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US4962769A
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US
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Use of bubble packaging film for relieving decubitus ulcers or pressure ulcers
Assignee: PREVENT PRODUCTS Inc E-502 MEADOWBROOK MEDICAL BLDG 6490 EXCELSIOR BLVD ST LOUIS PARK MN 55426 A CORP OF
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Filing: 1989-03-20
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Granted: 1990-10-16
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Expires: 2009-03-20
Abstract
Abstract Body fluid absorbing cushioning means for use by invalids and bed-ridden persons for absorption of body waste fluids and for relief of pressure areas on the skin. The cushioning means comprises a laminate with at least three layers including an inner water absorbent layer, an outer generally water impervious layer, and a center layer consisting of an array of generally closely spaced enclosures defining air supported closed cells. Further, in order to accommodate transfer of body fluids from the inner layer, bores may be formed in the center layer between individual enclosures, wherein a second water absorbing layer is provided on the opposite side of the impervious cell layer.
Inventors
- 👤 Mario C. Garcia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:48
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/53; A61F13/534; A61F13/535; A61F2013/15008; A61F2013/15024; A61F13/51; A61F13/514; A61F13/51474; A61F2013/51486; A61F2013/51492
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
150 words
Body fluid absorbing cushioning means for use by invalids and bed-ridden persons for absorption of body waste fluids and for relief of pressure areas on the skin of such persons, said fluid absorbing cushioning means comprising: (a) a laminate with at least three layers including an inner water absorbent layer, an outer generally water impervious layer, and a center layer consisting of a fixed geometrical array of abutting enclosures defining air supported closed cells with each cell defining an enclosed space of predetermined volume; (b) said fixed array including individual cells of said array of varying thickness and being disposed so as to reduce concentration of pressure forces upon predetermined areas of the body and skin surrounding the coccyx, trochanter and ischium areas of the body, and to transfer certain of the load from said predetermined areas to areas where bodily loading is normally lower than in said predetermined areas.
Claim 2
Dependent Claim
150 words
Body fluid absorbing cushioning means for use by invalids and bed-ridden persons for absorption of body waste fluids and for relief of pressure areas on the skin of such persons, said fluid absorbing cushioning means comprising: (a) a laminate with at least three layers including an inner water absorbent layer, an outer generally water impervious layer, and a center layer consisting of a fixed geometrical array of abutting enclosures defining air supported closed cells with each cell defining an enclosed space of predetermined volume; (b) said fixed array including individual cells of said array of varying thickness and being disposed so as to reduce concentration of pressure forces upon predetermined areas of the body and skin surrounding the coccyx, trochanter and ischium areas of the body, and to transfer certain of the load from said predetermined areas to areas where bodily loading is normally lower than in said predetermined areas.
Claim 3
Dependent Claim
53 words
The body fluid absorbing cushioning means as defined in claim 1 being particularly characterized in that individual cells within said array are generally circular, and with varying diameters, and wherein cells of larger size are disposed where forces are greater so as to reduce the creation of high unit pressures within said cells.
Claim 4
Dependent Claim
33 words
The body fluid absorbing cushioning means as defined in claim 2 wherein the cell sizes of greater diameter are disposed in the zone covering the coccyx, trochanter and ischium areas of the body.
Claim 5
Dependent Claim
43 words
The body fluid absorbing cushioning means as defined in claim 1 being particularly characterized in that said cells are arranged in a pattern with voids arranged therealong, and wherein said closed cells are removed from the areas covering the coccyx, trochanter and ischium.
Claim 6
Dependent Claim
50 words
The body fluid absorbing cushioning means as defined in claim 1 being particularly characterized in that individual cells in said array are arranged in a generally circular pattern extending outwardly from a central locus, and with the cell size decreasing with an increase in radial spacing from said central locus.
Claim 7
Dependent Claim
26 words
The body fluid absorbing cushioning means as defined in claim 1 being particularly characterized in that cell sizes are arranged with at least four different diameters.
Claim 8
Dependent Claim
39 words
The body fluid absorbing cushioning means as defined in claim 6 being particularly characterized in that the ratio of cell diameters from larger to smaller is generally in the range of 80%, 60%, and 40% of the largest diameter.
Claim 9
Dependent Claim
33 words
The body fluid absorbing cushioning means as defined in claim 6 being particularly characterized in that said cell sizes, from larger to smaller, are in the range of 1:1, 0.82:1; 0.58:1; and 0.41:1.
Claim 10
Dependent Claim
70 words
The body fluid absorbing cushioning means as defined in claim being particularly characterized in that water absorbing layers are disposed on either side of said impervious cell layer, and wherein the cells are spaced apart, one from another, and wherein the space between said cells is perforated so as to permit water absorption from the inner water absorbing layer through said cell layer and into said outer water absorbing layer.
Claim 11
Dependent Claim
68 words
The body fluid absorbing cushioning means as defined in claim 1 being particularly characterized in that said array of generally closely spaced enclosures comprises laterally spaced apart discrete groups of such enclosures and wherein cells of a larger size are disposed generally along the central axis of said body fluid absorbing cushioning means, and wherein cells of substantially smaller sizes are in said laterally disposed groups of cells.
Claim 12
Dependent Claim
68 words
The body fluid absorbing cushioning means as defined in claim 9 being particularly characterized in that said array of generally closely spaced enclosures comprises laterally spaced apart discrete groups of such enclosures and wherein cells of a larger size are disposed generally along the central axis of said body fluid absorbing cushioning means, and wherein cells of substantially smaller sizes are in said laterally disposed groups of cells.
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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) | 1993-10-15 | 1994-04-16 | 1994-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-15 | 1998-04-16 | 1998-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-10-15 | 2002-04-16 | 2002-10-16 | $7700.00 | Window Closed / Lapsed |