发明名称 |
INFRAROT LASER-KATHETERGERAET. |
摘要 |
Laser energy produced by a laser operating in the mid-infrared region (approximately 2 micrometers) is delivered by an optical fiber in a catheter to a surgical site for biological tissue removal and repair. Disclosed laser sources which have an output wavelength in this region include: Holmium-doped Yttrium Aluminum Garnet (Ho:YAG) ,Holmium-doped Yttrium Lithium Fluoride (Ho:YLF) , Erbium-doped YAG, Erbium-doped YLF and Thulium-doped YAG. For tissue removal, the lasers are operated with relatively long pulses at energy levels of approximately 1 joule per pulse. For tissue repair, the lasers are operated in a continuous wave mode at low power. Laser output energy is applied to a silica-based optical fiber which has been specially purified to reduce the hydroxyl-ion concentration to a low level. The catheter may be comprised of a single optical fiber or a plurality of optical fibers arranged to give overlapping output patterns for large area coverage. |
申请公布号 |
DE3686621(D1) |
申请公布日期 |
1992.10.08 |
申请号 |
DE19863686621 |
申请日期 |
1986.05.27 |
申请人 |
C.R. BARD, INC., MURRAY HILL, N.J., US |
发明人 |
SINOFSKY, EDWARD, READING MASSACHUSETTS, US |
分类号 |
A61B18/20;A61B18/24;A61B18/28;A61B19/00;G02B6/24;G02B6/38;G02B6/42 |
主分类号 |
A61B18/20 |
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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