|Publication number||US3644950 A|
|Publication date||Feb 29, 1972|
|Filing date||Aug 1, 1969|
|Priority date||Aug 1, 1969|
|Also published as||CA922820A, CA922820A1, DE2038238A1|
|Publication number||US 3644950 A, US 3644950A, US-A-3644950, US3644950 A, US3644950A|
|Inventors||Edward R Lindsay Jr|
|Original Assignee||Milton Roy Co|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (10), Referenced by (129), Classifications (11)|
|External Links: USPTO, USPTO Assignment, Espacenet|
United States Patent Lindsay, Jr. Feb. 29, 1972  PATIENT SUPPORT SYSTEM 3,393,937 7/1968 Wehmer ..5/348 2,997,100 8/1961 Morris ....5/348  Inventor. Edward R. Lindsay, Jr., Clearwater, Fla, 3,017,642 1/l962 Rosenberg at a. 5,349  Assignee: Milton Roy Company, St. Petersburg, Fla. 3,051,601 8/1962 Shick ..5/361  Wed: 1969 Primary ExaminerBobby R. Gay  Appl. No.: 846,719 Assistant ExaminerDarre1l Marquette Attorney-Woodcock, Washbum, Kurtz 81. Mackiewicz  US. Cl ..5/347, 5/348, 5/350,
297D1G 3  ABSTRACT  Int. Cl ..A47c 27/08 In a bed f supporting and "eating a hospital patient a  Field of Search ..5/347, 348, 91, 355, 361, 353 lamination f low and medium density plastic f is endosed in a pressurized container. An open pore foam layer on top of  References cued the container produces a flow of air from the top of the foam UNITED STATES PATENTS layer for patient ventilation. Control of: the volume oi air varues the degree of ventilation. The container 18 divided into airl,228,783 6/1917 Kerivan 5/343 tight zones which can be independently pressurized to control 3,032,438 3/1963 Nachmanm. 5/ 353 the relative firmness of the support in different zones. The 3,1 18,153 1/1964 Hood 5/ 345 pressurizing air for the container is controlled to vary the rela- 3, i i i Whitney five firmness of upport 3,266,064 8/1966 Figman ....5/347 3,330,598 7/1967 Whiteside ..297/284 5 Claims, 4 Drawing Figures PATIENT SUPPORT SYSTEM BACKGROUND OF THE INVENTION This invention relates to a hospital bed and more particularly to a plastic foam bed having a flow of ventilating air from the top thereof.
The comfort of a hospital patient is greatly enhanced by a bed which provides uniform support for the patients body. Uniform support also helps prevent decubitus ulcers. Decubitus ulcers result from a loss of blood circulation caused by pressure on the skin, particularly pressure over a bony protuberance. If the pressure on areas of support exceeds the mean capillary blood pressure, these areas are vulnerable to decubitus ulcers. Other factors which contribute to decubitus ulcers are lack of proper ventilation, skin sheer, moisture and diet, but pressure is the most important and primary cause. These and other considerations are discussed in Etiology of Decubitus Ulcers: An Experimental Study, Archives of Physical Medicine and Rehabilitation, Nov., 1961.
Attempts to equalize pressure on the patients body have included the provision of liquid-filled mattresses, such as that shown in U.S. Pat. No. 3,108,293. Liquid-filled mattresses must have a cover to keep the patient out of contact with the liquid. This cover acts as a hammock and itself distributes pressure unevenly over the patients body. Both conventional and liquid-filled mattresses prevent air from circulating freely over areas of the patients body resting on the mattress.
A great advance in patient supporting beds was a fluidized granular bed shown in Hargest et al. U.S. Pat. No. 3,428,973. This bed includes a mass of granular material which is fluidized by air blowing upwardly through the mass. A patient resting on a pliable sheet on top of the mass of granular material is supported uniformly over all parts of his body. The use of beds of this type has been particularly successful in the treatment of burn victims, the prevention of decubitus ulcers and, in general, obviating the adverse effects of confinement to a hospital bed on patient recovery. The beneficial use of such beds is described in Patients Float in Bed of Beads, Hospital Practice, May, 1969, Vol. 4, No.5, page 91, and in Bead Bed Floats Away Sores, Medical World News, May 16, 1969.
Unfortunately, it is not practical to provide fluidized granular type beds for all hospital patients because of expense and weight considerations.
Soft plastic foam has some characteristics of uniform support which make it attractive for possible use in a hospital bed. The use of plastic foam instead of fluidized granules would also be attractive from the cost standpoint. Employing lowdensity foam to support a patient providesa low-pressure uniform support by allowing the patient to sink down into the foam. Since the foam is a good insulator, heat and perspiration on the supporting areas becomes a problem. Attempts have been made to ventilate a foam mattress. For example, in the F igman U.S. Pat. No. 3,266,064, regularly spaced openings in the foam convey ventilating air to the patient.
SUMMARY OF THE INVENTION In accordance with an important aspect of the present invention, the patient support includes a pressurized plastic foam filled container covered by an open pore foam sheet which serves as a plenum for the distribution of ventilating air to the supporting areas of the patients skin.
In accordance with another aspect of the invention, the pressurized container encloses a lamination of layers of plastic foam of differing density.
In accordance with another aspect of the present invention, the pressurization of the container is controlled to vary the relative firmness of the support.
In this system, the softest support is that provided by the layers of low-density foam with no air pressure. As air pressure is increased, less and less of the patients weight is supported by the foam. When maximum pressure is obtained, nearly all of the patients weight is carried by the pressurized container.
In accordance with still another aspect of the invention, the pressurized container is divided into airtight zones which are independently pressurized to control the relative firmness provided different parts of a patient.
DESCRIPTION OF THE DRAWINGS FIG. 1 shows a cross section of the polyfoam and pneumatic support system of the invention;
FIG. 2 is a cross section of the pressurized container enclosing the lamination of soft and medium density foam layers;
FIG. 3 shows details of the pressurized container; and
FIG. 4 shows the support system in place in a conventional hospital bed.
DESCRIPTION OF A PARTICULAR EMBODIMENT Referring to FIG. 1, the pressurized container 1 encloses a lamination of low and medium density plastic foams. The container is covered with an open pore foam layer 2 which acts as a plenum for a supply of ventilating air. This air is supplied from an air compressor 3 through the connecting hose 4. The use of an open pore foam as an air plenum has significant advantages in a support system of this type. For example, the distribution of air from the open pore foam is more uniform than the distribution from a box perforated on its top surface and placed beneath a foam mattress, as described in Science and Medicine, AprilMay, 1969, page 19. It is also more uniform than the flow of air through foam with openings extending all the way through the foam such as is shown in the aforementioned Figman U.S. Pat. No. 3,266,064.
Typically, the foam layer 2 may be a 2-inch thick open pore foam which is rigid enough that patient loading does not pinch off air flow through the pores, but soft enough to conform to the shape of the patients body. One particular foam suitable for use in an open pore (reticulated) polyurethane foam available from Scott Industrial Foam Division of the Scott Paper Company, Chester, Pennsylvania, having 60-30 p.p.i. (pores per inch). A uniform air flow of between 0.5 to 1.5 feet per minute can be obtained from the top surface of the foam layer 2.
In some applications, it will be desirable to include a top foam sheet 5 above the open pore foam 2. The top foam sheet 5 should be a low-density, semiclosed cell (not reticulated) foam. One foam suitable for use is the polyether urethane flexible foam available from Napco Chemical Company, Plainfield, New Jersey, having a nominal density of 1.10-1.35 pounds per cubic foot.
The pressurized container 1, open pore foam layer 2, and top foam sheet 5 are all enclosed in a fabric cover 6. The top of this cover particularly must be made of a material which will stretch, but which does not support the patient by a hammocking effect. The typical material suitable for use is a nylon stretch-type material sold under the trade name of Banlon.
The ventilating air supplied to the hose 4, and the pressurizing air supplied through the hose 4a, are supplied from the air compressor 3. The air compressor unit includes a flow control knob 7 and an airflow indicator 8. The ventilating air may be heated and humidified as required. The air compressor also includes a pressure control 9 and an air pressure indicator 10. The unit should be capable of pressurizing the container 1 up to a pressure of 2 p.s.i. The ability to change the firmness of support supplied by the pressurized container is quite desirable. It allows selecting the firmness particularly suited to the needs and desires of the individual patient. It is also desirable for an individual patient to vary the relative firmness of support from time to time to relieve monotony. One compressor suitable for use is the vane-type air compressor.
Referring to FIG. 2, the pressurized container 1 encloses a lamination of foams, the layers 11-14 being shown. The laminations are of increasing density. That is, in most applications it will be desired to have more dense foam at the bottom. Typically, the layer 11 may be a low-density semiclosed cell polyether urethane foam having an indentation load deflection (lLD) of 25 percent at 9 pounds. Layer 12 typically may have an lLD of 25 percent at 12 pounds; layer 13 an ILD of 25 percent at to pounds and layer 14 an ILD of percent at to pounds.
The foam layers are enclosed in the fabric container I having an excess of fabric at the top to allow deflection uninfiuenced by a hammocking effect. An air fitting 15 supplies the pressurizing air to the container. The container is divided into 4-inch square cells by tensile cords which are fastened to the top of fabric container 1 and to a board 16 in the bottom of the container. Of course, the cells may be larger or smaller than 4 square inches.
The attachment of the tensile cords between the board 16 and the top fabric is shown in FIG. 3. Note that the foam is compressed at the tie down at the corner of each convex pocket. Typical cords 17-20 divide the foam into 4-inch square cells. There is a dome of top fabric between each group of four cords. This allows depression of a particular cell without affecting other cells. The rows of cells along the edges may be pressurized separately from the other cells to allow a firm support along the edges of the bed. This provides firm support so that the edges of the container do not bulge out. This also provides a firm support at the edge when a person is getting into or out of the bed. As shown in FIG. 3, a separate piece of fabric 21 is used along the edge and is folded under to be attached to the baseboard along the line 22. This piece of fabric separates the enclosed cells from the remainder of the cells. This technique is also used to divide the rest of the sealed container into zones which can be separately pressurized.
As shown in FIG. 4, the container is divided into three separate control zones. Ducts 23, 24, and 25 supply separate sources of pressurizing air to the three zones. Zone control of firmness is desirable, for example, to allow the patient to sit on a relatively firm support while his back remains on a soft support. Also, zone control of firmness facilitates handling of a patient in a supine position on a bedpan. The capability of softening a zone under the buttocks while maintaining the remainder of the support firm allows sliding the bedpan under the patient instead of lifting the patient.
FIG. 4 shows the support system in place on a conventional hospital bed. The board 16 (not shown in FIG. 4) is hinged at appropriate places to allow bending along lines at the points 26, 27 and 28 so that the normal raising and lowering functions of a hospital bed can be accommodated. Auxiliary orthopedic support members, such as the contoured heel pad 29, can be inserted in the foam at the appropriate places.
The advantages of the patient support system of the present invention over a conventional hospital bed can be appreciated by the results of a simple pressure test. This test was conducted by inserting a pressure measuring sensor into different places on a conventional mattress and on a polyfoam support system of the present invention. The sensor included an air cell with opposed electrical contacts which closed when the pressure in the air cell was reduced to a measured level. This test is summarized by the following comparison of supporting pressures for a conventional mattress and a polyfoam support.
Conventional mattress Position Polyfoam 165 mm. Hg. 39 5.8
65 mm. Hg. 14 7.5
Sitting on Edge of Bed buttocks midthigh The above comparison demonstrates the advantages of the polyfoam support in more nearly equalizing the distribution of pressure on the supporting areas of the patient. Note, for example, that midcapillary pressure on an average probably runs between 20 and 30 mm. of Hg. Note, also, for example, that the pressure measurements at 4 inches above waist are greater for the polyfoam support than for a conventional mattress. This indicates that the polyfoam support extends up into the small of the back to provide support in that area and to lessen the pressure on the other areas.
While a particular embodiment of the invention has been shown and described, it will be understood that various modifications may be made without departing from the true spirit and scope of the invention. The appended claims are, therefore, intended to cover any such modifications.
What is claimed is:
1. A system for uniformly supporting a patient comprising:
a lamination of layers of lowand medium-density plastic foam,
an airtight container enclosing said lamination,
means for pressurizing said container so that said layers of foam are pressurized to the desired degree of firmness, tensile cords between the top and bottom of said container dividing said lamination of foam into pressurized cells,
an open pore reticulated uniform foam layer on top of said pressurized container,
an outer covering enclosing said pressurized container and said reticulated foam layer, and
a source of ventilating air connected to said open pore reticulated foam layer producing a flow of air from the top of said foam layer for patient ventilation.
2. The system of claim 1, and an air compressor supplying pressurized air to said container and supplying ventilating air to said open pore foam layer.
3. The system recited in claim I wherein said lamination has layers of foam of increasing density from the top to the bottom of said container.
4. The combination recited in claim 2 wherein said air compressor has controls for varying the pressurization of said container so that different degrees of relative firmness of said mattress can be obtained.
5. A system for uniformly supporting a patient comprising:
a lamination of layers of lowand medium-density plastic foam, an airtight container enclosing said lamination, means for pressurizing said container so that said layers of foam are pressurized to the desired degree of firmness,
said pressurized container having separately pressurized cells around the periphery thereof, the cells around the periphery being supplied with air at a higher pressure than the remaining portion of said container to provide firmer support at the edges of said container,
an open pore uniform foam layer on top of said pressurized container, and
a source of ventilating air connected to said open pore foam layer producing a flow of air from the top of said foam layer for patient ventilation.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US1228783 *||Dec 18, 1915||Jun 5, 1917||George Edward Kerivan||Mattress.|
|US2997100 *||Jun 9, 1958||Aug 22, 1961||Toyad Corp||Pneumatic foam structures|
|US3017642 *||Nov 27, 1959||Jan 23, 1962||Holiday Line Inc||Self-inflating cushion|
|US3051601 *||Nov 7, 1958||Aug 28, 1962||Gen Tire & Rubber Co||Laminated polyurethane foam cushion|
|US3082438 *||Feb 10, 1961||Mar 26, 1963||Nachman Corp||Bed spring assembly|
|US3118153 *||Oct 21, 1960||Jan 21, 1964||Davidson Rubber Company Inc||Upholstery corner construction|
|US3148391 *||Nov 24, 1961||Sep 15, 1964||John K Whitney||Support device|
|US3266064 *||Mar 29, 1963||Aug 16, 1966||Figman Murray||Ventilated mattress-box spring combination|
|US3330598 *||Feb 14, 1966||Jul 11, 1967||Whiteside George Harold||Pneumatic seat|
|US3393937 *||Dec 27, 1966||Jul 23, 1968||Wehmer Felix||Supports for the human body|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US3778851 *||Feb 24, 1972||Dec 18, 1973||Haworth Air Conditioning Ltd||Mattress|
|US3840920 *||Jan 24, 1972||Oct 15, 1974||W Voelker||Adjustable mattress for pregnant mothers|
|US3866606 *||Sep 4, 1973||Feb 18, 1975||Hargest Thomas S||Cyclically produced contoured support|
|US3879776 *||Jan 10, 1974||Apr 29, 1975||Morris Solen||Variable tension fluid mattress|
|US4599755 *||Nov 30, 1984||Jul 15, 1986||Fuji Electric Co., Ltd.||Bead fluidizing type body supporting device|
|US4694521 *||Jun 19, 1986||Sep 22, 1987||Fuji Electric Co., Ltd||Human body supporting device|
|US4745645 *||Aug 27, 1987||May 24, 1988||Mcwilliams Douglas J||Inflatable insert for worn mattresses|
|US4803744 *||May 19, 1987||Feb 14, 1989||Hill-Rom Company, Inc.||Inflatable bed|
|US4825488 *||Apr 13, 1988||May 2, 1989||Bedford Peter H||Support pad for nonambulatory persons|
|US4835802 *||Feb 22, 1988||Jun 6, 1989||The Kmw Group, Inc.||Fluidization patient support control system|
|US4840425 *||Apr 21, 1987||Jun 20, 1989||Tush Cush, Inc.||Varying support cushioned seating assembly and method|
|US4896389 *||Jun 10, 1988||Jan 30, 1990||S.S.I. Medical Services Of Canada Inc.||Inflatable air mattress|
|US4944060 *||Mar 3, 1989||Jul 31, 1990||Peery John R||Mattress assembly for the prevention and treatment of decubitus ulcers|
|US4946220 *||Aug 9, 1988||Aug 7, 1990||David Wyon||Ventilated chair or similar device|
|US5002336 *||Oct 18, 1989||Mar 26, 1991||Steve Feher||Selectively cooled or heated seat and backrest construction|
|US5163737 *||Jan 29, 1991||Nov 17, 1992||The Bbj Connection||Cushion|
|US5251347 *||Jan 3, 1992||Oct 12, 1993||Stryker Corporation||Bed having patient warming apparatus|
|US5305483 *||Mar 8, 1993||Apr 26, 1994||Watkins Charles E||Infant body support and providing air flow for breathing|
|US5325551 *||Jun 16, 1992||Jul 5, 1994||Stryker Corporation||Mattress for retarding development of decubitus ulcers|
|US5373595 *||Mar 12, 1993||Dec 20, 1994||Irvin Industries Canada Ltd.||Air support device|
|US5542136 *||Aug 5, 1994||Aug 6, 1996||Stryker Corporation||Portable mattress for treating decubitus ulcers|
|US5594963 *||Mar 11, 1996||Jan 21, 1997||Kinetic Concepts, Inc.||Pressure relief air mattress and related system|
|US5606754 *||Jul 17, 1995||Mar 4, 1997||Ssi Medical Services, Inc.||Vibratory patient support system|
|US5640728 *||Nov 20, 1995||Jun 24, 1997||Graebe; Robert H.||Ventilated access interface and cushion support system|
|US5675852 *||Mar 8, 1994||Oct 14, 1997||Watkins; Charles Eugene||Infant body support pad|
|US5701623 *||Jun 17, 1996||Dec 30, 1997||Latex Foam Products, Inc.||Composite mattress and mattress topper having a latex foam core|
|US5787534 *||Jun 7, 1995||Aug 4, 1998||Hargest; Thomas S.||Sudden infant death syndrome prevention apparatus and method and patient surface|
|US5794289 *||Nov 12, 1996||Aug 18, 1998||Gaymar Industries, Inc.||Mattress for relieving pressure ulcers|
|US5893184 *||May 1, 1998||Apr 13, 1999||Comfortex Health Care Surfaces||Pressure reducing backrest cushion with selective pressure point relief|
|US5983429 *||Sep 23, 1998||Nov 16, 1999||Stacy; Richard B.||Method and apparatus for supporting and for supplying therapy to a patient|
|US6036271 *||Nov 14, 1995||Mar 14, 2000||Span-America Medical Systems, Inc.||Self-adjusting pressure relief seating system and methodology|
|US6052853 *||Jan 14, 1997||Apr 25, 2000||Halo Sleep Systems, Inc.||Mattress and method for preventing accumulation of carbon dioxide in bedding|
|US6098222 *||Feb 21, 1997||Aug 8, 2000||Hill-Rom Company, Inc.||Vibratory patient support system|
|US6209159||Jan 10, 1997||Apr 3, 2001||Comfortex Health Care Surfaces||Pressure reducing cushion with selective pressure point relief|
|US6370718||Feb 14, 2000||Apr 16, 2002||Halo Innovations, Inc.||Mattress and method for preventing accumulation of carbon dioxide in bedding|
|US6415814||Aug 7, 2000||Jul 9, 2002||Hill-Rom Services, Inc.||Vibratory patient support system|
|US6684433 *||Jun 5, 2002||Feb 3, 2004||Gualtiero G. Giori||Pressure adjustable foam support apparatus|
|US6721980||Oct 28, 1999||Apr 20, 2004||Hill-Fom Services, Inc.||Force optimization surface apparatus and method|
|US6782574 *||Jul 18, 2001||Aug 31, 2004||Span-America Medical Systems, Inc.||Air-powered low interface pressure support surface|
|US6820640||Jul 8, 2002||Nov 23, 2004||Hill-Rom Services, Inc.||Vibratory patient support system|
|US7036163||Feb 6, 2003||May 2, 2006||Halo Innovations, Inc.||Furniture cover sheet|
|US7152264||Dec 26, 2001||Dec 26, 2006||Dennis Boyd||Air mattress with pillow top|
|US7191480||Mar 5, 2004||Mar 20, 2007||Hill-Rom Services, Inc.||Mattress or cushion structure|
|US7287290 *||Sep 22, 2005||Oct 30, 2007||Hill-Rom Services, Inc.||Mattress having an air pressure indicator|
|US7296315 *||Aug 30, 2004||Nov 20, 2007||Span-America Medical Systems, Inc.||Air-powered low interface pressure support surface|
|US7330127||Apr 20, 2004||Feb 12, 2008||Hill-Rom Services, Inc.||Force optimization surface apparatus and method|
|US7367073||Nov 27, 2006||May 6, 2008||Dennis Boyd||Air mattress with pillow top|
|US7480953 *||Mar 20, 2007||Jan 27, 2009||Hill-Rom Services, Inc.||Patient support|
|US7515059||Nov 19, 2007||Apr 7, 2009||Hill-Rom Services, Inc.||Patient support surface with physiological sensors|
|US7610642||Aug 15, 2007||Nov 3, 2009||Dennis Boyd||Air mattress with pillow top|
|US7617555||Jan 26, 2009||Nov 17, 2009||Hill-Rom Services, Inc.||Patient support surface|
|US7694372||Apr 7, 2009||Apr 13, 2010||Dennis Boyd||Air mattress|
|US7966680||Nov 16, 2009||Jun 28, 2011||Hill-Rom Services, Inc.||Patient support surface|
|US7975335||May 8, 2007||Jul 12, 2011||Hill-Rom Services, Inc.||Pulmonary mattress|
|US8031080||Apr 3, 2009||Oct 4, 2011||Hill-Rom Services, Inc.||Patient support surface with vital signs sensors|
|US8281433||Oct 20, 2009||Oct 9, 2012||Hill-Rom Services, Inc.||Apparatuses for supporting and monitoring a person|
|US8397327||Aug 26, 2011||Mar 19, 2013||Span-America Medical Systems, Inc.||Bed insert|
|US8429774||Aug 13, 2010||Apr 30, 2013||Hill-Rom Industries Sa||Lateral tilt device|
|US8474074||Jul 8, 2011||Jul 2, 2013||Hill-Rom Services, Inc.||Pulmonary mattress|
|US8525679||Sep 14, 2010||Sep 3, 2013||Hill-Rom Services, Inc.||Sensor control for apparatuses for supporting and monitoring a person|
|US8525680||Sep 14, 2010||Sep 3, 2013||Hill-Rom Services, Inc.||Apparatuses for supporting and monitoring a condition of a person|
|US8555440||Apr 30, 2008||Oct 15, 2013||Randall J. Lewis||Patient lifter with intra operative controlled temperature air delivery system|
|US8601620||May 13, 2011||Dec 10, 2013||Hill-Rom Services, Inc.||Cover system for a patient support surface|
|US8601622||Apr 5, 2013||Dec 10, 2013||Hill-Rom Industries S.A.||Patient support apparatus including a lateral tilt device|
|US8739339 *||Apr 20, 2011||Jun 3, 2014||King Koil Licensing Company, Inc.||Multi-layer mattress with an air filtration foundation|
|US8752220||Jul 6, 2010||Jun 17, 2014||Hill-Rom Services, Inc.||Systems for patient support, monitoring and treatment|
|US8789224||Nov 6, 2001||Jul 29, 2014||Tempur-Pedic Managemant, LLC||Therapeutic mattress assembly|
|US8844073||Jun 6, 2011||Sep 30, 2014||Hill-Rom Services, Inc.||Apparatus for supporting and monitoring a person|
|US8997279 *||Mar 12, 2012||Apr 7, 2015||King Koil Licensing Company, Inc.||Multi-layer mattress with an air filtration foundation|
|US9013315||Aug 30, 2013||Apr 21, 2015||Hill-Rom Services, Inc.||Sensor control for apparatuses for supporting and monitoring a person|
|US9044204||Aug 28, 2013||Jun 2, 2015||Hill-Rom Services, Inc.||Apparatuses for supporting and monitoring a condition of a person|
|US9119479||Dec 21, 2009||Sep 1, 2015||Tempur-Pedic Management, Llc||Adjustable-firmness body support and method|
|US9138064||Oct 1, 2013||Sep 22, 2015||Fxi, Inc.||Mattress with combination of pressure redistribution and internal air flow guides|
|US9165449||May 22, 2013||Oct 20, 2015||Hill-Rom Services, Inc.||Occupant egress prediction systems, methods and devices|
|US9271579||Apr 4, 2014||Mar 1, 2016||Rapid Air Llc||Adjustable mattress with foam inserts and air chambers|
|US9308393||Jan 15, 2015||Apr 12, 2016||Dri-Em, Inc.||Bed drying device, UV lights for bedsores|
|US9329076||Mar 14, 2013||May 3, 2016||Hill-Rom Services, Inc.||Patient support systems and methods of use|
|US9333136||Feb 26, 2014||May 10, 2016||Hill-Rom Services, Inc.||Sensors in a mattress cover|
|US9392875||Jan 18, 2013||Jul 19, 2016||Fxi, Inc.||Body support system with combination of pressure redistribution and internal air flow guide(s) for withdrawing heat and moisture away from body reclining on support surface of body support system|
|US9433300||Feb 26, 2014||Sep 6, 2016||Hill-Rom Services, Inc.||Topper for a patient surface|
|US9462893||Dec 6, 2013||Oct 11, 2016||Hill-Rom Services, Inc.||Cover system for a patient support surface|
|US9504620||Jul 23, 2014||Nov 29, 2016||American Sterilizer Company||Method of controlling a pressurized mattress system for a support structure|
|US9549675||Apr 14, 2015||Jan 24, 2017||Hill-Rom Services, Inc.||Sensor control for apparatuses for supporting and monitoring a person|
|US9549705||Apr 17, 2015||Jan 24, 2017||Hill-Rom Services, Inc.||Apparatuses for supporting and monitoring a condition of a person|
|US9552460||Jul 8, 2014||Jan 24, 2017||Hill-Rom Services, Inc.||Apparatus for supporting and monitoring a person|
|US9552714||Sep 17, 2015||Jan 24, 2017||Hill-Rom Services, Inc.||Occupant egress prediction systems, methods and devices|
|US9655457||Jun 20, 2013||May 23, 2017||Hill-Rom Services, Inc.||Patient support systems and methods of use|
|US9693921||Jan 29, 2014||Jul 4, 2017||Diacor, Inc.||Systems for patient transfer, devices for movement of a patient, and methods for transferring a patient|
|US20040031103 *||Nov 6, 2001||Feb 19, 2004||Wyatt Charles C||Therapeutic mattress assembly|
|US20040168255 *||Mar 5, 2004||Sep 2, 2004||Hill-Rom Services, Inc.||Mattress or cushion structure|
|US20040177450 *||Mar 23, 2004||Sep 16, 2004||Hill-Rom Services, Inc.||Patient support apparatus and method|
|US20040194220 *||Apr 20, 2004||Oct 7, 2004||Hill-Rom Services, Inc.||Force optimization surface apparatus and method|
|US20050005363 *||Oct 7, 2002||Jan 13, 2005||Gualtiero Giori||Pressure adjustable foam support apparatus|
|US20050022308 *||Aug 30, 2004||Feb 3, 2005||Totton Wanda J.||Air-powered low interface pressure support surface|
|US20050034764 *||Sep 23, 2004||Feb 17, 2005||Hanh Barry D.||Patient support system|
|US20060059630 *||Sep 22, 2005||Mar 23, 2006||Romano James J||Mattress having an air pressure indicator|
|US20060075569 *||Aug 2, 2005||Apr 13, 2006||Gino Giori||Adjustable foam mattress|
|US20060191538 *||Apr 25, 2006||Aug 31, 2006||Map Medizin-Technologie Gmbh||Application device for breathing mask arrangement|
|US20070113350 *||Nov 27, 2006||May 24, 2007||Dennis Boyd||Air Mattress with Pillow Top|
|US20070163052 *||Mar 20, 2007||Jul 19, 2007||Romano James J||Patient support|
|US20070234481 *||May 31, 2007||Oct 11, 2007||Totton Wanda J||Air-powered low interface pressure support surface|
|US20070266499 *||May 8, 2007||Nov 22, 2007||Hill-Rom Services, Inc.||Pulmonary mattress|
|US20080022461 *||Jul 19, 2007||Jan 31, 2008||Kci Licensing, Inc., Legal Department, Intellectual Property||Patient support with welded materials|
|US20080060138 *||Nov 19, 2007||Mar 13, 2008||Price James H||Patient support surface with physiological sensors|
|US20080078032 *||Aug 15, 2007||Apr 3, 2008||Dennis Boyd||Air mattress with pillow top|
|US20090183312 *||Apr 3, 2009||Jul 23, 2009||Price James H||Patient support surface with vital signs sensors|
|US20090271923 *||Apr 30, 2008||Nov 5, 2009||Lewis Randall J||Patient lifter with intra operative controlled temperature air delivery system|
|US20100088825 *||Aug 28, 2009||Apr 15, 2010||Howell Charles A||Fluidizable Bed with Supportive Filter Sheet|
|US20100095461 *||Nov 16, 2009||Apr 22, 2010||Romano James J||Patient support surface|
|US20100101022 *||Oct 20, 2009||Apr 29, 2010||Carl William Riley||Apparatuses for supporting and monitoring a person|
|US20110047703 *||Aug 13, 2010||Mar 3, 2011||Jean-Francois Tarsaud||Lateral tilt device|
|US20110068928 *||Sep 14, 2010||Mar 24, 2011||Riley Carl W||Sensor control for apparatuses for supporting and monitoring a person|
|US20110068935 *||Sep 14, 2010||Mar 24, 2011||Riley Carl W||Apparatuses for supporting and monitoring a condition of a person|
|US20110173758 *||Jun 22, 2009||Jul 21, 2011||Ricky Jay Fontaine||Inflatable mattress and method of operating same|
|US20130212806 *||Feb 21, 2013||Aug 22, 2013||Qfix Systems, Llc||Novel Air Bearing Device And Method For Transferring Patients|
|US20140237719 *||Dec 23, 2013||Aug 28, 2014||Gentherm Incorporated||Climate-controlled topper member for beds|
|US20150143629 *||Feb 3, 2015||May 28, 2015||Hill-Rom Services, Inc.||Footboard having integrated foot cushion|
|US20160150891 *||Jul 29, 2015||Jun 2, 2016||Gentherm Incorporated||Climate controlled bed assembly with intermediate layer|
|CN101478942B||Jul 24, 2007||Apr 4, 2012||凯希特许有限公司||Patient support with welded materials|
|DE3545311A1 *||Dec 20, 1985||Jul 2, 1987||Rokado Metall Holz Kunststoff||Wasserbett|
|EP0072240A1 *||Aug 9, 1982||Feb 16, 1983||Support Systems International, Inc.||Improved fluidized supporting apparatus|
|EP2140847A3 *||Nov 6, 2001||Nov 17, 2010||Tempur World, LLC||Therapeutic mattress assembly|
|WO1992002200A1 *||Jul 27, 1990||Feb 20, 1992||Therapeutic Environments, Inc.||Mattress assembly for the prevention and treatment of decubitus ulcers|
|WO1996039904A1 *||Nov 1, 1995||Dec 19, 1996||Hargest Thomas S||Sudden infant death syndrome prevention apparatus|
|WO1998023236A1||Nov 24, 1997||Jun 4, 1998||Kinetic Concepts, Inc.||Temperature control for use with patient supports|
|WO2007009275A1 *||Jun 12, 2006||Jan 25, 2007||Prospective Concepts Ag||Pneumatic cushion structure|
|WO2008014277A3 *||Jul 24, 2007||May 8, 2008||Alan L Bartlett||Patient support with welded materials|
|WO2013139857A1 *||Mar 20, 2013||Sep 26, 2013||Enmed Ip Ltd.||A cushion assembly|
|WO2014113164A1 *||Dec 16, 2013||Jul 24, 2014||Fxi, Inc.||Body support system with pressure redistribution and internal air flow guide(s)|
|U.S. Classification||5/709, 601/158, 601/148, 5/714, 297/DIG.300, 5/710|
|Cooperative Classification||A61G2203/34, Y10S297/03, A61G7/057|