US7011661B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surgical instrument with rotary cutting member and quick release coupling arrangement
Assignee: Medtronic PS Medical Inc
•
Filing: 2002-06-07
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Granted: 2006-03-14
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Expires: 2022-06-07
Abstract
Abstract A surgical instrument for the dissection of bone and other tissue includes a spindle, a dissection tool and a male member carried by the spindle. The spindle includes a cavity. The dissection tool is releasably received in the cavity. The dissection tool extends along an axis and includes a first end and a second end with the first end having a cutting element and a second end having a generally cylindrical cross-section and a centrally located aperture partially extending along the axis. The male member is carried by the spindle and extends into the aperture of the dissection tool. The cavity may define a drive portion and a tool receiving aperture. One or more alignment projections may extend from the drive portion into the tool receiving aperture.
Inventors
- 👤 Danny C. Riedel
- 👤 Durrell G. Tidwell
- 👤 Bryan David Simmons
- 👤 Larry Dale Estes
- 👤 Allen P. Hilton
- 👤 Rex Wesley Shores
- 👤 John K. Henderson
- 👤 James Q. Spitler
- 👤 Michelle L. Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:50
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/005; A; A61; A61B; A61B17/00; A61B17/16; A61B17/1613; A61B17/162; A61B17/32; A61B17/320016; A61B17/32002; B23B31/02; B23B31/10; B23B31/107; B23B31/1071; B23B31/1072; A61B17/1633; A61B2017/00477; A61B2017/00482; A61B2017/320032; B23B2231/00; B23B2231/02; B23B2231/0216; B23B2231/0232
Claims Analysis
Total Claims: 42
Claim 1
Independent Claim
90 words
A surgical tool for use in the dissection of bone, biomaterials, and/or other tissue when mated with a motor, the surgical tool comprising: a shaft having a dissection portion adjacent a first end and a coupling portion adjacent an opposite second end, the coupling portion including a plurality of driving surfaces; and a retaining surface interrupting at least one of the plurality of driving surfaces, wherein the shaft includes an internal alignment bore in the second end, and wherein the surgical tool is configured for use in a surgical procedure.
Claim 2
Dependent Claim
90 words
A surgical tool for use in the dissection of bone, biomaterials, and/or other tissue when mated with a motor, the surgical tool comprising: a shaft having a dissection portion adjacent a first end and a coupling portion adjacent an opposite second end, the coupling portion including a plurality of driving surfaces; and a retaining surface interrupting at least one of the plurality of driving surfaces, wherein the shaft includes an internal alignment bore in the second end, and wherein the surgical tool is configured for use in a surgical procedure.
Claim 3
Dependent Claim
25 words
The surgical tool of claim 1 , wherein the retaining surface is an indentation defined in at least one of the plurality of driving surfaces.
Claim 4
Dependent Claim
14 words
The surgical tool of claim 2 , wherein the indentation is an annular groove.
Claim 5
Dependent Claim
18 words
The surgical tool of claim 3 , wherein the annular groove has at least a partial cylindrical configuration.
Claim 6
Dependent Claim
26 words
The surgical tool of claim 1 , wherein the internal alignment bore extends from the opposite second end toward the first end along the longitudinal axis.
Claim 7
Dependent Claim
22 words
The surgical tool of claim 1 , wherein the alignment bore is co-axial with a portion of the plurality of driving surfaces.
Claim 8
Dependent Claim
19 words
The surgical tool of claim 1 , wherein the plurality of driving surfaces are spaced circumferentially around the shaft.
Claim 9
Dependent Claim
19 words
The surgical tool of claim 7 , wherein the plurality of driving surfaces define a geometric shape in cross-section.
Claim 10
Dependent Claim
14 words
The surgical tool of claim 8 , wherein the geometric shape is a hexagon.
Claim 11
Dependent Claim
15 words
The surgical tool of claim 1 , wherein the alignment bore includes a single opening.
Claim 12
Dependent Claim
39 words
The surgical tool of claim 1 , wherein the shaft includes a body extending between the first and second ends, the body having a minimum cross-sectional area that is greater than a minimum cross-sectional area of the coupling portion.
Claim 13
Dependent Claim
69 words
A coupling configuration for a shaft of a surgical dissection tool, the coupling configuration comprising: a plurality of non-circular driving surfaces defined on the shaft, the driving surfaces having a drive area with a first end and an opposite second end; a retaining surface defined between the first end and the second end; and a bore extending into an end of the shaft to mate with a tool driver.
Claim 14
Dependent Claim
69 words
A coupling configuration for a shaft of a surgical dissection tool, the coupling configuration comprising: a plurality of non-circular driving surfaces defined on the shaft, the driving surfaces having a drive area with a first end and an opposite second end; a retaining surface defined between the first end and the second end; and a bore extending into an end of the shaft to mate with a tool driver.
Claim 15
Dependent Claim
28 words
The coupling assembly of claim 12 , wherein the shaft is substantially circular in cross section adjacent to at least one of the non-circular plurality of driving surfaces.
Claim 16
Dependent Claim
18 words
The coupling assembly of claim 13 , wherein each of the plurality of driving surfaces are substantially planar.
Claim 17
Dependent Claim
27 words
The coupling assembly of claim 14 , wherein the plurality of substantially planar driving surfaces define a drive area having a first end and a second end.
Claim 18
Dependent Claim
22 words
The coupling assembly of claim 15 , wherein the retaining surface is defined in each of the plurality of planar driving surfaces.
Claim 19
Dependent Claim
14 words
The coupling configuration of claim 12 , wherein the bore includes a single opening.
Claim 20
Dependent Claim
90 words
The coupling configuration of claim 12 , wherein the plurality of driving surfaces are divided by the retaining surface into a first plurality of surfaces adjacent the end of the shaft and a second plurality of surfaces, wherein the first plurality of surfaces extends a first longitudinal distance, the second plurality of surfaces extends a second longitudinal distance, and the retaining surface extends a third longitudinal distance, and wherein the first longitudinal distance of the first plurality of surfaces is less than the third longitudinal distance of the retaining surface.
Claim 21
Dependent Claim
29 words
The coupling configuration of claim 18 , wherein the second longitudinal distance of the second plurality of surfaces is greater than the third longitudinal distance of the retaining surface.
Claim 22
Dependent Claim
124 words
A surgical instrument for the dissection of bone and other tissue having a coupling assembly for receiving a dissection tool with at least one driving surface, the coupling assembly comprising: a housing defining a channel for slidably receiving the dissection tool with at least one driving surface and a driving portion adapted to mate with and rotationally drive at least one driving surface, the channel in communication with the driving portion; and at least one projection extending from the driving portion into the channel, the projection adapted to rotationally align the at least one driving surface of the dissecting tool with the driving portion, wherein the driving portion includes a plurality of substantially planar surfaces separated from each adjacent planar surface by a corner.
Claim 23
Dependent Claim
124 words
A surgical instrument for the dissection of bone and other tissue having a coupling assembly for receiving a dissection tool with at least one driving surface, the coupling assembly comprising: a housing defining a channel for slidably receiving the dissection tool with at least one driving surface and a driving portion adapted to mate with and rotationally drive at least one driving surface, the channel in communication with the driving portion; and at least one projection extending from the driving portion into the channel, the projection adapted to rotationally align the at least one driving surface of the dissecting tool with the driving portion, wherein the driving portion includes a plurality of substantially planar surfaces separated from each adjacent planar surface by a corner.
Claim 24
Dependent Claim
22 words
The apparatus of claim 20 , wherein the driving portion includes at least three driving faces and each face includes a projection.
Claim 25
Dependent Claim
12 words
The apparatus of claim 20 , wherein the projection is substantially triangular.
Claim 26
Dependent Claim
43 words
The apparatus of claim 20 , wherein the channel has a first diameter and the driving portion has a maximum diameter intersecting each corner and a minimum diameter intersecting the midpoint of each planar surface, the minimum diameter less than the maximum diameter.
Claim 27
Dependent Claim
38 words
The apparatus of claim 23 , wherein each projection includes an apex in substantial alignment with the midline of each planar surface and sidewalls extending from the apex toward adjacent corners to thereby define a substantially triangular projection.
Claim 28
Dependent Claim
73 words
A surgical tool coupling assembly having an internal passage with a longitudinal axis, the internal passage adapted to receive a portion of a surgical dissection tool, the coupling assembly comprising: a locking member moveable into the internal passage to hold the dissection tool against movement along the longitudinal axis; and a retention member extending within the internal passage, the retention member configured to limit movement of the locking member into the internal passage.
Claim 29
Dependent Claim
73 words
A surgical tool coupling assembly having an internal passage with a longitudinal axis, the internal passage adapted to receive a portion of a surgical dissection tool, the coupling assembly comprising: a locking member moveable into the internal passage to hold the dissection tool against movement along the longitudinal axis; and a retention member extending within the internal passage, the retention member configured to limit movement of the locking member into the internal passage.
Claim 30
Dependent Claim
21 words
The apparatus of claim 25 , wherein at least a portion of the retention member is coaxial with the locking member.
Claim 31
Dependent Claim
14 words
The apparatus of claim 25 , wherein the locking member is a spherical ball.
Claim 32
Dependent Claim
29 words
The apparatus of claim 27 , wherein the passage has a first diameter and the spherical ball has a second diameter, the first diameter greater than the second diameter.
Claim 33
Dependent Claim
13 words
The apparatus of claim 27 , further including a plurality of spherical balls.
Claim 34
Dependent Claim
20 words
The apparatus of claim 25 , further including a biasing member normally urging the locking member into the internal passage.
Claim 35
Dependent Claim
13 words
The apparatus of claim 25 , wherein the retention member is a pin.
Claim 36
Dependent Claim
14 words
The apparatus of claim 31 , wherein the pin extends along the longitudinal axis.
Claim 37
Dependent Claim
19 words
The apparatus of claim 25 , further including a drive surface disposed in the passage adjacent the locking member.
Claim 38
Dependent Claim
148 words
A surgical tool for use in a surgical procedure when mated with a motor, comprising: a shaft having a first end and a second end, the shaft defining a longitudinal axis; a dissection portion adjacent the first end of the shaft, the dissection portion being configured for use in the surgical procedure; and a coupling portion adjacent the second end of the shaft, the coupling portion including a retaining surface spaced a first longitudinal distance from the second end and extending a second longitudinal distance, a plurality of driving surfaces extending a third longitudinal distance and being disposed between the retaining surface and the first end of the shaft, wherein the third longitudinal distance is greater than the second longitudinal distance, and a longitudinally extending bore formed in the second end of the shaft and configured to receive an alignment pin of a motor of a surgical device.
Claim 39
Dependent Claim
148 words
A surgical tool for use in a surgical procedure when mated with a motor, comprising: a shaft having a first end and a second end, the shaft defining a longitudinal axis; a dissection portion adjacent the first end of the shaft, the dissection portion being configured for use in the surgical procedure; and a coupling portion adjacent the second end of the shaft, the coupling portion including a retaining surface spaced a first longitudinal distance from the second end and extending a second longitudinal distance, a plurality of driving surfaces extending a third longitudinal distance and being disposed between the retaining surface and the first end of the shaft, wherein the third longitudinal distance is greater than the second longitudinal distance, and a longitudinally extending bore formed in the second end of the shaft and configured to receive an alignment pin of a motor of a surgical device.
Claim 40
Dependent Claim
64 words
The surgical tool of claim 34 , wherein the plurality of driving surfaces is a first plurality of driving surfaces, the surgical tool further comprising a second plurality of driving surfaces disposed between the retaining surface and the second end of the shaft, the second plurality of driving surfaces being aligned with the first plurality of driving surfaces and extending the first longitudinal distance.
Claim 41
Dependent Claim
19 words
The surgical tool of claim 34 , wherein the first longitudinal distance is less than the second longitudinal distance.
Claim 42
Dependent Claim
15 words
The surgical tool of claim 34 , wherein the retaining surface is an annular indentation.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2009-03-13 | 2009-09-12 | 2010-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2013-03-13 | 2013-09-12 | 2014-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2017-03-13 | 2017-09-12 | 2018-03-14 | $7700.00 | Window Closed / Lapsed |