发明名称 |
Apparatus for laser treatment of body lumens |
摘要 |
A laser microsurgical method and apparatus are disclosed for safely treating occluded body lumens with laser energy. The disclosed method involves the use of pulsed laser energy from an argon-ion laser (62) to destroy the tissue of luminal occlusions, such as atheromatous plaque and the like, with substantially no thermal necrosis of the surrounding tissue. A flexible catheter and associated laser microsurgical system is also disclosed which provides for aiming of the fibers (18a-18d) to transmit the laser beam at the distal end of the catheter and rotational positioning of the catheter to permit coverage of virtually the entire cross-sectional area of the lumen. A lens system (46-48) at the distal end of each laser fiber minimizes beam divergence and directs the beam toward the central axis of the catheter. A further embodiment of the catheter of the invention provides an array of laser fibers (118) which are optically scanned (66) with laser energy to cover the cross-sectional area of the lumen. The system is designed to minimize the possibility of damage to or perforation of the surrounding tissue of the lumen. |
申请公布号 |
EP0217165(B1) |
申请公布日期 |
1996.01.03 |
申请号 |
EP19860112166 |
申请日期 |
1986.09.03 |
申请人 |
PILLCO LIMITED PARTNERSHIP |
发明人 |
FOX, KENNETH R.;COSTER, A. ARTHUR |
分类号 |
A61B18/00;A61B17/00;A61B17/22;A61B18/20;A61B18/24;A61B19/00 |
主分类号 |
A61B18/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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