GB2384171A - Power-controlled articulated bed - Google Patents

Power-controlled articulated bed Download PDF

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Publication number
GB2384171A
GB2384171A GB0128057A GB0128057A GB2384171A GB 2384171 A GB2384171 A GB 2384171A GB 0128057 A GB0128057 A GB 0128057A GB 0128057 A GB0128057 A GB 0128057A GB 2384171 A GB2384171 A GB 2384171A
Authority
GB
United Kingdom
Prior art keywords
bed
control means
electronic control
actuator
articulated
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.)
Withdrawn
Application number
GB0128057A
Other versions
GB0128057D0 (en
Inventor
John Christopher Rees
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.)
SMARTASYSTEMS Ltd
Original Assignee
SMARTASYSTEMS 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 SMARTASYSTEMS Ltd filed Critical SMARTASYSTEMS Ltd
Priority to GB0128057A priority Critical patent/GB2384171A/en
Publication of GB0128057D0 publication Critical patent/GB0128057D0/en
Priority to EP02779720A priority patent/EP1453462A1/en
Priority to PCT/GB2002/005249 priority patent/WO2003045300A1/en
Priority to AU2002343059A priority patent/AU2002343059A1/en
Publication of GB2384171A publication Critical patent/GB2384171A/en
Priority to US10/852,384 priority patent/US20040216235A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61GTRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/002Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame
    • A61G7/018Control or drive mechanisms
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61GTRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/05Parts, details or accessories of beds
    • A61G7/0527Weighing devices
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61GTRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G2203/00General characteristics of devices
    • A61G2203/10General characteristics of devices characterised by specific control means, e.g. for adjustment or steering
    • A61G2203/12Remote controls
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61GTRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G2203/00General characteristics of devices
    • A61G2203/70General characteristics of devices with special adaptations, e.g. for safety or comfort
    • A61G2203/72General characteristics of devices with special adaptations, e.g. for safety or comfort for collision prevention
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61GTRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/05Parts, details or accessories of beds
    • A61G7/057Arrangements for preventing bed-sores or for supporting patients with burns, e.g. mattresses specially adapted therefor
    • A61G7/0573Arrangements for preventing bed-sores or for supporting patients with burns, e.g. mattresses specially adapted therefor with mattress frames having alternately movable parts

Landscapes

  • Health & Medical Sciences (AREA)
  • Nursing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Invalid Beds And Related Equipment (AREA)

Abstract

An articulated bed comprising at least one actuator (4) for adjusting the configuration of the bed and electronic control means (6) for controlling the operation of the or each actuator (4) according to the output of at least one position measuring device. Thus the configuration of the bed may be accurately set, regardless of the extent to which the bed is loaded. The control means may include a bus, a microcontroller and peripherals. Control may be by two modes and the control means may be interrogated or logged.

Description

BED The present invention relates to a bed and more particularly to a re-
configurable hospital bed.
It is known to prevent the onset of bed-sores by periodically adjusting the surface profile of a hospital bed, 5 by means of one or more electrical, pneumatic or hydraulic actuators, to vary the anatomical points at which a patient is supported. More elaborate beds comprise electronic control means for adjusting the configuration of the bed in a pre-programmed 10 sequence.
However, the actual configuration of such beds can only be estimated at each stage in the cycle of operation of the bed and will typically deviate from that estimate according to the extent to which the bed is loaded.
15 It is therefore desirable to provide an alternative control arrangement wherein a bed may be configured more accurately to ensure that a patient is provided with the I, optimum degree of relief from bed- sores.
We have now devised an arrangement which overcomes the 20 limitations of existing re-configurable, articulated hospital beds. In accordance with the present invention, there is provided an articulated bed comprising at least one actuator for adjusting the configuration of the bed and electronic 25 control means for controlling the operation of the or each actuator according to the output of at least one position measuring device.
Thus the configuration of the bed may be accurately set, regardless of the extent to which the bed is loaded.
30 The electronic control means may be arranged to continuously or discretely adjust the configuration of the bed according to a predetermined sequence and/or to allow real time control of the configuration of the bed by an operator.
Preferably the electronic control means are arranged to
operate the or each actuator to prevent any collision between parts of the bed.
Preferably the electronic control means are arranged to log the output of the or each position measuring device, for 5 example to provide evidence for establishing whether a patient has received the required degree of care.
Preferably said at least one position measuring device comprises a respective position measuring device associated with, and preferably incorporated into, the or each actuator.
10 Preferably the or each actuator is driven from a re chargeable electrical supply, the electronic control means being arranged to charge the re-chargeable supply, from a mains supply, when no actuator is being driven.
Preferably the electronic control means are arranged to 15 sense to extent to which the re-chargeable supply is charged and to prevent operation of the or each actuator where the re-
chargeable supply stores less than a pre-determined amount of charge. Preferably the electronic control means are arranged to 20 sense the amount of current drawn by the or each actuator, for example to detect an abnormal load or fault condition.
Preferably the electronic control means are arranged to be connected to external data processing means, for example to remote monitoring, data logging or diagnostics means (for 25 identifying mechanical/electrical faults).
Preferably the electronic control means comprise a microcontroller. Preferably the electronic control means are arranged to communicate with at least one peripheral device, such as an 30 electronic sensing device. Preferably the electronic control means are arranged to communicate with the or each peripheral device via a data communications bus.
Preferably the data communications bus comprises at least one nodes to which a peripheral device may be selectively 35 connected. The or each node may be arranged for the connection
thereto of a single respective type of device, or may be arranged to operate in different modes according to the type of peripheral device connected thereto.
Preferably the peripheral device comprises an 5 electronic sensing device and the electronic control means are arranged to log output signals from the sensing device.
Preferably the electronic sensing device comprises a device selected from at least the following: an anti-entrapment device; a device which senses whether the bed is occupied 10 (which may comprise a weight sensing device); a moisture sensing device for detecting whether a patient has urinated in the bed; a vibration sensing device; and a device recording the attendance of a care worker (such as a swipe card reader).
Alternatively the peripheral device may comprise a 15 hand-held controller via which an operator may program the electronic control means to determine the sequence according to which the configuration of the bed will subsequently be adjusted or via which an operator may control the configuration of the bed in real time. In the former case, the hand-held 20 controller preferably comprises display means.
Also in accordance with the present invention, there is provided a bed comprising at least one electronic sensing device and electronic data logging means arranged to log the output of the or each sensing device.
25 Preferably the data logging means are arranged to receive signals from the or each sensing device via a data communications bus to which the or each sensing device may be selectively connected.
Preferably the or each sensing device comprises a 30 device selected from at least: an anti-entrapment device; a device which senses whether the bed is occupied (which may comprise a weight sensing device); a moisture sensing device for detecting whether a patient has urinated in the bed; a vibration sensing device; a device recording the attendance of 35 a care worker (such as a swipe card reader).
Further in accordance with the present invention, there is provided an articulated bed comprising at least one actuator for adjusting the configuration of the bed and electronic control means for controlling the operation of the or each 5 actuator in response to control signals from a remote hand-held controller and in one of two modes, according to whether the hand-held controller is of a first type or a second type.
Thus, for example, a care worker may be provided with a first type of controller and a patient with a second type of 10 controller, to allow the care worker to control functions of the bed not controllable by the patient.
The hand-held controller may, for example, provide a means via which an operator may program the electronic control means to determine a sequence according to which the 15 configuration of the bed will subsequently be adjusted or via which an operator may control the configuration of the bed in real time. In the former case, the hand-held controller preferably comprises display means.
Still further in accordance with the present invention, 20 there is provided an articulated bed comprising at least one actuator for adjusting the configuration of the bed and electronic control means for controlling the operation of the or each actuator, the electronic control means being arranged to be remotely interrogated, via a telecommunications link, to 25 identify any mechanical or electrical fault condition of the bed. The present invention also encompasses electronic control means arranged to control the operation of at least one actuator to adjust the configuration of an articulated bed 30 according to the output of at least one position measuring device and/or in response to control signals from a hand-held controller and in one of two modes, according to whether the hand-held controller is of a first or a second type and/or with the electronic control means arranged to be remotely 35 interrogated, via a telecommunications link, to identify any
mechanical or electrical fault condition of the bed.
Embodiments of the present invention will now be described by way of examples only and with reference to the accompanying drawings, in which: 5 Figure 1 is a schematic side elevation of a bed in accordance with the present invention; and Figure 2 is a schematic block diagram of an electronic control system of the bed.
Referring to Figure 1 of the drawings, an articulated 10 hospital bed is shown comprising a plurality of surface sections 2 for supporting a patient, the height and inclination of each of the sections being adjustable by means of a plurality of linear actuators 4, to vary the surface profile of the bed.
15 The linear actuators 4 are each controlled by an electronic bed control system, shown as a schematic block diagram in Figure 2, the control system comprising a microcontroller-based controller 6 arranged to control the supply of power from a rechargeable power supply 8 to each of 20 the actuators 4, to thereby adjust the configuration of the bed, either according to a programmed sequence or in real time under the control of an operator.
The prevailing configuration of the bed is determined by the controller 6 from the outputs of a plurality of position 25 measuring devices, in the form respective Hall-effect sensors incorporated into each of the actuators 4, which communicate with the controller 6 via a multiplexed data bus 10. Such an arrangement ensures that a desired surface profile for the bed may be accurately set, regardless of the degree of loading to 30 which the bed is subjected.
Calculations made by the controller 6 ensure that no collisions occur between parts of the bed during any adjustment of its configuration.
The controller 6 also maintains a timed log of the 35 outputs of the various position measuring devices, in case this
data should subsequently be required, for example as evidence of correct use of the bed.
When no actuator 4 is being driven, the controller 6 causes the rechargeable supply 8 to be charged from a mains 5 supply. Thus, a sufficient amount of residual charge should always be held by the rechargeable supply 8. However, as a safety precaution, the controller is arranged to sense to extent to which the re-chargeable supply 8 is charged and to prevent operation of the actuators 4 where less than a pre 10 determined amount of charge is stored.
By sensing the amount of current drawn by the or each actuator 4, thecontroller 6 is also able to detect any abnormal load or fault conditions that may arise.
The controller 6 is arranged to communicate with the 15 position measuring devices and with a one or more peripheral input or output devices 16 via the data communications bus 10.
The data communications bus 10 comprises a plurality of nodes 14, to each of which a respective peripheral device 16 such as an operating hand-set, an anti-entrapment device, a 20 device which senses whether the bed is occupied, a moisture sensing device for detecting whether a patient has urinated in the bed, a vibration sensing device, or a device recording the attendance of a care worker (such as a swipe card reader) may be selectively connected, the controller 6 being arranged to 25 log the output signals of any such device 16 connected to the bus 10.
An interface 18 is also provided for connecting the controller 6 to external data processing means, for example to remote monitoring, data logging or diagnostics means (for 30 identifying mechanical/electrical faults in the bed or controller) The apparatus thus described provides for an improved level of patient care in a hospital or other such facility.

Claims (1)

  1. Claims
    1) An articulated bed comprising at least one actuator for adjusting the configuration of the bed and electronic control means for controlling the operation of the or each 5 actuator according to the output of at least one position measuring device.
    2) An articulated hospital bed as claimed in Claim 1, wherein the electronic control means are arranged to continuously or discretely adjust the configuration of the bed 10 according to a pre-determined sequence.
    3) An articulated bed as claimed in Claim 1 or Claim 2, wherein the electronic control means are arranged to allow real-time control of the configuration of the bed by an operator. 15 4) An articulated bed as claimed in any preceding claim, wherein the electronic control means are arranged to operate the or each actuator to prevent any collision between parts of the bed.
    5) An articulated bed as claimed in any preceding claim, 20 wherein the electronic control means are arranged to log the output of the or each position measuring device.
    6) An articulated bed as claimed in any preceding claim, wherein said at least one position measuring device comprises a respective position measuring device associated with the or 25 each actuator.
    7) An articulated bed as claimed in Claim 6, wherein said at least one position measuring device comprises a respective position measuring device incorporated into each actuator.
    8) An articulated bed as claimed in any preceding claim, wherein the or each actuator is driven from a re-chargeable electrical supply, the electronic control means being arranged to charge the re-chargeable supply, from a mains supply, when 5 no actuator is being driven.
    9) An articulated bed as claimed in any preceding claim, wherein the electronic control means are arranged to sense to extent to which the rechargeable supply is charged and to prevent operation of the or each actuator where the re 10 chargeable supply stores less than a predetermined amount of charge. 10) An articulated bed as claimed in any preceding claim, wherein the electronic control means are arranged to sense the amount of current drawn by the or each actuator.
    15 11) An articulated bed as claimed in any preceding claim, wherein the electronic control means are arranged to be connected to external data processing means.
    12) An articulated bed as claimed in any preceding claim, wherein the electronic control means comprise a 20 microcontroller.
    13) An articulated bed as claimed in any preceding claim, wherein the electronic control means are arranged to communicate with at least one peripheral device.
    14) An articulated bed as claimed in Claim 13, wherein the 25 electronic control means are arranged to communicate with the or each peripheral device via a data communications bus.
    15) An articulated bed as claimed in Claim 14, wherein the data communications bus comprises at least one node to which
    a peripheral device may be selectively connected.
    16) An articulated bed as claimed in Claim 15, wherein the or each node is arranged for the connection thereto of a single respective type of device 5 17) An articulated bed as claimed in Claim 15, wherein the or each node is arranged to operate in different modes according to the type of peripheral device connected thereto.
    18) An articulated bed as claimed in any of Claims 13 to 17, wherein said at least one peripheral device comprises an 10 electronic sensing device and the electronic control means are arranged to log output signals from the sensing device.
    19) An articulated bed as claimed in any of Claims 13 to 18, wherein the peripheral device comprises a device selected from: an anti-entrapment device; a device which senses whether 15 the bed is occupied (which may comprise a weight sensing device); a moisture sensing device for detecting whether a patient has urinated in the bed; a vibration sensing device; and a device recording the attendance of a care worker (such as a swipe card reader).
    20 20) A bed comprising at least one electronic sensing device and electronic data logging means arranged to log the output of the or each sensing device.
    21) A bed as claimed in Claim 20, wherein the data logging means are arranged to receive signals from the or each sensing 25 device via a data communications bus to which the or each sensing device may be selectively connected.
    22) A bed as claimed in Claim 21, wherein the or each sensing device comprises a device selected from: an anti
    entrapment device; a device which senses whether the bed is occupied (which may comprise a weight sensing device); a moisture sensing device for detecting whether a patient has urinated in the bed; a vibration sensing device; a device 5 recording the attendance of a care worker (such as a swipe card reader). 23) An articulated bed comprising at least one actuator for adjusting the configuration of the bed and electronic control means for controlling the operation of the or each actuator in 10 response to control signals from a remote hand-held controller and in one of two modes, according to whether the hand-held controller is of a first type or a second type.
    24) An articulated bed comprising at least one actuator for 15 adjusting the configuration of the bed and electronic control means for controlling the operation of the or each actuator, the electronic control means being arranged to be remotely interrogated, via a telecommunications link, to identify any mechanical or electrical fault condition of the bed.
    20 25) Electronic control means arranged to control the operation of at least one actuator to adjust the configuration of an articulated bed according to the output of at least one position measuring device.
    26) Electronic control means arranged to control the 25 operation of at least one actuator to adjust the configuration of an articulated bed in response to control signals from a hand-held controller and in one of two modes, according to whether the hand-held controller is of a first or a second type. 30 27) Electronic control means arranged to control the operation of at least one actuator to adjust the configuration
    of an articulated bed, the electronic control means being arranged to be remotely interrogated, via a telecommunications link, to identify any mechanical or electrical fault condition of the bed.
    5 28) A bed substantially as herein described with reference to the accompanying drawings.
    29) Electronic control means arranged to control the operation of at least one actuator to adjust the configuration of an articulated bed, the electronic control means being 10 substantially as herein described with reference to the accompanying drawings.
GB0128057A 2001-11-22 2001-11-22 Power-controlled articulated bed Withdrawn GB2384171A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB0128057A GB2384171A (en) 2001-11-22 2001-11-22 Power-controlled articulated bed
EP02779720A EP1453462A1 (en) 2001-11-22 2002-11-22 Bed
PCT/GB2002/005249 WO2003045300A1 (en) 2001-11-22 2002-11-22 Bed
AU2002343059A AU2002343059A1 (en) 2001-11-22 2002-11-22 Bed
US10/852,384 US20040216235A1 (en) 2001-11-22 2004-05-24 Bed

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0128057A GB2384171A (en) 2001-11-22 2001-11-22 Power-controlled articulated bed

Publications (2)

Publication Number Publication Date
GB0128057D0 GB0128057D0 (en) 2002-01-16
GB2384171A true GB2384171A (en) 2003-07-23

Family

ID=9926292

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0128057A Withdrawn GB2384171A (en) 2001-11-22 2001-11-22 Power-controlled articulated bed

Country Status (4)

Country Link
EP (1) EP1453462A1 (en)
AU (1) AU2002343059A1 (en)
GB (1) GB2384171A (en)
WO (1) WO2003045300A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0523182D0 (en) * 2005-11-14 2005-12-21 Huntleigh Technology Plc Bed control procedure
US20100000017A1 (en) * 2008-07-07 2010-01-07 Laloge Dennis P Lift System with Kinematically Dissimilar Lift Mechanisms
DE202011107540U1 (en) 2010-11-16 2011-12-13 Völker AG Bed for a bed, especially nursing and / or hospital bed
BR102017001670B1 (en) * 2017-01-26 2021-01-12 Kléber Elias Tavares oscillating bed for the prevention of decubitus ulcers

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4401928A (en) * 1979-11-21 1983-08-30 Nissan Motor Company, Limited Seat position automatic adjusting device for an automotive vehicle
US4463426A (en) * 1979-10-12 1984-07-31 International Telephone And Telegraph Corporation Automatic position control for a vehicle seat
GB2189989A (en) * 1986-05-06 1987-11-11 Teves Gmbh Co Ohg Alfred Power adjustable seat, for example for automotive vehicles
US4769584A (en) * 1985-06-18 1988-09-06 Thomas J. Ring Electronic controller for therapeutic table
US5023967A (en) * 1988-03-23 1991-06-18 American Life Support Technology Patient support system
DE29712857U1 (en) * 1997-07-21 1997-09-25 Dewert Antriebs- und Systemtechnik GmbH & Co KG, 32278 Kirchlengern Reclining furniture

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5926002A (en) * 1995-02-21 1999-07-20 Getinge/Castle, Inc. Pendent with safety features for patient handling apparatus
US5771511A (en) * 1995-08-04 1998-06-30 Hill-Rom, Inc. Communication network for a hospital bed
DE19603318A1 (en) * 1996-01-31 1997-08-14 Dewert Antriebs Systemtech Control system for electric motor-operated adjustment devices for hospital beds
US6155976A (en) * 1997-03-14 2000-12-05 Nims, Inc. Reciprocating movement platform for shifting subject to and fro in headwards-footwards direction

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4463426A (en) * 1979-10-12 1984-07-31 International Telephone And Telegraph Corporation Automatic position control for a vehicle seat
US4401928A (en) * 1979-11-21 1983-08-30 Nissan Motor Company, Limited Seat position automatic adjusting device for an automotive vehicle
US4769584A (en) * 1985-06-18 1988-09-06 Thomas J. Ring Electronic controller for therapeutic table
GB2189989A (en) * 1986-05-06 1987-11-11 Teves Gmbh Co Ohg Alfred Power adjustable seat, for example for automotive vehicles
US5023967A (en) * 1988-03-23 1991-06-18 American Life Support Technology Patient support system
DE29712857U1 (en) * 1997-07-21 1997-09-25 Dewert Antriebs- und Systemtechnik GmbH & Co KG, 32278 Kirchlengern Reclining furniture

Also Published As

Publication number Publication date
WO2003045300A1 (en) 2003-06-05
GB0128057D0 (en) 2002-01-16
AU2002343059A1 (en) 2003-06-10
EP1453462A1 (en) 2004-09-08

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WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)