US5211645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for guiding an internal saw for long tubular bone osteotomy
Assignee: Individual
•
Filing: 1990-07-04
•
Granted: 1993-05-18
•
Expires: 2010-07-04
Abstract
Abstract The device for guiding an internal saw (43) for the osteotomy of long tubular bones (50) has an elongate stem (10), a mandrel (20) which projects centrally from one end of the stem and in its peripheral surface (22), parallel with its axis, there is recessed a longitudinal groove (23) which continues in the stem (10) and through it in a longitudinal recess orientated in alignment with the longitudinal groove and it also has a spacer sleeve (30) adapted to be longitudinally displaced and fixed on the mandrel (20).
Inventors
- 👤 Rainer Baumgart
- 👤 Augustin Betz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:28
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/14; A61B17/15
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
145 words
A device for guiding an internal saw for long tubular bone osteotomy, comprising an elongated stem having a first end portion and a second end portion, a mandrel projecting centrally from the second end portion of the stem and having a free end portion, the mandrel having a peripheral surface and a longitudinal axis, a longitudinal groove recessed in the peripheral surface of the mandrel parallel to the longitudinal axis of the mandrel and extending to the second end portion of the stem, a longitudinal recess formed in the stem and aligned with the groove in the peripheral surface of the mandrel, the recess extending from the second end portion of the stem to the first end portion of the stem, a spacer sleeve adapted to be longitudinally displaced as desired along the mandrel, and fixing means for fixing the spacer sleeve on the mandrel.
Claim 2
Independent Claim
145 words
A device for guiding an internal saw for long tubular bone osteotomy, comprising an elongated stem having a first end portion and a second end portion, a mandrel projecting centrally from the second end portion of the stem and having a free end portion, the mandrel having a peripheral surface and a longitudinal axis, a longitudinal groove recessed in the peripheral surface of the mandrel parallel to the longitudinal axis of the mandrel and extending to the second end portion of the stem, a longitudinal recess formed in the stem and aligned with the groove in the peripheral surface of the mandrel, the recess extending from the second end portion of the stem to the first end portion of the stem, a spacer sleeve adapted to be longitudinally displaced as desired along the mandrel, and fixing means for fixing the spacer sleeve on the mandrel.
Claim 3
Dependent Claim
41 words
The device of claim 1, the longitudinal recess being formed by an eccentric bore, and the longitudinal groove having a semi-circular cross-section at least in its base portion, the depth of the longitudinal groove corresponding to the diameter of the bore.
Claim 4
Dependent Claim
15 words
The device of claim 1, the stem being constructed cylindrically and coaxially with the mandrel.
Claim 5
Dependent Claim
40 words
The device of claim 1, the mandrel having an intermediate zone along its length which is coaxial with the central axis of the mandrel and has a cross-section that does not extend beyond the base portion of the longitudinal groove.
Claim 6
Dependent Claim
26 words
The device of claim 4, the longitudinal groove being formed as a bore tangent to the peripheral surface at the free end portion of the mandrel.
Claim 7
Dependent Claim
14 words
The device of claim 1, the free end portion of the mandrel being tapered.
Claim 8
Dependent Claim
26 words
The device of claim 1, further comprising engaging means disposed at the first end portion of the stem for engaging a tool to rotate the stem.
Claim 9
Dependent Claim
22 words
The device of claim 7, the engaging means being a hexagonal shaped region formed on the first end portion of the stem.
Claim 10
Dependent Claim
30 words
The device of claim 1, further comprising passages which extend through the stem and the mandrel for supplying cooling and/or rinsing fluid and for discharging the fluid with saw waste.
Claim 11
Independent Claim
294 words
A device for guiding an internal saw for long tubular bone osteotomy, comprising an elongated stem having a first end portion and a second end portion, a mandrel projecting centrally from the second end portion of the stem and having a free end portion, the mandrel having a peripheral surface and a longitudinal axis, a longitudinal groove recessed in the peripheral surface of the mandrel parallel to the longitudinal axis of the mandrel and extending to the second end portion of the stem, a longitudinal recess formed in the stem and aligned with the groove in the peripheral surface of the mandrel, the recess extending from the second end portion of the stem to the first end portion of the stem, a spacer sleeve adapted to be longitudinally displaced as desired along the mandrel, fixing means for fixing the spacer sleeve on the mandrel, the longitudinal recess being formed by an eccentric bore, and the longitudinal groove having a semi-circular cross-section at least in its base portion, the depth of the longitudinal groove corresponding to the diameter of the bore, the stem being constructed cylindrically and coaxially with the mandrel, the mandrel having an intermediate zone along its length which is coaxial with the central axis of the mandrel and has a cross-section that does not extend beyond the base portion of the longitudinal groove, the longitudinal groove being formed as a bore tangent to the peripheral surface at the free end portion of the mandrel, the free end portion of the mandrel being tapered, and further comprising engaging means disposed at the first end portion of the stem for engaging a tool to rotate the stem, the engaging means being a hexagonal shaped region formed on the first end portion of the stem.
Claim 12
Independent Claim
294 words
A device for guiding an internal saw for long tubular bone osteotomy, comprising an elongated stem having a first end portion and a second end portion, a mandrel projecting centrally from the second end portion of the stem and having a free end portion, the mandrel having a peripheral surface and a longitudinal axis, a longitudinal groove recessed in the peripheral surface of the mandrel parallel to the longitudinal axis of the mandrel and extending to the second end portion of the stem, a longitudinal recess formed in the stem and aligned with the groove in the peripheral surface of the mandrel, the recess extending from the second end portion of the stem to the first end portion of the stem, a spacer sleeve adapted to be longitudinally displaced as desired along the mandrel, fixing means for fixing the spacer sleeve on the mandrel, the longitudinal recess being formed by an eccentric bore, and the longitudinal groove having a semi-circular cross-section at least in its base portion, the depth of the longitudinal groove corresponding to the diameter of the bore, the stem being constructed cylindrically and coaxially with the mandrel, the mandrel having an intermediate zone along its length which is coaxial with the central axis of the mandrel and has a cross-section that does not extend beyond the base portion of the longitudinal groove, the longitudinal groove being formed as a bore tangent to the peripheral surface at the free end portion of the mandrel, the free end portion of the mandrel being tapered, and further comprising engaging means disposed at the first end portion of the stem for engaging a tool to rotate the stem, the engaging means being a hexagonal shaped region formed on the first end portion of the stem.
Claim 13
Dependent Claim
30 words
The device of claim 10, further comprising passages which extend through the stem and the mandrel for supplying cooling and/or rinsing fluid and for discharging the fluid with saw waste.
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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) | 1996-05-17 | 1996-11-16 | 1997-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-05-17 | 2000-11-16 | 2001-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-05-17 | 2004-11-16 | 2005-05-18 | $7700.00 | Window Closed / Lapsed |