WO1990001916A1 - Safety equipment for patient hoist with electric hoist system - Google Patents

Safety equipment for patient hoist with electric hoist system Download PDF

Info

Publication number
WO1990001916A1
WO1990001916A1 PCT/DK1989/000198 DK8900198W WO9001916A1 WO 1990001916 A1 WO1990001916 A1 WO 1990001916A1 DK 8900198 W DK8900198 W DK 8900198W WO 9001916 A1 WO9001916 A1 WO 9001916A1
Authority
WO
WIPO (PCT)
Prior art keywords
hoist
hoist arm
joint
patient
arm part
Prior art date
Application number
PCT/DK1989/000198
Other languages
French (fr)
Inventor
Hvidtfelt Hesselund Finn Pedersen
Original Assignee
Pedersen Hvidtfelt Hesselund F
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 Pedersen Hvidtfelt Hesselund F filed Critical Pedersen Hvidtfelt Hesselund F
Publication of WO1990001916A1 publication Critical patent/WO1990001916A1/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/10—Devices for lifting patients or disabled persons, e.g. special adaptations of hoists thereto
    • A61G7/1013—Lifting of patients by
    • A61G7/1017—Pivoting arms, e.g. crane type 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
    • A61G7/1063—Safety means
    • 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
    • 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
    • A61G7/1073—Parts, details or accessories
    • A61G7/1074—Devices foldable for storage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
    • B66C23/36—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
    • B66C23/48—Manually-movable jib cranes for use in workshops
    • 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
    • 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
    • A61G7/1061—Yokes

Definitions

  • Power is supplied by a battery or transformer. Relays are provided for high voltages, and there are smaller contact- or pressure systems for operating relays as well as emergency switches for supply voltages. All these systems entail the possibility of errors or faulty operation. In case of an error or faulty operation there is a danger of persons, who are not themselves able to take avoiding action, being clamped. Since the forces in these spindle motors are so high, injuries to persons may be serious. The operating personnel requires such extensive knowledge about the electrical equipment of the patient hoists and their operation as to greatly increase the risk of faulty operation.
  • the patient hoist according to the invention has the special
  • the hoist arm with this division being capable of moving only in one direction. If the arm is lowered towards the person or object, irrespective of whether such lowering takes place deliberately or as the result of a technical or operational error, the division of the arm makes it impossible for pressure to be applied by more than the arm and possibly the weight of the harness and fittings.
  • a simple embodiment consists in dividing the hoist arm in such a way that it remains loose and movable in one direction.
  • the lifting point of the spindle motor is located directly before the movable joint.
  • the movable joint in the hoist arm has a space-saving effect, which is extremely advantageous as regards transportation of the hoist, both when despatching and transporting it to other locations where it is to be used.
  • the drawing shows an electric patient hoist according to the
  • drawing 1 shows an electric patient hoist seen from the side.
  • FIG. 1 shows the machine in the folded state.
  • Drawing 2 Fig. 2 shows the detailed safety contact installed in joint A.
  • Drawing 3 shows the patient hoist seen from the side with a stop below the hoist arm and the motor in three positions.
  • the patient hoist consists of an undercarriage F or a socket I for stationary mounting, column D and spindle motor E, which is attached to column D and to hoist arm part C.
  • the hoist arm comprises three parts: the inner hoist arm part C, hinged to column D by means of joint J, and the outer hoist arm part B, mounted on hoist arm part C via joint A.
  • Spindle motor E is mounted on hoist arm part C, directly in front of joint A, an emergency stop H and an operating unit G being likewise provided.
  • a safety contact is installed in hoist arm part C at joint A, as a result of which the control circuit of operating unit G cuts the control current for lowering the hoist arm if hoist arm part B at joint A does not activate circuit-breaker K.
  • Drawing 3 shows motor E in three positions
  • Position 3 shows hoist arm part C in the lowest position. This position is reached if there is a fault in the electrical system for circuit-breaker K or if a circuit-breaker K is not fitted. Lowering to the lowest position therefore results only in further movement about part A.

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)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Invalid Beds And Related Equipment (AREA)

Abstract

Safety equipment for patient hoist with electric hoist system, which is provided with joint (A) fitted in hoist arms (B) and (C). In joint (A) is installed a safety circuit-breaker. The joint installed in the hoist arm secures the equipment against pressure or damage to persons or objects, in case of operating errors or errors in the remaining electrical equipment.

Description

Safety equipment for patient hoist with electric hoist system
The invention relates to an electrically operated patient hoist comprising a column, a hoist arm and a spindle motor, which is firmly attached to the floor or mounted on an undercarriage with wheels.
Patient hoists with electric hoist system, comprising a column, hoist arm and a spindle motor are known.
A patient hoist is needed in order to prevent personnel in
institutions from suffering a strained back when lifting a person. The patient hoist avoids this with the aid of a hoist arm which can be lowered over the person, whereupon a strap is placed about the person and the latter is lifted with the aid of the hoist arm. Since the hoist arm is movable, exerts a pull of about 600 kg and can be lowered over the person, a situation may arise in which the arm, instead of lifting about 600 kg, begins to exert a pressure of about 600 kg so as to crush the person under the hoist arm. Various electric systems are used in order to operate patient hoists:
Power is supplied by a battery or transformer. Relays are provided for high voltages, and there are smaller contact- or pressure systems for operating relays as well as emergency switches for supply voltages. All these systems entail the possibility of errors or faulty operation. In case of an error or faulty operation there is a danger of persons, who are not themselves able to take avoiding action, being clamped. Since the forces in these spindle motors are so high, injuries to persons may be serious. The operating personnel requires such extensive knowledge about the electrical equipment of the patient hoists and their operation as to greatly increase the risk of faulty operation.
The patient hoist according to the invention has the special
characteristic that its hoist arm is divided, the hoist arm with this division being capable of moving only in one direction. If the arm is lowered towards the person or object, irrespective of whether such lowering takes place deliberately or as the result of a technical or operational error, the division of the arm makes it impossible for pressure to be applied by more than the arm and possibly the weight of the harness and fittings.
As a result thereof it is not possible for persons or objects to be harmed if lowering takes place deliberately or inadvertently. A simple embodiment consists in dividing the hoist arm in such a way that it remains loose and movable in one direction. The lifting point of the spindle motor is located directly before the movable joint. However, according to the invention, it may be advisable to provide, in the joint of the hoist arm, a circuit-breaker for the operating current, and such an addition will further reduce the possibility of an operating fault. At the same time, the movable joint in the hoist arm has a space-saving effect, which is extremely advantageous as regards transportation of the hoist, both when despatching and transporting it to other locations where it is to be used.
The drawing shows an electric patient hoist according to the
invention, in which
drawing 1 shows an electric patient hoist seen from the side.
Drawing 2, Fig. 1 shows the machine in the folded state.
Drawing 2 Fig. 2 shows the detailed safety contact installed in joint A.
Drawing 3 shows the patient hoist seen from the side with a stop below the hoist arm and the motor in three positions. As shown in drawing 1, the patient hoist consists of an undercarriage F or a socket I for stationary mounting, column D and spindle motor E, which is attached to column D and to hoist arm part C. The hoist arm comprises three parts: the inner hoist arm part C, hinged to column D by means of joint J, and the outer hoist arm part B, mounted on hoist arm part C via joint A. Spindle motor E is mounted on hoist arm part C, directly in front of joint A, an emergency stop H and an operating unit G being likewise provided. As shown in drawing 2 Fig. 2, a safety contact is installed in hoist arm part C at joint A, as a result of which the control circuit of operating unit G cuts the control current for lowering the hoist arm if hoist arm part B at joint A does not activate circuit-breaker K.
Drawing 3 shows motor E in three positions,
position 1 with hoist arm parts C, A and B prior to reaching the stop, position 2 with hoist arm part B against stop L, hoist arm part C being in this case lower than part B, as a result of which joint A is opened so that circuit-breaker K is no longer activated, thus causing spindle motor E to come to a standstill.
Position 3 shows hoist arm part C in the lowest position. This position is reached if there is a fault in the electrical system for circuit-breaker K or if a circuit-breaker K is not fitted. Lowering to the lowest position therefore results only in further movement about part A.

Claims

C l a i m s
1. Safety equipment for electric patient hoist, comprising
a column (D), spindle motor (E) attached to column (D) and a hoist arm emanating from column (D), an operating unit (G) and an emergency stop (H), the entire assembly being mounted on an undercarriage (F) or a socket (I), c h a r a c t e r i s e d in that the hoist arm is subdivided into two parts, an inner hoist arm part (C) and an outer hoist arm part (B), with the aid of a joint (A) mounted directly at the rear of the spindle motor's attachment to hoist arm part (C), so that the inner hoist arm part (B) can, in relation to the inner hoist arm part (C), move only upward, about joint (A).
2. Safety equipment for patient hoists according to claim 1,
c h a r a c t e r i s e d in that a safety circuit-breaker (K) is installed in joint (A) of hoist arms (C) and (B), so that if circuit breaker (K) is activated by hoist arm part (B), the control current circuit, by which operating unit (G) causes lowering of hoist arm (C), (B), is closed.
PCT/DK1989/000198 1988-08-31 1989-08-22 Safety equipment for patient hoist with electric hoist system WO1990001916A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK483788A DK483788A (en) 1988-08-31 1988-08-31 SAFETY EQUIPMENT FOR PERSONAL PROMISES WITH ELECTRIC LIFT
DK4837/88 1988-08-31

Publications (1)

Publication Number Publication Date
WO1990001916A1 true WO1990001916A1 (en) 1990-03-08

Family

ID=8137084

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK1989/000198 WO1990001916A1 (en) 1988-08-31 1989-08-22 Safety equipment for patient hoist with electric hoist system

Country Status (2)

Country Link
DK (1) DK483788A (en)
WO (1) WO1990001916A1 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0555198A1 (en) * 1992-02-03 1993-08-11 Handi-Move Safety device for an apparatus provided for lifting and lowering loads
AU657051B2 (en) * 1992-06-06 1995-02-23 Arjo Limited Invalid hoist
WO1995035083A1 (en) * 1994-06-20 1995-12-28 Care Dimension A/S A hoist or lift for lifting a disabled or handicapped person
US6289534B1 (en) * 1998-07-31 2001-09-18 Hill-Rom Services, Inc. Patient lift
WO2011058445A1 (en) * 2009-11-16 2011-05-19 Toyota Jidosha Kabushiki Kaisha Transfer supporting device
EP2364701A1 (en) 2005-12-20 2011-09-14 Cenestra, Llc Omega-3 fatty acid formulations
CN102551976A (en) * 2010-10-14 2012-07-11 财团法人工业技术研究院 Personnel hanging and moving device and personnel hanging and moving service dispatching system
EP3355846A4 (en) * 2015-10-02 2019-11-27 Easy and Light Mobility Pty Ltd Mobility aid
US11786430B2 (en) 2019-02-11 2023-10-17 Liko Research & Development Ab Patient lift and sling having wireless communication

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0198946A2 (en) * 1985-04-26 1986-10-29 Arjo Hospital Equipment Ab Device for interrupting lowering movements of motor-driven hoisting gears at patient-lifting units
EP0273888A2 (en) * 1986-12-29 1988-07-06 Unbescheiden GmbH Patient lifting device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0198946A2 (en) * 1985-04-26 1986-10-29 Arjo Hospital Equipment Ab Device for interrupting lowering movements of motor-driven hoisting gears at patient-lifting units
EP0273888A2 (en) * 1986-12-29 1988-07-06 Unbescheiden GmbH Patient lifting device

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0555198A1 (en) * 1992-02-03 1993-08-11 Handi-Move Safety device for an apparatus provided for lifting and lowering loads
BE1005599A3 (en) * 1992-02-03 1993-11-16 Handi Move SAFETY DEVICE FOR A DEVICE THAT CHARGES OR RAISING drop.
AU657051B2 (en) * 1992-06-06 1995-02-23 Arjo Limited Invalid hoist
WO1995035083A1 (en) * 1994-06-20 1995-12-28 Care Dimension A/S A hoist or lift for lifting a disabled or handicapped person
US6289534B1 (en) * 1998-07-31 2001-09-18 Hill-Rom Services, Inc. Patient lift
EP2364701A1 (en) 2005-12-20 2011-09-14 Cenestra, Llc Omega-3 fatty acid formulations
WO2011058445A1 (en) * 2009-11-16 2011-05-19 Toyota Jidosha Kabushiki Kaisha Transfer supporting device
CN102551976A (en) * 2010-10-14 2012-07-11 财团法人工业技术研究院 Personnel hanging and moving device and personnel hanging and moving service dispatching system
EP3355846A4 (en) * 2015-10-02 2019-11-27 Easy and Light Mobility Pty Ltd Mobility aid
US11654067B2 (en) 2015-10-02 2023-05-23 Easy and Light Mobility Pty Ltd Mobility aid
US11786430B2 (en) 2019-02-11 2023-10-17 Liko Research & Development Ab Patient lift and sling having wireless communication

Also Published As

Publication number Publication date
DK483788A (en) 1990-03-01
DK483788D0 (en) 1988-08-31

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