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Duodenum stent and duodenum stent implantation device

A duodenum and implanter technology, applied in the field of medical devices, can solve the problems of displacement, troublesome stent removal, easy insertion of human tissue, etc., and achieve the effect of convenient implantation operation and good superelasticity

Inactive Publication Date: 2017-05-17
刘建强 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the traditional stent is implanted in the duodenum, there may be a problem of displacement, and human tissue is easily embedded in the stent, which will bring trouble to the removal of the stent in the future

Method used

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  • Duodenum stent and duodenum stent implantation device
  • Duodenum stent and duodenum stent implantation device
  • Duodenum stent and duodenum stent implantation device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Such as figure 1 , 2 , shown in 3: a duodenal stent, which includes a tubular mesh stent 1 and an annular airbag 2 located at the end of the mesh stent 1; the outer diameter of the annular airbag 2 is greater than that at the end of the mesh stent 1 The outer diameter of the head; the annular airbag 2 is provided with a gas injection port with a sealing structure.

[0030] Before the duodenal stent is implanted in the intestinal tract, the annular air bag 2 is in an uninflated state, so the setting of the annular air bag 2 will not affect the implantation of the entire duodenal stent. The setting of the annular airbag 2 is equivalent to increasing the outer diameter of the end of the mesh stent 1, so that the entire duodenal stent can be stably hung on the connection between the duodenum and the gastric pyloric tube, avoiding damage caused by intestinal peristalsis. Displacement or detachment occurs.

[0031] The duodenal stent also includes a membrane 3 covering the...

Embodiment 2

[0047] Embodiment 2: The structure of Embodiment 2 of the present invention is generally similar to that of Embodiment 1, and the main difference is that: as Figure 7-10 Shown: the sealing structure is a sealing plug 9 made of rubber.

[0048] When the duodenal stent of Example 2 is in use, the injection needle of the syringe is inserted into the sealing plug 9 to inflate the annular airbag 2, and the syringe is removed when the annular airbag 2 is inflated. Because the sealing plug 9 is made of rubber, the needle hole inserted by the injection needle will not cause air leakage in the annular air bag 2 .

[0049]The annular airbag 2 of the present invention also can not be provided with an air injection port, and the chemical substance that can generate gas under a body temperature environment can be housed in the annular airbag 2, so that the annular airbag 2 can expand naturally without being inflated by the outside world.

[0050] The duodenal stent described in the prese...

Embodiment 3

[0051] Embodiment three: as Figure 11-13 Shown: a duodenal stent implanter, which includes a core tube 10, a middle tube 11 and an outer tube 12 that are sheathed from inside to outside and can slide relatively; the distal end of the outer tube 12 is provided with Edged notch 16 . The notch 16 can be used to cut off the gas injection pipe 7 .

[0052] The distal end of the core tube 10 is connected with a bracket limit cap 13 located on the outer side of the outer tube 12; the proximal end of the outer tube 12 is provided with a front handle 14; the proximal end of the middle tube 11 is provided with a rear handle 15 .

[0053] Such as Figure 12 As shown: the duodenal stent is accommodated in the duodenal stent implanter, the duodenal stent is sleeved outside the core tube 10 and is limited in the outer tube 12, and the duodenal stent The anal end is constrained by the stent-limiting cap 13 , and the mouth end of the duodenal stent is in contact with the distal end of th...

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Abstract

The invention relates to the field of medical instruments, in particular to a duodenum stent and a duodenum stent implantation device. The duodenum stent comprises a tubular mesh support and an annular air bag arranged at the tip of the mesh support; the peripheral diameter of the annular air bag is larger than the outer diameter of the tip of the mesh support; the annular air bag is provided with a gas injection port with a sealing structure. The duodenum stent implantation device comprises a core tube, a central tube and an outer tube which sequentially sleeve one another and can slide relative to one another, wherein the far end of the outer tube is provided with an edged notch. The duodenum stent has the advantages that the whole duodenum stent can be stably hung at the connecting part of the duodenum and the gastric pyloric canal by the annular air bag, and displacement or falling off of the duodenum stent along with duodenum peristalsis can be prevented; a coating film can effectively prevent human tissue from being embedded into the mesh support, and the taking out of the duodenum stent in the future is facilitated.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to a duodenal stent and a duodenal stent inserter. Background technique [0002] A common method for treating duodenal stricture obstruction and anastomotic stricture is to place a stent at the narrowed part of the intestine to stretch the intestine, so as to restore the patency of the narrowed or blocked part of the intestine. After the traditional stent is implanted in the duodenum, there may be a problem of displacement, and human tissue is easily embedded in the stent, which will bring trouble to the removal of the stent in the future. Contents of the invention [0003] One of the objectives of the present invention is to provide a duodenal stent with a simple structure and not easily displaced. [0004] One of the objects of the present invention is to provide a duodenal stent inserter with simple structure and convenient operation. [0005] The purpose of the present inv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/04A61F2/958A61F2/97
CPCA61F2/04A61F2/958A61F2/97A61F2002/045
Inventor 刘建强王雯
Owner 刘建强
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