Patent US4564012A successfully refreshed from Google Patents.
← Back to Patent Explorer
US4564012A Expired / Lapsed US ⏱️ 0.0 years remaining

Laser surgical equipment

Assignee: Hitachi Ltd
•
Filing: 1982-09-22
•
Granted: 1986-01-14
•
Expires: 2002-09-22
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

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.

Inventors

  • 👤 Tamotsu Shimada
  • 👤 Chiaki Shinbo
  • 👤 Hideyuki Horiuchi
  • 👤 Masamoto Takatsuji

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 20:28
CPC Classifications
B; B23; B23K; B23K26/00; B23K26/0096; A; A61; A61B; A61B18/00; A61B18/18; A61B18/20; A61B17/00; A61B2017/00681; A61B2017/00725; A61B2018/00636

Claims Analysis

Total Claims: 18
Claim 1
Independent Claim 151 words
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.
Claim 2
Dependent Claim 151 words
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.
Claim 3
Dependent Claim 66 words
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.
Claim 4
Dependent Claim 49 words
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.
Claim 5
Dependent Claim 20 words
The laser surgical equipment as defined in claim 2 or 3, wherein said case is disposed on a control panel.
Claim 6
Dependent Claim 15 words
The laser surgical equipment as defined in claim 4, wherein said case is disposed detachably.
Claim 7
Dependent Claim 26 words
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.
Claim 8
Dependent Claim 36 words
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.
Claim 9
Dependent Claim 35 words
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.
Claim 10
Dependent Claim 47 words
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.
Claim 11
Dependent Claim 158 words
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.
Claim 12
Dependent Claim 158 words
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.
Claim 13
Dependent Claim 45 words
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.
Claim 14
Dependent Claim 42 words
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.
Claim 15
Dependent Claim 199 words
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.
Claim 16
Dependent Claim 199 words
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.
Claim 17
Dependent Claim 44 words
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.
Claim 18
Dependent Claim 48 words
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.

References Cited (Backward Citations)

US3703176A Cited
GB1579601A Cited
DE2832847A1 Cited
US4378492A Cited
US4316467A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1989-01-13 1989-07-15 1990-01-14 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1993-01-13 1993-07-15 1994-01-14 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1997-01-13 1997-07-15 1998-01-14 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag