US4215438A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prosthesis for ossicular chain reconstruction
Assignee: Individual
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Filing: 1979-01-22
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Granted: 1980-08-05
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Expires: 1999-01-22
Abstract
Abstract A prosthesis for reconstruction of the auditory ossicles. The prosthesis comprises essentially a goblet-shaped member, preferably of stainless steel or like inert material, the cup portion of which is disposed to receive the capitulum of the stapes while the stem portion is inserted into a hole drilled into the body of the incus. The prosthesis thus bridges the space between the stapes head and incus, the incus being repositioned against the malleus and the tympanic membrane.
Inventors
- 👤 Dennis G. Pappas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:45
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/18; A61F2002/183
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
In a prosthesis for reconstruction of the auditory ossicles, (a) a member of substantially rigid material having an open cup-like end and an integrally formed stem projecting axially from the closed end of the cup-like portion, said prothesis being approximately 0.098 inches in overall length, the cup-like portion having an outside diameter of approximately 0.054 and an inside diameter of approximately 0.047 inch, the cup-like portion being generally cylindrical shaped and about 0.034 inch long, said stem being approximately 0.016 inch in diameter and about 0.045 inch long, and (b) a conical section joining the cup and stem portions and being on the order of 0.019 inch long.
Claim 2
Dependent Claim
108 words
In a prosthesis for reconstruction of the auditory ossicles, (a) a member of substantially rigid material having an open cup-like end and an integrally formed stem projecting axially from the closed end of the cup-like portion, said prothesis being approximately 0.098 inches in overall length, the cup-like portion having an outside diameter of approximately 0.054 and an inside diameter of approximately 0.047 inch, the cup-like portion being generally cylindrical shaped and about 0.034 inch long, said stem being approximately 0.016 inch in diameter and about 0.045 inch long, and (b) a conical section joining the cup and stem portions and being on the order of 0.019 inch long.
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) | 1983-08-05 | 1984-02-04 | 1984-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-08-05 | 1988-02-04 | 1988-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-08-05 | 1992-02-04 | 1992-08-05 | $7700.00 | Window Closed / Lapsed |