Suspension-type regurgitation-resistant biliary stent

A hanging, biliary technology, applied in the field of medical devices, can solve problems such as easy blockage of biliary stents, and achieve the effects of alleviating human discomfort, facilitating insertion, and improving practicability

Pending Publication Date: 2018-08-28
PEKING UNIV THIRD HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the above-mentioned defects in the prior art, the purpose of the present invention is to provide a hanging anti-reflux biliary stent to solve the problem that the biliary stent in the prior art is easy to block

Method used

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  • Suspension-type regurgitation-resistant biliary stent
  • Suspension-type regurgitation-resistant biliary stent
  • Suspension-type regurgitation-resistant biliary stent

Examples

Experimental program
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Effect test

Embodiment 1

[0041] figure 2 A schematic diagram of the structure of the hanging anti-reflux biliary stent provided by an embodiment of the present invention; please refer to figure 2 . This embodiment provides a hanging anti-reflux biliary stent, including a bile duct part 1 for setting inside the common bile duct and an intestinal part 2 for setting in the duodenum, the total length of the biliary stent is less than or equal to 25 cm, Wherein, the length of the bile duct 1 is greater than or equal to 10 cm, the length of the intestinal tract 2 is greater than or equal to 13 cm, the bile duct 1 includes a connecting portion 11 and a first connecting section 12, and the intestinal tract 2 includes a bending portion 21 and a second connecting section 22, wherein , the first continuous bending portion 21 is located between the first connecting section 12 and the second connecting section 22, so that the first connecting section 12 and the second connecting section 22 form a predetermined ...

Embodiment 2

[0059] Figure 4 A schematic structural diagram of a suspended anti-reflux biliary stent provided in another embodiment of the present invention; please refer to Figure 4 . This embodiment provides a hanging anti-reflux biliary stent, including a bile duct part 4 for setting inside the common bile duct and an intestinal part 5 for setting in the duodenum. The specific shapes and structures of the bile duct part 4 and the intestinal tract part 5 in this embodiment are all the same as those described in the first embodiment above, only for the convenience of hanging the biliary tract stent of this embodiment in the right bile duct. The bending direction of the part 4 relative to the intestinal part 5 is opposite to that in the first embodiment.

[0060]The hanging anti-reflux biliary stent provided in this embodiment overcomes the problem of easy blockage of the stent in the prior art, and improves the practicability of the biliary stent; in addition, the biliary stent of thi...

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Abstract

The invention provides a suspension-type regurgitation-resistant biliary stent. The stent comprises a biliary duct part for being arranged in the common bile duct and an intestinal part for being arranged in the duodenum, the total length of the biliary stent is smaller than or equal to 25 cm, the length of the biliary duct part is larger than or equal to 10 cm, and the length of the intestinal part is larger than or equal to 13 cm. The biliary stent is placed in the human body and more easily accepted by a patient, complications such as perforation are not easily caused, and when the intestinal part is placed in the duodenum and can reach the horizontal part in the duodenum, the countercurrent condition of content in the duodenum is effectively reduced; in addition, a bending part is located between a first connection segment and a second connection segment, so that a preset angle is formed between the first connection segment and the second connection segment, in this way, the intestinal part can better adapt to deformation of the enteric cavity, the biliary stent is conveniently placed and prevented from being in contact with the intestinal mucosa, and the discomfort of the human body after the stent is placed in the human body is relieved.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a hanging anti-reflux biliary stent. Background technique [0002] The biliary system has the functions of secreting, storing, concentrating and transporting bile, and plays an important role in regulating the discharge of bile into the duodenum. Malignant biliary obstruction caused by malignant tumors such as cholangiocarcinoma, liver cancer, pancreatic cancer, and metastatic cancer has a high incidence and is often discovered at an advanced stage. Liver transplantation has become the most effective way to treat end-stage liver disease, but the incidence of postoperative biliary complications is still high, according to statistics, 10% to 30%, which is one of the important factors affecting the long-term survival of patients after surgery. Implanting biliary stents into stenotic or obstructed parts is currently a better way to treat biliary obstruction. Especially in co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/82A61M27/00
CPCA61M27/002A61F2/82A61F2230/0013A61F2230/0091
Inventor 黄永辉闫秀娥常虹
Owner PEKING UNIV THIRD HOSPITAL
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