Surgical laser system with multiple output devices

• US 4,580,557 A
• Filed: 08/22/1983
• Issued: 04/08/1986
• Est. Priority Date: 08/22/1983
• Status: Expired due to Term

• Current Assignee: Laserscope (Endo International PLC)
• Original Assignee: Laserscope (Endo International PLC)
• Inventors: Hertzmann, Peter
• Primary Examiner(s): Cohen, Lee S.
• Application Number:
  US06/525,833
• Time in Patent Office: 960 Days
• Field of Search: 128/303.1, 128/395-398, 219/121 LA, 219/121 LB, 219/121 LP, 219/121 LQ, 219/121 LR, 219/121 LZ, 372/38, 372/108, 372/109
• US Class Current: 606/12
• CPC Class Codes: A61B 18/20 using laser
• CPC Class Codes: A61B 2017/00482 with a code
• CPC Class Codes: A61B 2018/00636 Sensing and controlling the application of energy

Abstract

A surgical laser system includes a laser, interchangeable peripheral output devices, a sensor effective to sense the power output of a peripheral device coupled to the sensor, and a control circuit for calibrating the radiation output of each device, interlocking the system to prevent use of a device before it has been calibrated, and controlling the production of calibration, aiming and main power laser beams.

Claims

1. A surgical laser apparatus comprising:

a laser operable to produce an output beam at an adjustable power level;

interchangeable peripheral surgical devices, a selected one of which is operatively coupled to the laser to receive the laser beam, said devices each having an identifying signature for use in identifying the selected device;

sensor means for sensing the power output of a surgical device coupled to the laser; and

control circuit means operatively coupled to said sensor means and to the signature of the coupled device for (a) identifying the surgical device by means of the device'"'"'s signature, (b) enabling the laser to produce an output beam when the surgical device is coupled to the sensor means for measuring the power output from the device, and (c) disabling the laser from producing an output beam for surgical use until the power output of such surgical device has been measured.

2. The apparatus of claim 1 which further comprises detector means for measuring the power output from said laser, and wherein said control circuit means is operable to determine and store the ratio of the sensed power outputs from the sensor means and detector means.

3. The apparatus of claim 2 wherein said control circuit means is operable to detect the recoupling to the laser of a surgical device which was previously coupled to the laser and includes circuit means for recalling the stored value representative of said ratio.

4. The apparatus of claim 1 further comprising:

a controllable attenuator receiving output radiation from said laser; and

an optical fiber cable coupling the attenuator and the surgical device.

5. The apparatus of claim 1 wherein the sensor means comprises an integrating cavity into which the surgical device may be inserted, and a semiconductor radiation detector for receiving radiation from an interior wall of the cavity.

6. The apparatus of claim 1 wherein the signature for identifying the surgical device is an electronic resistance adapted for electrical connection with the control circuit means when the surgical device is coupled to the laser.

7. The apparatus of claim 1 further comprising beam directing and attenuating means for splitting the laser beam into a main power beam and a lower power aiming beam, and for coupling one of the main power beam and aiming beam to the surgical device.

8. The apparatus of claim 1 further comprising a two state switch operatively connected to the control circuit means for triggering the emission of laser radiation from the peripheral surgical device, said switch having a first state in which the emission of the lower power aiming beam is triggered and a second state in which the emission of the higher power main beam is triggered, wherein the control circuit means is operable to place said switch in the first state for a predetermined period of time before placing the switch in the second state.