WO2008008508A2 - Appareil de support du corps soulageant des tensions et des pressions spinales - Google Patents

Appareil de support du corps soulageant des tensions et des pressions spinales Download PDF

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Publication number
WO2008008508A2
WO2008008508A2 PCT/US2007/016024 US2007016024W WO2008008508A2 WO 2008008508 A2 WO2008008508 A2 WO 2008008508A2 US 2007016024 W US2007016024 W US 2007016024W WO 2008008508 A2 WO2008008508 A2 WO 2008008508A2
Authority
WO
WIPO (PCT)
Prior art keywords
support apparatus
body support
layer
indentation force
force deflection
Prior art date
Application number
PCT/US2007/016024
Other languages
English (en)
Other versions
WO2008008508A3 (fr
Inventor
Christopher E. Kemper
Kristi L. Sonsteby
Original Assignee
Medinnovations International, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Medinnovations International, Inc. filed Critical Medinnovations International, Inc.
Publication of WO2008008508A2 publication Critical patent/WO2008008508A2/fr
Publication of WO2008008508A3 publication Critical patent/WO2008008508A3/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
    • A47C27/14—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays
    • A47C27/142—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays with projections, depressions or cavities
    • A47C27/146—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays with projections, depressions or cavities on the outside surface of the mattress or cushion
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
    • A47C27/14—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays
    • A47C27/148—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays of different resilience
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
    • A47C27/14—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays
    • A47C27/15—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays consisting of two or more layers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/05—Parts, details or accessories of beds
    • A61G7/057—Arrangements for preventing bed-sores or for supporting patients with burns, e.g. mattresses specially adapted therefor
    • A61G7/05715—Arrangements for preventing bed-sores or for supporting patients with burns, e.g. mattresses specially adapted therefor with modular blocks, or inserts, with layers of different material
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/12—Shape memory

Definitions

  • the present invention relates generally to mattresses and cushions. More specifically, the present invention relates to an apparatus for supporting a human body in a supine, recumbent, seated or sideways-lying position in a manner that relieves tension and pressure on the spine and promotes blood circulation.
  • Conventional mattress designs such as, for example, mattresses that are constructed from hard plastic covers, thick high-density filler material, or springs, such as, for example, steel springs, can create pressure points on the shoulders, hips and thighs of a user.
  • the weight of the user compresses such a conventional mattress such that the mattress develops pressure points on the skin and at prominent bony sites of the user.
  • the resulting pressure points can impede circulation and, in turn, exacerbate compromised circulation in a user already suffering from a circulatory disorder such as, for example, diabetes and congestive heart failure.
  • a dermatologic disorder such as pressure ulcers or tissue necrosis.
  • Similar problems are also often associated with the cushions used to provide a padded seat in a wheelchair.
  • Sacral hyperextension can cause facet imbrications and associated foraminal narrowing - the leading cause of resting-induced chronic back pain and often associated with most spinal pain syndromes in the working class and the elderly — which can disrupt nerve communication and impair venous drainage and arterial flow. Poor spinal support while lying on the side can result in lateral distortion and tension in spinal joints and spinal muscles.
  • Foams can be characterized by their corresponding Indention Force Deflection (EFD) rating, otherwise known as the Indention Load Deflection (ILD), which is the international scale for memory and is based on a scale ranging from 0-100.
  • Indentation force deflection is defined as the measure of the load-bearing capacity of flexible foam. It is generally measured as the force in pounds required to compress a fifty square inch circular indenter foot into a 4 inch thick sample no smaller than 24 inches square to a stated percentage of the sampled initial height. Common TFD values are generated at 25 and 65 percent of initial height. See http://www.pfa.org/jifsg/jifsgsl5.html, incorporated herein by reference in its entirety.
  • Loss of support characteristic of low memory or conforming foams occurs as the spine, which is the body's core and warm point(s), comes in contact with the low "memory" or viscoelastic foam.
  • Low memory, conforming, or viscoelastic foams are designed to soften or lose I.F.D. rating and subsequent support as normal body heat is absorbed by the foam.
  • This low memory, conforming, or viscoelastic foam, by design becomes more viscous or liquid-like, as it absorbs and retains heat, effectively losing its memory or ability to rebound and offer support. This loss of support occurs at precisely the spinal levels that need the most support: the thoracic curve and the sacrum.
  • a variety of techniques and devices have been used to reduce incidence of pressure ulcers in medically compromised individuals and provide greater comfort to individuals confined to or spending substantial amounts of time in a bed or a wheelchair.
  • air mattress overlays, static and dynamic air mattresses, water mattress overlays, gel-like overlays, specialty beds, foam overlays, and various other types of materials and combinations of materials have been used to create new types of mattresses or to modify existing mattresses.
  • costly motorized or dynamic devices in mattresses have also been used for similar purposes. The cost, complexity, size, and/or weight of many of these products narrows the market for which such devices can be effectively or successfully offered.
  • the present invention addresses the aforementioned needs of patients and other individuals for a low-cost pressure relieving, high quality body support apparatus, such as, for example, a mattress, cushion, pad, and the like, that relieves back pain and spinal tension, promotes circulation of blood, and provides comfortable support by providing a multi-density, tissue density specific, therapeutic body support apparatus made from multiple layers of high- memory, non-conforming, or non-viscoelastic type foam that have a high rate of recovery.
  • the present invention is an efficient and cost effective non-mechanized device that meets the aforementioned needs by providing a low-cost, light-weight, durable, and easy-to-use body support apparatus.
  • the body support apparatus of the present invention provides superior tension and pressure relief to the spine and other regions of the back. Specifically, the body support apparatus provides the spinal support that is necessary for spinal decompression and optimal circulation, deeper levels of sleep, and spinal rest. Pressure and tension relief is substantially uniform along the surface of the body support apparatus.
  • the body support apparatus has a contiguous design that minimizes the existence of zones of diminished pressure or tension relief to provide substantially uniform support to the spine.
  • the body support apparatus generally comprises a core layer of relatively high-density, high-memory polyurethane foam, an intermediate layer of relatively high-density medium- memory polyurethane foam, and an outer layer of relatively high-density latex foam with a higher rate of recovery and memory than low-memory, conforming foams.
  • the present invention can have three or more layers of the high-density, high- memory foam, the medium-memory foam, and/or the high-density latex foam.
  • Foams with low I.F.D. ratings popularly known as low "memory" foams, not to be confused with latex foam or higher I.F.D. rated non-conforming polyurethane foams, have low rebound and/or memory characteristics as well as a low rate of recovery.
  • the inability of low memory, conforming, or viscoelastic foams to support body weight is defined by and the result of their very low I.F.D. rating.
  • Memory or conforming foams have, at best, a very low memory averaging between 5 and 20 on the scale, and a low rate of recovery.
  • This low memory rating means that all mattress or seat cushion applications bearing the low memory or conforming rating, by design, degrade in their body support characteristics with the application of sustained pressure or body heat.
  • pressure and heat points are created leaving patients who are at risk of pressure ulcers more prone to necrotic skin disorders.
  • the support layers of the present invention can facilitate the ability of the nervous system to become better able to enter a rest phase during sleep, and promote improved circulation of blood into the skin, muscles, and spinal column to more effectively reduce both spinal tension and pressure in the aforementioned tissues.
  • Figure 1 is a perspective view of a body support apparatus according to an embodiment of the present invention.
  • Figure 2 is a side view of a body support apparatus according to an embodiment of the present invention supporting a human body.
  • Figure 3 is a side view of a body support apparatus according to an embodiment of the present invention supporting a human body.
  • Figure 4 is side view of a mattress according to the prior art supporting a human body.
  • Figure 5 is a partial cross-sectional view of human spine depicting normal disc spacing and joint proximity alignment.
  • Figure 6 is a partial cross-sectional view of a human spine depicting disc compression, foramen narrowing, and facet joint overlap imbrications.
  • Figure 7 is a cross-sectional view of a lumbar disc, sacrum, and vertebra in a state of normal tension and pressure.
  • Figure 8 is a cross-sectional view of a lumbar disc, sacrum, and vertebra in a state of abnormal tension and pressure.
  • Figure 9 is a perspective view of a body support apparatus according to an embodiment of the present invention.
  • Figure 10 is a perspective view of a body support apparatus according to an embodiment of the present invention.
  • Figure 11 is a perspective view of a body support apparatus according to an embodiment of the present invention.
  • Figure 12 is a perspective view of a body support apparatus in a hospital environment according to an embodiment of the present invention.
  • Figure 13 is a perspective view of a body support apparatus used with a wheelchair seat according to an embodiment of the present invention.
  • Figure 14 is a perspective view of a body support apparatus used with a wheelchair seat according to another embodiment of the present invention.
  • Figure 15 is a sectional view of a body support apparatus according to an embodiment of the present invention.
  • Figure 16 is a cross-sectional view of a body support apparatus according to an embodiment of the present invention.
  • Figure 17 is perspective view of an insert of a body support apparatus according to an embodiment of the present invention.
  • Figure 18 is a side view of a body support apparatus according to an embodiment of the present invention.
  • Figure 19 is an exploded view of a body support apparatus according to an embodiment of the present invention.
  • Figure 20 is a cross-sectional view of a body support apparatus according to an embodiment of the present invention.
  • Figure 21 is a perspective view of a body support apparatus according to an embodiment of the present invention.
  • Body support apparatus 100 generally has multiple foam layers 120.
  • Foam layers 120 may include core layer 122, intermediate layers 124, and outer layers 126.
  • Body support apparatus 100 presents top surface 128. Top surface 128 of body support apparatus 100 generally evenly redistributes the weight of a user through foam layers 120 to minimize pressure points between the user and body support apparatus 100.
  • suitable foams according to the present disclosure exhibit generally higher memory, higher rate of recovery, and higher resistance to compression than the low-memory, conforming foams.
  • Suitable foams according to the present disclosure can include: (1) a high-density latex, such as a natural latex, that is non-conforming, non-heat sensitive, and non-viscoelastic and has a higher rate of recovery and memory than the low-memory, non-conforming foams; (2) high density, high-memory polyurethane foam which is non-conforming, non-heat sensitive, and non- viscoelastic; and (3) high-density, medium- memory polyurethane foam which is non- conforming, non-heat sensitive, and non-viscoelastic.
  • body support apparatus 100 illustrated in Figure 1 has five foam layers 120
  • body support appratus 100 can have three or more foam layers 120 without departing from the spirit of scope of the present invention.
  • core layer 122 generally has a relatively high density, high-memory
  • intermediate layers 124 generally have a relatively high density
  • medium-memory
  • outer layers 126 generally have a relatively high density, and a higher memory and rate of recovery than low- memory, non-conforming foams described above.
  • Each intermediate layer 124 is generally coextensive Iy positioned between core layer 122 and outer layer 126.
  • the density of each foam layer 120 approximates the density of a corresponding body tissue such that layer 126 approximates very nearly the density of skin and fat, layer 124 approximates the density of muscle, and layer 122 approximates the density of spinal ligaments and discs.
  • Foam layers 120 of body support apparatus 100 generally have different indentation force deflections (IFDs), discussed above.
  • IFDs indentation force deflections
  • core layer 122 generally has an IFD in a range between about 75 and about 90.
  • the TFDs of intermediate layers 124 generally can be in a range between about 29 and about 39.
  • top intermediate layer 124A has an EFD of about 19 and bottom intermediate layer 124B has an IFD of about 24.
  • body support apparatus 100 can be turned over to selectively provide more or less muscle support.
  • outer layers 126 have an IFD in a range between about 19 and about 24.
  • the upper and lower superficial layers can be formed of a latex foam material with a significantly higher rate of recovery than low-memory conforming foams.
  • One suitable latex foam is a breathable, natural latex foam material.
  • body support apparatus 100 can simultaneously provide relief and support to a user assuming a supine position, a recumbent position, or a sideways-lying position. Body support apparatus 100 can also promote circulation of the blood and prevent and treat pressure ulcers.
  • body support apparatus 100 is made from high-memory foam such that outer layer 126 is soft, yet non-collapsible, intermediate layer 124 can provide support to the musculature, and core layer 126 is resiliently hard.
  • Foam layers 120 can have the same thickness or different thicknesses. Referring to foam layers 120 making up body support apparatus 100, core layer 122 is generally the thickest foam layer 120, while outer layers 126 are generally the thinnest foam layers 120.
  • Body support apparatus 100 distributes the weight of a user over top surface 128 while still providing support to spinal region 130 of the user. Specifically, body support apparatus 100 maintains proper curvature of spine 132 and orientation of sacrum 134 of a user, such as, for example, a user in the supine position, as depicted in Figures 2-3. Body support apparatus 100 contiguously and uniformly supports spinal region 130 of a user with multiple cushioning components, or foam layers 120. By distributing the weight of the user, body support apparatus 100 minimizes the existence of pressure points that can lead to compromised circulation, sacral hyperextension, and general discomfort. In contrast, conventional mattresses 200 can promote exaggerated curving of spine 132 of a user in the supine position, as depicted in Figure 4.
  • body support apparatus 100 has five foam layers 120, including single core layer 122, two intermediate layers 124, and two outer layers 126, as depicted in Figure 2. By having multiple intermediate and outer layers 124, 126, body support apparatus 100 can be reversible.
  • support pad has three foam layers, including single core layer 122, single intermediate layer 124, and single outer layer 126, as depicted in Figure 3.
  • Other embodiments of the present invention can have more or fewer foam layers 120 without departing from the spirit of scope of the present invention.
  • the existence of multiple foam layers 120 in body support apparatus 100 reduce the incidence of pressure points between top surface 128 of body support apparatus 100 and a user.
  • Foam layers 120 may be attached to each other in any number of ways. Generally, foam layers 120 are joined to one another by a continuous adhesive bonding between layers 120. In an example embodiment, foam layers 120 are attached to other foam layers 120 with a chemical adhesive. In one embodiment, foam layers 120 are attached using a water-based, permanent flexible, non-toxic adhesive covering at least a portion of the interface of each foam layer 120. In another embodiment, foam layers 120 are frictionally held together by the surfaces of each foam layer 120.
  • outer layer 126 presents top surface 128 of body support apparatus 100 on which a user can position him or herself in a supine, recumbent, or sideways-lying position.
  • Outer layers 126 present a tactile-comfort layer to the user and are generally self- ventilating, soft, non-collapsible, insensitive to heat, and able to provide continuous support.
  • outer layers 126 of body support apparatus 100 provide tactile comfort and dermal support to a user by having a density that is substantially similar to the density of human skin and subcutaneous tissue.
  • outer layers 126 are made from latex foam.
  • Outer layers 126 can have a thickness in a range of about one inch to about two inches. In an example embodiment, outer layers 126 have a thickness of approximately one inch. The density of outer layers 126 can be varied so as to provide more or less support to the skin and subcutaneous tissue.
  • intermediate layers 124 are situated between core layer 122 and outer layers 126.
  • intermediate layers 124 provide a muscle-support and muscle- comfort layer to a user by having a medium-memory rebound while maintaining continuous firmer high-density support.
  • intermediate layers 124 can provide such musculature comfort and support by having a medium-memory rebound while maintaining continuous firmer medium-memory support.
  • intermediate layers 124 are made of polyurethane.
  • Intermediate layers 124 can have a thickness of between about two inches and about four inches.
  • intermediate layers 124 have a thickness of approximately 2.5 inches and have a density of approximately 2.5-3.0 pounds per cubic foot. Intermediate layers 124 can thereby support the denser and heavier muscle tissue located below the skin.
  • core layer 122 is situated between intermediate layers 124 or beneath one intermediate layer 124.
  • Core layer 122 enables support pad 110 to properly support spine 132 of a user, as depicted in Figures 2-3.
  • core layer 122 impedes the pelvis (not shown) and sacrum 134 from sagging into hyperextension, as depicted in Figure 5.
  • conventional mattress 200 tends to facilitate sagging of the pelvis (not shown) and sacrum 164 into hyperextension.
  • sacrum 134 and vertebra 136 form overlap region 138 and gap 139.
  • overlap regions 138 and gaps 139 are formed between vertebrae 136.
  • overlap regions 138 are nerve foramina.
  • core layer 122 By impeding hyperextension, core layer 122 thereby minimizes narrowing of nerve foramina due to excessive spinal joint overlap, such as can occur when a user positions him or herself in a supine position.
  • core layer 122 When the user positions himself or herself in a sideways position, core layer 122 similarly reduces tension and pressure on the spinal nerves by minimizing spinal sag that can cause the nerve foramina in overlap regions 138 to become offset.
  • Core layer 122 generally impedes hyperextension and reduces tension and pressure on the spinal nerves by having a density that can support the spine of a user weighing up to approximately four-hundred pounds.
  • core layer 122 is made from high-density polyurethane.
  • Core layer 122 may have a thickness in the range of about two inches to about five inches and has a density of approximately 2.5-3.0 pounds per cubic foot.
  • core layer 122 has a thickness of approximately two inches and has a density of approximately 2.5-3.0 pounds per cubic foot.
  • Core layer 122 thereby supports the denser and heavier spinal joint tissues where the nerves exit the spine by maintaining continuous support necessary for spinal relaxation and decompression.
  • body support apparatus 100 can include removable cover 140.
  • Removable cover 140 can be made from any number of materials that do not materially affect the IFD of foam layers 120 or the overall compressive and supportive characteristics of body support apparatus 100, such as, for example, velour, natural wool blends, and other suitable materials.
  • removable cover 140 is washable and substantially encloses foam layers 120.
  • removable cover 140 can be made from a material or contain an additive or treatment, or both, having anti-microbial characteristics or providing a self-ventilating liquid-barrier inner lining.
  • removable cover 140 comprises a fire-retardant natural wool blend.
  • body support apparatus 100 can include a safety cover 150 in another embodiment.
  • safety cover 150 can be made from a material or contain an additive or treatment, or both, having fire-retardant or fire-resistant qualities.
  • safety cover 150 meets or exceeds relevant life safety code requirements for health care institutions, such as, for example, applicable state and federal governmental laws, rules, and administrative regulations.
  • Removable cover 140 and safety cover 150 can be secured around foam layers 120 in any number of ways.
  • removable cover 140 or safety cover 150 is secured around foam layers 120 by a zipper mechanism.
  • removable cover 140 or safety cover 150 is secured around foam layers by buttons, snaps, hook-and-loop fasteners, or other suitable fastening members.
  • body support apparatus 100 rests upon foundation 160, as depicted in Figure 11.
  • Foundation 160 generally includes top surface 162 and bottom surface (not shown). Foundation 160 may be made from any substantially rigid structure. When body support apparatus 100 is rested upon foundation 160, bottom surface (not shown) of body support apparatus 100 is substantially coextensive with top surface 162 of foundation 160.
  • foundation 160 is formed from box spring 164 and foundation cover 166, as depicted in Figure 11. In another embodiment, foundation 160 is formed from box spring 164 or foundation cover 166.
  • Body support apparatus 100 and foundation 160 may conformingly fit on frame 169, as depicted in Figure 11.
  • foundation cover 166 can be placed on top of box spring 164, while body support apparatus 100 can be placed on top of foundation cover 166.
  • Foundation cover 166 may be made of any substantially rigid material that conforms to the bottom surface of body support apparatus 100 and may be selected to have any number of thicknesses.
  • foundation cover 166 is made from plywood having a thickness of approximately five-eighths of one inch.
  • box spring 164 and foundation cover 166 may have any number of sizes and shapes, box spring 164 and foundation cover 166 generally have the same size and shape as body support apparatus 100.
  • body support apparatus 100 may be constructed so as to fit onto gumey 170 or other apparatus design to accommodate an individual in a supine position, as depicted in Figure 12. In another embodiment, body support apparatus 100 may be constructed so as to fit the seat of wheelchair 180, as depicted in Figure 13-14. In another embodiment, body support apparatus 100 can be constructed to fit specialty institutional chairs for medically compromised individuals.
  • foam layers 120 may be contoured so as to integrate head-support region 182 and neck-support region 184 into body support apparatus 100.
  • Head-support region 182 and neck-support region 184 may be integrated into a mattress.
  • head-support region 182 region 182 and neck-support region 184 may be integrated into pillow 190, as depicted in Figure 15.
  • body support apparatus 100 includes pressure-relief mattress 200.
  • pressure-relief mattress 200 has a similar gradient created by tiered layers of tissue density- specific pressure relieving layers of foam and a relief zone with the tiered layers.
  • pressure-relief mattress 200 has bottom layer 202, top layer 204, at least two intermediate inserts 206, and relief zone 208.
  • Bottom layer 202 is substantially planar to accommodate a box spring, platform, or other support of a bed.
  • Intermediate inserts 206 are substantially wedge-shaped, as depicted in Figure 17, to facilitate a bumper-like edge or ridge 210.
  • Top layer 204 is substantially non-planar to accommodate for intermediate inserts 206.
  • Relief zone 208 is coplanar with the at least two intermediate inserts 206 and situated between top layer 204 and bottom layer 202.
  • pressure-relief mattress 200 can further include cut-away section 212 in ridge 210 to accommodate a user's limbs, such as, for example, an arm. Cut-away section 212 provides an area for resting an arm and/or extending the arm beyond the edge of pressure-relief mattress 200.
  • the structure of the embodiment depicted in Figures 16-19 may reduce the risk that a patient will roll out of bed and suffer an injurious fall.
  • pressure-relief mattress 200 includes bottom layer 222, intermediate layer 224, and top layer 226.
  • Bottom layer 222 has first major surface 228 and second major surface 230.
  • Bottom layer 222 comprises notch 232 at any point along the longitudinal axis of second major surface 230.
  • Notch 232 extends substantially through bottom layer 222 to act as a hinge for bed inclination adjustment.
  • the annotated dimensions in Figure 20 are examples and are not to be considered limiting in any manner.
  • Pressure-relief mattress 200 is depicted in Figure 21, as set forth in U.S. Provisional Application 60/830,363. The dimensions in Figure 21 are examples and are not to be considered to be limiting in any manner. Pressure-relief mattress 200 provides continuous pressure relief at all points since the support is an integral part of the unique body support system. Each point of support is created by multiple cushioning components. Each foam layer 120 approximates the density of the tissue it supports.

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  • Health & Medical Sciences (AREA)
  • Nursing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Mattresses And Other Support Structures For Chairs And Beds (AREA)
  • Invalid Beds And Related Equipment (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)

Abstract

L'invention concerne un appareil de support thérapeutique comportant de multiples couches de mousse de densité et de mémoire différentes. Ledit appareil supporte de façon confortable le poids d'un utilisateur tout en minimisant les points de pression entre l'utilisateur et l'appareil de support. Chaque couche de mousse est dotée d'une densité unique et d'une mémoire unique selon le type de tissu que la couche est destinée à supporter. Une couche de mousse externe à mémoire relativement faible, faite à partir d'une mousse non visco-élastique de latex, supporte de façon substantielle la peau et le tissu sous-cutané. Une couche intermédiaire à densité relativement élevée et à mémoire moyenne, faite à partir de mousse de polyuréthane, supporte le tissu musculaire. Une couche d'âme à densité relativement élevée et à mémoire très élevée, faite à partir de mousse de polyuréthane, supporte la colonne vertébrale. Porté pendant un décubitus dorsal, en décubitus ou en position allongée sur le côté, l'appareil de support à combinaison de couches de mousse minimise l'hyperextension, favorise la circulation sanguine et améliore le confort de l'utilisateur.
PCT/US2007/016024 2006-07-12 2007-07-12 Appareil de support du corps soulageant des tensions et des pressions spinales WO2008008508A2 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US83036306P 2006-07-12 2006-07-12
US60/830,363 2006-07-12
US89949607P 2007-02-05 2007-02-05
US11/827,578 2007-07-11
US11/827,578 US20080010751A1 (en) 2006-07-12 2007-07-11 Spinal tension and pressure relieving body support apparatus

Publications (2)

Publication Number Publication Date
WO2008008508A2 true WO2008008508A2 (fr) 2008-01-17
WO2008008508A3 WO2008008508A3 (fr) 2008-10-09

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WO (1) WO2008008508A2 (fr)

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