WO1990000042A1 - Rollstuhl zum heben und transport bewegungsunfähiger patienten - Google Patents
Rollstuhl zum heben und transport bewegungsunfähiger patienten Download PDFInfo
- Publication number
- WO1990000042A1 WO1990000042A1 PCT/HU1989/000031 HU8900031W WO9000042A1 WO 1990000042 A1 WO1990000042 A1 WO 1990000042A1 HU 8900031 W HU8900031 W HU 8900031W WO 9000042 A1 WO9000042 A1 WO 9000042A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- lifting
- brake
- frame
- working cylinder
- lever
- Prior art date
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
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/006—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs convertible to stretchers or 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
- 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
- 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
- A61G5/1072—Arrangements for adjusting the seat rotating the whole seat around a vertical axis
-
- 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
- A61G5/1081—Parts, details or accessories with shock absorbers or other suspension arrangements between frame and seat
Definitions
- the invention relates to a wheelchair for lifting and transporting immobile patents, in particular for use in sanitary institutions.
- HU-PS 166 772 discloses a device for lifting and transporting patients who are unable to move, which has a lattice frame assembled with rubber wheels and a handbrake, a telescopically extendable lever arm provided with belts and safety buckles and a padded bed .
- the lifting and transport of the patients is secured by plastic belts which are fastened by means of safety buckles which are arranged on lever arms which can be raised and lowered mechanically by means of a manually operated rotating arm, in accordance with the desired position.
- This construction only allows the patient to move when lying down, for a number of operations, such as washing, this device does not help. Its operation with the help of the hand-operated rotating arm is slow and cumbersome, its structure is complicated and voluminous, so it could be not spread this construction in practice.
- DE-0S 3 402 608 describes a patient lifting and transporting device which can be rolled on wheels and which, with the aid of a hydraulic or electric drive, is suitable for lifting and lowering a seat mounted on an inclined frame.
- the area of application of this facility is limited because the seat is not in a lounger can be converted and can not be rotated out of the plane of movement.
- their operation is tied to electrical energy, so it cannot be used under storage conditions, for example.
- a rollable patient lifting and transporting device which has a seat which can be converted into a couch, which is mounted on feet consisting of struts crossing each other and with the aid of hydraulic working cylinders to the desired one Height can be raised or lowered.
- Seat or lounger cannot be rotated relative to the longitudinal axis of the frame, so it cannot be manipulated at will in the narrow places between the beds of the hospital; besides, lifting or lowering is only possible along a vertical axis for simultaneous axial displacement of the supporting structure ⁇ tion this device is not capable, which may be necessary for certain operations, for example washing.
- the object to be achieved by the invention is to create a patient lifting and transporting device which eliminates the shortcomings and disadvantages of such earlier devices and which, with a relatively simple structure, can be safely used by an energy source that is independent of the network for various medical sports tasks with minimal space requirements can, and at the same time relieves the care personnel of the heavy physical stress.
- the task is solved by a wheelchair for lifting and transporting motionless patients, which one equipped with braked wheels
- Piston rod of the working cylinder which moves the lifting stool and which moves together with the brake rods which run in parallel on both sides by means of Tension springs are pressed.
- the construction according to the invention ensures, due to its construction, more varied patient movement possibilities both in the sitting and in the lying position compared to the constructions known hitherto; due to the rotatability of the supporting structure about a vertical axis, it can be easily manipulated even in tight spaces, and its braking devices ensure one maximum security against unwanted movement of the wheelchair and thus also the supporting structure on the wheelchair; their network independent. Energy source ensures high mobility even in conditions deviating from normal hospital conditions.
- the actuation of the construction according to the invention is extremely simple and provides maximum relief for the care personnel.
- the articulated lever mechanism is designed as an angle lever which can be rotated about an axis of rotation formed on the rear lower part of the frame, the supporting rollers supporting the lifting stool being mounted on the end of the front arm of the angle lever, while on the end of the rear arm of the angle lever, the end of the piston rod of the pneumatic working cylinder which realizes the lifting is connected, as a result of which this embodiment triggers the movement of the supporting structure with the aid of an extraordinarily simple mechanism.
- the brake arms are arched with brake rods adapted Brake shoes are provided, which are provided with ferrodol inserts and are guided in longitudinal guide bushes of the brakes.
- Fig. 1 is a perspective view of a
- FIG. 2 shows a schematic side view of the frame or the internal structure of the wheelchair according to FIG. 1,
- FIG. 3 shows the holding brake of the rear wheels of the wheelchair
- FIG. 4 shows a block diagram of the pneumatic system of the wheelchair according to the invention
- FIG. 5 shows the safety brake which fixes the position
- FIG. 6 shows a side view of the safety brake illustrated in FIG. 5
- FIG. 7 shows a more detailed structure of the lifting stool and the carrying structure of the wheelchair according to the invention in side view
- FIG. 8 shows a top view of the lever stool and FIG Tragkonstruktio ⁇ according to Fig.7.
- the wheelchair according to the invention has a frame 1 for lifting and transporting patients, which has front wheels on self-adjusting wheels 2 and rear wheels that are braked in ball bearings by an automatic stopping device 3 4 is rollable.
- the frame 1 contains a pneumatic system actuated by means of a control valve 5, which will be described in more detail later with reference to a block diagram illustrated in FIG. 4.
- guide rails are mounted, which form an oblique guide rail;
- a support structure 8 which is guided by rollers 6 and can be converted both into a support chair and into a support bed, can be displaced upwards and downwards and, in addition, can also be rotated by at least 90 ° in both lateral directions, which will be discussed in more detail later should.
- the wheelchair is moved by means of sliding arms 9 attached to the frame 1 . on which an actuating handle 3 'of the braking device 3 of the rear wheels 4 is arranged.
- the frame 1 and the adjoining structural units, ie the inner structure of the wheelchair are illustrated in more detail.
- the frame 1 is as a welded construction is formed from a closed profile, to which the guide rails 7 are fastened by welding, while the self-adjusting front wheels 2 and the larger rear wheels, which are mounted in ball bearings
- Wheels 4 are detachably mounted. Each wheel is designed as a spoke wheel and is preferably provided with a sealing rubber running part.
- the rear wheel 4 is fixed in the idle state by means of a braking device 3 described in more detail with reference to FIG. 3, so that it does not move under the influence of load and on an incline.
- the arrangement becomes “massive” since the support surface is shorter in the case of the support structure 8 which is extended in the longitudinal direction. This arrangement also enables the support structure 8 to be shifted forwardly when lowering along the inclined guideway in the direction of the front wheels 2 relative to its upper starting position.
- a pneumatic working cylinder 11 On the front oblique part of the frame 1, a pneumatic working cylinder 11 is supported in an articulated manner, which serves to move the supporting structure 8 on the guide rails 7 via an articulated lever mechanism.
- the angle lever which can be rotated about an axis of rotation formed on the rear lower part of the frame 1, consists of a longer straight front arm 13 and a rear arm welded to it and bent at an angle
- Arm 13 ' At the end of the rear arm 13 ', the end of the piston rod 43 of the pneumatic actuating cylinder 11 is connected, while at the free end of the arm 13 of the angular hebeis support rollers 14 are mounted, which support a supporting stool 15 carrying the supporting construction 8 on its surface in a rolling manner.
- the supporting structure 8 is mounted on the lifting stool 15 in such a way that it can be rotated about a vertical axis in the side direction by at least 90 °.
- resilient stops 12 are mounted on both sides at the bottom, on which the angle lever then rests when the arm 13 sinks to its bottom dead center, which certainly prevents a further sinking.
- FIG 3 the structure of the rear wheels 4 fix the braking device 3 is illustrated in more detail.
- This brake device 3 provided with press jaws is fastened to the gesture by means of a screw connection and locks the rear wheels 4 against movement in the idle state.
- the braking force is set by means of an adjusting mechanism 17 which is provided with a tension spring 16.
- the resilient actuating mechanism 17 is mounted on the top of a hanging mechanism 19 and on the bottom of a release lever 20.
- the release lever 20 is connected via a pin 21 to the hinge mechanism 19 which is adjustably fastened in the frame 1.
- At one end of the release lever 20 open or close the scissors-like brake arms of the brake provided with clamping jaws, depending on whether the other end of the release lever 20 lifts a Bowden 22 connected to the actuating handle 3 'against the tension spring 16 or holds it in the idle state.
- FIG. 4 shows the pneumatic system of the wheelchair according to the invention built into the frame.
- the energy- The source is formed from compressed nitrogen gas or another neutral gas or air, which is filled with officially checked gas bottles 25 in accordance with the standards.
- This energy source has so far not been used as part of lifting or material transport devices with low power, but here the energy stored therein is appropriate precisely because of the discontinuity of the lifting task at hand.
- a special advantage is their extraordinary mobility and compared to the mechanical solutions of the b ⁇ ka ⁇ nten Patie ⁇ te ⁇ hebeeinrichtu ⁇ ge ⁇ - which are generally operated hydraulically - simpler construction, since no electrical energy is used, so this ' device can be operated independently of any feed network, even under storage conditions or outdoors.
- the gas bottles 25 are locked against movement in the frame 1.
- the compressed gas flows from the gas bottle 25 via a reducer 27 into the system.
- the operating pressure can be set to a predetermined value.
- the pressure prevailing in the gas bottle 25 or the operating pressure can be checked directly via a pressure gauge, or the operating pressure can also be checked directly via a pressure gauge 28 which is led out.
- the function of the lifting mechanism of the supporting structure 8 is controlled in both directions by a control valve 5.
- the gas acts by pulling the actuating arm 5 'of the control valve 5 in the OPEN position via throttle valves 29 both on the working cylinder 11 moving the supporting structure 8 and on a working cylinder 30, which is a part of the following forms in more detail described position-fixing safety brake of the wheelchair according to the invention.
- the working cylinder 11 Due to the action of the compressed gas, the working cylinder 11, which is provided with a double function, lifts the lifting stool 15 via a forced connection. After the actuating arm 5 'is depressed in the DOWN position, the movement takes place in the opposite direction, i.e. the lifting mechanism 15 is lowered.
- the adjustment to a desired height can be secured at any point between the bottom and the top dead center, while the speed of lifting and lowering can be adjusted by means of the throttle valves 29.
- the actuating arm 5 'of the control valve 5 automatically returns from the UP or DOWN position to the middle position when the gas escapes from the parts of the system which are connected downstream of the control valve 5 via silencers 31.
- the components of the pneumatic system are connected to one another via flexible pressure pipes 32, T-profiles 33 and cross-connecting elements 34.
- a part of the pneumatic system is a mechanical construction illustrated in FIGS. 5 and 6, the so-called position-fixing safety brake, which prevents the occurrence of undesirable vibrations by securely holding the piston rod 43 of the working cylinder 11 and also prevents unintentional lowering of the lifting stool 15 (and so that the support structure 8) realizes a safety brake.
- This construction is fastened to the lower or upper cover 36 or 37 of the working cylinder 11 performing the lifting.
- Two fastening plates 39 are fastened to the cover 37.
- Brake arms 40 are articulated on both sides to the mounting plates 39, which are pulled towards one another by tension springs 41 and press the curved part of the brake arms 40 against brake rods 42 which pull on both sides.
- the two brake rods 42 are fastened to the head of the piston rod 43 of the working cylinder 11 and move together with the latter.
- the brake rod 42 are guided in 1-directional guide bushes 38 which are fastened to the lower cover 36.
- the curved parts of the brake arms 40 are provided with a ferrodol insert 44.
- the lifting stool 15 connecting to the articulated-lever lifting mechanism is a construction welded from a closed profile, which includes the mounted rails 6 of the guide rails 7 of the frame 1. On the lifting stool 15 is one of the figure
- the support structure 8 brought into the "support chair” position can be turned by 9 ° both to the right and to the left.
- the support structure consists of three main units, namely a seat part 8 ', a backrest 8 "and a footrest 8 1 ".
- the seat part 8' is mounted on the lifting stool 15, to which a padded insert 47 is fastened with a releasable connection .
- the seat part 8 ' is fitted into the central bore of the lifting mechanism 15 via a central pin 48 welded into its frame. Rollers 49 mounted in the frame of the seat part 8 'support the entire supporting structure 8 on the circular rotating path 46 and ensure their rotatability.
- the position after the rotation by 9 ° to the right or left is secured by a retaining clip 50.
- the backrest 8 1 ' and the footrest 8 * 11 are connected via joints 51 and 52, respectively. The surface of these are also provided with a padded insert 47.
- the backrest 8 1 ' is connected to the seat part 8 1 via an articulated adjusting device which is also commercially available and by means of which the backrest 8 1 ' measured from the horizontal to an 80 ° -Gre ⁇ can be raised or adjusted in steps (five degrees each).
- the footrest 8 ' 1 ' can be fastened horizontally by means of an articulated mechanism 53 and downwards from the horizontal at an angle of 60 by means of a tension bolt 54.
- the construction can also be supplemented with a heel support.
- the actuating handles 3 'mounted on the sliding arms 9' of the locking brake device 3 are to be pulled in, these actuating handles 3 1 via the Bowde ⁇ 22 by tilting the release lever 20 which fix the scissor-like brake arms which fix the rear wheels 4 in the idle state of the brake fitted with press jaws (open).
- the wheelchair put into operation is then guided to the patient to be transported.
- the height of the seat part 8 'of the support structure 8 which has been converted into a support chair is adjusted to the patient's berth and the patient is pushed into the support chair.
- the extended piston rod head rotates of the working cylinder 11 fed with compressed gas from the gas bottle 25 and pivotable about a lower joint point on a curved path, the rear arm 13 'connected to it, of the joint lever-lever mechanism designed as an angle lift, whereby the
- Support rollers 14 of the arm 13 move the lifting arm 15 with the supporting structure 8 upwards on the inclined guideway formed by the guide rails 7. This is made possible by the fact that the support roller 14 mounted on the arm 13 of the angle lever rolls on the lower surface of the horizontal part of the lifting arm 15. The lowering of the lifting arm 15, or the supporting structure 8, takes place in the opposite direction when the piston arm 43 of the working cylinder 11 moves.
- the compressed gas Simultaneously with the actuation of the working cylinder 11, the compressed gas also actuates the brake arm cylinder 30 of the position-fixing safety brake, which, against the tension spring 41, throws the brake arms 40 apart, the arched part of which separates from the brake rod 42 in this way, as a result of which the movement the Kolb ⁇ nsta ⁇ g ⁇ 43 d ⁇ s the lifting or. Lowering working cylinder 11 is made possible.
- the support structure 8 is placed in a transversely turned "lying" position and adapted to the length of the patient. After the patient has been moved over, the patient is lifted and the supporting structure 8, which rotates on the lifting frame 15 and is designed as a couch, is turned back in the longitudinal direction of the wheelchair. This makes it possible to remove the wheelchair from the patient's patient's seat or to move it to the patient's seat.
- the wheelchair In the case of surgery, the wheelchair is pushed next to the operating table and the patient is brought over to it. If the height of the operating table cannot be adjusted to suit the wheelchair, the supporting structure 8 which is designed as a lying-down support on the wheelchair is rotated and adjusted in the manner already described above until the height is reached until the height is reduced.
- the footrests 8 ' 1 ' fixed in the horizontal position and the backrest 8 tl located in an inclined position enable the patient to rotate 90 ° through the rotation of the support structure 8, which is converted into the support chair, and to arrange the footrest 8 11 'on the upper level the pan has a stably supported surface for receiving a position above the pan.
- the patient For taking a bath (Showering, washing), the patient then straightened up on the surface of the footrest, which can be solved with a little help.
- Lifting and for transporting patients can preferably be used in sanitary facilities, in social care institutions, in sanitary childcare institutions, or with minor modifications also in home care.
- the application of the device according to the invention can also be expanded beyond the basic function described above, if no supporting structure is mounted on the lifting stool, but rather special adapters that are required for the patient for some reasons. These can, for example, be means for work therapy purposes, or household devices, which makes the device according to the invention particularly useful for people with disabilities.
- the compactness and the versatility of the wheelchair according to the invention make it possible, even in the case of space constraints, to carry out care operations that could previously only be carried out without the use of lifting aids.
- the device is sufficiently stable and can also be used with corresponding certainty in the case of customary inclination conditions.
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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)
- Invalid Beds And Related Equipment (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
HU883378A HU201667B (en) | 1988-06-30 | 1988-06-30 | Wheel-chair for lifting and transporting ataxic sick persons |
HU3378/88 | 1988-06-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1990000042A1 true WO1990000042A1 (de) | 1990-01-11 |
Family
ID=47263779
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/HU1989/000031 WO1990000042A1 (de) | 1988-06-30 | 1989-06-28 | Rollstuhl zum heben und transport bewegungsunfähiger patienten |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0440644A1 (de) |
AU (1) | AU3845489A (de) |
CS (1) | CS397389A3 (de) |
DD (1) | DD283928A5 (de) |
HU (1) | HU201667B (de) |
WO (1) | WO1990000042A1 (de) |
YU (1) | YU133689A (de) |
ZA (1) | ZA895049B (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5957177A (en) * | 1995-05-25 | 1999-09-28 | Smith; Dennis William | Coupled workhead for use in timber processing |
WO2006111183A1 (en) * | 2005-04-21 | 2006-10-26 | Ab Skf | Wheelchair |
WO2012041748A1 (de) * | 2010-09-28 | 2012-04-05 | Interco Gesellschaft Für Die Planung Und Den Vertrieb Von Reha Hilfen Mbh | Sitzanordnung, z. b. rollstuhl, mit dynamischer sitzschale |
CN106137577A (zh) * | 2016-07-15 | 2016-11-23 | 长安大学 | 一种实现自助上下楼的轮椅 |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3970344A (en) * | 1975-12-11 | 1976-07-20 | Baumann Arthur V | Oxygen tank holder for wheelchairs |
US4010499A (en) * | 1975-07-17 | 1977-03-08 | Davis Alden B | Invalid transport |
GB1480974A (en) * | 1974-04-30 | 1977-07-27 | Karlsson S | Apparatus for enabling disabled persons to move independently |
US4506903A (en) * | 1983-03-03 | 1985-03-26 | Ndk, Incorporated | Wheelchair attachment |
DE3402608A1 (de) * | 1984-01-26 | 1985-08-01 | Johann 2950 Leer Gerdes | Selbstfahrlifter fuer schwerbehinderte |
DE3506029A1 (de) * | 1985-02-21 | 1986-08-28 | Heinz 4500 Osnabrück Gehrmeyer | Rollstuhl |
DE3508081A1 (de) * | 1985-03-07 | 1986-09-18 | Battelle-Institut E.V., 6000 Frankfurt | Hoehenverstellbarer rollstuhl |
DE3611436A1 (de) * | 1986-04-05 | 1987-10-08 | Medical Res & Dev Ag | Liege fuer patienten |
GB2201588A (en) * | 1986-12-22 | 1988-09-07 | Dermot Maynes | Adjustable wheelchair |
-
1988
- 1988-06-30 HU HU883378A patent/HU201667B/hu not_active IP Right Cessation
-
1989
- 1989-06-28 EP EP89907250A patent/EP0440644A1/de not_active Ceased
- 1989-06-28 AU AU38454/89A patent/AU3845489A/en not_active Abandoned
- 1989-06-28 WO PCT/HU1989/000031 patent/WO1990000042A1/de not_active Application Discontinuation
- 1989-06-29 YU YU133689A patent/YU133689A/sh unknown
- 1989-06-29 CS CS893973A patent/CS397389A3/cs unknown
- 1989-06-29 DD DD89330172A patent/DD283928A5/de not_active IP Right Cessation
- 1989-07-03 ZA ZA895049A patent/ZA895049B/xx unknown
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1480974A (en) * | 1974-04-30 | 1977-07-27 | Karlsson S | Apparatus for enabling disabled persons to move independently |
US4010499A (en) * | 1975-07-17 | 1977-03-08 | Davis Alden B | Invalid transport |
US3970344A (en) * | 1975-12-11 | 1976-07-20 | Baumann Arthur V | Oxygen tank holder for wheelchairs |
US4506903A (en) * | 1983-03-03 | 1985-03-26 | Ndk, Incorporated | Wheelchair attachment |
DE3402608A1 (de) * | 1984-01-26 | 1985-08-01 | Johann 2950 Leer Gerdes | Selbstfahrlifter fuer schwerbehinderte |
DE3506029A1 (de) * | 1985-02-21 | 1986-08-28 | Heinz 4500 Osnabrück Gehrmeyer | Rollstuhl |
DE3508081A1 (de) * | 1985-03-07 | 1986-09-18 | Battelle-Institut E.V., 6000 Frankfurt | Hoehenverstellbarer rollstuhl |
DE3611436A1 (de) * | 1986-04-05 | 1987-10-08 | Medical Res & Dev Ag | Liege fuer patienten |
GB2201588A (en) * | 1986-12-22 | 1988-09-07 | Dermot Maynes | Adjustable wheelchair |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5957177A (en) * | 1995-05-25 | 1999-09-28 | Smith; Dennis William | Coupled workhead for use in timber processing |
WO2006111183A1 (en) * | 2005-04-21 | 2006-10-26 | Ab Skf | Wheelchair |
WO2012041748A1 (de) * | 2010-09-28 | 2012-04-05 | Interco Gesellschaft Für Die Planung Und Den Vertrieb Von Reha Hilfen Mbh | Sitzanordnung, z. b. rollstuhl, mit dynamischer sitzschale |
CN106137577A (zh) * | 2016-07-15 | 2016-11-23 | 长安大学 | 一种实现自助上下楼的轮椅 |
Also Published As
Publication number | Publication date |
---|---|
YU133689A (sh) | 1992-07-20 |
ZA895049B (en) | 1990-04-25 |
HU201667B (en) | 1990-12-28 |
DD283928A5 (de) | 1990-10-31 |
CS397389A3 (en) | 1992-05-13 |
AU3845489A (en) | 1990-01-23 |
EP0440644A1 (de) | 1991-08-14 |
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