CN212466256U - Retrievable biliary stent - Google Patents

Abstract

Translated fromChinese

可回收胆道支架，包括覆膜支架和组合引流管，覆膜支架的前端为多孔引流头，多孔引流头上设置多个引流孔，覆膜支架内设置有引流通道和粒子通道；综上所述，本实用新型通过分体结构可以实现近端和远端插入方便，前端的多个引流孔可以方便引流，减小堵塞可能，在覆膜支架堵塞时可以通过十二指肠镜经十二指肠乳头夹持盘管部将本装置拉出，因为覆膜支架的支撑塑性作用，在需要放置胆道支架管时可以通过十二指肠镜重新插入新的胆道支架管，可以回收，方便重新插入，更换方便。

The recyclable biliary stent includes a covered stent and a combined drainage tube, the front end of the covered stent is a porous drainage head, a plurality of drainage holes are arranged on the porous drainage head, and a drainage channel and a particle channel are arranged in the covered stent; The utility model can realize the convenient insertion of the proximal end and the distal end through the split structure, and the multiple drainage holes at the front end can facilitate drainage and reduce the possibility of blockage. The intestinal papilla clamps the coil part to pull out the device. Because of the supporting plastic effect of the covered stent, when the biliary stent needs to be placed, a new biliary stent can be re-inserted through the duodenoscope, which can be recovered and is convenient for re-insertion , easy to replace.

Description

Recoverable biliary tract stent

Technical Field

The utility model belongs to the technical field of the medical treatment, concretely relates to recoverable biliary tract support.

Background

The liver is an important digestive organ of a human body, and the hepatic portal part has important pipeline structures such as hepatic artery, portal vein, common bile duct and the like. Biliary tract cancer at the hepatic portal part is a common malignant tumor of the biliary tract system, and great difficulty is caused to surgical resection due to the characteristics of special occurrence part, invasive growth, close relation with hepatic portal blood vessels and the like. The hepatic portal cholangiocarcinoma often causes obstructive jaundice such as fever, pruritus and jaundice of patients, and the life health of the patients can be endangered when the symptoms are serious. When the biliary cancer at the hepatic valve part is difficult to radically resect, the symptom of jaundice of a patient needs to be solved, a biliary stent is often placed at present or the biliary drainage is performed through percutaneous liver puncture, the percutaneous liver puncture biliary drainage is an operation method for bile external drainage, a biliary drainage tube is placed on the abdominal wall after a patient operation, the operation needs to be nursed, inconvenience is brought to the life of the patient, and electrolyte disorder and digestive function decline of the patient are easily caused by a large amount of outflow bile. The biliary tract stent in the prior art mostly plays a role in draining bile in a liver to a duodenal cavity through the biliary tract stent, a radioactive treatment effect is lacked for local tumors, and cholestasis of part of patients possibly causes blockage of the biliary tract stent.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve the weak point among the prior art, provide a recoverable biliary tract support, use this biliary tract support to carry out radiation therapy to local tumour, reduce biliary tract support and block up the risk.

In order to solve the technical problem, the utility model adopts the following technical scheme: the recyclable biliary tract stent comprises a covered stent and a combined drainage tube, wherein the front end of the covered stent is provided with a porous drainage head, a plurality of drainage holes are formed in the porous drainage head, a drainage channel and a particle channel are arranged in the covered stent, the porous drainage head is communicated with the drainage channel, anti-skid lines are arranged on the outer surface of the covered stent, and external threads are arranged at the rear end of the covered stent;

the pipe wall of the combined drainage pipe is provided with scale marks, the combined drainage pipe is composed of a hard pipe part, a soft pipe part and a coil pipe part, the hard pipe part is provided with internal threads, and the coil pipe part is provided with a plurality of drainage holes.

The length of the porous drainage head is 2-4cm, the length of the covered stent is 4-6cm, the length of the hard tube part is 2-5cm, the length of the soft tube part is 3-7cm, and the length of the coil part is 1-2 cm.

Adopt above-mentioned technical scheme, the utility model discloses following beneficial effect has: the utility model can realize the convenient insertion of the near end and the far end through the split structure, the drainage holes at the front end can facilitate the drainage, the possibility of blockage is reduced, the device can be pulled out through the duodenoscope through the duodenal papilla clamping coil pipe part when the covered stent is blocked, and because of the supporting plasticity effect of the covered stent, a new biliary tract stent pipe can be inserted again through the duodenoscope when the biliary tract stent pipe needs to be placed, and the biliary tract stent pipe can be recovered, is convenient to be inserted again and is convenient to be replaced; the utility model discloses a can place radioactive particle in the particle passageway, carry out the local radiation effect, can kill and kill the treatment to local tumour.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a cross-sectional view of a stent graft;

fig. 3 is a block diagram of a catheter and guidewire.

Detailed Description

As shown in fig. 1-3, the utility model discloses a recoverable biliary tract stent, including a covered stent 1 and a combined drainage tube, the front end of the covered stent 1 is a porous drainage head 2, the porous drainage head 2 is provided with a plurality of drainage holes, adrainage channel 3 and aparticle channel 4 are arranged in the covered stent 1, the porous drainage head 2 is communicated with thedrainage channel 3, the outer surface of the covered stent 1 is provided with anti-skid lines 5, and the rear end of the covered stent 1 is provided with external threads 5;

the wall of the combined drainage tube is provided withscale marks 6, the combined drainage tube is composed of a hard tube part 7, asoft tube part 8 and acoil pipe part 9, the hard tube part 7 is provided with internal threads, and thecoil pipe part 9 is provided with a plurality of drainage holes.

The length of the porous drainage head 2 is 2-4cm, the length of the covered stent 1 is 4-6cm, the length of the hard tube part 7 is 2-5cm, the length of thesoft tube part 8 is 3-7cm, and the length of thecoil part 9 is 1-2 cm.

The utility model is a split structure, the upper part is a covered stent 1, when in use, aguide wire 10 is inserted into acatheter 11, then the position of the biliary tract to be placed is roughly determined according to the auxiliary examination before the operation (such as CT, B-ultrasound, magnetic resonance and the like), then a common bile duct is cut along a long axis and is inserted into the liver in a retrograde direction through the common bile duct, the intrahepatic bile duct and the common bile duct are continuous pipelines, theguide wire 10 is pulled out after entering the bile duct in the liver, if bile flows out from thecatheter 11, the correct position is proved to be placed, then thecatheter 11 is used as a guide, adrainage channel 3 of a peritoneal stent is inserted into the outside of thecatheter 11 from the outside of thecatheter 11 and is continuously pushed to the liver direction, the peritoneal stent is placed into the intrahepatic bile duct, after bile flows out from thedrainage channel 3 of the covered stent 1, the peritoneal stent is placed into the planned intrahepatic bile duct, then radioactive particles are placed into acorresponding particle channel 4 according to the position of the tumor of the, thecut guide wire 10 is inserted into a part where the particles are not required to be put in to block the particle cavity, so that the particles are prevented from moving;

then, aguide wire 10 is inserted into the hard tube part 7 and thesoft tube part 8 at the distal end, thecoiled tube part 9 at the front end is inserted into the duodenal cavity through the duodenal papilla part from the incision of the common bile duct, then the overlong hard tube part 7 is subtracted according to the length of the hard tube part 7 at the distal end and the length of the peritoneal stent at the proximal end, then the peritoneal stent is screwed with the hard tube part 7, and the device is placed into the common bile duct for suturing.

The present embodiment is not intended to limit the shape, material, structure, etc. of the present invention in any form, and all of the technical matters of the present invention belong to the protection scope of the present invention to any simple modification, equivalent change and modification made by the above embodiments.

Claims (2)

Translated fromChinese

1.可回收胆道支架，其特征在于：包括覆膜支架和组合引流管，覆膜支架的前端为多孔引流头，多孔引流头上设置多个引流孔，覆膜支架内设置有引流通道和粒子通道，多孔引流头与引流通道相连通，覆膜支架外表面设置有防滑纹，覆膜支架的后端设置有外螺纹；1. a recyclable bile duct stent is characterized in that: comprising a covered stent and a combined drainage tube, the front end of the covered stent is a porous drainage head, a plurality of drainage holes are provided on the porous drainage head, and a drainage channel and particles are provided in the covered stent channel, the porous drainage head is communicated with the drainage channel, the outer surface of the film-covered stent is provided with anti-skid lines, and the rear end of the film-covered stent is provided with external threads;组合引流管的管壁上设置有刻度线，组合引流管由硬管部、软管部和盘管部组成，硬管部设置有内螺纹，盘管部设置有多个引流孔。A scale line is arranged on the pipe wall of the combined drainage pipe. The combined drainage pipe is composed of a hard pipe part, a flexible pipe part and a coil pipe part. The hard pipe part is provided with internal threads, and the coil pipe part is provided with a plurality of drainage holes.2.根据权利要求1所述的可回收胆道支架，其特征在于：多孔引流头的长度为2-4cm，覆膜支架的长度为4-6cm，硬管部的长度为2-5cm，软管部的长度为3-7cm，盘管部的长度为1-2cm。2. The recyclable bile duct stent according to claim 1 is characterized in that: the length of the porous drainage head is 2-4cm, the length of the covered stent is 4-6cm, the length of the rigid tube portion is 2-5cm, and the length of the flexible tube is 2-5cm. The length of the section is 3-7cm, and the length of the coil section is 1-2cm.

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