EP4268780A1 - Rollstuhl für behinderte mit multipositionssitz, der durch einen einzigen zylinder gesteuert wird - Google Patents

Rollstuhl für behinderte mit multipositionssitz, der durch einen einzigen zylinder gesteuert wird Download PDF

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Publication number
EP4268780A1
EP4268780A1 EP22169855.8A EP22169855A EP4268780A1 EP 4268780 A1 EP4268780 A1 EP 4268780A1 EP 22169855 A EP22169855 A EP 22169855A EP 4268780 A1 EP4268780 A1 EP 4268780A1
Authority
EP
European Patent Office
Prior art keywords
seat structure
seat
supporting frame
slide
cylinder
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.)
Pending
Application number
EP22169855.8A
Other languages
English (en)
French (fr)
Inventor
François Porcheron
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.)
4 Power 4 Powerstand
Original Assignee
4 Power 4 Powerstand
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 4 Power 4 Powerstand filed Critical 4 Power 4 Powerstand
Priority to EP22169855.8A priority Critical patent/EP4268780A1/de
Publication of EP4268780A1 publication Critical patent/EP4268780A1/de
Pending 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
    • A61G5/1056—Arrangements for adjusting the seat
    • A61G5/1075—Arrangements for adjusting the seat tilting the whole seat backwards
    • 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
    • A61G5/107—Arrangements for adjusting the seat positioning the whole seat forward or rearward
    • 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
    • A61G2203/10—General characteristics of devices characterised by specific control means, e.g. for adjustment or steering
    • A61G2203/14—Joysticks
    • 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
    • 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
    • A61G5/04—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs motor-driven
    • A61G5/041—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs motor-driven having a specific drive-type
    • 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 present invention relates to the technical field of wheelchairs for disabled people or people with disabilities or reduced mobility, which include a mechanism for moving the user's seat structure.
  • a wheelchair comprises a supporting frame provided with wheels and supporting a seating structure for the person including in particular a footrest, a seat and a backrest.
  • a mechanism adapted to move the seat structure To allow the user to change their position relative to the chassis, the wheelchair is provided with a mechanism adapted to move the seat structure.
  • the state of the art has proposed numerous solutions for producing the mechanism for moving the seat structure, depending on the movements possible for the user.
  • request WO 92/15271 has, for example, proposed an armchair comprising a supporting frame and lifting means, interposed between the frame and the seat structure.
  • the patent EP2004124 proposes to improve a lifting chair, by allowing the seat structure to adopt a position inclined towards the rear. Such a solution allows in particular relaxation of the user while reducing the pressure on the sit bones and the buttocks to reduce the risk of the appearance of bedsores and the shearing effects due to changes in position.
  • the seat structure there also appears to be a need for the seat structure to be positioned at the front of the chair to facilitate access to the chair or the transfer of the user.
  • the positioning of the seat structure in relation to the chassis must of course take into account the safety of the user and the constraints linked to the proper functioning of the chair. It thus appears that the user's center of gravity must remain in the lifting polygon of the chair both in terms of safety but also to ensure balanced distribution of loads on the wheels of the chair.
  • a wheelchair must have a first function of moving the seat structure in the longitudinal front-to-back direction and a second function of tilting the seat structure.
  • the implementation of each function requires the use of a displacement cylinder.
  • the space available between the supporting frame and the seat structure is generally limited, not allowing the installation of two displacement cylinders.
  • the use of a single cylinder appears a priori irrelevant for moving the seat structure by sliding and tilting.
  • the object of the invention aims to satisfy this need by proposing a wheelchair for a disabled person or person with reduced mobility, of simple design, adapted to move the structure using a single cylinder, sliding and tilting. seat in order to position it in different positions and in particular, in an advanced position, in a central safety position and in a tilted position.
  • the armchair according to the invention has the advantage of being able to move the seat structure by sliding and tilting using a single cylinder so that it occupies several positions.
  • the actuator control unit is adapted to control the actuator in tilting extension to fold the deformable structure so as to position the seat structure in a non-tilted position relative to the supporting frame.
  • the deformable structure comprises at least one quadrilateral formed of a first branch and a second branch articulated together around the articulation axis, the first branch being linked by a second articulation point, to a slider of the horizontal sliding guide system while the second branch is linked by a third articulation point, to the seat structure, the slider being linked to the seat structure by a fourth articulation point.
  • the slider comprises a front part linked by the second articulation point to the first branch and a rear part fixed to the seat of the seat structure by the fourth articulation point.
  • the horizontal sliding guide system comprises a guide comprising a front part fixed on the supporting frame to constantly guide the front part of the slide and to guide the rear part of the slide in the advanced position and nominal safety position, the guide comprising a rear part fixed to the seat of the seating structure to receive the rear part of the slide to allow the tilting of the seating structure.
  • the horizontal sliding guide system includes an extension stop so that in the advanced position, the seat structure protrudes at the front of the supporting frame, by a measure of between 10 cm and 30 cm. cm.
  • the horizontal sliding guide system includes a recoil stop making it possible to position the seat structure in its retracted position.
  • the hinge pin of the deformable structure is raised relative to the supporting frame in order to initiate the opening of the deformable structure.
  • the mechanism for lifting the articulation axis of the deformable structure relative to the supporting frame comprises at least one ramp fixed on the supporting frame with which the deformable structure cooperates during the sliding movement of the seat structure to initiate the deployment of the deformable structure.
  • the backward movement of the cylinder to obtain the tilting of the seat structure is just physically impossible since, due to lack of available space, the cylinder works parallel to the seat of the seat structure.
  • the jack cannot therefore tilt the seat structure, due to the angle of application of the force, which is at 0°.
  • the cylinder should on the contrary work perpendicular to the desired position.
  • the ramp therefore allows the angle of application of the force of the cylinder to be modified to be different from 0°.
  • the invention implements, below the seat, a deformable structure with a scissor in order to increase the traction force.
  • the ramp cooperates with a roller carried by the first branch of the quadrilateral connected to the slide.
  • the object of the invention relates to a wheelchair 1 for a disabled person or person with reduced mobility.
  • the wheelchair 1 comprises a supporting frame 2 on which a seat structure 3 for one person is adapted.
  • the supporting chassis 2 is equipped with two front wheels 4 and two rear wheels 5.
  • the wheels 4, 5 define by the points of contact with the ground, a support polygon or of support in which the mass or load represented by the seat structure 3 is positioned.
  • the wheelchair 1 is a motorized chair with drive wheels driven in rotation by a motor of all types known per se, powered by a set of batteries.
  • the wheels are controlled in rotation and are orientable using a control unit 6 of all types known per se, comprising for example a joystick allowing in particular to move forward, backward, turn left or right, the chair according to the invention.
  • a control unit 6 of all types known per se, comprising for example a joystick allowing in particular to move forward, backward, turn left or right, the chair according to the invention.
  • the mode of propulsion of the wheelchair 1 can be of all types and will not be described in more detail because it is not precisely part of the subject of the invention and is well known to those skilled in the art. job.
  • the seat structure 3 comprises a footrest 3a, a seat 3b and a backrest 3c.
  • the seat structure 3 is articulated so as to allow a modification of the relative inclination of the backrest 3c relative to the seat 3b and/or a modification of the relative inclination of the footrest 3a relative to the seat 3b.
  • the seat structure 3 also includes armrests 3d composed of fixed segments 3e rising from the seat structure 3 on either side of the seat 3b and at the end of each of which a segment is articulated support 3f for a forearm.
  • the support segments 3f can thus be raised to position themselves in the extension of the fixed segments 3e to facilitate the transfer of the person ( Figure 4 ) as will be described in the remainder of the description.
  • the wheelchair 1 comprises a movement mechanism 8 of the seat structure 3, interposed between the supporting frame 2 and the seat structure 3.
  • the wheelchair 1 according to the invention has the particularity of being able to position, thanks to the movement mechanism 8, the seat structure 3 in four characteristic positions.
  • the first position called “advanced position” illustrated by the figures 4 , 5 And 15 corresponds to the positioning of the seat structure 3 at the front of the support frame 2.
  • the seat structure 3 protrudes at the front of the support frame 2, by a measurement of between 10 cm and 30 cm.
  • This forward position facilitates access to the seating structure and the transfer of the person.
  • This forward position can also be used when moving the wheelchair uphill.
  • the second position called “nominal safety position” illustrated by the figures 1 to 3 And 14 corresponds to the positioning of the seating structure 3 in a neutral position relative to the supporting frame 2.
  • the seating structure 3 is moved back relative to its forward position, so that the The person's center of gravity is located in the central part of the support or lift polygon.
  • This nominal position makes it possible to keep the person safe while balancing the masses on the wheels, limiting wear on the front wheels 4.
  • the third position called the “backward position” illustrated by the figures 6 And 7 corresponds to the positioning of the seat structure 3 in a position moved back from the nominal safety position to initiate the tilting of the seat structure 3.
  • the seat structure 3 is moved back 4 cm to pass from its initial safety position to its rearward position. In this rearward position, the tilting of the seat structure 3 has begun.
  • tilted position illustrated by the figures 11 to 13 And 16 corresponds to the positioning of the seat structure 3 in a tilted position relative to the supporting frame 2.
  • the seat 3b of the seat structure is raised to obtain a tilted position for the person, for example 45° backwards. This tilted position allows relaxation of the user.
  • a tilted position can also be sought so that the seat occupies a horizontal position when the chair progresses, particularly downhill.
  • the movement mechanism 8 comprises a guide system 10 for horizontal sliding of the seat structure 3 in the front to back direction of the chair.
  • the guiding system 10 ensures horizontal sliding guidance of the seat structure 3 when the latter passes from one to the other of its first three positions, namely advanced position, nominal safety position and rearward position.
  • the guide system 10 comprises at least one fixed guide or slide 11 and in the illustrated example, two guides or slides 11 fixed on either side of the longitudinal edges of the supporting frame 2.
  • the two guides 11 extend parallel and symmetrical with respect to the longitudinal plane of symmetry of the chair delimiting the front-rear direction of the chair.
  • Each guide 11 serves to guide in translation a slide 12 supporting the seat structure 3.
  • the seat structure 3 is thus equipped at its base with two slides 12 extending on either side of the seat 3b .
  • each guide 11 is made in two separate parts, namely a front part 11a fixed on the supporting frame 2 and a rear part 11b fixed to the seat 3b of the seat structure 3.
  • each slide 12 is made in two parts separated, namely a front part 12a forming a slide connection with the front part 11a of the guide and a rear part 12b forming a slide connection with the rear part 11b of the guide but also with the front part 11a of the guide, outside the tilted position .
  • the front part 12a of the slide is constantly guided by the front part 11a of the guide while the rear part 12b of the slide is engaged depending on the position of the seat structure, i.e.
  • the horizontal sliding guide system 10 includes an extension stop 14 corresponding to the advanced position of the seat structure 3.
  • the slide 12 comes into contact with the stopper 14 to define the extreme advanced position of the seat structure 3.
  • the stopper 14 is positioned so that in the advanced position, the seat structure 3 protrudes at the front of the supporting frame 2, with a measurement between 10 cm and 30 cm.
  • the horizontal sliding guide system 10 includes a recoil stop 15 making it possible to position the seat structure 3 in its retracted position.
  • the slide 12 comes into contact with the recoil stop 15 to define the extreme rearward position of the seat structure 3.
  • the movement mechanism 8 comprises a deformable structure 16 interposed between the horizontal sliding guide system 10 and the seat structure 3.
  • This deformable structure 16 comprises an articulation axis 17 on which acts a motorized telescopic cylinder 18 mounted on the supporting frame 2 in order to move and deploy or fold the deformable structure 16.
  • the cylinder 18 is preferably mounted in the longitudinal plane of symmetry of the chair and comprises a body 18a fixed on the supporting frame 2 according to an articulation 18b extending perpendicular to the longitudinal plane of symmetry of the chair.
  • the cylinder 18 comprises a rod 18c connected at its free end by a ball joint, to the hinge pin 17.
  • the cylinder 18 is controlled by the control unit 6 to control the cylinder in extension or retraction so that the seat structure 3 can occupy its four characteristic positions, as will be described in detail in the remainder of the description.
  • the cylinder 18 is made in any suitable manner such as for example an electric cylinder, a hydraulic cylinder, a servomotor or any other suitable means.
  • the cylinder 18 is mounted to be positioned between the upper surface of the supporting frame 2 and the seat structure 3.
  • the deformable structure 16 comprises at least one deformable quadrilateral 19 and in the example illustrated two deformable quadrilaterals 19 extending on either side of the longitudinal edges of the supporting frame 2.
  • the two quadrilaterals 19 deformable extend parallel and symmetrical with respect to the longitudinal plane of symmetry of the chair delimiting the front to back direction of the chair.
  • the two quadrilaterals 19 are connected to each other by the hinge pin 17 extending transversely with respect to the longitudinal plane of symmetry of the chair.
  • Each quadrilateral 19 is formed by a first branch 20 and a second branch 21 articulated together around the hinge axis 17 to form a scissor.
  • the first branch 20 is linked at its end opposite to that connected to the hinge pin 17, by a second hinge point 23, to the front part 12a of the slide 12 forming the third side of the quadrilateral.
  • the second branch 21 is linked at its end opposite to that connected to the hinge pin 17, by a third hinge point 24, to the seat structure 3 forming the fourth side of the quadrilateral. More precisely, the second branch 21 is linked by the third articulation point 24, to the seat 3b of the seat structure 3.
  • the slide 12 and more precisely its rear part 12b is linked to the seat structure 3 by a fourth point of articulation 25 forming the pivoting or tilting axis of the seat structure 3. More precisely, the rear part 12b of the slide 12 is linked to the seat 3b of the seat structure 3, by the fourth point articulation 25 located in the junction region between the seat 3b and the backrest 3c.
  • the quadrilaterals 19 can thus be deployed or folded under the action of the cylinder 18 on the articulation axis 17.
  • the control of the cylinder 18 in retraction leads to the deployment or opening of the quadrilaterals 19 causing the tilting of the structure d seat 3.
  • the cylinder 18 also ensures the horizontal sliding of the seat structure 3 in the front to back direction of the chair.
  • the extension control of the cylinder 18 leads to moving the seat structure 3 forward with the sliding of the slide 12 forward, leading in particular to the engagement of the rear part 12b of the slide in the front part 11a of the guide 11.
  • part 12a of the slide is always engaged in the front part 11a of guide 11.
  • the rear part 12b of the slide is engaged in the front part 11a of the guide making it possible to lock together the two parts of the guide 11 and the slide 12.
  • the movement mechanism 8 comprises a mechanism of lifting 28 of the hinge pin 17 of the deformable structure relative to the supporting frame 2 during the sliding movement in the front-rear direction of the seat structure 3.
  • This lifting mechanism 28 is adapted to initiate the opening of the deformable quadrilaterals 19 then allowing the jack 18 to ensure their deployment.
  • This lifting mechanism 28 acts when the seat structure 3 moves from its nominal safety position to its rearward position. Thus, the nominal safety position is located upstream of the lifting mechanism 28.
  • the lifting mechanism 28 of the hinge pin 17 comprises at least one ramp 29 and in the example illustrated, two ramps 29 fixed on the supporting frame 2 and with which the deformable structure 16 cooperates.
  • the ramps 29 extend parallel to the longitudinal plane of symmetry of the chair and each cooperate with a roller 30 carried for example by the first branch 20 of the quadrilateral.
  • each roller 30 cooperates with a ramp 29 leading to lifting the first branch 20 and thereby subsequently, to lift or shift the articulation axis 17 relative to the second articulation point 23 of the first branch 20.
  • the movement of the seat structure 3 follows directly from the preceding description.
  • the seat structure 3 When rolling the wheelchair 1, the seat structure 3 is placed in its nominal safety position relative to the supporting frame 2.
  • the person controls, via the control unit 6, the extension of the cylinder 18 in order to position the seat structure 3 in this nominal safety position for which the seat 3b is substantially parallel to the supporting frame 2 and the center of gravity of the seat structure 3 is located in the central part of the support or support polygon of the wheelchair 1.
  • the extension of the cylinder 18 is controlled to move the seat structure 3 forward or backward depending on the conditions of use of the wheelchair.
  • the cylinder 18 When the person wishes to sit in the chair or get out of the chair, the cylinder 18 is extended to ensure the sliding of the seat structure 3 to an advanced position.
  • the slide 12 of the seat structure 3 When extending the cylinder rod, the slide 12 of the seat structure 3 is pushed and guided in translation by the guide 11.
  • the rear part 12b of the slide 12 is engaged in the front part 11a of the guide 11 making it possible to lock together the two parts of the guide 11 and the slide 12 so that the seat structure 3 is moved into a stable position.
  • the positioning of the seat structure 3 offset at the front of the chair facilitates person transfer operations.
  • the seat structure 3 is placed again in its nominal position relative to the supporting frame 2 ( figures 1 to 3 ).
  • the person controls by the control unit 6, the cylinder 18 in nominal sliding retraction in order to position the seat structure 3 in the nominal position for which the person is located in the central part of the support polygon or of sustenance.
  • the rod of the cylinder 18 is retracted, the slide 12 of the seat structure 3 is pulled and guided in translation by the guide 11.
  • the cylinder 18 is controlled by the control unit 6, in retraction in order to position the seat structure 3 in its retracted position.
  • the seat structure 3 is, by its slide 12, pulled and guided in translation by the guide 11.
  • the rollers 30 of the seat structure cooperate with the ramps 29 leading to lifting the articulation axis 17 or to shifting it relative to the second articulation point 23 of the first branch 20.
  • the angle formed between the first branch 20 and the second branch 21 opened after passage on ramps 29 ( Figure 10 ).
  • the cylinder 18 is controlled by the control unit 6, in tilting retraction to deploy the deformable structure 16 so as to position the seat structure 3 in a tilted position relative to the supporting frame 2.
  • the rod of the cylinder 18 is retracted leading to opening the angle between the first branch 20 and the second branch 21 so that the seat structure 3 tilts backwards around the fourth articulation point 25 ( figures 11 to 13 And 16 ).
  • the seat 3b is lifted and tilted backwards by an angle which can reach, for example, 45°.
  • control unit 6 When the person wishes to return to the nominal safety position of the seating structure 3, the control unit 6 is controlled to control the cylinder 18 in tilting extension to fold the deformable structure 16 so as to position the structure of seat 3 in a non-tilted position relative to the supporting frame 2.
  • the rod of the cylinder 18 is extended leading to closing the angle between the first branch 20 and the second branch 21 so that the seat structure 3 tilts towards the front around the fourth articulation point 25.
  • the cylinder 18 is controlled by the control unit 6, in order to position the seat structure 3 in its rearward position.
  • control unit 6 advantageously controls the cylinder 18 so that the seat structure 3 moves from its rearward position to the nominal safety position.
  • the cylinder 18 is controlled in extension so that the slide 12 of the seat structure 3 is pushed and guided in translation by the guide 11.
  • the front part 12a of the slide 12 cooperates with the front part 11a of the guide 11 while the rear part 12b of the slide 12 engages in the front part 11a of the guide 11.
  • the rollers 30 of the seat structure cooperate with the ramps 29 leading to lowering the articulation axis 17 and to substantially align it with the second articulation point 23 of the first branch 20.
  • the extension of the cylinder 18 is stopped when the seat structure 3 is positioned in the nominal safety position for which the person is positioned in the central part of the support or support polygon.
  • the armchair 1 has the advantage of having a seat structure 3 which can be moved into several positions with a single cylinder 18.
  • the seat structure 3 is capable of occupying a nominal position safety adapted for rolling the chair but also an advanced position to facilitate transfers of the person and a tilted position of the person towards the rear of the chair.
  • the wheelchair according to the invention thus has a simple design by implementing a movement mechanism 8 of the seat structure 3 with a single cylinder.

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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)
  • Chair Legs, Seat Parts, And Backrests (AREA)
EP22169855.8A 2022-04-25 2022-04-25 Rollstuhl für behinderte mit multipositionssitz, der durch einen einzigen zylinder gesteuert wird Pending EP4268780A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP22169855.8A EP4268780A1 (de) 2022-04-25 2022-04-25 Rollstuhl für behinderte mit multipositionssitz, der durch einen einzigen zylinder gesteuert wird

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22169855.8A EP4268780A1 (de) 2022-04-25 2022-04-25 Rollstuhl für behinderte mit multipositionssitz, der durch einen einzigen zylinder gesteuert wird

Publications (1)

Publication Number Publication Date
EP4268780A1 true EP4268780A1 (de) 2023-11-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP22169855.8A Pending EP4268780A1 (de) 2022-04-25 2022-04-25 Rollstuhl für behinderte mit multipositionssitz, der durch einen einzigen zylinder gesteuert wird

Country Status (1)

Country Link
EP (1) EP4268780A1 (de)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992015271A1 (en) 1991-03-01 1992-09-17 Hand-Pro As A device for wheel-chairs
EP2004124A1 (de) 2006-04-03 2008-12-24 Lifestand "Vivre Debout" Stuhl mit mehreren stellungen für körperbehinderte benutzer
US20160101664A1 (en) * 2014-10-10 2016-04-14 Max Mobility, Llc System and method for adjusting a wheelchair seat
US20190125599A1 (en) * 2016-04-05 2019-05-02 Pride Mobility Products Corporation Seat positioning system for a wheelchair

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992015271A1 (en) 1991-03-01 1992-09-17 Hand-Pro As A device for wheel-chairs
EP2004124A1 (de) 2006-04-03 2008-12-24 Lifestand "Vivre Debout" Stuhl mit mehreren stellungen für körperbehinderte benutzer
US20160101664A1 (en) * 2014-10-10 2016-04-14 Max Mobility, Llc System and method for adjusting a wheelchair seat
US20190125599A1 (en) * 2016-04-05 2019-05-02 Pride Mobility Products Corporation Seat positioning system for a wheelchair

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