Drug-loading balloon capable of releasing drugs quickly

Abstract

The invention relates to a minimally-invasive intervention medical instrument, particularly to a drug-loading balloon catheter used for quickly releasing drugs at a focus part in a blood vessel. The drug-loading balloon catheter comprises a drug-loading balloon body, a catheter body, developing rings and a connecting piece, wherein the drug-loading balloon body comprises round or rectangular drug storage grooves which are arranged spirally or in an arrayed manner; the balloon body and the catheter body are connected through laser welding; the two developing rings are arranged on the catheter body and can mark out the straight section of the balloon body; the connecting piece is a 6% standard Luer taper; when the balloon body is full, the drug storage grooves bulge outwards under the effect of internal pressure, and the drugs directly and quickly act on the focus part. The drug-loading balloon catheter has the benefits as follows: the balloon catheter can quickly release the drugs at the stenosis part while expanding the stenosis part of the blood vessel, so that blood is prevented from gathering at the diseased part, and the probability of restenosis is greatly decreased; besides, the drug-loading balloon catheter has the advantages of simple structure, convenience in operation, high drug-loading capacity and the like.

Description

technical field [0001] The invention relates to a minimally invasive interventional medical device, in particular to a drug-loaded balloon catheter used for rapidly releasing drugs in a lesion in a blood vessel. Background technique [0002] The emergence of interventional therapy for coronary heart disease has created a new era of revascularization therapy for coronary heart disease, and postoperative restenosis is one of the main challenges it faces. The occurrence of restenosis not only leads to the recurrence of angina pectoris symptoms, but also requires revascularization to relieve symptoms, and can also cause acute coronary syndrome in some patients. Peripheral vascular disease, its incidence has increased significantly in recent years, such as arteriosclerotic obliterans, arteriovenous thrombosis, aneurysm, etc.; peripheral vascular disease has a high disability rate, and professional treatment technology is booming; At present, balloon catheters and intravascular s...

AI Technical Summary

Problems solved by technology

[0003] The application of stents reduces the rate of restenosis, but it brings another difficult problem: restenosis in the stent

The preparation method of the drug balloon catheter involved in the above-mentioned patent is complicated, and because the laser is used to etch the surface of the balloon, the balloon will be damaged and the pressure of the balloon will be reduced; and because the adsorption force between the balloon surface and the drug is still strong Low physical effect, can not change the shortcomings of easy drug shedding and small drug loading

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