Surgery – Instruments – Light application
Patent
1994-01-14
1996-09-24
Shay, David M.
Surgery
Instruments
Light application
606 10, 606 13, A61N 506
Patent
active
055586660
ABSTRACT:
A handpiece for use in delivering the output beam of a laser to the surface of a patient's skin for performing a dermatological procedure. In a first and second embodiment of the present invention, the handpiece provides a highly collimated beam of a fixed, non-variable spot size which is largely insensitive to movement of the handpiece over a range of working positions. In a third embodiment the handpiece provides a highly collimated and well defined focused laser spot of variable size where for a selected spot size, the size is largely insensitive to movement of the handpiece over a range of working positions. In all of the embodiments, the highly collimated laser beam permits the surgeon performing the procedure to move the handpiece over a range of positions without significantly defocusing or altering the spot size of the beam.
REFERENCES:
patent: 3547125 (1970-12-01), Tagnon
patent: 3703176 (1972-11-01), Vassiliadis et al.
patent: 3982541 (1976-09-01), L'Esperance, Jr.
patent: 4211229 (1980-07-01), Wurster
patent: 4388924 (1983-06-01), Weissman et al.
patent: 4473074 (1984-09-01), Vassiliadis
Arnett Michael
Dewey David A.
Koop Dale E.
Trost David
Coherent Inc.
Shay David M.
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