Segmented double-membrane flexible stent and manufacturing method thereof

A manufacturing method and technology of silicone membrane, applied in the direction of the bracket, can solve the problems of applying large external force, restricting the application of the bracket, and bending the contour, and achieving the effect of strong adaptability and simple structure

Pending Publication Date: 2021-09-17
SHANGHAI TONGREN HOSPITAL
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current metal mesh stents are mostly mesh tube stents braided by metal fibers, and a plastic film is pasted on the outside of the metal mesh. The mesh tube has a certain degree of elasticity, but the coefficient of stiffness is relatively large, that is, a certain deformation needs to be applied. Larger external

Method used

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  • Segmented double-membrane flexible stent and manufacturing method thereof
  • Segmented double-membrane flexible stent and manufacturing method thereof

Examples

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Embodiment 1

[0019] A segmented double-membrane flexible stent, comprising a mesh tube unit section 11, a fiber 12 and a stent head 13, such as figure 1 and figure 2 As shown, the specific structure is:

[0020] The mesh pipe unit section 11 is braided by metal fibers, there are at least three mesh pipe unit sections 11, and the mesh pipe unit sections 11 are arranged in order from end to end, and there are gaps between adjacent mesh pipe unit sections 11 , the adjacent mesh tube unit sections 11 are connected with fibers 12 to form a mesh tube 10, and the connected fibers 12 form a ring around the mesh tube unit section 11, and the two ends of the mesh tube 10 are respectively provided with support heads 13, and the support The head 13 is a tubular shape woven by metal fibers. The outer diameter of the support head 13 is greater than the outer diameter of the mesh pipe unit section 11. There is a gap between the support head 13 and the mesh pipe 10. The support head 13 and the mesh The...

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Abstract

The invention relates to the field of accessories for closing a wound or keeping the wound closed in a surgical anastomosis operation, in particular to a segmented double-membrane flexible stent and a manufacturing method thereof. The segmented double-membrane flexible stent comprises net-shaped pipe unit sections (11) and is characterized in that the net-shaped pipe unit sections (11) are sequentially arranged in an end-to-end opposite mode, the adjacent net-shaped pipe unit sections (11) are connected in a hooked mode through fibers (12) to form a net-shaped pipe (10), stent heads (13) are correspondingly arranged at the two ends of the net-shaped pipe (10), and the stent heads (13) and the net-shaped pipe (10) are connected in a hooked mode through the fibers (12) to form a flexible stent (1); and the flexible support (1) is coated with silica gel membranes, and the silica gel membranes attached to the outer side faces of the hooked fibers (12) are mutually folded to form wrinkles. The manufacturing method of the segmented double-membrane flexible stent is characterized by comprising the following steps that I, the silica gel membranes are pasted; and II, sewing is carried out. The segmented double-membrane flexible stent is simple in structure and high in adaptability.

Description

technical field [0001] The invention relates to the field of accessories used in surgical anastomosis for closing wounds or keeping wounds closed, in particular to a segmented double-membrane flexible stent and a manufacturing method thereof. Background technique [0002] In recent years, various metal mesh stents have begun to be used as a support in the intestinal cavity to treat malignant colorectal obstruction, that is, a metal mesh stent is placed at the narrowed part of the intestine to stretch the intestinal tract, so that the narrowed or obstructed part can be reopened. Restoration of patency, the metal mesh stent is suitable for patients with duodenum, small intestine, colon, rectal stenosis and anastomotic stenosis caused by advanced abdominal malignant tumor invasion, compression or other malignant lesions, and can be used as a permanent cure for colorectal cancer malignant obstruction Or temporary treatment, and create conditions for elective surgery. The curren...

Claims

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Application Information

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IPC IPC(8): A61F2/90
CPCA61F2/90
Inventor 茅爱武冷德嵘邹晓平唐志王忠敏尚鸣异李玉倩
Owner SHANGHAI TONGREN HOSPITAL
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