Thrombus extraction apparatus

Abstract

The invention relates to a thrombus extraction apparatus. The thrombus extraction apparatus comprises an expandable part, a transmitting part and a thrombus collecting part arranged at the far end of the expandable part. By means of the thrombus extraction apparatus, enough storage space can be provided for captured thrombi, the captured thrombi are fixedly limited, fallen or cracked shifted thrombi or blood clots or particles in the thrombus extraction process can be captured and collected, and therefore the thrombus extraction capacity is improved; meanwhile, good position fixing of the thrombus extraction apparatus can be achieved, and the problem that the position of the thrombus extraction apparatus is shifted is solved.

Description

technical field [0001] The invention relates to a medical device for removing thrombus, which can remove or remove obstacles in narrowed and / or blocked nerve vessels, peripheral vessels, and heart vessels, so as to restore blood flow. Background technique [0002] Acute ischemic stroke seriously endangers human life and requires immediate treatment. Typical treatment options include intravenous thrombolytic drugs or use of specialized thrombectomy devices. [0003] The first option involves the use of thrombolytics, such as thrombolytics (tissue plasminogen activator (t-PA)). Generally 60% of patients can benefit from this type of treatment, especially for patients with blockage of large blood vessels. Typically, t-PA is injected intravenously into the vascular system to dissolve blood clots and allow blocked blood to flow to neurovascular vessels. However, intravenous t-PA is limited and must be administered within 4.5 hours of stroke onset. In addition, some drugs are ...

AI Technical Summary

Problems solved by technology

For example, when the entire device is retrieved with the thrombus, some thrombi, blood clots, or particles may fall off or break off during retrieval and remain in the blood to block blood flow, or the thrombus itself cannot be achieved due to the complexity of the thrombus itself. completely removed

In addition, after the intracranial thrombectomy device is released in the blood vessel, problems such as device position deviation may occur due to lack of good position fixation

[0006] In addition, although some known thrombectomy devices have been optimized in terms of capturing thrombus, these thrombectomy devices themselves have problems such as complex structure, cumbersome manufacturing process, high material and manufacturing costs, and because these thrombectomy devices do not have The material and size of the thrombus-capturing components are specifically designed, so these thrombus retrieval devices cannot be adapted to selectively capture thrombus of various types and sizes, so that comprehensive and effective collection of thrombus, blood clots, and particles cannot be achieved and storage

[0007] Further, since the known thrombus removal devices are not provided with components capable of restricting thrombus movement in the device, it will not only lead to a reduction in the thrombus removal efficiency of the thrombus removal device, but also in the process of continuous blood flow, there is such a Possibly, the thrombus, blood clot or particles that have been captured leave the thrombus retrieval device for various reasons, so that the thrombus cannot be completely removed, resulting in a reduction in the thrombus retrieval capability

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