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Supporting frame capable of being taken out

A support frame and elastic technology, applied in the field of removable support frame, can solve problems such as poor flexibility, loss of support, anastomosis, displacement or slipping

Inactive Publication Date: 2011-05-04
周星
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the prior art filmed metal stents, the film material is usually made of medical silica gel or polyurethane material, and the film is adhered to the wire. The peristalsis of the metal stent is constrained by the film material, resulting in poor flexibility and often shifting or slipping. , lose support or cause anastomotic leakage
[0003] Therefore, the prior art also lacks a temporary support frame specially used for esophageal reconstruction, or tracheal reconstruction, or urethral reconstruction, or esophagus-esophageal anastomosis, or intestinal-intestinal anastomosis. The attachment and crawling of the new lumen can promote the growth of the new lumen, and provide sufficient support time for the growth of the new lumen, mucosal epithelialization and scar tissue stabilization, and after the new lumen mucosal epithelization and scar tissue stabilization, It can be easily taken out or removed in a non-traumatic or minimally traumatic way, but there is no such removable support frame in the prior art, and a new design needs to be provided

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] Embodiment 1: U-shaped monofilament weaving of the present invention can take out the support frame

[0075] Using nickel-titanium shape memory alloy (Nitinol alloy) wires with a recovery temperature of 15°C and a diameter of 0.25mm, weaving the support (1) in the mold, and then performing heat treatment in the mold to make it a mesh support above the recovery temperature, After polishing and cleaning, the bracket (1) of the present invention has been obtained, refer to figure 1 .

[0076] The medical polyurethane film is used as the raw material to manufacture the inner membrane (2) and the outer membrane (3), and the manufactured inner membrane (2) is placed on the inner wall of the stent (1), and the outer membrane (3) is placed on the inner wall of the stent (1). outer wall, and then use a heat sealing machine to heat seal a part of the inner membrane (2) and the outer membrane (3) corresponding to the mesh part of the stent (1) together to form the junction (4) of...

Embodiment 2

[0082] Embodiment 2: The cross grid of the present invention can take out the support frame

[0083] The manufacturing method of this embodiment is basically the same as that of Embodiment 1, and its feature is that the weaving method of the support (1) has adopted the weaving method of cross grid, referring to Figure 22 to Figure 23 and instructions.

Embodiment 3

[0084] Embodiment 3: The removable support frame provided with the connecting ring of the present invention

[0085] The manufacturing method of this embodiment is basically the same as that of Embodiment 1, and its feature is that a connecting ring (6) is added to the stent (1), and the connecting ring (6) is made of medical flexible material, and is arranged on the outer side of the adventitia (3). The suture is fixed on the support body (11) of the bracket (1). The medical flexible material for making the connecting ring (6) is at least selected from: polyester (polyethylene terephthalate fiber), polyethylene, polypropylene, polyurethane, polytetrafluoroethylene, fiber-reinforced medical flexible polymer material, Good biocompatibility, high strength and light weight are required. refer to Figure 6 to Figure 11 and instructions.

[0086] There are two connecting rings (6), the connecting rings (6) have a width of about 3 mm to 15 mm, and are respectively sutured and fix...

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Abstract

The invention relates to a supporting frame capable of being taken out. In the invention, a sandwich structure that a support is arranged between an inner membrane and an outer membrane is adopted; the connection part of the inner membrane and the outer membrane is opposite to a mesh of the supporting frame; and the supporting frame can freely wriggle in the space formed by the disconnection part of the inner membrane and the outer membrane, therefore, the supporting frame capable of being taken out, provided by the invention, has particularly good flexibility; a full covering membrane structure is adopted to ensure that granulation tissues cannot grow into the supporting frame; and a detachable design is adopted to ensure that the supporting frame can be conveniently taken out. The supporting frame capable of being taken out can be used for inducing and promoting the growth of a neonatal cavity tube, the covering and the epithelization of a mucous membrane, can be conveniently taken out and detached under the direct vision of an endoscopy after the mucous membrane of the neonatal cavity tube is epithelized and the organization is stable, and can be used for a temporary support under the situations of esophagus rebuilding and injury repairing, trachea rebuilding and injury repairing, urethra rebuilding and injury repairing, esophagus-esophagus anastomosing, intestine-intestine anastomosing, nasal cavity rebuilding and injury repairing, external auditory canal rebuilding and injury repairing and the like.

Description

technical field [0001] The invention relates to a temporary support frame used for reconstruction after resection of the human cavity or anastomosis of the cavity, especially for esophageal reconstruction, or tracheal reconstruction, or urethral reconstruction, or esophagus-esophageal anastomosis, or intestinal-intestinal anastomosis, etc. Removable support frame for use below. Background technique [0002] In the prior art, when performing esophageal reconstruction or tracheal reconstruction, medical silicone tubes are often used as clinical supports to prevent tissue collapse, and during urethral reconstruction, silicone catheters are inserted to prevent tissue collapse. Because when this medical silicone tube is too thin, the supporting force is not enough, and when it is too thick, the diameter of the inner hole is not large enough or the quality is too heavy. In addition, the silicone tube is also easy to shift and slip as a clinical support. In addition, whether it is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/82A61F2/90A61L31/02A61L31/04A61L31/06A61L31/12A61L31/16
Inventor 周星周泰立罗丽飞
Owner 周星
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