US4674488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating bone fractures to reduce formation of fibrous adhesions
Assignee: Baxter International Inc
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Filing: 1985-03-04
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Granted: 1987-06-23
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Expires: 2005-03-04
Abstract
Abstract A method of treating a bone fracture which involves interposing a barrier layer of soft biological tissue at the interface of the bone and surrounding tissue.
Inventors
- 👤 Aws S. Nashef
- 👤 Todd D. Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:35
CPC Classifications
A; A61; A61L; A61L31/00; A61L31/005; A61F; A61F2/00; A61F2/02; A61F2/28; A61K; A61K35/00; A61K35/12; A61K35/30; A61K35/34; A61K35/48; A61K35/50; Y; Y10; Y10S; Y10S623/00; Y10S623/92; Y10S623/923
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
49 words
A method of treating a bone fracture to substantially inhibit the formation of fibrous adhesions between the bone fracture surface and the surrounding tissue during the healing process, which comprises interposing a barrier layer of soft bioprosthetic tissue at the interface of said bone fracture and the surrounding tissue.
Claim 2
Independent Claim
49 words
A method of treating a bone fracture to substantially inhibit the formation of fibrous adhesions between the bone fracture surface and the surrounding tissue during the healing process, which comprises interposing a barrier layer of soft bioprosthetic tissue at the interface of said bone fracture and the surrounding tissue.
Claim 3
Dependent Claim
29 words
The method of claim 1 wherein said bioprosthetic tissue is naturally occurring biological tissue which is fixed with a tanning agent prior to being interposed as said barrier layer.
Claim 4
Dependent Claim
17 words
The method of claim 2 wherein the biological tissue is selected from epithelial or fibrous connective tissue.
Claim 5
Dependent Claim
24 words
The method of claim 2 wherein the biological tissue is selected from the group consisting of pericardial tissue, dura mater, fascia lata, and amnion.
Claim 6
Dependent Claim
28 words
The method of claim 4, wherein the biological tissue is derived from a source selected from the group consisting of bovine, porcine, horse, sheep, kangaroo and rabbit sources.
Claim 7
Dependent Claim
21 words
The method of claim 2 wherein the biological tissue is treated prior to implantation to render it substantially resistant to calcification.
Claim 8
Dependent Claim
12 words
The method of claim 6 wherein the biological tissue is pericardial tissue.
Claim 9
Dependent Claim
11 words
The method of claim 2 wherein the tanning agent is glutaraldehyde.
Claim 10
Dependent Claim
25 words
The method of claim 1 wherein the overall dimensions of said barrier layer are sufficient to substantially cover the outer surface of said bone fracture.
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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) | 1990-06-22 | 1990-12-22 | 1991-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-22 | 1994-12-22 | 1995-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-22 | 1998-12-22 | 1999-06-23 | $7700.00 | Window Closed / Lapsed |