Laser surgical equipment

• US 4,564,012 A
• Filed: 09/22/1982
• Issued: 01/14/1986
• Est. Priority Date: 09/28/1981
• Status: Expired due to Fees

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Shimada, Tamotsu, Horiuchi, Hideyuki, Shinbo, Chiaki, Takatsuji, Masamoto
• Primary Examiner(s): NOT, DEFINED
• Assistant Examiner(s): Falk, Steven
• Application Number:
  US06/421,402
• Time in Patent Office: 1,210 Days
• Field of Search: 128/303.1, 128/395, 128/6, 128/396-398, 219/121 LB, 219/121 L, 219/121 LA, 219/121 LF, 219/121 ET, 219/121 EG, 250/252.1, 250/264-265
• US Class Current: 606/12
• CPC Class Codes: A61B 18/20 using laser
• CPC Class Codes: A61B 2017/00725 Calibration or performance testing
• CPC Class Codes: A61B 2018/00636 Sensing and controlling the application of energy
• CPC Class Codes: B23K 26/0096 Portable laser equipment, e.g. hand-held laser apparatus surgical laser instruments A61B18/20, Dental Lasers A61C1/0046, Hand-held laser dental apparatus for curing resins A61C19/004

Abstract

In a laser surgical equipment consisting of a laser oscillator oscillating a laser output, an optical waveguide connected to the laser oscillator and transmitting the laser output and a hand piece connected to the optical waveguide and radiating the laser output to a diseased part to be radiated, the improvement comprising a detector for detecting the laser output from the hand piece, a comparator for comparing the output of the detector with a predetermined value and a controller for controlling the laser oscillator by the output of the comparator and for setting the laser output of the hand piece to the predetermined value.

Claims

1. A laser surgical equipment comprising:

a laser oscillator for oscillating a laser output;

control means for controlling the laser output of said laser oscillator;

an optical waveguide connected to said laser oscillator and transmitting the laser output;

a hand piece connected to said optical waveguide and radiating the laser output to a diseased part to be radiated;

first detection means for detecting the laser output from said hand piece;

setting means for setting a desired laser output from said hand piece;

comparison means for comparing the output of said first detection means with an output of said setting means and for controlling said control means; and

memory means for storing the output of said comparison means, said memory means providing an output to said control means controlling the laser output of said laser oscillator during the period other than the period in which said first detection means detects the laser output.

2. The laser surgical equipment as defined in claim 1, wherein said first detection means consist of a case having a holding member for holding said hand piece while said hand piece is fitted to one end of said holding member, and a photoelectric conversion element disposed so as to receive the laser light while said hand piece is inserted into said holding member inside said case.

4. The laser surgical equipment as defined in claim 2 or 3, wherein said case is disposed on a control panel.

5. The laser surgical equipment as defined in claim 4, wherein said case is disposed detachably.

6. The laser surgical equipment as defined in claim 1 wherein said first detection means consist of a photoelectric conversion element disposed detachably on said hand piece.

7. The laser surgical equipment as defined in claim 1 which further includes second detection means for detecting the laser output of said laser oscillator and display means for displaying the output of said second detection means.

8. The laser surgical equipment as defined in claim 1, wherein said control means is responsive to the output of said comparison means for automatically controlling the laser output of said laser oscillator in accordance therewith.

9. The laser surgical equipment as defined in claim 1, wherein said control means is responsive to said comparison means for automatically controlling the laser output of said laser oscillator so that the output of said first detection measn becomes equal to the output of said setting means.

3. The laser surgical equipment as defined in claim 3 wherein means for detecting the insertion of said hand piece are disposed on said holding member, and the output of said insertion detecting means is used for detecting the period in which said first detection means detect the laser output.

10. A laser surgical equipment comprising:

a laser oscillator for oscillating a laser output;

control means for controlling the laser output of said oscillator;

an optical waveguide connected to said laser oscillator and transmitting the laser output;

a hand piece connected to said optical waveguide and radiating the laser output to a diseased part to be radiated;

first detection means for detecting the laser output from said hand piece;

setting means for setting a desired laser output from said hand piece;

comparison means for comparing the output of said first detection means with an output of said setting means and for controlling said control means;

second detection means for detecting the laser output of said laser oscillator;

level conversion means connected to said second detection means for converting the output of said second detection means into an output corresponding to the output of said first detection means; and

display means for displaying the output of said level conversion means.

11. The laser surgical equipment as defined in claim 10, which further includes change-over means for receiving the output of said first detection means and the output of said conversion means and applying either of the outputs to said comparison means and to said display means.

12. The laser surgical equipment as defined in claim 11, which further includes means for detecting the period in which said first detection means detect the laser output and the output of said period detecting means is used for controlling said change-over means.

13. The laser surgical equipment comprising:

a laser oscillator for oscillating a laser output;

control means for controlling the laser output of said laser oscillator;

an optical waveguide connected to said laser oscillator and transmitting the laser output;

a hand piece connected to said optical waveguide and radiating the laser output to a diseased part to be radiated;

first detection means for detecting the laser output from said hand piece;

setting means for setting a desired laser output from said hand piece;

comparison means for comparing the output of said first detection means with an output of said setting means and for controlling said control means so that the output of said first detection means becomes equal to the output of said setting means;

second detection means for detecting the laser output of said laser oscillator;

display means for displaying the output of said second detection means;

third detection means for detecting an oscillation current of said laser oscillator;

memory means for storing the outputs of said first detection means, said second detection and said third detection means; and

determination means for determining whether or not said laser surgical equipment operates normally, by analyzing the content of said memory means.

14. The laser surgical equipment as defined in claim 13, wherein said determination means are means for determining the normality and abnormality of said laser oscillator from the relation between the output of said third detection means and the output of said second detection means.

15. The laser surgical equipment as defined in claim 13 wherein said determination means are means for determining the normality and abnormality of said optical waveguide or said hand piece from the relation between the output of said first detection means and the output of said second detection means.