Drug balloon and use method thereof

Abstract

The invention relates to the technical field of medical instruments, and discloses a medicine balloon and a using method thereof. The medicine balloon comprises a balloon catheter which comprises a balloon body section and liquid passing pipes, wherein two ends of the balloon body section are respectively connected with a liquid passing pipe; the inner cavity of the balloon body section communicates with the liquid passing pipes to form a liquid passing cavity; a blood flowing cavity allowing blood to pass through is also arranged on the surface of the balloon body section and is defined by the side wall of the liquid passing cavity; and micropores for a drug microsphere preparation to pass through are distributed on the outer arc surface of the balloon body section. When the medicine balloon is pressurized, due to the fact that the blood flowing cavity can allow a blood flow in a blood vessel to pass through, sufficient downstream blood supply can be guaranteed, and myocardial ischemia caused by blood vessel plugging is avoided; meanwhile, sufficient contact action time between the surface of a balloon and the inner wall of a blood vessel is guaranteed, so the adhesion effect of adrug on a target blood vessel wall is improved; and the drug microsphere preparation is released to the blood vessel wall through arrangement of the micropores in the balloon body section, so the drug can be more stably and effectively retained on the blood vessel wall and stably released for a long time.

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

Images