EP0198946A2 - Dispositif d'interruption du mouvement de descente pour mécanisme de levage d'appareils de levage pour malades - Google Patents

Dispositif d'interruption du mouvement de descente pour mécanisme de levage d'appareils de levage pour malades Download PDF

Info

Publication number
EP0198946A2
EP0198946A2 EP85111455A EP85111455A EP0198946A2 EP 0198946 A2 EP0198946 A2 EP 0198946A2 EP 85111455 A EP85111455 A EP 85111455A EP 85111455 A EP85111455 A EP 85111455A EP 0198946 A2 EP0198946 A2 EP 0198946A2
Authority
EP
European Patent Office
Prior art keywords
bracket
displacement member
motor
sitting
obstacle
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
EP85111455A
Other languages
German (de)
English (en)
Other versions
EP0198946B1 (fr
EP0198946A3 (en
Inventor
Leif Bertil Sonesson
Anders Lennart Sandell
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.)
Arjo IP Holding AB
Original Assignee
Arjo Hospital Equipment AB
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 Arjo Hospital Equipment AB filed Critical Arjo Hospital Equipment AB
Priority to AT85111455T priority Critical patent/ATE43493T1/de
Publication of EP0198946A2 publication Critical patent/EP0198946A2/fr
Publication of EP0198946A3 publication Critical patent/EP0198946A3/en
Application granted granted Critical
Publication of EP0198946B1 publication Critical patent/EP0198946B1/fr
Expired legal-status Critical Current

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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
    • A61G7/10—Devices for lifting patients or disabled persons, e.g. special adaptations of hoists thereto
    • A61G7/1013—Lifting of patients by
    • A61G7/1019—Vertical extending columns or mechanisms
    • 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
    • A61G7/10—Devices for lifting patients or disabled persons, e.g. special adaptations of hoists thereto
    • A61G7/104—Devices carried or supported by
    • A61G7/1046—Mobile bases, e.g. having 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
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/10—Devices for lifting patients or disabled persons, e.g. special adaptations of hoists thereto
    • A61G7/1049—Attachment, suspending or supporting means for patients
    • A61G7/1057—Supported platforms, frames or sheets for patient in lying position
    • 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
    • A61G7/10—Devices for lifting patients or disabled persons, e.g. special adaptations of hoists thereto
    • A61G7/1049—Attachment, suspending or supporting means for patients
    • A61G7/1059—Seats
    • 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
    • A61G7/10—Devices for lifting patients or disabled persons, e.g. special adaptations of hoists thereto
    • A61G7/1063—Safety means
    • A61G7/1065—Safety means with electronic monitoring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F17/00—Safety devices, e.g. for limiting or indicating lifting force
    • 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
    • A61G2203/00—General characteristics of devices
    • A61G2203/70—General characteristics of devices with special adaptations, e.g. for safety or comfort
    • A61G2203/72—General characteristics of devices with special adaptations, e.g. for safety or comfort for collision prevention

Definitions

  • the present invention relates to a device for interrupting lowering movements of motor-driven hoisting gears at patient--lifting units, whereby the hoisting gear comprises an anchoring member through which the hoisting gear is fixed onto a frame or similar, and a displacement member which is connected to the anchoring member and raisable and lowerable in relation thereto by means of a motor, whereby sitting and/or lying means for patients is mounted on the displacement member through a bracket.
  • the object of the present invention is to eliminate this problem by means of a simple and reliable device. This is arrived at by providing the device with the characterizing features of claim 1.
  • the device according to the invention provides an automatic lowering stop by sensing the change of position occuring when the sitting and/or lying means runs into an obstacle while the displacement member of the hoisting gear proceeds further downwards.
  • the lowering movement is automatically interrupted before any serious risks of squeezing or of instability and tipping occur.
  • the patient-transporting waggon 1 illustrated in the drawings is adapted for transporting patients between various locations, e.g. to or from a bed 2.
  • the patient-transporting waggon 1 has a transportable frame 3 with four wheels 4.
  • a hoisting gear 5 (a so called hoisting column) is mounted on the frame 3 and a seat 6 for the patient is provided on top of the hoisting gear.
  • the hoisting gear 5 is adapted to raise the seat 6 to such a level that it may be located above the bed 2 and lowered thereto for transferring a patient from or to the seat.
  • the hoisting gear 5 comprises an anchoring member 7 which is fixed onto the frame 3 by means of a screw joint 8.
  • the hoisting gear 5 also comprises a displacement member 9 which by cooperation with the anchoring member 7 is movable in vertical direction.
  • the anchoring member 7 comprises a sleeve 10 with an inner threaded portion 11 and the displacement member 9 comprises a threaded bar-12 projecting downwards into the sleeve.
  • balls 13 are provided in such a way that the sleeve 10, bar 12 and balls 13 together define a so called ball screw 14.
  • the upper end portion of the threaded bar 12 projects upwardly into a gearbox 15 forming part of the displacement member 9 and is provided with a pinion 16.
  • the gearbox 15 is assembled with an electric motor 17, the driveshaft 18 of which is provided with a pinion 19 meshing with the pinion 16 of the gear box.
  • the pinions 16, 19 are adapted to, during shifting, transfer the driving movement of the motor 17 to the threaded bar 12 for rotation thereof, i.e. to drive the ball screw 14. Since the motor 17 rotates the bar 12 in one direction relative to the sleeve 10, the displacement member 9 is moved upwards,and by rotating the bar in the opposite direction, the displacement member is moved downwards.
  • a downward sleeve 20 mounted on the gearbox 15 surrounds the ball screw 14.
  • a bracket 21 for the seat 6 and the arm and back support 22 of the patient-lifting unit is mounted on the displacement member 9.
  • the bracket 21 consists of a box-like upper portion 21a and a cylindrical sleeve 21b projecting downward therefrom.
  • a yoke 27 (only schematically shown in the drawings) is provided on the cylindrical sleeve 21b for mounting the seat 6 and arm and/or back support 22.
  • the box-like part 21a of the bracket 21 is adapted to provide a hood for the electric motor 17 and a battery box 23 with a battery is mounted thereon, said battery being connected to the motor for driving thereof.
  • the frame 3 is provided with an upwardly directed cylindrical guide sleeve 25 with a laterally-extending guiding arm 26 on top thereof.
  • the sleeve 21b of the bracket 21 surrounds the guide sleeve 25 and provides a lateral passage 28 for the guiding arm 26. While the guiding arm 26 projects into the passage 28, it prevents the sleeve 21b and thus, the bracket 21 from rotating relative to the frame 3 during raising and lowering.
  • the gearbox 15 forming part of the displacement member is on top provided with an upwardly directed fork 29 with a shaft journal 30 extending horizontally between two shanks defining the fork.
  • the box-like part 21a of the bracket 21 has a horizontally directed arm 31 with a long-hole 32 for the shaft journal 30.
  • the arm 31 projects in between the shanks of the fork 29 such that the shaft journal 30 extends through the long-hole 32 in the arm, whereby the arm and the bracket 21 with their various parts will hang on the displacement member 9 through the shaft journal.
  • the long-hole 32 is vertically directed and the length thereof about twice the diameter of the shaft journal 30. Normally, the upper edge of the long-hole will engage the shaft journal 30 (see fig. 1), but the long-hole permits the shaft journal to move downwards in the hole until it engages the lower edge of the long-hole (see fig. 3).
  • the displacement member 9 is movable relative to the bracket 21 or vice versa and changes of position between said members 9, 21 are sensed by sensing and control means 33 forming part of the electric circuit 34 (see fig. 4) of the motor 17 and adapted to disconnect the circuit for automatically interrupting the lowering movement of the hoisting gear 5 when the seat 6 bumps into the bed 2 or any other obstruction.
  • the sensing and control means 33 is mounted on the bracket 21 above the gearbox 15 and it has a protruding contact relay 35.
  • the sensing and control means 33 is located on the bracket 21 relative to the long-hole 32 in the arm 31 such that the contact realy 35 thereof is depressed by the gearbox 15 when the upper edge of the long-hole engages the shaft journal 30, i.e. when the bracket is located in the normal position relative to the displacement member 9 indicated in fig. 1.
  • the contact relay 35 closes its portion 36 of the circuit 34 of the motor 17 such that the bracket 21 with associated seat 6 is lowered by pressing the operating unit 37 located on the bracket from neutral position O to position N (shown with solid lines in fig. 4) or raised by pressing the operating unit from neutral position 0 to position U (shown with dashed and dotted lines in fig. 4).
  • the sensing and control means 33 controls the motor 17 to stop automatically.
  • the motor 17 will drive the displacement memeber 9 a distance further downwards, because the long-hole 32 in the arm 31 will allow it until the shaft journal 30 reaches the lower edge of the hole (see fig. 3).
  • spring means may press out the contact relay 35 to a position (position B in fig. 4 shown with dashed and dotted lines ) at which it disconnects its portion 36 of the circuit 34 to the motor 17, whereby the motor stops and the lowering movement is automatically interrupted.
  • Means 39 is provided between the displacement member 9 and the bracket 21 and adapted to apply an upwardly directed force to the bracket for reducing the pressure with which the seat 6, because of the weight of the seat and bracket, loads the bed 2 when the seat reaches it during lowering.
  • an upwardly directed force to the bracket for reducing the pressure with which the seat 6, because of the weight of the seat and bracket, loads the bed 2 when the seat reaches it during lowering.
  • the power generating means 39 preferably comprises a compression spring 40 which is located between the gearbox 15 and the arm 31 and this spring, or similar, affects the arm 31 with such an upwardly directed force which equalizes at least the major part, preferably about 90% of the force with which the bracket 21 and the members mounted thereon, because of their weight, load the compression spring 40 in downwards direction.
  • the upwardly directed force of the compression spring 40 may not exceed the downward force of the bracket 21 and associated members on said spring, since the spring otherwise will move the bracket upwards to its upper position (see fig. 3) relative to the displacement member 9, whereby the sensing and controlling means 33 disconnects its portion 36 of the circuit 34 and render it impossible to lower the bracket 21 with its seat 6.
  • the device illustrated in the drawings and described above may vary within the scope of the following claims without departing from the essential function thereof, i.e. to sense, by means of a simple sensing and control device, those changes of position permitted by a simple movement permitting device and in dependence thereon control the motor to automatically inerrupt lowering of the seat when said seat during lowering bumps into an obstacle of any kind, e.g. a bed.
  • the movement permitting device may be designed in a totally different manner than as shown (e.g. a long-hole may instead be provided in the displacement member and a shaft journal extending therethrough may form a part of the bracket).
  • the sensing and control means may also be designed in quite a different way and located in another position.
  • the hoisting gear of the patient-lifting unit may also vary in its design within certain limits and if a ball screw device is used, said device may be provided with a brake device preventing the seat from being lowered during overload conditions.
  • the bracket for the seat may also vary in its shape and location and the seat may be either simple sitting means or sitting and/or lying means for the patient.
  • the means affecting the bracket in upwards direction may consist of one or more springs or other types of power generating means. Eventually, such means may be adjustable with regard to the rating of the force generated thereby.
  • the power generating means may also be located in another position than indicated above and in the drawings. It is preferable but not absolutely necessary to design the bracket with a box-like part and provide various devices such as the relative movements permitting device and/or the sensing and control means and/or the motor inside said box-like part in a protective manner.
  • the patient-lifting unit with the device according to the invention may be used in other applications than for patient-transporting waggons of the described and illustrated type.
EP85111455A 1985-04-26 1985-09-11 Dispositif d'interruption du mouvement de descente pour mécanisme de levage d'appareils de levage pour malades Expired EP0198946B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85111455T ATE43493T1 (de) 1985-04-26 1985-09-11 Ausschaltungsvorrichtung fuer die abbewegung von hebegetrieben fuer krankenhebeeinrichtungen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8502026A SE442948B (sv) 1985-04-26 1985-04-26 Anordning for att stoppa nedsenkningsrorelser hos motordrivna lyftaggregat
SE8502026 1985-04-26

Publications (3)

Publication Number Publication Date
EP0198946A2 true EP0198946A2 (fr) 1986-10-29
EP0198946A3 EP0198946A3 (en) 1987-12-02
EP0198946B1 EP0198946B1 (fr) 1989-05-31

Family

ID=20359984

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85111455A Expired EP0198946B1 (fr) 1985-04-26 1985-09-11 Dispositif d'interruption du mouvement de descente pour mécanisme de levage d'appareils de levage pour malades

Country Status (4)

Country Link
EP (1) EP0198946B1 (fr)
AT (1) ATE43493T1 (fr)
DE (1) DE3570592D1 (fr)
SE (1) SE442948B (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0267888A2 (fr) * 1986-11-10 1988-05-18 Unbescheiden GmbH Dispositif de levage pour patients
EP0273888A2 (fr) * 1986-12-29 1988-07-06 Unbescheiden GmbH Dispositif de levage pour patient
WO1990001916A1 (fr) * 1988-08-31 1990-03-08 Pedersen Hvidtfelt Hesselund F Equipement de securite pour appareil de levage de patients avec systeme de levage electrique
FR2727296A1 (fr) * 1994-11-30 1996-05-31 Dubuis Agencement de securite pour l'entrainement motorise d'une partie mobile par rapport a une partie fixe et meuble qui en est equipe
EP0945115A2 (fr) * 1998-03-27 1999-09-29 Parker Bath Ltd. Appareil de levage
US6397409B1 (en) 2000-04-14 2002-06-04 Freedom Bath, Inc. Bath lifting system
US6643861B2 (en) 2000-04-14 2003-11-11 Freedom Bath, Inc. Bath lifting system
WO2006106083A1 (fr) * 2005-04-06 2006-10-12 Siemens Aktiengesellschaft Protection d'appareil pour unite de levage
GB2425361A (en) * 2005-04-09 2006-10-25 Smarta Systems Ltd Monitoring an apparatus for raising or lowering a person
WO2011077369A1 (fr) * 2009-12-22 2011-06-30 Invacare International Sàrl Procédé permettant de sécuriser l'opération de levage d'un siège de fauteuil roulant et dispositif de levage pour un siège de fauteuil roulant
KR20190036153A (ko) * 2017-09-27 2019-04-04 한국과학기술연구원 환자 이송 장치

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110812060A (zh) * 2019-10-29 2020-02-21 深圳市迈康信医用机器人有限公司 电动升降移位机

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2483894A (en) * 1946-06-29 1949-10-04 Kelley Koett Mfg Co Lifting device
US2688410A (en) * 1949-08-27 1954-09-07 George B Nelson Device for transporting bedridden patients
US2891256A (en) * 1954-05-19 1959-06-23 Scully Vincent Apparatus for lifting and transporting patients
US4176826A (en) * 1978-07-03 1979-12-04 General Electric Company Safety catch apparatus for a suspension system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2483894A (en) * 1946-06-29 1949-10-04 Kelley Koett Mfg Co Lifting device
US2688410A (en) * 1949-08-27 1954-09-07 George B Nelson Device for transporting bedridden patients
US2891256A (en) * 1954-05-19 1959-06-23 Scully Vincent Apparatus for lifting and transporting patients
US4176826A (en) * 1978-07-03 1979-12-04 General Electric Company Safety catch apparatus for a suspension system

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0267888A2 (fr) * 1986-11-10 1988-05-18 Unbescheiden GmbH Dispositif de levage pour patients
EP0267888A3 (en) * 1986-11-10 1989-04-12 Aktiebolaget Electrolux Patient lifting device
EP0273888A2 (fr) * 1986-12-29 1988-07-06 Unbescheiden GmbH Dispositif de levage pour patient
EP0273888A3 (en) * 1986-12-29 1989-04-05 Aktiebolaget Electrolux Patient lifting device
US4875555A (en) * 1986-12-29 1989-10-24 Aktiebolaget Electrolux Patient lifting device
WO1990001916A1 (fr) * 1988-08-31 1990-03-08 Pedersen Hvidtfelt Hesselund F Equipement de securite pour appareil de levage de patients avec systeme de levage electrique
FR2727296A1 (fr) * 1994-11-30 1996-05-31 Dubuis Agencement de securite pour l'entrainement motorise d'une partie mobile par rapport a une partie fixe et meuble qui en est equipe
EP0945115A2 (fr) * 1998-03-27 1999-09-29 Parker Bath Ltd. Appareil de levage
EP0945115A3 (fr) * 1998-03-27 2000-02-23 Parker Bath Ltd. Appareil de levage
US6643860B2 (en) 2000-04-14 2003-11-11 Freedom Bath, Inc. Bath lifting system
US6397409B1 (en) 2000-04-14 2002-06-04 Freedom Bath, Inc. Bath lifting system
US6643861B2 (en) 2000-04-14 2003-11-11 Freedom Bath, Inc. Bath lifting system
WO2006106083A1 (fr) * 2005-04-06 2006-10-12 Siemens Aktiengesellschaft Protection d'appareil pour unite de levage
US7971295B2 (en) 2005-04-06 2011-07-05 Siemens Aktiengesellschaft Protection for a lifting unit
GB2425361A (en) * 2005-04-09 2006-10-25 Smarta Systems Ltd Monitoring an apparatus for raising or lowering a person
GB2425361B (en) * 2005-04-09 2009-09-02 Smarta Systems Ltd Monitoring system
US8085146B2 (en) 2005-04-09 2011-12-27 Joerns Healthcare Limited Patient hoist with monitoring system
WO2011077369A1 (fr) * 2009-12-22 2011-06-30 Invacare International Sàrl Procédé permettant de sécuriser l'opération de levage d'un siège de fauteuil roulant et dispositif de levage pour un siège de fauteuil roulant
EP3053565A1 (fr) * 2009-12-22 2016-08-10 Invacare International Sàrl Procédé de sécurisation de l'opération de levage d'un siège de fauteuil roulant
KR20190036153A (ko) * 2017-09-27 2019-04-04 한국과학기술연구원 환자 이송 장치
KR102031057B1 (ko) 2017-09-27 2019-10-15 한국과학기술연구원 환자 이송 장치

Also Published As

Publication number Publication date
EP0198946B1 (fr) 1989-05-31
EP0198946A3 (en) 1987-12-02
SE442948B (sv) 1986-02-10
SE8502026D0 (sv) 1985-04-26
ATE43493T1 (de) 1989-06-15
DE3570592D1 (en) 1989-07-06

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