Patent US4950296A successfully refreshed from Google Patents.
US4950296A
Expired / Lapsed
US
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Bone grafting units
Assignee: RTI Biologics Inc
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Filing: 1989-06-13
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Granted: 1990-08-21
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Expires: 2009-06-13
Abstract
Abstract A bone grafting unit comprises a cortical shell having a selected outer shape and size for transplanting and a cavity formed therein for receiving a cancellous plug, and a cancellous plug fitted into said cavity in a manner to expose at least two surfaces thereof to the exterior of said shell.
Inventors
- 👤 Jonathan L. McIntyre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:48
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/44; A61F2/4455; A61F2/447; A61F2/28; A61F2/446; A61F2/442; A61F2002/2825; A61F2002/2835; A61F2002/2839; A61F2002/30001; A61F2002/30003; A61F2002/30004; A61F2002/30057; A61F2002/30108; A61F2002/3011; A61F2002/30112; A61F2002/30113; A61F2002/30138; A61F2002/30153; A61F2002/30154; A61F2002/30199; A61F2002/30224; A61F2002/30261; A61F2002/30263; A61F2002/30316; A61F2002/30329; A61F2002/30331; A61F2002/30354; A61F2002/30362; A61F2002/30364; A61F2002/30367; A61F2002/30535; A61F2002/30593; A61F2/30721; A61F2002/30733; A61F2/30767; A61F2/30771; A61F2002/30772; A61F2002/30795; A61F2/46; A61F2/4644; A61F2002/4649; A61F2220/00; A61F2220/0025; A61F2220/0033; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0006; A61F2230/0017; A61F2230/0019; A61F2230/0021; A61F2230/0063; A61F2230/0069; A61F2230/0082; A61F2230/0084
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
53 words
A bone grafting unit comprising in combination: a shell formed of cortical bone having cavity and an outer shape and size for transplanting into a position between opposed faces of a bone structure with said cavity open to one of said faces; and a plug formed of cancellous bone fitted into said cavity.
Claim 2
Dependent Claim
53 words
A bone grafting unit comprising in combination: a shell formed of cortical bone having cavity and an outer shape and size for transplanting into a position between opposed faces of a bone structure with said cavity open to one of said faces; and a plug formed of cancellous bone fitted into said cavity.
Claim 3
Dependent Claim
24 words
A bone grafting unit according to claim 1 wherein: said shell has a cylindrical configuration; and said cavity is transverse to the axis thereof.
Claim 4
Dependent Claim
23 words
A bone grafting unit according to claim 1 wherein: said cortical bone forming said shell is taken from the shaft of a femur.
Claim 5
Dependent Claim
20 words
A bone grafting unit according to claim 1 wherein: said cancellous bone forming said plug is taken from a knee.
Claim 6
Dependent Claim
20 words
A bone grafting unit according to claim 1 wherein: said cancellous plug is taken from the ilium of a subject.
Claim 7
Dependent Claim
18 words
A bone grafting unit according to claim 1 wherein: said shell is a section of a fermoral shaft.
Claim 8
Dependent Claim
22 words
A bone grafting unit according to claim 6 wherein: said cortical shell has an outer wall thickness of at least two mm.
Claim 9
Dependent Claim
17 words
A bone grafting unit according to claim 7 wherein: said cancellous plug is taken from a knee.
Claim 10
Dependent Claim
74 words
A bone grafting unit comprising in combination: a shell formed of a cortical bone having a selected outer shape and size for transplanting to a selected skeletal cite between opposed faces of a skeletal bone and a cavity formed therein for receiving a cancellous plug; and a cancellous plug formed of a cancellous bone fitted into said cavity in a manner to expose at least one surface thereof to the exterior of said shell.
Claim 11
Dependent Claim
74 words
A bone grafting unit comprising in combination: a shell formed of a cortical bone having a selected outer shape and size for transplanting to a selected skeletal cite between opposed faces of a skeletal bone and a cavity formed therein for receiving a cancellous plug; and a cancellous plug formed of a cancellous bone fitted into said cavity in a manner to expose at least one surface thereof to the exterior of said shell.
Claim 12
Dependent Claim
27 words
A bone grafting unit according to claim 9 wherein: said shell has a cylindrical configuration; and said cavity is a cylindrical bore transverse to the axis thereof.
Claim 13
Dependent Claim
24 words
A bone grafting unit according to claim 10 wherein: said shell formed of a cortical bone is taken from the shaft of a femur.
Claim 14
Dependent Claim
20 words
A bone grafting unit according to claim 11 wherein: said cancellous bone forming said plug is taken from a knee.
Claim 15
Dependent Claim
23 words
A bone grafting unit according to claim 12 wherein: said cancellous bone forming said plug is taken from the ilium of a subject.
Claim 16
Dependent Claim
18 words
A bone grafting unit according to claim 10 wherein: said shell is a section of a fermoral shaft.
Claim 17
Dependent Claim
21 words
A bone grafting unit according to claim 14 wherein: said shell has an outer wall thickness of at least two mm.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-08-20 | 1994-02-19 | 1994-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-20 | 1998-02-19 | 1998-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-20 | 2002-02-19 | 2002-08-21 | $7700.00 | Window Closed / Lapsed |