EP2338456A1 - Verfahren zur Sicherung des Anhebebetriebs eines Rollstuhlsitzes und Anhebevorrichtung für einen Rollstuhl - Google Patents
Verfahren zur Sicherung des Anhebebetriebs eines Rollstuhlsitzes und Anhebevorrichtung für einen Rollstuhl Download PDFInfo
- Publication number
- EP2338456A1 EP2338456A1 EP09180467A EP09180467A EP2338456A1 EP 2338456 A1 EP2338456 A1 EP 2338456A1 EP 09180467 A EP09180467 A EP 09180467A EP 09180467 A EP09180467 A EP 09180467A EP 2338456 A1 EP2338456 A1 EP 2338456A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lifting
- lifting means
- wheelchair seat
- area
- wheelchair
- 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- Withdrawn
Links
Images
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
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/10—Parts, details or accessories
- A61G5/1056—Arrangements for adjusting the seat
- A61G5/1059—Arrangements for adjusting the seat adjusting the height of the seat
-
- 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
- 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 present invention relates to a method for securitizing the lifting operation of a wheelchair seat and to a lifting device for a wheelchair seat.
- the existing wheelchairs include specific means for easily adjusting the position of the seat.
- One of these means consists for instance in an hinged structure arranged between the base body of the wheelchair and the seat.
- Such a lifting means is revealed in the European Patent Application EP 1523971 .
- the aim of the present invention is therefore to provide a method for securitizing the lifting operation of a wheelchair seat and a lifting device for a wheelchair seat avoiding such a problem.
- the present invention is concerned with a method for securitizing the lifting operation of a wheelchair seat as claimed in claim 1. Important features of the method are defined in the dependent claims 2 to 4.
- the present invention also concerns a lifting device for a wheelchair seat as claimed in claims 5 to 9.
- This lifting device 1 comprises a lifting means 2 arranged between a lower frame 3 and an upper frame 4, said frames 3 and 4 having a rectangular form.
- the lower frame 3 is intended to be connected to a base body of the wheelchair and the upper frame 4 is intended to be connected to the underneath face of the wheelchair seat.
- the upper frame 4 supports also a mechanical structure defining an inclining device 5.
- Said device 5 is intended to modify the inclination of the wheelchair seat.
- Said lifting means 2 consists in a hinged structure defining a scissors joint with swing arms 6. In order to raise or lower the seat, one needs to push or pull one of the swing arms 6. This operation is done by an actuating means 7.
- the actuating means 7 consists in a piston acting on said swing arm 6 via a connecting rod 8.
- the activation of said actuating means 7 is controlled by a controller 9.
- said controller 9 receives input command signals Ci from the user via an input command device 10.
- Such a device 10 can consist in a keyboard or a joystick for instance.
- said controller 9 receives also output signals Si from one or more sensors 11 configured to detect the thermal infrared radiation emitted by an area surrounding the lifting means 2.
- said sensors 11 consist in thermopiles.
- thermopile is a sensor which use a serially-interconnected array of thermocouples, each of which consists of two dissimilar materials with a large thermoelectric power and opposite polarities.
- the thermocouples are placed across the hot and cold regions of a structure and the hot junctions are thermally isolated from the cold junctions.
- the cold junctions are typically placed on a silicon substrate to provide effective heat sink.
- In the hot regions there is a black body for absorbing the infrared radiation, which raises the temperature according to the intensity of the incident infrared radiation.
- These thermopiles employ two different thermoelectric materials which are placed on a thin diaphragm having a low thermal conductance and capacitance. The temperature difference between the hot and cold regions generates a voltage, which is proportional to said difference of temperature.
- the controller 9 when somebody penetrates into the surrounding area of the lifting means 2 via one of his body part, the thermal infrared radiations emitted by said area increase. Therefore, the sensors 11 generate a higher difference of temperature between the hot and cold regions and the voltage S1 generated by the sensors 11 is different from the voltage S0 generated by the sensors 11 before the body part penetrates inside said area.
- the comparison between said voltage S1 and said reference voltage S0 is done continuously by the controller 9 so that it can detect at any time the presence of a hot body inside the surveillance area of the sensors 11. Therefore, when the controller 9 detects that the voltage S1 is different from the voltage S0, it deactivates the actuating means 7 so that the lifting means 2 can no longer move.
- Such a deactivation consists for instance in interrupting the electric power of the actuating means 7 or, in case of a piston, in interrupting the hydraulic source feeding in fluid said piston.
- the lifting device 1 comprises at least four sensors 11 positioned at the four corners of the upper frame 4. These sensors 11 are orientated so that the lifting means 2 is at least partially covered by the sensing areas of said sensors 11. In particular, these sensing areas should be configured so as to cover the free spaces A1, A2, A3 and A4 existing between two hinged swing arms 6.
- said sensing area consists generally in a circular conical area in which the apex of the cone corresponds to the position of the thermopile sensor.
- thermopile sensor is O and the axis of rotation is (Ox)
- thermopiles should be adapted to detect a presence or a motion inside an area surrounding at least partially the lifting means of the wheelchair seat.
- sensors could be adapted to detect other physical parameters existing inside said area. For instance, microwave sensors, optical sensors, capacitive sensors and pyroelectric sensors could constitute alternative solutions for detecting a presence or a motion.
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)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP09180467A EP2338456A1 (de) | 2009-12-22 | 2009-12-22 | Verfahren zur Sicherung des Anhebebetriebs eines Rollstuhlsitzes und Anhebevorrichtung für einen Rollstuhl |
PCT/IB2010/055977 WO2011077369A1 (en) | 2009-12-22 | 2010-12-21 | Method for securitizing the lifting operation of a wheelchair seat and lifting device for a wheelchair seat |
EP16161671.9A EP3053565A1 (de) | 2009-12-22 | 2010-12-21 | Verfahren zur sicherung des anhebebetriebs eines rollstuhlsitzes |
EP10813125.1A EP2515820B9 (de) | 2009-12-22 | 2010-12-21 | Verfahren zur sicherung des anhebebetriebs eines rollstuhlsitzes und anhebevorrichtung für einen rollstuhl |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP09180467A EP2338456A1 (de) | 2009-12-22 | 2009-12-22 | Verfahren zur Sicherung des Anhebebetriebs eines Rollstuhlsitzes und Anhebevorrichtung für einen Rollstuhl |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2338456A1 true EP2338456A1 (de) | 2011-06-29 |
Family
ID=42124691
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09180467A Withdrawn EP2338456A1 (de) | 2009-12-22 | 2009-12-22 | Verfahren zur Sicherung des Anhebebetriebs eines Rollstuhlsitzes und Anhebevorrichtung für einen Rollstuhl |
EP16161671.9A Withdrawn EP3053565A1 (de) | 2009-12-22 | 2010-12-21 | Verfahren zur sicherung des anhebebetriebs eines rollstuhlsitzes |
EP10813125.1A Not-in-force EP2515820B9 (de) | 2009-12-22 | 2010-12-21 | Verfahren zur sicherung des anhebebetriebs eines rollstuhlsitzes und anhebevorrichtung für einen rollstuhl |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16161671.9A Withdrawn EP3053565A1 (de) | 2009-12-22 | 2010-12-21 | Verfahren zur sicherung des anhebebetriebs eines rollstuhlsitzes |
EP10813125.1A Not-in-force EP2515820B9 (de) | 2009-12-22 | 2010-12-21 | Verfahren zur sicherung des anhebebetriebs eines rollstuhlsitzes und anhebevorrichtung für einen rollstuhl |
Country Status (2)
Country | Link |
---|---|
EP (3) | EP2338456A1 (de) |
WO (1) | WO2011077369A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013066198A1 (en) * | 2011-11-05 | 2013-05-10 | Mbl Poland Sp. Z.O.O. | Lift, preferably for changing the positioning of the seat in a wheelchair |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0273888A2 (de) * | 1986-12-29 | 1988-07-06 | Unbescheiden GmbH | Hebevorrichtung für Kranke |
DE19947372A1 (de) * | 1999-10-01 | 2001-04-19 | Gesler Electronic Gmbh | Steuerschaltung für eine Hubvorrichtung |
WO2003088885A1 (en) * | 2002-04-19 | 2003-10-30 | Hill-Rom Services, Inc. | Hospital bed obstacle detection device and method |
EP1523971A2 (de) | 2003-10-13 | 2005-04-20 | Invacare Deutschland GmbH | Rollstuhl |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE442948B (sv) * | 1985-04-26 | 1986-02-10 | Arjo Hospital Equipment Ab | Anordning for att stoppa nedsenkningsrorelser hos motordrivna lyftaggregat |
AU2008261121A1 (en) * | 2008-01-01 | 2009-07-16 | Robert Mckenzie | Electric independent person transfer load and unload device |
-
2009
- 2009-12-22 EP EP09180467A patent/EP2338456A1/de not_active Withdrawn
-
2010
- 2010-12-21 EP EP16161671.9A patent/EP3053565A1/de not_active Withdrawn
- 2010-12-21 WO PCT/IB2010/055977 patent/WO2011077369A1/en active Application Filing
- 2010-12-21 EP EP10813125.1A patent/EP2515820B9/de not_active Not-in-force
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0273888A2 (de) * | 1986-12-29 | 1988-07-06 | Unbescheiden GmbH | Hebevorrichtung für Kranke |
DE19947372A1 (de) * | 1999-10-01 | 2001-04-19 | Gesler Electronic Gmbh | Steuerschaltung für eine Hubvorrichtung |
WO2003088885A1 (en) * | 2002-04-19 | 2003-10-30 | Hill-Rom Services, Inc. | Hospital bed obstacle detection device and method |
EP1523971A2 (de) | 2003-10-13 | 2005-04-20 | Invacare Deutschland GmbH | Rollstuhl |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013066198A1 (en) * | 2011-11-05 | 2013-05-10 | Mbl Poland Sp. Z.O.O. | Lift, preferably for changing the positioning of the seat in a wheelchair |
Also Published As
Publication number | Publication date |
---|---|
EP2515820B1 (de) | 2016-03-30 |
EP2515820B9 (de) | 2016-07-13 |
EP3053565A1 (de) | 2016-08-10 |
EP2515820A1 (de) | 2012-10-31 |
WO2011077369A1 (en) | 2011-06-30 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR |
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AX | Request for extension of the european patent |
Extension state: AL BA RS |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20111230 |