Sectional thrombus extraction device and thrombus extraction method making use of thrombus extraction device

A segmented and inter-segment technology, applied in the field of medical devices, can solve the problems of poor transportability and easy thrombus fall off, and achieve the effect of excellent adherence, no omission of marginal thrombus, and improved surgical efficiency.

Pending Publication Date: 2017-04-26
北京久事神康医疗科技有限公司
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  • Abstract
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  • Claims
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Problems solved by technology

[0012] The technical problem to be solved by the present invention is to provide a segmented thrombectomy device and a method for using the thrombectomy device to remove the thrombus, so as to solve the problem that the thrombus is easy to fall off during the capture process and the flexibility of the thrombus removal device in the existing thrombus removal technology. , The problem of poor conveyance

Method used

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  • Sectional thrombus extraction device and thrombus extraction method making use of thrombus extraction device
  • Sectional thrombus extraction device and thrombus extraction method making use of thrombus extraction device
  • Sectional thrombus extraction device and thrombus extraction method making use of thrombus extraction device

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Embodiment 1

[0050] Such as Figure 1 to Figure 4 , the segmented thrombectomy device of the present invention is used to remove the thrombus in the intracranial large blood vessel 9 of a stroke patient, so as to restore the blood flow, and it includes a blood vessel thrombectomy bracket 2 and a delivery system connected to one end of the blood vessel thrombectomy bracket 2 , the vascular thrombectomy stent 2 is a self-expandable stent, and the vascular thrombus retrieval stent 2 is a self-expandable network structure formed by connecting multiple unit grids; the network structure is provided with a radial gap 1, and the radial gap 1 divides the The network management structure is divided into multiple sequentially connected segmented structures. Among them, this embodiment figure 2 Shown are the structural features of the connecting parts of the radial gap 1 of the segmented structure. In this embodiment, its width is equal to the width of the unit grid, and the whole vessel thrombectom...

Embodiment 2

[0066] Figure 8 It is a schematic structural diagram of a blood vessel thrombectomy bracket 2 in Embodiment 2 of the segmented thrombectomy device of the present invention. Such as Figure 8 As shown, the structure of the thrombectomy stent provided in Example 2 is basically the same as that in Example 1, with the following differences: the width of the radial gap 1 is equal to the width of the unit grid, and the entire vessel thrombectomy stent 2 includes 3 a radial conical gap.

[0067] Of course, the width of the radial gap 1 can be an integer multiple of the unit grid width; the blood vessel thrombectomy support 2 can have other numbers of radial tapered gaps.

[0068] For example, Figure 9 It is a schematic structural view of the thrombectomy bracket in Embodiment 3 of the segmented thrombectomy device of the present invention. Such as Figure 9 As shown, the structure of the thrombectomy bracket provided in Example 3 is basically the same as that in Example 1, wit...

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Abstract

The invention relates to the technical field of medical apparatuses, in particular to a sectional thrombus extraction device and a thrombus extraction method making use of the thrombus extraction device. The sectional thrombus extraction device comprises a vascular thrombus extraction stent and a conveying system which is connected to one end of the vascular thrombus extraction stent, wherein the vascular thrombus extraction stent is of an auto-expansion meshed pipe structure which is formed by mutually connecting a plurality of unit grids; radial clearances are formed in the meshed pipe structure; by virtue of the radial clearances, the meshed pipe structure is divided into a plurality of sectional structures which are sequentially connected, so that the circumstance that a thrombus is divided by excessive meshes is avoided, and subsequently, the relative integrity of the thrombus is maintained, the risk of distal embolization in the case that the thrombus breaks off is reduced and rapid and reliable thrombus extraction is achieved; due to the design of the sectional structure, the softness and conveying performance of the thrombus extraction stent are enhanced, and the thrombus extraction stent can be conveyed to a blood vessel which is relatively thin in distal end; and the sectional meshed stent structure is low in metal coverage rate and relatively low in injury on endangium in a thrombus extraction process, and related complications caused by mechanical thrombus extraction are reduced.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a segmented thrombectomy device and a thrombus removal method using the thrombus removal device. Background technique [0002] Stroke is a common type of disease in medicine. China is also a major stroke country in the world. Stroke has become the number one cause of death among Chinese residents. According to relevant foreign epidemiological studies, 3 out of every 4 stroke patients people with varying degrees of disability. [0003] Acute ischemic stroke (acute ischemic stroke, AIS, commonly known as cerebral infarction) is the most common type of stroke, accounting for 80% of all strokes, especially acute stroke caused by large vessel occlusion, which is often dangerous, with mortality and disability. The high rate will cause great harm to the patients; once a stroke occurs, it will cause a heavy burden to the patients themselves, their families and society. [0004]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/22
CPCA61B17/22A61B2017/22035
Inventor 孙剑
Owner 北京久事神康医疗科技有限公司
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