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US3986512A
Expired / Lapsed
US
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Osteotome
Assignee: Schaerer AG
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Filing: 1974-12-20
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Granted: 1976-10-19
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Expires: 1994-12-20
Abstract
Abstract An osteotome comprising an interchangeable saw-blade, a crank, and a driving shaft makes possible simultaneous reciprocating and vertical swiveling movements of the saw-blade, thus obviating setting of the saw-teeth, enabling narrow cuts to be made in bone, and providing the opportunity for required sterilization and cooling.
Inventors
- 👤 Anton Walliser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:32
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/14; A61B17/142; A61B17/144
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
131 words
An osteotome, comprising: an elongated frame; a crank member rotatably mounted on said frame; a drive shaft having means for detachably mounting a saw blade located at one end and having its other end coupled to a radial arm of said crank member; a bearing member, having a bore hole extending therethrough, rotatably mounted on said frame with an axis of rotation substantially parallel to the rotational axis of said crank member and axially located between the two ends of said drive shaft, said drive shaft extending through and being slidably movable within said bore hole; wherein said shaft is pivotally and axially driven by said crank member; and wherein the pivot axis of said drive shaft intersects an axis connecting the centers of rotation of said crank and bearing members.
Claim 2
Dependent Claim
131 words
An osteotome, comprising: an elongated frame; a crank member rotatably mounted on said frame; a drive shaft having means for detachably mounting a saw blade located at one end and having its other end coupled to a radial arm of said crank member; a bearing member, having a bore hole extending therethrough, rotatably mounted on said frame with an axis of rotation substantially parallel to the rotational axis of said crank member and axially located between the two ends of said drive shaft, said drive shaft extending through and being slidably movable within said bore hole; wherein said shaft is pivotally and axially driven by said crank member; and wherein the pivot axis of said drive shaft intersects an axis connecting the centers of rotation of said crank and bearing members.
Claim 3
Dependent Claim
24 words
An osteotome in accordance with claim 1, further comprising a support coupled to said frame to be braced against a bone to be cut.
Claim 4
Dependent Claim
27 words
An osteotome according to claim 1, wherein the center of pivotal motion of said shaft is substantially coincident with the center of rotational movement of said bearing.
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) | 1979-10-19 | 1980-04-19 | 1980-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-19 | 1984-04-19 | 1984-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-19 | 1988-04-19 | 1988-10-19 | $7700.00 | Window Closed / Lapsed |