Contact laser delivery system

Details Contact laser delivery system Contact laser delivery system

1992-06-23

1994-04-05

Shay, David M.

Surgery

Instruments

Light application

606 2, 606 17, A61N 506

Patent

active

053000668

ABSTRACT:
A method and apparatus for minimizing damage to an optical fiber used as part of a laser radiation delivery system are disclosed. The apparatus includes the use of a spacer positioned adjacent the tip of the fiber to minimize the impact on the fiber tip of debris and vapor generated by exposure of a tissue target to high energy radiation. The end of the apparatus is configured to vent debris and vapor from the end of the tip to reduce damage. The fiber tip may also be annealed to enhance its resistance to damage. The buffer material may also be stripped from the delivery end of the fiber so that the inner diameter of the outer support can be narrowed. An epoxy resin is injected into the space between the uncoated fiber and the support to stabilize the fiber and prevent it from bending. The delivery end of the fiber can also be enlarged to shield the remainder of the fiber from debris and vapor.

REFERENCES:
patent: 3693623 (1972-09-01), Harte et al.
patent: 3843865 (1974-10-01), Nath
patent: 4519390 (1985-05-01), Horne
patent: 4576177 (1986-03-01), Webster, Jr.
patent: 4660925 (1987-04-01), McCaughan, Jr.
patent: 4803460 (1989-05-01), Goldenberg
patent: 4819630 (1989-04-01), DeHart
patent: 4917084 (1990-04-01), Sinofsky
patent: 4950266 (1990-08-01), Sinofsky

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