, and the slower the fluid flow rate in the target lumen 2.

In this embodiment, the body 1-10 is a hollow structure and has a distal end 1-12 (for example, a distal end opening) for the movable surrounding segment 1-32 to extend from the inside of the body 1-10 to the outside of the body 1-10 .

2-2, the first surrounding part 1-20 can be fixedly connected to the distal end 1-12 of the body 1-10, and includes a fixed surrounding section 1-22 exposed to the main body 1-10, and the second surrounding part 1-30 It may include a movable surrounding segment 1-32 and a movement regulating segment 1-34 connected to the movable surrounding segment 1-32 and movably passed through the body 1-10.

In this embodiment, at least one of the fixed surrounding segment 1-22 and the movable surrounding segment 1-32 is provided with a locking structure 1-40, which is used to provide a combination of the fixed surrounding segment 1-22 and the movable surrounding segment 1-32, To form the surrounding portion 1-50 exposed from the main body 1-10.

In the embodiment shown in Figure 2-2, the locking structure 1-40 can be arranged on the fixed surrounding section 1-22, for combining the movable surrounding section 1-32 on it, so that the fixed surrounding section 1-22 and the movable surrounding The segments 1-32 are combined with each other to form a surrounding portion 1-50 that circumferentially surrounds the target lumen 1-2 (refer to the state shown in FIGS. 2-3 ).

Specifically, the movement adjustment section 1-34 can move axially relative to the main body 1-10 along a first direction (such as the F1 direction shown in FIG. 2-2 ), so that the movable surrounding section 1-32 inside the main body 1-10 A part of the body 1-10 is exposed to the body 1-10 through the distal end 1-12 of the body 1-10, so that the cross-sectional area of the surrounding portion 1-50 circumferentially surrounding the target lumen 1-2 increases.

Alternatively, the movement adjustment section 1-34 can also move axially relative to the body 1-10 along a second direction opposite to the first direction (for example, the F2 direction shown in FIG. A part of the movable surrounding section 1-32 enters the interior of the body 1-10 through the distal end 1-12, so that the cross-sectional area of the surrounding portion 1-50 surrounding the target lumen 1-2 in the circumferential direction decreases.

In this embodiment, the fixed surrounding segment 1-22 or the movable surrounding segment 1-32 can be made of flexible materials. Optionally, flexible materials may include, but are not limited to: silicone, latex, resin, polyester, polyurethane, and the like.

In this embodiment, the fixed surrounding segment 1-22 or the movable surrounding segment 1-32 may include a hollow structure or a solid structure.

Preferably, the surface of the fixed surrounding segment 1-22 or the movable surrounding segment 1-32 can be coated with an antibacterial layer or a lubricating coating.

In this embodiment, the cross section of the fixed surrounding segment 1-22 or the movable surrounding segment 1-32 may include but not limited to: circular, elliptical, or rectangular.

Optionally, the locking structure 1-40 may include a threading structure 1-42, which may be arranged on one of the fixed surrounding segment 1-22 and the movable surrounding segment 1-32, so as to allow the fixed surrounding segment 1-32 to be movably worn. 22 and the other of the movable surrounding segment 1-32, and wherein the piercing structure 1-42 can be deformed by an external force to position the fixed surrounding segment 1-22 or the movable surrounding segment 1-32 which is movable therein .

For example, in the embodiment shown in Figures 2-4 and 2-5, the locking structure 1-40 is a passing structure 1-42 arranged on the fixed surrounding section 32, which can be used to pass through the movable surrounding section 1-32. Wherein, the piercing structure 1-42 can be irreversibly deformed by an external force, so as to fix the movable surrounding section 1-32 pierced therein.

Optionally, the piercing structure 1-42 may include a press-fit tube structure 1-422 (refer to the embodiment shown in FIGS. 2-4 ).

Optionally, the piercing structure 1-42 may also include a ring structure 1-424 (refer to the embodiment shown in FIGS. 2-5 ).

In this embodiment, the annular structure 1-424 may include, but not limited to: one of a circular cross section, a non-circular cross section, a rectangular cross section, and a polygonal cross section.

Optionally, the piercing structure 1-42 can be designed as a piercing hole 1-426 with a self-locking function (refer to FIG. 2-12 ).

Optionally, the locking structure 1-40 may include a first locking unit 1-44 and a second locking unit 1-46. Wherein, the first locking unit 1-44 is arranged on one of the fixed surrounding section 1-22 and the movable surrounding section 1-32, and the second locking unit 1-46 is arranged on the fixed surrounding section 1-22 and the movable surrounding section 1-32. Another one of 32 on.

In one embodiment, the first locking unit 1-44 may include a first positioning portion 1-442, and the second locking unit 1-46 may include a first passing portion 1-462 and a locking portion 1-464 that communicate with each other, Wherein, the inner diameter of the first piercing portion 1-462 can be slightly larger than the outer diameter of the first positioning portion 1-442, and the inner diameter of the locking portion 1-464 is slightly smaller than the outer diameter of the first positioning portion 1-442.

Among them, the fixed surrounding section 1-22 or the movable surrounding section 1-32 provided with the first positioning part 1-442 can be movably installed in the first passing part 1-462, and can be connected by the first passing part 1-462. 462 enters the locking part 1-464, so that the first positioning part 1-442 abuts against one side or the opposite side of the locking part 1-464, so that the fixed surrounding segment 1-22 and the movable surrounding segment 1-32 form a surrounding Sections 1-50.

For example, referring to the embodiment shown in Figures 2-6, the first locking unit 1-44 including the first positioning portion 1-442 can be arranged on the fixed surrounding segment 1-22, and includes the first passing portion 1-44 that communicates with each other. 462 and the second locking unit 1-46 of the locking part 1-464 can be arranged on the movable surrounding section 1-32, wherein the fixed surrounding section 1-22 can be movably worn on the first thread of the movable surrounding section 1-32 part 1-462, and can enter the locking part 1-464 through the first passing part 1-462, so that the first positioning part 1-442 on the fixed surrounding section 1-22 abuts against one of the locking part 1-464. side or opposite sides, for the fixed surrounding segment 1-22 and the movable surrounding segment 1-32 to combine with each other and form the surrounding part 1-50.

It should be noted that the first locking unit 1-44 including the first positioning part 1-442 can also be arranged on the movable surrounding section 1-32, and will include the first penetrating part 1-462 and the locking part that communicate with each other The second locking unit 1-46 of 1-464 is disposed on the fixed surrounding section 1-22, and is not limited to the solutions shown in Figs. 2-6.

In this embodiment, the first positioning part 1-442 may include at least one positioning protrusion 1-442a distributed on the fixed surrounding section 1-22 or the movable surrounding section 1-32, so that the fixed surrounding section 1-22 and the movable surrounding section 1-22 The surrounding segments 1-32 form surrounding portions 1-50 with different cross-sectional areas for circumferentially surrounding target lumens 1-2 with different diameters.

Optionally, the positioning protrusion 1-442a may include, but not limited to: a rectangular section (refer to Figure 2-9), a conical section (refer to Figure 2-10), but is not limited thereto, and may also be designed as a circle conical surface, drop-shaped interface, etc.

Optionally, the first positioning portion 1-442 may also include at least one barb (not shown) distributed on the fixed surrounding segment 1-22 or the movable surrounding segment 1-32.

Optionally, the first locking unit 1-44 may include a second positioning portion 1-444, and the second locking unit 1-46 may include a second passing portion 1-466 that is switchable between a positioning state and a non-positioning state.

Wherein, when the second piercing portion 1-466 is in the non-positioning state, the fixed surrounding section 1-22 or the movable surrounding section 1-32 provided with the second positioning portion 1-444 can be movably threaded therein; When the second piercing portion 1-466 is in the positioning state, the second positioning portion 1-444 can be abutted against one side or the opposite side of the second piercing portion 1-466 for fixing the surrounding section 1-22 and moving The surrounding segment 1-32 constitutes the surrounding portion 1-50.

Optionally, the second locking unit 1-46 may also include a passing channel 1-468 communicating with the second passing portion 1-466, so as to provide for the fixed surrounding segment 1-22 or the second positioning portion 1-444. The movable surrounding segment 1-32 can enter into the second piercing portion 1-466 or exit from the second piercing portion 1-466 through the piercing channel 1-468.

In this embodiment, the second passing portion 1-466 can be switched between a positioning state and a non-positioning state by virtue of the design of the passing channel 1-468 being deformed. In addition to the above-mentioned structural design method to provide the second piercing part 1-466 can be switched between the positioning state and the non-positioning state, the second piercing part 1 is also composed of a material design method, such as elastically deformable material. -466, so that the second piercing part 1-466 can be switched between the positioning state and the non-positioning state.

For example, referring to the embodiment shown in Figures 2-7, the first locking unit 1-44 including the second positioning portion 1-444 can be arranged on the fixed surrounding section 1-22, including the second penetrating portion 1-466 And the second locking unit 1-46 passing through the channel 1-468 can be arranged on the movable surrounding segment.

Wherein, the passageway 1-468 may be L-shaped, but not limited thereto, and may also be designed as a straight line or an S-shape.

In this embodiment, the first surrounding member 22 can enter the second piercing portion 1-466 through the piercing channel 1-468, or exit from the second piercing portion 1-466 through the piercing channel 1-468, And the second piercing portion 1-466 can be switched between the positioning state and the non-positioning state by the design of the piercing channel 1-468, so that the first surrounding member 22 can be displaced relative to the second piercing portion 1-466 , to adjust the cross-sectional area of the surrounding part 1-50, or by means of the second positioning part 1-444 abutting against one side or the opposite side of the second penetrating part 1-466, so that the fixed surrounding part 1-22 is relatively Locate in the active surrounding segment 1-32.

In this embodiment, the second positioning part 1-444 may also include at least one positioning protrusion 1-442a distributed on the fixed surrounding section 1-22 or the movable surrounding section 1-32, so that the fixed surrounding section 1-22 and the movable surrounding section 1-32 The movable surrounding segment 1-32 constitutes a surrounding part 1-50 with different cross-sectional areas for circumferentially surrounding target lumens 1-2 with different diameters.

Optionally, the positioning protrusion 1-442a may include, but not limited to: a rectangular section (refer to Figure 2-9), a conical section (refer to Figure 2-10), but is not limited thereto, and may also be designed as a circle conical surface, drop-shaped interface, etc.

Optionally, the second positioning portion 1-444 may also include at least one barb (not shown) distributed on the fixed surrounding segment 1-22 or the movable surrounding segment 1-32.

Optionally, the fixed surrounding segment 1-22 or the movable surrounding segment 1-32 provided with the first locking unit 1-44 may also include an operating part 1-24 adjacent to the first locking unit 1-44, which can be 1-24 drives the first locking unit 1-44 to move to a preset position and position it for combining with the fixed surrounding segment 1-22 or the movable surrounding segment 1-32 provided with the second locking unit 1-46.

Alternatively, the operating part 1-24 may have a segment length of 1 to 2 cm.

In this embodiment, the operating part 1-24 can be combined with an operating tool (such as surgical forceps, etc., not shown), and an anti-slip unit 1-242 can also be provided on the operating part 1-24 (refer to FIG. 2-11 ), To provide positioning of the operation tool relative to the operation part 1-24, for example, surgical forceps can be provided to hold the operation part 1-24 stably to perform related operations.

Optionally, the locking structure 1-40 may include a cable tie structure 1-48 separately provided on the fixed surrounding section 1-22 and the movable surrounding section 1-32 (refer to the embodiment shown in FIGS. 2-8 ).

Optionally, the end of the first surrounding part 1-20 and/or the second surrounding part 1-30 may also include a piercing structure 1-36 for providing the first surrounding part 1-20 or the second surrounding part 1-30 30 through the target tissue gap to reach the preset tissue position.

Preferably, the first surrounding part 1-20 or the second surrounding part 1-30 provided with the first locking unit 1-44 including the first positioning part 1-442 or the second positioning part 1-444 can A piercing structure 1-36 is provided at the end (refer to the embodiment shown in Fig. 2-6 and Fig. 2-7).

Optionally, the piercing structure 1-36 may be conical or oblate.

Optionally, the puncture structure 1-36 can be integrally formed with the first surrounding member 1-20 and/or the second surrounding member 1-30, or the puncturing structure 1-36 can also be positioned on the first surrounding member 1-20 and/or a separate assembly of the ends of the second surround 1-30.

Optionally, the lumen adjustment instrument 1-1 may further include an identification unit 1-60 (refer to FIG. The moving distance of the surround 1-30 relative to the body 1-10.

Optionally, the body 1-10 may also be made of a transparent material for observing the moving distance of the second surrounding member 1-30 relative to the body 1-10.

Please refer to Fig. 2-13, the lumen adjustment instrument 1-1 may also include a driving structure 1-70, which is located at the proximal end 1-14 of the body 1-10 and connected to the second surrounding member 1-30, for controlling the second The surround 1-30 moves relative to the body 1-10.

In summary, the lumen adjustment instrument 1-1 forms a circumferentially surrounding target lumen by means of the first surrounding part 1-20 fixedly connected to the body 1-10 and the second surrounding part 1-30 flexibly connected to the body 1-10. The surrounding part of the surrounding part, and by controlling the movement of the second surrounding part 1-30 relative to the main body 1-10, to adjust the cross-sectional area of the surrounding part, so that the target lumen can be deformed to different degrees according to the different cross-sectional areas of the surrounding part, so as to achieve The purpose of precisely controlling the flow rate of the liquid in the target lumen has the advantages of simple and compact structure design and convenient operation.

In addition, through the locking structure with self-locking function provided on the first surrounding part and/or the second surrounding part, the joint positioning between the first surrounding part and the second surrounding part can be easily realized, so as to reduce the difficulty of operation and reduce the Operating manpower is conducive to the smooth execution of the operation.

Furthermore, the puncture part arranged at the end of the first surrounding member and/or the second surrounding member can be used to puncture the tissue space around the hilum of the liver, so as to facilitate the surrounding positioning of the target lumen, thereby facilitating the smooth execution of the operation .

In summary, the lumen adjustment device of the present application can drive the surrounding structure to move relative to the main body through the driving structure, so as to adjust the cross-sectional area of the surrounding part formed by the surrounding structure, so that the cross-section of the target lumen can be adjusted according to the surrounding structure. The different cross-sectional areas of the cavity will produce different degrees of deformation, so as to achieve the purpose of precisely regulating the flow rate of the liquid in the target lumen.

Furthermore, through the locking structure separately provided on the first surrounding part and the second surrounding part, the first surrounding part and the second surrounding part can be easily combined or disassembled with each other, and have better combination stability, so as to facilitate the operation successful execution.

In addition, by setting a plurality of limiting parts on the driving body, and applying different axial forces to the driving part, the driving part can be positioned at different positions of the driving body, so as to further precisely control the cross-sectional area of the surrounding part. purpose, and has the advantage of easy operation.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, and are not intended to limit them; although the application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and spirit of the technical solutions of the various embodiments of the present application. scope.

Claims (20)

A lumen adjustment device, characterized in that the lumen adjustment device comprises: Ontology; a first surround and a second surround respectively connected to the body; locking structure; where, At least one of the first surrounding part and the second surrounding part is provided with the locking structure, which allows the first surrounding part and the second surrounding part to be combined with each other to form a circumferentially surrounding target lumen the surrounding part; At least one of the first surrounding part and the second surrounding part can reciprocate relative to the body, so as to adjust the cross-sectional area of the surrounding part, and make the cross-section of the target lumen according to the selected The different cross-sectional areas of the surrounding parts produce different degrees of deformation. The lumen adjusting instrument according to claim 1, wherein the first surrounding member and the second surrounding member are respectively movably connected to the body, and the first surrounding member and the second surrounding member are both It can move back and forth synchronously with respect to the body. The cavity adjustment instrument according to claim 2, wherein the body is a hollow structure and has a distal end; The first surround and the second surround are axially synchronously movable relative to the body in a first direction such that a portion of each of the first surround and the second surround is released from the body internally moved to the exterior of the body via the distal end such that the cross-sectional area of the surrounding portion circumferentially surrounding the target lumen increases; or, The first surround and the second surround are axially synchronously movable relative to the body in a second direction opposite to the first direction so that the first surround and the second surround A portion of each part enters the interior of the body from the exterior of the body via the distal end, so that the cross-sectional area of the surrounding portion circumferentially surrounding the target lumen decreases. The lumen adjustment instrument according to claim 2, wherein the locking structure comprises a penetrating structure; wherein, One of the first surrounding member and the second surrounding member is provided with the passing structure for movably passing through the other of the first surrounding member and the second surrounding member; And wherein, the piercing structure can be deformed by an external force, so as to position the first surrounding element or the second surrounding element movably threaded therein. The lumen adjustment instrument according to claim 2, wherein the locking structure comprises a first locking unit and a second locking unit respectively disposed on the first surrounding member and the second surrounding member. The lumen adjustment instrument according to claim 5, wherein the first locking unit includes a first positioning portion, and the second locking unit includes a first penetrating portion and a locking portion that communicate with each other; wherein, The first surrounding part or the second surrounding part provided with the first positioning part can be movably passed through the first passing part, and can enter the locking position through the first passing part. part, so that the first positioning part abuts against one side or two opposite sides of the locking part, so that the first surrounding part and the second surrounding part form the surrounding part. The lumen adjusting instrument according to claim 5, wherein the first locking unit includes a second positioning portion, and the second locking unit includes a second threading member switchable between a positioning state and a non-positioning state. Department; among them, When the second passing part is in the non-positioning state, the first surrounding part or the second surrounding part provided with the second positioning part can pass through it; When the second piercing portion is in the positioning state, the second positioning portion can be made to abut against one side or two opposite sides of the second piercing portion for the first surrounding member and said second surrounding member constitutes said surrounding portion; The second locking unit further includes a passing passage communicating with the second passing portion, so that the first surrounding member or the second surrounding member provided with the second positioning portion enters through the passing passage The second piercing portion or exits from the second piercing portion. The lumen adjusting device according to claim 6 or 7, characterized in that, The first positioning part or the second positioning part includes at least one positioning protrusion distributed on the first surrounding part or the second surrounding part for the first surrounding part and the second surrounding part to surrounds constituting said surrounds with different cross-sectional areas; The positioning protrusion may include a circular section, a rectangular section or a tapered section. The lumen adjustment instrument according to any one of claims 6 to 8, characterized in that, the first surrounding part or the second surrounding part provided with the second locking unit further includes a The operating part of the second locking unit can position the second locking unit through the operating part, so as to be combined with the first surrounding part or the second surrounding part provided with the first locking unit. The lumen adjustment device according to claim 2, wherein the device further comprises an identification unit provided on at least one of the body, the first surrounding member, and the second surrounding member, for Identify the moving distances of the first surrounding part and the second surrounding part relative to the body. The lumen adjusting instrument according to claim 2, wherein the instrument further comprises an assembly located in the body and connected to the first surrounding member and the second surrounding member respectively; and wherein the The instrument also includes a driving structure, which is located at the proximal end of the body and connected to the assembly, for controlling the axial movement of the assembly relative to the body, so that the first surrounding member and the The second surrounding member moves synchronously relative to the body. The cavity adjustment instrument according to claim 1, wherein the first surrounding member is fixedly connected to the body, the second surrounding member is movably connected to the body, and the second surrounding member can be moved relative to the The body reciprocates. The cavity adjustment instrument according to claim 12, characterized in that, The first surrounding member includes a fixed surrounding section exposed to the body; The second surrounding member includes a movable surrounding section and a movement regulating section connected to the movable surrounding section and movably inserted in the body, the movement regulating section can move axially relative to the body along a first direction, so that a part of the movable surrounding section inside the body is exposed to the body through the distal end, so that the cross-sectional area of the surrounding portion surrounding the target lumen in the circumferential direction increases; or, the movement adjustment A segment is axially movable relative to the body in a second direction opposite to the first direction such that a portion of the movable surrounding segment exposed from the body enters the interior of the body via the distal end such that a reduced cross-sectional area of the surrounding portion circumferentially surrounding the target lumen; At least one of the fixed surround segment and the movable surround segment is provided with the locking structure, which is used to provide the combination of the fixed surround segment and the movable surround segment to form the surround exposed to the body. department. The lumen adjustment instrument according to claim 13, wherein the locking structure comprises a penetrating structure; wherein, One of the fixed surrounding segment and the movable surrounding segment is provided with the passing structure for moving through the other of the fixed surrounding segment and the movable surrounding segment; And wherein, the penetrating structure can be deformed by an external force, so as to position the fixed surrounding section or the movable surrounding section pierced therein. The lumen adjustment instrument according to claim 14, wherein the locking structure comprises: a first locking unit, which is arranged on one of the fixed surrounding segment and the movable surrounding segment; The second locking unit is arranged on the other of the fixed surrounding segment and the movable surrounding segment. The lumen adjustment instrument according to claim 15, wherein the first locking unit includes a first positioning portion, and the second locking unit includes a first penetrating portion and a locking portion that communicate with each other; wherein, The fixed surrounding segment or the movable surrounding segment provided with the first positioning part can be movably inserted in the first passing part and can enter the locking part through the first passing part, so that The first positioning portion abuts against one side or two opposite sides of the locking portion, so that the fixed surrounding segment and the movable surrounding segment constitute the surrounding portion. The lumen adjustment instrument according to claim 15, wherein the first locking unit includes a second positioning portion, and the second locking unit includes a second threading member that can switch between a positioning state and a non-positioning state. Department; among them, When the second passing portion is in the non-positioning state, the fixed surrounding segment or the movable surrounding segment provided with the second positioning portion can be movably inserted therein; When the second piercing portion is in the positioning state, the second positioning portion can be made to abut against one side or two opposite sides of the second piercing portion, so that the fixed surrounding section and the The movable surrounding segment constitutes the surrounding part; The second locking unit also includes a passing channel communicating with the second passing part, so that the fixed surrounding segment or the movable surrounding segment provided with the second positioning part enters the The second piercing portion or exits from the second piercing portion. The lumen adjustment instrument according to claim 16 or 17, wherein the first positioning part or the second positioning part comprises at least one positioning positioning part distributed on the fixed surrounding segment or the movable surrounding segment. The convex part is used for the fixed surrounding segment and the movable surrounding segment to form the surrounding part with different cross-sectional areas; wherein, the positioning convex part may include a rectangular cross-section, a tapered cross-section, or a circular cross-section. The lumen adjustment device according to claim 12, characterized in that the device further comprises a marking unit arranged on the body and/or the second surrounding member for marking the relative position of the second surrounding member The moving distance of the body. The lumen adjusting instrument according to claim 12, characterized in that, the instrument further comprises a driving structure, which is located at the proximal end of the body and connected to the second surrounding member, for controlling the second surrounding member Move relative to the body.

Images