Thrombus extraction device

A filter screen and main body technology, applied in the field of thrombectomy devices, can solve the problems of thrombectomy failure, small blood vessel embolism, hard thrombus falling off, etc., and achieve the effects of preventing re-embolization, reducing volume, and uniform force

Active Publication Date: 2020-04-28
LIFETECH SCIENTIFIC (SHENZHEN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the existing mechanical thrombus removal products remove the hard thrombus, the hard thrombus is only compressed between the thrombus removal product and the vessel wall. During the withdrawal process, the hard thrombus is easy to fall off from the thrombus removal device, resulting in fail
However, when the existing mechanical thrombus removal products remove soft thrombi, the soft thrombus is easily divided into small thrombi or thrombus fragments, causing re-embolization of small distal blood vessels.

Method used

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Embodiment Construction

[0031] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present invention, so the present invention is not limited by the specific implementations disclosed below.

[0032] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directl...

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Abstract

The invention discloses a thrombus extraction device. The thrombus extraction device comprises a filter screen and a push-pull guide wire connected with the filter screen, the filter screen comprisesa filter screen main body and a clamping part connected to the filter screen main body, and one end, away from the filter screen main body, of the clamping part faces the near end and extends towardsone side close to a longitudinal center shaft. The filter screen is provided with the clamping part, and the clamping part can clamp the thrombus to make the thrombus and the filter screen firmly combined and the contact area between the filter screen and the thrombus increased, so the whole thrombus is evenly stressed, and the situation that the thrombus is cut into fragments due to large local stress in the thrombus taking and withdrawing process is avoided.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a thrombus removal device for intravascular thrombus removal. Background technique [0002] Stroke is a common type of disease in medicine. Acute ischemic stroke (acute ischemic stroke, AIS, 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. . At present, the method of mechanical thrombectomy is generally used in the treatment of acute ischemic stroke, which can quickly recanalize the occluded blood vessel and improve the rate of vascular recanalization. However, the existing mechanical thrombectomy products often ignore the thrombus in the design type. [0003] Thrombus is divided into hard thrombus (that is, white thrombus) and soft thrombus. Hard thrombus has strong viscoelasticity and is difficult to be compressed, while soft thrombus is fragile....

Claims

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Application Information

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IPC IPC(8): A61B17/221A61B17/22
CPCA61B17/22031A61B17/221A61B2017/22034
Inventor 胡龙虎
Owner LIFETECH SCIENTIFIC (SHENZHEN) CO LTD
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