Thrombus excision system

A thrombus and excisor technology, applied in the field of devices for interventional treatment of total occlusive vascular disease, can solve problems such as difficulty in reaching the brain, hard device, large size, etc., to avoid damage to blood vessels, good flexibility, good pushing and twisting performance Effect

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
Publication Date
2015-05-20
Patent Text Reader

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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Description

technical field

[0001] The invention relates to the technical field of medical surgical instruments, in particular to an instrument for interventional treatment of total occlusion vascular disease. Background technique

[0002] For embolic lesions, drug thrombolysis and mechanical thrombectomy are generally used clinically for treatment. Due to the strict time window limit and many complications of drug thrombolysis, most patients will eventually adopt mechanical thrombectomy.

[0003] Under the premise of ensuring the thrombectomy effect, the existing mechanical thrombectomy devices basically have a disadvantage: the device is relatively hard, or the size of the device is large, and it is difficult to reach narrow and tortuous vascular lesions such as the brain.

[0004] Therefore, how to provide a mechanical thrombectomy device capable of entering small tortuous blood vessels has become an important technical problem to be solved urgently by those skilled in the art. Con...

Examples

Embodiment Construction

[0041] The invention discloses a thrombectomy system. The thrombectomy device is very soft and can easily enter the cerebral blood vessel; Free delivery in the heart and brain blood vessels to avoid damage to blood vessels.

[0042] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0043] see Figure 1-Figure 4 , figure 1 A schematic structural view of a thrombectomy device provided by an embodiment of the present invention; figure 2 Schematic diagram of the structure of the balloon guide catheter provided by th...