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1. 发明授权

US5198926A Optics for medical laser 失效
标题翻译：医用激光光学
公开(公告)号：US5198926A
公开(公告)日：1993-03-30
申请号：US644074
申请日：1991-01-18
申请人： Andrew I. Sheinis , Colette Cozean , John F. Forkner , M. John Colles
发明人： Andrew I. Sheinis , Colette Cozean , John F. Forkner , M. John Colles
IPC分类号： A61B18/20 , A61B19/00
CPC分类号： A61B18/201 , A61B34/72 , Y10T292/57
摘要： An optical system for use in a medical laser apparatus comprising an achromat having optical elements selected to cause two substantially different wavelengths, one visible and one infrared, to focus at a common focal point. The achromat comprises a negative lens and a doublet lens formed of a positive bi-convex lens and a negative meniscus lens. The materials of the two lenses which form the doublet have substantially different dispersions and indices of refraction and are chosen to cause a visible helium neon beam and an infrared carbon dioxide beam to focus at the same point. In the preferred embodiment of the present invention, the negative lens is made of zinc selenide, the bi-convex lens of the doublet is made of potassium chloride, and the negative meniscus is made of zinc selenide. The optical system of the present invention can be mounted in a micromanipulator for use in laser surgery. The visible helium neon beam is used as an aiming beam to establish a spot at which the carbon dioxide beam also focuses. The carbon dioxide beam is then employed to vaporize biotic material. A distal end of an articulated arm may couple with the micromanipulator to direct the carbon dioxide beam from the laser through a waveguide and into the micromanipulator. Another aspect of the invention includes introducing the aiming beam into the waveguide through a dichroic mirror positioned in a knuckle joint of the articulated arm. In one embodiment, a laser diode generates the visible light of the aiming beam, and is disposed proximate to the distal end of the articulated arm.
摘要翻译：一种用于医疗激光装置的光学系统，包括具有被选择成使两个基本不同的波长的光学元件的一个消色差，一个可见光和一个红外线聚焦在公共焦点处。消色差包括负透镜和由正双凸透镜和负弯月形透镜形成的双透镜。形成双峰的两个透镜的材料具有基本不同的分散度和折射率，并且被选择为使可见的氦氖光束和红外二氧化碳光束在同一点聚焦。在本发明的优选实施方案中，负透镜由硒化锌制成，双峰的双凸透镜由氯化钾制成，负弯液面由硒化锌制成。本发明的光学系统可以安装在用于激光手术的显微操纵器中。可见氦氖光束用作瞄准光束，以建立二氧化碳光束也聚焦的点。然后使用二氧化碳束来蒸发生物材料。铰接臂的远端可以与显微操纵器耦合以将来自激光器的二氧化碳束引导通过波导并进入显微操纵器。本发明的另一方面包括通过位于关节臂的转向节中的分色镜将瞄准光束引入到波导中。在一个实施例中，激光二极管产生瞄准光束的可见光，并且靠近关节臂的远端设置。

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