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公开(公告)号:AU5323494A
公开(公告)日:1994-04-26
申请号:AU5323494
申请日:1993-10-07
Applicant: SUMMIT TECHNOLOGY INC
Inventor: MULLER DAVID F , SACHAROFF ALEX C
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公开(公告)号:AU2276395A
公开(公告)日:1995-10-30
申请号:AU2276395
申请日:1995-04-07
Applicant: SUMMIT TECHNOLOGY INC
Inventor: MULLER DAVID F , SACHAROFF ALEX C , KLOPOTEK PETER J
Abstract: A method and system are described for performing photorefractive keratectomy procedure employing pulses of photoablative radiation to selectively ablate corneal tissue of a patient's eye in an ablation zone on the anterior corneal surface to produce a desired refractive correction in the corneal tissue. The method and system employ control of the effect of ocular fluid at the corneal surface so as to reduce the disturbance of such fluid on the desired ablation process while maintaining hydration of the corneal tissue. Controlling the average repetition rate of the radiation pulses applied to the corneal surface so as to reduce intrapulse fluid accumulation at the corneal surface without dehydrating the corneal tissue, selecting an increased fluence level of the pulse applied to the corneal surface to reduce the effect of fluid accumulation at the corneal surface, and applying evaporative energy to the site of incidence of a pulse of an ablative beam prior to incidence of said pulse at said site are shown as ways to effect this control. Application of the new method and system to wide area ablation techniques and to scanning techniques are described Reduction of irregularities when ablating large areas, e.g., grater than 5.5 cm is made possible in either case.
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公开(公告)号:AU3471693A
公开(公告)日:1993-08-03
申请号:AU3471693
申请日:1993-01-13
Applicant: SUMMIT TECHNOLOGY INC
Inventor: SACHAROFF ALEX C , HALUSKA DAVID W
Abstract: Apparatus and methods are disclosed for distributing and delivering laser radiation with substantially uniform intensity to multi-spatial locations. Laser radiation is directed into a fiber optic waveguide which homogenizes the spatial intensity of the laser beam via mode-mixing. The laser radiation is then coupled from the mode-mixing waveguide to multiple distribution fibers that are terminated at desired spatial locations, e.g., at the distal end of a surgical tool. The output from each of the multiple distribution fibers is laser radiation of substantially uniform intensity.
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公开(公告)号:WO9314432A3
公开(公告)日:2004-04-29
申请号:PCT/US9300297
申请日:1993-01-13
Applicant: SUMMIT TECHNOLOGY INC
Inventor: SACHAROFF ALEX C , HALUSKA DAVID W
CPC classification number: G02B27/0927 , A61B18/22 , G02B6/421 , G02B6/4296 , G02B27/09
Abstract: Apparatus and methods are disclosed for distributing and delivering laser radiation with substantially uniform intensity to multi-spatial locations. Laser radiation (14) is directed into a fiber optic waveguide (20) which homogenizes the spatial intensity of the laser beam via mode-mixing. The laser radiation is then coupled from the mode-mixing waveguide to multiple distribution fibers (26) that are terminated at desired spatial locations, e.g., at the distal end of a surgical tool (45). The output from each of the multiple distribution fibers is laser radiation of substantially uniform intensity.
Abstract translation: 公开了用于将基本均匀的强度的激光辐射分配和传送到多空间位置的装置和方法。 激光辐射(14)被引导到光纤波导(20)中,其通过模式混合使激光束的空间强度均匀化。 然后将激光辐射从模式混合波导耦合到多个分配纤维(26),其在所需的空间位置例如在外科手术工具(45)的远端处终止。 来自多个分布光纤中的每一个的输出是强度基本均匀的激光辐射。
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公开(公告)号:EP0741545A4
公开(公告)日:1996-06-20
申请号:EP93923298
申请日:1993-10-07
Applicant: SUMMIT TECHNOLOGY INC
Inventor: MULLER DAVID F , SACHAROFF ALEX C
CPC classification number: A61F9/00821 , A61F2009/00844 , A61F2009/00853 , A61F2009/00872
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