US20080201858A1 - Mattress type support device including at least one solenoid valve for controlling fluid feed/vent to or from compartments of the mattress - Google Patents

Mattress type support device including at least one solenoid valve for controlling fluid feed/vent to or from compartments of the mattress Download PDF

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Publication number
US20080201858A1
US20080201858A1 US12/036,582 US3658208A US2008201858A1 US 20080201858 A1 US20080201858 A1 US 20080201858A1 US 3658208 A US3658208 A US 3658208A US 2008201858 A1 US2008201858 A1 US 2008201858A1
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Prior art keywords
compartments
valves
feed
vent
mattress
Prior art date
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Abandoned
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US12/036,582
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English (en)
Inventor
Jean-Luc Caminade
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Hill Rom Industries SAS
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Hill Rom Industries SAS
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Assigned to HILL-ROM INDUSTRIES SA reassignment HILL-ROM INDUSTRIES SA ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CAMINADE, JEAN-LUC
Publication of US20080201858A1 publication Critical patent/US20080201858A1/en
Priority to US14/541,720 priority Critical patent/US20150074914A1/en
Abandoned legal-status Critical Current

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    • 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
    • A47C27/08—Fluid mattresses or cushions
    • A47C27/10—Fluid mattresses or cushions with two or more independently-fillable chambers
    • 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
    • A61G7/05769—Arrangements for preventing bed-sores or for supporting patients with burns, e.g. mattresses specially adapted therefor with inflatable chambers
    • A61G7/05776—Arrangements for preventing bed-sores or for supporting patients with burns, e.g. mattresses specially adapted therefor with inflatable chambers with at least two groups of alternately inflated chambers
    • 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
    • A47C27/08—Fluid mattresses or cushions
    • A47C27/081—Fluid mattresses or cushions of pneumatic type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0603—Multiple-way valves
    • F16K31/0606—Multiple-way valves fluid passing through the solenoid coil
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0644—One-way valve
    • F16K31/0651—One-way valve the fluid passing through the solenoid coil

Definitions

  • the present disclosure relates to a support device of the mattress type, in particular for supporting the body of an individual, the device having a plurality of compartments suitable for being inflated with a fluid, in particular inflated with compressed air.
  • Some mattresses have compartments in the form of sausage-shaped tubes, each tube extending transversely relative to the longitudinal direction of the mattress, and the various tubes being placed side by side in the longitudinal direction of the mattress.
  • Each compartment generally has a fluid feed orifice and a fluid vent orifice.
  • a first solenoid valve is opened in order to cause the compartment to be fed through said feed orifice, and then the valve is closed once the required pressure has been reached, while a second solenoid valve that serves to vent fluid from said vent orifice is kept closed.
  • said first valve that controls the feed orifice is kept closed, while the second valve controlling venting from the vent orifice is opened.
  • Mattresses of this type are used in medical situations, since they enable fluid distribution within the mattress to be controlled better. Above all, depending on the number of valves used, they make it possible to control pressure individually and thus to fill compartments individually in various zones of the mattress.
  • FIGS. 1 and 3 there are shown diagrammatically mattresses each having sixteen compartments subdivided into three zones:
  • Controlling and regulating the filling/emptying of compartments using solenoid valves also makes it possible to enable the mattress to operate in a so-called “alternating pressure” mode in which a certain number of compartments that are regularly spaced apart along the length of the mattress are deflated and then re-inflated, simultaneously for the various compartments concerned. For example, it is possible to deflate/re-inflate one compartment in two or one compartment in three, and then to deflate/re-inflate the compartments adjacent to the compartments that were previously deflated and then re-inflated.
  • each compartment of the mattress is successively deflated/re-inflated in turn from compartment to neighboring compartment, thereby creating a kind of wave that moves in the longitudinal direction of the mattress in both the go and the return directions, thereby massaging the patient and encouraging vascularization of the soft tissue at the interface with the mattress while re-inflating the compartment, or minimizing the effects of ischemia, in particular anoxia or hypoxia, while deflating the compartment.
  • valves in use are designed to be mounted together in units, in particular pneumatic manifolds, and more generally in multiple manifolds constituting a manifold unit that is itself combined, where appropriate, with an electronic control unit serving to control the feeding and venting of the fluid to or from the various compartment zones of the mattress and in a manner that is modulated and controlled.
  • the various feed valves are fed with fluid from a common feed source, where appropriate a common pump or compressor, in order to inject air or compressed gas as appropriate into the compartments.
  • Those manifold type units for controlling and distributing fluid group together the various valves and, by way of example, they are located at the foot of the bed, so they are necessarily relatively far away from some of the compartments to which the valves are connected by feed pipes and by vent pipes.
  • each valve serves to feed or vent a plurality of compartments in order to limit the number of valves.
  • Limiting the number of valves also serves to limit the number of pipes going from the manifold and thus the space occupied by the pipes. Nevertheless, that requires valves to be used that are dimensioned so as to be capable of delivering fluid at a rate that is sufficient for feeding a plurality of compartments.
  • FIG. 1 shows a manifold having three feed valves on which there are mounted three main feed pipes each having secondary feed pipes branching therefrom via T-couplings in order to feed n compartments.
  • n secondary vent pipes connected to the vent orifices of said compartments are connected via T-couplings to three main vent pipes, with the main vent pipes serving to convey fluid to three vent valves mounted on a common manifold.
  • valves V 3 and V 6 together control a single compartment for a head or first zone, respectively via a first main feed pipe and a first vent pipe.
  • Valves V 2 and V 5 serve respectively to feed and vent twelve compartments of a middle zone extending under the entire body from the shoulders down to the legs, the twelve compartments being fed and vented respectively via twelve secondary feed pipes and secondary vent pipes, themselves connected respectively to a second main feed pipe and to a second main vent pipe that are connected to said corresponding valves.
  • valves V 1 and V 4 control the filling and emptying of three compartments constituted by a foot zone via a third main feed pipe and a third main vent pipe, each third main feed pipe and main vent pipe being connected respectively to three other secondary feed pipes and to three other secondary vent pipes.
  • FIG. 2 shows a variant of the device for feeding a mattress having sixteen compartments likewise distributed in three zones, but capable of operating in an “alternating pressure mode” with it being possible for one compartment in three to be deflated/re-inflated in alternation, thus requiring fourteen valves to be used (seven feed valves and seven vent valves) together with seven main feed pipes and seven main vent pipes.
  • the main feed or vent pipes need to present a certain amount of rigidity and a section having a certain diameter in order to enable them to feed a plurality of secondary pipes, and also to avoid accidental kinking on their paths between the manifold and the furthest compartment.
  • These pipes are disposed beside the mattress, generally inside a cover for protecting the mattress. It will be understood that such a large number of pipes constitutes a large bulk that is difficult to put into place and to use. Increasing the number of pipes increases the risk of kinking.
  • the pipes present circular sections of outside diameter lying in the range 10 millimeters (mm) to 20 mm, and more particularly of about 15 mm, and an inside diameter lying in the range 5 mm to 15 mm, and more particularly of about 10 mm.
  • each valve must be capable of controlling the filling or venting of a plurality of compartments over a distance that is relatively long, said valves must be capable of delivering fluid at a relatively high rate, which in practice may be as much as 50 liters per minute (L/min).
  • Such valves thus represent weight, size, and cost that are relatively great, not to mention the weight, the size, and the cost of the manifold unit itself.
  • This disclosure discusses a device for feeding/venting fluid to or from a plurality of compartments of a mattress, which device is more compact and less expensive, simpler and easier to implement, and generally is improved compared with the system presently in use.
  • This disclosure discusses a device for feeding/venting fluid to or from a plurality of compartments of a mattress that can be used for controlling and regulating the filling/emptying of fluid to and from each compartment individually and without involving excessive difficulty in implementation, as applied to the systems presently available.
  • This disclosure further discusses a device for feeding/venting fluid to or from a plurality of compartments of a mattress that can operate in a variety of types of modes that can be selected as alternatives.
  • the present disclosure discusses a mattress type support device in particular for supporting the body of an individual, the device comprising a plurality of n compartments, preferably at least three compartments, more preferably three to 24 compartments suitable for being inflated by a fluid, in particular inflated with air, a plurality p of said compartments, where p is an integer lying in the range 2 to n, each having at least one fluid feed and/or vent orifice for said compartment and at least one solenoid valve enabling fluid feed and/or fluid vent to be controlled for said compartments, the device being characterized in that each said valve co-operates with or is integrated in one of said feed and/or vent orifices, each said valve being dedicated to filling and/or emptying a single compartment, said valve not co-operating with or not being integrated in a manifold type unit.
  • each compartment has a fluid feed orifice and a fluid vent orifice and each said compartment in question has or co-operates with two valves, respectively a feed valve and a vent valve, one serving to control fluid feed and the other to control fluid vent, said valves being integrated in or co-operating with said feed and vent orifices respectively, each said valve being dedicated respectively to filling or emptying a single compartment.
  • This embodiment has two-port valves (referred to as “2/2 valves”) to be used and makes it possible to regulate pressure in compartments fitted with two valves, i.e. one valve at each orifice, one for feeding and the other for venting the compartment.
  • 2/2 valves two-port valves
  • each of said compartments concerned i.e. each compartment having or co-operating with a said valve, has a single orifice co-operating with a single valve through which said compartment is both fed and vented.
  • Said valve co-operates with or is integrated in a single open orifice acting both as a feed orifice and as a vent orifice depending on whether or not said valve is activated, with the other orifice, if any, then being closed.
  • This other embodiment requires three-port valves to be used (known as “3/2 valves”).
  • These three-port valves comprise:
  • such three-port valves make it possible only to control inflation/deflation of a compartment, without making it possible to regulate its pressure.
  • said 2/2 or 3/2 valves serve to feed/empty a single compartment only, they may be of a size that is relatively much smaller than that of the valves conventionally used, since the prior art valves oftentimes are dedicated to feeding/venting a plurality of compartments.
  • valves For identical pressure above atmospheric in a compartment, the required fluid flow rates, and thus the flow sections required for the valves are much smaller with valves discussed in this disclosure than they are with valves each dedicated to a plurality of compartments.
  • valves that are used and positioned directly at the orifices of the compartments the distance between the feed and vent valves, and thus the head losses between said feed and vent valves are minimized compared with valves that are offset to a common remote centralized position, e.g. at the foot of the bed as in the prior art.
  • valves disclosed herein may be configured to deliver fluid at a relatively low rate (since each feeds only one compartment) and they can therefore be of size and weight that are smaller than the size and weight of valves feeding a plurality of compartments, as conventionally implemented in a manifold unit of the remote type, e.g. located at the foot of the bed.
  • the solenoid valves also consume less energy for their control, and in particular they consume only about one-tenth compared with the solenoid valves that are used conventionally.
  • valves according to this disclosure serve to regulate or adapt the inflation of compartments and to make pressure corrections within compartments with a reaction time that is much shorter.
  • the reaction time of the valves conventionally used in a manifold unit of the type that is offset to the foot of the bed is about 1 second (s) to 3 s, whereas with the devices in accordance with this disclosure it is of the order of 1 ⁇ 2 s to 1 s, or even less.
  • each compartment it is possible to allocate a single three-port valve to each compartment, each said valve co-operating with a single open orifice serving to feed and vent fluid to and from the compartment, with its other orifice, if any, being plugged.
  • the devices disclosed herein also makes it possible to provide mattress type support devices with alternating emptying/filling of the various compartments being performed in a variety of modes that can be selected by appropriately programming the control of the valves.
  • valves as dedicated in this way to each compartment and as located adjacent to the mattress serves above all to make the valves much easier to put into place and to use, particularly since it is then possible to use a simplified network of pipes for transferring fluid in the fluid feed/vent device, which network is smaller when deployed.
  • One advantage of some embodiments of the devices disclosed herein thus lies in the simplified installation and reduced size of the device comprising valves and pipes for feeding/venting fluid to and from said compartments.
  • the devices disclosed herein also makes it easy to adapt the operating features of the mattress on request, merely by adding or removing valves, thus enabling the functional features of the mattress to be varied without it being necessary to modify the pneumatic distribution network, as is necessary in the prior art.
  • the device has only one main feed pipe with a plurality of branch connections for connecting to a plurality of said valves, each co-operating directly with or integrated in a corresponding feed orifice selected amongst a plurality of compartments, and preferably amongst all of the compartments, said feed orifices being disposed on one longitudinal side of the mattress type device and said main feed pipe running along said longitudinal side, said main feed pipe being fed from a common fluid injection device.
  • Branch connection for connecting is used herein to cover, among other things, devices in which the main feed pipe has branches, e.g. via a plurality of T-couplings, whose other ends are fitted directly to the coupling endpieces of the valves or else via short lengths of secondary feed pipes having their ends connected respectively to the endpieces of the T-couplings located on the main feed pipe and to the coupling endpieces of the valves.
  • valve co-operating directly with an orifice is used herein to cover, among other things, that an endpiece of the valve is fitted directly to the orifice, e.g. by being forced into said orifice.
  • the bundle or network of tubes feeding the various compartments from the various valves may be replaced, in part, with a bundle or network of electric wires for electrically powering the solenoid valves, which network of wires is much more compact.
  • One embodiment of a valve disclosed herein for controlling feeding and/or venting fluid to or from a compartment may be capable of conveying fluid at a flow rate that is divided by p relative to the flow rate of a valve that controls the feeding or venting of fluid to or from p compartments.
  • the valves disclosed herein may be configured to convey fluid flows in the range 1 L/min to 5 L/min instead of 50 L/min as has been conventional.
  • said valves may comprise at least:
  • the serrated outside surface provides better retention in said tubular orifice after being forced into an elastic tubular orifice.
  • each of said feed valves may include a second endpiece of circular cross-section, preferably presenting a serrated outside surface in particular, said second endpiece being forced into one end of a branch pipe connected to said main feed pipe and said second endpiece containing a second cylindrical axial internal channel for passing said fluid.
  • each of said vent valves may include a second endpiece of circular cross-section, said second endpiece enabling said fluid to be vented to the atmosphere.
  • Said second endpiece of each of said vent valves in some embodiments, is therefore not connected to one end of a vent pipe or of a branch pipe connected to a main vent pipe, the device of such embodiments not requiring such a vent pipe to be used.
  • valves and said feed pipe are placed inside a cover for protecting the mattress.
  • said vent valves co-operating with or integrated in said vent orifices are not connected to a vent pipe, the fluid being a gas, and in particular air, that is vented to the atmosphere either freely or, where appropriate, into a said protective cover.
  • valves are controlled by an electronic control unit making it possible to select between implementing:
  • all the compartments may include said feed valves and/or vent valves, which valves are controlled by an electronic control unit serving to implement a selected one of various alternating pressure modes in which a fraction of the compartments that are regularly spaced apart are deflated, at least in part, and then re-inflated, with this being done in some instances to one compartment in two or one compartment in three, with each of the compartments being deflated/re-inflated from compartment to neighboring compartment in the longitudinal direction of said mattress both in the go direction and in the return direction.
  • an electronic control unit serving to implement a selected one of various alternating pressure modes in which a fraction of the compartments that are regularly spaced apart are deflated, at least in part, and then re-inflated, with this being done in some instances to one compartment in two or one compartment in three, with each of the compartments being deflated/re-inflated from compartment to neighboring compartment in the longitudinal direction of said mattress both in the go direction and in the return direction.
  • valves may be small in size and of a shape that is suitable for enabling them to be positioned at the feed and vent orifices of the compartments inside a protective cover disposed around said mattress and without running any risk of damaging the mattress or the cover due to their shape, and without running any risk of hurting or getting in the way of the patient when the mattress is deflated.
  • each of said valves has two of said endpieces, namely a first endpiece and a second endpiece disposed symmetrically relative to a main body defining an outside surface of preferably rounded shape, said main body being cylindrical in shape, said main body having the same longitudinal axis as said first and second endpieces.
  • the outside diameter of said cylindrical body may be substantially identical to or a little greater than that of said feed pipe.
  • the valve can be placed in line with the pipe in a compact configuration.
  • said main body has a cylindrical internal cavity into which both of said first and second internal channels having the same longitudinal axis open out, said internal cavity containing a longitudinal magnetic core suitable for being moved in said axial longitudinal direction of said valve, said magnetic core moving inside an induction coil extending axially along the same said longitudinal axis, said core being capable of moving between firstly an open position in which the core is separated from the ends of both of said first and second internal channels on the same longitudinal axis opening out into said internal cavity so as to allow the fluid to pass through said valve between the ends of both of said first and second endpieces, and secondly a closed position in which said core closes the end of one of said first and second internal channels of the valve where it opens out into said internal cavity in such a manner as to prevent the fluid flowing through said valve between the ends of said first and second endpieces.
  • valve disclosed herein is sometimes referred to as being “compact” and “in line” since its various component elements are disposed on a common axis that is the same as the longitudinal axis of the valve.
  • the flow of fluid through the valve between its first and second endpieces takes place axially along the same longitudinal axis as the valve axis, unlike conventional valves in which the axis of the core and the movement of the core are generally perpendicular to a fluid flow duct within the valve.
  • said core in the absence of said core being electrically activated by said coil, said core is held in its closed position by a spring acting on the core so as to hold it against one of the two ends of said channels opening out into said cavity, and when the core is moved into the open position by electrically activating the coil, the core is moved so as to act against the spring and disengage the core from the said end of said internal channel in such a manner as to be spaced apart from both ends of said channels opening out into said cavity.
  • This variant is generally selected since once the compartments are appropriately adjusted in pressure, the mattress is said to be “in equilibrium.” It then requires no more than pressure adjustments to be made from time to time, should the patient change position. In practice, the valves may not be operated for 75% of the time or more.
  • said core in the absence of said core being electrically activated by said coil, said core is held in the open position by a spring acting on the core so as to keep it away from both of the ends of said first and second channels opening out into said cavity, and when the core is moved by electrically activating the coil, the core is moved in such a manner as to be held against one of the two ends of said first and second channels opening out into said cavity, thereby closing it.
  • fluid can flow through said cavity between said core and said coil via grooves formed in the outside surface of the core, and/or via a hole passing longitudinally through the core.
  • valve When said valve is a three-port valve, it further may include a third internal channel enabling said internal cavity to be put into communication with the outside (i.e. the atmosphere) in such a manner that:
  • the valves may present a total length lying in the range 3 centimeters (cm) to 10 cm, preferably in the range 4 cm to 6 cm, and an outside surface of circular cross-section having a maximum diameter lying in the range 10 mm to 20 mm, said first and second endpieces preferably presenting a circular cross-section of diameter lying in the range 5 mm to 15 mm, and more preferably having internal channels with a diameter lying in the range 2 mm to 10 mm, and preferably lying in the range 4 mm to 7 mm.
  • the present disclosure discusses compact solenoid valves disposed in line, each comprising a said main body with an internal cavity containing a core and an induction coil having the same longitudinal axis (X 1 X′ 1 ), each of said first and second endpieces containing a first or second internal channel and being disposed symmetrically relative to said main body and on the same longitudinal axis (X 1 X′ 1 ) as said main body, and said first and second endpieces are engaged in bent tubular orifices of said mattress and respectively bent ends of branch pipes, and are offset longitudinally in the longitudinal direction of the mattress so as to enable said valves to be placed in alignment in said longitudinal direction XX′ of said feed pipe and of said mattress.
  • said main body, said first and second endpieces, and said first and second internal channels are of circular cross-section.
  • the various solenoid valves are connected to a control unit making it possible to select a control mode from a continuous mode and a different mode known as an alternating pressure mode, thereby making it possible on request to massage at least a portion of the body of the patient resting on said mattress.
  • the electronic control unit for controlling the solenoid valves is connected to at least one sensor and said unit includes electronic means suitable for controlling air feed or air vent to or from said compartments in such a manner as to maintain a given air pressure within each said compartment, preferably in such a manner that the pressure applied to the surface of the mattress by the body of a patient lying thereon is substantially identical over the entire area of the body that is in contact with the mattress.
  • FIGS. 1 and 2 are diagrams showing two prior art pneumatic distribution networks feeding various compartments of a mattress from a manifold, respectively comprising six solenoid valves ( FIG. 1 ) and fourteen solenoid valves ( FIG. 2 );
  • FIGS. 3A and 3B are diagrams showing the distribution of solenoid valves in a device according to this disclosure using two-port valves ( FIG. 3A ) and three-port valves ( FIG. 3B );
  • FIG. 4 is a side view of a mattress including a device according to this disclosure
  • FIG. 5 is a longitudinal section view of a two-port solenoid valve according to this disclosure.
  • FIG. 6 is a longitudinal section view of a three-port solenoid valve according to this disclosure.
  • FIGS. 7A and 7B are views looking along arrows VIIA and VIIB of FIG. 5 ;
  • FIG. 8 shows a prior art solenoid valve.
  • FIG. 1 is a diagram showing a mattress of the prior art comprising sixteen compartments made up of sausage-shaped tubes extending transversely to the longitudinal direction (XX′) of the mattress.
  • FIG. 2 shows a system for feeding/venting air to or from the various compartments from a manifold unit comprising a feed manifold M 1 having three solenoid valves V 1 , V 2 , V 3 and a vent manifold M 2 comprising three vent solenoid valves V 4 , V 5 , V 6 .
  • This manifold unit is combined with an electronic control unit (not shown).
  • the feed manifold M 1 is connected to a single pump/compressor 7 .
  • Each feed valve V 1 and V 3 is connected to a main feed pipe t 1 to t 3 feeding one compartment zone (Z 1 to Z 3 ).
  • the solenoid valve V 1 feeds the three compartments of the zone T from the main feed pipe t 1 , which pipe t 1 has two T-couplings each serving to feed a branch-connected secondary pipe t′ 1 for the purpose of providing a connection via a tubular connection endpiece to a tubular feed orifice 4 - 1 of each compartment.
  • the T-coupling presents tubular endpieces with serrated outside surfaces.
  • vent pipes t′ 4 are connected via “serrated” type tubular endpieces and are in turn connected via T-couplings to a common main vent pipe t 4 connected to the vent solenoid valve V 4 of the vent manifold M 2 .
  • the solenoid valves V 2 and V 5 control respectively feeding and venting the twelve compartments of the body zone via a main feed pipe t 2 and a main vent pipe t 5 connected to the feed and vent solenoid valves V 2 and V 5 respectively of the manifold unit.
  • the feed orifices 4 - 1 of the twelve compartments of the body zone are connected to the main feed pipe t 2 via secondary feed pipes t′ 2 connected by T-couplings to the pipe t 2 and via tubular endpieces (not shown) to tubular feed orifices 4 - 1 .
  • secondary vent pipes t′ 5 provide connection between the tubular vent orifices 4 - 2 to which they are connected via tubular endpieces (not shown) at one end, and at their opposite ends to the main vent pipe t 5 via respective T-couplings.
  • the feed solenoid valve V 3 and the vent solenoid valve V 6 serve respectively to control feeding and venting the single compartment of the head zone via a main feed pipe t 3 and a main vent pipe t 6 to which they are respectively connected.
  • This pneumatic connection network between the manifolds and the various compartments of the mattress shown in FIG. 1 operate in a mode known as “continuous pressure” mode, since all of the compartments in each zone are fed and/or vented in identical manner, with the only modulation possible being between the various zones using the three pairs of feed/vent solenoid valves.
  • FIG. 2 shows a mattress of the same type, but connected to an air feed/vent system that can operate in an “alternating pressure” mode in which every third compartment can be deflated, with each successive compartment being successively deflated and re-inflated.
  • This alternating pressure mode requires the control of the various compartments within each zone to be subdivided into thirds, where appropriate.
  • FIG. 2 in order to operate in a one-in-three alternating pressure mode, it can be seen that it is necessary to implement the following solenoid valves and pipes: three feed valves V 1 , V 2 , V 3 acting via three main feed pipes t 1 , t 2 , and t 3 to feed the three feed orifices of the three compartments of the foot zone. And symmetrically, three main vent pipes t 8 , t 9 , and t 10 providing connections between the vent orifices of the compartments in the foot zone and three vent valves V 8 , V 9 , and V 10 .
  • This installation thus makes it possible to deflate successively each of the compartments in the foot zone, while the other two compartments remain inflated.
  • each of the main feed pipes t 4 , t 4 , and t 6 feeds four branch pipes t′ 4 , t′ 5 , and t′ 6 respectively.
  • three branch secondary pipes t′ 11 , t′ 12 , and t′ 13 are connected to three main vent pipes t 11 , t 12 , and t 13 , respectively.
  • the feed solenoid valve V 7 and the vent solenoid valve V 14 respectively control feeding and venting the head zone, respectively via a main feed pipe t 7 and main vent pipe t 14 .
  • the various feed and vent pipes t 1 to t 14 and t′ 2 to t′ 13 are sufficiently rigid to avoid kinking, while being sufficiently flexible to be capable of following paths that are relatively curved.
  • FIGS. 3 and 4 are diagrams showing a system for feeding/venting the various compartments of a mattress in accordance with this disclosure.
  • a common air injection device 7 acts via a single feed main tube 5 (referred to as a “bus”) to feed sixteen two-port feed solenoid valves 3 - 1 connected directly to each of the sixteen feed orifices 4 - 1 of each of the sixteen compartments 2 , being disposed on the same longitudinal side of said mattress.
  • a single feed main tube 5 referred to as a “bus”
  • sixteen vent orifices 4 - 2 which are connected directly to sixteen two-port vent solenoid valves 3 - 2 venting air from said compartments 2 into the atmosphere and not into a vent pipe, as in the prior art of FIGS. 1 and 2 .
  • the feed and vent tubular orifices 4 - 1 and 4 - 2 together with the feed and vent valves 3 - 1 and 3 - 2 are disposed in a direction that is perpendicular to the longitudinal direction XX′ of the mattress and of the feed pipe 5 .
  • feed and vent tubular orifices together with branch pipe ends 6 that are bent through 90° and offset longitudinally in the direction XX′ so as to make it possible to place the two-port valves 3 - 1 and 3 - 2 in alignment in the longitudinal direction XX′ of the feed pipe and of the mattress, in order to further reduce overall size, as described below for the three-port valves 3 - 3 of FIG. 3B .
  • FIG. 4 shows a device in accordance with this disclosure combined with a sensor 18 connected to the general control unit 8 and making it possible also via an electrical connection 19 to control the pump or compressor 7 .
  • FIGS. 3 and 4 also show diagrammatically some of the electric wires 9 for electrically powering the solenoid valves 3 - 1 and 3 - 2 , which wires are also shown in FIGS. 5 and 7A .
  • the feed and vent valves 3 - 1 and 3 - 2 present a structure of the kind shown in FIG. 5 .
  • the cylindrical main body 10 has an internal cavity 11 containing an induction coil 12 disposed axially relative to the longitudinal axis X 1 X′ 1 of the valve. Inside the internal cavity 11 there is placed a cylindrical longitudinal magnetic core 13 suitable for moving inside the internal cavity 11 in the longitudinal direction X 1 X′ 1 under drive from the coil 12 when it is activated electrically.
  • each of the various valves 3 - 1 , 3 - 2 is connected via electrical power supply wires 9 to a centralized control unit 8 serving to activate the induction coils 12 electrically and to move the cores 13 , as explained below.
  • the valve 10 has respective first and second endpieces 13 - 1 and 13 - 2 of circular cross-section disposed axially and symmetrically relative to each other.
  • endpieces 13 - 1 and 13 - 2 define respective serrated outside surfaces having serrations 14 of circular cross-section.
  • These serrations 14 define serrated endpieces suitable for connecting said endpieces to feed tubular orifices 4 - 1 or to vent tubular orifices 4 - 2 , or where appropriate to secondary feed pipes 6 .
  • Each first endpiece 13 - 1 has a first axial internal channel 14 - 1 opening out at one end into the internal cavity 11 and at its other end into a compartment 2 when said first endpiece 13 - 1 is brought into a feed tubular orifice 4 - 1 or into a vent tubular orifice 4 - 2 .
  • each second endpiece 13 - 2 has a second axial internal channel 14 - 2 communicating with the internal cavity 11 and the free end of the second endpiece 13 - 2 .
  • the second endpieces 13 - 2 are connected to the secondary feed pipes 6 for the feed valves 3 - 1 and they open out to the atmosphere for the vent solenoid valves 3 - 2 .
  • the opening and closing operation of said two-port valves 3 - 1 and 3 - 2 can be implemented in two modes of operation.
  • FIG. 3B shows a variant embodiment of a mattress according to this disclosure in which some of its compartments are fitted with respective single three-port solenoid valves.
  • the compartments of the foot and head zones Z 1 and Z 3 are inflated in continuous mode from a device 7 that delivers air at a pre-calibrated pressure.
  • FIG. 3B embodiment is particularly useful for providing a massage mattress in the body zone Z 2 by operating in an alternating pressure mode of operation, as explained below.
  • the three-port valves 3 - 3 are disposed longitudinally along a common axis XX′ of the mattress and of the feed pipe 5 .
  • the feed/vent tubular orifices 4 - 3 and the branch-pipe ends 6 are bent through 90° and offset longitudinally in the direction XX′ so as to make it possible to place first and second endpieces of the three-port valves 3 - 3 in alignment on said longitudinal direction XX′ of the feed pipe and of the mattress so as to optimize compactness of the installation.
  • FIG. 6 shows a three-port solenoid valve with two longitudinal internal channels, Specifically:
  • the spring 15 exerts a pressure on the core 13 so that it moves longitudinally and closes the end of the third channel 14 - 3 , while leaving open the end of said first channel 14 - 1 that opens out into said cavity parallel to the end of said third channel 14 - 3 .
  • the fluid can be fed freely to the compartments 2 by passing via the first and second internal channels 14 - 1 and 14 - 2 and via the internal cavity 11 .
  • the air contained in said compartment can be vented by passing through the first internal channel 14 - 1 , then the internal cavity 11 , and then be vented to the atmosphere via the third internal channel 14 - 3 , thereby deflating the compartment.
  • FIG. 8 is a view showing a conventional solenoid valve 3 - 4 in which the movement of the core 13 a under drive from a coil 12 a (not shown) and from a spring 15 a takes place perpendicularly to the direction X 1 X′ 1 along which the fluid flows through said valve between its two endpieces.
  • valves 3 - 1 to 3 - 3 of disclosed herein are incorporated in the tubular orifices 4 - 1 to 4 - 3 of the compartments 2 , and not offset to a centralized location remote from the tubular orifices, as in the prior art, each valve serves to control only one compartment, and head losses between the valve and the compartment are considerably reduced compared with the prior art.
  • valves at the orifices of the compartments makes it possible to use valves of small dimensions in which it suffices, in practice, to deliver air at a rate of 1 L/min to 5 L/min, thereby requiring the use of pressures of 10 mbar to 100 mbar, with the channels 14 - 1 and 14 - 2 having inside diameters lying in the range 5 mm to 8 mm, and more particularly being about 7 mm.
  • the valves present a total length lying in the range 50 mm to 70 mm, and more particularly a length of 60 mm for an outside diameter of the main body lying in the range 15 mm to 20 mm, more precisely being about 17 mm.
  • Said first and second endpieces present a maximum diameter of about 11 mm.
  • a valve of the kind described above presents a weight lying in the range 15 g to 20 g, such that even when using a larger number of valves (thirty-two valves in FIG. 3 compared with fourteen valves in FIG. 2 ), the total weight of the air feed/vent system of some embodiments, such as shown in FIG. 3 , remains much smaller than that of the prior art air feed/vent system of FIGS. 1 and 2 .
  • FIGS. 5 to 7 show said first and second endpieces 13 - 1 and 13 - 2 having the same outside diameter of about 11 mm to enable them to be forced into the ends of the pipes 6 and into the tubular orifices 4 - 1 of present standard compartments having an inside diameter of about 10.5 mm so that they become deformed and the connection is secure. It is desirable to maintain an inside diameter for the main feed pipe 5 having a value of about 10 mm so as to enable all of the valves to be fed at the above-specified flow rate.
  • valves replace the tubular elements connecting between the tubular orifices of the compartments and the feed or secondary vent pipes.
  • a feed/vent system according to this disclosure can be implemented stems from the fact that the control unit at the foot of the bed 8 is much less bulky, insofar as there is no longer any need for a manifold unit centralizing the various valves.
  • the networks of air feed and vent pipes between the valves and the various compartments are eliminated and replaced by a single main feed pipe 5 , the network of feed and vent pipes being replaced by a network of electric wires 9 serving to deliver electrical power to the various solenoid valves.
  • feed/vent system of some embodiments makes a greater degree of modularity possible since each compartment can be controlled individually and independently of any of the others.
  • the devices according to this disclosure make it possible to select alternating modes of deflating one compartment in two or one compartment in three as a function of the programming of the electronic control unit 8 placed at the foot of the bed and to which the various solenoid valves are connected.
  • valves are distributed over the surface of the mattress, that makes the mattress easier to handle by nursing staff.
  • the various valves are activated using very low levels of electric power that do not involve any heating, so they can operate in contact with the compartments even in the confined surroundings within the protective cover, providing they are made of materials that are stainless in a moist atmosphere.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Mechanical Engineering (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)
US12/036,582 2007-02-27 2008-02-25 Mattress type support device including at least one solenoid valve for controlling fluid feed/vent to or from compartments of the mattress Abandoned US20080201858A1 (en)

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FR0701391A FR2912884B1 (fr) 2007-02-27 2007-02-27 "dispositif de support de type matelas comprenant au moins une electrovanne permettant de commander l'alimentation/evacuation de fluide dans des compartiments du matelas"
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Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080289114A1 (en) * 2007-05-25 2008-11-27 Jean-Louis Viard Pneumatic control valve and power reserve for a mattress
GB2472819A (en) * 2009-08-19 2011-02-23 Mjs Healthcare Ltd A support with a layer of inflatable cells wherein different groups of cells can simultaneously be inflated or deflated
GB2472818A (en) * 2009-08-19 2011-02-23 Mjs Healthcare Ltd A support with inflatable cells wherein the cells at one end have a smaller diameter
US20110197366A1 (en) * 2010-02-12 2011-08-18 Lachenbruch Charles A Method and Apparatus for Relieving Shear Induced by and Occupant Support
GB2495521A (en) * 2011-10-12 2013-04-17 Almec Eas Ltd Device for inflating an air chamber in a seat or bed
US8683633B2 (en) 2011-08-21 2014-04-01 Zheng CAO Mattress with concealed massage units
US20140173825A1 (en) * 2011-06-16 2014-06-26 Picard Healthcare Technology (Dongguan) Co. Ltd. Medical air mattress, method to inflate/deflate a medical air mattress and method to incline the bearing surface of a medical air mattress
US8789224B2 (en) 2000-11-07 2014-07-29 Tempur-Pedic Managemant, LLC Therapeutic mattress assembly
US20140317855A1 (en) * 2011-08-16 2014-10-30 Leyton Stevens Pressure relieving mattress
WO2015124897A3 (en) * 2014-02-20 2015-10-29 Huntleigh Technology Limited Improvements in and relating to cell inflation of a mattress
CN106806077A (zh) * 2017-03-21 2017-06-09 河北工业大学 一种自动翻身气囊护理床垫
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US10335335B2 (en) * 2014-07-15 2019-07-02 Paramount Bed Co., Ltd. Air mattress for gatch bed
CN111166574A (zh) * 2020-01-02 2020-05-19 温州医科大学 一种气垫可调节防褥疮医疗床结构
US20210227991A1 (en) * 2020-01-24 2021-07-29 Patientech Llc Controllable beds
US11344461B2 (en) * 2020-07-17 2022-05-31 Toyota Motor Engineering & Manufacturing North America, Inc. Support cushion liners comprising artificial muscles
US11510838B2 (en) * 2018-03-06 2022-11-29 Dallas LA PORTA Methods, apparatuses and systems for applying pressure to a newborn baby

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Citations (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4745647A (en) * 1985-12-30 1988-05-24 Ssi Medical Services, Inc. Patient support structure
US4768249A (en) * 1985-12-30 1988-09-06 Ssi Medical Services, Inc. Patient support structure
US4803744A (en) * 1987-05-19 1989-02-14 Hill-Rom Company, Inc. Inflatable bed
US4838309A (en) * 1985-12-30 1989-06-13 Ssi Medical Services, Inc. Variable flow gas valve
US4949413A (en) * 1985-12-30 1990-08-21 Ssi Medical Services, Inc. Low air loss bed
US5051673A (en) * 1985-12-30 1991-09-24 Goodwin Vernon L Patient support structure
US5272778A (en) * 1989-01-25 1993-12-28 The Mediscus Group Inc. Valve useful in low air loss beds
US5475937A (en) * 1994-05-25 1995-12-19 Korsen; David L. Shoe spike apparatus
US5539942A (en) * 1993-12-17 1996-07-30 Melou; Yves Continuous airflow patient support with automatic pressure adjustment
US5586346A (en) * 1994-02-15 1996-12-24 Support Systems, International Method and apparatus for supporting and for supplying therapy to a patient
US5630238A (en) * 1995-08-04 1997-05-20 Hill-Rom, Inc. Bed with a plurality of air therapy devices, having control modules and an electrical communication network
US5647079A (en) * 1996-03-20 1997-07-15 Hill-Rom, Inc. Inflatable patient support surface system
US5666681A (en) * 1995-01-03 1997-09-16 Hill-Rom, Inc. Heel pressure management apparatus and method
US5685036A (en) * 1996-02-15 1997-11-11 Geomarine Systems, Inc. Alternating pressure mattress system and method
US5715548A (en) * 1994-01-25 1998-02-10 Hill-Rom, Inc. Chair bed
US5794288A (en) * 1996-06-14 1998-08-18 Hill-Rom, Inc. Pressure control assembly for an air mattress
US5815865A (en) * 1995-11-30 1998-10-06 Sleep Options, Inc. Mattress structure
US5848450A (en) * 1996-03-05 1998-12-15 L&P Property Management Company Air bed control
US5934280A (en) * 1996-07-23 1999-08-10 Support Systems International Industries Method and a device having a tap-fed heel support region
US5983426A (en) * 1998-04-23 1999-11-16 Picker International, Inc. Versatile patient restraint system
US6008598A (en) * 1998-04-22 1999-12-28 Patmark Company, Inc. Hand-held controller for bed and mattress assembly
US6014784A (en) * 1998-10-19 2000-01-18 Taylor; Rex E. Portable system for generating variable pressure point body support
US6047424A (en) * 1995-08-04 2000-04-11 Hill-Rom, Inc. Bed having modular therapy devices
US6079065A (en) * 1998-04-22 2000-06-27 Patmark Company, Inc. Bed assembly with an air mattress and controller
US6202672B1 (en) * 1997-08-25 2001-03-20 Hill-Rom, Inc. Valve assembly
US6212718B1 (en) * 1998-03-31 2001-04-10 Hill-Rom, Inc Air-over-foam mattress
US6240584B1 (en) * 1999-01-08 2001-06-05 Hill-Rom, Inc. Mattress assembly
US20010023511A1 (en) * 1999-04-20 2001-09-27 Wilkinson John W. Inflatable cushioning device with manifold system
US6295675B1 (en) * 1997-08-25 2001-10-02 Hill-Rom Services, Inc. Mattress assembly
US20030159219A1 (en) * 2002-02-22 2003-08-28 Harrison Samuel W. Overlay mattress
US20030208847A1 (en) * 1996-11-18 2003-11-13 Kinetic Concepts, Inc. Bariatric treatment system and related methods
US6855158B2 (en) * 2001-09-11 2005-02-15 Hill-Rom Services, Inc. Thermo-regulating patient support structure
US7182311B2 (en) * 2005-03-24 2007-02-27 Robertshaw Controls Company In-line solenoid valve
US20070094806A1 (en) * 2003-12-19 2007-05-03 Giovanni Beretta Air mattress with pressure control system
US7260860B2 (en) * 2004-08-04 2007-08-28 Hill-Rom Services, Inc. Mattress system for a hospital bed

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62193459U (de) * 1986-05-28 1987-12-09
DE8901144U1 (de) * 1989-02-02 1990-05-31 Robert Bosch Gmbh, 7000 Stuttgart Elektromagnetisch betätigbares Doppelsitzventil
DE8907989U1 (de) * 1989-06-30 1989-08-10 Erwes, Ralf Peter, 4600 Dortmund Magnetventil
FR2718347B1 (fr) 1994-04-06 1996-06-28 Support Systems International Procédé et appareil de support d'un élément à supporter, en particulier le corps d'un patient permettant un support à une profondeur d'enfoncement contrôlée.
JP2000037263A (ja) * 1998-07-21 2000-02-08 Aihou:Kk エアーベッド用消音器
US20050154336A1 (en) * 1999-04-30 2005-07-14 Kloecker Richard J. Segmented pneumatic pad for regulating pressure upon parts of the body during usage
WO2001089348A2 (en) * 2000-05-19 2001-11-29 Hill Engineering Continuous wave cushioned support
JP4513583B2 (ja) * 2005-01-28 2010-07-28 横浜ゴム株式会社 空気マット及びその制御装置並びに空気マット装置

Patent Citations (53)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4768249A (en) * 1985-12-30 1988-09-06 Ssi Medical Services, Inc. Patient support structure
US4798227A (en) * 1985-12-30 1989-01-17 Ssi Medical Services, Inc. Valve for a patient support structure
US4838309A (en) * 1985-12-30 1989-06-13 Ssi Medical Services, Inc. Variable flow gas valve
US4949413A (en) * 1985-12-30 1990-08-21 Ssi Medical Services, Inc. Low air loss bed
US5051673A (en) * 1985-12-30 1991-09-24 Goodwin Vernon L Patient support structure
US4745647A (en) * 1985-12-30 1988-05-24 Ssi Medical Services, Inc. Patient support structure
US4803744A (en) * 1987-05-19 1989-02-14 Hill-Rom Company, Inc. Inflatable bed
US5272778A (en) * 1989-01-25 1993-12-28 The Mediscus Group Inc. Valve useful in low air loss beds
US5539942A (en) * 1993-12-17 1996-07-30 Melou; Yves Continuous airflow patient support with automatic pressure adjustment
US5715548A (en) * 1994-01-25 1998-02-10 Hill-Rom, Inc. Chair bed
US6163903A (en) * 1994-01-25 2000-12-26 Hill-Rom Inc. Chair bed
US5586346A (en) * 1994-02-15 1996-12-24 Support Systems, International Method and apparatus for supporting and for supplying therapy to a patient
US5983429A (en) * 1994-02-15 1999-11-16 Stacy; Richard B. Method and apparatus for supporting and for supplying therapy to a patient
US5475937A (en) * 1994-05-25 1995-12-19 Korsen; David L. Shoe spike apparatus
US6351863B1 (en) * 1995-01-03 2002-03-05 Hill-Rom Services, Inc. Heel pressure management apparatus and method
US5666681A (en) * 1995-01-03 1997-09-16 Hill-Rom, Inc. Heel pressure management apparatus and method
US6151739A (en) * 1995-01-03 2000-11-28 Hill-Rom, Inc. Heel pressure management apparatus and method
US5630238A (en) * 1995-08-04 1997-05-20 Hill-Rom, Inc. Bed with a plurality of air therapy devices, having control modules and an electrical communication network
US5781949A (en) * 1995-08-04 1998-07-21 Hill-Rom, Inc. Rotational therapy apparatus for a bed
US6047424A (en) * 1995-08-04 2000-04-11 Hill-Rom, Inc. Bed having modular therapy devices
US5815865A (en) * 1995-11-30 1998-10-06 Sleep Options, Inc. Mattress structure
US5685036A (en) * 1996-02-15 1997-11-11 Geomarine Systems, Inc. Alternating pressure mattress system and method
US5848450A (en) * 1996-03-05 1998-12-15 L&P Property Management Company Air bed control
US5647079A (en) * 1996-03-20 1997-07-15 Hill-Rom, Inc. Inflatable patient support surface system
US6178578B1 (en) * 1996-06-14 2001-01-30 Hill-Rom, Inc. Pressure control assembly for an air mattress
US5794288A (en) * 1996-06-14 1998-08-18 Hill-Rom, Inc. Pressure control assembly for an air mattress
US5934280A (en) * 1996-07-23 1999-08-10 Support Systems International Industries Method and a device having a tap-fed heel support region
US20030208847A1 (en) * 1996-11-18 2003-11-13 Kinetic Concepts, Inc. Bariatric treatment system and related methods
US6760939B2 (en) * 1997-08-25 2004-07-13 Hill-Rom Services, Inc. Mattress assembly
US7353556B2 (en) * 1997-08-25 2008-04-08 Hill-Rom Services, Inc. Mattress assembly
US6202672B1 (en) * 1997-08-25 2001-03-20 Hill-Rom, Inc. Valve assembly
US6467113B2 (en) * 1997-08-25 2002-10-22 Hill-Rom Services, Inc. Mattress assembly
US6439264B1 (en) * 1997-08-25 2002-08-27 Hill-Rom Services, Inc. Valve assembly
US6295675B1 (en) * 1997-08-25 2001-10-02 Hill-Rom Services, Inc. Mattress assembly
US6302145B1 (en) * 1997-08-25 2001-10-16 Hill-Rom Services, Inc. Valve assembly
US6212718B1 (en) * 1998-03-31 2001-04-10 Hill-Rom, Inc Air-over-foam mattress
US6311348B1 (en) * 1998-04-22 2001-11-06 Hill-Rom Services, Inc. Bed assembly with an air mattress and controller
US6079065A (en) * 1998-04-22 2000-06-27 Patmark Company, Inc. Bed assembly with an air mattress and controller
US6396224B1 (en) * 1998-04-22 2002-05-28 Hill-Rom Services, Inc. Hand-held controller for bed and mattress assembly
US6008598A (en) * 1998-04-22 1999-12-28 Patmark Company, Inc. Hand-held controller for bed and mattress assembly
US5983426A (en) * 1998-04-23 1999-11-16 Picker International, Inc. Versatile patient restraint system
US6014784A (en) * 1998-10-19 2000-01-18 Taylor; Rex E. Portable system for generating variable pressure point body support
US6240584B1 (en) * 1999-01-08 2001-06-05 Hill-Rom, Inc. Mattress assembly
US6568013B2 (en) * 1999-01-08 2003-05-27 Hill-Rom Services, Inc. Fluid mattress assembly with check valves
US6418579B2 (en) * 1999-01-08 2002-07-16 Hill-Rom Services, Inc. Check valve for mattress assembly
US20010023511A1 (en) * 1999-04-20 2001-09-27 Wilkinson John W. Inflatable cushioning device with manifold system
US6826795B2 (en) * 1999-04-20 2004-12-07 M.P.L. Limited Inflatable cushioning device with manifold system
US6855158B2 (en) * 2001-09-11 2005-02-15 Hill-Rom Services, Inc. Thermo-regulating patient support structure
US20030159219A1 (en) * 2002-02-22 2003-08-28 Harrison Samuel W. Overlay mattress
US20070094806A1 (en) * 2003-12-19 2007-05-03 Giovanni Beretta Air mattress with pressure control system
US7260860B2 (en) * 2004-08-04 2007-08-28 Hill-Rom Services, Inc. Mattress system for a hospital bed
US7565710B2 (en) * 2004-08-04 2009-07-28 Hill-Rom Services, Inc. Support surface with inflatable width adjustment portion
US7182311B2 (en) * 2005-03-24 2007-02-27 Robertshaw Controls Company In-line solenoid valve

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8789224B2 (en) 2000-11-07 2014-07-29 Tempur-Pedic Managemant, LLC Therapeutic mattress assembly
US7685662B2 (en) * 2007-05-25 2010-03-30 Hill-Rom Industries Sa Pneumatic control valve and power reserve for a mattress
US20080289114A1 (en) * 2007-05-25 2008-11-27 Jean-Louis Viard Pneumatic control valve and power reserve for a mattress
GB2472819A (en) * 2009-08-19 2011-02-23 Mjs Healthcare Ltd A support with a layer of inflatable cells wherein different groups of cells can simultaneously be inflated or deflated
GB2472818A (en) * 2009-08-19 2011-02-23 Mjs Healthcare Ltd A support with inflatable cells wherein the cells at one end have a smaller diameter
US8756732B2 (en) 2010-02-12 2014-06-24 Hill-Rom Services, Inc. Method and apparatus for relieving shear induced by an occupant support
US20110197366A1 (en) * 2010-02-12 2011-08-18 Lachenbruch Charles A Method and Apparatus for Relieving Shear Induced by and Occupant Support
US8365330B2 (en) 2010-02-12 2013-02-05 Hill-Rom Services, Inc. Method and apparatus for relieving shear induced by and occupant support
US20140173825A1 (en) * 2011-06-16 2014-06-26 Picard Healthcare Technology (Dongguan) Co. Ltd. Medical air mattress, method to inflate/deflate a medical air mattress and method to incline the bearing surface of a medical air mattress
US9566202B2 (en) * 2011-06-16 2017-02-14 Picard Healthcare Technology (Dongguan Co. Ltd.) Medical air mattress, method to inflate/deflate a medical air mattress and method to incline the bearing surface of a medical air mattress
US9849052B2 (en) * 2011-08-16 2017-12-26 Invacare Uk Operations Limited Pressure relieving mattress
US20140317855A1 (en) * 2011-08-16 2014-10-30 Leyton Stevens Pressure relieving mattress
US8683633B2 (en) 2011-08-21 2014-04-01 Zheng CAO Mattress with concealed massage units
GB2495521A (en) * 2011-10-12 2013-04-17 Almec Eas Ltd Device for inflating an air chamber in a seat or bed
WO2015124897A3 (en) * 2014-02-20 2015-10-29 Huntleigh Technology Limited Improvements in and relating to cell inflation of a mattress
US11291599B2 (en) 2014-02-20 2022-04-05 Huntleigh Technology Limited Cell inflation of a mattress
US10335335B2 (en) * 2014-07-15 2019-07-02 Paramount Bed Co., Ltd. Air mattress for gatch bed
US10646391B2 (en) 2014-07-15 2020-05-12 Paramount Bed Co., Ltd. Air mattress for gatch bed
CN106806077A (zh) * 2017-03-21 2017-06-09 河北工业大学 一种自动翻身气囊护理床垫
CN107582285A (zh) * 2017-09-19 2018-01-16 厦门宁欣科技有限公司 一种充气互换位气流床垫
US11510838B2 (en) * 2018-03-06 2022-11-29 Dallas LA PORTA Methods, apparatuses and systems for applying pressure to a newborn baby
CN111166574A (zh) * 2020-01-02 2020-05-19 温州医科大学 一种气垫可调节防褥疮医疗床结构
US20210227991A1 (en) * 2020-01-24 2021-07-29 Patientech Llc Controllable beds
US11344461B2 (en) * 2020-07-17 2022-05-31 Toyota Motor Engineering & Manufacturing North America, Inc. Support cushion liners comprising artificial muscles

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US20150074914A1 (en) 2015-03-19
AU2008200769A1 (en) 2008-09-11
FR2912884B1 (fr) 2012-09-28
JP2008237892A (ja) 2008-10-09
FR2912884A1 (fr) 2008-08-29
EP1964494A1 (de) 2008-09-03
JP5179220B2 (ja) 2013-04-10

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