Thrombus excision system

By designing a soft thrombectomy device and a balloon guiding catheter, the problem of difficulty for mechanical thrombectomy devices to enter narrow blood vessels is solved, safe and effective delivery and thrombectomy within the cerebral blood vessels are achieved, and the success rate and safety of the operation are improved.

CN104622538APending Publication Date: 2015-05-20HUNAN RUIKANTONG TECH DEV CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUNAN RUIKANTONG TECH DEV CO LTD
Filing Date
2015-03-12
Publication Date
2015-05-20

AI Technical Summary

Technical Problem

Existing mechanical thrombectomy devices are difficult to reach when entering narrow and tortuous blood vessels such as the brain, and can easily damage blood vessels.

Method used

A thrombectomy system is designed, which includes a thrombectomy device, a delivery microcatheter and a balloon guiding catheter. The hardness of the guide wire head of the thrombectomy device is smaller than that of the balloon guiding catheter and has good pushing and torsion performance. , the distal end is soft and can be transported freely within complex cardiovascular and cerebrovascular vessels to avoid damage to blood vessels.

Benefits of technology

The thrombectomy device can easily enter the cerebral blood vessels, has good flexibility and pushing performance, avoids blood vessel damage, and improves the success rate and safety of the operation.

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Abstract

The invention discloses a thrombus excision system. An embolus is extracted through a mechanical embolus extraction device, a blood vessel is dredged, and revascularization of the blood vessel is achieved. A saccule guide catheter is put at the near end of the embolus part when the embolus is extracted, blood flow is temporarily blocked, and thus a fine crushed embolus generated in the embolus extraction process is prevented from being flushed to the far end of the blood vessel; meanwhile, for a relatively large embolus, a part of thrombus can also be sucked by virtue of the saccule guide catheter, and then the residual thrombus can be extracted by virtue of a thrombus exsector. The thrombus exsector, the saccule guide catheter and a delivery microcatheter are arranged on the thrombus excision system disclosed by the invention, wherein the thrombus exsector is used as a main component, an excision spring is arranged, and the release state of the excision spring is a conical spiral state. Compared with the prior art, the thrombus excision system has the advantages that the thrombus exsector is very soft, the minimal through size is 0.014' (0.36mm), the thrombus exsector can easily enter a cerebral vessel, a near-end protection technology is adopted in the operation process, and thrombus suction is combined with mechanical embolus extraction, so that the success rate of the operation is improved, and the complications are reduced.
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