Laser surgical unit

Details Laser surgical unit Laser surgical unit

1992-08-26

1994-09-20

Pellegrino, Stephen C.

Surgery

Instruments

Light application

606 16, 606 28, 607 89, A61B 1736

Patent

active

053485521

ABSTRACT:
In a laser surgical unit having a contact laser probe (1), a hydroxyl group (13) is included in the contact laser probe so that a laser beam is partially absorbed by the hydroxyl group (13) to heat the contact laser probe (1) for transmission to living tissue. Consequently, a coagulation layer is formed in the living tissue along with vaporization and incision. At least a part of the contact laser probe (1) is made of a material which contains the hydroxyl group (13) generally in an amount of between 0.5 and 10 ppm. Alternatively, the hydroxyl group (13) may be included only in a portion adjacent to a surface of a tip portion of the probe (1). As a further alternative, a coating film containing the hydroxyl group (13) may be attached to the tip of the contact laser probe (1). The laser beam preferably has a wavelength between 1.5 and 15 .mu.m. For example, use is made of an Er:YAG laser beam, a Ho:YAG laser beam, or a CO.sub.2 laser beam. The laser surgical unit of the above-mentioned structure is excellent in manipulatability, capable of safely and uniformly cutting living tissue, and capable of successively performing hemostasis.

REFERENCES:
patent: 4736743 (1988-04-01), Daikuzono
patent: 4832979 (1989-05-01), Hoshino
patent: 4917084 (1990-04-01), Sinofsky

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