Thrombus resection device

Abstract

The invention provides a thrombus resection device. The thrombus resection device comprises a catheter and a resection assembly, wherein the resection assembly comprises a knife net, a knife head, a transmission shaft and a power source; the knife net is fixed to the end face of the catheter; a hollowed-out part is arranged on the knife net; the knife head is connected to one end of the transmission shaft, and the power source is connected to the other end of the transmission shaft; the tool bit and at least part of the transmission shaft are located in the catheter, and the power source drives the knife head to rotate in the catheter through the transmission shaft; the knife head is a semi-circular-ring-like body, the surface, close to the knife net, of the knife head is the first surface, and the first edge and the third edge of the knife head are connected with the two ends of the second edge and the fourth edge respectively; and the knife head and the knife net form a cutting structure, the cutting structure comprises a first cutting edge and a second cutting edge, the first cutting edge is formed by the first edge and the third edge of the knife head, and the second cutting edge is located on the knife net. The thrombus resection device has the advantages of good thrombus resection effect and the like.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to a thrombectomy device. Background technique [0002] Thrombus is a small block formed by blood flow on the surface of the peeled or repaired part of the inner surface of the blood vessel in the cardiovascular system. It is composed of insoluble fibrin, deposited platelets, accumulated white blood cells and trapped red blood cells. Thrombus causes reduced blood flow or interruption of blood supply in the brain, cerebral ischemia and hypoxia lead to softening and necrosis, and focal nervous system symptoms, leading to atherosclerotic brain or myocardial infarction. When a thrombus occurs, the activities of the nerve center and important physiological functions are threatened due to local tissue blockage and ischemia. If the blockage in the blood vessel cannot be removed in time to make the blood flow smooth, the brain tissue in the ischemic area will function accordingly. Impair...

AI Technical Summary

Problems solved by technology

However, at present, medical treatment commonly used in clinical practice cannot quickly remove thrombus and relieve blockage. The volume expansion, anticoagulant, and thrombolytic therapy adopted not only have poor efficacy, but also have a limited treatment time window, and are even prone to serious consequences of tissue hemorrhage.

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