US4169478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surgical head clamp
Assignee: Schaerer Mayfield USA Inc
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Filing: 1978-03-15
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Granted: 1979-10-02
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Expires: 1998-03-15
Abstract
Abstract A surgical head clamp which comprises a framework on which a first head engaging pin member and a rotatable bracket are supported. The axis of the first pin member is the axis of rotation of the bracket. Spaced second and third head engaging pin members are mounted on the bracket and directed toward the first pin member. The first pin member can be advanced axially toward the bracket to cause the pin members to engage the head. The bracket can be locked in selected position and is releaseable to permit turning of the head about said axis without releasing the pin members from the head.
Inventors
- 👤 Horst R. Hickmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:14
CPC Classifications
A; A61; A61B; A61B90/00; A61B90/10; A61B90/14; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32008; Y10T403/32057
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
126 words
A surgical head clamp which comprises a framework, means for supporting the framework, a first head engaging pin means supported on the framework, a bracket rotatably supported on the framework aligned with and spaced from the first head engaging pin means, spaced second and third head engaging pin means mounted on the bracket, means for advancing the first head engaging pin means axially toward the bracket to cause the head engaging pin means to engage the head, the first head engaging pin means being aligned with the axis of rotation of the bracket, and means for releaseably locking the bracket in selected position, the bracket being releaseable to permit turning of the head about said axis without releasing the head engaging pin means from the head.
Claim 2
Dependent Claim
126 words
A surgical head clamp which comprises a framework, means for supporting the framework, a first head engaging pin means supported on the framework, a bracket rotatably supported on the framework aligned with and spaced from the first head engaging pin means, spaced second and third head engaging pin means mounted on the bracket, means for advancing the first head engaging pin means axially toward the bracket to cause the head engaging pin means to engage the head, the first head engaging pin means being aligned with the axis of rotation of the bracket, and means for releaseably locking the bracket in selected position, the bracket being releaseable to permit turning of the head about said axis without releasing the head engaging pin means from the head.
Claim 3
Dependent Claim
76 words
A surgical head clamp as in claim 1 in which the means for advancing the first head engaging pin means resiliently urges the first head engaging pin means toward the bracket, the framework includes a bearing face opposed to the bracket and extending transversely of the axis of turning of the bracket, and the surgical head clamp includes a bearing ring interposed between said bearing face and the bracket against which the bracket is resiliently urged.
Claim 4
Dependent Claim
84 words
A surgical head clamp as in claim 1 in which the means for releaseably locking the bracket includes teeth carried by the bracket and directed outwardly thereof, a toothed sliding stop member slideably mounted on the framework for sliding toward and away from bracket, and means for advancing the sliding stop member between a locking position in which teeth carried by the locking stop member engage the teeth carried by the bracket and a released position in which the bracket is free to turn.
Claim 5
Dependent Claim
112 words
A surgical head clamp as in claim 3 in which the means for advancing the sliding stop member includes spring means urging the sliding stop member to released position, a handle disc rotatably mounted on the bracket, and a plurality of angularly spaced actuator projections on the handle disc engaging an outer face of the sliding stop member, the outer face of the sliding stop member includes a plurality of dished sockets receiving the actuator projections when the sliding stop member is in released position, and turning of the handle disc causes advance of the actuator projections along sides of the dished sockets to advance the sliding stop member to locking position.
Claim 6
Dependent Claim
41 words
A surgical head clamp as in claim 4 in which the outer face of the sliding stop member includes lands between the dished sockets and the actuator projections ride on the lands when the sliding stop member is in locking position.
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) | 1982-10-01 | 1983-04-02 | 1983-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-10-01 | 1987-04-02 | 1987-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-10-01 | 1991-04-02 | 1991-10-02 | $7700.00 | Window Closed / Lapsed |