US4955096A
Expired / Lapsed
US
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Anatomically contoured convoluted foam pad
Assignee: BIO CLINIC SUNRISE MEDICAL CORP
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Filing: 1989-06-28
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Granted: 1990-09-11
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Expires: 2009-06-28
Abstract
Abstract A foam pad containing slits in its upper surface is disclosed. In its preferred embodiment the pad is adapted to be positioned on a bed in a supporting relationship to a patient. The pad has head and foot supporting sections, each in the form of a convoluted checkerboard pattern of rows of peaks separated by depressions. A torso supporting section is located between the head and foot supporting sections comprising substantially parallel ribs separated by substantially parallel valleys. The slits are located on the torso supporting section, transverse to the ribs, forming a diamond-shaped area. Each slit varies in depth decreasing from the center of the pad towards the sides of the pad. Additionally, the overall depth of the slits is progressively shallower towards the head and foot supporting sections of the pad. In another embodiment, slits of the same configuration are used with a pad having a smooth upper surface which supports at least a portion of a body. The configuration of the slits cause the pad to be softer permitting the bony prominences of the body in contact with the slits, to sink deeper into the pad than other portions of the body. This substantially reduces the pressure placed on the skin covering these bony prominences thereby helping to prevent the formation of decubitus ulcers.
Inventors
- 👤 Keith Gilroy
- 👤 Gary T. Limon
- 👤 David F. Buchicchio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:13
CPC Classifications
A; A47; A47C; A47C27/00; A47C27/14; A47C27/142; A47C27/146; A47C27/148
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
233 words
An anatomically contoured pad of a size sufficient for a human body on a bed, pad being el between two pad ends and having a and lower surface, the upper surface comprising; a head supporting section, and a foot and leg supporting section, each adjacent to one of the two pad ends and each having a convoluted supporting surface of adjacent rows of peaks separated by depressions, the rows of peaks extending transversely across the width of each section and longitudinally along the length of each section with alternate rows of peaks being staggered in both the transverse and longitudinal directions to form a checkerboard pattern; and a torso supporting section intermediate the head and foot supporting sections comprising a ribbed convoluted supporting surface having substantially continuous and parallel ribs separated by substantially continuous and parallel valleys extending longitudinally between the head and foot supporting sections, and a plurality of slits in said ribbed convoluted supporting surface wherein the slits are perpendicular to the ribs, with the depth of the center slit being greatest and the relative depth of each of the remaining slits being progressively shallower towards the head and foot ends of the pad and with the depth of each slit being greatest for that portion of the slit in the center portion of the pad and the depth of each slit being progressively shallower towards the edges of the pad.
Claim 2
Dependent Claim
233 words
An anatomically contoured pad of a size sufficient for a human body on a bed, pad being el between two pad ends and having a and lower surface, the upper surface comprising; a head supporting section, and a foot and leg supporting section, each adjacent to one of the two pad ends and each having a convoluted supporting surface of adjacent rows of peaks separated by depressions, the rows of peaks extending transversely across the width of each section and longitudinally along the length of each section with alternate rows of peaks being staggered in both the transverse and longitudinal directions to form a checkerboard pattern; and a torso supporting section intermediate the head and foot supporting sections comprising a ribbed convoluted supporting surface having substantially continuous and parallel ribs separated by substantially continuous and parallel valleys extending longitudinally between the head and foot supporting sections, and a plurality of slits in said ribbed convoluted supporting surface wherein the slits are perpendicular to the ribs, with the depth of the center slit being greatest and the relative depth of each of the remaining slits being progressively shallower towards the head and foot ends of the pad and with the depth of each slit being greatest for that portion of the slit in the center portion of the pad and the depth of each slit being progressively shallower towards the edges of the pad.
Claim 3
Dependent Claim
15 words
The pad of claim 1 wherein the area containing said slits is a diamond shape.
Claim 4
Dependent Claim
15 words
The pad of claim 1 wherein the area containing said slits is a square shape.
Claim 5
Dependent Claim
15 words
The pad of claim 1 wherein the area containing said slits is a circular shape.
Claim 6
Dependent Claim
270 words
An anatomically contoured pad of a size sufficient for supporting a human body on a bed, the pad being elongated between two pad ends and having an upper and lower surface, the upper surface comprising; a head supporting section, and a foot and leg supporting section, each adjacent to one of the two pad ends and each having a convoluted supporting surface of adjacent rows of peaks separated by depressions, the rows of peaks extending transversely across the width of each section and longitudinally along the length of each section with alternate rows of peaks being staggered in both the transverse and longitudinal directions to form a checkerboard pattern; and a torso supporting section intermediate the head and foot supporting sections comprising a ribbed convoluted supporting surface having substantially continuous and parallel ribs separated by substantially continuous and parallel valleys extending longitudinally between the head and foot supporting sections; the torso supporting section having a plurality of slits in the ribbed convoluted supporting surface, the slits being perpendicular to the ribs, the depth of the center slit being the deepest of all said slits and the relative depth of each of the remaining slits being progressively shallower towards the head and foot ends of the pad, the depth of each slit being the greatest for that portion of the slit in the center portion of the pad and the depth of each slit becoming progressively shallower towards the edges of the pad said slits being approximately 2 inches apart, said center slit being approximately 14 inches in length and located approximately 40 inches from the foot end of the pad.
Claim 7
Dependent Claim
270 words
An anatomically contoured pad of a size sufficient for supporting a human body on a bed, the pad being elongated between two pad ends and having an upper and lower surface, the upper surface comprising; a head supporting section, and a foot and leg supporting section, each adjacent to one of the two pad ends and each having a convoluted supporting surface of adjacent rows of peaks separated by depressions, the rows of peaks extending transversely across the width of each section and longitudinally along the length of each section with alternate rows of peaks being staggered in both the transverse and longitudinal directions to form a checkerboard pattern; and a torso supporting section intermediate the head and foot supporting sections comprising a ribbed convoluted supporting surface having substantially continuous and parallel ribs separated by substantially continuous and parallel valleys extending longitudinally between the head and foot supporting sections; the torso supporting section having a plurality of slits in the ribbed convoluted supporting surface, the slits being perpendicular to the ribs, the depth of the center slit being the deepest of all said slits and the relative depth of each of the remaining slits being progressively shallower towards the head and foot ends of the pad, the depth of each slit being the greatest for that portion of the slit in the center portion of the pad and the depth of each slit becoming progressively shallower towards the edges of the pad said slits being approximately 2 inches apart, said center slit being approximately 14 inches in length and located approximately 40 inches from the foot end of the pad.
Claim 8
Dependent Claim
26 words
The pad of claim 5 wherein said slits are eleven in number and form the shape of a diamond on the top surface of said pad.
Claim 9
Dependent Claim
12 words
The pad of claim 5 wherein the pad comprises a foam material.
Claim 10
Dependent Claim
10 words
The pad of claim 7 wherein the foam comprises polyurethane.
Claim 11
Dependent Claim
14 words
The pad of claim 8 wherein the polyurethane foam has an open cell construction.
Claim 12
Dependent Claim
23 words
The pad of claim 7 wherein the foam has a density in the range of about 1 to about 5 lbs/ft 3 .
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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) | 1993-09-10 | 1994-03-12 | 1994-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-09-10 | 1998-03-12 | 1998-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-09-10 | 2002-03-12 | 2002-09-11 | $7700.00 | Window Closed / Lapsed |