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CN119367098A - A diameter regulator and a diameter adjustable bracket system - Google Patents

A diameter regulator and a diameter adjustable bracket system Download PDF

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Publication number
CN119367098A
CN119367098A CN202411024603.5A CN202411024603A CN119367098A CN 119367098 A CN119367098 A CN 119367098A CN 202411024603 A CN202411024603 A CN 202411024603A CN 119367098 A CN119367098 A CN 119367098A
Authority
CN
China
Prior art keywords
adjusting
adjusting wire
diameter
damping
support
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202411024603.5A
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Chinese (zh)
Other versions
CN119367098B (en
Inventor
付志刚
熊凯
杨迟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Accu Target Medipharma Shanghai Co ltd
Yichang Central People's Hospital First Clinical College Of Three Gorges University And People's Hospital Of Affiliated Center Of Three Gorges University
Original Assignee
Accu Target Medipharma Shanghai Co ltd
Yichang Central People's Hospital First Clinical College Of Three Gorges University And People's Hospital Of Affiliated Center Of Three Gorges University
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Priority to CN202411024603.5A priority Critical patent/CN119367098B/en
Publication of CN119367098A publication Critical patent/CN119367098A/en
Application granted granted Critical
Publication of CN119367098B publication Critical patent/CN119367098B/en
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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
    • A61F2/06—Blood vessels
    • A61F2/07—Stent-grafts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Gastroenterology & Hepatology (AREA)
  • Pulmonology (AREA)
  • Prostheses (AREA)

Abstract

The invention discloses an drift diameter adjuster and an drift diameter adjustable bracket system, the drift diameter adjuster is suitable for the drift diameter adjustable bracket and comprises a main body, a plurality of adjusting wires, damping fixing pieces and a fixing seat. The damping fixing piece is connected to a supporting framework in the drift diameter adjustable support, the distal end of the adjusting wire is connected to the supporting framework, and the proximal end of the adjusting wire extends into an adjusting wire channel in the main body after passing through the damping fixing piece and is connected with an adjusting wire connector after extending out. The adjusting wire is provided with a disconnecting node on the part in the adjusting wire channel, the adjusting wire connector is arranged on the fixing seat, and the adjusting wire connector rotates under the action of external force so that the adjusting wire is disconnected at the disconnecting node due to the rotation torsion. When the fixing seat is driven to drive the adjusting wire joint to move towards the proximal end under the action of external force, the adjusting wire is driven to overcome the damping between the adjusting wire joint and the damping fixing piece and move towards the proximal end, and the distal end of the adjusting wire drives the supporting framework connected with the adjusting wire to move towards the damping fixing piece, so that the minimum drift diameter of the drift diameter adjustable bracket is reduced.

Description

Latus rectum regulator and latus rectum adjustable support system
Technical Field
The invention belongs to the technical field of medical instruments, and particularly relates to an drift diameter adjuster and an drift diameter adjustable bracket system.
Background
Portal hypertension (portal hypertension) is a group of syndromes caused by persistent increases in portal pressure. Most patients are caused by cirrhosis, a few secondary to portal trunk or hepatic vein obstruction and some factors of unknown origin. The liver is the largest organ in the body, weighing about 1.4kg, responsible for over 500 functions. Most of the blood exiting the stomach and small intestine must pass through the liver. Whereas cirrhosis occurs when normal liver tissue is damaged and replaced by scar tissue. Most of the blood flowing through the liver comes from the portal vein, and in liver cirrhosis, scar tissue significantly slows the flow of blood from the portal vein through the liver. Portal blood pressure increases when portal blood does not flow smoothly back through the liver into the inferior vena cava. Due to the reduced blood flow through the liver, blood must now find a different way to reach the heart. The body transfers blood away from the liver by increasing blood flow through the vessels surrounding the stomach and lower esophageal segment. This increase in blood flow causes the blood vessels to become dilated, twisted and fragile veins, known as varicose veins. Varicose veins may rupture, resulting in bleeding that requires immediate medical attention.
At present, when a patient suffering from gastric fundus hemorrhage caused by portal hypertension is clinically treated, a passage is usually established between a portal vein and a hepatic vein through a jugular intrahepatic puncture operation, a tectorial membrane bracket is implanted in liver parenchyma, and a new blood flow channel is established to reduce the portal hypertension. The internal portal vein stent shunt (TIPS) through jugular vein has the characteristics of small wound, less complications, safety and the like, is an effective method for treating PHT, especially for patients with upper gastrointestinal bleeding caused by esophageal and gastric fundus varices rupture, and has positive clinical curative effects.
The best special stent in the market at present is Viatorr stent of Goer company, the diameter of the new generation of stent can be controlled to be 8 and 10mm (the diameter can be controlled to be 8 and 10mm respectively through balloon expansion with different diameters), but the new generation of stent still cannot be suitable for all people, hepatic encephalopathy is easily caused by overlarge shunt quantity, and rebleeding is easily caused by overlarge shunt quantity (the rebleeding judgment standard is portal vein pressure gradient, namely pressure difference at two ends of the stent), but the rebleeding incidence rate is reduced when the portal vein pressure gradient is less than or equal to 12 mmHg.
The prior support and auxiliary support can only enlarge the effective diameter of the support in use, but can not reduce the effective diameter, and no effective solution exists when the effective diameter is determined to be required to be reduced due to the difference of internal environments of different patients. At present, a new bracket can be expanded to the required effective diameter according to the current requirement on the diameter only by repositioning the new bracket.
Disclosure of Invention
In view of the above, the present invention provides an adjustable diameter adjuster and an adjustable diameter bracket system.
The technical scheme of the invention is as follows:
The utility model provides an latus rectum regulator, is applicable to the adjustable support of latus rectum, the adjustable support of latus rectum includes braced frame and covers the tectorial membrane of locating on the braced frame, the latus rectum regulator includes main part, a plurality of regulating wires, damping mounting and fixing base;
The damping fixing piece is connected to the supporting framework, the main body is provided with a plurality of adjusting wire channels, the adjusting wire channels are in one-to-one correspondence with the adjusting wires, the distal ends of the adjusting wires are connected to the supporting framework, and the proximal ends of the adjusting wires extend into the corresponding adjusting wire channels after passing through the damping fixing piece and are connected with adjusting wire connectors after extending out;
The adjusting wire connector is arranged on the fixed seat, and can rotate relative to the fixed seat under the action of external force to drive the adjusting wire to twist, so that the adjusting wire is disconnected at the disconnection node due to rotation torsion;
When the fixing seat moves towards the proximal direction relative to the main body under the action of external force, all the adjusting wire joints respectively drive all the adjusting wires to overcome the corresponding damping to move towards the proximal direction, and the distal ends of the adjusting wires drive the supporting framework connected with the adjusting wires to move towards the damping fixing piece;
And when the distance between the joint of the support framework and the damping fixing piece and the joint of the support framework and the distal end of the adjusting wire is reduced, the minimum drift diameter of the drift diameter adjustable bracket is reduced.
In the drift diameter adjuster provided by a certain preferred embodiment, the main body comprises a base and a plurality of adjusting sleeves, the adjusting sleeves are in one-to-one correspondence with the adjusting wires, the proximal ends of the adjusting sleeves are connected to the base, the base is provided with a plurality of first through holes, the first through holes are in one-to-one correspondence with the adjusting sleeves, and the first through holes are communicated with internal channels corresponding to the adjusting sleeves to form the adjusting wire channels.
In a preferred embodiment, the diameter adjuster is provided wherein the distal end of the adjustment sleeve abuts the proximal end of the damping mount.
In the drift diameter adjuster provided in a certain preferred embodiment, an adjusting member is disposed between the main body and the fixing seat, and the adjusting member is used for driving the fixing seat to move in a proximal direction relative to the main body under the action of external force, so that the adjusting wire connector mounted on the fixing seat drives the adjusting wire to overcome the damping and move in the proximal direction.
In the diameter adjuster provided in a certain preferred embodiment, the adjusting piece is sleeved on the main body and is in threaded connection with the main body, and the adjusting piece can move in a proximal direction relative to the main body through the threaded connection;
The adjustment member is coupled to the anchor block and is configured to drive the anchor block to move in a proximal direction relative to the body when the adjustment member moves in a proximal direction relative to the body.
In the diameter adjuster provided in a preferred embodiment, the adjusting member is connected to the fixing base in such a manner that a proximal end of the adjusting member abuts against a distal end of the fixing base.
In the drift diameter adjuster provided by a certain preferred embodiment, the proximal end face of the fixing seat is provided with a plurality of mounting grooves which are respectively used for accommodating the adjusting wire connectors, the fixing seat is provided with a second through hole corresponding to the mounting grooves, the proximal end of the second through hole is communicated with the mounting grooves from the bottom surface of the mounting grooves, and the proximal end of the adjusting wire passes through the second through hole to enter the mounting grooves after extending out of the adjusting wire channel and is connected with the adjusting wire connectors from the distal end of the adjusting wire connectors;
The self-rotation-preventing device comprises an installation groove, wherein a connecting part is arranged on the end face of the proximal end of the adjusting wire connector, the connecting part is used for being connected with an external tool, and the adjusting wire connector overcomes the friction force to rotate in the installation groove under the action of torque applied by the external tool.
In the drift diameter adjuster provided in a certain preferred embodiment, the damping fixing member is provided with through holes through which the adjusting wires pass, each adjusting wire passes through one through hole, and friction resistance between the adjusting wire and the side wall of the through hole forms the damping.
An adjustable diameter stent system comprising an adjustable diameter stent and an adjustable diameter stent as defined in any one of the above;
The adjustable-diameter support comprises a support framework and a covering film which is covered on the support framework, the support framework is provided with an adjusting section along the axis direction of the support framework, the adjusting section comprises a plurality of support rings and a plurality of support pieces, the support rings are arranged at intervals side by side along the axis direction of the support framework, the support pieces extend along the axis direction of the support framework and are sequentially connected with the support rings, and the support pieces are distributed along the circumferential direction of the support framework;
The damping fixing piece is connected with the proximal end of the supporting piece or/and the supporting ring at the most proximal end, and the distal end of the adjusting wire is connected with the distal end of the supporting piece or/and the supporting ring at the most distal end;
When the distance between the connection part of the support framework and the damping fixing piece and the connection part of the support framework and the distal end of the adjusting wire is reduced, the support piece is deformed inwards to reduce the minimum diameter of the diameter-adjustable support in the corresponding area of the adjusting section.
By adopting the technical scheme, the invention has the following advantages and positive effects compared with the prior art:
According to the drift diameter adjuster and the drift diameter adjustable bracket system, the distal end of the adjusting wire and the supporting framework are driven to move to pull the adjusting wire to move in the proximal direction, so that the joint of the supporting framework and the distal end of the adjusting wire is close to the joint of the supporting framework and the damping fixing piece, and the minimum drift diameter of the drift diameter adjustable bracket is reduced. After the adjustment is finished, the adjusting wire is twisted through rotating the adjusting wire connector, so that the adjusting wire is broken at the breaking joint, after the adjusting wire is broken, the part which is relatively positioned at the far end is left on the adjustable-diameter bracket, meanwhile, the adjustable-diameter bracket can be kept under the current state due to the existence of damping between the adjustable-diameter bracket and the damping fixing piece, and the part which is relatively positioned at the near end is separated from the adjustable-diameter bracket, and the part is withdrawn together with other structures (not including the damping fixing piece) of the adjustable-diameter bracket.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention.
FIG. 1 is a schematic view of a diameter-adjustable stent according to embodiment 2;
Fig. 2 and 3 are schematic diagrams of the principle of reducing the diameter of a diameter-adjustable stent in embodiment 2;
FIG. 4 is a schematic view showing the structure of a diameter-adjustable bracket in embodiment 3;
FIG. 5 is a schematic view of the principle of reducing the diameter of an adjustable diameter stent according to embodiment 3;
FIG. 6 is a schematic view showing the structure of an adjustable diameter bracket system according to embodiment 1;
fig. 7 is a schematic diagram of a structure of a break-off node on a tuning wire.
Reference numerals illustrate:
The device comprises a support piece, a support ring, a film coating, an adjusting wire, a damping fixing unit, a turning point, a base, an adjusting sleeve, a breaking node, an adjusting piece, an adjusting wire connector, a fixing seat, a fixing point and a diameter D1, wherein the supporting piece, the supporting ring, the film coating, the adjusting wire, the damping fixing unit, the turning point, the base, the adjusting sleeve, the breaking node, the adjusting piece, the adjusting wire connector, the fixing seat, the fixing point and the diameter D1 are respectively arranged.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will explain the specific embodiments of the present invention with reference to the accompanying drawings. It is evident that the drawings in the following description are only examples of the invention, from which other drawings and other embodiments can be obtained by a person skilled in the art without inventive effort.
For the sake of simplicity of the drawing, the parts relevant to the present invention are shown only schematically in the figures, which do not represent the actual structure thereof as a product. Additionally, in order to simplify the drawing for ease of understanding, components having the same structure or function in some of the drawings are shown schematically with only one of them, or only one of them is labeled. Herein, "a" means not only "only this one" but also "more than one" case.
Example 1
Referring to fig. 1 to 7, the present embodiment provides an drift diameter adjuster, which is an auxiliary instrument for adjusting the effective drift diameter of a stent. The drift diameter adjuster provided in this embodiment is suitable for a drift diameter adjustable bracket, and includes a support skeleton and a coating film 3 that covers the support skeleton.
The drift diameter adjuster comprises a main body, a plurality of adjusting wires 4, a damping fixing piece and a fixing seat 12. The main body is provided with a plurality of adjusting wire channels, and the adjusting wire channels are in one-to-one correspondence with the adjusting wires 4. The damping fixing piece is connected to the supporting framework, the distal end of the adjusting wire 4 (the distal end refers to the end far away from the operator in the conveying direction of the path-adjustable bracket during operation, the proximal end refers to the end close to the operator in the conveying direction of the path-adjustable bracket during operation) is connected to the supporting framework, and the proximal end of the adjusting wire 4 extends into the corresponding adjusting wire channel after passing through the damping fixing piece and is connected with the adjusting wire connector 11 after extending out. The plurality of adjusting wires 4 are distributed along the circumferential direction of the supporting framework.
The adjusting wire 4 is provided with a break-off node 9 at a portion in the adjusting wire channel. The adjusting wire connector 11 is mounted on the fixing seat 12, and the adjusting wire connector 11 can rotate relative to the fixing seat 12 under the action of external force to drive the adjusting wire 4 to twist, so that the adjusting wire 4 is disconnected at the disconnection node 9 due to the rotation torque. Thus, when the diameter adjustment of the diameter-adjustable stent is completed, the adjustment wire 4 may be disconnected by rotating the adjustment wire connector 11, and then the portion of the adjustment wire 4 relatively near the proximal end may be withdrawn together with the other portion of the diameter adjuster (excluding the damping mount).
The damping is arranged between the adjusting wire 4 and the damping fixing piece when the adjusting wire passes through the damping fixing piece so as to keep the relative positions of the adjusting wire 4 and the damping fixing piece unchanged, so that after the adjustment of the drift diameter adjustable bracket is finished and the adjusting wire 4 is disconnected at the disconnection node 9, the relative positions between the adjusting wire 4 and the damping fixing piece on the drift diameter adjustable bracket are unchanged, and the drift diameter adjustable bracket can keep the current situation.
When the fixing seat 12 moves in the proximal direction relative to the main body under the action of external force, and all the adjusting wire connectors 11 respectively drive all the adjusting wires 4 to overcome the corresponding damping to move in the proximal direction, the distal ends of the adjusting wires 4 drive the supporting framework connected with the adjusting wires to move in the direction of the damping fixing piece, and when the distance between the connecting part of the supporting framework and the damping fixing piece and the connecting part of the supporting framework and the distal end of the adjusting wires 4 is reduced, the minimum diameter of the diameter adjustable bracket is reduced. Therefore, by using the path adjuster provided by the present embodiment, the effective path of the path-adjustable bracket can be reduced.
The following describes the path adjuster of the present embodiment further:
The distal end of the adjusting wire 4 is fixedly connected with the supporting framework, and specifically, welding connection and the like can be adopted. The damping fixing piece is fixedly connected with the supporting framework, and particularly, welding connection and the like can be adopted. The damping fixing piece is provided with a plurality of through holes which are in one-to-one correspondence with the adjusting wires 4. The adjusting wires 4 may be arranged along the longitudinal structure of the support frame, and when the adjusting wires 4 extend in the proximal direction along the longitudinal structure of the support frame, the damping fixing member is provided with corresponding through holes at the positions when passing through the damping fixing member, and the adjusting wires 4 pass through the damping fixing member by penetrating the through holes. The friction resistance between the adjusting wire 4 and the side wall of the through hole forms the damping, and the damping exists so that the adjusting wire 4 can slide in the through hole only when the force for pulling the adjusting wire 4 is larger than a certain value, therefore, after the effective diameter of the adjustable support is adjusted by the diameter adjuster, the adjustable support can keep the current state after the adjusting wire 4 is disconnected at the disconnection node 9, and the adjustable support can not return to the state before the diameter adjuster is adjusted.
The break point 9 of the adjusting wire 4 is provided to be resistant to stretching and not to rotational torsion, so that the adjusting wire 4 does not break at the break point 9 when subjected to tensile forces and breaks easily when subjected to torsion. As to how to achieve a stretch-proof but not rotation torque-proof break-off node 9 of the adjusting wire 4, there are various implementations by cooperation of materials, structures, etc., such as providing a notch or the like in the middle of the kink as shown in fig. 7, which is not limiting here.
The main part includes base 7 and a plurality of adjusting collar 8, and adjusting collar 8 and adjusting wire 4 one-to-one are connected in base 7 to the proximal end of adjusting collar 8. The base 7 is provided with a plurality of first through holes, the first through holes are in one-to-one correspondence with the adjusting sleeves 8, and the first through holes are communicated with the internal channels of the corresponding adjusting sleeves 8 to form adjusting wire channels. Further, the distal end of the adjusting sleeve 8 may abut against the proximal end of the damping fixing member, so that when the adjusting wire 4 is pulled to move in the proximal direction by moving the fixing base 12, the adjusting sleeve 8 can provide an abutment force to the damping fixing member, so that the position of the damping fixing member is unchanged (of course, the damping fixing member is connected to the supporting frame, and even if the abutment action of the adjusting sleeve 8 is not provided, the damping fixing member can be kept stationary or only slightly moved).
An adjusting piece 10 is arranged between the base 7 and the fixed seat 12, and the adjusting piece 10 is used for driving the fixed seat 12 to move towards the proximal direction relative to the main body under the action of external force, so that an adjusting wire connector 11 arranged on the fixed seat 12 drives the adjusting wire 4 to move towards the proximal direction against damping. Specifically, the adjusting member 10 is sleeved on the base 7 and is in threaded connection with the base 7, when the adjusting member 10 rotates on the base 7 through threaded connection with the base 7, the adjusting wire 4 can move in a proximal direction relative to the base 7, and the adjusting member 10 is connected with the fixing base 12 and is configured to drive the fixing base 12 to move in a proximal direction relative to the base 7 when the adjusting member 10 moves in the proximal direction relative to the base 7. In the present embodiment, the adjusting member 10 is connected to the fixing base 12 by abutting the proximal end of the adjusting member 10 against the distal end of the fixing base 12, and of course, other connection methods, such as bearing connection, may be adopted in other embodiments.
The proximal end face of the fixing seat 12 is provided with a plurality of mounting grooves which are respectively used for accommodating the adjusting wire joints 11, namely, the mounting grooves are in one-to-one correspondence with the adjusting wire joints 11. The fixing seat 12 is provided with a second through hole corresponding to the mounting groove, the proximal end of the second through hole is communicated with the mounting groove from the bottom surface of the mounting groove, and the proximal end of the adjusting wire 4 passes through the second through hole to enter the mounting groove after extending out of the adjusting wire channel and is connected with the adjusting wire connector 11 from the distal end of the adjusting wire connector 11. Friction force for preventing the self rotation of the adjusting wire connector 11 is arranged between the outer side wall of the adjusting wire connector 11 and the inner side wall of the mounting groove. The proximal end face of the adjusting wire connector 11 is provided with a connecting part, the connecting part is used for being connected with an external tool, and the adjusting wire connector 11 overcomes the friction force to rotate in the mounting groove under the action of the torque applied by the external tool. The specific structure of the connection portion is designed according to the specific shape of the external tool to be used in designing, for example, when the drift diameter regulator is expected to drive the adjusting screw joint 11 to rotate by a star-shaped socket head cap screw driver in designing, the connection portion may be a groove which is arranged on the proximal end face of the adjusting screw joint 11 and matches with the shape of the tool bit of the star-shaped socket head cap screw driver. And the existence of the friction force between the outer side wall of the adjusting wire connector 11 and the inner side wall of the mounting groove for preventing the adjusting wire connector 11 from rotating can effectively prevent misoperation.
Example 2
Referring to fig. 1 to 3, 5 and 6, the present embodiment provides an adjustable diameter stent system including an adjustable diameter stent and the diameter adjuster described in embodiment 1 for adjusting the effective diameter of the poking adjustable stent.
The adjustable support of latus rectum includes the supporting framework and covers the tectorial membrane 3 of locating on the supporting framework, and the supporting framework has the adjustment section along its axis direction, and the adjustment section includes a plurality of support rings 2 and a plurality of support piece 1, and a plurality of support rings 2 are arranged along the axis direction of supporting framework interval side by side, and support piece 1 extends along the axis direction of supporting framework and is connected with support ring 2 in proper order, and a plurality of support pieces 1 are arranged along the circumference of supporting framework.
The damping mount is connected to the proximal end of the support 1 or/and to the support ring 2 located at the most proximal end, and the distal end of the adjusting wire 4 is connected to the distal end of the support 1 or/and to the support ring 2 located at the most distal end. When the distance between the connection part of the support framework and the damping fixing part and the connection part of the support framework and the distal end of the adjusting wire 4 is reduced, namely the axial length of the adjusting section is reduced, in order to enable the axial length of the adjusting section to be reduced, the support part 1 is deformed inwards, the supporting part 1 is deformed inwards to enable the drift diameter D1 of the deformed part to be reduced, so that the minimum drift diameter of the corresponding area of the adjusting section is reduced, and the effective drift diameter of the drift diameter adjustable support is reduced.
In particular, the entire support skeleton may be formed by laser cutting on the same piece of material, wherein one of the sections of the entire support skeleton in the axial direction is used as the adjustment section, and it should be noted that the adjustment section needs to be the middle portion of the support skeleton and not the end portions of the support skeleton, and that only the structure in the adjustment section in the entire support skeleton is referred to as the support ring 2 and the support member 1. That is, even though there is a structure like the support ring 2 in the outer part of the adjustment section on the support frame, only the structure in the adjustment section is called the support ring 2, the support ring 2 at the most proximal and the most distal ends refers to the structure at the most distal ends in the adjustment section, even if the support member 1 extends out of the adjustment section area toward both ends, only the part in the adjustment section is called the support member 1, the proximal and distal ends of the support member 1 refer to the proximal and distal ends of the part of this member containing the support member 1 in the adjustment section. The support ring 2 is called a "ring", but is used only to indicate that it is closed in the circumferential direction of the support frame, and does not necessarily mean an annular shape.
The adjusting wires 4 are preferably arranged along the longitudinal structure of the support skeleton. In the adjustment section the longitudinal structure of the support skeleton is the support 1, so that the adjustment wire 4 is preferably arranged along the support 1 in the adjustment section, the distal end of the adjustment wire 4 being connected to the support 1. In this embodiment, each adjusting wire 4 corresponds to a supporting member 1, and the distal end of the adjusting wire 4 is connected to the corresponding supporting member 1 by welding or the like.
The support 1 is made of an elastic material and has elasticity. When the portion of the adjustment section connected to the distal end of the adjustment wire 4 approaches the portion connected to the damping mount, the support member 1 is forced to arch inwardly.
Specifically, as shown in fig. 2 and 3, the support member 1 corresponding to the adjustment wire 4 has a plurality of deformed sections and a plurality of non-deformed sections, which are arranged at intervals. The support 1, corresponding to the adjusting wire 4, has an internal passage, in the non-deformed section area the adjusting wire 4 being located inside the internal passage of the support 1 and in the deformed section area the adjusting wire 4 being located outside the support 1. The support 1 is provided with a transformation through hole which is communicated with the internal channel and the outside at the junction of the deformation section and the non-deformation section, and the transformation through hole is used for the adjusting wire 4 to penetrate, so that the adjusting wire 4 can enter the internal channel of the support 1 from the outside or the adjusting wire 4 can leave from the internal channel of the support 1. When the portion of the adjustment section connected to the distal end of the adjustment wire 4 approaches the portion connected to the damping mount, the deformed section of the support member 1 arches inwardly. Preferably, each supporting piece 1 is provided with a deformation section and a non-deformation section, the junction of the deformation section and the non-deformation section is positioned at the connection part of the supporting piece 1 and the supporting ring 2, and in the supporting piece 1 without the adjusting wire 4, the junction of the deformation section and the non-deformation section is not provided with a transformation through hole.
As shown in fig. 3, the length of L9 is constant from the distal end of the adjustment wire 4 and the fixed point 13 on the support 1 (i.e. the length of the adjustment wire 4 in the proximal direction from its connection with the support 1 is constant), and the sum l2+l3..+ -. L7 must be smaller when L1 is changed, for example when L1 is larger (the adjustment wire 4 is pulled in the proximal direction). Where L2, L3, L4 are the forces that the adjusting wire 4 passes through from the inner channel of the support 1 (i.e. the non-deformed section), the force to change L2, L3, L4 is the force that is required to collapse the material, here F1 is tentatively set. The force required to change L5, L6, and L7 (corresponding to the deformation section) is the force required to bend and arch the material, here F2 is tentatively set. F1 is far greater than F2, and when L1 becomes large, the variation occurs in L5, L6, L7, L5, L6, L7 becoming smaller, and the deformed section of the support member 1 arches according to the principle of "who is weak and who is first to become". The rest of the support 1 without the corresponding adjusting wire 4 will also be arched inwards correspondingly by the deformed section of the support 1 due to the action of the support ring 2.
The damping fixing piece can comprise a plurality of damping fixing units 5, the damping fixing units 5 are in one-to-one correspondence with the adjusting wires 4, and through holes are formed in each damping fixing unit 5 and used for corresponding to the penetrating of the adjusting wires 4. The damping fixing units 5 are in one-to-one correspondence with the adjusting wires 4, the supporting pieces 1 are also in one-to-one correspondence with the adjusting wires 4, and the damping fixing units 5 are connected to the supporting pieces 1 corresponding to the adjusting wires 4. The distal ends of the adjustment wires 4 are connected to the corresponding support 1, the adjustment wires 4 being arranged along the support 1, the adjustment wires 4, when extending in the proximal direction, passing through the through holes in the corresponding damping fixing units 5 and then extending into the corresponding adjustment wire channels. Of course, in other embodiments, the damping mount may take other forms, for example it may be an annular form like the support ring 2, on which a plurality of through holes or the like are provided depending on the position of the adjusting wire 4.
Preferably, the connection of the distal ends of all the adjustment wires 4 to the respective support 1 on the adjustment section is in the same plane, perpendicular to the axis of the adjustment section. The joints of all damping fixing units 5 and the supporting pieces 1 on the adjusting section are positioned in the same plane, and the axis of the plane adjusting section is vertical.
The tectorial membrane 3 sets up in supporting framework's inside, and the adjustment section is stretched out at tectorial membrane 3 both ends, and the longitudinal structure in the outer region of adjustment section is woven together.
Example 3
Referring to fig. 4 to 6, the present embodiment provides an adjustable diameter stent system based on embodiment 2. The difference between this embodiment and embodiment 2 is that the adjustable diameter stent is different in that the manner in which the support member 1 deforms inwardly is different when the portion of the adjustment section connected to the distal end of the adjustment wire 4 approaches the portion connected to the damping mount. That is, the specific design of the support member 1 is different from that in embodiment 2.
In this embodiment, the support member 1 has a plurality of inflection points 6 disposed at intervals along the extending direction thereof, and the support member 1 is deformed inwardly by the inflection points 6 when the portion of the adjustment section connected to the distal end of the adjustment wire 4 approaches the portion of the damping mount. In particular, the support 1 has, along its extension, a first section, a second section and a third section, the second section being intermediate the first section and the third section. On the support 1 corresponding to the adjusting wire 4, the adjusting wire 4 is penetrated in the internal channels of the first section and the third section, and on the corresponding area of the second section, the adjusting wire 4 is positioned outside the support 1. The support piece 1 part of the second section is divided into a plurality of rod units which are connected in sequence, the rod units are connected in a rotating way through a rotating shaft, and the rod units at the head end and the tail end are respectively connected with the first section and the third section in a rotating way through the rotating shaft. The turning point 6 on the support 1 is the rotation axis.
When the adjustment wire 4 is pulled to move in the proximal direction, the length of the support 1 in the axial direction of the support frame is forced to decrease, and at this time, the length of the support 1 in the axial direction of the support frame can be forced to decrease mainly in two ways, namely, ① flattening the first and third sections of the support 1 and ② rotating the rod unit in the second section of the support 1. The friction of the rod unit against the rotation axis causes the rod unit to rotate with a much smaller force than the force required to collapse the first and third sections of the support 1. Thus, when the portion of the adjustment section connected to the distal end of the adjustment wire 4 approaches the portion of the damping fixture, i.e. the adjustment wire 4 is pulled to move in the proximal direction, the rod units in the support 1 will rotate, causing the support 1 to deform inwardly.
In particular, the turning point 6, i.e. the rotation axis, on the support 1 may be arranged at the connection with the support ring 2.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, it is within the scope of the appended claims and their equivalents to fall within the scope of the invention.

Claims (9)

1.一种通径调节器，其特征在于，适用于通径可调节支架，所述通径可调节支架包括支撑骨架和覆设于所述支撑骨架上的覆膜，所述通径调节器包括主体、若干调节丝、阻尼固定件和固定座；1. A diameter regulator, characterized in that it is suitable for a diameter adjustable bracket, the diameter adjustable bracket comprises a support frame and a coating covered on the support frame, the diameter regulator comprises a main body, a plurality of adjustment wires, a damping fixing member and a fixing seat; 所述阻尼固定件连接于所述支撑骨架，所述主体上设有若干所述调节丝通道，所述调节丝通道与所述调节丝一一对应，所述调节丝的远端连接于所述支撑骨架，所述调节丝的近端经过所述阻尼固定件后伸入对应的所述调节丝通道并在伸出后连接调节丝接头；若干所述调节丝沿所述支撑骨架的周向排布；The damping fixing member is connected to the supporting frame, and the main body is provided with a plurality of adjusting wire channels, and the adjusting wire channels correspond to the adjusting wires one by one. The distal end of the adjusting wire is connected to the supporting frame, and the proximal end of the adjusting wire passes through the damping fixing member and extends into the corresponding adjusting wire channel and is connected to the adjusting wire connector after extending out; the plurality of adjusting wires are arranged along the circumference of the supporting frame; 所述调节丝在所述调节丝通道内的部分上设有断开节点；所述调节丝接头安装于所述固定座，所述调节丝接头可在外力作用下相对所述固定座自转以带动所述调节丝扭转，使所述调节丝在所述断开节点处因旋转扭力而断开；The adjusting wire is provided with a disconnecting node on the portion inside the adjusting wire channel; the adjusting wire joint is installed on the fixing seat, and the adjusting wire joint can rotate relative to the fixing seat under the action of external force to drive the adjusting wire to twist, so that the adjusting wire is disconnected at the disconnecting node due to the rotational torque; 所述调节丝经过所述阻尼固定件时与所述阻尼固定件之间具有阻尼以保持两者的相对位置不变；当所述固定座在外力作用下相对所述主体向近端方向移动而使所有所述调节丝接头分别带动所有所述调节丝克服对应所述阻尼向近端方向移动时，所述调节丝的远端带动与其连接的所述支撑骨架处向所述阻尼固定件方向移动；When the adjusting wire passes through the damping fixing part, there is damping between the adjusting wire and the damping fixing part to keep the relative positions of the two unchanged; when the fixing seat moves toward the proximal direction relative to the main body under the action of external force and all the adjusting wire joints respectively drive all the adjusting wires to overcome the corresponding damping and move toward the proximal direction, the distal end of the adjusting wire drives the supporting frame connected thereto to move toward the damping fixing part; 其中，当所述支撑骨架上与所述阻尼固定件的连接处和与所述调节丝远端的连接处之间的距离减小时，所述通径可调节支架的最小通径减小。When the distance between the connection point between the support frame and the damping fixing member and the connection point with the distal end of the adjusting wire decreases, the minimum diameter of the adjustable diameter bracket decreases. 2.根据权利要求1所述的通径调节器，其特征在于，所述主体包括基座和若干调节套，所述调节套与所述调节丝一一对应，所述调节套的近端连接于所述基座；所述基座上设有若干第一通孔，所述第一通孔与所述调节套一一对应，所述第一通孔与对应所述调节套的内部通道连通以形成所述调节丝通道。2. The diameter adjuster according to claim 1 is characterized in that the main body includes a base and a plurality of adjustment sleeves, the adjustment sleeves correspond one-to-one to the adjustment wires, and the proximal end of the adjustment sleeves is connected to the base; a plurality of first through holes are provided on the base, the first through holes correspond one-to-one to the adjustment sleeves, and the first through holes are connected to the internal channels of the corresponding adjustment sleeves to form the adjustment wire channels. 3.根据权利要求2所述的通径调节器，其特征在于，所述调节套的远端抵接于所述阻尼固定件的近端。3 . The diameter adjuster according to claim 2 , wherein the distal end of the adjusting sleeve abuts against the proximal end of the damping fixing member. 4.根据权利要求1所述的通径调节器，其特征在于，所述主体和所述固定座之间设有调节件，所述调节件用于在外力作用下驱动所述固定座相对所述主体向近端方向移动，以使安装于所述固定座上的所述调节丝接头带动所述调节丝克服所述阻尼向近端方向移动。4. The diameter regulator according to claim 1 is characterized in that an adjusting member is provided between the main body and the fixing seat, and the adjusting member is used to drive the fixing seat to move in the proximal direction relative to the main body under the action of an external force, so that the adjusting wire joint installed on the fixing seat drives the adjusting wire to overcome the damping and move in the proximal direction. 5.根据权利要求4所述的通径调节器，其特征在于，所述调节件套设于所述主体并与其螺纹连接，且所述调节件可通过所述螺纹连接实现相对所述主体向近端方向移动；5. The diameter regulator according to claim 4, characterized in that the regulating member is sleeved on the main body and threadedly connected thereto, and the regulating member can be moved in a proximal direction relative to the main body through the threaded connection; 所述调节件与所述固定座连接，且连接方式被配置为当所述调节件相对所述主体向近端方向移动时驱动所述固定座相对所述主体向近端方向移动。The adjusting member is connected to the fixing seat, and the connection is configured to drive the fixing seat to move in the proximal direction relative to the main body when the adjusting member moves in the proximal direction relative to the main body. 6.根据权利要求5所述的通径调节器，其特征在于，所述调节件与所述固定座的连接方式为：所述调节件的近端抵接于所述固定座的远端。6 . The diameter adjuster according to claim 5 , wherein the adjusting member and the fixing seat are connected in such a manner that a proximal end of the adjusting member abuts against a distal end of the fixing seat. 7.根据权利要求1所述的通径调节器，其特征在于，所述固定座的近端端面上设有若干安装槽，分别用于容置所述调节丝接头；所述固定座上设有与所述安装槽对应的第二通孔且所述第二通孔的近端从所述安装槽的槽底面连通所述安装槽，所述调节丝的近端在伸出所述调节丝通道后穿过所述第二通孔进入所述安装槽，并从所述调节丝接头的远端与所述调节丝接头连接；7. The diameter regulator according to claim 1, characterized in that a plurality of mounting grooves are provided on the proximal end surface of the fixing seat, respectively used to accommodate the adjusting wire joints; a second through hole corresponding to the mounting groove is provided on the fixing seat, and the proximal end of the second through hole is connected to the mounting groove from the groove bottom surface of the mounting groove, and the proximal end of the adjusting wire passes through the second through hole into the mounting groove after extending out of the adjusting wire channel, and is connected to the adjusting wire joint from the distal end of the adjusting wire joint; 所述调节丝接头的外侧壁和所述安装槽的内侧壁之间具有防止所述调节丝接头自转的摩擦力；所述调节丝接头的近端端面上设有连接部，所述连接部用于与外部工具连接，所述调节丝接头在受到外部工具施加的扭矩作用下克服所述摩擦力在所述安装槽内自转。There is friction between the outer wall of the adjusting wire joint and the inner wall of the mounting groove to prevent the adjusting wire joint from rotating. A connecting portion is provided on the proximal end face of the adjusting wire joint, and the connecting portion is used to connect with an external tool. The adjusting wire joint overcomes the friction force and rotates in the mounting groove under the action of the torque applied by the external tool. 8.根据权利要求1所述的通径调节器，其特征在于，所述阻尼固定件上设有用于所述调节丝穿设的贯穿孔，每一所述调节丝穿设一所述贯穿孔且所述调节丝与所述贯穿孔侧壁之间的摩擦阻力形成所述阻尼。8. The diameter adjuster according to claim 1 is characterized in that the damping fixing piece is provided with a through hole for the adjusting wire to pass through, each adjusting wire passes through one through hole and the friction resistance between the adjusting wire and the side wall of the through hole forms the damping. 9.一种通径可调节支架系统，其特征在于，包括通径可调节支架和如权利要求1至8任意一项所述的通径调节器；9. A diameter-adjustable bracket system, characterized in that it comprises a diameter-adjustable bracket and a diameter adjuster according to any one of claims 1 to 8; 所述通径可调节支架包括支撑骨架和覆设于所述支撑骨架上的覆膜，所述支撑骨架沿其轴线方向具有调节段，所述调节段包括若干支撑环和若干支撑件，若干所述支撑环沿所述支撑骨架的轴线方向并排间隔设置，所述支撑件沿所述支撑骨架的轴线方向延伸并依次与所述支撑环连接，若干所述支撑件沿所述支撑骨架的周向排布；The adjustable diameter bracket comprises a support frame and a coating covered on the support frame, the support frame has an adjustment section along its axial direction, the adjustment section comprises a plurality of support rings and a plurality of support members, the plurality of support rings are arranged side by side and spaced along the axial direction of the support frame, the support members extend along the axial direction of the support frame and are sequentially connected to the support rings, and the plurality of support members are arranged along the circumference of the support frame; 所述阻尼固定件与所述支撑件的近端或/和位于最近端的所述支撑环连接，所述调节丝的远端与所述支撑件的远端或/和位于最远端的所述支撑环连接；The damping fixing member is connected to the proximal end of the supporting member or/and the supporting ring located at the most proximal end, and the distal end of the adjusting wire is connected to the distal end of the supporting member or/and the supporting ring located at the most distal end; 当所述支撑骨架上与所述阻尼固定件的连接处和与所述调节丝远端的连接处之间的距离减小时，所述支撑件向内变形而减小所述通径可调节支架在所述调节段对应区域的最小通径。When the distance between the connection point between the support frame and the damping fixing member and the connection point with the distal end of the adjustment wire decreases, the support member deforms inwardly to reduce the minimum diameter of the adjustable diameter bracket in the corresponding area of the adjustment section.
CN202411024603.5A 2024-07-29 2024-07-29 A diameter regulator and a diameter-adjustable bracket system Active CN119367098B (en)

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