Adjustable support type thrombus extraction device

A stent-type, adjustable technology, applied in stents, medical science, prostheses, etc., can solve problems such as poor operation feel, achieve strong control, reduce the possibility of accidental thrombus falling off, and control the expansion diameter

Pending Publication Date: 2021-10-22
CHANGZHOU KEYNEUT MEDICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, according to clinical experience, one-handed control will have habitual problems, and there are also problems with poor operating feel.

Method used

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  • Adjustable support type thrombus extraction device
  • Adjustable support type thrombus extraction device
  • Adjustable support type thrombus extraction device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Combine Figure 1- Figure 4B This example will be described. This embodiment provides an adjustable stent type endolic bursting device including: the expansion bracket 10, both ends of the expandable bracket 10 can be defined as the proximal end and the distal end 11, respectively correspond to figure 2 The right end and the left end, the expandable bracket 10 can be radially expanded or radially collapsed in the proximal end and the distal spacing; the expandable bracket 10 does not be self-expanded, requiring control of the support wire and traction Relative movement achieves expansion and collapse. Specifically, when the distal end is near the proximal end, the expandable bracket 10 can convert the axial pressure into a radial expansion force such that the expandable bracket 10 gradually expands to the size of the inner diameter of the blood vessel to achieve intravascular Examination of thrombosis. Those skilled in the art will appreciate that the distance between the pr...

Embodiment 2

[0084] In this Example 2, a preferred adjustable stent type endolling device is Figure 5 It is different from that of Example 1 in that the distal and proximal ends of the second operation filament 22 have different diameters. Preferably, the distal end of the second operation filament 22 has a smaller diameter than the proximal end. The portion of the second operating filament 22 should have a small diameter, and the design of the variable diameter is used in the present embodiment, and the second operation filament 22 has a larger diameter in the opposite body, which makes this part. The segment has higher mechanical strength, better grip, and more relative positions that lock the first operating filament 21 and the second operation filament 22 when necessary.

[0085] The proximal section 22 '(i.e., large diameter section) (i.e., large diameter section), which may be smoothed, i.e., the same material is integrated, or two diameter wire connections can also be used. production. ...

Embodiment 3

[0089] Example 3 On the basis of Example 2, a plurality of preferred adjustable stent type endolling devices were provided to improve the hand-held operation and identification of the first operation filament 21 and the second operation filament 22.

[0090] The distal portion section of the first operating filament 21 and / or the second operation filament 22 has a smooth surface, preferably a smooth surface being a hydrophilic coating.

[0091] The proximal portion of the first operating wire 21 and / or the second operation filament 22 has a non-slip surface, preferably a non-slip surface, or a non-slip engrave, or a non-slip layer.

[0092] Preferably, the first operating filament 21 proximal section 21 'and / or the second operation filament 22 proximal section 22' forms a non-slip surface.

[0093] according to Figure 5 In this Example 3, it is preferred that the first working wire 21 and / or the proximal portion section of the second operation filament 22 have a color flag...

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PUM

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Abstract

An adjustable support-type thrombus extraction device of the present invention comprises: an expandable stent 10, a sleeve, a first operation wire and a second operation wire; the expandable stent 10 comprises a proximal end and a distal end; the far end of the sleeve is connected with the near end of the expandable stent, and the near end of the sleeve is provided with a connecting piece; the connecting piece has a fixed point and a through hole; the first operation wire penetrates through the through hole and can slide in the sleeve, and the first operation wire is fixedly connected with the far end of the expandable stent; the second operation wire is fixedly connected to the fixed point of the connecting piece; and the near ends of the first operation wire and the second operation wire are used for in-vitro handheld operation. An operation handle is not needed, the expansion diameter of the stent is controllable, expansion and folding of the stent are achieved through relative movement between a supporting wire and a traction wire, the controllability of operation is higher, left and right hands are jointly used for control, and the habitual problem of single-hand control does not need to be considered. Meanwhile, the first operation wire and the second operation wire can be independently controlled, so that the problem that the expandable stent extends to the far end in the contraction process can be avoided, and the possibility that thrombus falls off accidentally is reduced.

Description

Technical field [0001] The present invention relates to the field of interventional medical devices, and more particularly to an adjustable stent type endolic. Background technique [0002] The principle of cerebral artery brackets is through microcarbon-tube technology, the stent endolic equipment reaches the intracranial artery along the lower limb artery, and then the end of the tubing device is "arrest" to block the blood vessel, restore the blood vessel unobstructed. During the operation, the doctor only needs to cut a cut in the patient's thigh, and the bracket can be sent to the blood vessel, reaching the pathogenesis, eliminating the patient to receive the pain of craniotomy. [0003] Chinese Invention Patent CN109223107A discloses an ejecting device, including: an ejecting bracket, a delivery system, and a push handle. The control of the expandable bracket is achieved by pushing the handle housing and the pusher. However, through clinical experience, there is a habitual ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/22A61F2/91
CPCA61B17/22A61F2/91A61B2017/22038A61B2017/22045A61F2250/0098A61F2210/0014
Inventor 李真邢雷戴威骏其他发明人请求不公开姓名
Owner CHANGZHOU KEYNEUT MEDICAL TECH CO LTD
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