Coronary drug-coated balloon

Abstract

The invention discloses a coronary drug-coated balloon. The balloon includes a balloon body; the left side of the balloon body is provided with a leading-in head; a reference column is arranged in theinner cavity of the leading-in head; the middle part of the reference column is provided with a compensation cabin; the middle part on the outer side of the balloon body is provided with a coating; fine-tuning shaft is in penetrated connection with the inner cavity of the reference column; supporting pieces equidistantly penetrate the outer ring of the compensation cabin; the ends, located on theouter side of the compensation cabin, of the supporting pieces are fixedly welded with supporting arcs; the ends, located in the inner caivty of the compensation cabin, of the supporting pieces are fixedly welded with fine-tuning tiles; and the outer ring upper line, located in the inner cavity of the compensation cabin, of the fine-tuning shaft is equidistantly and fixedly welded with tighteningblocks. Through the design of one-way cyclic operation, the contact area of the balloon and the coating with the internal of a human body can be controlled, the expanded size of the balloon cannot beeasily changed even affected by the pharmacology of the inner wall, so that the contact area of the coating cannot be influenced, namely, the problems of the change of coating area of the drug coating cannot occur.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and more specifically relates to a coronary drug-coated balloon. Background technique [0002] Arterial stenosis has always been a kind of disease that plagues human beings. In order to cure this kind of disease, medical treatment methods such as bare balloon, bare stent, and drug-eluting stent have been used successively. However, the aforementioned treatment options have different defects. So the drug-coated balloon catheter came into being. It not only creates a channel for blood circulation through balloon expansion, but also the drug loaded on the balloon can effectively inhibit the proliferation of smooth muscle cells and prevent vascular restenosis. When using drug-coated balloon Before dilating the lesion, it is necessary to pre-expand the lesion with an ordinary drug-free balloon, so that the drug-coated balloon can enter the lesion smoothly. At the same time, the lesion is pre-...

AI Technical Summary

Problems solved by technology

At the same time, the lesion is pre-expanded by the ordinary balloon, which increases the area where the inner wall of the blood vessel in the lesion can contact the surface of the drug-coated balloon, increases the amount of drug transferred to the blood vessel wall after the expansion of the drug-coated balloon, and improves the Therapeutic effect, however, pre-dilation requires the use of additional ordinary balloons, which not only increases the complexity of the operation, prolongs the operation time, but also increases the economic burden of the patient. At the same time, even after the pre-dilation, drug coating is still unavoidable The loss caused by the high-speed flow of blood washing the balloon during the delivery process, and when it is in use, the balloon is easily affected by the internal pressure of the human body during the expansion process, and the contraction and reset actions often occur, causing secondary damage to the patient. injury, increased patient suffering

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