Stent for near bifurcation part lesion

A technology of parts and bifurcations, applied in stents, medical science, prostheses, etc., can solve the problems of the influence of main blood vessels and the inability to completely cover the lesion, and achieve the effect of uniform distribution, good support effect, and good flexibility

Pending Publication Date: 2018-12-07
HANGZHOU WEIQIANG MEDICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a vascular stent for interventional treatment where stenosis or occlusive lesion occurs near the bifurcation of the blood vessel in view of the defects of the prior art, so as to solve the problem of implanting the existing vascular stent into branch vessels. Afterwards, the lesion cannot be completely covered or the intrusion into the main blood vessel affects the contralateral blood flow and causes complications

Method used

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  • Stent for near bifurcation part lesion
  • Stent for near bifurcation part lesion
  • Stent for near bifurcation part lesion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Embodiment 1, as Figure 2-4 As shown in , 9, a stent for lesions near bifurcations is a tubular stent formed by a plurality of wave-shaped supports 1111, 1121, 121, 131 axially connected together, and the tubular stent includes sequentially connected proximal ends The supporting mechanism 110, the central supporting mechanism 120 and the distal supporting mechanism 130 have three parts in total; the central supporting mechanism 120 and the distal supporting mechanism 130 are ring structures respectively; the proximal supporting mechanism 110 includes a The circumferential support portion 111 connected to the zone support mechanism 120, the directional support portion 112 arranged at the proximal end of the circumferential support portion 111; the circumferential support portion 111 is a ring structure; the directional support portion 112 is open in the circumferential direction ring, and its proximal end surface is non-flush to form a local support in the circumferenti...

Embodiment 2

[0062] Example 2, such as Figure 5 As shown, this embodiment is based on Embodiment 1 with some improvements.

[0063] A stent for lesions near the bifurcation, which is a tubular stent formed by a plurality of wave-shaped supports 1111, 1121, 121, 131 axially connected together, the tubular stent includes a proximal support mechanism 110, a middle The zone supporting mechanism 120 and the distal supporting mechanism 130 are composed of three parts, which are the same as those in Embodiment 1, except for the structure of the connection assembly 122 .

[0064] A set of connecting components 122 is provided with at least two connecting rods 1221, and the connecting rods 1221 are fixed between the crest unit 1211 or the trough unit 1213 of one wave-shaped support 1121, 121, 131 and the adjacent wave-shaped support 121, 121, 131 between the wave rods 1212 . The connecting rods 1221 in the same connecting assembly 122 may be arranged in parallel, or arranged in a figure-eight or...

Embodiment 3

[0067] Example 3, such as Figure 6-7 As shown, this embodiment is based on embodiment 1 or 2 with some improvements.

[0068] like Image 6 As shown, the difference from Embodiment 1 or 2 is that the lengths of the probes 1212 of the wave support 111 that make up the proximal support mechanism 110 are not uniform, and the number of probes 1212 in a row of the proximal support mechanism 110 is Similarly, part of the length of the inner wave rod 1212 gradually extends toward the proximal end along the axial direction, thereby forming a slope structure of the proximal support mechanism 110 . That is, the circumferential support portion 111 and the orientation support portion 112 are formed due to the elongated waveform amplitude.

[0069] The rest of the structures are the same as those in Embodiment 1 or 2, and will not be repeated here.

[0070] like Image 6 As shown, in order to further strengthen the adhesion between the stent and the inner wall of the blood vessel, in ...

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Abstract

The invention discloses a stent for near bifurcation part lesion. The stent is a tubular stent formed with a plurality of wavy supporting pieces which are axially connected together. The tubular stentcomprises a near end supporting mechanism, a middle area supporting mechanism and a far end supporting mechanism in sequential connection. The middle area supporting mechanism and the far end supporting mechanism are each of an annular structure. The near end supporting mechanism comprises a peripheral supporting part connected with the middle area supporting mechanism and a positioning supporting part arranged at the near end of the peripheral supporting part. The periphery supporting part is of an annular structure. The positioning supporting part is of a structure with a ring formed peripherally and the near end face not flushed so that the peripheral local support can be formed. By means of the stent close to blood vessel bifurcation suitable for hemadostenosis or occlusive lesion, the problem that after an existing blood vessel stent is implanted in a branch blood vessel, the lesion position cannot be completely covered or the stent protrudes into a main blood vessel, so complications are caused to lateral blood flow is solved.

Description

technical field [0001] The invention belongs to the technical field of medical instruments, and relates to a blood vessel stent, in particular to a blood vessel stent that can be used for interventional treatment of stenosis or occlusive lesions near blood vessel bifurcations. Background technique [0002] With the rapid development of modern society, the degree of population aging is increasing, people's work pressure is increasing, and their living habits are not healthy enough, which leads to frequent occurrence of cardiovascular diseases in our country and has become the number one disease that endangers the health of Chinese people. Its prevention and treatment It has become the focus of domestic and foreign medical circles. Among them, efficient and minimally invasive interventional therapy such as implantation of vascular stents is currently the most important and effective diagnosis and treatment technology for cardiovascular diseases. For vascular stenosis or occlu...

Claims

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Application Information

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IPC IPC(8): A61F2/915
CPCA61F2/915A61F2230/0002A61F2002/825A61F2002/91575
Inventor 郭伟王永胜李建民高国庆
Owner HANGZHOU WEIQIANG MEDICAL TECH CO LTD
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