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A twisted wire structure tracheal stent

A technology of tracheal stent and twisted wire, which is applied in the direction of stent, can solve the problems of difficult implantation process, secondary injury of patients, insufficient support force, etc., and achieve large radial support force, good compression deformation and recovery ability, large deformation effect

Inactive Publication Date: 2016-08-03
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Metal tracheal stents have the advantages of strong deformation ability and large supporting force, but they usually cannot be processed by general-purpose machines, and the implantation process is difficult, which may cause secondary injuries to patients; when non-metallic stents use the same structure as metal stents , can overcome the defects of the metal bracket, but the supporting force is seriously insufficient

Method used

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  • A twisted wire structure tracheal stent
  • A twisted wire structure tracheal stent
  • A twisted wire structure tracheal stent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Both the circumferential filament and the axial filament are polyester filaments with a diameter of 0.2mm. This embodiment provides a tracheal stent with twisted wire structure, which is composed of a twisted unit formed by twisting circumferential filaments and axial filaments to form a tubular structure. Axial filament one a, axial filament two b, axial filament three c, and axial filament four d are four axial filaments in one cycle, wherein axial filament one a and axial long Wire two b forms a twisting unit one, axial filament three c and axial filament four d form twisting unit two, and the two twisting units and the circumferential filaments are twisted in the following ways: figure 2 Shown:

[0024] The twisting method of the circumferential filament 1 is: in the twisting unit 1, the axial filament 1 a is on the left side of the axial filament 2 b, while the axial filament 1 a is on the circumferential filament 1, and the axial filament 1 is on the left side o...

Embodiment 2

[0030] Both the circumferential filament and the axial filament are polydioxanone (PPDO) filaments with a diameter of 0.15mm. This embodiment provides a tracheal stent with twisted wire structure, which is composed of a twisted unit formed by twisting circumferential filaments and axial filaments to form a tubular structure. Axial filament one a, axial filament two b, axial filament three c, and axial filament four d are four axial filaments in one cycle, wherein axial filament one a and axial long Wire two b forms a twisting unit one, axial filament three c and axial filament four d form twisting unit two, and the two twisting units and the circumferential filaments are twisted in the following ways: figure 2 Shown:

[0031] The twisting method of the circumferential filament 1 is: in the twisting unit 1, the axial filament 1 a is on the left side of the axial filament 2 b, while the axial filament 1 a is on the circumferential filament 1, and the axial filament 1 is on the...

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Abstract

The invention discloses a wire twisting structure tracheal stent. The stent is characterized in that a circumferential long wire is hinged to an axial long wire to form a twisting unit, and the twisting unit forms a tubular structure in an encircling manner, and the wire twisting structure tracheal stent is formed by the tubular structure. The artificial tracheal stent has the advantages that a malposed wire twisting structure is formed on the stent in the axial direction, a corrugate structure is formed on the stent in the circumferential direction, the stent has high radial supporting force, meanwhile has good compressive deformation and restoring capacity, and is convenient to smoothly insert.

Description

technical field [0001] The invention belongs to the field of artificial human organs for medical use, and in particular relates to an artificial trachea support with a novel twisted wire structure. Background technique [0002] The artificial tracheal stent is a tubular product. Metal tracheal stents have the advantages of strong deformation ability and large supporting force, but usually cannot be processed by general-purpose machines, and the implantation process is difficult, which may cause secondary injuries to patients; when non-metallic stents use the same structure as metal stents , can overcome the defect of the metal bracket, but the supporting force is seriously insufficient. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an artificial tracheal stent so that it can be implanted smoothly and has sufficient supporting force. [0004] In order to solve the above problems, the present invention provides...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/86
Inventor 李毓陵傅本胜王文祖阮征
Owner DONGHUA UNIV
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