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USRE33353E Expired / Lapsed US ⏱️ 0.0 years remaining

Thin film surgical dressing with delivery system

Assignee: 3M Co
•
Filing: 1989-05-31
•
Granted: 1990-09-25
•
Expires: 2009-05-31
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Abstract

Abstract A pressure sensitive adhesive composite with a delivery system having particular benefit in application of very thin backings such as high moisture vapor permeable films widely used as medical dressings is disclosed. The composite has a backing coated with adhesive on at least a portion of the backing and liner over the adhesive. At least one edge of the backing is a delivery strip which is separable from the remainder of the backing. The liner is securely adhered to the delivery strip and releaseably adhered to the remainder of the adhesive coated backing. The bond between the a liner and the delivery strip is strong enough that the delivery strip will separate from the remainder of the backing before it will separate from the liner.

Inventors

  • 👤 Steven B. Heinecke

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 18:52
CPC Classifications
A; A61; A61L; A61L15/00; A61L15/16; A61L15/42; A61L15/58; A61F; A61F13/00; A61F13/02; A61F13/023; A61F2013/00361; A61F2013/00795; A61F2013/008; A61F2013/00808; A61F2013/00817; A61F2013/00846; A61F2013/00855; A61F2013/00868; A61F2013/00902; A61F2013/0091; A61F2013/00982; Y; Y10; Y10T; Y10T428/00; Y10T428/14; Y10T428/1462; Y10T428/24; Y10T428/24273; Y10T428/24281; Y10T428/24322; Y10T428/24777; Y10T428/28; Y10T428/2839; Y10T428/2848

Claims Analysis

Total Claims: 13
Claim 1
Independent Claim 130 words
An adhesive composite comprising a backing wherein at least one edge of the backing is a delivery strip which is separable by perforations from the remainder of the backing; a pressure sensitive adhesive coated on at least a portion of one surface of the backing; and a liner which is adhered to the delivery strip with sufficient tenacity to result in separation along the perforations of the delivery strip from the remainder of the backing before the liner separates from the delivery strip and which liner is releasably adhered to the remainder of the backing.Iadd., wherein the liner is strip coated with releasing agent such that the portion contacting the delivery strip is free of releasing agent and the portion contacting the remainder of the film has releasing agent. .Iaddend.
Claim 2
Dependent Claim 130 words
An adhesive composite comprising a backing wherein at least one edge of the backing is a delivery strip which is separable by perforations from the remainder of the backing; a pressure sensitive adhesive coated on at least a portion of one surface of the backing; and a liner which is adhered to the delivery strip with sufficient tenacity to result in separation along the perforations of the delivery strip from the remainder of the backing before the liner separates from the delivery strip and which liner is releasably adhered to the remainder of the backing.Iadd., wherein the liner is strip coated with releasing agent such that the portion contacting the delivery strip is free of releasing agent and the portion contacting the remainder of the film has releasing agent. .Iaddend.
Claim 3
Dependent Claim 12 words
The composite of claim 1 wherein the backing is a polymeric film.
Claim 4
Dependent Claim 30 words
The adhesive composite of claim 2 wherein the adhesive coated film has moisture/vapor transmission rate of at least 300 g/m 2 /24 hrs/37° C./100-10% RH and the adhesive is biocompatible.
Claim 5
Dependent Claim 48 words
The adhesive composite of claim 3 wherein the film is transparent. .[.5. The adhesive composite of claim 2 wherein the liner is strip coated with releasing agent such that the portion contacting the delivery strip is free of releasing agent and the portion contacting the remainder of the
Claim 6
Dependent Claim 11 words
film has releasing agent..]. 6. The adhesive composite of claim .[.5.].
Claim 7
Dependent Claim 32 words
.Iadd.1 .Iaddend.wherein the releasing agent is silicone. 7. The adhesive composite of claim .[.5.]. .Iadd.1 .Iaddend.wherein the adhesion of the pressure sensitive adhesive coated on the delivery strip to the liner is
Claim 8
Dependent Claim 21 words
increased by irradiation. 8. The adhesive composite of claim 7 wherein the pressure sensitive adhesive is a copolymer of iso-octylacrylate and
Claim 9
Dependent Claim 54 words
acrylamide. 9. The adhesive composite of claim 2 wherein the film has two delivery strips at opposing edges of the film and the liner is comprised of at least a first segment and a second segment wherein the first segment is adhered to one delivery strip and the second segment is adhered to the
Claim 10
Dependent Claim 27 words
opposing delivery strip. 10. The adhesive composite of claim 2 wherein the film has a delivery strip at one edge and pull tab at the opposing edge.
Claim 11
Dependent Claim 25 words
. The adhesive composite of claim 10 wherein the pull tab is releasably adhered to the film with greater tenacity than the adhesion of releasable
Claim 12
Dependent Claim 163 words
portions of the liner. 12. A method of applying a thin flexible adhesive coated film to a substrate wherein the film has a delivery strip along at least one edge thereof which is separable from the remainder of the film and a liner adhered to the adhesive-coated surface of the film which liner is adhered to the delivery strip portion of the film with sufficient tenacity to result in separation of the delivery strip from the remainder of the film before the liner-delivery strip bond fails and which is releasably adhered to the remainder of the film.Iadd., wherein the liner is strip coated with releasing agent such that the portion contacting the delivery strip is free of releasing agent and the portion contacting the remainder of the film has releasing agent, .Iaddend.comprising: removing the liner from the substrate contacting surface of film; placing the substrate contacting surface in intimate contact with the skin; and separating the liner and delivery strip from the film.
Claim 13
Dependent Claim 163 words
portions of the liner. 12. A method of applying a thin flexible adhesive coated film to a substrate wherein the film has a delivery strip along at least one edge thereof which is separable from the remainder of the film and a liner adhered to the adhesive-coated surface of the film which liner is adhered to the delivery strip portion of the film with sufficient tenacity to result in separation of the delivery strip from the remainder of the film before the liner-delivery strip bond fails and which is releasably adhered to the remainder of the film.Iadd., wherein the liner is strip coated with releasing agent such that the portion contacting the delivery strip is free of releasing agent and the portion contacting the remainder of the film has releasing agent, .Iaddend.comprising: removing the liner from the substrate contacting surface of film; placing the substrate contacting surface in intimate contact with the skin; and separating the liner and delivery strip from the film.

References Cited (Backward Citations)

US3645835A Cited
US4080969A Cited
US4414970A Cited
EP0051935A2 Cited
US4420519A Cited
US4413621A Cited
EP0120570A1 Cited
US4513739A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1993-09-24 1994-03-26 1994-09-25 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1997-09-24 1998-03-26 1998-09-25 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2001-09-24 2002-03-26 2002-09-25 $7700.00 Window Closed / Lapsed

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