An intravascular support catheter with a rotary cutting tip

Abstract

The invention discloses an intravascular support catheter with a rotary cutting tip, which includes a joint, a tube body, and a rotary cutting tip. The rotary cutting tip is provided with a rotary cutting metal knife, and the metal knife is partially embedded in the rotary cutting tip. The cutting edge of the metal knife is exposed outside the rotary cutting tip, and the metal knife is visible under X-ray. The intravascular support catheter with a rotary cutting tip in the present invention can assist and support the guide wire to open vascular lesions, and at the same time can realize functions such as guide wire exchange and perfusion. The support catheter is guided into the blood vessel by the guide wire, and when it reaches the occlusive lesion, it provides support for the guide wire and assists the guide wire to pass through the occlusive lesion in the blood vessel together; during the operation, by rotating the catheter joint, it is easier to incise the inside of the blood vessel Occlusive lesions.

Description

technical field [0001] The invention relates to an intravascular support catheter, in particular to an intravascular support catheter with a rotary cutting tip. Background technique [0002] Lower extremity arteriosclerosis obliterans (PAD) is due to the formation of lower extremity atherosclerotic plaques, causing lower extremity arterial stenosis and occlusion, leading to chronic ischemia of the limbs. With the improvement of the overall living standard of the society and the aging of the population, the incidence of lower extremity arteriosclerosis obliterans increases year by year. Symptomatic PAD patients account for 4.5% of the population aged 55 to 74, and approximately 20% of older adults have symptomatic or asymptomatic PAD (German Association of Angiology and Association of Vascular Medicine). [0003] Epidemiological surveys have shown that smoking, diabetes, hyperlipidemia, hypertension, hyperhomocysteinemia, hypercoagulability, increased blood adhesion and adva...

AI Technical Summary

Problems solved by technology

[0005] The treatment of arterial occlusive diseases of the lower extremities has always been difficult, especially for the treatment of occluded blood vessels. The traditional treatment method is usually to use a guide wire alone to open it. When the lesion occurs, due to insufficient support, the head end is prone to discount, bending, twisting, etc., resulting in treatment failure

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