US3426373A - Inflatable mattresses - Google Patents

Inflatable mattresses Download PDF

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Publication number
US3426373A
US3426373A US3426373DA US3426373A US 3426373 A US3426373 A US 3426373A US 3426373D A US3426373D A US 3426373DA US 3426373 A US3426373 A US 3426373A
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Prior art keywords
mattress
side
chambers
chamber
end
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James H S Scott
Wilfred Salisbury
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James H S Scott
Wilfred Salisbury
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61GTRANSPORT OR ACCOMODATION FOR PATIENTS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/001Beds specially adapted for nursing; Devices for lifting patients or disabled persons with means for turning-over the patient

Description

1969 J. H. s. SCOTT T AL 3,426,373

INFLATABLE MATTRESSES Filed Oct. 1'7, 1966 United States Patent 3,426,373 INFLATABLE MATTRESSES James H. S. Scott, 35 Mansionhouse Road, and Wilfred Salisbury, 17 Marchmont Crescent, Edinburgh 9, Scotland Filed Oct. 17, 1966, Ser. No. 590,165 Claims priority, application Great Britain, Oct. 18, 1965,

44,104/ 65 US. Cl. -348 4 Claims Int. Cl. A47c 27/08 ABSTRACT OF THE DISCLOSURE The present invention relates to an inflatable undermattress for medical and surgical use. The object of the invention is to provide an under-mattress which can be used to vary the position of a bed-ridden patient, so changing the pressure points on the patient, without the patient being handled by nursing staff.

According to the invention an inflatable undermattress comprises a base member having at each side thereof an inflatable chamber, each chamber being so shaped that when inflated the upper surface thereof is inclined downwardly towards the centre of the mattress.

It will be appreciated that by inflating one or other of the chambers a patient supported by the mattress can be moved or tilted to one side or the other. Apart from changing the pressure points on the patient regular movement of this sort assists to maintain circulation and also adds greatly to the general comfort of the patient. The presence of the under-mattress beneath an ordinary mattress causes no discomfort to the patient.

Preferably each inflation chamber is formed between the base member and a sheet of material positioned above the base member and joined thereto along free edges. Alternatively each chamber may be formed by a separate bladder enclosed in a pocket of which the base member forms part.

The chambers can be of any required shape and size. Preferably they extend the full length of the mattress and have one side defined by a side of the mattress and the other side curved to increase the width of the chamber from the foot end to the head end of the under-mattress, the curved edges of the two chambers converging towards, and preferably meeting at, the head end of the mattress.

This shaping creates a central hollow along the undermattress, wide at the foot end thereof, and narrowing toward the head end thereof. This helps prevent the patient being rolled out of bed on inflation of the chambers.

An under-mattress according to the invention will now be described in more detail, by way of example, with reference to the accompanying drawings in which:

FIGURE 1 is a plan view of the under-mattress;

FIGURE 2 is a section on the line IIII of FIGURE 1, with the under-mattress in an inflated condition; and

FIGURE 3 is an electrical and pneumatic circuit diagram of central apparatus for the under-mattress.

The under-mattress is built up of pieces of rubbercoated fabric, assembled in an unvulcanised condition, and then vulcanised. The mattress comprises a base member 1,

3,426,373 Patented Feb. 11, 1969 and two inflatable chambers 2 and 3 on opposite sides of the base member. The two chambers are identical in shape and construction and only the chamber 2 will be described in detail.

The chamber 2 is defined by a part of the base member 1, a rectangular side wall 4, triangular end walls 5 and 6 and an upper wall 7. The side wall 4 and base member I are joined together by a strip 8 of rubber-coated fabric, the side and upper walls 4 and 7 are joined by a similar strip 9, and the end wall 5 is joined to side wall 4, upper wall 7 and base member 1 respectively by strips 10, 11 and 12. The end wall 6 is similarly joined to the base 1, side wall 4 and upper wall 7. The corners of the mattresses have circular patches 2-1 applied thereto to hold them and make them airtight. The inner edges 13 and 14 of the chambers 2 and 3 respectively are curved, and converge towards the head end of the mattress. These edges are secured to the base member 1 by means of an extruded rubber section 15 and 16 respectively. Patches 22 are applied at the end of the sections 15 to ensure an airtight joint.

An inflation tube 17 is fitted into the sidewall 4, and a similar tube 18 fits into the side wall of the other chamber 3. The tube 17 has a rosette end 19 secured to the inner side of the wall 4, and is also secured to the outer side of this wall by a ring patch 20. Each of the inflation tubes 17 and 18 can be connected to a compressed air supply as will be described later.

The mattress as described is assembled by joining together the base, and the side, upper and end walls while laid flat, the joint being achieved by freshening the surfaces of these members and the surface of the joining strips, and rolling down and stitching the joints. Tacky rubber surfaces are dusted off as the work proceeds to avoid any accidental adhesion. The inflation tubes are fitted into the side walls. When the mattress is assembled in the flat the upper walls are folded over and joined to the end walls and the end edges of the side walls. The inner edge of each upper wall is then secured to the .respective extruded section 15 or 16 which is fixed to the base. The corner patches 21 and patches 22 are then applied, and the complete mattress is then vulcanised.

The area of the mattress is such that a person of any weight can readily be moved by a pressure of 1 lb. per square inch above atmospheric pressure, a pressure that can be achieved by the blowing end of a small vacuum cleaner connected to the inflation tube of the chamber. A simple stop or valve can be incorporated in the inflation tube so that after a period of time air can be released from the inflated chamber and the patient tilted in the opposite direction by inflating the other chamber. If desired, a simple regulation valve may be included which permits an inflated chamber to deflate gradually over a given period of time.

In cases where frequent examination of the patient by nursing staff is not required, the inflation chambers can be controlled to permit automatic inflation and deflation. Such a control unit will now be described with reference to FIGURE 3.

As shown in FIGURE 3 a pneumatic circuit comprises four air compressors for feeding into a common manifold M. Outlet through the manifold is by way of two solenoidcontrolled valves SV1 and SV2 controlling air supply to and from lines 23 and 24 respectively. Line 23 is connected to the inflation tubes 17 and 18. The valves SV1 and SV2 are two position valves connecting the tubes 23 and 24 either to the manifold M or to exhaust by way of regulator valves RV1 and RV2 respectively. Electrical connections to the one side of the solenoids of the valves SV1 and SV2 are made by way of a timer T to one side on an electrical input. This side of the input is also connected to the compressors C by way of the selector switch SS, and the input is made through a master switch 25.

In operation the master switch is closed and the selector switch is moved to select the required number of compressors to give the pressure required. For a heavier patient more compressors will be switched in than will be needed for a lighter patient. The timing unit T operates first to energise the solenoid of valve SV1 so connecting the line 23 to the manifold M as indicated by the solid line position of this valve. Air is thus pumped through the compressors from the manifold and valve SV1 into the chamber 2 to inflate this. During this time the solenoid of valve SV2 is not energised so that inflation chamber 3 is connected through line 24 and the valve SV2 to the regulator valve RV2 and thence to atmosphere as indicated by the solid position of valve SV2. After a predetermined interval the solenoid valve SV1 is de-energised to that the inflation chamber 2 is connected to the regulator valve RVl. The chamber 2 then deflates gradually over a period of time depending on the setting of the valve RV1. When the chamber 2 is deflated the timer makes a circuit to energise the valve of SV2 so that the chamber 3 is connected to the compressors and is thus inflated. Subsequently the solenoid of valve SV2 is de-energised and the chamber 3 connected to regulator valve RV2 to deflate gradually as required. This cycle is repeated and it will be seen that a patient is thus moved gradually through a few degrees from side to side at regular intervals so that the pressure points on the body are changed and the patients circulation is assisted.

It will readily be appreciated that the electrical and pneumatic circuits of the control unit can be subjected to considerable variation to give whatever result is required by the nursing staff. Furthermore, rather than have the walls to the inflatable chambers 2 and 3 formed directly by the walls of the mattress the chambers may be defined by separate inflatable bladders enclosed in pockets of the mattress. The shape of the individual chambers is not limited to that shown in the drawings, although this shape is particularly desirable in that the central hollow prevents the patient from being rolled out of bed on inflation of the chambers. Furthermore it means that only the torso of the patient is moved on inflation of the chambers and the lower part of the body tends to remain stationary so aiding to stabilise the patients position.

We claim:

1. An inflatable under-mattress comprising a base member having at each longitudinal side thereof an inflatable chamber, said chambers being independently inflatable, each of said chambers being so shaped that when inflated the upper surface thereof is inclined downwardly towards the center of the under-mattress and each of said chambers having one longitudinal side extending along the length of the under-mattress along one side thereof, and the other side of each of said chambers being so shaped as to increase the width of each of said chambers from the foot end to the head end of the under-mattress, whereby the upper body portion of a person is moved upon inflation of said chambers while the lower body portion tends to remain stationary.

2. An inflatable under-mattress according to claim 1 in which each of said inflation chambers is formed between said base member and a sheet of material positioned above said base member and connected thereto by way of free edges. W

3. An inflatable under-mattress according to claim 1 in which each of said chambers extends the full length of the under-mattress, and has said one side defined by said one side of the under-mattress and has said other side curved to increase the width of each of said chambers from the foot end to the head end of the under-mattress.

4. An inflatable under-mattress according to claim 1 in which means are provided for inflating said chambers alternately at regular intervals and for allowing said chambers to deflate gradually.

References Cited UNITED STATES PATENTS 1,772,310 8/1930 Hart 5348 XR 3,276,047 10/ 1966 Emery 5349 3,303,518 2/1967 Ingram 5349 FOREIGN PATENTS 811,378 8/1951 Germany. 629,620 3/ 1963 France.

BOBBY R. GAY, Primary Examiner.

A. CALVERT, Assistant Examiner.

US3426373A 1965-10-18 1966-10-17 Inflatable mattresses Expired - Lifetime US3426373A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4410465A GB1126364A (en) 1965-10-18 1965-10-18 An inflatable cushion, seat, mattress or other like article

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US3426373A true US3426373A (en) 1969-02-11

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US3426373A Expired - Lifetime US3426373A (en) 1965-10-18 1966-10-17 Inflatable mattresses

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US (1) US3426373A (en)
BE (1) BE688349A (en)
DE (1) DE1554160B1 (en)
DK (1) DK115143B (en)
GB (1) GB1126364A (en)
LU (1) LU52177A1 (en)
NL (1) NL6614627A (en)

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4100635A (en) * 1977-01-31 1978-07-18 Mitchell Michael W Water bed construction
WO1986003965A1 (en) * 1984-03-07 1986-07-17 Regionala Stiftelsen I Värmland Med Firma Erress Device comprising a mattress support
US4794659A (en) * 1984-12-19 1989-01-03 Fuji Electric Company Ltd. Fluid bed system
US4807313A (en) * 1985-12-03 1989-02-28 Ryder International Corporation Inflatable inclined mattress support system
US4829616A (en) * 1985-10-25 1989-05-16 Walker Robert A Air control system for air bed
US4897890A (en) * 1983-01-05 1990-02-06 Walker Robert A Air control system for air bed
US4915124A (en) * 1988-03-30 1990-04-10 Jasco Products, Inc. Bladder pressure control system and method
US4947500A (en) * 1988-08-25 1990-08-14 OBA AG and Hans Vollmin Therapeutic mattress, in particular for preventing or curing decubitus ulcers
US5152021A (en) * 1984-12-17 1992-10-06 Kinetic Concepts, Inc. Low air loss bag for patient support system
US5181288A (en) * 1989-05-30 1993-01-26 The Mediscus Group Inc. Therapeutic turning bed
US5606754A (en) * 1989-03-09 1997-03-04 Ssi Medical Services, Inc. Vibratory patient support system
US5745942A (en) * 1995-10-19 1998-05-05 Geomarine Systems, Inc. Simplified control for lateral rotation therapy mattresses
US5802645A (en) * 1984-12-17 1998-09-08 Kinetic Concepts, Inc. Low air loss bag for patient support
US5983429A (en) * 1994-02-15 1999-11-16 Stacy; Richard B. Method and apparatus for supporting and for supplying therapy to a patient
US6536056B1 (en) 1996-11-18 2003-03-25 John H. Vrzalik Bariatric treatment system and related methods
US6681425B2 (en) 2002-04-04 2004-01-27 Banyan Licensing Lc Adjustable bedrests positioned under a mattress to raise and lower the mattress at either the head location, a foot location or any other location
US6684425B2 (en) 2002-02-14 2004-02-03 Edmund Scott Davis Mattress retainer for adjustable bed
US6715172B2 (en) 2002-04-04 2004-04-06 Banyan Licensing Lc System for controlling the position of an inflatable bedrest positioned under a mattress
US6739005B2 (en) 2001-09-04 2004-05-25 Banyan Licensing Lc Bed with adjustable elevation components
US6892405B1 (en) 1994-05-09 2005-05-17 Kci Licensing, Inc. Therapeutic bed and related apparatus and methods
US20050114998A1 (en) * 2002-04-04 2005-06-02 Banyan Licensing Lc Inflatable bedrest
US20050229321A1 (en) * 1996-11-18 2005-10-20 Kci Licensing, Inc. Bariatric treatment system and related methods
US6993798B1 (en) 2003-07-30 2006-02-07 Noel Thomas Roberts Method and apparatus for leveling a transportable bed assembly
US20060053560A1 (en) * 2004-09-13 2006-03-16 The Coleman Company, Inc. Airbed with built-in air pump
US20060090261A1 (en) * 1995-01-31 2006-05-04 Kci Licensing, Inc. Bariatric bed apparatus and methods
US20060191538A1 (en) * 2001-10-22 2006-08-31 Map Medizin-Technologie Gmbh Application device for breathing mask arrangement
US20080313807A1 (en) * 2007-06-22 2008-12-25 Yu-Wen Cheng Transferring device for bed
US20090106893A1 (en) * 2007-10-30 2009-04-30 Jerry Blevins Inflatable air mattress for rotating patients
US20110047703A1 (en) * 2009-08-31 2011-03-03 Jean-Francois Tarsaud Lateral tilt device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4694520A (en) * 1986-01-15 1987-09-22 Ssi Medical Services, Inc. Patient support apparatus
GB9013738D0 (en) * 1990-06-20 1990-08-08 Rafferty Sylvia A The'stayput'ortheopedic cushion
GB2318392B (en) * 1996-10-17 2000-12-20 Huntleigh Technology Plc Pressure control system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR629620A (en) * 1927-05-12 1927-11-14 Const Metallurg Soc Et Method and control device for electric arc furnaces
US1772310A (en) * 1926-12-16 1930-08-05 Julian D Hart Variable-pressure bed or mattress
DE811378C (en) * 1949-09-06 1951-08-20 Hutchinson Sa Ets Compressed air mattress
US3276047A (en) * 1965-03-08 1966-10-04 William M Emery Twin-rest seat cushion
US3303518A (en) * 1962-03-05 1967-02-14 Ingram George Inflatable mattresses, pillows and cushions

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1005236B (en) * 1954-01-16 1957-03-28 Draegerwerk Ag Air mattress with a plurality of separate Luftraeumen
GB946831A (en) * 1960-09-05 1964-01-15 Vickers Res Ltd Improvements in or relating to mattresses
US3148391A (en) * 1961-11-24 1964-09-15 John K Whitney Support device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1772310A (en) * 1926-12-16 1930-08-05 Julian D Hart Variable-pressure bed or mattress
FR629620A (en) * 1927-05-12 1927-11-14 Const Metallurg Soc Et Method and control device for electric arc furnaces
DE811378C (en) * 1949-09-06 1951-08-20 Hutchinson Sa Ets Compressed air mattress
US3303518A (en) * 1962-03-05 1967-02-14 Ingram George Inflatable mattresses, pillows and cushions
US3276047A (en) * 1965-03-08 1966-10-04 William M Emery Twin-rest seat cushion

Cited By (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4100635A (en) * 1977-01-31 1978-07-18 Mitchell Michael W Water bed construction
US4897890A (en) * 1983-01-05 1990-02-06 Walker Robert A Air control system for air bed
US4890344A (en) * 1983-01-05 1990-01-02 Walker Robert A Air control system for air bed
WO1986003965A1 (en) * 1984-03-07 1986-07-17 Regionala Stiftelsen I Värmland Med Firma Erress Device comprising a mattress support
US5152021A (en) * 1984-12-17 1992-10-06 Kinetic Concepts, Inc. Low air loss bag for patient support system
US5802645A (en) * 1984-12-17 1998-09-08 Kinetic Concepts, Inc. Low air loss bag for patient support
US4794659A (en) * 1984-12-19 1989-01-03 Fuji Electric Company Ltd. Fluid bed system
US4829616A (en) * 1985-10-25 1989-05-16 Walker Robert A Air control system for air bed
US4807313A (en) * 1985-12-03 1989-02-28 Ryder International Corporation Inflatable inclined mattress support system
US4915124A (en) * 1988-03-30 1990-04-10 Jasco Products, Inc. Bladder pressure control system and method
US4947500A (en) * 1988-08-25 1990-08-14 OBA AG and Hans Vollmin Therapeutic mattress, in particular for preventing or curing decubitus ulcers
US6098222A (en) * 1989-03-09 2000-08-08 Hill-Rom Company, Inc. Vibratory patient support system
US20050034764A1 (en) * 1989-03-09 2005-02-17 Hanh Barry D. Patient support system
US5606754A (en) * 1989-03-09 1997-03-04 Ssi Medical Services, Inc. Vibratory patient support system
US6415814B1 (en) 1989-03-09 2002-07-09 Hill-Rom Services, Inc. Vibratory patient support system
US6820640B2 (en) 1989-03-09 2004-11-23 Hill-Rom Services, Inc. Vibratory patient support system
US5181288A (en) * 1989-05-30 1993-01-26 The Mediscus Group Inc. Therapeutic turning bed
US5983429A (en) * 1994-02-15 1999-11-16 Stacy; Richard B. Method and apparatus for supporting and for supplying therapy to a patient
US6892405B1 (en) 1994-05-09 2005-05-17 Kci Licensing, Inc. Therapeutic bed and related apparatus and methods
US7426760B2 (en) 1995-01-31 2008-09-23 Kci Licensing, Inc. Bariatric bed apparatus and methods
US20080289107A1 (en) * 1995-01-31 2008-11-27 Kci Licensing, Inc. Bariatric Bed Apparatus and Methods
US20060090261A1 (en) * 1995-01-31 2006-05-04 Kci Licensing, Inc. Bariatric bed apparatus and methods
US7827632B2 (en) 1995-01-31 2010-11-09 Vrzalik John H Bariatric bed apparatus and methods
US5745942A (en) * 1995-10-19 1998-05-05 Geomarine Systems, Inc. Simplified control for lateral rotation therapy mattresses
US6536056B1 (en) 1996-11-18 2003-03-25 John H. Vrzalik Bariatric treatment system and related methods
US20030208847A1 (en) * 1996-11-18 2003-11-13 Kinetic Concepts, Inc. Bariatric treatment system and related methods
US20050229321A1 (en) * 1996-11-18 2005-10-20 Kci Licensing, Inc. Bariatric treatment system and related methods
US6904631B2 (en) 1996-11-18 2005-06-14 Kci Licensing, Inc. Bariatric treatment system and related methods
US7346945B2 (en) 1996-11-18 2008-03-25 Kci Licensing, Inc. Bariatric treatment system and related methods
US6739005B2 (en) 2001-09-04 2004-05-25 Banyan Licensing Lc Bed with adjustable elevation components
US20060191538A1 (en) * 2001-10-22 2006-08-31 Map Medizin-Technologie Gmbh Application device for breathing mask arrangement
US6684425B2 (en) 2002-02-14 2004-02-03 Edmund Scott Davis Mattress retainer for adjustable bed
US6681425B2 (en) 2002-04-04 2004-01-27 Banyan Licensing Lc Adjustable bedrests positioned under a mattress to raise and lower the mattress at either the head location, a foot location or any other location
US20050114998A1 (en) * 2002-04-04 2005-06-02 Banyan Licensing Lc Inflatable bedrest
US6715172B2 (en) 2002-04-04 2004-04-06 Banyan Licensing Lc System for controlling the position of an inflatable bedrest positioned under a mattress
US6993798B1 (en) 2003-07-30 2006-02-07 Noel Thomas Roberts Method and apparatus for leveling a transportable bed assembly
US20060053560A1 (en) * 2004-09-13 2006-03-16 The Coleman Company, Inc. Airbed with built-in air pump
US20080313807A1 (en) * 2007-06-22 2008-12-25 Yu-Wen Cheng Transferring device for bed
US20090106893A1 (en) * 2007-10-30 2009-04-30 Jerry Blevins Inflatable air mattress for rotating patients
US20110047703A1 (en) * 2009-08-31 2011-03-03 Jean-Francois Tarsaud Lateral tilt device
US8429774B2 (en) 2009-08-31 2013-04-30 Hill-Rom Industries Sa Lateral tilt device
US8601622B1 (en) 2009-08-31 2013-12-10 Hill-Rom Industries S.A. Patient support apparatus including a lateral tilt device

Also Published As

Publication number Publication date Type
LU52177A1 (en) 1966-12-19 application
DE1554160B1 (en) 1972-05-31 application
NL6614627A (en) 1967-04-19 application
BE688349A (en) 1967-03-31 grant
DK115143B (en) 1969-09-08 grant
GB1126364A (en) 1968-09-05 application

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