Patent US4616644A successfully refreshed from Google Patents.
US4616644A
Expired / Lapsed
US
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Hemostatic adhesive bandage
Assignee: Ethicon Inc
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Filing: 1985-06-14
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Granted: 1986-10-14
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Expires: 2005-06-14
Abstract
Abstract Hemostatic adhesive bandages are disclosed wherein a very thin coating of a high molecular weight polyethylene oxide is applied to the surface of the perforated plastic film wound release cover of an adhesive bandage, in a manner compatible with commonly used high speed production techniques and equipment, which stop the bleeding faster when applied to minor cuts.
Inventors
- 👤 Lowell Saferstein
- 👤 Julius A. Lindquist
- 👤 Stephen J. Wolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:46
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/02; A61L; A61L15/00; A61L15/16; A61L15/42; A61L15/58; A61F13/0203; A61L15/22; A61L15/26; A61F2013/00361; A61F2013/00365; A61F2013/00463; A61F2013/00472; A61L2400/00; A61L2400/04
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
72 words
In an adhesive bandage of the type used on minor cuts and wounds, which consists of a pressure-sensitive adhesive coated backing having attached thereto an absorbent pad bandage portion covered with a perforated plastic film wound release cover, the improvement comprising: a very thin coating comprising a polyethylene oxide having a molecular weight of at least 600,000, on said wound release cover, thereby to improve the hemostatic effect of said adhesive bandage.
Claim 2
Dependent Claim
72 words
In an adhesive bandage of the type used on minor cuts and wounds, which consists of a pressure-sensitive adhesive coated backing having attached thereto an absorbent pad bandage portion covered with a perforated plastic film wound release cover, the improvement comprising: a very thin coating comprising a polyethylene oxide having a molecular weight of at least 600,000, on said wound release cover, thereby to improve the hemostatic effect of said adhesive bandage.
Claim 3
Dependent Claim
18 words
The adhesive bandage of claim 1, wherein the polyethylene oxide has a molecular weight of at least 4,000,000.
Claim 4
Dependent Claim
33 words
The adhesive bandage of claim 2, wherein the add-on weight of the polyethylene oxide is from 1%-10% of the weight of the perforated plastic film wound release cover to which it is added.
Claim 5
Dependent Claim
28 words
The adhesive bandage of claim 3, wherein the add-on weight of the polyethylene oxide is from 2%-8% of the weight of the perforated plastic film wound release cover.
Claim 6
Dependent Claim
21 words
The adhesive bandage of claim 3, wherein the wound release cover is made from polyethylene, polypropylene or polyester perforated plastic film.
Claim 7
Dependent Claim
11 words
The adhesive bandage of any of claims 1-5 in sterile form.
Claim 8
Dependent Claim
64 words
A hemostatic adhesive bandage comprising a backing material, a pressure-sensitive adhesive coating on one side of said backing material, an absorbent pad secured to said side of said backing material, a perforated film wound release cover overlying said absorbent pad, and on the outer surface of said wound release cover a very thin coating comprising polyethylene oxide having molecular weight of at least 600,000.
Claim 9
Dependent Claim
64 words
A hemostatic adhesive bandage comprising a backing material, a pressure-sensitive adhesive coating on one side of said backing material, an absorbent pad secured to said side of said backing material, a perforated film wound release cover overlying said absorbent pad, and on the outer surface of said wound release cover a very thin coating comprising polyethylene oxide having molecular weight of at least 600,000.
Claim 10
Dependent Claim
91 words
A process for improving the hemostasis effect of an adhesive bandage of the type used on minor cuts and wounds which consists of a pressure-sensitive adhesive coated backing covered with a perforated plastic film wound release cover comprising carrying out all steps otherwise used to manufacture said adhesive bandage, but additionally dissolving apolyethylene oxide having a molecular weight of at least 600,000 in a solvent, coating the resultant solution on the wound release cover, evaporating off the solvent leaving a very thin coating of polyethylene oxide on the wound release cover.
Claim 11
Dependent Claim
91 words
A process for improving the hemostasis effect of an adhesive bandage of the type used on minor cuts and wounds which consists of a pressure-sensitive adhesive coated backing covered with a perforated plastic film wound release cover comprising carrying out all steps otherwise used to manufacture said adhesive bandage, but additionally dissolving apolyethylene oxide having a molecular weight of at least 600,000 in a solvent, coating the resultant solution on the wound release cover, evaporating off the solvent leaving a very thin coating of polyethylene oxide on the wound release cover.
Claim 12
Dependent Claim
20 words
A process of claim 8, wherein the concentration of polyethylene oxide dissolved in the solvent is from 0.5 to 65%.
Claim 13
Dependent Claim
13 words
The process of claim 9, wherein said concentration is from 1.0 to 3.0%.
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) | 1989-10-13 | 1990-04-14 | 1990-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-10-13 | 1994-04-14 | 1994-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-10-13 | 1998-04-14 | 1998-10-14 | $7700.00 | Window Closed / Lapsed |