US4276659A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Medullary canal plug
Assignee: Individual
•
Filing: 1979-11-19
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Granted: 1981-07-07
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Expires: 1999-11-19
Abstract
Abstract A medullary canal plug for use for example, when inserting the stem of a bone joint replacement into a bone canal. The plug comprising a substantially hemispherical center and a plurality of individual leaves radiating from the flat face of the center with the adjacent edges of the leaves angularly inclined relative to the faces to facilitate the partial overlapping of the leaves, when moved from a planar disposition to a frusto conical position during insertion into the bone canal.
Inventors
- 👤 Kevin Hardinge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:18
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/30721; A61F2/30723; A61F2002/30001; A61F2002/30108; A61F2002/30199; A61F2002/30205; A61F2002/3021; A61F2002/30217; A61F2002/30242; A61F2002/30245; A61F2002/30291; A61F2002/30316; A61F2002/30535; A61F2002/30565; A61F2002/30571; A61F2002/30667; A61F2002/30682; A61F2/30767; A61F2/30771; A61F2002/30878; A61F2002/30884; A61F2/46; A61F2002/4631; A61F2230/00; A61F2230/0063; A61F2230/0067; A61F2230/0071; A61F2230/0091
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
58 words
A medullary canal plug comprises a relatively rigid center and a plurality of individual leaves radiating therefrom, the said leaves being so connected to the center that they can pivot from a substantially flat disc configuration to a condition in which they take up a frusto conical configuration in which the individual leaves lie in partially overlapping condition.
Claim 2
Dependent Claim
58 words
A medullary canal plug comprises a relatively rigid center and a plurality of individual leaves radiating therefrom, the said leaves being so connected to the center that they can pivot from a substantially flat disc configuration to a condition in which they take up a frusto conical configuration in which the individual leaves lie in partially overlapping condition.
Claim 3
Dependent Claim
45 words
A medullary canal plug as set forth in claim 1, in which the individual leaves have their adjacent edges inclined relative to the plane of their faces to facilitate the leaves, when pivoted from the flat disc configuration, to take up the partially overlapping relationship.
Claim 4
Dependent Claim
29 words
A medullary canal plug as set forth in claim 1, in which the relatively rigid center is substantially hemispherical, the leaves radiating from the flat face of the hemisphere.
References Cited (Backward Citations)
GB2017503A
Cited
EP0006408A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-07-06 | 1985-01-05 | 1985-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-06 | 1989-01-05 | 1989-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-06 | 1993-01-05 | 1993-07-07 | $7700.00 | Window Closed / Lapsed |