CN212466256U

CN212466256U - Recoverable biliary tract stent

Info

Publication number: CN212466256U
Application number: CN202021095479.9U
Authority: CN
Inventors: 李晓勇; 陈亚斌; 胡水全; 陈艳军; 陈升阳; 程冰冰
Original assignee: Fifth Affiliated Hospital of Zhengzhou University
Current assignee: Fifth Affiliated Hospital of Zhengzhou University
Priority date: 2020-06-15
Filing date: 2020-06-15
Publication date: 2021-02-05
Anticipated expiration: 2030-06-15

Abstract

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, and a drainage channel and a particle channel are arranged in the covered stent; to sum up, the utility model discloses a components of a whole that can function independently structure can realize that near-end and distal end insert the convenience, and a plurality of drainage holes of front end can make things convenient for the drainage, reduce to block up probably, can pull out this device through duodenoscope through duodenum nipple centre gripping coil pipe portion when tectorial membrane support blocks up, because tectorial membrane support's support plastic effect can insert new biliary tract support pipe through duodenoscope again when biliary tract support pipe is placed to needs, can retrieve, conveniently reinserts, and it is convenient to change.

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, a drainage channel 3 and a particle channel 4 are arranged in the covered stent 1, the porous drainage head 2 is communicated with the drainage 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 with scale marks 6, the combined drainage tube is composed of a hard tube part 7, a soft tube part 8 and a coil pipe part 9, the hard tube part 7 is provided with internal threads, and the coil 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 the soft tube part 8 is 3-7cm, and the length of the coil part 9 is 1-2 cm.

The utility model is a split structure, the upper part is a covered stent 1, when in use, a guide wire 10 is inserted into a catheter 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, the guide wire 10 is pulled out after entering the bile duct in the liver, if bile flows out from the catheter 11, the correct position is proved to be placed, then the catheter 11 is used as a guide, a drainage channel 3 of a peritoneal stent is inserted into the outside of the catheter 11 from the outside of the catheter 11 and is continuously pushed to the liver direction, the peritoneal stent is placed into the intrahepatic bile duct, after bile flows out from the drainage channel 3 of the covered stent 1, the peritoneal stent is placed into the planned intrahepatic bile duct, then radioactive particles are placed into a corresponding particle channel 4 according to the position of the tumor of the, the cut 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, a guide wire 10 is inserted into the hard tube part 7 and the soft tube part 8 at the distal end, the coiled 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

1. Recoverable biliary tract support, its characterized in that: the drainage device 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 grains are arranged on the outer surface of the covered stent, and external threads are arranged at the rear end of the covered stent;

2. The retrievable biliary stent of claim 1, wherein: 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.