US5090406A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vented absorbent dressing
Assignee: Kendall Co
•
Filing: 1991-03-06
•
Granted: 1992-02-25
•
Expires: 2011-03-06
Abstract
Abstract A vented dressing is disclosed including a vent cover for providing controlled leakage of fluid from the wound, wherein the vent cover consists essentially of inner and outer sheets secured together in superposition, the inner sheet comprising an elastomeric water-swellable polymeric material, the outer sheet providing a barrier to water evaporation.
Inventors
- 👤 Thomas H. Gilman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:45
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/02; A61F13/023; A61F13/0203; A61F13/0206; A61F13/05; A61F2013/00361; A61F2013/00544; A61F2013/00553; A61F2013/00557; A61F2013/00561; A61F2013/00727; A61F2013/00731; A61F2013/00757; A61F2013/00795; A61F2013/00825; A61F2013/00855; A61F2013/00859; A61F2013/00863; A61F2013/00868; A61F2013/00902; A61F2013/0091
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
142 words
In a dressing for a wound of a patient, comprising: a base sheet contacting the skin of base sheet having at least one opening for placement over the wound; means for securing the base sheet to the skin of a patient; and vent means for providing controlled leakage of fluid along a path from the wound through each said opening of the base sheet, said vent means comprising cover means covering said opening, said cover means permitting passage of wound fluid therethrough while reducing evaporation through said opening and thereby helping to insure a moist environment when excess wound fluid is removed from said wound; the improvement wherein the cover means comprises inner and outer sheets secured together in superposition, the inner sheet comprising an elastomeric water-swellable polymeric material, the outer sheet comprising a material which provides a barrier to water evaporation.
Claim 2
Dependent Claim
142 words
In a dressing for a wound of a patient, comprising: a base sheet contacting the skin of base sheet having at least one opening for placement over the wound; means for securing the base sheet to the skin of a patient; and vent means for providing controlled leakage of fluid along a path from the wound through each said opening of the base sheet, said vent means comprising cover means covering said opening, said cover means permitting passage of wound fluid therethrough while reducing evaporation through said opening and thereby helping to insure a moist environment when excess wound fluid is removed from said wound; the improvement wherein the cover means comprises inner and outer sheets secured together in superposition, the inner sheet comprising an elastomeric water-swellable polymeric material, the outer sheet comprising a material which provides a barrier to water evaporation.
Claim 3
Dependent Claim
19 words
The dressing of claim 1 further including means for preventing bacteria from reaching the wound along said fluid path.
Claim 4
Dependent Claim
17 words
The dressing of claim 1 further including means for absorbing the fluid passing from the vent means.
Claim 5
Dependent Claim
16 words
A dressing as defined in claim 1 wherein the inner and outer sheets are laminated together.
Claim 6
Dependent Claim
16 words
A dressing as defined in claim 1 wherein the outer sheet material is a polymeric material.
Claim 7
Dependent Claim
14 words
A dressing as defined in claim 5 wherein the polymeric material is an elastomer.
Claim 8
Dependent Claim
14 words
A dressing as defined in claim 5 wherein the polymeric material is substantially non-water-swellable.
Claim 9
Dependent Claim
13 words
A dressing as defined in claim 5 wherein the polymeric material is thermoplastic.
Claim 10
Dependent Claim
17 words
A dressing as defined in claim 1 wherein the base sheet has a plurality of said openings.
Claim 11
Dependent Claim
30 words
A dressing as defined in claim 9 wherein the vent means comprises a plurality of individual cover means, each of the cover means covering at least one of the openings.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-02-24 | 1995-08-26 | 1996-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-02-24 | 1999-08-26 | 2000-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-02-24 | 2003-08-26 | 2004-02-25 | $7700.00 | Window Closed / Lapsed |