EP1702600B1 - Krankentrage - Google Patents

Krankentrage Download PDF

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Publication number
EP1702600B1
EP1702600B1 EP06250692A EP06250692A EP1702600B1 EP 1702600 B1 EP1702600 B1 EP 1702600B1 EP 06250692 A EP06250692 A EP 06250692A EP 06250692 A EP06250692 A EP 06250692A EP 1702600 B1 EP1702600 B1 EP 1702600B1
Authority
EP
European Patent Office
Prior art keywords
stretcher
driven wheel
driven
ground
movement
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.)
Not-in-force
Application number
EP06250692A
Other languages
English (en)
French (fr)
Other versions
EP1702600A1 (de
Inventor
Robert c/o Ferno Williamson (UK) Limited
David c/o Ferno Whyman (UK) Limited
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.)
Ferno UK Ltd
Original Assignee
Ferno UK 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 Ferno UK Ltd filed Critical Ferno UK Ltd
Publication of EP1702600A1 publication Critical patent/EP1702600A1/de
Application granted granted Critical
Publication of EP1702600B1 publication Critical patent/EP1702600B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • A61G7/08—Apparatus for transporting beds
    • 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
    • A61G1/00—Stretchers
    • A61G1/02—Stretchers with wheels
    • A61G1/0206—Stretchers with wheels characterised by the number of supporting wheels if stretcher is extended
    • A61G1/0218—3 pairs having wheels within a pair on the same position in longitudinal direction, e.g. on the same axis
    • 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
    • A61G1/00—Stretchers
    • A61G1/02—Stretchers with wheels
    • A61G1/0237—Stretchers with wheels having at least one swivelling wheel, e.g. castors
    • 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
    • A61G1/00—Stretchers
    • A61G1/02—Stretchers with wheels
    • A61G1/025—Stretchers with wheels having auxiliary wheels, e.g. wheels not touching the ground in extended position
    • A61G1/0268—Stretchers with wheels having auxiliary wheels, e.g. wheels not touching the ground in extended position having deployable or retractable wheels
    • 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
    • A61G1/00—Stretchers
    • A61G1/02—Stretchers with wheels
    • A61G1/0275—Stretchers with wheels having driven wheels, e.g. motorised
    • 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
    • A61G1/00—Stretchers
    • A61G1/02—Stretchers with wheels
    • A61G1/0287—Stretchers with wheels having brakes, e.g. slowing down and/or holding
    • 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
    • A61G7/0528—Steering or braking devices for castor wheels

Definitions

  • the present invention relates to a stretcher and a method of operating a stretcher.
  • any reference to a stretcher includes a stretcher trolley.
  • Stretchers are presently manoeuvred manually by an operator who exerts the forces required to direct and move the stretcher about hospital ward, between wards, between ambulances and between ambulances and incidents.
  • the operator has to exert a considerable force in order to control the stretcher. The effect can be bad for the back of the operator.
  • the force is increased when manoeuvring the stretcher up steep inclines or ramps, such as an ambulance ramp or hospital ramp.
  • the wheels of the stretcher are mounted on swivels, which, particularly if the ramp tilts to one side (such as may occur when the vehicle is not parked on level ground), as the operator pushes the stretcher up it can run off the stretcher.
  • the stretcher can run off course when going up or down hill or on a slope.
  • the stretcher can run away down hill if on a steep hill or if the operator slips and loses grip. All of these problems are accentuated when the patient on the stretcher is particularly heavy.
  • US-A-2003/0159861 discloses a wheeled carriage for supporting a patient in a substantially horizontal position.
  • a control apparatus controls the wheel support structure to move the auxiliary wheels between a first deployed position whereat castered wheels one end of the carriage are elevated from a floor surface, and a second stored position with the auxiliary wheels out of engagement with the floor surface.
  • EP-A-0769286 discloses a further patient transfer apparatus having casters disposed at four locations on a frame, and a drive mechanism which is elevatable with respect to the frame.
  • a stretcher includes at least three non-driven wheels and at least one driven wheel, the driven wheel being moveable relative to at least one of the non-driven wheels between a driven position in which the driven wheel is in contact with the ground and a non-driven position in which the driven wheel is spaced from the ground, characterised by: the stretcher being adapted such that the height of a patient support above the ground, in the region of the driven wheel first decreases and then increases as movement occurs between the two positions.
  • At least one of the driven wheels or a non-driven wheel may be moveably mounted on the stretcher in order to effect the movement between the two positions.
  • At least one of the non-driven wheels may be spaced on the ground.
  • the driven wheel may be pivotally mounted on the stretcher about an axis offset from that wheels rotational axis to effect the movement between the driven and non-driven positions.
  • the movement in at least one direction between the positions may be effected by driving means.
  • the drive means may be arranged to hold the stretcher in at least one of the positions with the hold being exerted in at least one of the positions being releasable.
  • the movement from at least one position to another may be effected by manual movement of a telescopic arm.
  • the movement in at least one direction between the positions may be effected by driving means which may include an extendable and contractible member pivotably connected to the stretcher and a link at a location spaced from the pivotal mounting of the link to the stretcher.
  • the movement from the driving position to the non-driving position may be at least initially pivotal movement about the point of contact of the driven wheel with the ground.
  • the driven wheel may be larger than the non-driven wheel such as being more than twice the diameter of the non-driven wheel.
  • the drive When the wheel is in the driving position the drive may be arranged to be able to act as a brake should the stretcher be going down an incline.
  • the arrangement may include a battery arranged to power the drive wheel.
  • a battery may be arranged to drive the movement between at least one of the positions.
  • the angle of the axis of the driven wheel may be fixed with respect to the longitudinal extent of the stretcher.
  • the axis of at least one non-driven wheel may be able to move about an upwardly extending axis and may be selectively lockable in at least one position of the upwardly extending axis.
  • the driven wheel may be located between non-driven wheels in the direction of longitudinal extent of the stretcher.
  • the non-driven wheel may be located towards one end of the stretcher in the region of a support extending up from a lower region of the trolley to a patient support for a body.
  • the driven wheel may be pivotally connected to the support.
  • the driven wheel and the non-driven wheel may be located in the region of the support with each being either side of the support in the longitudinal extent of the trolley.
  • a method of operating a stretcher that includes at least three non-driven wheels and at least one driven wheel comprising moving at least one of the wheels between a driven position in which the driven wheel is in contact with the ground and a non-driven position in which the driven wheel is spaced from the ground; characterised by: causing a support for a patient located above the region of the driven wheel to move first downwardly and then upwardly when moving from the driven position to the non-driven position.
  • the method may comprise causing at least one non-driven wheel to be clear of the ground in the driven position.
  • the method may comprise causing the non-driven wheel to be clear of the ground in the driven position at a location spaced from the longitudinal extent of the remaining wheels in contact with the ground.
  • the drive means may include, although by no means be limited to, linear lead-screw actuators, hydraulic actuators, or electro-hydraulic actuators.
  • the present invention includes any combination as claimed.
  • the patient support 4 is mounted on a first support 32, which extends upwardly from the front of the main fame 10, and a second support 34, which extends upwardly from the rear of the main frame 10 so that the patient support 4 is held mainly flat or horizontal.
  • the lower end of the second, rear support 34 is fixed to an upwardly extending arm 10a of the main frame 10.
  • the upper end region of the second, rear support 34 is connected by a first group of co-operating parts 36 to the patient support 4.
  • the lower end region of the first, front support 32 is attached to a piston of a first linear actuator 38 by a second group of co-operating parts 40.
  • the upper end region of the first support 32 is connected by a third group of co-operating parts 42 to the patient support 4.
  • the lower end of the actuator 38 is fixed to an upwardly extending arm 10b of the main frame 10.
  • the configuration of the patient support 4, the first support 32, the second support 34, the first linear actuator 38, and the three groups of co-operating parts 36,40 and 42 is such that the first linear actuator may be driven to extend or contract a piston 38a of the linear actuator in order to incline or decline the angle of the patient support 4.
  • the patient support 4 When inclined, the patient support 4 may, for instance, be raised up to 15° to drain fluid from the legs of a patient on the support 4 with pivot occurring about the parts 36.
  • the first linear actuator 38 may be controlled by an operator controlling a two-position or multi-position switch, such as a rocker switch, which may be positioned at the rear of the trolley.
  • a battery 56 mounted on the main frame 10 is able to power the actuator 38 in order to extend or contract the piston 38a using any well known method.
  • the main frame 10 provides the housing for the two front castor wheels 6a and 6b.
  • the castor wheels 6a and 6b are aligned substantially in the same plane and at the first trolley end region and are spaced apart laterally across the stretcher, generally being positioned on the widest portion of the main frame 10.
  • the front castor wheels are able to rotate about a horizontal axis and can swivel about a vertical axis on a stub shaft 47, offset from the horizontal axis.
  • the rear castor wheels 6c and 6d are able to rotate in the same way as the front castor wheels.
  • a sub frame comprising two side rails 50 and two cross rails 52 is pivotally mounted at points 20 on the main frame 10 at the rear end such that the sub frame 16 is able to pivot about a horizontal axis.
  • Rear castor wheels 6c and 6d are located on the rearward projecting end region of the sub frame 16.
  • the castor wheel stub axles 48 of the rear castor wheels pivot with the sub frame about the pivot points 20.
  • the driven wheels 8 are mounted on axles 54 that project from a forward region of the sub frame, spaced from the pivot points 20 of the sub frame.
  • the battery 56 powers a motor 58 mounted on the axle 54 or the sub frame 16 in order to drive the axle 54 and subsequently the wheels 8 in any well known manner.
  • the motor may impart a drive via an induction force being applied to a magnet fast with the axles 54.
  • a second actuator 60 controls the movement of the sub frame 16 about the pivot points 20.
  • the second actuator 60 is rotatably fixed at the upper end to the upwardly extending arm 10a just forward of that arm.
  • the lower end of the actuator 60 is pivotally connected to the axle 54 of the sub frame 6 such that when the piston 66 of the second actuator 60 is extended or contracted the point at which the actuator 60 is located on the sub frame 16 moves up or down through a circumferential path by rotating about the pivot points 20.
  • the battery 56 powers the actuator 60 to extend or contract a piston 66 of the actuator.
  • a two-position switch such as a rocker switch, which may be positioned at the rear end of the trolley and controlled by an operator, may control the extension or contraction of the actuator 60.
  • the stretcher can be moved by an operator at the rear of the trolley using a lever, which initiates and varies the speed of rotation of the drive shaft from the motor and the speed of travel of the trolley.
  • the lever can be moved in an opposite direction to initiate and vary the speed of reverse rotation of the axle 54.
  • the motor may include a positive drive that prevents the axle 54 from being able to rotate faster than that set by the lever to prevent the runaway of the stretcher down inclines.
  • the actuator piston 66 may contract to initiate the transition to the first position 22. Alternatively the actuator may relax such that all driven and non driven wheels contact the ground.
  • a telescopic lever 31 held fast to the sub frame is extended from the sub frame 16 by any well-known means.
  • the actuator piston 66 is unloaded such that the co-operating parts of the actuator 60 do not resist rotational movement of the sub frame 16.
  • a downwards force exerted on the lever 31 by the hand or foot of an operator acts to rotate the sub frame 16 in to the first transition position.
  • the actuator piston 66 may be re-locked in order to impart the necessary rotational movement of the sub frame 16 or the lever may be moved sideways to engage with a locking part of the main frame. Return movement and locking is a reverse of this operation.
  • the pistons may comprise linear actuators whereby a nut is axially fixed but rotated to drive the piston axially with regard to the rotation of the nut.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Nursing (AREA)
  • Handcart (AREA)
  • Weting (AREA)
  • Invalid Beds And Related Equipment (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Claims (17)

  1. Trage (2) umfassend zumindest drei nicht angetriebene Räder (6a, 6b, 6c, 6d) und zumindest ein angetriebenes Rad (8), bei welcher das angetriebene Rad (8) relativ zu zumindest einer der nicht angetriebenen Räder (6a, 6b, 6c, 6d) zwischen einer angetriebenen Position, in welcher das angetriebene Rad (8) mit dem Boden in Kontakt steht, und einer nicht angetriebenen Position, in welcher das angetriebene Rad vom Boden beabstandet ist, beweglich ist;
    dadurch gekennzeichnet,
    dass die Trage (2) so ausgelegt ist, dass die Höhe einer Patientenauflage (4) über dem Boden im Bereich des angetriebenen Rades zuerst ab- und dann zunimmt, wenn eine Bewegung zwischen den zwei Positionen erfolgt,
  2. Trage wie in Anspruch 1 beansprucht, bei welcher die Höhe einer Patientenauflage (4) über dem Bereich des angetriebenen Rades (8) im Wesentlichen die gleiche in beiden Positionen ist.
  3. Trage wie in einem der vorangehenden Ansprüche beansprucht, bei welcher in der Fahrposition zumindest eines der nicht angetriebenen Räder (6c, 6d) vom Boden beabstandet ist und von der Erstreckung zwischen den nicht angetriebenen Rädern (6c und 6d), welche mit dem Boden in Kontakt stehen, und den angetriebenen Rädern (8) beabstandet ist.
  4. Trage wie in Anspruch 3 beansprucht, bei welcher ein nicht angetriebenes Rad (6c, 6d), welches vom Boden beabstandet ist, um seine eigene Radachse und eine weitere Achse drehbar ist, die von dieser Achse beabstandet ist, wobei das nicht angetriebene Rad (6c, 6d) um diese weitere Achse bewegt und in der Position um diese weitere Achse gesperrt werden kann, um das nicht angetriebene Rad (6c, 6d) weiter vom Boden zu bewegen.
  5. Trage wie in Anspruch 4 beansprucht, bei welcher diese weitere Achse eine sich nach oben erstreckende Achse ist.
  6. Trage wie in einem vorhergehenden Anspruch beansprucht, bei welcher zumindest ein nicht angetriebenes Rad (6c, 6d) schwenkbar um eine Achse auf der Trage (2) montiert ist, welche von der Drehachse des nicht angetriebenen Rades (6c, 6d) beabstandet ist, um die Bewegung zwischen den Positionen zu bewerkstelligen.
  7. Trage wie in Anspruch 6 beansprucht, bei welcher das angetriebene Rad (8) schwenkbar um eine Achse auf der Trage (2) montiert ist, welche von der Drehachse des angetriebenen Rads (8) beabstandet ist, um die Bewegung zwischen der angetriebenen und der nicht angetriebenen Position zu bewerkstelligen und bei welcher das angetriebene Rad (8) und das nicht angetriebene Rad (6c, 6d) mit einer Verbindung (50) verbunden sind, welche schwenkbar an der Trage (2) montiert ist, wobei die Drehachse des angetriebenen Rades (8) in der Längserstreckung der Trage (2) auf einer Seite der schwenkbaren Festlegung der Verbindung (50) auf der Trage (2) und die Drehachse des nicht angetriebenen Rades (6c, 6d) auf der anderen Seite ist.
  8. Trage wie in einem vorhergehenden Anspruch beansprucht, bei welcher die Bewegung in zumindest einer Richtung zwischen den Positionen durch Antriebsmittel (60) bewerkstelligt wird und wobei die Antriebsmittel (60) angeordnet sind um die Trage in zumindest einer der Positionen zu halten.
  9. Trage wie in einem der vorhergehenden Ansprüche beansprucht, bei welcher die Bewegung von zumindest einer Position in die andere manuell bewerkstelligt wird.
  10. Trage wie in Anspruch 9 beansprucht, bei welcher die Bewegung mittels eines Hebels (31) bewerkstelligt wird.
  11. Trage wie in Anspruch 10 beansprucht, wenn dieser von Anspruch 8 abhängig ist, bei welcher die Verbindung (50) mit dem Hebel (31) um die Drehachse der Verbindung (50) zwangsgeführt ist.
  12. Trage wie in Anspruch 11 beansprucht, bei welcher der Hebel (31) in einen Sperrzustand bewegbar ist, um eine Drehbewegung der Verbindung (50) in zumindest einer Position zu verhindern.
  13. Trage wie in Anspruch 12 beansprucht, wenn dieser von Anspruch 8 abhängig ist, bei welcher die schwenkbare Verbindung der Antriebsmittel (60) zu der Verbindung (50) mit der Drehachse des angetriebenen Rades und/oder eines nicht angetriebenen Rades zusammenfällt.
  14. Trage wie in einem der vorhergehenden Ansprüche beansprucht, bei welcher die Trage (2) so ausgelegt ist, dass die Bewegung von der Fahrposition in die Nicht-Fahrposition zumindest anfänglich eine Drehbewegung um den Kontaktpunkt des angetriebenen Rades (8) mit dem Boden ist und zumindest gegen Ende dieser Bewegung eine Drehbewegung um den Kontakt des zumindest einen nicht angetriebenen Rades (6c, 6d) ist.
  15. Verfahren zum Bedienen einer Trage, welche zumindest drei nicht angetriebene Räder (6a, 6d) und zumindest ein angetriebenes Rad (8) umfasst, umfassend das Bewegen zumindest eines der Räder (6a, 6d, 8) zwischen einer angetriebenen Position, in welcher das angetriebene Rad (8) mit dem Boden in Kontakt steht und einer nicht angetriebenen Position, in welcher das angetriebene Rad (8) vom Boden beabstandet ist;
    gekennzeichnet durch:
    Veranlassen einer Auflage (4) für einen Patienten, welche oberhalb des Bereichs des angetriebenen Rades (8) angeordnet ist, sich zuerst nach unten und dann nach oben zu bewegen, wenn man aus der angetriebenen Position in die nicht angetriebene Position bewegt.
  16. Verfahren wie in Anspruch 15 beansprucht, umfassend Bewegen des angetriebenen Rades (8) und zumindest des genannten einen nicht angetriebenen Rades 6c, 6d) , wenn man zwischen den Positionen bewegt.
  17. Verfahren wie in Anspruch 15 oder 16 beansprucht, umfassend zumindest ein genanntes nicht angetriebenes Rad (6c, 6d) und zumindest ein genanntes angetriebenes Rad (8), welche über eine gemeinsame Achse verbunden sind und um diese verschwenkbar sind, um die Bewegung aus der Fahrpositon in die Nicht-FahrPosition zu bewerkstelligen.
EP06250692A 2005-03-17 2006-02-09 Krankentrage Not-in-force EP1702600B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0505447A GB2424215A (en) 2005-03-17 2005-03-17 Power-assisted stretcher

Publications (2)

Publication Number Publication Date
EP1702600A1 EP1702600A1 (de) 2006-09-20
EP1702600B1 true EP1702600B1 (de) 2008-12-17

Family

ID=34509196

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06250692A Not-in-force EP1702600B1 (de) 2005-03-17 2006-02-09 Krankentrage

Country Status (4)

Country Link
EP (1) EP1702600B1 (de)
AT (1) ATE417587T1 (de)
DE (1) DE602006004233D1 (de)
GB (1) GB2424215A (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011016054A2 (en) * 2009-08-03 2011-02-10 Subhav Sinha Dynamically stabilized personal transporter
CN109248030A (zh) * 2018-10-05 2019-01-22 丁君浩 一种医疗转运床及配套医用伸缩机构

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5083625A (en) * 1990-07-02 1992-01-28 Bleicher Joel N Powdered maneuverable hospital cart
JP3006672B2 (ja) 1995-09-25 2000-02-07 直人 藤井 運搬装置
JP2000107230A (ja) * 1998-10-09 2000-04-18 S N Seiki:Kk ストレッチャーの装着ユニット
US6772850B1 (en) * 2000-01-21 2004-08-10 Stryker Corporation Power assisted wheeled carriage
CN101791261B (zh) * 2000-05-11 2013-04-24 希尔-罗姆服务股份有限公司 病人支撑台的机动牵引装置
US6752224B2 (en) * 2002-02-28 2004-06-22 Stryker Corporation Wheeled carriage having a powered auxiliary wheel, auxiliary wheel overtravel, and an auxiliary wheel drive and control system
US6725956B1 (en) * 2003-05-06 2004-04-27 Stryker Corporation Fifth wheel for bed

Also Published As

Publication number Publication date
DE602006004233D1 (de) 2009-01-29
GB2424215A (en) 2006-09-20
EP1702600A1 (de) 2006-09-20
GB0505447D0 (en) 2005-04-20
ATE417587T1 (de) 2009-01-15

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