Thrombus taking catheter and thrombus taking device for same

Abstract

The invention provides a thrombus taking catheter. The thrombus taking catheter comprises a blocking sheath and a thrombus taking device, wherein the blocking sheath comprises a sheathing canal; a ball bag is arranged at a far end of the sheathing canal; a handle is arranged at a near end of the sheathing canal in a connected manner; at least two cavities are formed in the sheathing canal; a cavity of the ball bag communicates with a ball bag filling joint on the handle by the first cavity; a developing mark is arranged on the sheathing canal on the ball bag side; the near end of the second cavity communicates with a negative-pressure suction device arranged on the handle in a connected manner; an opening portion which communicates with the second cavity in an axial direction is further formed in the handle; an expander can extend into the second cavity of the sheathing canal from the opening portion of the handle; the thrombus taking device can extend into the second cavity from the opening portion of the handle and comprises an outer tube, an inner tube and a dense net shaped thrombus taking piece; the outer tube and the inner tube are arranged in a sleeving manner coaxially; oneend of the dense net shaped thrombus taking piece is connected with a far end of the inner tube; the other end of the dense net shaped thrombus taking piece is connected with the far end of the outertube, and the inner tube is pulled so that the dense net shaped thrombus taking piece is expanded or loose. By the thrombus taking catheter, the thrombus removal rate can be increased effectively, and the blood loss is reduced.

Description

technical field [0001] The invention relates to the technical field of thrombectomy, in particular to a thrombus retrieval catheter and a thrombus retriever used for the thrombus retrieval catheter. Background technique [0002] Thromboembolic diseases include arterial embolism, arterial thrombosis, and venous thromboembolism. Existing treatments mainly include angiotomy, catheter-based thrombolysis, and percutaneous mechanical thrombectomy. Surgery requires anatomical separation and incision of blood vessels, such as femoral artery, femoral vein or brachial artery incision, etc. With the development of endovascular interventional technology and the innovation of materials, this open surgical method is gradually replaced by minimally invasive interventional endovascular treatment , that is, catheter-based thrombolysis and percutaneous mechanical embolectomy. Catheter-based thrombolysis has a high risk of thrombolytic drug bleeding, and the surgical indications are extremely ...

AI Technical Summary

Problems solved by technology

[0006] In view of the above-mentioned shortcomings of the prior art, the object of the present invention is to provide a thrombus retrieval catheter and a thrombus retriever for the

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