Bile duct calculus removing net bag with elastic adaptation function

Abstract

The utility model relates to a bile duct calculus removing net bag with an elastic adaptation function, which belongs to the technical field of medical instruments and comprises an outer sheath tube with an open top end and an open bottom end, a first handle is fixed at the bottom end of the outer sheath tube, a calculus removing component used for elastic calculus removing is mounted on the outer side of the outer sheath tube, and a second handle is fixed at the bottom end of the outer sheath tube. The calculus removing assembly comprises a catheter fixed to the inner side of the outer sheath tube and extending to the outside through the top end of the outer sheath tube, an end tube fixed to the outer side of the catheter, a ball bag fixedly installed on the side, close to the end tube, of the outer side of the catheter, and a spring ring fixed to the bottom of the ball bag. The three metal wires are fixedly installed at the bottom of the spring ring and evenly distributed, the three guide grooves are formed in the inner side of the outer sheath tube, and the tops of the three guide grooves are open. The bile duct calculus removing net bag with the elastic adaptation function can conduct elastic adaptation deformation, and therefore the bile duct calculus removing net bag is not prone to causing stone leakage and not prone to causing damage caused by excessive expansion of the inner wall of the bile duct.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field, concretely is a kind of elastic adaptive function's gallbladder stone removal net pouch. BACKGROUND

[0002] Cholangiolar stone removal tool is used to remove gallstone in bile duct or foreign matter in upper and lower digestive tract structure, in prior art, common cholangiolar stone removal tool in market mainly has stone removal basket and stone removal balloon, are medical instrument for covering gallstone in bile duct and then taking out.

[0003] And for the common stone removal basket and stone removal balloon in existing market, there is certain degree of deficiency in the process of actual use, stone removal basket is not good when processing mud and sand stone, easy to cause stone leakage, and stone removal balloon is easy to cause overexpansion even tearing when pulling out duodenal nipple, therefore, an improved cholangiolar stone removal tool is needed, which can better adapt to different types of cholangiolar calculus and reduce damage to bile duct and duodenal nipple, based on this, the present application provides a kind of elastic adaptive function's gallbladder stone removal net pouch to solve the above problems. SUMMARY

[0004] (I) technical problem solved

[0005] In view of the deficiencies of the prior art, the utility model provides a kind of elastic adaptive function's gallbladder stone removal net pouch, with elastic adaptive deformation, so as to simultaneously have the advantages of not easy to cause stone leakage and not easy to cause damage to bile duct inner wall overexpansion, solve the problem that existing cholangiolar stone removal tool cannot simultaneously meet effective stone removal and bile duct inner wall damage.

[0006] (II) technical scheme

[0007] To realize the above-mentioned elastic adaptive deformation, so as to simultaneously have the advantages of not easy to cause stone leakage and not easy to cause damage to bile duct inner wall overexpansion, the utility model provides the following technical scheme: a kind of elastic adaptive function's gallbladder stone removal net pouch, including the outer sheath pipe that the top end and bottom end are all open, the bottom end of the outer sheath pipe is fixed with first handle, the outer side of the outer sheath pipe is installed with the stone removal assembly for elastic stone removal;

[0008] The calculus removing assembly comprises a catheter fixed to the inner side of the outer sheath and extending to the outside through the top end, an end tube fixed to the outer side of the catheter, a ball bag fixedly installed on the outer side of the catheter close to the side of the end tube, a spring ring fixed to the bottom of the ball bag, three metal wires fixedly installed on the bottom of the spring ring and uniformly distributed, three guide grooves opened on the inner side of the outer sheath and provided with openings at the top, a second handle fixed between the bottom ends of the three metal wires, a guide wire tube penetrating the inner side of the outer sheath and an injection tube penetrating the inner side of the outer sheath.

[0009] Further, the inner side of the outer sheath is fixedly installed with a supporting framework, and the length of the catheter is much greater than the length of the outer sheath.

[0010] Further, the ball bag is a transparent film and has a circular truncated cone shape, and the top opening of the ball bag is fixedly connected to the outer side of the catheter.

[0011] Further, the opening at the bottom of the ball bag is greater than the diameter of the catheter, and the outer side of the catheter is provided with an annular groove for inserting the spring ring.

[0012] Further, the three guide grooves are uniformly distributed on the outer side of the catheter, and the three guide grooves are respectively provided with the three metal wires slidingly connected, and the ends of the three metal wires close to the second handle are wound around each other and fixedly connected to the top of the second handle.

[0013] Further, the top of the first handle is provided with a communication hole in communication with the inner side of the outer sheath and for the metal wires to penetrate, and the top opening of the outer sheath can allow the three metal wires to normally spread and slide.

[0014] Further, one end of the guide wire tube and the injection tube penetrates the outer side of the outer sheath and extends to the outside, and the other end of the guide wire tube and the injection tube penetrates the inner side of the outer sheath, the inner side of the catheter and the inner side of the end tube in sequence and extends to the outside through the top end of the end tube.

[0015] (Three) beneficial effects

[0016] Compared with the prior art, the biliary calculus removing net bag with elastic adaptive function has the following beneficial effects:

[0017] The gallbladder stone taking net bag with the elastic adaptive function can be elastically deformed through the cooperation of the catheter, the end pipe, the ball bag, the spring ring, the metal wire, the guide wire pipe and the injection pipe outside the outer sheath pipe, so that the stone is not easy to leak out and the gallbladder wall is not easy to be expanded too much to cause damage, the gallbladder wall can be tightly attached when taking out, and the internal stone is prevented from leaking out through the limitation of the structure, and the stone taking structure has good stone taking capacity under the action of the elastic structure and does not apply hard pressure to the inner wall, so that the gallbladder wall is not expanded too much, thereby playing a certain protection role, and the injection of the contrast agent and the setting of the guide wire are facilitated, so that the convenience and efficiency of the operation are further improved, and the traditional gallbladder stone taking tool has obvious advantages. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the utility model Figure 1 It is a local enlarged schematic diagram of A part in the utility model structure;

[0020] Figure 3 It is a structural schematic diagram of the end pipe connecting structure in the utility model structure.

[0021] In the drawing: 100 outer sheath pipe, 101 first handle, 201 catheter, 202 end pipe, 203 ball bag, 204 spring ring, 205 metal wire, 206 guide groove, 207 second handle, 208 guide wire pipe, 209 injection pipe. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0023] Please refer to Figures 1 to 3 The utility model provides a technical scheme: a gallbladder stone taking net bag with elastic adaptive function, including the outer sheath pipe 100 that top and bottom are all set to open, the first handle 101 is fixed to the bottom of outer sheath pipe 100, and the stone taking assembly for elastic stone taking is installed to the outside of outer sheath pipe 100;

[0024] In the above embodiment, through the cooperation between the catheter 201, the end tube 202, the ball bag 203, the spring ring 204, the wire 205, the guide wire tube 208 and the injection tube 209 outside the outer sheath tube 100, elastic adaptive deformation can be performed, so that the stone leakage is not easy to occur and the bile duct wall is not easy to be expanded too much to cause damage, and the bile duct wall can be tightly attached during removal. Through the limitation of the structure, the internal stone leakage can be prevented, and under the action of the elastic structure, the stone removal structure has good stone removal capacity and does not apply hard pressure to the inner wall, so that the bile duct wall is not expanded too much, thereby playing a certain protection role. Moreover, the injection of contrast agent and the installation of guide wire are facilitated, so as to further improve the convenience and efficiency of the operation, and the traditional bile duct stone removal tool has obvious advantages.

[0025] The stone removal assembly in the embodiment is a structure for deepening into the bile duct to perform elastic stone removal work.

[0026] As shown in Figure 1 , Figure 2 and Figure 3 , the stone removal assembly comprises a catheter 201 fixed inside the outer sheath tube 100 and extending to the outside through the top end, an end tube 202 fixed outside the catheter 201, a ball bag 203 fixedly installed outside the catheter 201 near one side of the end tube 202, a spring ring 204 fixedly installed at the bottom of the ball bag 203, three wires 205 fixedly installed at the bottom of the spring ring 204 and uniformly distributed, three guide grooves 206 opened inside the outer sheath tube 100 and provided with openings at the top, a second handle 207 fixed between the bottom ends of the three wires 205, a guide wire tube 208 provided inside the outer sheath tube 100, and an injection tube 209 provided inside the outer sheath tube 100.

[0027] It should be noted that the inner side of the outer sheath tube 100 is fixedly installed with a support framework, which can support the outer sheath tube 100, and the length of the catheter 201 is much greater than the length of the outer sheath tube 100, so that the catheter 201 can normally penetrate into the inside of the bile duct.

[0028] Meanwhile, the ball bag 203 is a transparent film and has a circular truncated cone shape, the top opening of the ball bag 203 is fixedly connected to the outer side of the catheter 201, and the connection is sealed, the opening at the bottom of the ball bag 203 is larger than the diameter of the catheter 201, and the outer side of the catheter 201 is provided with an annular groove for inserting the spring ring 204, the spring ring 204 is in a contracted state in a natural state, and when the spring ring 204 is contracted, it can be inserted into the inner side of the annular groove, so that the gap between the bottom opening of the ball bag 203 and the catheter 201 is reduced, the possibility of falling out of the calculus is reduced, so that the calculus can enter the inside of the ball bag 203 through the opened bottom opening of the ball bag 203, and is not easy to fall out, and meanwhile, through the transparent setting, the contrast agent can be conveniently observed by the X-ray machine after covering the surface of the calculus and the operator can perform the calculus removal operation.

[0029] In addition, the three guide grooves 206 are uniformly distributed on the outer side of the catheter 201, and the three guide grooves 206 are respectively slidably connected with the three metal wires 205, so that the guide grooves 206 can guide the metal wires 205, and the ends of the three metal wires 205 close to the second handle 207 are twisted with each other and fixedly connected to the top of the second handle 207, so that the three metal wires 205 can form a metal wire after being twisted with each other, thereby facilitating the pushing or pulling of the second handle 207, wherein the metal wire 205 is a memory metal and has strong toughness.

[0030] In addition, the top of the first handle 101 is provided with a communication hole in communication with the inside of the outer sheath tube 100 and for the metal wire 205 to penetrate, and the top opening of the outer sheath tube 100 can normally expand and slide the three metal wires 205, specifically, the three metal wires 205 can expand at the opening of the outer sheath tube 100, the inner diameter of the outer sheath tube 100 can be adjusted according to the actual production condition, and it is necessary to ensure that the angle between the metal wire 205 at the top of the outer sheath tube 100 and the outer side of the catheter 201 is between forty-five degrees and sixty degrees, so that the top opening of the outer sheath tube 100 can normally pass the metal wire 205, and the metal wire 205 can effectively push the spring ring 204 to expand.

[0031] It should be further explained that one end of the guide wire tube 208 and the injection tube 209 penetrates the outer side of the outer sheath tube 100 and extends to the outside, and the other end of the guide wire tube 208 and the injection tube 209 penetrates the inside of the outer sheath tube 100, the inside of the catheter 201 and the inside of the end tube 202 in sequence and extends to the outside through the top end of the end tube 202, so that the guide wire can normally extend to the outside of the end of the end tube 202 through the guide wire tube 208, wherein the guide wire is a medical product, which is used in the process of interventional diagnosis and treatment as a guide and support, and can be observed by an X-ray machine or a CT scanner, and the contrast agent can be injected into the bile duct through the injection tube 209.

[0032] The working principle of the above embodiment is as follows:

[0033] When performing the gallbladder stone removal operation, the guide wire is arranged in the inside of the guide wire tube 208, and the end thereof is extended to the outside through the top end of the end tube 202, the end tube 202 is arranged in the gallbladder together with the ball bag 203 and the catheter 201, the position of the end tube 202 can be positioned by the X-ray machine through the guide wire, so that the stone removal position can be preliminarily judged, after reaching the stone removal site, the contrast agent is injected in the inside of the injection tube 209, and flows through the inside of the injection tube 209 and is discharged through the top end of the end tube 202, so that the part covered by the contrast agent can be viewed by the X-ray machine, the second handle 207 is pushed towards the side close to the end tube 202, so that the metal wire 205 slides in the inside of the corresponding guide groove 206, and the spring ring 204 is pushed to be unfolded, at this time, the side of the ball bag 203 close to the outer sheath tube 100 is arranged in an open manner, the first handle 101 is pulled, and the second handle 207 is synchronously moved, so that the stone is received in the inside of the ball bag 203, the pushing force applied to the second handle 207 is released, and then the opening of the ball bag 203 is closed under the elastic recovery of the spring ring 204, so that the stone can be fully and effectively received in the inside of the ball bag 203, the catheter 201 and the ball bag 203 are pulled out, and the stone removal operation is completed.

[0034] Compared with the prior art, the gallbladder stone removal net bag with elastic adaptive function can be elastically deformed through the cooperation of the catheter 201, the end tube 202, the ball bag 203, the spring ring 204, the metal wire 205, the guide wire tube 208 and the injection tube 209 outside the outer sheath tube 100, so as to simultaneously have the characteristics of not easily causing the stone to leak out and not easily causing damage to the inner wall of the gallbladder due to excessive expansion, can tightly adhere to the inner wall of the gallbladder when being taken out, and can prevent the internal stone from leaking out through the limitation of the structure, and under the action of the elastic structure, the stone removal structure has good stone removal capacity without applying hard pressure to the inner wall, so that the inner wall of the gallbladder is not expanded too much, thereby playing a certain protection role, and the injection of the contrast agent and the arrangement of the guide wire are facilitated, so as to further improve the convenience and efficiency of the operation, and the traditional gallbladder stone removal tool has obvious advantages, and solves the problem that the existing gallbladder stone removal tool cannot simultaneously meet the two characteristics of effective stone removal and not easy to damage the inner wall of the gallbladder.

[0035] It is to be understood that the terms "including", "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 can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises a... " does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0036] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application.

Claims

1. A gallstone-removing net bag with elastic adaptation function, comprising an outer sheath tube (100) with open top end and bottom end, characterized in that: The bottom end of the outer sheath (100) is fixed with a first handle (101), and a stone-retrieving component for elastic stone retrieval is installed on the outside of the outer sheath (100). The stone retrieval assembly includes a catheter (201) fixed inside the outer sheath (100) and extending to the outside through its top end; an end tube (202) fixed outside the catheter (201); a ball bag (203) fixedly installed on the outside of the catheter (201) near the end tube (202); a spring ring (204) fixed to the bottom of the ball bag (203); three metal wires (205) fixedly installed at the bottom of the spring ring (204) and evenly distributed; three guide grooves (206) opened inside the outer sheath (100) and with open tops; a second handle (207) fixed between the bottom ends of the three metal wires (205); a guide wire tube (208) passing through the inner side of the outer sheath (100); and an injection tube (209) passing through the inner side of the outer sheath (100).

2. The bile duct stone removal net with elastic adaptability according to claim 1, characterized in that: A support frame is fixedly installed on the inner side of the outer sheath (100), and the length of the catheter (201) is much greater than the length of the outer sheath (100).

3. The bile duct stone removal net with elastic adaptability according to claim 1, characterized in that: The ball bag (203) is a transparent film and has a frustum shape. The top opening of the ball bag (203) is fixedly connected to the outside of the conduit (201).

4. The bile duct stone removal net with elastic adaptability according to claim 1, characterized in that: The opening at the bottom of the ball bag (203) is larger than the diameter of the conduit (201), and an annular groove for inserting the spring coil (204) is provided on the outer side of the conduit (201).

5. The bile duct stone removal net with elastic adaptability according to claim 1, characterized in that: The three guide grooves (206) are evenly distributed on the outside of the conduit (201), and the three guide grooves (206) are respectively slidably connected to the three metal wires (205). The three metal wires (205) are intertwined at one end near the second handle (207) and fixedly connected to the top of the second handle (207).

6. The bile duct stone removal net with elastic adaptability according to claim 1, characterized in that: The top of the first handle (101) has a connecting hole that communicates with the inside of the outer sheath (100) and allows the metal wires (205) to pass through. The top opening of the outer sheath (100) allows the three metal wires (205) to open and slide normally.

7. The bile duct stone removal net with elastic adaptability according to claim 1, characterized in that: One end of the guidewire (208) and the injection tube (209) both penetrate the outside of the outer sheath (100) and extend into the outside. The other ends of the guidewire (208) and the injection tube (209) both penetrate the inside of the outer sheath (100), the inside of the catheter (201), and the inside of the end tube (202) in sequence, and extend through the top of the end tube (202) into the outside.

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