CN113951983A

CN113951983A - Calculus removing device for hepatobiliary surgery

Info

Publication number: CN113951983A
Application number: CN202111440985.6A
Authority: CN
Inventors: 彭宁; 何松青
Original assignee: First Affiliated Hospital of Guangxi Medical University
Current assignee: First Affiliated Hospital of Guangxi Medical University
Priority date: 2021-11-30
Filing date: 2021-11-30
Publication date: 2022-01-21

Abstract

The invention discloses a calculus extraction device for hepatobiliary surgery, comprising a sheath tube, a mesh rope is arranged in the sheath tube, both ends of the mesh rope extend to the outside of the sheath tube, and a mesh rope is arranged at the tail of the sheath tube The handle mechanism is connected, and a basket net is arranged at the front end of the net rope, and the end of the net rope close to the basket net is provided with a pressurizing part for assisting the use of the basket net for stone crushing. This hepatobiliary surgery stone extraction device is different from the current According to the technology, in the actual removal process of calculi in hepatobiliary surgery, especially for large and hard calculi, a mesh rope can be used to push the compression member out of the sheath and contact with the calculi, so as to use the compressive force during the crushing process of the mesh basket. The compression mechanism is pressurized to assist the stone crushing, which effectively improves the stone crushing ability of the stone extraction basket, and ensures the efficient removal and use of liver and gallstones.

Description

Calculus removing device for hepatobiliary surgery

Technical Field

The invention relates to the technical field of medical auxiliary instruments, in particular to a calculus removing device for a hepatobiliary surgery.

Background

The calculus is a solid block formed in the cavity of duct or cavity organ (such as kidney, ureter, gallbladder or bladder) in human body or animal body, mainly found in gallbladder, bladder and renal pelvis, also can be found in the cavity of pancreatic duct, salivary gland duct, etc., and is composed of inorganic salt or organic matter, the calculus generally has a core composed of desquamated epithelial cell, bacterial mass, parasitic ovum or polypide, fecal mass or foreign matter, the inorganic salt or organic matter is deposited on the core layer by layer, because of the difference of affected organs, the composition, shape, texture, influence on organism, etc. contained in the mechanism of calculus formation are different. In general, calculus can cause obstruction of the lumen, affecting the drainage of fluid from the affected organ, causing symptoms such as pain, bleeding or secondary infection.

At present, there are two main means for treating calculus clinically, one is to use nuclear magnetic resonance to break stone in vitro and then naturally discharge the stone through the urinary system; the other is that the operation mode is used for manual direct taking out. The treatment mode of the nuclear magnetic resonance extracorporeal calculus is that the calculus is discharged by the urinary system, so more calculus is still suitable for kidney calculus and urinary system calculus, and more calculus is still an operation mode for liver and gall calculus.

The utility model discloses a garrulous integrative basket of stone of getting is got to the general basket of stone has or not seal wire guide basket, has seal wire guide basket, gets integrative basket of stone rubble and exchanges fast and get garrulous integrative basket four kinds, wherein do not consider use cost's the words, get garrulous integrative basket fast and use the most extensive toward time clinician, its the repeated exchange of accessory in having simplified the operation greatly, can effectively simplify the operation content to effectively shorten the time of getting stone and other operations.

However, when the most commonly used fast-crushing integrated basket structure meets a large and hard calculus in the clinical operation process, because the basket core consists of basket wires (titanium-nickel alloy) and pull steel wires (304 medical stainless steel), although the basket core has good tensile force and toughness, the basket core also has a limit and is influenced by the hardness of the calculus, when the basket wires are continuously tightened at any time, the basket is already protectively crushed when the calculus is not crushed, so that the crushing capability of the calculus is poor, the taking-out and use of the calculus is influenced, in addition, when the crushed calculus is taken out, because the calculus can be crushed to different degrees to form a convenient bevel edge, and the interval between the adjacent basket wires is relatively large when the existing basket calculus is sleeved in the basket, the intestinal tract of the sharp calculus is easily scratched or the position of a sore when the sharp calculus is taken out, and unnecessary damage is caused to a patient, therefore, a calculus removing device for the hepatobiliary surgery is provided.

Disclosure of Invention

The invention aims to provide a calculus removing device for a hepatobiliary surgery, which solves the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a calculus removing device for a hepatobiliary surgery comprises a sheath tube, wherein a net rope is arranged in the sheath tube, two ends of the net rope extend to the outer side of the sheath tube, a handle mechanism connected with the net rope is arranged at the tail part of the sheath tube, a basket net is arranged at the front end of the net rope, a pressurizing part used for assisting basket net calculus crushing is arranged at one end, close to the basket net, of the net rope, the pressurizing part is located in the sheath tube and is moved out of the sheath tube along with movement of the net rope to pressurize calculus;

the net rope comprises a first rope body and a second rope body, the basket net is of an outward expansion type structure, two ends of the first rope body and the second rope body are respectively connected with the handle mechanism and the basket net, the first rope body and the second rope body are pulled by the handle mechanism in sequence, and the basket net is driven to expand outward through the sequential movement of the first rope body and the second rope body.

Preferably, the pressurizing component comprises a top seat arranged in the sheath tube in a sliding manner, the first rope body and the second rope body both penetrate through the top seat in a sliding manner, a top cone is arranged at the front end of the top seat, a first groove is formed in the middle of the front end of the top seat, and the first rope body and the second rope body both penetrate through the first groove;

the sheath catheter is characterized by also comprising a sliding seat arranged in the sheath catheter in a sliding manner, wherein the sliding seat is positioned at the tail end of the top seat and is connected with the net rope, and the sliding seat is driven to eject the top seat out of the sheath catheter when the net rope moves;

and the tail part of the top seat is also provided with a limiting part, when the top seat is pushed out of the sheath tube, the limiting part is touched to be contacted with the end part of the sheath tube so as to limit the top seat to automatically enter the sheath tube, and when the basket net is driven to shrink by pulling the net rope, the tip cone is contacted with the calculus and continuously pressurizes and carries out top crushing.

Preferably, two sides of the top seat are both provided with a second groove, the limiting part comprises rotating shafts which are respectively arranged in the second grooves and close to the front end of the top seat, and the rotating shafts are both rotatably provided with deflection top shafts;

the deflection top shaft is extruded by the inner wall of the sheath pipe to be contracted in the second groove, and the elastic part is extruded to be contracted.

Preferably, the elastic piece comprises an elastic piece arranged in the second groove.

Preferably, the first rope body penetrates through the sliding seat and is fixed with the sliding seat, and the second rope body penetrates through the sliding seat in a sliding manner;

the basket net comprises an end head, a plurality of first net wires are arranged on the end head, the end parts of the first net wires are connected with a first rope body, and the first net wires are driven to enter a sheath tube when the first rope body is pulled so as to wrap stones;

the stone basket is characterized by further comprising a plurality of second net wires which are installed on the end heads and correspond to the first net wires one to one, the first net wires are in parallel contact with and abut against the second net wires corresponding to the first net wires, a limiting seat is installed on the first net wires and moves along with the first net wires, the second net wires all slide to pass through the limiting seat, and when the second net wires are pulled, the first net wires are expanded outwards to increase the wrapping area of the basket net on stones.

Preferably, the handle mechanism comprises a base arranged at the end part of the sheath tube, the end part of the base is provided with a buckle seat, the buckle seat and the base are hollow and communicated hollow structures, an extension rod is arranged in the buckle seat in a sliding manner, the first rope body penetrates through the base and then is connected with the extension rod in the buckle seat, the end part of the extension rod is provided with a buckle ring, and the first rope body is driven to move when the extension rod and the buckle seat are relatively displaced by utilizing the buckle ring;

the rope body II is connected with the connecting piece, so that the rope body II is independently arranged on the base to move, the base is further provided with a butt joint piece, and the connecting piece and the rope body are integrally connected through the butt joint piece to move synchronously.

Preferably, the base is of a hollow tubular structure, a through groove is formed in the side wall of the base in a penetrating mode, the through groove extends along the axial direction of the base, the connecting piece comprises a first connecting seat which is arranged in the through groove in a sliding mode, two ends of the first connecting seat are located on the inner side and the outer side of the base respectively, and the second rope body is connected with one end, located in the base, of the first connecting seat;

and a first lantern ring is slidably sleeved outside the base, and one end of the first connecting seat, which is positioned outside the base, is connected with the first lantern ring so as to utilize the lantern ring to directly pull the two rope bodies to move relative to the first rope body.

Preferably, the butt joint part comprises a second lantern ring arranged outside the base in a sliding mode, a second connecting seat is arranged on the inner side of the second lantern ring, and the second connecting seat is connected with the first rope body after penetrating through the through groove in a sliding mode so that the second lantern ring and the first rope body act synchronously;

the inner wall of the first lantern ring close to one side of the second lantern ring is provided with a threaded groove, a threaded convex ring is arranged on one side of the second lantern ring close to one side of the lantern ring, and the threaded convex ring is in threaded connection with the threaded groove in a matched mode, so that the first lantern ring and the second lantern ring are integrally butted.

Compared with the prior art, the invention has the beneficial effects that:

compared with the prior art, the pressurizing mechanism has the advantages that in the actual process of taking out the calculus in the hepatobiliary surgery, particularly when large and hard calculus is treated, the pressurizing part can be pushed out of the sheath tube by using the net rope and is contacted with the calculus, so that the calculus crushing is assisted by pressurizing by using the pressurizing mechanism in the process of crushing the calculus by using the basket, the calculus crushing capability of the calculus-taking basket is effectively improved, and the efficient taking out and use of the hepatobiliary calculus is ensured;

in addition, can also utilize the special construction's that sets up basket net, net rope and handle mechanism's cooperation to use, and then can carry out more abundant parcel to the rubble that has sharp hypotenuse when the calculus is got in real time to effectively avoid it to appear the condition of scratch sore and intestinal when utilizing the basket net to take out it, effectively avoid causing the unnecessary damage for the patient.

Drawings

FIG. 1 is a schematic view of the overall structure of embodiment 1 of the present invention;

FIG. 2 is a schematic view of the three-dimensional partially sectioned structure of FIG. 1 according to the present invention;

FIG. 3 is a schematic plan view partially in section of FIG. 1 in accordance with the present invention;

FIG. 4 is an enlarged partial schematic view of FIG. 1 according to the present invention;

FIG. 5 is a schematic view of the handle mechanism of the present invention;

FIG. 6 is a schematic illustration of the partially exploded view of FIG. 5 in accordance with the present invention;

FIG. 7 is a schematic view of the butt-joint part of the present invention;

FIG. 8 is a structural schematic diagram of another state of FIG. 5 according to the present invention;

fig. 9 is a schematic view of a net rope structure in embodiment 2 of the present invention.

In the figure: 1. a sheath tube; 2. a net rope; 21. a first rope body; 22. a second rope body; 3. a handle mechanism; 31. a base; 32. a buckle seat; 33. an extension rod; 34. a retaining ring; 4. a basket net; 41. a tip; 42. a first mesh; 43. a second mesh; 44. a limiting seat; 5. a pressing member; 51. a top seat; 52. a tip cone; 53. a first groove; 54. a slide base; 6. a limiting member; 61. a second groove; 62. a rotating shaft; 63. deflecting the top shaft; 7. an elastic member; 71. a spring plate; 8. a connecting member; 81. a through groove; 82. a first connecting seat; 83. a lantern ring I; 9. a docking member; 91. a second connecting seat; 92. a second lantern ring; 93. a threaded groove; 94. and (4) a thread convex ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

Referring to fig. 1-8, the present invention provides a technical solution: the utility model provides a hepatobiliary surgery calculus remove device, includes sheath 1, is provided with net rope 2 in the sheath 1, and 2 both ends of net rope all extend to the sheath 1 outside, and are provided with the handle mechanism 3 of being connected with net rope 2 at 1 afterbody of sheath to be provided with basket net 4 at 2 front ends of net rope, under the normal use condition, basket net 4 is ordered about to net rope 2 and removes in sheath 1, and utilize handle mechanism 3, thereby satisfy the normal garrulous use of getting of calculus.

As an embodiment, the net rope 2 comprises a first rope body 21 and a second rope body 22, and similarly, as an embodiment, the basket net 4 comprises a head 41, a plurality of first net wires 42 are arranged on the head 41, the end parts of the first net wires 42 are connected with the first rope body 21, and when the first rope body 21 is pulled, the first net wires 42 are driven to enter the sheath tube 1 to wrap the stone;

the basket net 4 further comprises a plurality of second net wires 43 which are arranged on the end 41 and correspond to the first net wires 42 one by one, the first net wires 42 are in parallel contact with and abut against the corresponding second net wires 43, a limiting seat 44 is arranged on the first net wires 42, the limiting seat 44 moves along with the first net wires 42, the second net wires 43 slide through the limiting seat 44, and in the using process, the limiting seat 44 is utilized to enable the first net wires 42 and the second net wires 43 to be in contact with each other in the normal stone taking process of the basket net 4, so that the inconvenience brought to the stone nesting due to the small distance between the adjacent net wires caused by natural outward expansion is avoided;

for the above characteristics, when the second net wire 43 is pulled, and the end 41 drives the end of the first net wire 42 to be close to the sheath 1, but the whole first net wire 42 remains still, and at this time, the first net wire 42 cannot be attached to the second net wire 43 and expands outwards, so as to increase the area of the basket net 4 wrapped by the stones.

One end of each of the first rope body 21 and the second rope body 22 is connected with the handle mechanism 3, and the other end of each of the first rope body 21 and the second rope body 22 is connected with the first mesh 42 and the second mesh 43 respectively, wherein the handle mechanism 3 comprises a base 31 arranged at the end of the sheath tube 1, a buckle base 32 is arranged at the end of the base 31, the buckle base 32 and the base 31 are hollow and communicated hollow structures, an extension rod 33 is arranged in the buckle base 32 in a sliding manner, the first rope body 21 penetrates through the base 31 and then is connected with the extension rod 33 in the buckle base 32, a buckle ring 34 is arranged at the end of the extension rod 33, and the first rope body 21 is driven to move when the extension rod 33 and the buckle base 32 are relatively displaced by the buckle ring 34;

the rope-pulling device is characterized by further comprising a connecting piece 8 arranged on the base 31, the base 31 is of a hollow tubular structure, a through groove 81 penetrating through the side wall of the base 31 is formed in the side wall of the base 31, the through groove 81 extends along the axial direction of the base 31, the connecting piece 8 comprises a first connecting seat 82 arranged in the through groove 81 in a sliding mode, two ends of the first connecting seat 82 are located on the inner side and the outer side of the base 31 respectively, and the second rope body 22 is connected with one end, located in the base 31, of the first connecting seat 82;

and a first lantern ring 83 is slidably sleeved outside the base 31, and one end of the first connecting seat 82, which is positioned outside the base 31, is connected with the first lantern ring 83, so that the first lantern ring 83 is used for directly pulling the second rope body 22 to move relative to the first rope body 21.

The base 31 is also provided with an abutting piece 9, the abutting piece 9 comprises a second lantern ring 92 which is arranged outside the base 31 in a sliding manner, the inner side of the second lantern ring 92 is provided with a second connecting seat 91, and the second connecting seat 91 is connected with the first rope body 21 after sliding through the through groove 81, so that the second lantern ring 92 and the first rope body 21 synchronously act;

the inner wall of the first lantern ring 83 close to one side of the second lantern ring 92 is provided with a threaded groove 93, the side of the second lantern ring 92 close to the first lantern ring 83 is provided with a threaded convex ring 94, and the threaded convex ring 94 is in threaded connection with the threaded groove 93 in a matched mode, so that the first lantern ring 83 and the second lantern ring 92 are in butt joint integrally.

For the handle mechanism 3 with the characteristics, when taking gravels with sharp bevel edges, the first lantern ring 83 and the second lantern ring 92 are relatively separated in a normal state, the first lantern ring 83 is firstly used for pulling the second net wire 43 to wrap the gravels, meanwhile, the first net wire 42 is externally included, then the first net wire 42 is pulled by the retaining ring 34, so that the wrapping area of the gravels is effectively increased, the bevel edges of the gravels are effectively prevented from scratching intestinal tracts, then the first lantern ring 83 is butted with the second lantern ring 92 by the threaded groove 93 and the threaded convex ring 94, and therefore when the retaining ring 34 is pulled, the first rope body 21 and the second rope body 22 are stably pulled to synchronously move, and the gravels are stably taken.

In addition, a pressurizing part 5 for assisting the basket net 4 in breaking stones is arranged at one end, close to the basket net 4, of the net rope 2, the pressurizing part 5 comprises a top seat 51 which is arranged in the sheath pipe 1 in a sliding mode, the first rope body 21 and the second rope body 22 both penetrate through the top seat 51 in a sliding mode, a top cone 52 is arranged at the front end of the top seat 51, a first groove 53 is formed in the middle of the front end of the top seat 51, and the first rope body 21 and the second rope body 22 both penetrate through the first groove 53;

the sheath catheter further comprises a sliding seat 54 which is arranged in the sheath catheter 1 in a sliding mode, the sliding seat 54 is located at the tail end of the top seat 51, the first rope body 21 penetrates through the sliding seat 54 and is fixed with the sliding seat 54, the second rope body 22 penetrates through the sliding seat 54 in a sliding mode, and when the net rope 2 moves, the sliding seat 54 is driven to push the top seat 51 out of the sheath catheter 1;

a limiting piece 6 is further arranged at the tail of the top base 51, two grooves 61 are formed in two sides of the top base 51, the limiting piece 6 comprises rotating shafts 62 which are arranged in the grooves 61 respectively and close to the front end of the top base 51, and deflection top shafts 63 are rotatably arranged on the rotating shafts 62;

the top seat 51 is positioned in the sheath tube 1, the deflection top shaft 63 is extruded by the inner wall of the sheath tube 1 and is contracted in the groove two 61, the elastic part 7 is extruded to contract, the limiting part 6 is touched to deflect and eject the top seat 51 when the top seat 51 is ejected out of the sheath tube 1 and is contacted with the end part of the sheath tube 1 so as to limit the top seat 51 to automatically enter the sheath tube 1, and the top cone 52 is contacted with the calculus and continuously pressurized and crushed when the basket net 4 is driven to contract by pulling the net rope 2, in the process, the small area of the top cone 52 is contacted with the calculus and is matched with the wrapping, extruding and crushing of the basket net 4, so that the contact position of the top cone 52 and the calculus can generate enough stress, and the calculus crushing is effectively assisted.

As an embodiment, since the sheath tube 1 is thin, if a spring is selected to realize the function of the elastic element 7, the spring needs to be small enough, the requirement on the processing precision is high, and the rationalization is not sufficient, so that the elastic element 7 adopts the elastic sheet 71 mode to ensure the realization of the elastic deformation self-resetting capability, and the processing, the dismounting and the replacement of the elastic element 7 are effectively facilitated.

It should be noted that the first mesh wire 42 and the second mesh wire 43 are identical for the purpose of processing.

Example 2

Referring to fig. 9, the present invention provides a technical solution: the utility model provides a hepatobiliary surgery calculus remove device, includes sheath 1, is provided with net rope 2 in the sheath 1, and 2 both ends of net rope all extend to the sheath 1 outside, and are provided with the handle mechanism 3 of being connected with net rope 2 at 1 afterbody of sheath to be provided with basket net 4 at 2 front ends of net rope, under the normal use condition, basket net 4 is ordered about to net rope 2 and removes in sheath 1, and utilize handle mechanism 3, thereby satisfy the normal garrulous use of getting of calculus.

In this embodiment, as shown in fig. 9, the first mesh wire 42 and the second mesh wire 43 are a large-small structure, so that the single mesh wire can be smaller and more flat and beautiful after being attached, but the difficulty of processing the mesh wires is increased, and the mesh wires can be reasonably selected according to requirements.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A hepatobiliary surgery calculus removing device comprises a sheath tube (1), and is characterized in that: a net rope (2) is arranged in the sheath tube (1), two ends of the net rope (2) extend to the outer side of the sheath tube (1), a handle mechanism (3) connected with the net rope (2) is arranged at the tail of the sheath tube (1), a basket net (4) is arranged at the front end of the net rope (2), a pressurizing part (5) used for assisting the basket net (4) in breaking stones is arranged at one end, close to the basket net (4), of the net rope (2), the pressurizing part (5) is located in the sheath tube (1), and the net rope (2) moves out of the sheath tube (1) to pressurize the broken stones;

the net rope (2) comprises a first rope body (21) and a second rope body (22), the basket net (4) is of an outward expansion type structure, two ends of the first rope body (21) and the second rope body (22) are respectively connected with the handle mechanism (3) and the basket net (4), the first rope body (21) and the second rope body (22) are pulled by the handle mechanism (3) in sequence, and the basket net (4) is driven to expand by the fact that the first rope body (21) and the second rope body (22) move in sequence.

2. A hepatobiliary surgical stone retrieval device as recited in claim 1, further comprising: the pressurizing part (5) comprises a top seat (51) which is arranged in the sheath tube (1) in a sliding mode, the first rope body (21) and the second rope body (22) penetrate through the top seat (51) in a sliding mode, a top cone (52) is arranged at the front end of the top seat (51), a first groove (53) is formed in the middle of the front end of the top seat (51), and the first rope body (21) and the second rope body (22) penetrate through the first groove (53);

the sheath catheter is characterized by further comprising a sliding seat (54) which is arranged in the sheath catheter (1) in a sliding mode, wherein the sliding seat (54) is located at the tail end of the top seat (51) and is connected with the net rope (2), and when the net rope (2) moves, the sliding seat (54) is driven to eject the top seat (51) out of the sheath catheter (1);

and the tail part of the top seat (51) is also provided with a limiting piece (6), when the top seat (51) is ejected out of the sheath tube (1), the limiting piece (6) is triggered to be contacted with the end part of the sheath tube (1) so as to limit the top seat (51) to automatically enter the sheath tube (1), and when the net rope (2) is pulled to drive the basket net (4) to shrink, the tip cone (52) is contacted with the calculus and continuously pressurizes and ejects the calculus.

3. A hepatobiliary surgical stone retrieval device as recited in claim 2, further comprising: two grooves II (61) are formed in two sides of the top base (51), the limiting piece (6) comprises rotating shafts (62) which are respectively arranged in the grooves II (61) and close to the front end of the top base (51), and deflection top shafts (63) are rotatably arranged on the rotating shafts (62);

the elastic part (7) is arranged in the second groove (61), the footstock (51) is positioned in the sheath tube (1), the deflection top shaft (63) is extruded by the inner wall of the sheath tube (1) to be contracted in the second groove (61), and the elastic part (7) is extruded to be contracted.

4. A hepatobiliary surgical stone retrieval device as in claim 3, wherein: the elastic piece (7) comprises an elastic sheet (71) arranged in the second groove (61).

5. The device of claim 4 for removing stones in hepatobiliary surgery, wherein: the first rope body (21) penetrates through the sliding seat (54) and is fixed with the sliding seat (54), and the second rope body (22) penetrates through the sliding seat (54) in a sliding manner;

the basket net (4) comprises an end (41), a plurality of first net wires (42) are arranged on the end (41), the end parts of the first net wires (42) are connected with the first rope body (21), and when the first rope body (21) is pulled, the first net wires (42) are driven to enter the sheath tube (1) to wrap the calculus;

the stone-removing basket is characterized by further comprising a plurality of second net wires (43) which are arranged on the end head (41) and correspond to the first net wires (42) one by one, the first net wires (42) are in parallel contact with the second net wires (43) corresponding to the first net wires (42) to abut against each other, a limiting seat (44) is arranged on the first net wires (42), the limiting seat (44) moves along with the first net wires (42), the second net wires (43) penetrate through the limiting seat (44) in a sliding mode, and when the second net wires (43) are pulled, the first net wires (42) are expanded outwards to increase the area of the basket net (4) wrapped by stones.

6. The device of claim 5, wherein: the handle mechanism (3) comprises a base (31) arranged at the end part of the sheath tube (1), a buckling seat (32) is arranged at the end part of the base (31), the buckling seat (32) and the base (31) are of hollow and communicated hollow structures, an extension rod (33) is arranged in the buckling seat (32) in a sliding mode, the first rope body (21) penetrates through the base (31) and then is connected with the extension rod (33) in the buckling seat (32), a buckling ring (34) is arranged at the end part of the extension rod (33), and when the extension rod (33) and the buckling seat (32) are relatively displaced by utilizing the buckling ring (34), the first rope body (21) is driven to move;

the rope body II (22) is connected with the connecting piece (8) so as to independently set the rope body II (22) on the base (31) to move, the base (31) is further provided with a butt joint piece (9), and the butt joint piece (9) is utilized to integrally connect the connecting piece (8) with the rope body I (22) so as to enable the rope body I and the rope body I to synchronously move.

7. The device of claim 6, wherein: the base (31) is of a hollow tubular structure, a through groove (81) penetrating through the base (31) is formed in the side wall of the base (31), the through groove (81) extends axially along the base (31), the connecting piece (8) comprises a first connecting seat (82) arranged in the through groove (81) in a sliding mode, two ends of the first connecting seat (82) are located on the inner side and the outer side of the base (31) respectively, and the second rope body (22) is connected with one end, located in the base (31), of the first connecting seat (82);

and a first lantern ring (83) is slidably sleeved outside the base (31), one end, positioned outside the base (31), of the first connecting seat (82) is connected with the first lantern ring (83), so that the first lantern ring (83) is utilized to directly pull the second rope body (22) to move relative to the first rope body (21).

8. A hepatobiliary surgical stone retrieval device as in claim 7, wherein: the butt joint piece (9) comprises a second lantern ring (92) which is arranged outside the base (31) in a sliding mode, a second connecting seat (91) is arranged on the inner side of the second lantern ring (92), and the second connecting seat (91) is connected with the first rope body (21) after sliding through the through groove (81), so that the second lantern ring (92) and the first rope body (21) synchronously act;

the inner wall of one side, close to the second lantern ring (92), of the first lantern ring (83) is provided with a threaded groove (93), a threaded convex ring (94) is arranged on one side, close to the first lantern ring (83), of the second lantern ring (92), the threaded convex ring (94) is in adaptive threaded connection with the threaded groove (93), and therefore the first lantern ring (83) and the second lantern ring (92) are in integral butt joint.