EP3448343A1 - Mattress system and connector - Google Patents

Mattress system and connector

Info

Publication number
EP3448343A1
EP3448343A1 EP17719703.5A EP17719703A EP3448343A1 EP 3448343 A1 EP3448343 A1 EP 3448343A1 EP 17719703 A EP17719703 A EP 17719703A EP 3448343 A1 EP3448343 A1 EP 3448343A1
Authority
EP
European Patent Office
Prior art keywords
connector
interconnected chambers
mattress system
mode
air
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP17719703.5A
Other languages
German (de)
French (fr)
Other versions
EP3448343B1 (en
Inventor
John Lewis
Grahame JONES
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Direct Healthcare Group Ltd
Original Assignee
Direct Healthcare Services Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Direct Healthcare Services Ltd filed Critical Direct Healthcare Services Ltd
Publication of EP3448343A1 publication Critical patent/EP3448343A1/en
Application granted granted Critical
Publication of EP3448343B1 publication Critical patent/EP3448343B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • A47C27/10—Fluid mattresses or cushions with two or more independently-fillable chambers

Definitions

  • the present invention concerns mattresses and mattress systems. More particularly, but not
  • this invention concerns a mattress system for the reduction of pressure sores.
  • the invention also concerns a mattress system and connector arrangement.
  • an active mattress system may be provided, where an air pump is used to cyclically vary the pressure inside numerous air chambers which make up a mattress.
  • an air pump is used to cyclically vary the pressure inside numerous air chambers which make up a mattress.
  • a closed mattress system may be provided, where air may circulate between various air chambers of a mattress as a result of patient movement on the mattress, thereby changing the air pressure within those chambers without requiring an external pump.
  • the risk factors for a bed user change over time, it may be necessary to move them to a different bed or mattress system.
  • the present invention seeks to mitigate the above- mentioned problems. Alternatively or additionally, the present invention seeks to provide an improved mattress system for use in the prevention of pressure sores.
  • the invention provides a mattress system comprising a mattress, the mattress comprising a first set of interconnected chambers and a second set of interconnected chambers,
  • the connector being configurable between:
  • the connector may comprise a first pump connector associated with the first airflow path.
  • the connector may comprise a second pump connector associated with the second airflow path.
  • the first pump connector and second pump connector may each be configured for attachment to separate air pump outlets.
  • the mattress system may comprise an air pump.
  • the connector when configured in the first mode, may allow an air pump to individually control the air pressure within the first set of
  • the configuration may allow the air pressure within the first set of interconnected chambers to be increased to a higher level than the air pressure within the second set of interconnected
  • the mattress system may comprise two independently controlled sections, each section comprising one of the first set of interconnected chambers, the mattress system may comprise two independently controlled sections, each section comprising one of the first set of interconnected chambers, the mattress system may comprise two independently controlled sections, each section comprising one of the first set of interconnected chambers, the mattress system may comprise two independently controlled sections, each section comprising one of the first set of interconnected chambers, the mattress system may comprise two independently controlled sections, each section comprising one of the first set of interconnected
  • Such mattress systems may be operated such that the pressure in the first set of interconnected chambers and second set of interconnected chambers is cyclically varied.
  • Such mattress systems may be used in hospital and care environments in order to reduce the occurrence of pressure sores.
  • the connector when configured in the second mode, links the first set of interconnected chambers and second set of interconnected chambers. Pressure applied to one or more of the first set of interconnected chambers may result in air moving from the first set of interconnected chambers to the second set of interconnected chambers, and vice versa.
  • the connector when configured in the second mode, may be arranged such that the first air flow path and second air flow path are closed off.
  • the mattress system may comprise an overpressure valve.
  • the overpressure valve may be arranged to allow air to exit the mattress system should the air pressure within the mattress system exceed a certain level.
  • the overpressure valve may be part of the connector.
  • the connector may be arranged such that when the connector is configured in the first mode, the overpressure valve is closed off.
  • the connector may be arranged such that when the connector is configured in the second mode, the overpressure valve is open to airflow from the first set of interconnected chambers and second set of
  • the connector may be arranged to be configured in the first mode when the connector is attached to an air pump.
  • the connector may comprise a latch or similar retaining mechanism to help prevent accidental detachment from the air pump.
  • the connector may be arranged to be configured in the second mode when the connector is not attached to an air pump.
  • the connector may be arranged such that connection to an air pump automatically configures the connector in the first mode.
  • the connector may be arranged such that disconnection from an air pump
  • the first air flow path and second air flow path may be associated with biased stop valves. Connection of the connector to an air pump may displace the stop valves such that the first air flow path and second air flow path are opened. The displacement of the stop valves may be effected by contact with the air pump outlets. When the connector is disconnected from an air pump, the biased stop valves may move into a position blocking the first air flow path and second air flow path.
  • the biased stop valves may be biased by a spring arrangement or any other suitable biasing arrangement. Such an arrangement may provide a connector which, when disconnected from an air pump, automatically moves into the second mode, therefore preventing an undesirable amount of air from escaping from the mattress system.
  • the connector may comprise one or more turn valves associated with the first air flow path and second air flow path.
  • the first air flow path and second air flow path may be opened by turning the turn valves into a first configuration, and closed by turning the turn valves into a second
  • One or more of the first set of interconnected chambers and second set of interconnected chambers may comprise an air inlet valve open to the atmosphere.
  • the air inlet valve may be arranged to allow air to enter the chambers in the event of the air pressure within the relevant chamber reducing below a certain level. This may help prevent gradual air loss, and thus pressure loss, in the mattress system over time, particularly when the connector is in the second mode.
  • interconnected chambers and second set of interconnected chambers may comprise an air retaining material.
  • the air retaining material may be a foam. Where more than one of the interconnected chambers comprises an air retaining material, the cross sectional profile of the air retaining material may be the same in each of the
  • retaining material may have a different cross sectional profile in different chambers. Varying the cross
  • sectional profile of the air retaining material may vary the load bearing characteristics of the chamber. This may allow different chambers to support loads with different internal pressures within the chambers. Such an arrangement may be advantageous when seeking to reduce the occurrence of pressure sores.
  • interconnected chambers and second set of interconnected chambers may be substantially free of any air retaining material .
  • the relative size of one or more of the first set of interconnected chambers and second set of interconnected chambers may vary in dependence on the intended location of the interconnected chambers with respect to the body of a patient lying on the mattress.
  • a connector for use with a mattress comprising a first set of interconnected chambers and a second set of interconnected chambers,
  • the connector arranged to be joined to the first set of interconnected chambers and second set of
  • the connector being configurable between:
  • Figure 1 shows a schematic view of a mattress system according to a first embodiment of the invention
  • Figure 2 shows a schematic view of a connector in a first mode according to a first embodiment of the
  • Figure 3 shows a schematic view of a connector in a second mode according to a first embodiment of the invention
  • Figure 4 shows a sectional view of a connector in a first mode according to a second embodiment of the invention
  • Figure 5 shows a sectional view of a connector in a second mode according to a second embodiment of the invention
  • Figure 6 shows a sectional view of a connector in a second mode according to a second embodiment of the invention
  • Figure 7 shows a sectional view of a connector in a first mode according to a second embodiment of the invention
  • Figure 8 shows an exploded view of a connector according to a second embodiment of the invention.
  • Figure 9 shows a connector in a first mode according to a third embodiment of the invention.
  • Figure 10 shows a connector in a second mode
  • FIG. 1 shows a mattress system 10 according to a first embodiment of the invention.
  • Mattress system 10 comprises a mattress 12, made up of a first set of interconnected chambers 14 and a second set of
  • the first set of interconnected chambers 14 is the first set of interconnected chambers 14
  • Conduit 22 permits fluid communication between the chambers 18.
  • the second set of interconnected chambers 16 comprises a plurality of chambers 20 connected by a conduit 24.
  • Conduit 24 permits fluid communication between the chambers 20.
  • Each of the chambers 18, 20 are formed from a deformable plastic material and house a resilient air retaining material consisting of foam.
  • Each of the conduits 22, 24 comprise flexible pipe sections. Pipe joints are provided at the points at which the conduits 22, 24 branch and/or connect to one of the chambers 18, 20.
  • the first set of interconnected chambers 14 and second set of interconnected chambers 16 are each connected to a connector 26 by the conduit 22 and the conduit 24 respectively.
  • Connector 26 comprises a first pump connector and a second pump connector.
  • connectors are connectable to first and second outlets 28, 30 respectively of pump 32.
  • Connector 26 is configurable between a first mode and a second mode.
  • the first mode and the second mode are shown schematically in Figures 2 and 3 respectively.
  • the connector 26 defines a first airflow path 34 and a second airflow path 36.
  • the first airflow path 34 allows fluid communication between the first pump connector and the first set of interconnected chambers 14.
  • the second airflow path allows fluid
  • the pump 32 When the connector 26 is in the first mode, and the first and second pump connectors are connected to the first and second outlets 28, 30 respectively of the pump 32, the pump 32 may be operated to individually control the air pressure within the first set of interconnected chambers 14 and second set of interconnected chambers 16. For example, the pump may be operated to cyclically inflate and deflate the first set and second set of interconnected chambers 14, 16. This may be done by the pump 32 cyclically pumping air into and out of the first and second set of interconnected chambers 14, 16 via the first and second airflow paths 34, 36 respectively.
  • the first set of interconnected chambers 14 and second set of interconnected chambers 16 are alternately inflated and deflated.
  • the connector 26 defines a third airflow path 38.
  • the third airflow path 38 allows fluid communication between the first set of interconnected chambers 14 and the second set of interconnected chambers 16.
  • pressure differences between the first set of interconnected chambers 14 and second set of interconnected chambers 16 may result in airflow between the first and second set of interconnected chambers 14, 16 via the third airflow path 38. This may happen, for example, due to movement of a user situated on the mattress.
  • a connector 126 according to a second embodiment of the invention will now be described with reference to Figures 4 and 5.
  • Connector 126 comprises a housing 127 defining a first barrel 144 and a second barrel 146.
  • the first barrel 144 and second barrel 146 are substantially side by side and also parallel to each other.
  • the barrels 144, 146 are substantially cylindrical in shape and each extend from a first end 140, 142 at a first side of the housing 127 to a second end 141, 143 at a second side of the housing 127.
  • the barrels 144, 146 are pump connectors and are each arranged to connect to an output from a pump.
  • the barrels 144, 146 are each arranged to connect to a set of interconnected chambers.
  • the barrels 144, 146 each house a stop valve 148, 150 which is slidable through its barrel 144, 146.
  • the stop valves 148, 150 are cartridge shaped elements which fit closely inside their barrels 144, 146.
  • the stop valves 148, 150 each comprise a side opening 152, 154 in one side.
  • the stop valves 148, 150 are each slidable between two positions: a first position corresponding to the first mode, and a second position corresponding to the second mode. In the first position, the side openings 152, 154 are each aligned with a recess 156, 158 in the inner wall of the respective barrels 144, 146.
  • the recesses 156, 158 each extend along the barrels 144, 146 and, in one direction, beyond the stop valves 148, 150. In this first position, the openings 152, 154 and the recesses 156, 158 each provide a first and second airflow path 134, 136 respectively between the first ends 140, 142 and the second ends 141, 143 of the respective barrels 144, 146.
  • the side openings 152, 154 are not aligned with the recesses 156, 158 and the stop valves 148, 150 and barrels 144, 146 are so dimensioned that airflow between the first ends 140, 142 and the second ends 141, 143 is prevented. Seals may be provided to prevent air leaking between the stop valves 148, 150 and the inner walls of the barrels 144, 146.
  • a passageway 160 is provided between the first barrel 144 and the second barrel 146. In the first position the ends of the passageway 160 are blocked by the stop valves 148, 150. Passageway 160 is therefore unable to provide an airflow path between the barrels
  • Passageway 160 is additionally in fluid
  • Overpressure valve 166 is configured to allow air to exit the mattress system should the air pressure within the mattress system exceed a certain level. Formations proximate each of the first ends 140, 142 and the second ends 141, 143 of each barrel restrict the distance over which the stop valves 148, 150 can travel through the barrels 144, 146 and prevent the stop valves 148, 150 from falling out the barrels 144, 146.
  • Helical springs 162, 164 are provided in each of the barrels 144, 146.
  • the helical springs 162, 164 are arranged to bias their respective stop valves 148, 150 to the second position.
  • the connector 126 is therefore biased to the second mode. This may be advantageous because the connector 126 will be bias towards a
  • the connector 126 can be changed from the second mode to the first mode by pushing the stop valves 148, 150 against the spring and along the barrels 144, 146 towards the first position. According to the second embodiment of the invention, this is preferably done using a pump outlet when the pump outlet is connected to the connector 126. Preferably the pump outlet is
  • the first ends 140, 142 of the barrels 144, 146 define a female formation and the pump outlet defines a male formation.
  • the outlet of the pump need not necessarily be integrated within the pump itself, but it may for example refer to the end of a conduit, pipe, and/or other such connector in fluid communication with the pump itself.
  • Figures 6 and 7 show simplified schematics of a barrel 244 and stop valve 248 of a connector 226 similar to that of the second embodiment.
  • a pump outlet 274 is shown being inserted into the barrel 244 and pushing the stop valve 248 from the second position ( Figure 6) to the first position ( Figure 7) .
  • connector 126 can be formed in two interconnecting parts 127a and 127b; the stop valves 148, 150 being slidably retained between the those two parts.
  • the latch mechanism 168 may be provided to retain, in use, a pump outlet which has been inserted into the connector 126.
  • the latch mechanism comprises a release flap 170 having a formation 172 for engaging with a corresponding formation on the pump outlet when the pump outlet is connected to the connector 126. To remove the pump outlet from the connector 126, the flap may be pulled to disengage the formation 172 from the corresponding formation.
  • Figures 9 and 10 show a third embodiment of a connector 326.
  • the connector 326 comprises two
  • the barrels 344, 346 are each interrupted by a cylindrical drum 376 which extends substantially
  • a rotatable cylinder 378 is provided within the cylindrical drum 376.
  • the rotatable cylinder 378 has two semi-circular cut-outs 380 and 382. The rotatable
  • cylinder 387 may be positioned in a first position, in which the connector 326 is in the first mode, wherein the cut outs 380, 382 are each aligned with one of the barrels 344, 346. In this first position the barrels 344, 346 and the cut-outs 380, 382 define a first airflow channel 334 and a second airflow channel 336 through the connector 326. Should a pump outlet be connected to one side of each barrel 344, 346 and a set of interconnecting cells was connected to the other side of each barrel 344, 346, then connector 387 puts each of the pump outlets in fluid communication with a set of interconnecting cells.
  • An outwardly extending recess 384 is provided in the cylindrical drum 376.
  • the rotatable cylinder 387 may be positioned in a second position, in which the connector 326 is in the second mode, wherein the cut-outs 380, 382 place one side of each barrel 344, 346 in fluid
  • An overpressure valve 366 is provided on the recess 384 to allow air to exit the mattress system, via the third airflow channel, should the air pressure within the mattress system exceed a certain level.

Abstract

A mattress system comprising a mattress, the mattress comprising a first set of interconnected chambers and a second set of interconnected chambers. The first set of interconnected chambers and second set of interconnected chambers are joined to a connector. The connector is configurable between a first mode in which the connector defines a first airflow path into the first set of interconnected chambers and a second airflow path into the second set of interconnected chambers, and there is no airflow path between the first set of interconnected chambers and second set of interconnected chambers, a second mode in which the connector defines a third airflow path between the first set of interconnected chambers and second set of interconnected chambers.

Description

Mattress System and Connector
Field of the Invention The present invention concerns mattresses and mattress systems. More particularly, but not
exclusively, this invention concerns a mattress system for the reduction of pressure sores. The invention also concerns a mattress system and connector arrangement.
Background of the Invention
Various mattresses and mattress systems exist which attempt to reduce the occurrence of pressure sores in long term users, such as hospital and care patients.
Pressure sores can develop when a bed user lies in the same position for an extended period of time. Various systems exist depending on the level of risk of
developing pressure sores for a bed user. For example, in a high-risk scenario, an active mattress system may be provided, where an air pump is used to cyclically vary the pressure inside numerous air chambers which make up a mattress. As the cost of providing all bed users in a care or hospital environment with a mattress system including a pump is prohibitive, and unnecessary in many cases, it may be necessary to change the mattress system on a bed depending on the risk factors for any particular bed user. Such a process may be time consuming for a nurse or carer and take their attention from other important duties. Even if all of the mattresses in a ward (for example) are able to be joined with a pump to provide an active system, then the step of joining a pump to the mattress may take an undesirable amount of time. Also, disconnection of a pump from a mattress may result in all of the air escaping from the mattress system, thereby significantly reducing the comfort of the
mattress and increasing the likelihood of pressure sores being caused. In lower risk scenarios, a closed mattress system may be provided, where air may circulate between various air chambers of a mattress as a result of patient movement on the mattress, thereby changing the air pressure within those chambers without requiring an external pump. However, if the risk factors for a bed user change over time, it may be necessary to move them to a different bed or mattress system.
The present invention seeks to mitigate the above- mentioned problems. Alternatively or additionally, the present invention seeks to provide an improved mattress system for use in the prevention of pressure sores.
Summary of the Invention
According to a first aspect, the invention provides a mattress system comprising a mattress, the mattress comprising a first set of interconnected chambers and a second set of interconnected chambers,
the first set of interconnected chambers and second set of interconnected chambers being joined to a
connector,
the connector being configurable between:
a first mode in which the connector defines a first airflow path into the first set of interconnected
chambers and a second airflow path into the second set of interconnected chambers, and there is no airflow path between the first set of interconnected chambers and second set of interconnected chambers, a second mode in which the connector defines a third airflow path between the first set of interconnected chambers and second set of interconnected chambers.
The connector may comprise a first pump connector associated with the first airflow path. The connector may comprise a second pump connector associated with the second airflow path. The first pump connector and second pump connector may each be configured for attachment to separate air pump outlets. The mattress system may comprise an air pump. The connector, when configured in the first mode, may allow an air pump to individually control the air pressure within the first set of
interconnected chambers and second set of interconnected chambers. For example, the configuration may allow the air pressure within the first set of interconnected chambers to be increased to a higher level than the air pressure within the second set of interconnected
chambers, or vice versa. Therefore, as in the first configuration, there is no airflow between the first set of interconnected chambers and second set of
interconnected chambers, the mattress system may comprise two independently controlled sections, each section comprising one of the first set of interconnected
chambers and second set of interconnected chambers. Such mattress systems may be operated such that the pressure in the first set of interconnected chambers and second set of interconnected chambers is cyclically varied.
Such mattress systems may be used in hospital and care environments in order to reduce the occurrence of pressure sores.
The connector, when configured in the second mode, links the first set of interconnected chambers and second set of interconnected chambers. Pressure applied to one or more of the first set of interconnected chambers may result in air moving from the first set of interconnected chambers to the second set of interconnected chambers, and vice versa. The connector, when configured in the second mode, may be arranged such that the first air flow path and second air flow path are closed off.
The mattress system may comprise an overpressure valve. The overpressure valve may be arranged to allow air to exit the mattress system should the air pressure within the mattress system exceed a certain level. The overpressure valve may be part of the connector. The connector may be arranged such that when the connector is configured in the first mode, the overpressure valve is closed off. The connector may be arranged such that when the connector is configured in the second mode, the overpressure valve is open to airflow from the first set of interconnected chambers and second set of
interconnected chambers .
The connector may be arranged to be configured in the first mode when the connector is attached to an air pump. The connector may comprise a latch or similar retaining mechanism to help prevent accidental detachment from the air pump.
The connector may be arranged to be configured in the second mode when the connector is not attached to an air pump. The connector may be arranged such that connection to an air pump automatically configures the connector in the first mode. The connector may be arranged such that disconnection from an air pump
automatically configures the connector in the second mode. The first air flow path and second air flow path may be associated with biased stop valves. Connection of the connector to an air pump may displace the stop valves such that the first air flow path and second air flow path are opened. The displacement of the stop valves may be effected by contact with the air pump outlets. When the connector is disconnected from an air pump, the biased stop valves may move into a position blocking the first air flow path and second air flow path. The biased stop valves may be biased by a spring arrangement or any other suitable biasing arrangement. Such an arrangement may provide a connector which, when disconnected from an air pump, automatically moves into the second mode, therefore preventing an undesirable amount of air from escaping from the mattress system.
In an alternative embodiment, the connector may comprise one or more turn valves associated with the first air flow path and second air flow path. The first air flow path and second air flow path may be opened by turning the turn valves into a first configuration, and closed by turning the turn valves into a second
configuration. However, in such an embodiment, an operator will have to perform an additional step in comparison to the automatic arrangement.
One or more of the first set of interconnected chambers and second set of interconnected chambers may comprise an air inlet valve open to the atmosphere. The air inlet valve may be arranged to allow air to enter the chambers in the event of the air pressure within the relevant chamber reducing below a certain level. This may help prevent gradual air loss, and thus pressure loss, in the mattress system over time, particularly when the connector is in the second mode.
One or more chambers of the first set of
interconnected chambers and second set of interconnected chambers may comprise an air retaining material. The air retaining material may be a foam. Where more than one of the interconnected chambers comprises an air retaining material, the cross sectional profile of the air retaining material may be the same in each of the
interconnected chambers. Alternatively, the air
retaining material may have a different cross sectional profile in different chambers. Varying the cross
sectional profile of the air retaining material may vary the load bearing characteristics of the chamber. This may allow different chambers to support loads with different internal pressures within the chambers. Such an arrangement may be advantageous when seeking to reduce the occurrence of pressure sores.
One or more chambers of the first set of
interconnected chambers and second set of interconnected chambers may be substantially free of any air retaining material .
The relative size of one or more of the first set of interconnected chambers and second set of interconnected chambers may vary in dependence on the intended location of the interconnected chambers with respect to the body of a patient lying on the mattress.
According to a second aspect of the invention there is also provided a connector for use with a mattress comprising a first set of interconnected chambers and a second set of interconnected chambers,
the connector arranged to be joined to the first set of interconnected chambers and second set of
interconnected chambers,
the connector being configurable between:
a first mode in which the connector defines a first airflow path into the first set of interconnected
chambers and a second airflow path into the second set of interconnected chambers, and there is no airflow path between the first set of interconnected chambers and second set of interconnected chambers, a second mode in which the connector defines a third airflow path between the first set of interconnected chambers and second set of interconnected chambers.
It will of course be appreciated that features described in relation to one aspect of the present invention may be incorporated into other aspects of the present invention. For example, the method of the invention may incorporate any of the features described with reference to the apparatus of the invention and vice versa.
Description of the Drawings
Embodiments of the present invention will now be described by way of example only with reference to the accompanying schematic drawings of which:
Figure 1 shows a schematic view of a mattress system according to a first embodiment of the invention;
Figure 2 shows a schematic view of a connector in a first mode according to a first embodiment of the
invention;
Figure 3 shows a schematic view of a connector in a second mode according to a first embodiment of the invention;
Figure 4 shows a sectional view of a connector in a first mode according to a second embodiment of the invention;
Figure 5 shows a sectional view of a connector in a second mode according to a second embodiment of the invention;
Figure 6 shows a sectional view of a connector in a second mode according to a second embodiment of the invention; Figure 7 shows a sectional view of a connector in a first mode according to a second embodiment of the invention;
Figure 8 shows an exploded view of a connector according to a second embodiment of the invention;
Figure 9 shows a connector in a first mode according to a third embodiment of the invention; and
Figure 10 shows a connector in a second mode
according to a third embodiment of the invention.
Detailed Description
Figure 1 shows a mattress system 10 according to a first embodiment of the invention. Mattress system 10 comprises a mattress 12, made up of a first set of interconnected chambers 14 and a second set of
interconnected chambers 16.
The first set of interconnected chambers 14
comprises a plurality of chambers 18 connected by a conduit 22. Conduit 22 permits fluid communication between the chambers 18. Similarly, the second set of interconnected chambers 16 comprises a plurality of chambers 20 connected by a conduit 24. Conduit 24 permits fluid communication between the chambers 20.
Each of the chambers 18, 20 are formed from a deformable plastic material and house a resilient air retaining material consisting of foam. Each of the conduits 22, 24 comprise flexible pipe sections. Pipe joints are provided at the points at which the conduits 22, 24 branch and/or connect to one of the chambers 18, 20.
The first set of interconnected chambers 14 and second set of interconnected chambers 16 are each connected to a connector 26 by the conduit 22 and the conduit 24 respectively.
Connector 26 comprises a first pump connector and a second pump connector. The first and second pump
connectors are connectable to first and second outlets 28, 30 respectively of pump 32.
Connector 26 is configurable between a first mode and a second mode. The first mode and the second mode are shown schematically in Figures 2 and 3 respectively.
In the first mode the connector 26 defines a first airflow path 34 and a second airflow path 36. The first airflow path 34 allows fluid communication between the first pump connector and the first set of interconnected chambers 14. The second airflow path allows fluid
communication between the second pump connector and the second set of interconnected chambers 16.
When the connector 26 is in the first mode, and the first and second pump connectors are connected to the first and second outlets 28, 30 respectively of the pump 32, the pump 32 may be operated to individually control the air pressure within the first set of interconnected chambers 14 and second set of interconnected chambers 16. For example, the pump may be operated to cyclically inflate and deflate the first set and second set of interconnected chambers 14, 16. This may be done by the pump 32 cyclically pumping air into and out of the first and second set of interconnected chambers 14, 16 via the first and second airflow paths 34, 36 respectively.
Preferably, the first set of interconnected chambers 14 and second set of interconnected chambers 16 are alternately inflated and deflated. Although those skilled in the art will understand that various programmes of inflation and deflation are possible. In the second mode the connector 26 defines a third airflow path 38. The third airflow path 38 allows fluid communication between the first set of interconnected chambers 14 and the second set of interconnected chambers 16.
When the connector is in the second mode, pressure differences between the first set of interconnected chambers 14 and second set of interconnected chambers 16 may result in airflow between the first and second set of interconnected chambers 14, 16 via the third airflow path 38. This may happen, for example, due to movement of a user situated on the mattress.
A connector 126 according to a second embodiment of the invention will now be described with reference to Figures 4 and 5.
Connector 126 comprises a housing 127 defining a first barrel 144 and a second barrel 146. The first barrel 144 and second barrel 146 are substantially side by side and also parallel to each other. The barrels 144, 146 are substantially cylindrical in shape and each extend from a first end 140, 142 at a first side of the housing 127 to a second end 141, 143 at a second side of the housing 127. At the first end 141, 143 the barrels 144, 146 are pump connectors and are each arranged to connect to an output from a pump. At the second end 141, 143 the barrels 144, 146 are each arranged to connect to a set of interconnected chambers.
The barrels 144, 146 each house a stop valve 148, 150 which is slidable through its barrel 144, 146. The stop valves 148, 150 are cartridge shaped elements which fit closely inside their barrels 144, 146. The stop valves 148, 150 each comprise a side opening 152, 154 in one side. The stop valves 148, 150 are each slidable between two positions: a first position corresponding to the first mode, and a second position corresponding to the second mode. In the first position, the side openings 152, 154 are each aligned with a recess 156, 158 in the inner wall of the respective barrels 144, 146. The recesses 156, 158 each extend along the barrels 144, 146 and, in one direction, beyond the stop valves 148, 150. In this first position, the openings 152, 154 and the recesses 156, 158 each provide a first and second airflow path 134, 136 respectively between the first ends 140, 142 and the second ends 141, 143 of the respective barrels 144, 146.
In the second position the side openings 152, 154 are not aligned with the recesses 156, 158 and the stop valves 148, 150 and barrels 144, 146 are so dimensioned that airflow between the first ends 140, 142 and the second ends 141, 143 is prevented. Seals may be provided to prevent air leaking between the stop valves 148, 150 and the inner walls of the barrels 144, 146.
A passageway 160 is provided between the first barrel 144 and the second barrel 146. In the first position the ends of the passageway 160 are blocked by the stop valves 148, 150. Passageway 160 is therefore unable to provide an airflow path between the barrels
144, 146. However in the second position the ends of the passageway 160 are uncovered and the passageway 160 provides a third airflow path 138 between the second ends 141, 143 of each barrel 144, 146.
Passageway 160 is additionally in fluid
communication with overpressure valve 166. Overpressure valve 166 is configured to allow air to exit the mattress system should the air pressure within the mattress system exceed a certain level. Formations proximate each of the first ends 140, 142 and the second ends 141, 143 of each barrel restrict the distance over which the stop valves 148, 150 can travel through the barrels 144, 146 and prevent the stop valves 148, 150 from falling out the barrels 144, 146.
Helical springs 162, 164 are provided in each of the barrels 144, 146. The helical springs 162, 164 are arranged to bias their respective stop valves 148, 150 to the second position. The connector 126 is therefore biased to the second mode. This may be advantageous because the connector 126 will be bias towards a
configuration in which air is retained within the
mattress system.
The connector 126 can be changed from the second mode to the first mode by pushing the stop valves 148, 150 against the spring and along the barrels 144, 146 towards the first position. According to the second embodiment of the invention, this is preferably done using a pump outlet when the pump outlet is connected to the connector 126. Preferably the pump outlet is
specifically adapted to be received by the connector 126. In the second embodiment, it is envisaged that the first ends 140, 142 of the barrels 144, 146 define a female formation and the pump outlet defines a male formation. The skilled person will appreciate that the outlet of the pump need not necessarily be integrated within the pump itself, but it may for example refer to the end of a conduit, pipe, and/or other such connector in fluid communication with the pump itself.
Figures 6 and 7 show simplified schematics of a barrel 244 and stop valve 248 of a connector 226 similar to that of the second embodiment. A pump outlet 274 is shown being inserted into the barrel 244 and pushing the stop valve 248 from the second position (Figure 6) to the first position (Figure 7) .
As shown in Figure 8, the housing 127 of the
connector 126 can be formed in two interconnecting parts 127a and 127b; the stop valves 148, 150 being slidably retained between the those two parts.
A retaining mechanism in the form of a latch
mechanism 168 may be provided to retain, in use, a pump outlet which has been inserted into the connector 126. According to the second embodiment, the latch mechanism comprises a release flap 170 having a formation 172 for engaging with a corresponding formation on the pump outlet when the pump outlet is connected to the connector 126. To remove the pump outlet from the connector 126, the flap may be pulled to disengage the formation 172 from the corresponding formation.
Figures 9 and 10 show a third embodiment of a connector 326. The connector 326 comprises two
substantially parallel and side by side barrels 344 and 346. The barrels 344, 346 are each interrupted by a cylindrical drum 376 which extends substantially
perpendicularly to the two barrels 344, 346 and connects the interior space of the two barrels 344, 346.
A rotatable cylinder 378 is provided within the cylindrical drum 376. The rotatable cylinder 378 has two semi-circular cut-outs 380 and 382. The rotatable
cylinder 387 may be positioned in a first position, in which the connector 326 is in the first mode, wherein the cut outs 380, 382 are each aligned with one of the barrels 344, 346. In this first position the barrels 344, 346 and the cut-outs 380, 382 define a first airflow channel 334 and a second airflow channel 336 through the connector 326. Should a pump outlet be connected to one side of each barrel 344, 346 and a set of interconnecting cells was connected to the other side of each barrel 344, 346, then connector 387 puts each of the pump outlets in fluid communication with a set of interconnecting cells.
An outwardly extending recess 384 is provided in the cylindrical drum 376. The rotatable cylinder 387 may be positioned in a second position, in which the connector 326 is in the second mode, wherein the cut-outs 380, 382 place one side of each barrel 344, 346 in fluid
communication with the recess 384. In this second
position the cut-outs 380, 382 and the recess 384 define a third airflow channel 338 through the connector 326. Should a set of interconnecting cells be connected to one side of each barrel 344, 346, then connector 387 puts each of the sets of interconnecting cells in fluid communication with each other.
An overpressure valve 366 is provided on the recess 384 to allow air to exit the mattress system, via the third airflow channel, should the air pressure within the mattress system exceed a certain level.
Whilst the present invention has been described and illustrated with reference to particular embodiments, it will be appreciated by those of ordinary skill in the art that the invention lends itself to many different
variations not specifically illustrated herein.
Where in the foregoing description, integers or elements are mentioned which have known, obvious or foreseeable equivalents, then such equivalents are herein incorporated as if individually set forth. Reference should be made to the claims for determining the true scope of the present invention, which should be construed so as to encompass any such equivalents. It will also be appreciated by the reader that integers or features of the invention that are described as preferable,
advantageous, convenient or the like are optional and do not limit the scope of the independent claims. Moreover, it is to be understood that such optional integers or features, whilst of possible benefit in some embodiments of the invention, may not be desirable, and may therefore be absent, in other embodiments.

Claims

Claims
1. A mattress system comprising a mattress, the
mattress comprising a first set of interconnected
chambers and a second set of interconnected chambers, the first set of interconnected chambers and second set of interconnected chambers being joined to a
connector,
the connector being configurable between:
a first mode in which the connector defines a first airflow path into the first set of interconnected
chambers and a second airflow path into the second set of interconnected chambers, and there is no airflow path between the first set of interconnected chambers and second set of interconnected chambers,
a second mode in which the connector defines a third airflow path between the first set of interconnected chambers and second set of interconnected chambers
2. A mattress system according to claim 1, wherein the connector may comprise a first pump connector associated with the first airflow path and a second pump connector associated with the second airflow path, the first pump connector and second pump connector each being configured for attachment to separate air pump outlets.
3. A mattress system according to claim 1 or claim 2, wherein the mattress system comprises an air pump.
4. A mattress system according to claim 3, wherein the connector when configured in the first mode, allows the air pump to individually control the air pressure within the first set of interconnected chambers and second set of interconnected chambers.
5. A mattress system according to any preceding claim, wherein the connector, when configured in the second mode, links the first set of interconnected chambers and second set of interconnected chambers.
6. A mattress system according to any preceding claim, wherein the connector, when configured in the second mode, closes off the first air flow path and second air flow path.
7. A mattress system according to any preceding claim, wherein the connector comprises an overpressure valve arranged to allow air to exit the mattress system should the air pressure within the mattress system exceed a predefined level.
8. A mattress system according to claim 7, wherein the connector is arranged such that when the connector is configured in the first mode, the overpressure valve is closed off.
9. A mattress system according to claim 7 or claim 8, wherein the connector is arranged such that when the connector is configured in the second mode, the
overpressure valve is open to airflow from the first set of interconnected chambers and second set of
interconnected chambers .
10. A mattress system according to any preceding claim, wherein the connector comprises a retaining mechanism for securing an air pump to the connector.
11. A mattress system according to any preceding claim, wherein the connector is arranged such that connection to an air pump automatically configures the connector in the first mode.
12. A mattress system according to any preceding claim, wherein the connector is arranged such that disconnection from an air pump automatically configures the connector in the second mode.
13. A mattress system according to any preceding claim, wherein the first air flow path and second air flow path are associated with biased stop valves.
14. A mattress system according to claim 13, wherein the connector is arranged such that connection of the connector to an air pump displaces the stop valves such that the first air flow path and second air flow path are opened .
15. A mattress system according to claim 13 or claim 14, wherein the connector is arranged such that disconnection of the connector from an air pump permits the biased stop valves to move into a position blocking the first air flow path and second air flow path.
16. A mattress system according to any of claims 1 to 12, wherein the connector comprises one or more turn valves associated with the first air flow path and second air flow path.
17. A mattress system according to claim 16, wherein the first air flow path and second air flow path are opened by turning the turn valves into a first
configuration, and closed by turning the turn valves into a second configuration.
18. A mattress system according to any preceding claim, wherein one or more of the first set of interconnected chambers and second set of interconnected chambers comprises an air inlet valve open to the atmosphere.
19. A mattress system according to any preceding claim, wherein one or more chambers of the first set of
interconnected chambers and second set of interconnected chambers comprises an air retaining material.
20. A connector for use with a mattress comprising a first set of interconnected chambers and a second set of interconnected chambers,
the connector arranged to be joined to the first set of interconnected chambers and second set of
interconnected chambers,
the connector being configurable between:
a first mode in which the connector defines a first airflow path into the first set of interconnected
chambers and a second airflow path into the second set of interconnected chambers, and there is no airflow path between the first set of interconnected chambers and second set of interconnected chambers,
a second mode in which the connector defines a third airflow path between the first set of interconnected chambers and second set of interconnected chambers.
EP17719703.5A 2016-04-25 2017-04-24 Mattress system and connector Active EP3448343B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB201607157A GB2542221B8 (en) 2016-04-25 2016-04-25 Mattress system and connector
PCT/GB2017/051133 WO2017187145A1 (en) 2016-04-25 2017-04-24 Mattress system and connector

Publications (2)

Publication Number Publication Date
EP3448343A1 true EP3448343A1 (en) 2019-03-06
EP3448343B1 EP3448343B1 (en) 2021-03-17

Family

ID=58018352

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17719703.5A Active EP3448343B1 (en) 2016-04-25 2017-04-24 Mattress system and connector

Country Status (4)

Country Link
EP (1) EP3448343B1 (en)
DK (1) DK3448343T3 (en)
GB (1) GB2542221B8 (en)
WO (1) WO2017187145A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023277760A1 (en) * 2021-06-28 2023-01-05 Arjo IP Holding Aktiebolag Inflatable mattress and patient support apparatus

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1283464B (en) * 1964-12-24 1968-11-21 Draegerwerk Ag Rotary slide valve for pressure change mattresses
US5251349A (en) * 1989-03-09 1993-10-12 Ssi Medical Services, Inc. Multi-modal patient support system
US6928681B1 (en) * 1995-11-23 2005-08-16 Kci Licensing, Inc. Alternating pressure pads
US6745996B1 (en) * 1997-07-28 2004-06-08 Gaymar Industries, Inc. Alternating pressure valve system
CN2317368Y (en) * 1997-10-10 1999-05-05 陈铁雄 Improved throttle valve structure for air-cushion bed
GB2380241B (en) * 2001-07-12 2003-08-20 Huntleigh Technology Plc Connector
US8191578B2 (en) * 2007-11-13 2012-06-05 Mego Afek Ac Ltd. Rotary disc valve
EP2467114A2 (en) * 2009-08-19 2012-06-27 Mjs Healthcare Limited Inflatable support for therapeutic treatment and distributor device for controlling fluid supply thereto

Also Published As

Publication number Publication date
GB2542221A (en) 2017-03-15
GB2542221A8 (en) 2021-06-16
GB2542221B8 (en) 2021-06-16
WO2017187145A1 (en) 2017-11-02
EP3448343B1 (en) 2021-03-17
GB2542221B (en) 2017-09-27
DK3448343T3 (en) 2021-06-14

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