A - Human Necessities – 61 – N
Patent
A - Human Necessities
61
N
326/3
A61N 5/06 (2006.01) A61B 5/00 (2006.01) A61B 10/00 (2006.01) A61B 18/22 (2006.01) A61B 18/20 (2006.01)
Patent
CA 1164952
TITLE HUMAN AND ANIMAL TISSUE PHOTORADIATION SYSTEM ABSTRACT A tissue photoradiation system uses a hematoporphyrin or hematoporphyrin derivative dye in tissue to be irradiated and arranges a xenon ion laser 10 for simultaneous lasing. Deep blue light is produced at wavelengths of about 406-427 nanometers and red light at a wavelength of about 627 nanometers by using partially transmitting mirrors arranged at opposite ends of the laser resonator. One of said mirrors has a coating that substantially reflects blue light and partially transmits red light to produce a red light output, and the coating of the other mirror substantially reflects red light and partially transmits blue light producing a blue light output. The blue light output is transmitted to a diagnostic tissue irradiator to illuminate the tissue and diagnose its condition. A trans- mission system using an optical fiber delivers the red light to the tissue for treatment purposes. The red light is radiated out the side of an optical fiber region to be directed into large area of tissue. In the foregoing manner, the invention provides the means whereby a single laser can simultaneously provide both frequencies required fox diagnosis and treatment, whilst maintaining the necessary level of convenience and economy for practical application.
372142
Borden Ladner Gervais Llp
Clark William G.
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