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Thrombus-taking device

A thrombus and mesh technology, applied in the field of thrombus retriever, can solve the problems of low capture efficiency and instability, and achieve the effects of increasing possibility, preventing falling off, and improving stability

Active Publication Date: 2019-07-05
LIFETECH SCIENTIFIC (SHENZHEN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Based on this, it is necessary to provide a thrombus retriever capable of stably and efficiently removing the thrombus for the technical problems of low capture efficiency and instability existing in the existing thrombus retriever

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0035] The thrombus retriever proposed in Example 1 can be used to remove thrombi in blood vessels. Please also refer to Figure 1-Figure 3 The thrombus retriever 100 includes a main structure formed by a mesh planar structure 110 spirally along a preset axis 120, and the preset axis 120 is connected to a point on the proximal side edge and the distal side edge of the mesh planar structure 110 respectively. The lines overlap or are parallel. Preferably, the preset axis 120 is the central axis of the mesh planar structure 110 . In other embodiments, the preset axis 120 may also be a diagonal line of the mesh planar structure 110 .

[0036] please refer again figure 1 , the mesh plane structure 110 constituting the thrombus remover 100 includes a proximal end point 111, a distal end point 112 and several grids 113, the grid 113 is composed of several mesh rods 114, and the width of the mesh rods 114 is 0.05 mm-0.5 mm. When removing the thrombus, the proximal end point 111 i...

Embodiment 2

[0057] The same part as Embodiment 1 in Embodiment 2 will not be repeated here, the difference is mainly that, please refer to Figure 10 , the mesh planar structure 710 is composed of several mesh planar components 711 connected in series, and the radial length of each mesh planar component 711 gradually decreases from the middle to both ends. The radial length refers to the length of a line segment perpendicular to the line connecting two points farthest away from the mesh plane component 711 and connecting two points on the edge of the corresponding mesh plane component 711 . The thrombus retriever 700 formed after the helical mesh planar structure 710 is a segmented helical structure, please refer to Figure 11, including the helical structure of the first segment (that is, the helical structure formed after the helical mesh planar component 7111 is spiraled), the helical structure of the second segment (that is, the helical structure formed after the helical mesh planar c...

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Abstract

The present invention relates to a thrombus-taking device. The thrombus-taking device comprises a main body structure spirally formed by a mesh planar structure along a predetermined axis, the predetermined axis is connected with a respective point at a proximal side edge and a distal side edge of the mesh planar structure respectively to form line overlaps or parallels, the main body structure comprises a plurality of wave peaks and a plurality of wave troughs, and distance between the adjacent two wave peaks or wave troughs is greater than 0. The thrombus-taking device can perform thrombus-taking stably and efficiently, and causes relatively small damages to inner walls of blood vessels during the thrombus-taking process.

Description

technical field [0001] The invention relates to the technical field of interventional medicine, in particular to a thrombus retriever. 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 epidemiological studies, there are 3 out of 4 stroke patients. Various degrees of disability or death occurred. [0003] Acute ischemic stroke (AIS, acute ischemic stroke), commonly known as cerebral infarction, is the damage of nerve tissue caused by ischemic necrosis of local brain tissue caused by sudden blockage of blood flow in the brain. Acute ischemic stroke is the most common type of stroke and the main cause of death or disability in middle-aged and elderly people. Especially acute stroke caused by large vessel occlusion is dangerous and has a high mortality or disability rate. Once a stroke occurs, it will cau...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/221
CPCA61B17/221A61B2017/2217
Inventor 胡龙虎李思漪
Owner LIFETECH SCIENTIFIC (SHENZHEN) CO LTD