Laser catheter

专利名称：Laser catheter

发明人：Richard S. Stack,Myron Wolbarsht申请号：US07/066346申请日：19870625公开号：US04854315A公开日：19890808

摘要：A laser catheter for removing athereosclerotic plaque. The distal end of thelaser catheter, in addition to including a distal port for dye injection and preferably asteerable or at least movable guide wire, includes a smoothly tapered forward face witha sapphire, ruby, diamond or the like window for directing a mid-infrared laser beamcentripedally toward a targeted plaque structure. A mid-infrared laser beam, preferablya erbium YAG or HF laser, is conducted through the catheter to abate plaque. A secondcatheter, substantially identical to the first catheter can slidably disposed about the firstcatheter so as to provide a tiered laser catheter. Thus, the smaller catheter can targetplaque in the most constricted regions of the vessel and can then be advanced into thesmaller diameter region while bringing the second, larger catheter into engagement witha larger diameter packed portion thereby enable the irradiation, and ablation of thesame.

申请人：STACK; RICHARD S.,WOLBARSHT; MYRON

代理机构：Cushman, Darby & Cushman

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