Patent US5591234A successfully refreshed from Google Patents.
US5591234A
Expired / Lapsed
US
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Post-surgery orthopedic covering
Assignee: Individual
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Filing: 1995-09-19
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Granted: 1997-01-07
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Expires: 2015-09-19
Abstract
Abstract A post-surgery orthopedic covering for a recess in endogenic bone tissue filled with an osteogenic material, such as hydroxyapatite granules, has a covering membrane with a stiffening layer which can be integrated with the covering membrane, or provided as a separate stiffening element.
Inventors
- 👤 Axel Kirsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:33
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/80; A61F; A61F2/00; A61F2/02; A61F2/28; A61F2/2846; A61L; A61L31/00; A61L31/02; A61L31/022; A61L31/08; A61L31/10; A61B17/8085; A61B2017/00004; A61F2/0077; A61F2002/2835; A61F2/30; A61F2002/30001; A61F2002/30003; A61F2002/30004; A61F2002/30032; A61F2002/3006; A61F2002/30062; A61F2/30767; A61F2002/30929; A61F2/3094; A61F2002/30971; A61F13/00; A61F2013/00089; A61F2013/00357; A61F2210/00; A61F2210/0004; A61F2240/00; A61F2240/001; A61F2250/00; A61F2250/0014; A61F2250/003; A61F2310/00; A61F2310/00005; A61F2310/00179; A61F2310/00293; A61F2310/00389; A61F2310/00395; A61F2310/00407
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
112 words
A post-surgery orthopedic covering adapted to cover a bone defect point in endogenic bone tissue filled with an osteogenic material, said covering comprising: a membrane adapted to be disposed adjacent said bone defect point and said endogenic bone tissue; a stiffening layer connected to said membrane; said membrane consisting of resorbable membrane material and comprising a plurality of layers having respectively different mechanical properties, giving said layers, in combination, a resorbability gradient from a first side of said membrane adapted to be remote from said endogenic bone to a second side of said membrane adapted to face said endogenic bone, said resorbability gradient increasing from said first side to said second side.
Claim 2
Dependent Claim
112 words
A post-surgery orthopedic covering adapted to cover a bone defect point in endogenic bone tissue filled with an osteogenic material, said covering comprising: a membrane adapted to be disposed adjacent said bone defect point and said endogenic bone tissue; a stiffening layer connected to said membrane; said membrane consisting of resorbable membrane material and comprising a plurality of layers having respectively different mechanical properties, giving said layers, in combination, a resorbability gradient from a first side of said membrane adapted to be remote from said endogenic bone to a second side of said membrane adapted to face said endogenic bone, said resorbability gradient increasing from said first side to said second side.
Claim 3
Dependent Claim
16 words
A covering as claimed in claim 1 wherein said stiffening layer is integrated into said membrane.
Claim 4
Dependent Claim
19 words
A covering as claimed in claim 1 wherein said stiffening layer comprises a stiffening element separate from said membrane.
Claim 5
Dependent Claim
27 words
A covering as claimed in claim 3 wherein said stiffening layer connected at a side of said membrane adapted to be remote from said endogenic bone tissue.
Claim 6
Dependent Claim
17 words
A covering as claimed in claim 1 wherein said stiffening layer consists of a perforated metal plate.
Claim 7
Dependent Claim
15 words
A covering as claimed in claim 1 wherein said stiffening layer comprises a metal lattice.
Claim 8
Dependent Claim
14 words
A covering as claimed in claim 1 wherein said stiffening layer comprises metal gauze.
Claim 9
Dependent Claim
14 words
A covering as claimed in claim 1 wherein said stiffening layer consists of titanium.
Claim 10
Dependent Claim
14 words
A covering as claimed in claim 1 wherein said stiffening layer consists of plastic.
Claim 11
Dependent Claim
16 words
A covering as claimed in claim 1 wherein said stiffening layer consists of a plastic grid.
Claim 12
Dependent Claim
32 words
A covering as claimed in claim 1 wherein said membrane consists of first plastic material and wherein said stiffening layer consists of a second plastic material different from said first plastic material.
Claim 13
Dependent Claim
22 words
A covering as claimed in claim 1 wherein said stiffening layer has a thickness in a range of 0.3 to 1.0 mm.
Claim 14
Dependent Claim
18 words
A covering as claimed in claim 12 wherein said stiffening layer has a thickness of approximately 0.5 mm.
Claim 15
Dependent Claim
20 words
A covering as claimed in claim 1 wherein said membrane consists of a plurality of layers having respectively different compositions.
Claim 16
Dependent Claim
20 words
A covering as claimed in claim 1 wherein said membrane consists of a plurality of layers having respectively different densities.
Claim 17
Dependent Claim
19 words
A covering as claimed in claim 1 wherein said layers consist of woven material with respectively different weave openness.
Claim 18
Dependent Claim
18 words
A covering as claimed in claim 1 wherein said resorbable material of said membrane includes lyophilized dura mater.
Claim 19
Dependent Claim
16 words
A covering as claimed in claim 1 wherein said resorbable material of said membrane includes polylactide/vicryl.
Claim 20
Dependent Claim
16 words
A covering as claimed in claim 1 wherein said resorbable material of said membrane includes collagen.
Claim 21
Dependent Claim
16 words
A covering as claimed in claim 1 wherein said resorbable material of said membrane includes polylactide.
Claim 22
Dependent Claim
17 words
A covering as claimed in claim 1 wherein said resorbable material of said membrane includes oxymethyl cellulose.
Claim 23
Dependent Claim
69 words
A covering as claimed in claim 1 wherein said resorbability gradient decreases from said side of said membrane adapted to be remote from said endogenic bone to said side of said membrane adapted to face said endogenic bone so that said membrane material at said side adapted to face said endogenic bone is only resorbed by said endogenic bone when substantially complete osseous growth in said recess has occurred.
References Cited (Backward Citations)
SU581935A1
Cited
US4145468A
Cited
US4365357A
Cited
GB2056882A
Cited
EP0082621A1
Cited
US4539981A
Cited
US4801299A
Cited
GB2142544A
Cited
EP0189546A1
Cited
EP0190422A1
Cited
WO1987000419A1
Cited
US5007916A
Cited
US4813958A
Cited
US4816339A
Cited
US5057111A
Cited
WO1990001955A1
Cited
DE3831657A1
Cited
EP0475077A2
Cited
EP0504103A1
Cited
US5196016A
Cited
DE9115341U1
Cited
US5346492A
Cited
US5380328A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-01-07 | 2000-07-08 | 2001-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-01-07 | 2004-07-08 | 2005-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-01-07 | 2008-07-08 | 2009-01-07 | $7700.00 | Window Closed / Lapsed |