Laser irradiation apparatus

• US 4,573,465 A
• Filed: 11/16/1982
• Issued: 03/04/1986
• Est. Priority Date: 11/19/1981
• Status: Expired due to Term

• Current Assignee: Nippon Infrared Industies Co., Ltd.
• Original Assignee: Nippon Infrared Industies Co., Ltd.
• Inventors: Sugiyama, Seiji, Kaneda, Michihiro, Suenaga, Norihiro, Suenaga, Nobuyuki
• Primary Examiner(s): Cohen, Lee S.
• Application Number:
  US06/442,082
• Time in Patent Office: 1,204 Days
• Field of Search: 128/303.1, 128/395-398, 219/121 LS, 372/23, 372/25
• US Class Current: 606/11
• CPC Class Codes: A61B 18/20 using laser
• CPC Class Codes: A61B 2018/2065 Multiwave; Wavelength mixing, e.g. using four or more wavelengths
• CPC Class Codes: A61B 2018/207 mixing two wavelengths
• CPC Class Codes: B23K 26/0604 by a combination of beams
• CPC Class Codes: B23K 26/0613 having a common axis B23K26/0619 takes precedence
• CPC Class Codes: H01S 3/10 Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
• CPC Class Codes: H01S 3/2383 Parallel arrangements
• CPC Class Codes: H01S 3/2391 emitting at different wavelengths

Abstract

A laser irradiating apparatus which irradiates a plurality of working laser beams having different wave-lengths to obtain complex effects in medical treatments. The outputs of the laser beams are controlled, and the output ratio of the laser beam is selectively set for various irradiating conditions so that the medical treatments for various living organisms can be carried out under the most desirable irradiating condition.

Claims

1. A laser irradiating apparatus adapted for simultaneously or selectively irradiating laser beams on an object, comprising:

a plurality of laser sources each outputting laser beams of different wave-length;

optical means for co-axially overlapping the laser beams;

light guide means for transmitting the overlapped laser beams respectively to a desired portion of the object to be irradiated;

a plurality of laser output variation means, connected individually and respectively to each of the laser sources, for introducing a high voltage to each of the laser sources;

a plurality of laser output variation signal means, responsive to input signals, for controlling respective of the laser output variation means;

mixing ratio setting means for providing input signals to the laser output variation signal means to vary the output ratio of the plurality of laser sources; and

laser output setting means, connected to the mixing ratio setting means, for controlling said mixing ratio setting means to thereby set the outputs of the laser sources.

2. A laser irradiating apparatus according to claim 1, in which the plurality of laser sources comprises:

a first laser source for outputting a first laser beam adapted to be effective primarily for incision of said object, and

a second laser source for outputting a second laser beam adapted to be effective primarily for solidification of said object, wherein

the mixing ratio setting means divides the signal output from one output setting means into two signals in a desired ratio and outputs said two signals respectively to ones of said laser output variation signal means.

3. A laser irradiating apparatus according to claim 1, the plurality of laser sources comprising:

a first laser source for outputting a first laser beam adapted to be effective mainly for incision of said object,

a second laser source for outputting a second laser beam adapted to be effective mainly for solidification of said object,

the output setting means comprising a first output setting means corresponding to the first laser source and a second output setting means corresponding to the second laser source, wherein

the mixing ratio setting means receives signals from each of the first and second output setting means and converts them in a desired ratio to output them respectively to one of the laser output variation signal means.