| 摘要 |
This invention concerns a lateral-irradiation type laser irradiation device which is capable of effectively irradiating a target site, particularly at a considerable deth, with a laser beam while infallibly and easily preventing normal tissue from injury/and a method for curing prostate gland by the use of the laser irradiation device.The laser irradiating device 1 moves either or both of the laser probes 3, 4 having the reflecting mirrors 32, 42 provided at the distal end parts of the optical fibers 31, 41 in the longitudinal direction of the sheath 2 so as to alter the interval between the reflecting mirrors 32, 42 and move the position at which the reflected laser beams are concentrated (condensed), namely the target position 5 moves, in the direction perpendicular to the longitudinal axis of the sheath 2.The method for the therapy of the prostate gland which comprises inserting the laser probes 3, 4 through the urogenital canal, suitably moving the target position 5 at which the laser beams are concentrated, irradiating the ailing site with the laser beams, and curing the ailing site by degeneration or necrosis.
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