Device with a rotationally-driven surgical instrument

• US 4,995,877 A
• Filed: 02/17/1989
• Issued: 02/26/1991
• Est. Priority Date: 02/19/1988
• Status: Expired due to Term

• Current Assignee: Richard Wolf GmbH Knittlingen
• Original Assignee: Richard Wolf GmbH (Richard & Annemarie Wolf- Stiftung)
• Inventors: Schafer, Roland, Baier, Manfred, Ams, Felix
• Primary Examiner(s): Thaler, Michael H.
• Application Number:
  US07/311,758
• Time in Patent Office: 739 Days
• Field of Search: 606/167, 606/168, 606/170, 606/171, 606/180, 606/79, 606/80, 606/81, 606/84, 604/22, 433/98, 433/99, 30/500
• US Class Current: 606/180
• CPC Class Codes: A61B 17/1626 Control means; Display units
• CPC Class Codes: A61B 2017/00973 pedal-operated
• CPC Class Codes: B23Q 5/00 Driving or feeding mechanisms; Control arrangements therefor automatic control B23Q15/00; copying B23Q33/00, B23Q35/00; specially adapted for boring or drilling machines B23B39/10, B23B47/00; numerical programme-control of machine tools G05B19/18
• CPC Class Codes: G05B 19/106 for selecting a programme, variable or parameter

Abstract

The device comprises a rotationally driven surgical instrument incorporating a hand-held element having a mount rotatably installed therein for reception of interchangeable cutting and milling inserts, a driving motor for driving the mount receiving the tool inserts, a control unit for controlling the driving motor with means of setting the rotational speed and of preselecting the rotational speed range and direction of rotation as well as a digital indicator for displaying the rotational speed set up in each case. For the purpose of accessible storage of setting data, the control unit incorporates a non-volatile read-write memory for digital storage of rotational speeds, a code carrier as well as a coding/decoding arrangement.

Claims

1. A device comprising:

a rotationally driven surgical instrument having a hand-held element;

interchangeable cutting and milling inserts;

a mount rotatably installed in said hand-held element for reception of said interchangeable cutting and milling inserts;

a driving motor for driving the mount receiving the cutting and milling inserts, and;

a control unit for controlling the driving motor including means for setting a rotational speed of the motor and for preselecting a rotational speed range and also an indicator for display of the rotational speed set in each case;

said control unit comprising a non-volatile write-read memory for digital storage of user-specific rotational speed data,

a code carrier remote from said cutting and milling inserts and removable from said control unit, said code carrier carrying a reprogrammable encoding corresponding to speed data in said write-read memory, said encoding on said code carrier being reprogrammable by a user to set said surgical instrument to a user selected rotational speed range, and also

a means for coding/decoding said encoding on said code carrier, said means for coding/decoding selectively receiving said code carrier for reading said encoding.

2. A device according to claim 1, wherein the code carrier is constructed as a card, key, or plug.

3. A device according to claim 1, wherein the control unit has allocated to it a switching arrangement adapted to be foot-operated for turning the driving motor on and off and for changing its direction of rotation.

4. A device according to claim 3, wherein the switching arrangement for turning the driving motor on and off and for changing its direction of rotation is associated with the hand-held element.

5. A device according to claim 1, wherein the hand-held element incorporates a further decoder for conversion of a further code allocated to the cutting and milling inserts into an electrical signal which is evaluated by the control unit.

6. A device, according to claim 1, wherein the control unit includes means for allowing a method of operation to be applied as a function of the cutting tool, in which the direction of rotation of the driving motor changes periodically, the change-over occurring in each case after completion of at least one complete revolution.

7. A device according to claim 1, wherein the control means comprises connecting means whereby the data set up can be transmitted to an external recording apparatus and/or gated into an endoscope image on a monitor.

8. A device according to claim 1, wherein the control unit has a switching arrangement in the hand-held element for turning the drive motor on and off and for changing the direction of rotation of the drive motor.