US4884563A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-stretching wound dressing and method for making same
Assignee: Ferris Pharmaceuticals Inc
•
Filing: 1985-11-12
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Granted: 1989-12-05
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Expires: 2005-11-12
Abstract
Abstract A non-stretchable wound dressing has a flexible, non-stretching cover sheet having adhesive on one side thereof, and having two spaced strip-form gripping tabs at opposite ends thereof. The cover sheet covers a urethane wound dressing with the adhesive of the cover sheet being in contact with the urethane, and the urethane having an adhesive layer on an opposite side thereof. For storage and prior to application to a patient, the adhesive of the urethane wound dressing is in contact with a releasable surface of a carrier, such as a cardboard. For application to a patient, one of the cover sheet gripping tabs is pulled so as to release the cover sheet and wound dressing from the carrier, the cover sheet preventing stretching of the wound dressing. The combination is then applied to a patient, with the adhesive of the wound dressing in contact therewith, again the cover sheet preventing stretching of the wound dressing. The other gripping tab of the cover sheet is then pulled to separate the cover sheet from the wound dressing, leaving the wound dressing on the patient with no stretching thereof. An optional third gripping tab and minor cover sheet may be located beneath the second gripping tab. The first and second tabs may contain a patient binding adhesive layer to allow use of the cover sheet as an occluding wound dressing. A method for the continuous production of a series of such wound dressings permits all components thereof to be fed from rollers, with no alignment or stamping in registry being necessary, thereby greatly increasing the speed and decreasing the cost per unit of the wound dressing.
Inventors
- 👤 Robert W. Sessions
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:51
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/02; A61F13/023; A61F2013/00361; A61F2013/00544; A61F2013/00727; A61F2013/00748; A61F2013/00761; A61F2013/0077; A61F2013/00774; A61F2013/00795; A61F2013/008; A61F2013/00817; A61F2013/00829; A61F2013/00855; A61F2013/00876; A61F2013/00885; A61F2013/00897; A61F2013/00902; A61F2013/00906; A61F2013/0091; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1089; Y10T156/1092; Y10T156/1093; Y10T156/1095; Y10T156/12; Y10T156/1317; Y10T156/1322; Y10T156/133; Y10T156/17; Y10T156/1702; Y10T156/1712; Y10T156/1734; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31573; Y10T428/3158
Claims Analysis
Total Claims: 39
Claim 1
Independent Claim
176 words
A non-stretching wound dressing comprising: a carrier sheet; a film sheet having an adhesive layer on one side thereof adjacent said carrier sheet; a cover sheet adhered to said film sheet; a first gripping tab separate from and directly attached to one end of said cover sheet for separating said carrier sheet from said film sheet with the cover sheet remaining affixed thereto, said adhesion between said cover sheet and said film sheet being selected such that pulling said first tab releases said film sheet from said carrier sheet with the cover sheet remaining affixed to said film sheet; a second gripping tab separate from and directly attached to an opposite end of said cover sheet for releasing said cover sheet from said film sheet, said adhesion between said cover sheet and said film sheet being further selected such that after application of the adhesive side of said film sheet to a patient, pulling on said second tab releases said cover sheet from said film sheet with said film sheet remaining in place on said patient.
Claim 2
Dependent Claim
176 words
A non-stretching wound dressing comprising: a carrier sheet; a film sheet having an adhesive layer on one side thereof adjacent said carrier sheet; a cover sheet adhered to said film sheet; a first gripping tab separate from and directly attached to one end of said cover sheet for separating said carrier sheet from said film sheet with the cover sheet remaining affixed thereto, said adhesion between said cover sheet and said film sheet being selected such that pulling said first tab releases said film sheet from said carrier sheet with the cover sheet remaining affixed to said film sheet; a second gripping tab separate from and directly attached to an opposite end of said cover sheet for releasing said cover sheet from said film sheet, said adhesion between said cover sheet and said film sheet being further selected such that after application of the adhesive side of said film sheet to a patient, pulling on said second tab releases said cover sheet from said film sheet with said film sheet remaining in place on said patient.
Claim 3
Dependent Claim
24 words
A wound dressing according to claim 1 wherein the said adhesion between said cover sheet and said film sheet is produced by an adhesive.
Claim 4
Dependent Claim
37 words
A wound dressing according to claim 2 wherein said adhesive producing the adhesion between said cover sheet and said film sheet comprises a second adhesive layer on one side of said cover sheet adjacent said film sheet.
Claim 5
Dependent Claim
20 words
A wound dressing according to claim 1 wherein said first tab is located on the underside of said cover sheet.
Claim 6
Dependent Claim
21 words
A wound dressing according to claim 1 wherein said first tab is located on the upper side of said cover sheet.
Claim 7
Dependent Claim
26 words
A wound dressing according to claim 1 including a means for promoting release of said cover sheet from said film sheet positioned beneath said second tab.
Claim 8
Dependent Claim
17 words
A wound dressing according to claim 6 wherein said means for promoting release is a gauze strip.
Claim 9
Dependent Claim
17 words
A wound dressing according to claim 6 wherein said means for promoting release is a paper strip.
Claim 10
Dependent Claim
29 words
A wound dressing according to claim 6 wherein said means for promoting release is an inked zone containing an adhesive deadening agent on said adhesive on said cover sheet.
Claim 11
Dependent Claim
49 words
A wound dressing according to claim 6 wherein said cover sheet is adhered to said film sheet by an adhesive and said means for promoting release is a series of spaced inked zones containing an adhesive deadening agent on said adhesive adhering said cover sheet to said film sheet.
Claim 12
Dependent Claim
22 words
A wound dressing according to claim 10 wherein said inked zones containing an adhesive deadening agent are a series of parallel lines.
Claim 13
Dependent Claim
40 words
A wound dressing according to claim 6 wherein said cover sheet is adhered to said film sheet by an adhesive and said means for promoting release is a mesh interposed between said cover sheet adhering adhesive and said film sheet.
Claim 14
Dependent Claim
41 words
A wound dressing according to claim 6 wherein said cover sheet is adhered to said film sheet by an adhesive and said means for promoting release is a plastic strip interposed between said cover sheet adhering adhesive and said film sheet.
Claim 15
Dependent Claim
43 words
A wound dressing according to claim 6 wherein said cover sheet is adhered to said film sheet by an adhesive and said means for promoting release is a strip of perforated paper positioned between said cover sheet adhering adhesive and said film sheet.
Claim 16
Dependent Claim
79 words
A wound dressing according to claim 6 wherein said means for promoting release of said cover sheet comprises: a third gripping tab attached to a second minor cover sheet sealing the edge of said film sheet, said third gripping tab and minor cover sheet being located beneath said second tab such that the film sheet adhesive layer along the edge of said film sheet cannot leak out to contact the adhesive layer on one side of the cover sheet.
Claim 17
Dependent Claim
30 words
A wound dressing according to claim 15 in the form of a surgical drape suitable for application to the surface of a patent and wherein said film sheet is polyethylene.
Claim 18
Dependent Claim
30 words
A wound dressing according to claim 15 wherein said first gripping tab, said second gripping tab and said third gripping tab contain an indicia indicating the sequential order of use.
Claim 19
Dependent Claim
14 words
A wound dressing according to claim 15 wherein the said film sheet is polyurethane.
Claim 20
Dependent Claim
58 words
A wound dressing according to claim 1 wherein strengths of adhesion are selected such that a first adhesion between said carrier sheet and said film sheet is less than a second adhesion between said cover sheet and said film sheet and the second adhesion is less than a third adhesion between said film sheet and a biological surface.
Claim 21
Dependent Claim
13 words
A wound dressing according to claim 19 wherein said biological surface is skin.
Claim 22
Dependent Claim
38 words
A wound dressing according to claim 19 wherein said first adhesion strength is about 0.01 to 4 grams/inch, said second adhesion strength is about 2 to 7 ounces/inch, and said third adhesion is about 2 to 4.5 lbs/inch.
Claim 23
Dependent Claim
13 words
A wound dressing according to claim 1 wherein said film sheet is gas-permeable.
Claim 24
Dependent Claim
53 words
A wound dressing according to claim 1 wherein said first gripping tab and said second gripping tab both have a patient binding adhesive layer on one side adjacent to said carrier sheet, said patient binding adhesive layer selected such that said first gripping tab and said second gripping tab bind to said patient.
Claim 25
Dependent Claim
14 words
A wound dressing according to claim 23 wherein the said film sheet is polyurethane.
Claim 26
Dependent Claim
99 words
A method of use of the wound dressing according to claim 23 comprising: (a) removing the carrier sheet from said wound dressing; (b) applying the wound dressing to the patient such that said first gripping tab, said second gripping tab and said film sheet bind to the patient; (c) delaying removal of said first and second gripping tabs and said cover sheet for up to 96 hours; (d) removing said first and second gripping tabs and said cover sheet thereby leaving said flexible film sheet over wound area; and (e) removing said flexible film sheet from the wound area.
Claim 27
Dependent Claim
26 words
A wound dressing according to claim 1 wherein said first gripping tab and said second gripping tab contain an indicia indicating the sequential order of use.
Claim 28
Dependent Claim
25 words
A wound dressing according to claim 1 wherein the said film sheet contains an adhesive free area less than 95% of the film sheet area.
Claim 29
Dependent Claim
25 words
The wound dressing according to claim 27 wherein the said film sheet contains an adhesive free area less than 50% of the film sheet area.
Claim 30
Dependent Claim
25 words
The wound dressing according to claim 28 wherein the said film sheet contains an adhesive free area less than 30% of the film sheet area.
Claim 31
Dependent Claim
30 words
A wound dressing according to claim 1 in the form of a surgical drape suitable for application to the surface of a patient and wherein said film sheet is polyethylene.
Claim 32
Dependent Claim
14 words
A wound dressing according to claim 1 wherein the said film sheet is polyurethane.
Claim 33
Dependent Claim
27 words
A wound dressing according to claim 1 wherein said carrier sheet includes a release layer on the surface thereof adjacent said adhesive layer on said film sheet.
Claim 34
Dependent Claim
25 words
A wound dressing according to claim 1 wherein the said film sheet contains an absorbent material covering less than 95% of the film sheet area.
Claim 35
Dependent Claim
25 words
A wound dressing according to claim 33 wherein the said film sheet contains an absorbent material covering less than 50% of the film sheet area.
Claim 36
Dependent Claim
25 words
A wound dressing according to claim 34 wherein the said film sheet contains an absorbent material covering less than 30% of the film sheet area.
Claim 37
Dependent Claim
15 words
The wound dressing according to claim 33 wherein the said absorbent material contains a medication.
Claim 38
Dependent Claim
21 words
A wound dressing material according to claim 33 wherein said absorbent material results in insulating the wound area to retain warmth.
Claim 39
Dependent Claim
25 words
A wound dressing material according to claim 36 wherein the said absorbent material containing a medication is covered by a gas impermeable flexible cover sheet.
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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) | 1992-12-04 | 1993-06-05 | 1993-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-12-04 | 1997-06-05 | 1997-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-12-04 | 2001-06-05 | 2001-12-05 | $7700.00 | Window Closed / Lapsed |