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Publication numberUS3674019 A
Publication typeGrant
Publication dateJul 4, 1972
Filing dateOct 23, 1970
Priority dateOct 23, 1970
Also published asCA955341A1
Publication numberUS 3674019 A, US 3674019A, US-A-3674019, US3674019 A, US3674019A
InventorsBenton H Grant
Original AssigneeGrant Airmass Corp
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Dual layer cellular inflatable pad
US 3674019 A
A dual layer cellular inflatable pad having the cells of each interfitting with the cells of the adjacent layer. The cells of one layer may be alternately inflated and deflated. The layers have a manifold across and adjacent the longitudinal cell ends with a small continuation of the cells on the end sealed side of the manifold to prevent arching or curling of the pad.
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Description  (OCR text may contain errors)

3,674,019 July 4, 1972 United States Patent Grant DUAL LAYER CELLULAR INFLATABLE PAD 3,199,124 8/1965 128/33 X FOREIGN PATENTS OR APPLICATIONS 1,023,097 3/1966 GreatBritain...........................128/33 [72] Inventor: Benton II. Grant, Stamford, Conn.

[73] Assignee:

Grant Airlnass Corporation, Stamford, Conn Primary Examiner-L. W. Trapp Attorney-Blair, St. Onge and Mayers [22] Filed: Oct. 23, 1970 [21] Appl.No.: 83,269

ABSTRACT A dual layer cellular inflatable pad having the cells of each in- .128/33 1/00 [58] FieldolSearch... ............................128/24,24.1,33,64

51 lnt.Cl.

9 Claims, 9 Drawing Figures [56] References Cited UNlTED STATES PATENTS 3,008,465 11/1961 Gal P'A'TENTEnJuL 4 I972 3,674,019

sum 10F 4 M 16 0 v INVENTOR. a j Benin A. 0mm? P'A'TENTEnJuL 41972 SHEET 2 0F 4 INVENTOR. Ban 7071 17 Gm iii PATENTEDJUL 41972 SHEET 3 BF 4 INVENTOR. 36222022 A! Gran? W 4% "4 Arron/Md PATENTEDJuL 41972 3,;674,0l9

SHEET nor 4 INVENTOR. 2 6117071 Al Grail? BACKGROUND OF THE INVENTION This invention relates to a dual layer cellular pad for supporting the human body and particularly to such a dual layer cellular inflatable pad wherein at least one of the layers may have a plurality of alternately inflatable cells which are inflatable at relatively low pressure to support a humanbody and which minimize lateral or shear movement of the skin as the alternating inflation takes place.

' Persons suffering from serious and prolonged illnesses or injury may have to remain substantially motionless for extended periods of time either in a bed or in some other type of support such as a wheel chair. During such long periods of motionlessness, a common problem for such convalescing patients is the occurrence of decubitus ulcers appearing on the skin of the patient, commonly known as bed sores. The decubitus ulcers may be formed because of a prolonged deficiency in blood circulation at certain pressure points of the patients body upon which he is resting. The decubitus ulcers are unsightly, painful and give riseto patterns of infection since they are open sores on the patients body. Moreover, decubitus ulcers are difficult to heal if there is continued impairment of blood circulation around the area of the ulcer. Further, any frictional movement against the ulcers may cause them to break open and further complicate the healing process. Thus for a patient already sufferingdecubitus ulcers the shear motion between the body support and the patient's skin will complicate and retard the healing process.

There have been several prior art approaches to the prevention and/or the treatment of patients sutfering from such ulcers. One such approach has been to place the patient on a water mattress which has a large flexible envelope filled with water and upon which the patient rests. The water bed thus permits the weight of the patient to be spread over the entire body area and eliminates pressure points at which circulation would be impaired and decubitus ulcers likely to form. Such a water bed however, is expensive and is very difficult to handle due to the weight of the water in it. Further, because of the weight of the water, a supporting structure for it must be fairly expensive. Still further, such water beds are subject to leaks and puncture and sanitation problems arise because if they are to be reused they must be scrubbed and sterilized for each successive patient.

Another approach to the problem has been the provision of a pad of various blown or foamed polymeric materials with sufficient compressibility to permit a spreading of the body supporting pressure points. Such supporting pad structures, however, may be expensive and are difficult to clean when such foam covered pads are supported by alternately inflated tubes or cells. The shear effect on the patients skin from the alternate inflating and deflating of inflatable portions of the structure may also tend to reopen the healing decubitus ulcers of the patient.

Cellular alternately inflatable single layer pads have also been used without a thick foam covering but such pads also have been subject. to the problem of skin shear of the patient with the alternate inflation and deflation of the tubular cells of the pad. Such cellular pads generally require air pressures of around two pounds per square inch to support an adult human body. With the necessity for such air pressures the pads can feel relatively hard to the patient and are a source of discomfort.

In inflatable structures such as a pad or piece of furniture, a problem is encountered when a series of substantially parallel inflatable cells terminate at a manifold along an edge or end of the structure. The end area tends to fan out and causes arching of the structure along the end or edge. Thus such cellular inflatable structures do not lie flat and they are unsightly as well as being less desirable from a functional standpoint.

Accordingly, it is an object of the invention to provide a dual layer fluid supported pad which is comfortable and is relatively inexpensive to manufacture and maintain.

Another object of the invention is to provide a pad of the above structure wherein the end or edge portions thereof have an adjacent manifold for inflation and wherein the end or edge portions are substantially flat.

A further object of the invention is to provide an inflatable dual layer pad wherein the cells of the upper layer nest with and are restrained against lateral movement by the cells of the lower layer.

Other objects of the invention will in part be obvious and will in part appear hereinafter.

SUMIVIARY OF THE INVENTION The invention comprises a dual layer cellular fluid pad wherein the two layers of the pad are sealed together around their periphery in registration with the elongated cells interfitting one with another from layer to layer. At least one and preferably the lower pad may be filled with a liquid or a fluid. It has been found that the dual layer pad of the invention permits the use of substantially less pressure to support a given weight without bottoming than had heretofore been required in a single layer cellular inflatable pad. Thus the invention makes possible the use of lower pressure and provides a more comfortable pad than those prior art pads which require higher air pressure to support the human body without bottoming. The preferred material for the pad of the invention is a heat sealable polymeric material such as polyvinyl chloride. Further, the heat sealable polymer provides a pad surface which can easily be kept clean.

In the alternating pressure pad embodiment, at least one layer of the pad is formed with two air manifolds and two separate air pressure ports for inlet and exhaust. These manifolds then communicate with alternate elongated cells of the pad layer and can be inflated and deflated in timed relation to provide a therapeutic action for comfort and/or for reducing decubitus ulcers in bedridden patients. Further, the pad cell surfaces adjacent the body tend to conform to the body when the alternating deflation/inflation cycles take place, thus reducing shear on the body to prevent aggravation of decubitus ulcers in bedridden patients.

The interfitting of the elongated cells of the upper layer with those of the lower layer restrains the upper layer cells from spreading under load. Such spreading in prior art pads has been a cause of shear between the pad and the body.

Other embodiments of the invention may be used, for example, as a seat pad for truck or bus drivers or wheelchair patients wherein the alternately inflated cellular pad may be used for comfort. Further, a dual layer cellular pad may be used without the alternate inflation feature as an air mattress or seat pad in applications where the low pressure in the pad and/or reduction of shear movement relative to the skin provides more comfort.

The dual layer concept of the invention may also be applied wherein cells of each layer are statically filled with fluid and sealed, or such pads may be inflated by mouth or other pump means.

The invention accordingly comprises an article of manufacture possessing the features, properties and relation of elements which will be exemplified in the article as hereinafter described and the scope of the invention will be indicated in the claims.

DESCRIPTION OF THEDRAWINGS For a better understanding of the nature of the invention reference should be had to the following detailed description taken in connection with the accompanying drawings in which:

FIG. 1 is a broken plan view of a dual layer inflatable bed pad.

FIG. 2 is a sectional view taken along line 2-2 of FIG. 1 showing inflation of alternate cells in the upper layer.

FIG. 3 is a sectional view taken along line 3-3 of FIG. 1 showing inflation of all cells in the upper layer.

FIG. 4 is a sectional view taken along line 4-4 of FIG. 1 showing deflation of alternate cells in the upper layer in a pattern opposite that of FIG. 2.

FIG. 5 is a side elevation view of the pad shown in FIG. 1.

FIG. 6 is a sectional view taken along line 66 of FIG. 1.

FIG. 7 is a plan view partially broken away of a dual layer inflatable seat pad.

FIG. 8 is a schematic representation of the support and pressure points of a rounded object such as a human body on the dual layer pad of the invention.

FIG. 9 is a schematic representation of the cellular layers of the dual layer pad when supporting a weight having a flat surface.

Similar reference characters refer to similar parts throughout the several views of the drawings.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS The dual layer inflatable pad as shown in FIGS. 1 through 5 in general comprises an upper layer 10 and a lower layer 12 juxtaposed and sealed along at least two edges as at l4, 16. The material of the two layers is preferably a heat sealable polymeric material such as polyvinyl chloride.

The layers of the pad may be filled by a source of fluid pressure generally indicated at 18 having outlets 20, 22, 24 connected to inlets 26, 28, respectively of the dual layer pad. As shown in FIG. 1 inlet 26 is connected to supply air or other fluid to cell 32 and through its connection with manifold 31 supplies air or other fluid to alternate longitudinal cells 34, 36, etc. across the width of the upper layer of the pad. Similarly, pad inlet 30 is connected to manifold 38 to supply the alternate longitudinal cells 33, 35, 37, etc. of the upper layer of the pad. As shown in FIG. 1, the head end of the bed pad is that adjacent manifold 38 while the foot end of the pad is adjacent manifold 31. On the foot end of the pad the longitudinal cells may be further split into cells having a smaller diameter such as cells 33a and b, 35a and b, and 37a alternating with longitudinal cells of similar diameters such as 32a and b, 34a and b, and 36a. Thus in the foot end of the pad smaller diameter longitudinal portions of the cells will be alternately inflatable for therapeutic action in the leg supporting area of the pad. A greater number of smaller diameter cells in the heel area is preferred since the heels exert more pressure per unit area and should be supported on a greater number of pressure points.

At the head end of the pad the main longitudinal cells 32, 33, 34, etc. may be split into smaller diameter portions 32c and d, 34c and d, and 360, etc. for better support in the area of the manifold 38. Further, on both ends of the pad adjacent the manifold areas the end seal lines and 42 may be undulated as shown to form continuations of the cellular structure of the main body of the pad.

As best seen in FIG. 1, cell continuations 40a and 42a are inflated from the manifolds 31 and 38 respectively. It has been found that by providing such cell continuations along the pad ends that the problem of buckling or arching of the pad end has been substantially obviated. The tendency for the pad end to fan out along the manifold area and to arch is relieved because the cell continuations provide a series of small relieved areas at points 40b and 42b along the manifold.

As to the lower layer 12 the elongated cells of that layer are in fluid communication with conduit 22 through connector 28 and interfit with the longitudinal cells of the top layer. For those embodiments utilizing a fluid other than air, such as a gas or liquid such as water, connector 28 may be connected to a source for gaseous fluids or the cells of layer 12 may be prefilled with, for example water, and thus sealed. Thus as shown in FIGS. l-4 the cells of the lower layer may be kept statically inflated while the cells of the upper layer are alternately inflated and deflated as will be more fully explained hereinafter. Thus cells 44, 46, 48, 50, 52, 54, etc. of the lower layer 12 interfittingly support the upper layer cells 32, 33, 34, 35, 36, 37. etc. in the body portion of the pad. In the foot portion of the pad, as shown in FIG. 6, the lower layer cells are also formed into two longitudinal cells of smaller diameter and supportingly interfit with the adjacent smaller diameter cells of the upper layer of the pad.

In operating the pad as shown in FIGS. 1-6, the cells of the pad may be inflated at a pressure of from about 1.0 to 2.5 psi, and preferably from 1.4 to 1.8 psi from the pressure source 18. The cells of the lower layer 12 may be kept at a static pressure while the cells of upper layer 10 may be alternately inflated and deflated. All of the cells in the upper layer 10 are inflated through lines 20, 24 from air supply source 18 as shown in FIG. 3. By means of a timed valving arrangement in the supply source 18, alternate body cells 33, 35, 37, etc. are deflated while inflation pressure is maintained in alternate body cells 32, 34, 36, etc. The same inflation and deflation takes place in the corresponding smaller foot section cells as shown in FIG. 6. After a predetennined interval of, for example, four minutes, cells 33, 35, 37, etc. are inflated as shown in FIG. 3, and then alternate cells 32, 34, 36, etc. are deflated as shown in FIG. 4. After a period of again, for example, four minutes, the cells 32, 34, 36, etc. are again inflated as shown in FIG. 3, and then the alternate cells 33, 35, 37, etc. are deflated to again resume the configuration of FIG. 2. This alternating inflation and deflation cycle is continuously repeated to change the pressure points supporting a body on the top layer 10. The changing of the pressure points thus permits periodic circulation in the patient's body and greatly reduces or eliminates decubitus ulcers for bedridden patients. The air pressure required in the cells to support a body without bottoming is substantially less than that of present single layer cellular inflatable pads and provides a more comfortable body support.

As schematically shown in FIGS. 8 and 9, the cells of the dual layer pad tend to conform to the shape of the body resting upon the top layer, and with the inflation and deflation of the alternating cells of the top layer tend to adjust their shape to maintain contact without relative shear movement between the cell surface and the supported body.

The embodiment shown in FIG. 7 may be used as a seat pad and the form shown is particularly useful for convalescing patients, truck drivers, airline pilots, etc. As in the FIG. 1 embodiment, the dual layers 10a and 12a are superimposed one on another and are preferably joined together around their peripheries by a seal line 16a with the longitudinal cells of each layer interfitting adjacent cells in the adjacent layer.

Upper layer 10a comprises two manifolds 31a, 380, each connected to a plurality of alternate longitudinal cells formed by a continuous seal line 60. Thus longitudinal cells 32e, 34e, 36e, etc. are all in communication with manifold 38a and are supplied from a source of air pressure through inlet 26a. Cells 332, 35e, 37e, etc. are all connected to a source of air pressure through inlet 30a via cell 33c and manifold 31a.

As to the lower layer 12a, there may be provided two inlets 28a and b both connected through line 22a to a source of fluid, whereby cells of layer 12a may be filled together. Thus essentially the same heat sealing die may be used in the manufacture of layer 12a as is used for layer 10a. If desired a single inlet may be used for layer 12a if the cells are all to be filled from a single inlet.

In use, the seat pad shown in FIG. 7 may operate therapeutically with the connection of inlets 26a and 30a connected to alternating sources of air pressure. The sequence of inflation and deflation will be similar to that described above as to the FIG. 1 embodiment. Thus the therapeutic action of the pad in the inflation and deflation of alternate cells in the upper layer 10a contribute substantially to comfort of a person sitting thereon over extended periods of time. It enhances the circulation and comfort by alternating the pressure points supporting the weight of a person thereon. Further, since the lower pressures may be used in the dual layer pad with or without the alternating inflation feature, the pad is substantially more comfortable to sit on than are prior art single layer pads. The pad cells do not tend to separate, thus reducing relative shear movement as to the supported surface.

While a dual layer pad. having a statically filled lower layer and with alternately inflatableupper layer cells has been shown, it should be understood that a number of variations may be employed within the scope of the invention. For example, the dual layer pad may be statically inflated in both its layers as an air mattress or seat pad. Further, the cellular arrangement may be varied in a number of ways wherein the cells of the lower layer will interfit with the cells of the upper layer to tend to hold those cells from spreading under a load. In such an embodiment, lower static pressures may be employed without bottoming under load.

It should also be understood that the term inflatable as used in the specification and claims includes the term inflated and that other fluids or liquids may be used instead of air within the scope of the invention.

It will also be apparent that in a number of applications the provision of short cell continuation along the sealed edge of the manifold will alleviate buckling or arching of the structure end or edge adjacent the manifold.

It will thus be seen that the objects set forth above, among those made apparent from the preceding description, are efficiently attained and, since certain changes may be made in the above article without departing from the scope of the invention, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

It is also to be understood that the following claims are intended to cover all of the generic and specific features of the invention which, as a matter of language, might be said to fall therebetween.

Having described my invention, what I claim as new and desire to secure by Letters Patent is:

1. An inflatable pad comprising:

A. a first inflatable cellular layer having 1. a first fluid manifold means connecting a first plurality of cells for inflation and,

2. a second fluid manifold means connecting a second plurality of cells for inflation,

B. a second cellular cushioning layer alternately interfitted with the cells of said first inflatable cellular layer in tangential relationship thereto,

1. the central plane of said second layer being spaced from the central plane of said first layer, and

C. inflation inlet means connected to said first and second fluid manifold means of said first layer, said second cushioning layer acting to support said first inflatable cellular layer.

2. The inflatable pad defined in claim 1 wherein said first and second cells of said first layer are elongated substantially over a lateral dimension of said pad in alternating parallel relationship and said cells of said second layer are similarly elongated and interposed in a parallel relationship with said cells of said first layer.

3. The inflatable pad as defined in claim 2 wherein said elongated cells are provided with branching ends terminating at a side of said manifold from the main body of said layer, with said manifold being adjacent an edge of said layer and wherein there are provided cell extensions on the other side of 6 said manifold to alleviate buckling of said layer along said manifold when inflated.

4. The inflatable pad as defined in claim 1 wherein said inflation means comprises fluid pump means and valve means for alternately inflating and deflating said first and second cells of said first layer.

5. An inflatable pad assembly comprising:

A. a first inflatable layer having 1. a plurality of elongated inflatable cells, 2. first and second fluid manifold means for alternate independent inflation of said cells,

B. a second inflatable layer having 1; a plurality of elongated inflatable cells, 2. said second layer cells being of substantially the same diameter and length and being spaced apart substantiallgrtshe same as said first layer cells, C. said t and second inflatab e layers being juxtaposed against and secured to one another,

1. with the cells of said first layer nesting between each of two adjacently positioned cells of said second layer,

2. the central plane of said second layer being spaced from the central plane of said first layer, and

D. fluid pressure means connected to said manifolds of said first layer cells comprising 1 fluid pump means for a source of fluid pressure and 2. valve means for inflating and deflating said cells of said first layer.

6. The inflatable pad assembly defined in claim 5 wherein said first inflatable layer is provided with a plurality of smaller diameter elongated inflatable cells each branching from the main elongated inflatable cells adjacent one end of said pad.

7. A dual layer pad for supporting a human body thereon, comprising:

A. a first layer having a plurality of inflatable cells substantially covering at least a portion of a body supporting surface thereof; and

B. a second cushioning layer juxtaposed against said first layer at the surface opposite said supporting surface,

1. the central plane of said second layer being spaced from the central plane of said first layer, and

2. said second layer supporting and interfitting with said cells of said first layer to retain same against lateral movement upon imposition of a body on said first layer.

8. In an inflatable structure having a plurality of longitudinal inflatable cells arranged substantially parallel to one another A. means forming a manifold adjacent an edge of said structure and having a side thereof in fluid communication with each of said cells,

I. said manifold having said side positioned substantially across the ends of said cells and B. means forming relatively short continuations of said cells on the other side of and in fluid communication with said manifold.

9. The structure defined in claim 8 wherein said cells are formed by seal lines and said cell continuations are formed by an undulating seal line along the manifold edge of said structure.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US3008465 *Oct 10, 1958Nov 14, 1961Ida MolnerPulsating pneumatic body supporting device and pneumatic valve therefor
US3199124 *Mar 29, 1963Aug 10, 1965R D Grant CompanyAir mattress
GB1023097A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4193149 *Mar 27, 1978Mar 18, 1980Welch Robert J DBeds and mattresses
US4803744 *May 19, 1987Feb 14, 1989Hill-Rom Company, Inc.Inflatable bed
US4864671 *Mar 28, 1988Sep 12, 1989Decubitus, Inc.Controllably inflatable cushion
US4896389 *Jun 10, 1988Jan 30, 1990S.S.I. Medical Services Of Canada Inc.Inflatable air mattress
US4986260 *Nov 16, 1987Jan 22, 1991Superspine, Inc.Apparatus and method for providing continuous passive motion to the spine
US5103518 *Aug 1, 1989Apr 14, 1992Bio Clinic CorporationAlternating pressure pad
US5279010 *Apr 3, 1992Jan 18, 1994American Life Support Technology, Inc.Patient care system
US5323500 *Aug 26, 1992Jun 28, 1994American Life Support TechnologyCushions for a bed
US5564142 *May 11, 1995Oct 15, 1996Liu; Tsung-HsiAir mattress collaboratively cushioned with pulsative and static symbiotic sacs
US5606754 *Jul 17, 1995Mar 4, 1997Ssi Medical Services, Inc.Vibratory patient support system
US5630238 *Aug 4, 1995May 20, 1997Hill-Rom, Inc.Bed with a plurality of air therapy devices, having control modules and an electrical communication network
US5745937 *May 7, 1997May 5, 1998Hill-Rom, Inc.Support surfaces for a bed
US5781949 *May 7, 1997Jul 21, 1998Hill-Rom, Inc.Rotational therapy apparatus for a bed
US5787531 *Jul 23, 1996Aug 4, 1998Pepe; Michael FrancisInflatable pad or mattress
US5918336 *Jul 14, 1997Jul 6, 1999Apex Medical Corp.Structure of alternately inflated/deflated air bed
US5983429 *Sep 23, 1998Nov 16, 1999Stacy; Richard B.Method and apparatus for supporting and for supplying therapy to a patient
US6047424 *Sep 23, 1997Apr 11, 2000Hill-Rom, Inc.Bed having modular therapy devices
US6098222 *Feb 21, 1997Aug 8, 2000Hill-Rom Company, Inc.Vibratory patient support system
US6119291 *Dec 11, 1998Sep 19, 2000Hill-Rom, Inc.Percussion and vibration therapy apparatus
US6148461 *Aug 7, 1998Nov 21, 2000Huntleigh Technology, PlcInflatable support
US6197045 *Jan 4, 1999Mar 6, 2001Medivance IncorporatedCooling/heating pad and system
US6253401 *Jul 15, 1998Jul 3, 2001Dennis BoydAir mattress system
US6327727 *Sep 8, 1999Dec 11, 2001Viktor BocharnikovPheumatic cradle
US6375674 *Jan 3, 2000Apr 23, 2002Medivance, Inc.Cooling/heating pad and system
US6415814Aug 7, 2000Jul 9, 2002Hill-Rom Services, Inc.Vibratory patient support system
US6540659Nov 28, 2000Apr 1, 2003Abiomed, Inc.Cardiac assistance systems having bi-directional pumping elements
US6547716 *Nov 28, 2000Apr 15, 2003Abiomed, Inc.Passive cardiac restraint systems having multiple layers of inflatable elements
US6572534Sep 14, 2000Jun 3, 2003Abiomed, Inc.System and method for implanting a cardiac wrap
US6584628Mar 22, 2000Jul 1, 2003Hill-Rom Services, Inc.Hospital bed having a rotational therapy device
US6602182Nov 28, 2000Aug 5, 2003Abiomed, Inc.Cardiac assistance systems having multiple fluid plenums
US6616596Nov 28, 2000Sep 9, 2003Abiomed, Inc.Cardiac assistance systems having multiple layers of inflatable elements
US6626821May 22, 2001Sep 30, 2003Abiomed, Inc.Flow-balanced cardiac wrap
US6668408Aug 26, 2002Dec 30, 2003Hill-Rom Services, Inc.Patient care system
US6739009 *Nov 26, 2002May 25, 2004Del Drago MarcantonioSupporting device, notably mattress, mattress support or for a seat
US6789284Dec 7, 2001Sep 14, 2004Huntleigh Technology, PlcInflatable support
US6820640Jul 8, 2002Nov 23, 2004Hill-Rom Services, Inc.Vibratory patient support system
US6846296Sep 14, 2000Jan 25, 2005Abiomed, Inc.Apparatus and method for detachably securing a device to a natural heart
US6941598Dec 8, 2003Sep 13, 2005Hill-Rom Services, Inc.Patient care system
US7451506Jul 17, 2006Nov 18, 2008Hil-Rom Services, Inc.Bed having electrical communication network
US7761945May 31, 2005Jul 27, 2010Life Support Technologies, Inc.Apparatus and methods for preventing pressure ulcers in bedfast patients
US7784130 *Feb 14, 2006Aug 31, 2010Pegasus LimitedAlternating pressure mattresses
US7802332Nov 17, 2008Sep 28, 2010Hill-Rom Services, Inc.Inflatable mattress for a bed
US7814593Oct 5, 2007Oct 19, 2010Mady AttilaGradient bed
US7815668Nov 16, 2006Oct 19, 2010Life Support Technologies, Inc.Methods and apparatus for light therapy
US7849544Jun 12, 2008Dec 14, 2010Hill-Rom Industries SaSupport device of the mattress type comprising a heterogeneous inflatable structure
US7975335May 8, 2007Jul 12, 2011Hill-Rom Services, Inc.Pulmonary mattress
US8056165Aug 18, 2010Nov 15, 2011Hill-Rom Services, Inc.Inflatable mattress for a bed
US8104126Oct 13, 2008Jan 31, 2012Hill-Rom Industries SaMethod of inflating, in alternating manner, a support device having inflatable cells, and a device for implementing the method
US8177828Jul 27, 2009May 15, 2012Arizant Healthcare Inc.Underbody convective warming blanket constructions
US8251057Jun 30, 2004Aug 28, 2012Life Support Technologies, Inc.Hyperbaric chamber control and/or monitoring system and methods for using the same
US8286282Nov 11, 2011Oct 16, 2012Hill-Rom Services, Inc.Bed frame and mattress synchronous control
US8429774Aug 13, 2010Apr 30, 2013Hill-Rom Industries SaLateral tilt device
US8460354Oct 15, 2010Jun 11, 2013Arizant Healthcare Inc.Inflatable convective pad for surgery
US8470012 *Sep 8, 2004Jun 25, 2013Arizant Healthcare Inc.Inflatable convective pad for surgery
US8474074Jul 8, 2011Jul 2, 2013Hill-Rom Services, Inc.Pulmonary mattress
US8555441Apr 14, 2010Oct 15, 2013Star Cushion Products, Inc.Therapeutic mattress system and methods of fabricating same
US8601622Apr 5, 2013Dec 10, 2013Hill-Rom Industries S.A.Patient support apparatus including a lateral tilt device
CN100574675CFeb 14, 2006Dec 30, 2009珀伽索斯有限公司Alternating pressure mattresses
DE2813309A1 *Mar 28, 1978Oct 5, 1978Welch Hazel GertrudeMatratze
DE202013010395U1Nov 20, 2013Dec 9, 2013Novacare GmbhErweiterungspolster für eine Wechseldruckmatratze
EP0292218A1 *May 16, 1988Nov 23, 1988HILL-ROM COMPANY, INC. (an Indiana corporation)Inflatable bed
EP0364249A2 *Oct 11, 1989Apr 18, 1990Du Pont Canada Inc.Support system
EP1487386A1 *Nov 20, 2002Dec 22, 2004Medivance IncorporatedImproved medical thermal energy exchange pad
WO1986005973A1 *Apr 8, 1986Oct 23, 1986Looper Pauline DeBed or seat element
WO2000003625A2 *Jan 13, 1999Jan 27, 2000Zdravko MaricevicUniversal mattress for sitting, laying, decubitus prevention and curing
WO2005007054A1 *Jul 16, 2004Jan 27, 2005Kanmed AbSystem and method for medical equipment
U.S. Classification601/148, 5/713, 601/149
International ClassificationA61H23/04, A61G7/057
Cooperative ClassificationA61H2201/0134, B60N2/448, A61H9/0078, A61G7/05776, A61H2201/0146, B60N2/4415
European ClassificationA61H9/00P6, A61G7/057K1