US3701348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chisel retractor tool
Assignee: Individual
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Filing: 1970-12-09
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Granted: 1972-10-31
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Expires: 1990-12-09
Abstract
Abstract An instrument or tool for opening sections of the body such as the skull for performing pathological procedures.
Inventors
- 👤 Joseph Navara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:50
CPC Classifications
A; A61; A61B; A61B16/00; A61B17/00; A61B17/16; A61B17/1604
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
An instrument for use in pathological procedures comprising an elongated portion, a chisel portion extending from one end of said elongated portion and substantially at a right angle to the plane of said elongated portion permitting the chisel to be driven into a cut by impacting said elongated portion substantially normal to the plane thereof, said chisel portion comprising a flat relatively wide member, solid in cross section, with an edge substantially as wide as the remaining chisel portion whereby after the chisel portion is inserted in a cut, a prying action can be provided by movement of the instrument in a direction laterally to the cut, a curved retractor portion formed on the other end of said elongated portion, and said chisel portion and said retractor portion extending substantially in the same direction from the plane of said elongated portion whereby the same instrument may be used by the user to cut and pry, and also to retract.
Claim 2
Dependent Claim
159 words
An instrument for use in pathological procedures comprising an elongated portion, a chisel portion extending from one end of said elongated portion and substantially at a right angle to the plane of said elongated portion permitting the chisel to be driven into a cut by impacting said elongated portion substantially normal to the plane thereof, said chisel portion comprising a flat relatively wide member, solid in cross section, with an edge substantially as wide as the remaining chisel portion whereby after the chisel portion is inserted in a cut, a prying action can be provided by movement of the instrument in a direction laterally to the cut, a curved retractor portion formed on the other end of said elongated portion, and said chisel portion and said retractor portion extending substantially in the same direction from the plane of said elongated portion whereby the same instrument may be used by the user to cut and pry, and also to retract.
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) | 1975-10-31 | 1976-05-01 | 1976-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-31 | 1980-05-01 | 1980-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-31 | 1984-05-01 | 1984-10-31 | $7700.00 | Window Closed / Lapsed |