B - Operations – Transporting – 23 – K
Patent
B - Operations, Transporting
23
K
327/1.2
B23K 26/02 (2006.01)
Patent
CA 1272764
ABSTRACT OF THE DISCLOSURE A control system for an optical fiber laser power delivery system wherein the system employs a tip assembly for the optical fibers which provide focusing and beam divergence, mechanical protection for the optical fibers, and in addition functions as the source of a condition response signal userful in monitoring and controll the system operation. The tip assembly utilizes a synthetic sapphire lens or window having incident laser radiation and temperature dependent fluorescing property useful in generating a signal utilized in a feedback control system for the laser system. The improved tip assembly accordingly has application as an optical fiber shield as well as a signal source for the control and monitor portion of the laser system. An apparatus is also disclosed for advancing the optical fiber in a laser enhanced transluminal angioplasty catheter, and for controlling the introduction of laser energy into the fiber. The device includes a catheter and a fiber advance housing. The optical fiber runs through the catheter and housing, and is optically connected to a source of laser energy. A fiber advance assembly, mounted in the housing, reciprocates to advance and tract the fiber relative to the catheter and housing. An actuator member is provided inside the housing to slide independently of the fiber advance assembly. A switching means, provided in the housing, is closed to enable introduction of laser energy into the optical fiber whenever the fiber advance assembly is disposed forwardly of a select position relative to the actuator member. The switching means is open, thereby preventing introduction of laser energy into the fiber, whenever the fiber advance assembly is disposed rearwardly of the select position. The actuator position is adjustable through a zero adjust slide, connected to the actuator and slidable relative to the housing.
540431
Kauphusman James V.
Kosa Nadhir B.
Neilson Bruce H.
Frayne & Company Robert
Gv Medical Inc.
Kauphusman James V.
Kosa Nadhir B.
Neilson Bruce H.
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