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US3871376A Expired / Lapsed US ⏱️ 0.0 years remaining

Combination absorbent dressing and flexible cooling device

Assignee: Union Carbide Corp
•
Filing: 1974-03-13
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Granted: 1975-03-18
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Expires: 1994-03-13
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Abstract

Abstract A combination absorbent dressing and flexible cooling device which includes a cooling device superimposed over a dressing composite, and an insulating material covering said cooling device and dressing composite.

Inventors

  • 👤 Theodore F Kozak

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 20:18
CPC Classifications
A; A61; A61F; A61F7/00; A61F7/10; A61F13/00; A61F13/02; A61F13/0203; A61F7/106; A61L; A61L15/00; A61L15/16; A61L15/22; A61L15/26; A61L15/42; A61L15/52; A61F2007/0001; A61F7/02; A61F2007/0244; A61F2007/026

Claims Analysis

Total Claims: 20
Claim 1
Independent Claim 106 words
A COMBINATION ADSORBENT DRESSING AND FLEXIBLE COOLING DEVICE COMPRISING: A. A DRESSING COMPOSITE COMPRISING IN COMBINATION, A HYDROPHOBIC TOPSHEET FOR PLACEMENT ADJACENT TO THE BODY AND HAVING A PLURALITY OF VALVULAR OPENINGS THEREIN, A SUBSTANTIALLY LIQUID IMPERMEABLE BACKING SHEET, AND AN ABSORBENT MATERIAL DISPOSED BETWEEN SAID TOPSHEET AND BACKING SHEET, AND BEING CHARACTERIZED BY ITS ABILITY TO ABSORB LIQUID PASSED THROUGH SAID OPENINGS, AND A SYSTEM OF DIMPLES DISPOSED ON SAID TOPSHEET; B. A COOLING DEVICE ASSOCIATED WITH SAID DRESSING COMPOSITE COMPRISING A FLEXIBLE PACKAGING MATERIAL ENCOMPASSING AND SEALING AN INSOLUBLE HYDROPHILIC GEL; AND C. AN INSULATING MATERIAL COVERING SAID COOLING DEVICE AND SAID DRESSING COMPOSITE.
Claim 2
Dependent Claim 106 words
A COMBINATION ADSORBENT DRESSING AND FLEXIBLE COOLING DEVICE COMPRISING: A. A DRESSING COMPOSITE COMPRISING IN COMBINATION, A HYDROPHOBIC TOPSHEET FOR PLACEMENT ADJACENT TO THE BODY AND HAVING A PLURALITY OF VALVULAR OPENINGS THEREIN, A SUBSTANTIALLY LIQUID IMPERMEABLE BACKING SHEET, AND AN ABSORBENT MATERIAL DISPOSED BETWEEN SAID TOPSHEET AND BACKING SHEET, AND BEING CHARACTERIZED BY ITS ABILITY TO ABSORB LIQUID PASSED THROUGH SAID OPENINGS, AND A SYSTEM OF DIMPLES DISPOSED ON SAID TOPSHEET; B. A COOLING DEVICE ASSOCIATED WITH SAID DRESSING COMPOSITE COMPRISING A FLEXIBLE PACKAGING MATERIAL ENCOMPASSING AND SEALING AN INSOLUBLE HYDROPHILIC GEL; AND C. AN INSULATING MATERIAL COVERING SAID COOLING DEVICE AND SAID DRESSING COMPOSITE.
Claim 3
Dependent Claim 21 words
A combination absorbent dressing and flexible cooling device according to claim 1 wherein said hydrophobic topsheet is an ethylene ethylacrylate film.
Claim 4
Dependent Claim 39 words
A combination absorbent dressing and flexible cooling device according to claim 2 wherein said valvular openings are substantially parallel straight slits disposed in longitudinal rows, each slit being angularly disposed with respect to the longitudinal axis of each row.
Claim 5
Dependent Claim 25 words
A combination absorbent dressing and flexible cooling device according to claim 3 wherein said slits are from about 0.03 to about 0.20 inch in length.
Claim 6
Dependent Claim 28 words
A combination absorbent dressing and flexible cooling device according to claim 1 wherein said dimples have a frequency of at least 1 per square inch of absorbent area.
Claim 7
Dependent Claim 30 words
A combination absorbent dressing and flexible cooling device according to claim 1 wherein said dimples have a circular configuration with a diameter of from about 0.025 to about 0.25 inch.
Claim 8
Dependent Claim 53 words
A combination absorbent dressing and flexible cooling device according to claim 1 wherein said topsheet and said backing sheet are of substantially the same dimensions and are adhered to each other around their periphery to Form an integral structure having the absorbent material substantially enclosed and sandwiched between the topsheet and backing sheet.
Claim 9
Dependent Claim 22 words
A combination absorbent dressing and flexible cooling device according to claim 1 wherein said insoluble hydrophilic gel is insolublized poly (ethylene oxide)
Claim 10
Dependent Claim 26 words
A combination absorbent dressing and flexible cooling device according to claim 1 wherein said insulating material is adhered to said dressing composite and said cooling device.
Claim 11
Dependent Claim 160 words
A combination absorbent dressing and flexible cooling device comprising: a. an outer sheet having two end segments containing an adhesive material on the lower surfaces thereof and a middle segment; b. a dressing composite comprising in combination, a hydrophobic top sheet for placement adjacent to the body and having a plurality of valvular openings therein, a substantially liquid impermeable backing sheet, and an absorbent material disposed between said top sheet and backing sheet and being characterized by its ability to absorb liquid passed through said openings, and a system of dimples disposed on said top sheet; c. a cooling device disposed between said outer sheet and said dressing composite comprising a flexible packaging material encompassing and sealing an insoluble hydrophilic gel; d. an insulating material disposed between said cooling device and said outer sheet; and e. a release strip disposed on the lower surface of said combination absorbent dressing and flexible cooling device in adhesive engagement with said end segments.
Claim 12
Dependent Claim 160 words
A combination absorbent dressing and flexible cooling device comprising: a. an outer sheet having two end segments containing an adhesive material on the lower surfaces thereof and a middle segment; b. a dressing composite comprising in combination, a hydrophobic top sheet for placement adjacent to the body and having a plurality of valvular openings therein, a substantially liquid impermeable backing sheet, and an absorbent material disposed between said top sheet and backing sheet and being characterized by its ability to absorb liquid passed through said openings, and a system of dimples disposed on said top sheet; c. a cooling device disposed between said outer sheet and said dressing composite comprising a flexible packaging material encompassing and sealing an insoluble hydrophilic gel; d. an insulating material disposed between said cooling device and said outer sheet; and e. a release strip disposed on the lower surface of said combination absorbent dressing and flexible cooling device in adhesive engagement with said end segments.
Claim 13
Dependent Claim 21 words
A combination absorbent dressing and flexible cooling device according to claim 10 wherein said hydrophobic topsheet is an ethylene ethylacrylate film.
Claim 14
Dependent Claim 39 words
A combination absorbent dressing and flexible cooling device according to claim 11 wherein said valvular openings are substantially parallel straight slits disposed in longitudinal rows, each slit being angularly disposed with respect to the longitudinal axis of each row.
Claim 15
Dependent Claim 25 words
A combination absorbent dressing and flexible cooling device according to claim 12 wherein said slits are from about 0.03 to about 0.20 inch in length.
Claim 16
Dependent Claim 28 words
A combination absorbent dressing and flexible cooling device according to claim 10 wherein said dimples have a frequency of at least 1 per square inch of absorbent area.
Claim 17
Dependent Claim 30 words
A combination absorbent dressing and flexible cooling device according to claim 10 wherein said dimples have a circular configuration with a diameter of from about 0.025 to about 0.25 inch.
Claim 18
Dependent Claim 53 words
A combination absorbent dressing and flexible cooling device according to claim 10 wherein said topsheet and said backing sheet are of substantially the same dimensions and are adhered to each other around their periphery to form an integral structure having the absorbent material substantially enclosed and sandwiched between the topsheet and backing sheet.
Claim 19
Dependent Claim 22 words
A combination absorbent dressing and flexible cooling device according to claim 10 wherein said insoluble hydrophilic gel is insolubilized poly (ethylene oxide)
Claim 20
Dependent Claim 26 words
A combination absorbent dressing and flexible cooling device according to claim 10 wherein said insulating material is adhered to said dressing composite and said cooling device.

References Cited (Backward Citations)

US2573791A Cited
US3074250A Cited
US3463161A Cited
US3545230A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-03-17 1978-09-16 1979-03-18 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-03-17 1982-09-16 1983-03-18 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-03-17 1986-09-16 1987-03-18 $7700.00 Window Closed / Lapsed

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