Surgery – Instruments – Light application
Patent
1994-01-07
2000-12-19
Shay, David M.
Surgery
Instruments
Light application
606 3, 606 13, A61N 506
Patent
active
061622133
ABSTRACT:
A multiple wavelength laser system includes an active laser gain medium comprising metal vapor which, when excited, produces laser radiation at a plurality of wavelengths. A plurality of medically useable wavelengths are coaxially transmitted from the laser system for simultaneous use in a medical procedure. One of the wavelengths produced is closely matched to a light absorption peak of either water or Hemoglobin, and another wavelength is matched to the other of these light absorption peaks or a targeted photosensitive agent or chemical. The disclosed laser system can also include a laser gain medium comprising a plurality of metal vapors to produce the plurality of wavelengths desired. In preferred embodiments, the metal vapors can include barium, thulium, and/or samarium. A laser conversion device such as an OPO crystal may also be included to convert a portion of the radiation to one or more additional medically useable wavelengths.
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Cincinnati Sub-Zero Products, Inc.
Shay David M.
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