A drug balloon and its application method

Abstract

The invention relates to the technical field of medical devices, and discloses a medicine balloon and a use method thereof. The drug balloon includes a balloon catheter, the balloon catheter includes a balloon body segment and a fluid passage, the two ends of the balloon body segment are respectively connected with the fluid passage, and the inner cavity of the balloon body segment is communicated with the fluid passage to form a fluid passage. Liquid cavity; the surface of the balloon body segment is also provided with a blood flow cavity for blood to pass through, and the blood flow cavity is formed by the side wall of the liquid passage cavity; hole. When the pharmaceutical balloon of the present invention is inflated, since the blood flow cavity can allow the blood flow in the blood vessel to pass through, the downstream blood supply can be ensured, and myocardial ischemia caused by blood vessel occlusion can be avoided; The inner wall has sufficient contact time, which improves the adhesion effect of the drug on the target blood vessel wall; by setting micropores in the balloon body section to release the drug microsphere preparation to the blood vessel wall, the drug can be more stably and effectively retained on the blood vessel wall , long-term stable release.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a drug balloon and a method for using the same. Background technique [0002] Cardiovascular and cerebrovascular diseases have become the number one cause of death in the world. At present, the treatment methods for ischemic heart disease mainly include the following types: drug-based basic treatment, coronary artery bypass grafting-based surgical treatment, coronary stent-based interventional treatment, and drug-balloon-based interventional treatment. The above-mentioned several treatment methods have achieved obvious effects in the treatment of coronary artery stenosis, but each still has some significant problems. [0003] Among them, coronary stent implantation is to deliver the stent system to the target area through puncture and intervention, and the balloon expands to release the stent, open the narrowed and diseased blood vessel, restore the blood supply, and tre...

AI Technical Summary

Problems solved by technology

Therefore, for traditional drug balloons, most of the drugs are lost during the operation, and the amount of drugs actually acting on the vessel wall is small, and the effective drug release rate is very low, which affects the therapeutic effect.

Finally, the drug coating that falls off during the expansion and release of the traditional balloon is not soluble in blood, and will exist in the form of large particles, and as the blood flows to the small distal blood vessels, there is a great risk of occlusion of the distal blood vessels

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