US3741205A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bone fixation plate
Assignee: Individual
•
Filing: 1971-06-14
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Granted: 1973-06-26
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Expires: 1991-06-14
Abstract
Abstract A device for immobilizing adjacent bones or bone fragments or affixing prostheses or orthopaedic structures to a bone, comprising a rigid plate having pin means removably secured therein so as to extend from the plate at an angle with respect to each other and the plate, whereby, upon insertion of the pins into a bone, the plate and pin assembly will hold the bones, bone fragments, orthopaedic structures, or prostheses in a fixed position.
Inventors
- 👤 K Markolf
- 👤 N Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:00
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/80; A61B17/809; A61B17/70; A61B17/7059; A61B17/8052; A61B17/8057
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
217 words
A bone fixation plate for immobilization of cervical vertebrae to aid in cervical bone fusion, comprising a generally rectangular plate having the central portion thereof removed and being open to effect a lightweight device and to permit access to the bone disposed thereunder, said plate having generally rounded edges to prevent trauma to the surrounding tissue and being generally curved to conform to the spherical shape of the vertebrae where the fixation plate is attached, a partially tapped bore formed in the surface of said plate at each corner thereof, said bores being convergently angled with respect to said plate, at least a pair of parallel positioning pins fixedly attached to said plate proximate the top and bottom edges thereof respectively, said pins being capable of being driven into adjacent vertebrae to position and hold said plate thereon while fixation pins are fitted into said plate, and an elongated smooth pin having a resilient coating thereon and a threaded head portion engaged with each of the threaded bores in the corners of said plate, said pins being capable of being positively locked in said bores by the interaction of said threaded heads with said partially tapped bores whereby said plate is fixedly secured to said vertebrae by the angulation of said pins with respect to said plate.
Claim 2
Dependent Claim
217 words
A bone fixation plate for immobilization of cervical vertebrae to aid in cervical bone fusion, comprising a generally rectangular plate having the central portion thereof removed and being open to effect a lightweight device and to permit access to the bone disposed thereunder, said plate having generally rounded edges to prevent trauma to the surrounding tissue and being generally curved to conform to the spherical shape of the vertebrae where the fixation plate is attached, a partially tapped bore formed in the surface of said plate at each corner thereof, said bores being convergently angled with respect to said plate, at least a pair of parallel positioning pins fixedly attached to said plate proximate the top and bottom edges thereof respectively, said pins being capable of being driven into adjacent vertebrae to position and hold said plate thereon while fixation pins are fitted into said plate, and an elongated smooth pin having a resilient coating thereon and a threaded head portion engaged with each of the threaded bores in the corners of said plate, said pins being capable of being positively locked in said bores by the interaction of said threaded heads with said partially tapped bores whereby said plate is fixedly secured to said vertebrae by the angulation of said pins with respect to said plate.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |