Thrombus aspiration catheter with telescopic clot crushing assembly

Abstract

The invention relates to a thrombus aspiration catheter with a telescopic clot crushing assembly. The catheter comprises a suction tube, a multi-channel tube base and a crushing assembly, and an annular medicine injection channel is formed between an inner tube and an outer tube of the suction tube, and the multi-channel tube base is composed of a main tube body, a medicine injection branch pipe and a suction branch pipe, the crushing assembly comprises a control channel tube, a rotating shaft, a control rod and a crushing unit, the rotating shaft penetrates through the control channel tube, and the crushing unit comprises a first sleeve, a second sleeve and a crushing rod, the crushing rod is composed of two rod bodies with two head ends hinged together, the tail ends of the two rod bodies are hinged to the first sleeve and the second sleeve respectively, the first sleeve fixedly sleeves the rotating shaft, and the second sleeve slidingly sleeves the rotating shaft. When the thrombuswhich is large in volume and high in viscosity exists, the crushing assembly is unfolded, by means of the crushing assembly, the large block of thrombus can be crushed, the large block of the thrombuscan smoothly enter the suction tube conveniently, and meanwhile crushing and oil suction can be conducted; the working efficiency is high.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a thrombus suction catheter with a telescoping thrombus block crushing component. Background technique [0002] Acute myocardial infarction (AMI) is a sharp reduction or interruption of coronary blood supply on the basis of coronary artery disease, causing severe and persistent acute ischemia of the corresponding myocardium, leading to myocardial necrosis. The incidence of AMI is dangerous, with a high mortality and disability rate. Since atherosclerosis is the pathological basis of acute cardiovascular and cerebrovascular events, the main cause of acute cardiovascular events is local atherosclerotic plaque rupture and thrombus formation, and thrombus formation depends on the susceptibility of atherosclerotic plaques. Destructive, vulnerable plaques are prone to plaque rupture and thrombosis, leading to the occurrence of acute coronary syndrome. [0003] Thrombus aspirat...

AI Technical Summary

Problems solved by technology

Although this technical solution solves the problem of aspiration of large-volume and highly viscous thrombus, there are still some deficiencies.

First of all, the head end of the suction tube is an oblique cut opening, although it is convenient for the puncture of the suction tube, but there is also a risk of operation error and the head end punctures the blood vessel

Secondly, the operation of dispersing the thrombus and the suction operation cannot be carried out at the same time. The operation of dispersing the thrombus cannot be performed during suction, and the operation of dispersing the thrombus cannot be performed during suction. Frequent replacement of parts is required between the two operations. Complicated operation and low suction efficiency

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