Development of novel photoreaction-driven percutaneous devices in cardiovascular field

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The development of the devices and techniques for percutaneous treatment as a low invasion therapy in cardiovascular field are important especially in societies with many elderly people. Among them we have developed are as follows ; 1) visible light-induced tissue adhesive glue where styrenated gelatin and/or albumin-containing aqueous solutions with camphorquinone were gelated upon a few minutes of visible light irradiation, 2) embolic material for cerebral arteriovenous malformations and for local delivery of cytokines, 3) a novel high functional covered stent with micropore and drug delivery performance and hydrogel-coated stents both for prevention of restenosis and additionally a gene delivery device, and 4) the high performance balloon catheters with three functions of dilation of blood vessels, blood circulation and local delivery of drugs, all of which were driven by photochemistry. In addition, our efforts are also directed to application of gene therapy devices. We are pioneers in the development of these technologies and these techniques that will become the central in treatment of cardiovascular diseases.