US5049149A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sawing gauge system
Assignee: Individual
•
Filing: 1989-12-12
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Granted: 1991-09-17
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Expires: 2009-12-12
Abstract
Abstract A sawing gauge system to be used in case of intertrochantery accommodation osteotomies includes a first sawing gauge having an underside curved like a hollow cylinder for a face-to-face engagement with the bone surface of the femur shaft and a sawing opening oriented vertical to the axis of the femur shaft; and a second sawing gauge having an underside being curved like a hollow cylinder for a face-to-face engagement with the bone surface of the femur shaft and a sawing opening inclined towards the sawing opening in the first sawing gauge by an angle of 6° if the axes of the undersides of the first and second sawing gauges coincide.
Inventors
- 👤 Joachim Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:20
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/14; A61B17/15; A61B17/151
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
170 words
A sawing gauge system to be used for intertrochantery accommodation osteotomies for removing a wedge-shaped section of bone, comprising (a) a first sawing gauge having an underside; said underside being curved like a hollow cylinder for a face-to-face engagement with the bone surface of a femur shaft; (b) a first sawing opening provided in said first sawing gauge; the first sawing opening being oriented perpendicularly to the axis of the femur shaft when said underside of said first sawing gauge is in face-to-face engagement with the bone surface of the femur shaft; (c) a second sawing gauge having an underside; said underside being curved like a hollow cylinder for a face-to-face engagement with the bone surface of the femur shaft; (d) a second sawing opening provided in said second sawing gauge; the second sawing opening being oriented to form an angle of 6° with a perpendicular to the axis of the femur shaft when said second sawing gauge is in face-to-face contact with the bone surface of the femur shaft.
Claim 2
Dependent Claim
170 words
A sawing gauge system to be used for intertrochantery accommodation osteotomies for removing a wedge-shaped section of bone, comprising (a) a first sawing gauge having an underside; said underside being curved like a hollow cylinder for a face-to-face engagement with the bone surface of a femur shaft; (b) a first sawing opening provided in said first sawing gauge; the first sawing opening being oriented perpendicularly to the axis of the femur shaft when said underside of said first sawing gauge is in face-to-face engagement with the bone surface of the femur shaft; (c) a second sawing gauge having an underside; said underside being curved like a hollow cylinder for a face-to-face engagement with the bone surface of the femur shaft; (d) a second sawing opening provided in said second sawing gauge; the second sawing opening being oriented to form an angle of 6° with a perpendicular to the axis of the femur shaft when said second sawing gauge is in face-to-face contact with the bone surface of the femur shaft.
Claim 3
Dependent Claim
25 words
A sawing gauge system as defined in claim 1, wherein said undersides of the first and second sawing gauges have metal pins attached to them.
Claim 4
Dependent Claim
84 words
A sawing gauge system as defined in claim 1, wherein said first sawing gauge has a contact area with the bone surface of the femur shaft which is greater than the area of said first sawing opening as defined by the contact area with the bone surface of said first sawing gauge, and said first sawing opening is disposed adjacent the bone surface of the femur shaft when the first sawing gauge is in face-to-face engagement with the bone surface of a femur shaft.
Claim 5
Dependent Claim
17 words
A sawing gauge system as defined in claim 1, wherein said first sawing gauge comprises a handle.
Claim 6
Dependent Claim
101 words
A sawing gauge system as defined in claim 1, wherein said second sawing gauge comprises an angle plate having a shaft and a longitudinally adjustable slide part which can be attached to the shaft of said angle plate; whereby (a) the orientation of a contact area of said second sawing gauge and the plane of said angle plate are substantially perpendicular in relation to each other; and (b) the orientation of the axis of said underside curved like a hollow cylinder of the second sawing gauge and the direction of elongation of said angle plate run approximately parallel to each other.
Claim 7
Dependent Claim
81 words
A sawing gauge system as defined in claim 5, further comprising a telescopic part and a longitudinally adjustable part disposed between said second sawing gauge and said angle plate, said telescopic part and said longitudinally adjustable part being movable relative to each other, wherein the distance between said angle plate and the axis of said underside curved like a hollow cylinder of the second sawing gauge can be set by either one of said telescopic part and said longitudinally adjustable part.
Claim 8
Dependent Claim
21 words
A sawing gauge system as defined in claim 5, wherein said angle plate comprises an element to lock said slide part.
Claim 9
Dependent Claim
22 words
A sawing gauge system as defined in claim 5, wherein said longitudinally adjustable part comprises an element to lock said slide part.
Claim 10
Dependent Claim
27 words
A sawing gauge system as defined in claim 5, wherein both said angle plate and said longitudinally adjustable part comprise an element to lock said slide part.
Claim 11
Dependent Claim
22 words
A sawing gauge system as defined in claim 7, wherein said element to lock said slide part comprises at least one set-screw.
References Cited (Backward Citations)
US2547571A
Cited
CH511016A
Cited
DE3211153A1
Cited
WO1987001579A1
Cited
US4718413A
Cited
US4926847A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-09-16 | 1995-03-18 | 1995-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-09-16 | 1999-03-18 | 1999-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-09-16 | 2003-03-18 | 2003-09-17 | $7700.00 | Window Closed / Lapsed |