EP1031337A1 - Chaise réglable - Google Patents

Chaise réglable Download PDF

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Publication number
EP1031337A1
EP1031337A1 EP00200413A EP00200413A EP1031337A1 EP 1031337 A1 EP1031337 A1 EP 1031337A1 EP 00200413 A EP00200413 A EP 00200413A EP 00200413 A EP00200413 A EP 00200413A EP 1031337 A1 EP1031337 A1 EP 1031337A1
Authority
EP
European Patent Office
Prior art keywords
chair
adjustable
seat
frame
seat back
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Withdrawn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
EP00200413A
Other languages
German (de)
English (en)
Inventor
Leonardus Henricus Wilhelmus Giesen
Andreas Jacobus Louis Nijsen
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.)
Soweco NV
Original Assignee
Soweco NV
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 Soweco NV filed Critical Soweco NV
Publication of EP1031337A1 publication Critical patent/EP1031337A1/fr
Withdrawn legal-status Critical Current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
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • A61G5/14—Standing-up or sitting-down aids
    • 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
    • A61G5/12—Rests specially adapted therefor, e.g. for the head or the feet
    • A61G5/121—Rests specially adapted therefor, e.g. for the head or the feet for head or neck
    • 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
    • A61G5/12—Rests specially adapted therefor, e.g. for the head or the feet
    • A61G5/125—Rests specially adapted therefor, e.g. for the head or the feet for arms
    • 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
    • A61G5/12—Rests specially adapted therefor, e.g. for the head or the feet
    • A61G5/128—Rests specially adapted therefor, e.g. for the head or the feet for feet

Definitions

  • the invention relates to an adjustable chair which can be used for instance for people with leg problems. People who are older and the physically disabled may have the limitation that they have difficulty being able to move from a sitting position to a standing position.
  • Adjustable chairs which can be adjusted between a sitting position and a position wherein the user is assisted in standing up. Such known chairs can also assume a reclining position.
  • the known chairs have the drawback however that clothing of the person is shifted during the adjustment, whereby for instance an undershirt is pulled out of the trousers. Adjustment hereby becomes uncomfortable. Particularly in the case of people who sit in the chair for long periods and who cannot shift position easily, there is an additional great drawback here.
  • the shifted clothing causes pressure points on the body which are painful. Decubitus can result from these pressure points.
  • an adjustable chair according to the invention which comprises:
  • a comfortable adjustable chair is hereby obtained, wherein the user can remain seated in the chair, can adjust the chair and, in contrast to known chairs, does not have to change position in order once again to assume a comfortable position in the chair.
  • the chair comprises a lower leg support arranged on the adjustable frame such that the lower leg support is translatable and rotatable relative to the chassis and wherein the lower leg support is rotatable round the first rotation zone.
  • the lower leg support comprises a base part, an extending part arranged therein and an upholstery fabric arranged with one side on the top part of the base part, wherein the fabric runs over the free end of the extending part and wherein the other end of the fabric is arranged in spring-loaded manner on the underside of the base part.
  • the lower leg support is extensible. In order to minimize the shear forces between the upholstery and the body, the fabric is fixed to the upper part of the base part and unrolls under the lower leg of the user when the lower leg support is extended.
  • the adjustable frame comprises a rod mechanism. More particularly the adjustable frame comprises a first quadrangular rod mechanism or four-rod mechanism and a second quadrangular rod mechanism or four-rod mechanism, wherein both rod mechanisms have two rod parts in common.
  • a rod mechanism can ensure that the rotation zones of the chair correspond with the rotation zones of the body of the person.
  • a rod mechanism has the further advantage that these are simple structural elements with which a complex movement of rotation zones, seat and seat back can be obtained making use of only one driven rod. The necessity for a number of motors with a complex control is hereby obviated.
  • the seat is arranged on a rod part of the first rod mechanism and the seat back is arranged on a rod part of the second rod mechanism.
  • the adjustable chair according to the invention can hereby be adapted to a large number of people of specific sizes.
  • the adjustable chair comprises in a preferred embodiment controllable drive means for placing the seat back and the seat in a chosen position.
  • the drive means herein comprise only one motor. It is possible to move the chair with only this single motor. This is very advantageous from an economic viewpoint.
  • this chair can comprise height-adjustable armrests, the seat back can comprise an adjustable head rest, or the seat back can comprise an inflatable lumbar support. These specific embodiments increase the sitting comfort of the chair.
  • the chair can be dismantled into parts. Since such chairs can easily weigh about 50 kg, it is very advantageous if the chair can be dismantled into manageable parts so that the chair can be readily transported.
  • the first and/or the second rotation zone are virtual. This has the advantage that the physical rotation points of the adjustable frame can be situated for instance under the chair, while the rotation zones of the chair continue to correspond with the rotation zones of the body of a person.
  • the chair is adjustable such that the net shear force between the seat and the person sitting in the chair is substantially zero.
  • decubitus is a combination of shear forces acting on pressure points on the skin and in the skin.
  • the mass of the upper body of a person tends to press the lower body out of the chair. Since normal chairs are provided with a covering, this will be prevented by friction. This friction does however cause a shear force.
  • FIG. 1 shows a perspective view of a chair according to the invention.
  • the adjustable chair 1 comprises a chassis 2, an adjustable frame 3, which is further elucidated hereinbelow, a seat 4 and a seat back 5.
  • Adjustable frame 3 comprises two rod mechanisms, of which the first rod mechanism is formed by rods 6, 7, 8 and 9. With a view to the stability of the chair, this rod mechanism takes a dual form.
  • Rod 6 of the first rod mechanism forms part of chassis 2.
  • the second rod mechanism is formed by two rod parts of rods 8 and 9 and further rods 10 and 11.
  • the seat is arranged on rod 8 and seat back 5 is arranged on rod 10 of the first respectively the second rod mechanism.
  • the chair further comprises a motor 12 with which both the first and the second rod mechanism can be driven.
  • This drive 12 also serves as blocking for blocking the adjustable frame 3 in a desired and set position.
  • Figures 2, 3, 4 show three different positions of the chair. These positions are obtained by operating drive 12.
  • Figure 2 shows an active sitting position, figure 3 a "stand-up" position and figure 4 a reclining position.
  • the virtual rotation points V1, V2, which in this embodiment takes a real form, of the adjustable chair are such that they correspond in each position of the chair with the rotation points of the body of a person sitting in the chair.
  • the virtual rotation point V1 herein corresponds with the knee joint and virtual rotation point V2 corresponds with the hip joint.
  • the positions of the seat and the seat back are such that the person in the chair does not slide out of the chair.
  • the mutual positions of seat 4 and seat back 5 are such that no shear forces occur between seat 4 and the lower leg of the person.
  • FIG. 5 shows a schematic outline of a second embodiment of the lower leg support.
  • This lower leg support 17 comprises a base part 18, an extending part 19 and a fabric 20 which is arranged on the top side of base part 18 and is arranged on the underside under spring load of extending part 19. As extending part 19 slides out the fabric 20 will not now shift relative to the lower leg of a person. Fabric 20 unrolls as it were under the lower leg.
  • FIG 6 shows a lower leg support which can be mounted on the chair according to figure 1 and as shown in figures 7 and 8.
  • This lower leg support 13 comprises a cushion 14, a rod mechanism 15 and a drive 16.
  • Figure 7 shows a perspective view with dismantled parts of a chair according to the invention, which is fully upholstered.
  • Figure 8 shows the assembled embodiment of the chair according to the invention. Armrests 22 are herein also arranged.
  • rods 11 are adjustable in length and the height of adjustable frame 3 relative to chassis 2 is adjustable.
  • the positions of the rotation points are adjustable. It is hereby possible to adapt the chair to the measurements of the specific user.
  • the chair can comprise an adjustable head rest and a lumbar support.
  • the rests are further adjustable in height as well as in mutual distance.
  • the adjustable frame 3 is adjustable, it is possible with a limited number of components to provide chairs fully made to size for the user.
  • the adjustable frame is first adjusted to the measurements of the person. A choice from a limited number of cushions for seat and seat back is then made subject to the measurements. A particular colour can likewise be chosen here.
  • the chair can support the whole movement of the person standing up, it is desirable from a health viewpoint to limit the standing up setting to a determined maximum.
  • the person will hereby continue to train the muscles needed for standing up.
  • This limitation can be embodied mechanically, but can likewise be arranged in an optional control.

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)
  • Otolaryngology (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
EP00200413A 1999-02-22 2000-02-08 Chaise réglable Withdrawn EP1031337A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1011365 1999-02-22
NL1011365A NL1011365C2 (nl) 1999-02-22 1999-02-22 Verstelbare stoel.

Publications (1)

Publication Number Publication Date
EP1031337A1 true EP1031337A1 (fr) 2000-08-30

Family

ID=19768704

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00200413A Withdrawn EP1031337A1 (fr) 1999-02-22 2000-02-08 Chaise réglable

Country Status (2)

Country Link
EP (1) EP1031337A1 (fr)
NL (1) NL1011365C2 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1024576C2 (nl) 2003-10-21 2005-04-22 First B V Hulpinrichting, bestemd om te worden toegevoegd aan een zitmeubel, voor het heffen en/of kantelen daarvan.
EP2968039A4 (fr) * 2013-03-15 2016-10-19 Stryker Corp Appareil de support médical
US9668928B2 (en) 2013-03-15 2017-06-06 Stryker Corporation Person support apparatus with pivoting backrest
US10813806B2 (en) 2016-05-24 2020-10-27 Stryker Corporation Medical support apparatus with stand assistance
US11020295B2 (en) 2015-12-22 2021-06-01 Stryker Corporation Patient support systems and methods for assisting caregivers with patient care

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1982001314A1 (fr) * 1980-10-21 1982-04-29 Roger Churchward Chaise a postures multiples specialement chaise roulante, avec des moyens pour aider l'utilisateur a se lever
US5024486A (en) * 1990-04-03 1991-06-18 Auel Carl C All-purpose rocking, swiveling, reclining, and lifting chair

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1982001314A1 (fr) * 1980-10-21 1982-04-29 Roger Churchward Chaise a postures multiples specialement chaise roulante, avec des moyens pour aider l'utilisateur a se lever
US5024486A (en) * 1990-04-03 1991-06-18 Auel Carl C All-purpose rocking, swiveling, reclining, and lifting chair

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1024576C2 (nl) 2003-10-21 2005-04-22 First B V Hulpinrichting, bestemd om te worden toegevoegd aan een zitmeubel, voor het heffen en/of kantelen daarvan.
EP1525867A1 (fr) * 2003-10-21 2005-04-27 First Care B.V. Dispositif auxiliaire attachable à un meuble d'assise pour soulever et/ou incliner
EP2968039A4 (fr) * 2013-03-15 2016-10-19 Stryker Corp Appareil de support médical
US9668928B2 (en) 2013-03-15 2017-06-06 Stryker Corporation Person support apparatus with pivoting backrest
US9713559B2 (en) 2013-03-15 2017-07-25 Stryker Corporation Medical support apparatus
US11559448B2 (en) 2013-03-15 2023-01-24 Stryker Corporation Medical support apparatus
US11020295B2 (en) 2015-12-22 2021-06-01 Stryker Corporation Patient support systems and methods for assisting caregivers with patient care
US10813806B2 (en) 2016-05-24 2020-10-27 Stryker Corporation Medical support apparatus with stand assistance

Also Published As

Publication number Publication date
NL1011365C2 (nl) 2000-08-24

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