US5000746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wound covering having connected discrete elements
Assignee: Friatec AG
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Filing: 1988-08-11
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Granted: 1991-03-19
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Expires: 2008-08-11
Abstract
Abstract A wound covering for burns, extensive skin wounds, skin lesions or the like, which are subject to contamination by germs, including fungi, and may then become slow healing septic wounds which require a special wound covering and wound treatment. The wound covering may either comprise a plurality of individual elements connected by connecting members into a network, and having, at least on the surface, a layer of ceramic or glass, or it may comprise a base, particularly a mat, web or fabric, provided with glass or ceramic layer. The wound coverings according to the invention are permeable to oxygen and liquids, biocompatible and may also be bioactive.
Inventors
- 👤 Ludwig Meiss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:30
CPC Classifications
A; A61; A61L; A61L15/00; A61L15/16; A61L15/18; A61L15/42; A61L15/46; A61F; A61F13/00; A61F13/15; A61F13/51; A61F13/511; A61F13/51121; A61F2013/00089; A61F2013/00157; A61F2013/00246; A61L2300/00; A61L2300/10; A61L2300/102; A61L2300/104; A61L2300/40; A61L2300/404
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
61 words
A wound covering comprising a permeable web which remains flexible during use with a surface of ceramic or glass, wherein said permeable web comprises a plurality of individual elements each having a surface of ceramic or glass, and said elements have the form of plates, sheets, tubes, spheres or rings and are joined together by connecting members to form a network.
Claim 2
Dependent Claim
61 words
A wound covering comprising a permeable web which remains flexible during use with a surface of ceramic or glass, wherein said permeable web comprises a plurality of individual elements each having a surface of ceramic or glass, and said elements have the form of plates, sheets, tubes, spheres or rings and are joined together by connecting members to form a network.
Claim 3
Dependent Claim
19 words
A wound covering as claimed in claim 1, wherein said individual elements are composed entirely of ceramic or glass.
Claim 4
Dependent Claim
23 words
A wound covering as claimed in claim 1, wherein said individual elements are provided with only a surface layer of ceramic or glass.
Claim 5
Dependent Claim
19 words
A wound covering as claimed in claim 1, wherein said surface of each element is comprised of bioinert material.
Claim 6
Dependent Claim
15 words
A wound covering as claimed in claim 4, wherein said bioinert material is aluminum oxide.
Claim 7
Dependent Claim
17 words
A wound covering as claimed in claim 1, wherein said elements are comprised of a bioactive material.
Claim 8
Dependent Claim
18 words
A wound covering as claimed in claim 1, wherein said elements are comprised of bioinert and bioactive materials.
Claim 9
Dependent Claim
26 words
A wound covering as claimed in claim 3, wherein said elements are comprised of a nonceramic core surrounded by an outer layer of ceramic or glass.
Claim 10
Dependent Claim
17 words
A wound covering as claimed in claim 1, wherein said permeable web is formed of inorganic material.
Claim 11
Dependent Claim
18 words
A wound covering as claimed in claim 1, wherein said connecting members are comprised of an organic material.
Claim 12
Dependent Claim
37 words
A wound covering as claimed in claim 1, wherein said elements are spaced apart such that said wound covering covers an overall area which is greater than the sum of individual areas covered by said individual elements.
Claim 13
Dependent Claim
26 words
A wound covering as claimed in claim 6, wherein said bioactive material is selected from the group consisting of calcium phosphates, hydroxy apatite, bioglass and bioceramic.
Claim 14
Dependent Claim
15 words
A wound covering as claimed in claim 12, wherein said bioactive material is tricalcium phosphate.
Claim 15
Dependent Claim
13 words
A wound covering as claimed in claim 1, wherein said elements are porous.
Claim 16
Dependent Claim
32 words
A wound covering as claimed in claim 1, wherein said elements are treated with an antibiotic or antiseptic substance selected from the group consisting of antibacterial agents, antiviral agents and antimycotic agents.
Claim 17
Dependent Claim
51 words
A wound covering, comprising a permeable web which remains flexible during use, said web comprising a plurality of individual elements each having a surface of ceramic or glass and joined together by connecting members to form a network, wherein said wound covering is comprised of a material having an antiseptic action.
Claim 18
Dependent Claim
51 words
A wound covering, comprising a permeable web which remains flexible during use, said web comprising a plurality of individual elements each having a surface of ceramic or glass and joined together by connecting members to form a network, wherein said wound covering is comprised of a material having an antiseptic action.
Claim 19
Dependent Claim
31 words
A wound covering as claimed in claim 16, wherein said material having antiseptic action is impregnated with a silver compound, whereby said silver compound causes said material to exert antiseptic action.
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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) | 1994-03-18 | 1994-09-17 | 1995-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-03-18 | 1998-09-17 | 1999-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-03-18 | 2002-09-17 | 2003-03-19 | $7700.00 | Window Closed / Lapsed |