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A technology of side rods and grid units, which is applied in the field of medical devices, can solve problems such as the decrease of dimensional resilience and the influence of deformation, and achieve the effects of uniform distribution of stress and strain, avoiding stress and strain concentration, and improving resilience

Pending Publication Date: 2022-05-17
SHANGHAI ACHIEVA MEDICAL SUZHOU CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present application provides a bracket to solve the technical problems that the existing stent and thrombus removal bracket are subjected to large stress and strain for a long time, which will cause deformation to affect the size and decrease the resilience

Method used

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Embodiment Construction

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0025] see Figure 1 to Figure 3 , figure 1 It is a schematic diagram of the overall structure of an embodiment of the bracket of the present application; figure 2 It is a schematic diagram of the overall unfolded structure of an embodiment of the stent of the present application; image 3 It is a schematic diagram of a partially deployed structure of an embodiment of the stent of the present application.

[0026] An embodiment of the present ...

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Abstract

The stent is of a self-expandable tubular grid structure, the two ends of the tubular grid structure are open, the stent comprises a plurality of connected first grid units, each first grid unit comprises a plurality of side rods, and the first grid units are arranged in the direction from the middles of the side rods to the two ends of the side rods. And the sectional area of the side rod is gradually increased. The section area of the side rod of the first grid unit is gradually increased in the direction from the middle to the two ends, so that the rigidity of the side rod is gradually increased in the direction from the middle to the two ends, the dependent variables of the end of the side rod and the area close to the end are reduced, stress and strain are evenly distributed when the support deforms, and the stability of the support is improved. Stress strain concentration in a local area is avoided, deformation of the support is avoided, the size is prevented from being affected, and the rebound resilience of the support is improved.

Description

technical field [0001] The application belongs to the technical field of medical devices, and in particular relates to a stent. Background technique [0002] Interventional methods, such as the use of microcatheters to deliver stents, dilated balloons, and embolic coils to reach designated lesion sites, have become standard methods for the treatment of vascular diseases. This method is very effective in treating diseases in some locations where traditional surgical methods are at great risk. [0003] In the past 30 years, interventional therapy based on stent implantation has developed rapidly and has become an important means of cardiovascular and cerebrovascular diseases. Stent implantation is based on percutaneous puncture angioplasty, and the stent is sent to the lesion through a catheter to expand, support and dredge the blood vessel. Stents have continued to evolve and are now commonly used to treat narrowing of blood vessels and aneurysms. When used to treat stenos...

Claims

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Application Information

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IPC IPC(8): A61F2/90A61F2/91
CPCA61F2/90A61F2/91A61F2250/0098A61F2210/0061
Inventor 王禹都王大伟张一叶萍杨鹏飞
Owner SHANGHAI ACHIEVA MEDICAL SUZHOU CO LTD
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