CN216168129U

CN216168129U - Bile duct and pancreatic duct stent extractor with barbs and capable of guiding wires

Info

Publication number: CN216168129U
Application number: CN202122501458.3U
Authority: CN
Inventors: 张静; 杨国栋; 叶连松
Original assignee: Affiliated Hospital of North Sichuan Medical College
Current assignee: Affiliated Hospital of North Sichuan Medical College
Priority date: 2021-10-18
Filing date: 2021-10-18
Publication date: 2022-04-05
Anticipated expiration: 2031-10-18

Abstract

The utility model discloses a bile duct, pancreatic duct support extractor of taking barb of accessible seal wire, including the core bar, its characterized in that: the outer wall of core bar is provided with gag lever post and slider bracelet, the gag lever post is located the upper end of slider bracelet. The bile duct and pancreatic duct support extractor with the barbs and capable of passing through the guide wire can enter a support cavity, the barbs are opened to pull out the support, the support is taken out from a clamping path, a thicker support still can pass through the clamping path, and the support is broken or even an endoscopic clamping path is damaged due to the fact that the support is folded when a snare and a foreign matter clamp which are generally used clinically at present are used for taking the thicker support; at present do not have the support extractor that can take the seal wire clinically, this practicality takes out the support back seal wire still remain to in bile duct, the pancreas pipe, reduces intubate failure rate once more, reduces the serious complication that the intubate leads to repeatedly, if perforation, hemorrhage, infection, postoperative pancreatitis etc. bring better use prospect.

Description

Bile duct and pancreatic duct stent extractor with barbs and capable of guiding wires

Technical Field

The utility model relates to the field of medical equipment, in particular to bile duct and pancreatic duct stent extractor with barbs and capable of guiding wires.

Background

Because of its micro-invasive, relatively safe and effective, ERCP is an important surgical means for curing diseases of the biliary-pancreatic system at present, and the implantation of bile duct and pancreatic duct stents is widely used. Bile duct stents are required to be arranged after repeated cholangitis, liver transplantation, benign biliary stricture caused by benign occupation of the biliary duct or malignant biliary obstruction caused by bile duct cancer, pancreatic cancer and liver cancer compression or metastasis, and most patients need to replace the stents repeatedly to further improve the biliary obstruction and stricture.

Chronic pancreatitis, pancreatic division, pancreatic duct stenosis, pseudocyst of pancreas, etc. require the placement of ERCP descending pancreatic duct stents, and most patients still need to replace the pancreatic duct stents repeatedly. The pancreatic duct bracket is arranged, so that the pancreatic duct obstruction can be effectively improved, the pancreatic duct pressure can be reduced, and the incidence rate of post-operation pancreatitis can be reduced.

In the selection of the stent, the plastic stent is selected for most benign stricture clinic, the stent is pulled out after the benign stricture is expanded for 3-4 months, the ERCP is rechecked, and the stent needs to be placed into the stent again for gradual expansion when necessary. Malignant stenosis, without definitive pathological consequences, is still preferably a plastic stent, which is reviewed after 3-4 months and gradually expanded if necessary by replacement of the stent. The bile duct and pancreatic duct stent extractor with barbs is provided for solving the problems that the bile duct and pancreatic duct are difficult to intubate after a stent is pulled out due to the fact that the stent is placed in the papilla for a long time and edema exists around the papilla of some patients, and particularly, the guide wire cannot enter the biliary duct and the pancreatic duct due to infiltration and metastasis of malignant tumors, so that operation failure is caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a bile duct, pancreatic duct support extractor of taking barb of accessible seal wire, can effectively solve the problem among the background art.

In order to realize the purpose, the technical scheme adopted by the utility model is as follows:

the utility model provides a bile duct, pancreatic duct support extractor of taking barb of accessible seal wire, includes the core bar, its characterized in that: the outer wall of core bar is provided with gag lever post and slider bracelet, the gag lever post is located the upper end of slider bracelet, the lower extreme surface of core bar is provided with outer sheath pipe, one side surface of outer sheath pipe is provided with the seal wire inlet tube, the inner wall of outer sheath pipe is provided with the cable, the one end surface of cable is provided with the barb.

Preferably, the inner wall of gag lever post and the outer wall fixed connection of core bar, the inner wall of slider bracelet and the outer wall sliding connection of core bar.

Preferably, the outer surface of the lower end of the core rod is fixedly connected with the outer surface of the upper end of the outer sheath tube, and the inhaul cable is hollow.

Preferably, the guide wire inlet pipe is communicated with the hollow cavity of the inhaul cable.

Preferably, the pull cord controls the opening of the barbs.

Compared with the prior art, this practicality has following beneficial effect: the bile duct and pancreatic duct support extractor with the barbs and capable of passing through the guide wire can enter a support cavity, the barbs are opened to pull out the support, the support is taken out from a clamping channel, a thicker support still can pass through the clamping channel, and a snare and a foreign object clamp which are generally used clinically at present break the support due to the fact that the support is broken when the thicker support is taken out, and the pressure is too high when the thicker support passes through the clamping channel, and even damage the endoscopic clamping channel; at present do not have the support extractor that can take the seal wire clinically, this practicality takes out behind the support the seal wire still remain to bile duct, pancreatic duct in, reduce intubate failure rate once more, reduce the serious complication that the intubate leads to repeatedly, like perforation, hemorrhage, infection, postoperative pancreatitis etc. bile duct, pancreatic duct support extractor simple structure of taking the barb of a whole accessible seal wire, convenient operation, the effect of using is better for traditional mode.

Drawings

Fig. 1 is a schematic view of the whole structure of a bile duct/pancreatic duct stent extractor with barbs, which can pass through a guide wire according to the present invention.

Fig. 2 is an enlarged view of the pull rope 3 of fig. 1 of the barbed bile duct/pancreatic duct stent extractor which can pass through a guide wire according to the present invention.

Fig. 3 is an internal view of the outer sheath tube 2 in fig. 1 of the bile duct/pancreatic duct stent extractor with barbs capable of passing through the guide wire according to the present invention.

Fig. 4 is an enlarged view of the core rod 5 in fig. 1 of the bile duct/pancreatic duct stent extractor with barbs for passing through a guide wire according to the present invention.

In the figure: 1. a slider bracelet; 2. an outer sheath tube; 3. a cable; 4. a guidewire inlet tube; 5. a core bar; 6. A limiting rod; 7. and barbs.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described below by combining with the specific embodiments.

In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be configured in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those skilled in the art.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by persons skilled in the art based on the embodiments in the present application without any creative work belong to the protection scope of the present application.

1-4, a bile duct and pancreatic duct stent extractor with barbs and capable of passing through a guide wire comprises a core rod 5, and is characterized in that: the outer wall of core bar 5 is provided with gag lever post 6 and slider bracelet 1, and gag lever post 6 is located the upper end of slider bracelet 1, and the lower extreme surface of core bar 5 is provided with outer sheath pipe 2, and one side surface of outer sheath pipe 2 is provided with seal wire inlet tube 4, and the inner wall of outer sheath pipe 2 is provided with cable 3, and the one end surface of cable 3 is provided with barb 7.

Further, the inner wall of gag lever post 6 and the outer wall fixed connection of core bar 5, the inner wall of slider bracelet 1 and the outer wall sliding connection of core bar 5.

Furthermore, the outer surface of the lower end of the core rod 5 is fixedly connected with the outer surface of the upper end of the outer sheath tube 2, and the inhaul cable 3 is hollow.

Further, the guide wire inlet pipe 4 is communicated with the hollow cavity of the inhaul cable 3.

Further, the pull cord 3 may control the opening of the barb 7.

The utility model relates to a bile duct and pancreatic duct bracket extractor with barbs, which can pass through a guide wire, when in use, the guide wire is inserted into the bile duct and pancreatic duct bracket cavity to be extracted and enters the bile duct and pancreatic duct bracket cavity through the bracket extractor, the guide wire enters the bracket to be extracted and then releases the barbs, the barbs in the bracket extractor clamp the bracket, the bracket can be extracted from a forceps channel, related instruments to be further examined and treated can be completed through the guide wire, the bracket extractor can enter the bracket cavity, a thicker bracket can still pass through the forceps channel, and a snare and a foreign object forceps which are generally used clinically at present can be broken due to the bracket when the thicker bracket is extracted, so that the bracket is broken due to too large pressure in the forceps channel when passing through the forceps channel, and even the endoscopic forceps channel is damaged; at present do not have the support extractor that can take the seal wire clinically, this practicality still remains to in bile duct, the pancreas pipe after taking out the support, reduces intubate failure rate once more, reduces the serious complication that the intubate leads to repeatedly, like perforation, hemorrhage, infection, postoperative pancreatitis etc. comparatively practical.

The foregoing shows and describes the general principles and features of the present invention and its advantages. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to illustrate the principles of the invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claims. The scope of the present invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a bile duct, pancreatic duct support extractor of taking barb of accessible seal wire, includes core bar (5), its characterized in that: the outer wall of core bar (5) is provided with gag lever post (6) and slider bracelet (1), gag lever post (6) are located the upper end of slider bracelet (1), the lower extreme surface of core bar (5) is provided with outer sheath pipe (2), one side surface of outer sheath pipe (2) is provided with seal wire inlet tube (4), the inner wall of outer sheath pipe (2) is provided with cable (3), the one end surface of cable (3) is provided with barb (7).

2. The bile duct, pancreatic duct stent extractor with barbs and capable of passing through a guide wire according to claim 1, wherein: the inner wall of gag lever post (6) and the outer wall fixed connection of core bar (5), the inner wall of slider bracelet (1) and the outer wall sliding connection of core bar (5).

3. The bile duct, pancreatic duct stent extractor with barbs and capable of passing through a guide wire according to claim 1, wherein: the outer surface of the lower end of the core rod (5) is fixedly connected with the outer surface of the upper end of the outer sheath tube (2), and the inhaul cable (3) is hollow.

4. The bile duct, pancreatic duct stent extractor with barbs and capable of passing through a guide wire according to claim 1, wherein: the guide wire inlet pipe (4) is communicated with the hollow cavity of the inhaul cable (3).

5. The bile duct, pancreatic duct stent extractor with barbs and capable of passing through a guide wire according to claim 1, wherein: the pull rope (3) can control the opening of the barb (7).