Thrombus filter

A filter and thrombus technology, which is applied in the field of medical devices, can solve the problems of small mutual movement range and scratching of blood vessel walls, and achieve the effect of avoiding scratches of blood vessel walls

CN113081383AActive Publication Date: 2021-07-09SUZHOU ZENITH VASCULAR SCITECH LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2021-07-09

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Abstract

The invention belongs to the technical field of medical instruments, and discloses a thrombus filter which comprises a conveying structure, a filter part and a guide wire, the conveying structure comprises a first tube body and a conveying part, and the filter part has a first working state in which the filter part is unfolded and attached to the blood vessel wall and a second working state in which the filter part is contracted in the first tube body. A first opening and a second opening are formed in the two ends, along the upstream and downstream of blood flowing, of the filter part respectively, the conveying part can push the filter part to push the filter part out of the first tube body, and the filter part can restore to the first working state from the second working state; the protruding part is located on the side, away from the conveying part, of the first opening, the diameter of the protruding part is larger than that of the first opening and smaller than that of the second opening, and when the filtering part is in the first working state, the guide wire can move in the filtering part, thrombus can be effectively filtered, and meanwhile it is guaranteed that the guide wire has an enough movement range; the vascular wall is prevented from being scratched by the filter.
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Description

technical field

[0001] The invention relates to the technical field of medical instruments, in particular to a thrombus filter. Background technique

[0002] Ischemic stroke is an important cause of adult disability and death worldwide, and atherosclerotic carotid artery stenosis accounts for about 20%-30% of the incidence of ischemic stroke. The intervention treatment of carotid artery stenosis is Important measures to prevent ischemic stroke. The conventional means are carotid artery dissection, balloon dilatation, thrombectomy, thrombus aspiration, and carotid artery stenting for the treatment of carotid artery stenosis. However, thrombus often falls off during the operation, and the fallen thrombus will flow to the downstream of the blood vessel with the blood flow, thereby causing intracranial cerebral vascular embolism and causing ischemic stroke. That is, cerebral vascular embolism is a relatively common complication in carotid artery interventional surgery, which i...

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Embodiment Construction

[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.

[0030] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two ...