EP2248500A2 - Dispositif d'entraînement auxiliaire pour un dispositif manuel mobile destiné au transport d'un lit de patients - Google Patents

Dispositif d'entraînement auxiliaire pour un dispositif manuel mobile destiné au transport d'un lit de patients Download PDF

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Publication number
EP2248500A2
EP2248500A2 EP10158823A EP10158823A EP2248500A2 EP 2248500 A2 EP2248500 A2 EP 2248500A2 EP 10158823 A EP10158823 A EP 10158823A EP 10158823 A EP10158823 A EP 10158823A EP 2248500 A2 EP2248500 A2 EP 2248500A2
Authority
EP
European Patent Office
Prior art keywords
wheel
auxiliary drive
drive device
motor
sensor
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
EP10158823A
Other languages
German (de)
English (en)
Other versions
EP2248500A3 (fr
EP2248500B1 (fr
Inventor
Bernhard Katzenstein
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.)
Maquet GmbH
Original Assignee
Maquet GmbH
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 Maquet GmbH filed Critical Maquet GmbH
Priority to PL10158823T priority Critical patent/PL2248500T3/pl
Publication of EP2248500A2 publication Critical patent/EP2248500A2/fr
Publication of EP2248500A3 publication Critical patent/EP2248500A3/fr
Application granted granted Critical
Publication of EP2248500B1 publication Critical patent/EP2248500B1/fr
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
    • A61G13/00—Operating tables; Auxiliary appliances therefor
    • A61G13/10—Parts, details or accessories
    • A61G13/104—Adaptations for table mobility, e.g. arrangement of 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
    • A61G2203/00—General characteristics of devices
    • A61G2203/30—General characteristics of devices characterised by sensor 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
    • A61G2203/00—General characteristics of devices
    • A61G2203/30—General characteristics of devices characterised by sensor means
    • A61G2203/36—General characteristics of devices characterised by sensor means for motion

Definitions

  • the invention relates to an auxiliary drive device for a manually moving device for transporting a patient support surface. Furthermore, the invention relates to a manually moving, intended for transporting a patient support surface device, which is equipped with such an auxiliary drive device.
  • a mobile operating table has a patient support surface which is fixedly connected to a foot rests. On the floor facing the end of the foot rests are mounted with which the nursing staff can move the operating table.
  • Operating table systems typically include a fixed columnar fixture in the operating room upon which to place a replaceable patient support surface on which the patient resides.
  • the patient support surface is usually pushed onto a transport rack in the operating room.
  • the handling forces to be applied depend on the weight of the patient, the weight of the patient support surface, the friction occurring in the rollers, the diameter of the rollers, the hardness of the roller covering and the nature of the floor.
  • the caregiver desires appropriate assistance to reduce to a tolerable level the handling forces needed to accelerate the unit formed by the patient, the patient support surface and the caddy or mobile operating table. Legislation has already been enacted in some countries to limit the labor force to be used by the nursing staff.
  • the object of the invention is to provide the possibility of reducing the handling forces to be exerted by the nursing staff for manually moving a device intended for transporting a patient support surface.
  • the invention provides an auxiliary drive device for a manually moving device for transporting a patient support surface.
  • This auxiliary drive device comprises a drive unit having a motor and at least one wheel rotatable by the motor, with which the device is rollably movable, a sensor for detecting the direction of movement of the manually moved device and a controller, which is designed to cause the motor, the wheel to rotate in a direction of rotation corresponding to the direction of movement detected by the sensor.
  • the auxiliary drive device according to the invention can be integrated into a device with which a patient support surface can be transported.
  • This transport device is, for example, a mobile, provided with rollers Operating table or a roller-mounted transport frame for exchangeable patient support surfaces of an operating table system.
  • the auxiliary drive device serves, in particular, to reduce as far as possible the handling forces which the nursing staff has to exert to push (or pull) the transport device.
  • the sensor automatically detects the direction of movement, i. usually the starting direction, in which the nursing staff moves the transport device.
  • the controller then controls the motor as a function of the detected movement direction so that the wheel is rotated in the direction of rotation detected the detected movement direction.
  • the auxiliary drive device automatically supports the nursing staff to move the transport device. This is especially true in the phase in which the nursing staff pushes the transport device from a standing start and accelerates. At this stage, the thrust forces to be exerted on the conveyor are greatest.
  • the auxiliary drive device By the sensor automatically detects the desired direction of movement, an actuation of the auxiliary drive device by the nursing staff is not required. This means that the nursing staff can concentrate entirely on their tasks, in particular the care of the patient, without having to pay attention to the operation of the auxiliary drive device.
  • the controller takes the motor into operation as soon as the sensor detects the direction of movement of the manually moved transport device, and overrides the motor as soon as a predetermined operating state is reached. hereby it is ensured that the auxiliary drive device in the acceleration phase, in which the nursing staff pushes the transport device, assists and thus reduces the handling forces to be exerted by the nursing staff.
  • Said predetermined operating state is preferably defined so that the engine is disabled again only after the power-consuming acceleration phase.
  • a time interval can be preset, which starts with the commissioning of the engine and after the expiration of the engine is switched off.
  • a corresponding timer is present in the controller.
  • the predetermined operating state can also be predefined by a specific speed of the transport device, after which the control causes the shutdown of the motor.
  • the senor is designed to detect the direction of rotation of the wheel for detecting the direction of movement of the transport device.
  • the sensor interacts directly with the wheel of the drive unit. If the nursing staff pushes the transport device from a stationary position, the wheel of the drive unit resting on the floor is set in rotation. By detecting the direction in which the wheel is rotated, the sensor can be easily determined whether the transport device is moved back and forth.
  • this embodiment in which the sensor detects the rotation of the wheel of the drive unit, is again only to be understood as an example.
  • the sensor detects, for example, the rotation of a roller, which on the Transport device itself is attached.
  • At least one fußbetätigbares switching element for activating the auxiliary drive device is provided.
  • the caregiver can easily activate the auxiliary drive device with the foot before it pushes the transport device.
  • the sensor and the controller are effectively switched, so that the controller, as soon as it receives from the sensor a corresponding signal indicative of the direction of movement, can start the motor to rotate the wheel in the desired direction and thus Nursing staff to facilitate the sliding of the transport device.
  • the switching element is actuated with the foot, the hands remain free to push the transport device.
  • This activation of the auxiliary drive device also saves energy because the device components are powered only when needed.
  • the wheel is rotatably mounted about an axis which is arranged transversely to a main movement direction of the transport device.
  • the wheel has the function of a so-called track roller.
  • the nursing staff can thus rank the transport device more easily since forces acting transversely to the main movement direction, which are required, for example, for cornering, are absorbed by the track roller.
  • the nursing staff can thus maintain its sliding position at the head end or foot end of the patient support surface during maneuvering.
  • the auxiliary drive device preferably has an exchangeable energy store.
  • the auxiliary drive device has a mechanism for raising and lowering the wheel. If the nursing staff does not require any assistance in pushing or pulling the transport device, then in this embodiment it can lift the wheel of the drive unit off the ground, as a result of which it becomes ineffective. The nursing staff can then handle the transport device in the usual way. In particular, when the wheel is lifted, the transport device, if its rollers (as usual) are freely pivotable, can also move transversely to the main direction of movement.
  • the engine is preferably coupled to the wheel via a single-stage transmission.
  • a single stage transmission i. a transmission that has only a fixed ratio and, for example, is easy to implement with two interlocking teeth
  • a drive train can be easily formed, which prevents mechanical locking of the wheel.
  • This embodiment also prevents mechanical locking in the non-driving state of the wheel, i. in a state in which the engine is put out of operation by the controller (for example, after the acceleration phase) and the wheel rotating by pushing the transport means alone performs the function of a track roller.
  • a drive train of the aforementioned type can be realized for example by the fact that the wheel has a spur gear toothing, which engages with a drive pinion of the engine is located. If it is ensured that the rotor inertia of the motor, which is given when using, for example, an electric motor by means of its magnetic induction, is sufficiently low, then mechanical blocking in the non-driving state of the wheel is reliably prevented.
  • the engine is gearless coupled to the wheel.
  • a direct drive can be designed in the form of a wheel hub motor, which is installed directly in the wheel and at the same time carries the wheel hub.
  • exemplary embodiment presented below is based on the application of an auxiliary drive device according to the invention to a transport frame directed, which serves to transport a removable patient storage area.
  • the transport frame 10 has two mutually parallel longitudinal beams 12 and 14, at the ends of rotatable rollers 16 to 22 are mounted.
  • the rollers 16 to 22 are each freely pivotable about a vertical pivot axis, not shown.
  • the nursing staff pushes the caddy 10, this runs on the rollers 16 to 22.
  • the main sliding direction is parallel to the longitudinal beams 12 and 14.
  • Between the two longitudinal beams 12 and 14 is a cross-connection 24, on which a housing 26 is seated.
  • an auxiliary drive device 30 is integrated.
  • the auxiliary drive device 30 has a drive unit 32 with an electric motor 34 and a drive wheel 36 rotatable by the electric motor 34.
  • the drive wheel 36 has in the present embodiment, both the function of moving the caddy 10 motorized back and forth, as well as the function of a track roller. As such, the drive wheel 36 is mounted on a fixed axle 38.
  • the drive unit 30 further comprises a drive electronics, not shown, as a controller and an exchangeable energy storage 40, such as lithium-ion battery.
  • the drive electronics are located in the housing 26. In particular, they control the electric motor 34.
  • the energy store 40 is placed on the housing 26 via a holder. The energy storage 40 supplies the electrical components of the auxiliary drive device 30 with voltage and current. If it is discharged, it can be replaced by another, charged energy storage.
  • the drive wheel 36 is mounted on a lowering mechanism 42 on the longitudinal spar 14 so that it can be lowered to the ground and from this can be lifted.
  • the lowering mechanism 42 is designed as a sliding link, which has a guided in a groove 44, foot-operated lever 46.
  • the sliding gate is formed so that the drive wheel 36 engages in its raised position. Otherwise, the drive wheel 36 is pressed by means of a spring, not shown, on the ground. So that unevenness and tolerances can be compensated. It also ensures that there is some friction between the drive wheel 36 and the floor.
  • the transport frame 10 as usual, i. also be moved transversely to the parallel to the longitudinal beams 12 and 14 extending main sliding direction. If, on the other hand, the drive wheel 36 is set down on the ground, then it has u.a. the function of a track roller, which receives forces acting transversely to the main sliding direction and thus allows cornering of the transport frame 10.
  • the longitudinal bars 12 and 14 have at their end faces in each case a fußbetätigbares switching element 48 to 54.
  • the nursing staff can activate the auxiliary drive device 30, in particular their drive electronics.
  • the drive unit 32 is shown in a partially sectioned side view.
  • the drive wheel 36 is in the present embodiment, a plastic wheel with a tread 57, which is gummed, for example, to ensure a good grip with the ground.
  • a spur gear 58 is flanged with a spur gear toothing 60.
  • the spur gear 60 is in engagement with the toothing of a drive pinion 62 of the electric motor 34.
  • the electric motor 34 is dimensioned such that the magnetic induction occurring in it, which determines the rotor inertia of the electric motor 34, is so small that a mechanical locking of the drive wheel 36 as a result of the engagement of the drive pinion 62 in the spur gear 60 with the electric motor 34 is excluded is.
  • the low rotor inertia of the electric motor 34 also allows the drive wheel 36 in a state in which it is driven by the electric motor 34 to rotate by manually pushing the Caddy 10 at an angular speed which is higher than the angular speed when the drive wheel 36th would be rotated solely by the electric motor 34.
  • the spur gear 58 is a rear-side hollow-rotated element.
  • an inner Tread 64 is formed, which is formed by a suitable coating, such as a rubber coating, as a friction surface.
  • a rotatably mounted friction wheel 66 is a rotatably mounted friction wheel 66, which also has an example rubberized friction surface. If the drive wheel 36 and thus the spur gear 58 are rotated, then the friction wheel 66 rotates as a result of the contact of these two friction surfaces.
  • the friction wheel 66 is fixedly mounted on a rotatable shaft of a DC voltage generator 70.
  • a positive or a negative DC voltage is generated in the DC voltage generator 70 depending on the direction of rotation.
  • This DC voltage is supplied as a direction signal to the drive electronics.
  • the DC voltage generator 70 and the rotary wheel 66 mounted on its shaft form a direction sensor, by means of which the direction of rotation of the drive wheel 36 and thus the direction of movement of the transport frame 10 can be detected.
  • the above-described embodiment of the direction sensor is to be understood only as an example.
  • an incremental rotary encoder and, instead of the friction wheel 66, a spur gear can be provided.
  • formed as a friction surface inner race 62 of the spur gear 58 would be provided with a corresponding Stirnradtechnikung.
  • the auxiliary drive device 30 described above operates as follows: If the nursing staff wants to push the transport rack 10 out of the way, it first actuates one of the switching elements 48 to 54 with one foot. This activates the auxiliary drive device 30, in particular its drive electronics. Now pushes the nursing staff to the caddy 10, so the drive wheel 36 is rotated, provided that it is in the lowered state and thus touches down on the ground. As a result, the friction wheel 66 resting against the inner running surface 64 of the spur gear 58 is in turn rotated. The friction wheel 66 rotates the shaft 68 of the DC generator 70. By rotating the shaft 68, a DC voltage is generated in the DC generator 70, whose sign depends on the direction of rotation of the friction wheel 66 and thus ultimately on the direction in which the operator pushes the caddy 10 ,
  • the voltage generated by the DC generator 70 is supplied as a direction signal to the drive electronics.
  • the drive electronics sets the electric motor 34 in operation and controls it so that the drive pinion 62 rotates the flanged on the drive wheel 36 spur gear 58 in the direction in which the drive wheel 36 is already accelerated by the pushing of the caddy 10.
  • the drive wheel 36 is thus assistingly rotated by the electric motor 34 to reduce the to be applied by the operator for accelerating the Caddy 10 starting force.
  • the drive electronics resets the electric motor 34 once it is detected that the drive wheel 36 has reached a predetermined angular velocity.
  • the detection of the angular velocity can be done for example via a dedicated speed sensor.
  • the drive electronics can also be designed such that it derives the angular velocity from the voltage signal which the DC voltage generator 70 supplies to it.
  • a time interval as a switch-off criterion be specified. If this time interval starting with the startup of the electric motor 34 has expired, then the electric motor 34 is disabled.
  • the drive wheel 36 operates like a normal track roller. If the nursing staff brings the drive wheel 36 by means of the foot-operated lever 44 in its raised position from the ground, then the transport frame 10 can also be moved transversely to the main sliding direction.
  • the operating personnel can terminate the drive cycle of the drive unit 30 at any time by re-actuating one of the switching elements 48 to 54.

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  • Health & Medical Sciences (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)
  • Biomedical Technology (AREA)
  • Nursing (AREA)
  • Invalid Beds And Related Equipment (AREA)
  • Handcart (AREA)
EP10158823.4A 2009-05-08 2010-03-31 Dispositif d'entraînement auxiliaire pour un dispositif manuel mobile destiné au transport d'un lit de patients Not-in-force EP2248500B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL10158823T PL2248500T3 (pl) 2009-05-08 2010-03-31 Pomocnicze urządzenie napędowe dla ręcznie przemieszczanego urządzenia do transportowania powierzchni podparcia pacjenta

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009020395.8A DE102009020395B4 (de) 2009-05-08 2009-05-08 Hilfsantriebsvorrichtung und manuell bewegbare Einrichtung zum Transportieren einer Patientenlagerfläche mit einer Hilfsantriebsvorrichtung

Publications (3)

Publication Number Publication Date
EP2248500A2 true EP2248500A2 (fr) 2010-11-10
EP2248500A3 EP2248500A3 (fr) 2012-05-30
EP2248500B1 EP2248500B1 (fr) 2014-06-18

Family

ID=42357399

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10158823.4A Not-in-force EP2248500B1 (fr) 2009-05-08 2010-03-31 Dispositif d'entraînement auxiliaire pour un dispositif manuel mobile destiné au transport d'un lit de patients

Country Status (3)

Country Link
EP (1) EP2248500B1 (fr)
DE (1) DE102009020395B4 (fr)
PL (1) PL2248500T3 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014202024A1 (de) * 2014-02-05 2015-08-06 Siemens Aktiengesellschaft Medizinische Vorrichtung
CN107320278A (zh) * 2017-07-31 2017-11-07 成都中科博恩思医学机器人有限公司 一种具有推手的手术台车
CN107334595A (zh) * 2017-07-31 2017-11-10 成都中科博恩思医学机器人有限公司 一种具有延伸腿的手术台车底座
US10864127B1 (en) 2017-05-09 2020-12-15 Pride Mobility Products Corporation System and method for correcting steering of a vehicle
US10905612B2 (en) 2015-10-28 2021-02-02 Stryker Corporation Systems and methods for facilitating movement of a patient transport apparatus

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012110756A1 (de) * 2012-11-09 2014-06-12 MAQUET GmbH Transportwagen zum Transport einer Patientenlagerfläche und/oder einer Operationstischsäule eines Operationstischs
DE102015009816B4 (de) 2015-07-28 2019-01-03 MAQUET GmbH Motorisierter Lagerflächentransporter, Operationstischsystem mit Lagerflächentransporter und Rollenantrieb für ein Gestell

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29709888U1 (de) * 1997-06-06 1998-10-08 Expresso Deutschland Verteiler- bzw. Zustellerwagen
US6772850B1 (en) * 2000-01-21 2004-08-10 Stryker Corporation Power assisted wheeled carriage
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
IL158683A0 (en) * 2003-10-30 2004-05-12 Savion Ind 1987 Ltd Power-driven maneuverable platform

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014202024A1 (de) * 2014-02-05 2015-08-06 Siemens Aktiengesellschaft Medizinische Vorrichtung
US10905612B2 (en) 2015-10-28 2021-02-02 Stryker Corporation Systems and methods for facilitating movement of a patient transport apparatus
US10864127B1 (en) 2017-05-09 2020-12-15 Pride Mobility Products Corporation System and method for correcting steering of a vehicle
CN107320278A (zh) * 2017-07-31 2017-11-07 成都中科博恩思医学机器人有限公司 一种具有推手的手术台车
CN107334595A (zh) * 2017-07-31 2017-11-10 成都中科博恩思医学机器人有限公司 一种具有延伸腿的手术台车底座

Also Published As

Publication number Publication date
PL2248500T3 (pl) 2014-11-28
EP2248500A3 (fr) 2012-05-30
DE102009020395B4 (de) 2015-05-21
EP2248500B1 (fr) 2014-06-18
DE102009020395A1 (de) 2010-11-18

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