Patent US5115801A successfully refreshed from Google Patents.
US5115801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogel burn dressing product
Assignee: Conmed Corp
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Filing: 1990-05-02
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Granted: 1992-05-26
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Expires: 2010-05-02
Abstract
Abstract A flexible burn dressing product contains a hydrogel material in a gel-like phase. The burn dressing product is comprised of several layers including a burn dressing and a release layer. The burn dressing is comprised of a bacterial barrier layer coated with a bonding layer, a reticulated layer impregnated with a hydrogel material, and a hydrogel material layer. A dimensionally stable backing member may also be adhesively attached to the bacterial barrier layer to help the burn dressing maintain its shape until it is applied to a patient. When the burn dressing product is to be applied to a burn site, the release layer is removed to expose the hydrogel material layer. The remaining layers of the burn dressing product are then applied to the burn site, with the hydrogel material layer directly contacting the burn. Once these layers are in place, the dimensionally stable backing member is removed.
Inventors
- 👤 James V. Cartmell
- 👤 Michael L. Wolf
- 👤 Michael J. Allaire
- 👤 Wayne R. Sturtevant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:43
CPC Classifications
A; A61; A61L; A61L15/00; A61L15/16; A61L15/42; A61L15/60; A61F; A61F13/00; A61F13/02; A61F13/023; A61L15/22; A61L15/26; A61F2013/00361; A61F2013/00365; A61F2013/00519; A61F2013/00523; A61F2013/00544; A61F2013/00553; A61F2013/00604; A61F2013/00608; A61F2013/00727; A61F2013/00748; A61F2013/00795; A61F2013/008; A61F2013/00804; A61F2013/00829; A61F2013/00846; A61F2013/00855; A61F2013/00868
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
139 words
A burn dressing product for a burn, comprising: a burn dressing including a bacterial barrier layer having a first side and a second side, a bonding layer coated on said first side of said bacterial barrier layer, a reticulated layer being sufficiently absorbent to be impregnated with a polyurethane hydrogel material, said reticulated layer being selected from the group consisting of foams, scrim and non-woven materials, said reticulated layer having a first side and a second side, wherein said second side of said reticulated layer is secured to said bacterial barrier layer by means of said bonding layer, and a polyurethane hydrogel material layer on said first side of said impregnated reticulated layer; and a release liner overlying said hydrogel material layer and secured to said first side of said reticulated layer by means of said hydrogel material layer.
Claim 2
Dependent Claim
139 words
A burn dressing product for a burn, comprising: a burn dressing including a bacterial barrier layer having a first side and a second side, a bonding layer coated on said first side of said bacterial barrier layer, a reticulated layer being sufficiently absorbent to be impregnated with a polyurethane hydrogel material, said reticulated layer being selected from the group consisting of foams, scrim and non-woven materials, said reticulated layer having a first side and a second side, wherein said second side of said reticulated layer is secured to said bacterial barrier layer by means of said bonding layer, and a polyurethane hydrogel material layer on said first side of said impregnated reticulated layer; and a release liner overlying said hydrogel material layer and secured to said first side of said reticulated layer by means of said hydrogel material layer.
Claim 3
Dependent Claim
39 words
A burn dressing product as claimed in claim 1 further including a dimensionally stable backing member having an adhesive layer, said backing member secured to said second side of said bacterial barrier layer by means of said adhesive layer.
Claim 4
Dependent Claim
18 words
A burn dressing product as claimed in claim 1 wherein said bacterial barrier layer comprises a polyurethane material.
Claim 5
Dependent Claim
184 words
A burn dressing product for a burn, comprising: a burn dressing including a bacterial barrier layer having a first side and a second side; a bonding layer coated on said first side of said bacterial barrier layer; a reticulated layer impregnated with a hydrogel material and having a first side and a second side, said second side of said reticulated layer being secured to said bacterial barrier layer by means of said bonding layer; a hydrogel material layer on said first side of said impregnated reticulated layer wherein said hydrogel material is formed from about 15% to about 30% by weight of a polyhydric alcohol selected from a group consisting of polypropylene glycol, polyethylene glycol and glycerine, from about 8% to about 14% by weight of an isophorone diisocyanate terminated prepolymer, from about 5% to about 10% by weight of a polyethylene oxide based diamine, up to about 1% by weight of a salt, and the balance water; and a release liner overlying said hydrogel material layer and secured to said first side of said reticulated layer by means of said hydrogel material layer.
Claim 6
Dependent Claim
184 words
A burn dressing product for a burn, comprising: a burn dressing including a bacterial barrier layer having a first side and a second side; a bonding layer coated on said first side of said bacterial barrier layer; a reticulated layer impregnated with a hydrogel material and having a first side and a second side, said second side of said reticulated layer being secured to said bacterial barrier layer by means of said bonding layer; a hydrogel material layer on said first side of said impregnated reticulated layer wherein said hydrogel material is formed from about 15% to about 30% by weight of a polyhydric alcohol selected from a group consisting of polypropylene glycol, polyethylene glycol and glycerine, from about 8% to about 14% by weight of an isophorone diisocyanate terminated prepolymer, from about 5% to about 10% by weight of a polyethylene oxide based diamine, up to about 1% by weight of a salt, and the balance water; and a release liner overlying said hydrogel material layer and secured to said first side of said reticulated layer by means of said hydrogel material layer.
Claim 7
Dependent Claim
155 words
A burn dressing product for a burn, comprising: a burn dressing including a bacterial barrier layer having a first side and a second side; a bonding layer coated on said first side of said bacterial barrier layer; a reticulated layer impregnated with a hydrogel material and having a first side and a second side, said second side of said reticulated layer being secured to said bacterial barrier layer by means of said bonding layer; a hydrogel material layer on said first side of said impregnated reticulated layer wherein aid hydrogel material is formed from 17% by weight of a polypropylene glycol, 12% by weight of an isophorone diisocyanate terminated prepolymer, 9% by weight of an polyethylene oxide based diamine, 1% by weight of a salt, and the balance water; and a release liner overlying said hydrogel material layer and secured to said first side of said reticulated layer by means of said hydrogel material layer.
Claim 8
Dependent Claim
155 words
A burn dressing product for a burn, comprising: a burn dressing including a bacterial barrier layer having a first side and a second side; a bonding layer coated on said first side of said bacterial barrier layer; a reticulated layer impregnated with a hydrogel material and having a first side and a second side, said second side of said reticulated layer being secured to said bacterial barrier layer by means of said bonding layer; a hydrogel material layer on said first side of said impregnated reticulated layer wherein aid hydrogel material is formed from 17% by weight of a polypropylene glycol, 12% by weight of an isophorone diisocyanate terminated prepolymer, 9% by weight of an polyethylene oxide based diamine, 1% by weight of a salt, and the balance water; and a release liner overlying said hydrogel material layer and secured to said first side of said reticulated layer by means of said hydrogel material layer.
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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) | 1995-05-26 | 1995-11-25 | 1996-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-05-26 | 1999-11-25 | 2000-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-05-26 | 2003-11-25 | 2004-05-26 | $7700.00 | Window Closed / Lapsed |