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Sectional type esophageal stent and weaving method thereof

A segmented, esophageal technology, applied in the field of medical equipment, can solve the problems of poor overall rigidity and easy shortening of the esophageal stent in the axial direction, and achieve the effects of ensuring normal use, improving rigidity, and reducing axial compression deformation

Pending Publication Date: 2018-11-09
SHANGHAI ELITEK BIOSCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems that the existing esophageal stent is easily shortened in the axial direction and the overall rigidity is poor due to the braiding of multiple silk threads.

Method used

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  • Sectional type esophageal stent and weaving method thereof
  • Sectional type esophageal stent and weaving method thereof
  • Sectional type esophageal stent and weaving method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Such as figure 1 As shown, this embodiment provides a segmented esophageal stent, which is a cylindrical mesh stent braided by a monofilament with bell mouths at both ends, and the mesh stent consists of an upper bell mouth section and a The lower bell mouth section is composed of two sections, and the upper bell mouth section and the lower bell mouth section are connected by several locking structures.

[0035] The segmented esophageal stent in this embodiment is composed of two sections, the upper bell-mouth section and the lower bell-mouth section. That is to say, both ends of the esophageal stent are bell-shaped. , the upper bell mouth is good for food to pass through, the lower bell mouth can prevent the bracket from shifting, play a good role in fixing the bracket, and make it accurately fixed; the whole braiding process of the bracket is completed with only one silk thread, which improves The rigidity of the esophageal stent is improved, and the axial compressio...

Embodiment 2

[0037] On the basis of Example 1, compared with the existing hook-type lock, the lock structure in this embodiment is formed by overlapping and crossing monofilaments at the junction of the end of the upper bell mouth section and the end of the lower bell mouth section Cruciform structure.

[0038] The cross-shaped locking structure of the present invention can enhance the supporting force of the entire esophageal stent and has better rigidity. The braiding process of the whole stent is completed with only one silk thread, which not only improves the rigidity of the esophageal stent, but also reduces the axial compression deformation of the esophageal stent, ensuring the normal use of the esophageal stent.

Embodiment 3

[0040] On the basis of Example 2, in order to ensure the stable shape of the entire esophageal stent and avoid deformation, at least three locking structures are provided between the upper bell-mouth section and the lower bell-mouth section. The angle of the bell mouth is 40-50°, and the design of the bell mouth can make the esophageal stent lower into the esophagus, the upper bell mouth facilitates the passage of food, and the lower bell mouth can prevent the stent from shifting, which plays a good role in supporting the stent. The fixation function makes it precisely fixed.

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Abstract

The invention provides a sectional type esophageal stent and a weaving method thereof. The sectional type esophageal stent is a cylindrical net-shaped stent formed by weaving a monofilament, wherein two ends of the cylindrical net-shaped stent are respectively of a horn mouth shape, and the cylindrical net-shaped stent comprises an upper horn mouth section and a lower horn mouth section which areconnected through a plurality of hasp structures. Compared with existing hooking type hasps, the sectional type esophageal stent adopting a cross-shaped hasp structure has the advantages that the support force of the whole esophageal stent can be enhanced, and the esophageal stent has relatively good rigidity; two ends of the cylindrical net-shaped stent are respectively of horn mouth design, after the esophageal stent is inserted into the esophagus, the horn mouth in the upper part is beneficial to the pass of foods, the displacement of the stent can be prevented by virtue of the horn mouth in the lower part, and the stent can be well and accurately fixed; and the weaving process of the whole stent is finished by virtue of one filament, so that the rigidity of the esophageal stent is improved, meanwhile, the axial compression deformation of the esophageal stent can be reduced, and the normal use of the esophageal stent can be guaranteed.

Description

technical field [0001] The invention belongs to the field of medical equipment, and in particular relates to a segmented esophageal stent and a weaving method thereof. Background technique [0002] Esophageal stenosis or obstruction is a common complication of gastrointestinal diseases. The common treatment method is to use domestic stents to treat esophageal stenosis and obstruction. The specific method is to put a biodegradable stent in the lesion. It is formed in the esophagus for a short time and has good The biocompatibility of the stent is completely dissolved, and the degradation time of the stent can be adjusted according to the clinical needs, avoiding the complications of the permanent stent. There are various shapes and braiding methods of esophageal stents. At present, the segmented stent is commonly used. The segmented parts of the segmented stent are connected by interlocking locks, and the whole stent is braided by multiple silk threads, resulting in It tends...

Claims

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Application Information

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IPC IPC(8): A61F2/90
CPCA61F2/90A61F2240/001
Inventor 不公告发明人
Owner SHANGHAI ELITEK BIOSCI CO LTD
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