Intravascular thrombectomy device

Abstract

The invention relates to the technical field of medical instruments, in particular to an intravascular thrombectomy device. The intravascular thrombectomy device comprises a sheathing canal, an operating rod, a first dense net and a second dense net; the first dense net and the second dense net are elastic umbrella-shaped structures which can be automatically unfolded in a natural state; the closed ends of the two dense nets are fixedly connected with operating rods; the open ends are oppositely arranged, and part of the first dense net is inserted into the second dense net; the outer diameter of the second dense net is larger than that of the first dense net in an unfolded state, so that an annular inlet is formed at the overlapped part; the operating rod can axially move relative to the sheath canal, so that the first dense net and the second dense net can be pushed out of the sheath canal to be automatically unfolded or pulled into and contracted in the sheath canal. According to the intravascular thrombectomy device, blood flow cannot be blocked during thrombus extraction, the first dense net and the second dense net can be expanded and contracted only by moving the operating rod relative to the sheath canal, thrombus is collected and wrapped, the thrombus is difficult to escape, the structural design is ingenious, and use is convenient and fast.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an intravascular thrombectomy device. Background technique [0002] At present, there are mainly two methods for the treatment of thrombosis: drug thrombolysis and mechanical thrombectomy. Due to the long-lasting effect of drug thrombolysis and the large thrombus, the effect is poor. Therefore, mechanical thrombectomy has become a research hotspot in recent years. At present, mechanical thrombectomy mainly includes the following methods: thrombus suction, thrombectomy with grab, and laser thrombectomy. Among them, the thrombectomy with the catcher uses the thrombus retrieval balloon to contact the blood vessel wall to scrape off the thrombus and take it out of the body. When removing the thrombus, because the balloon will block the blood flow of the blood vessel, it will have a greater impact on the human body. Therefore, there has been a thrombus removal filter, which w...

AI Technical Summary

Problems solved by technology

Among them, the thrombectomy with the catcher uses the thrombus retrieval balloon to contact the blood vessel wall to scrape off the thrombus and take it out of the body. When removing the thrombus, the balloon will block the blood flow of the blood vessel, which has a great impact on the human body.

Therefore, there is a thrombus removal filter, which will not block the blood flow during thrombus removal, but most of the thrombus removal filters are currently thrombus removal filters, which have the problem of thrombus escape

At present, there are also some thrombectomy devices that use thrombus removal filters to avoid or reduce thrombus escape, but the structure is complex, inconvenient to use, and the manufacturing and maintenance costs are high.

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