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GB2302672A - Ambulance trolley with powered scissor linkage - Google Patents

Ambulance trolley with powered scissor linkage Download PDF

Info

Publication number
GB2302672A
GB2302672A GB9513053A GB9513053A GB2302672A GB 2302672 A GB2302672 A GB 2302672A GB 9513053 A GB9513053 A GB 9513053A GB 9513053 A GB9513053 A GB 9513053A GB 2302672 A GB2302672 A GB 2302672A
Authority
GB
United Kingdom
Prior art keywords
semi
trolley
ambulance
automatic
unit
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Withdrawn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
GB9513053A
Other versions
GB9513053D0 (en
GB2302672A9 (en
Inventor
Paul Rixon
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.)
Individual
Original Assignee
Individual
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
Publication of GB2302672A9 publication Critical patent/GB2302672A9/en
Application filed by Individual filed Critical Individual
Priority to GB9513053A priority Critical patent/GB2302672A/en
Publication of GB9513053D0 publication Critical patent/GB9513053D0/en
Publication of GB2302672A publication Critical patent/GB2302672A/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Withdrawn legal-status Critical Current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
    • A61G1/00Stretchers
    • A61G1/04Parts, details or accessories, e.g. head-, foot-, or like rests specially adapted for stretchers
    • A61G1/052Struts, spars or legs
    • A61G1/056Swivelling legs
    • A61G1/0565Swivelling legs simultaneously folding, e.g. parallelogram structures
    • A61G1/0567Swivelling legs simultaneously folding, e.g. parallelogram structures folding in x-shape
    • 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
    • A61G1/00Stretchers
    • A61G1/02Stretchers with wheels
    • A61G1/0206Stretchers with wheels characterised by the number of supporting wheels if stretcher is extended
    • A61G1/02122 pairs having wheels within a pair on the same position in longitudinal direction, e.g. on the same axis
    • 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
    • A61G1/00Stretchers
    • A61G1/02Stretchers with wheels
    • A61G1/0237Stretchers with wheels having at least one swivelling wheel, e.g. castors
    • 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
    • A61G1/00Stretchers
    • A61G1/02Stretchers with wheels
    • A61G1/025Stretchers with wheels having auxiliary wheels, e.g. wheels not touching the ground in extended position
    • A61G1/0262Stretchers with wheels having auxiliary wheels, e.g. wheels not touching the ground in extended position having loading wheels situated in the front during loading
    • 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
    • A61G1/00Stretchers
    • A61G1/02Stretchers with wheels
    • A61G1/0287Stretchers with wheels having brakes, e.g. slowing down and/or holding
    • 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

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)
  • Invalid Beds And Related Equipment (AREA)

Abstract

The trolley is operator pushed and guided but is capable of being placed in the ambulance, or other vehicle, by one person unaided. The bottom wheeled chassis 1 is connected to a top patient carrying unit 2 by means of a powered scissor linkage 3. The actuator 4, which may be hydraulic or a low-voltage magnetic linear actuator, is controlled by push buttons 5 linked to a control unit 6 via a flying lead. When elevated, castors 7 attached to the front of the upper unit support most of the load on the vehicle's floor while the other end is supported by the attendant. After the chassis has been retracted the entire trolley is pushed, on its main castors 8, into the ambulance.

Description

SEMI-AUTOMATIC AMBULANCE TROLLEY This invention relates to an ambulance trolley and in particular to a trolley which,when in use with an injured or distressed patient,does not require to be physically lifted into or out of an ambulance or other vehicle.
Statistics in the U.K. reveal that 75% of all ambulance personnel who are injured at work invariably sustain back injuries whilst lifting or moving patients and much of this is due to the fact that the trollies currently in use require two attendants to lift it into or out of a vehicle and during these movements one person is liable to take an unduly high proportion of the load and are thereby strained or injured.The prior art reveals that much work has been reported in this area of automation of the ambulance stretcher trolley and pertinent examples are to be found in the teachings of U.S.5,063,624 which lists its innovation as a "twin jack bed" but which is simply a patient support base operated in the vertical or in the incline by hydraulic cylinders but restricted normally in use to areas with a plug-in mains electricity supply; or again in the teachings of the FR.2,546,4o2 where the trolly supports are rigidly held by inclined jambs whose bottom ends are articulated on the supports but whose top ends are guided in translation along the stretcher platform and can be locked at various positions by location into toothed racks and where the trolley can be manipulated single handed because as it is pushed against the tail-gate of a vehicle the reaction force starts to collapse and fold the supports and,as forward force is maintained, the unit folds as it progresses into the vehicle to leave a simple platform whose undercarriage is now unused except for its castors or wheels.There is a need therefore for an ambulance trolley which is semi-automatic in the sense that it is operator pushed and guided but which is capable of being placed in the ambulance,or other vehicle,by one person unaided. Such a trolley is the subject of the present invention where there is provided a semi-automatic ambulance trolley comprising a wheeled bottom chassis member which is connected to a top member,on which the patient rests,by means of a hydraulically driven scissors linkage system and where the top member is equipped with a front set of castors so that when the driven scissors linkage raises the top member to a level which allows the top pair of castors to contact the ambulance,or other vehicle's, floor the weight of the whole patient occupied unit can be borne between the castors on the vehicle's floor and the attendant at the other end of the unit so that thereafter the attendant can activate a low voltage linear actuator which retracts the undercarriage into the folded or closed position thus allowing the unit to be fully pushed into the vehicle and then locked in position for travelling.
A specific embodiment of the invention will now be described by way of example with reference to the accompanying drawings inwhich: Figure 1 is a side elevation of the semi-automatic ambulance trolley in the folded or retracted position.
Figure 2 is a side elevation of the semi-automatic ambulance trolley in the raised or extended position.
Figure 3 is an end elevation of the trolley in its raised or extended mode.
Referring to the drawings the semi=automatic ambulance trolley comprises a bottom wheeled chassis member 1 which is connected to a top patient carrying unit 2 by means of a scissors-like linkage 3 which is powered by a low voltage magnetic linear actuator 4 so that the trolley can have its patient carrying unit 2 raised or lowered by activation of the flying lead buttons 5 which are linked to the control box 6.When in use the ambulance attendant places the patient on the trolley at its lowest level and then fastens the safety straps whereupon he can now press the "Raise" button on 5 so that the trolley is elevated to a height which is slightly above the ambulance floor height but where the castors 7 can rest on the floor so that the attendant can hold the rear of the trolley in a level position, with most of the load on the ambulance floor via the castors 7,retract the chassis member 1 and thereafter push the entire trolley into the ambulance where it can be locked into the vehicle in the normal ambulance safety manner. When the ambulance arrives at a hospital the trolley is removed from the vehicle by reversing the above procedure. When inside hospitals the trolley can be raised or lowered to suit the height of beds,couches or operating tables without the need to handle or pickup the patient. Such trolleys can oe fitted with safety rails and when in hospital,with the unit at the desired height, these rails can be lowered and the patient "slid" across to transfer to the required situation on the hospital's equipment.
In practice the unit is conveniently made from aluminium tube with the wheels 8 horizontally opposed with brakes and on anti-static tyres,whereas the front castors 7 are rubber on nylon and supported on a single axel. Although the unit can have its lifting and lowering actions powered by hydraulic cylinders it is preferred to use low voltage magnetic linear actuators for this purpose.

Claims (6)

1. A Semi-Automatic Ambulance Trolley comprising a wheeled bottom chassis member which is connected to a top member, on which the patient rests, by means of a hydraulically driven scissors linkage system and where the top member is equipped with a front set of castors so that when the driven scissors linkage raises the top member to a level which allows the top pair of castors to contact the Ambulance, or other vehicle's, floor the weight of the whole patient occupied unit can be borne between the castors on the vehicle's floor and the attendant at the other end of the unit so that thereafter the attendant can activate a low voltage linear actuator which retracts the undercarriage into the folded or closed position thus allowing the unit to be fully pushed into the vehicle and then locked in position for travelling.
2. A Semi-Automatic Ambulance Trolley as claimed in Claim 1, wherein a wheeled bottom chassis member is connected to a top member by means of a low voltage linear actuator driven scissors linkage system.
3. A Semi-Automatic Ambulance Trolley as claimed in Claim 1 or Claim 2, wherein the driven scissor linkage means and the retracting undercarriage means are one and the same.
4. A Semi-Automatic Ambulance Trolley as claimed in any preceding claim including safety rails and, with the unit at the desired height, these rails can be lowered to permit patient transfer to an Hospital's equipment.
5. A Semi-Automatic Ambulance Trolley as claimed in any preceding claim which is made from metal, plastics or composite material, or from a combination of these materials but more conveniently aluminium tube.
6. A Semi-Automatic Ambulance Trolley substantially as described herein with reference to the accompanying drawings, Figs 1 to 3.
6. A Semi-Automatic Ambulance Trolley substantially as described herein with reference to the accompanying drawings, Figs 1 to 3.
Amendments to the claims have been filed as follows CLAIMS 1. A Semi-Automatic Ambulance Trolley comprising a wheeled bottom chassis member which is connected to a top member, on which the patient rests, by means of a low voltage linear acutuator driven scissors linkage system and where the top member is equipped with a front set of castors so that when the driven scissors linkage raises the top member to a level which allows the top pair of castors to contact the Ambulance, or other vehicle's, floor the weight of the whole patient occupied unit can be borne between the castors on the vehicle's floor and the attendant at the other end of the unit so that thereafter the attendant can activate a low voltage linear actuator which retracts the undercarriage into the folded or closed position thus allowing the unit to be fully pushed into the vehicle and then locked in position for travelling.
2. A Semi-Automatic Ambulance Trolley as claimed in Claim 1, wherein a wheeled bottom chassis member is connected to a top member by means of a hydraulically driven scissors linkage system.
3. A Semi-Automatic Ambulance Trolley as claimed in Claim 1 or Claim 2, wherein the driven scissor linkage means and the retracting undercarriage means are one and the same.
4. A Semi-Automatic Ambulance Trolley as claimed in any preceding claim including safety rails and, with the unit at the desired height, these rails can be lowered to permit patient transfer to an Hospital's equipment.
5. A Semi-Automatic Ambulance Trolley as claimed in any preceding claim which is made from metal, plastics or composite material, or from a combination of these materials but more conveniently aluminium tube.
GB9513053A 1995-06-27 1995-06-27 Ambulance trolley with powered scissor linkage Withdrawn GB2302672A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9513053A GB2302672A (en) 1995-06-27 1995-06-27 Ambulance trolley with powered scissor linkage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9513053A GB2302672A (en) 1995-06-27 1995-06-27 Ambulance trolley with powered scissor linkage

Publications (3)

Publication Number Publication Date
GB2302672A9 GB2302672A9 (en)
GB9513053D0 GB9513053D0 (en) 1995-08-30
GB2302672A true GB2302672A (en) 1997-01-29

Family

ID=10776732

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9513053A Withdrawn GB2302672A (en) 1995-06-27 1995-06-27 Ambulance trolley with powered scissor linkage

Country Status (1)

Country Link
GB (1) GB2302672A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2348359A (en) * 1999-03-30 2000-10-04 Ferno Vertically adjustable stretcher apparatus
WO2006036980A1 (en) * 2004-09-24 2006-04-06 Stryker Corporation Ambulance cot and hydraulic elevating mechanism therefor
US7521891B2 (en) 2004-06-14 2009-04-21 Fernon-Washington, Inc. Charging system for recharging a battery of powered lift ambulance cot with an electrical system of an emergency vehicle
US7996939B2 (en) 2004-06-14 2011-08-16 Ferno-Washington, Inc. Electro-hydraulically powered lift ambulance cot
USRE44884E1 (en) 2004-09-24 2014-05-13 Stryker Corporation Ambulance cot with pinch safety feature
CN105616078A (en) * 2016-03-31 2016-06-01 粟广欢 Lifting platform in ambulance

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2348359A (en) * 1999-03-30 2000-10-04 Ferno Vertically adjustable stretcher apparatus
GB2380402A (en) * 1999-03-30 2003-04-09 Ferno Vertically adjustable stretcher
GB2380402B (en) * 1999-03-30 2003-06-18 Ferno Stretchers
GB2348359B (en) * 1999-03-30 2003-06-18 Ferno Stretchers
US7521891B2 (en) 2004-06-14 2009-04-21 Fernon-Washington, Inc. Charging system for recharging a battery of powered lift ambulance cot with an electrical system of an emergency vehicle
US7996939B2 (en) 2004-06-14 2011-08-16 Ferno-Washington, Inc. Electro-hydraulically powered lift ambulance cot
JP2008514301A (en) * 2004-09-24 2008-05-08 ストライカー・コーポレーション Ambulance simple bed and hydraulic lifting mechanism therefor
WO2006036980A1 (en) * 2004-09-24 2006-04-06 Stryker Corporation Ambulance cot and hydraulic elevating mechanism therefor
US7725968B2 (en) 2004-09-24 2010-06-01 Stryker Corporation Ambulance cot with retractable head section and control system therefor
AU2005289559B2 (en) * 2004-09-24 2010-07-08 Stryker Corporation Ambulance cot and hydraulic elevating mechanism therefor
CN101060824B (en) * 2004-09-24 2011-08-10 斯特赖克公司 Ambulance cot and hydraulic elevating mechanism therefor
US8056950B2 (en) 2004-09-24 2011-11-15 Stryker Corporation In-ambulance cot shut-off device
USRE44884E1 (en) 2004-09-24 2014-05-13 Stryker Corporation Ambulance cot with pinch safety feature
CN102389353B (en) * 2004-09-24 2015-05-13 斯特赖克公司 Ambulance cot with pinch safety feature
CN105616078A (en) * 2016-03-31 2016-06-01 粟广欢 Lifting platform in ambulance

Also Published As

Publication number Publication date
GB9513053D0 (en) 1995-08-30
GB2302672A9 (en)

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Legal Events

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