US4995877A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device with a rotationally-driven surgical instrument
Assignee: Richard Wolf GmbH
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Filing: 1989-02-17
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Granted: 1991-02-26
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Expires: 2009-02-17
Abstract
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.
Inventors
- 👤 Felix Ams
- 👤 Manfred Baier
- 👤 Roland Schafer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:55
CPC Classifications
B; B23; B23Q; B23Q5/00; A; A61; A61B; A61B17/00; A61B17/16; A61B17/1613; A61B17/1626; G; G05; G05B; G05B19/00; G05B19/02; G05B19/04; G05B19/10; G05B19/106; A61B2017/00973
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
182 words
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.
Claim 2
Independent Claim
182 words
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.
Claim 3
Dependent Claim
18 words
A device according to claim 1, wherein the code carrier is constructed as a card, key, or plug.
Claim 4
Dependent Claim
36 words
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.
Claim 5
Dependent Claim
31 words
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.
Claim 6
Dependent Claim
38 words
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.
Claim 7
Dependent Claim
54 words
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.
Claim 8
Dependent Claim
35 words
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.
Claim 9
Dependent Claim
37 words
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.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-02-25 | 1994-08-27 | 1995-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-02-25 | 1998-08-27 | 1999-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-02-25 | 2002-08-27 | 2003-02-26 | $7700.00 | Window Closed / Lapsed |