Clot retrieving support

Abstract

The invention provides a clot retrieving g support, comprising: a delivery rod; a support body connected with the delivery rod and forming a network woven with wire material. The support body includes a support body proximal end, a support body distal end, and a support body middle part for connecting the support body proximal end and the support body distal end, wherein the diameter of the support body middle part is less than that of the support body proximal end and that of the support body distal end, and the support body proximal end is in open wedge shape. Therefore, the clot retrieving support according to an embodiment of the invention allows blood clots to be clamped in the middle of the support more easily; during clot retrieving, the distal end and proximal end of the support can cover small clots peeled off, so that the problem is avoided that the small clots block distal or proximal vessels. The middle mesh of the support body is larger than end meshes of the support body, the support body middle part has small diameter, space is exactly reserved for the blood clots clamped to the support body, the support body middle part has moderate radial force, and vascular intima is never damaged during pulling of the blood clots.

Description

technical field [0001] The invention relates to a medical device, in particular to a thrombus-retrieving bracket. Background technique [0002] In human blood vessels, especially in the supply vessels in the region of the coronary arteries, there are often obstructions such as deposits, atherosclerotic plaques, clots, etc. These obstructions can block or interrupt blood flow. The above-mentioned obstructions in the vessels supplying the area of ​​the coronary arteries may lead to serious sequelae such as infarction. Rapid removal of these obstructions is an essential therapeutic step in the treatment of such patients. Stroke caused by thrombosis in cerebral vessels is the most serious refractory disease that endangers human health and life safety. According to statistics, there are 3 million stroke patients in China every year, and 1.2 million stroke patients die every year. For patients with cerebral apoplexy who are sent to the hospital in time, the conventional treatme...

AI Technical Summary

Problems solved by technology

[0009] 1) The common feature of these stents is that the stent has a uniform grid structure, and the main part of the stent is over-extruded after the main body captures the thrombus, so that the radial force of the main part is too large, and the intima of the vessel is easily damaged when the thrombus is pulled;

[0010] 2) The common feature of these stents is that the entire length and diameter of the stent are consistent. When the thrombus is captured and the stent is retracted, the small thrombus is easy to fall off and flow to the distal small blood vessel or the proximal blood vessel, which greatly increases the difficulty of the operation and even endangers the life of the patient.

[0011] 3) Only the distal and proximal ends of the thrombus stent are visible under X-rays, but the main body of the stent is invisible. When the stent passes through a vessel with a large bending radius, the doctor cannot judge whether the stent has been bent (in this case Continuing to pull the stent down will cause serious damage to the cerebrovascular, and even endanger the life of the patient);

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