WO2014001853A1

WO2014001853A1 - Rehabilitative walker

Info

Publication number: WO2014001853A1
Application number: PCT/IB2012/055105
Authority: WO
Inventors: Valerijus DENISOVAS; Alvydas JUOCEVIČIUS
Original assignee: Uab "Vildoma"
Priority date: 2012-06-26
Filing date: 2012-09-25
Publication date: 2014-01-03
Also published as: LT5992B; LT2012050A

Abstract

The invention is related to rehabilitation equipment used to compensate for walking disability and to enable rehabilitation of lower limbs in order to restore functionality of limbs impaired as a result of injury or surgery. The rehabilitative walker (1) has frame (11) with wheels (12) and (13), vertical lifting mechanism (31), and additional lifting and pneumatic damper mechanism (51), patient hanger device (41) with trunk encirclers (43), and knee and feet area moving mechanism (61). The additional mechanism (51) has pneumatic cylinder (512) connected to compressor (522) as well as rectangular vertically movable frame with parallel levers (513) and (514) connected by hinges (515) to the load-carrying element (511) of the hanger device (41) and by hinges (516) to the guide (32) slider (517). The hanger device (41) is movably attached to the load-carrying element (511) and has hang holders (42) attached to element (511). Saddle (46) with thigh encirclers (47) attached is hung on trunk encirclers (43) by using buckles (44) and belts (45). Hang holders (42) are attached to load- carrying element (511) of hanger device (41) so that they can rotate around X axis, moreover, these holders have fastening part (48) to which trunk encirclers (43) are attached so that they can rotate around Y axis. Leg bars (71) can be movably attached to fastening part (48) of hang holders (42).

Description

REHABILITATIVE WALKER

Technical Field

The invention is related to rehabilitation equipment used to compensate for walking disability and to enable rehabilitation of lower limbs in order to restore functionality of limbs impaired as a result of injury or surgery. The invention can be used both at rehabilitation centres and privately.

Background Art

As to the technical level, there are walker trainer robot technical systems, they are mainly robots of exoskeleton type. However, in practice rehabilitative walkers with a frame with (usually) four wheels and a frame-mounted hanger device that holds the patient standing or hanging between the front and rear wheels of the rigid frame are used more widely.

The rehabilitative walker described in the patent US 6607202 has a wheeled frame on which a spring stand with a trunk holder attached is mounted. Leg bars with a knee-joint and a foot sole support with a shoe position immobiliser are attached to the trunk holder. The walker is used to support a person with walking disability (or suffering from a cerebral palsy) and make walking easier for him. However, this walker allows only forward movement of both knees at once and backward movement of both feet at once.

The rehabilitative walker according to EP2233120 A1 has a wheeled frame, a detachable spring stand mounted on the frame in front of the patient, and a patient hanger device connected to the stand via connector mechanism. The hanger device has a waist support and leg bars connectable to the waist support. Leg holding and guiding device made up of movable flexible ropes or bands placed on guides, such as pulleys, installed at the front and back parts of the frame, is connected to the leg bars at the position of shoes and knees. Ropes placed on the guides installed at the front part of the frame are connected to the leg bars at the position of shoes. Ropes placed on the guides installed at the back part of the frame are connected to the leg bars at the position of knees. Leg holding and guiding device prevents simultaneous forward movement of both knees and simultaneous backward movement of both feet. However, it is inconvenient to load a seriously ill patient into such walker; it is complicated to reach the patient fixing location. If a patient is overweight, use of these walkers gets complicated. Such walkers expand application potential of rehabilitative walkers, however, seriously ill patients are unable to use them.

The closest match is the rehabilitative walker according to the patent US 7150722, which has a frame with front and rear wheels, a vertical bar mounted on the frame behind the patient, on which a patient hanger device consisting of rigidly fixed chest and trunk holders is installed, a removable seat, a hanger device lifting mechanism that lifts the patient from the sitting position to the standing and walking position once the hanger device has been attached to the bar, movable leg bars attached to the trunk holder and having two metal strips connected via knee-joint, and a knee and feet area moving mechanism with flexible elastic connectors - ropes connecting the patient's knees to the special device at the back of the frame, which prevents simultaneous forward movement of both knees. At the front of the frame another part of the control mechanism, which consists of flexible connectors - ropes with one end of each being connected to the shoe fixing element located at the feet area and enabling turning of shoes and the other ends being placed on the frame-mounted pulley, is installed. The length of these ropes is selected such that they prevent simultaneous movement of both legs, but allow forward movement of one leg, like in the case of normal walking. In addition, there are two resilient ropes with one end attached to the frame and another one to the guiding pulley that enables movement of the resilient rope over it until the arrestor present on the rope reaches the pulley. When the shoe gets to the greatest distance from the front of the frame the arrestor pulls the pulley towards it and tightens the resilient rope. This takes place while the patient is ready to take the first step. Tight resilient rope pulls the shoe to the front thus facilitating the process of walking. This walker is used to support and make walking easier for a person with walking disability (for example, after cerebral palsy). However, the application potential of this walker is insufficient, for example, it is of little use in the process of rehabilitation after various injuries and when learning to walk. This is due to insufficient responsiveness of the hanger device that holds the patient as well as small efficiency in lifting a knee and pushing a feet.

Technical Problem

Technical Solution

This invention is aimed at creation of a rehabilitative walker that accomplishes the following objectives:

- ensures safe and convenient loading of a patient into the device regardless of the degree of disability as well as weight and height;

- has a more sensitive hanger that restricts the patient's movements as little as possible while ensuring convenient and safe placing of the patient in the upright position and assisting a patient in making walking movements that are as correct as possible, this is done by the mechanisms that raise knees and push feet during walking;

- enables a patient to do different exercises while being in upright position, thus helping to achieve faster rehabilitation;

- helps to create a feedback between the patient and the kinesitherapist to enable deciding on patient's health restoration progress and efficiency of the exercises selected for this purpose;

- provides convenient working conditions for the kinesitherapist or the person accompanying the patient;

- can be disassembled into transportable modules. This would enable use of the walker not only at rehabilitation centres, but also privately at the areas near home (grounds, stadiums, parks, etc.).

The aims of the invention are accomplished by the rehabilitative walker having the entirety of features laid out in the items of definition of the invention.

The rehabilitative walker according to this invention has a frame with front wheels rotating around their axes and rear wheels, a frame-mounted lifting mechanism with a manual lift, a patient hanger device with trunk encirclers and a knee and feet area moving mechanism.

The novelty is that the rehabilitative walker has an additional lifting and pneumatic damper mechanism (based on air pressure which in case of external influence / impact behaving like a spring and trying to restore the initial / primary position), the hanger device has a load-carrying element attached to the additional lifting and pneumatic damper mechanism, and that the vertical lifting mechanism (31) has a guide of the additional lifting and pneumatic damper mechanism.

The additional lifting and pneumatic damper mechanism has a pneumatic cylinder connected to the air compressor that may be a foot-operated or battery-powered pump and a rectangular vertically movable frame with parallel levers connected by hinges to the load-carrying element of the hanger device and by hinges to the guide slider capable of rolling on the wheels of the guide. This movable frame has two bottom levers between which a pneumatic cylinder clevis connected by a hinge to the top lever of the frame can move. The pneumatic cylinder housing holder is connected by a hinge to the slider. When a patient is walking the pneumatic cylinder clevis responds to the change in weight by moving up or down and acting like a pneumatic damper. The air compressed within the pneumatic cylinder pushes the hanger device upwards while supporting the patient with a stable force. Pressure of the air compressed within the pneumatic cylinder can be measured to show the load on the patient's legs when the patient is standing.

The top lever of the lifting and pneumatic damper mechanism has a handle used for driving the walker or by the person accompanying the patient when the former walks on the left or right side of the walker.

The hanger device has hang holders attached to the load-carrying element so that they can rotate around the X axis. Trunk encirclers are attached to the hang holders so that these bands can rotate around the Y axis, and a saddle with thigh encirclers attached is strapped to these bands by using buckles and bands. Such hanging distributes the patient's weight to three points of contact. As a result the major part of the patient's weight falls on the saddle while the remaining weight falls on the thigh encirclers. The hang holders can move relatively to each other by decreasing or increasing the distance between the trunk encirclers. This enables accurate adaptation of the patient hanger device to the patient's trunk. Rotation of the hanger device around the X and Y axes enables the patient to bend and turn trunk in all directions with minimum restriction of the patient's movements.

If the patient is unable to keep the body in an upright position the removable head and chest holder consisting of the stand-mounted head holder and the band placed around the patient's chest via the load-carrying element, which the hanger device has, is useful.

The top lever of the lifting and pneumatic damper mechanism may have an extensible or retractable bar attached via the hinge to the load-carrying element of the hanger device. This enables inclining of the patient hanging in the hanger device forward or backward.

If the patient cannot coordinate leg movements, a knee and feet area moving mechanism with two vertical holders housing the pulley system connected to the patient's knee and feet bands via the elastic elements is used. The patient's thigh bands are connected to the lift-mounted pulleys via the elastic elements. This knee and feet area moving mechanism greatly facilitates coordinated raising of each leg at knee as well as its pushing and forward stretching at foot. The pulley system installed within the vertical holders enables a coordinated raising of legs at knees with a force twice that of feet pushing force.

If a patient has not only impaired walking coordination, but also problems with leg muscles and knee ligaments, then leg bars are attached to the patient hang holders via hinges, each of these bars has two metal strips between which there are knee bending adjusters and additional bands in thigh and shin areas to fix the patient. The metal parts of strips of the leg bars, in the thigh area, are connected by elastic elements to lift-mounted pulleys. Leg bar parts located at shin and feet area are connected by elastic elements to knee and feet area movement mechanism.

The rehabilitative walker has a removable hand holder with soft elbowrests, which can be fastened on the adjustable-height stand screwed to the frame of the walker.

The rear wheels of the frame of the walker can rotate around their axes. This allows a patient in the walker to easily move in any direction, not to make circles when rolling, and to make a 360-degree turn around their axes.

The rehabilitative walker with the herein described features of invention can be easily dismantled and transported by a car.

Advantageous Effects

Description of Drawings

A more detailed explication of the invention is provided by drawings of sample embodiments.

Fig. 1 shows the planned view of the rehabilitative walker.

Fig. 2 depicts the scheme of dismantling of the rehabilitative walker.

Fig. 3 displays the planned view of the patient hanger device.

Fig. 4 shows the rotation of the hanger device around the Y axis.

Fig. 5 shows the rotation of the hanger device around the X axis.

Fig. 6 depicts the raising of the hanger device.

Fig. 7 displays the lowering of the hanger device.

Fig. 8 shows the forces acting on the patient.

Fig. 9 depicts the head and chest holder.

Fig. 10 displays tilted hanger device with the head and chest holder.

Fig. 11 shows the general view of the knee and feet area moving mechanism.

Fig. 12 gives the diagram of functioning of the knee and feet area moving mechanism.

Fig. 13 illustrates the connection of leg bars to the knee and feet area moving mechanism.

Best Mode

The rehabilitative walker 1 (Fig. 1, Fig. 2) comprises frame 11 with two front wheels 12 and two rear wheels 13, which can all rotate around their axes and have brakes (not shown in the drawing), bent tube 14 connected by bolts 15 to frame 11, hand holder 21 with soft elbowrests 22 and fastening fingers 23, vertical lifting mechanism 31 comprising a guide 32 vertically fastened to the frame 11, which has handles 33, and a manual lift 34 with worm-gear and crank 35, patient hanger device 41 (Fig. 2 and Fig. 3 - Fig. 5), lifting and pneumatic damper mechanism 51, and knee and feet area moving mechanism 61.

The front wheels 12 and rear wheels 13 of frame 11 of the walker 1 can rotate around their axis, lock on the rolling direction and be stopped by brakes. This allows a patient in the walker to easily move in any direction, not to make circles when rolling, and to make a 360-degree turn around his axis.

The hand holder 21 has adjustable-height stand comprised of vertical tube 24 fastened to the frame 11 and tube 25 sliding inside tube 24 and securable at a desired position by bolt 26. Fingers 23 of hand holder 21 are fastened by bolt 27. Height of hand holder 21 is adjustable by changing the position of tube 25. If hand holder 21 is not necessary, it can be easily removed.

The patient hanger device 41 (Fig. 2 and Fig. 3 - Fig. 5) has hang holders 42 and arched trunk encirclers 43 to which soft saddle 46 with soft thigh encirclers 47 attached is hung by using buckles 44 and belts 45. The fastening part 48 is used for fastening trunk encirclers 43 to hang holders 42 by hinges. If necessary, fastening part 48 can be used to attach leg bars as well (Fig. 13). Trunk encirclers 43 have a soft trunk-encircling belt (not shown in the figure) all around them. Such hanging distributes the patient's weight to three points of contact. The major part of the patient's weight falls on soft saddle 46 while the remaining weight falls on thigh encirclers 47. Therefore the patient does not feel excessive constriction at points of hanging and can walk with the walker for the whole time assigned for the procedure.

The main function of the patient hanger device 41 is to safely keep the patient in the upright position while limiting his trunk movements as little as possible. Hang holders 42 can move relatively to each other decreasing or increasing distance between trunk encirclers 43. This enables accurate adaptation of the patient hanger device 41 to the patient's trunk. Trunk encirclers 43 can rotate around the Y axis (Fig. 4) and hang holders 42 can rotate around the X axis (Fig. 5). Such rotation of the hanger device 41 around the X and Y axes enables the patient to bend and turn trunk in all directions with minimum restriction of the patient's movements.

The lifting and pneumatic damper mechanism 51 (Fig. 2 and Fig. 6 - Fig. 8) consists of load-carrying element 511 of hanger device 41, pneumatic cylinder 512 and rectangular vertically movable frame with parallel levers 513 and 514 connected by hinges 515 to the load-carrying element 511 and by hinges 516 to slider 517 capable of rolling on the wheels 518 of the guide 32. Clevis 519 of pneumatic cylinder 512 is attached to lever 513 by hinge 520 and housing of pneumatic cylinder 512 is fixed on slider 517 via hinge 521. Air to pneumatic cylinder 512 is supplied by compressor 522 that may be a foot-operated or battery-powered pump.

Fig. 6 and Fig. 7 show bringing of the patient from sitting to upright position. Pressing of valve 523 (its drawing is given in Fig. 7) releases remaining air from pneumatic cylinder 512 and clevis 519 descends together with lever 513. If the patient is sitting very low, descent of the patient hanger device 41 can be accelerated by turning handle 35 of lift 34, which makes lifting and pneumatic damper mechanism 51 and patient hanger device 41 descend together by rolling down guide 32 on wheels 518 (Fig. 2).

The patient hanger device 41 is lifted by supplying air by compressor 522, which causes clevis 519 of pneumatic cylinder 512 to move upwards and push lever 513 attached by hinge 520. Afterwards this entire process reoccurs. The only difference is that when compressor 522 is used lifting and pneumatic damper mechanism 51 lifts patient hanger device 41 attached to it via load-carrying element 511. Air supply by compressor 522 continues until levers 513 and 514 reach horizontal positions. If the lift height provided by hanger device 41 is not sufficient, height can be further increased by turning handle 35 of lift 34.

Air compressed in pneumatic cylinder 512 pushes its clevis 519 that consequently moves hanger device 41 up while supporting patient with stable force. When patient is walking his body moves to sides, front, back, up or down. When patient is walking clevis 519 responds to change in weight by moving up (Fig. 6) and down (Fig. 7) - it functions as a pneumatic damper. Air in pneumatic cylinder 512, being pressed by clevis 519, acts like a spring and smoothly reproduces human walking amplitude comprising a vertical shift of approximately 100 mm (Fig. 8).

Pressure of air compressed in pneumatic cylinder 512 is measured to tell us what load the patient's legs bear during standing. Standing force Fr will decrease if air is supplied by compressor 522 to cylinder 521 that pushes clevis 519 thus raising the load-carrying element 511 together with hanger device 41. Patient is lifted by soft saddle 46 with soft thigh encirclers 47 attached. Trunk encirclers 43 inside soft belt encircle trunk of the hanging patient and in combination with saddle 46 comprise a connection of the walker to the patient, which is safe and responsive to the patient's movements. When the patient's feet get above the ground, the lifting force F generated by air pressure is such that is needed to lift the patient from the floor and keep him in that position. That is, patient weight force Fs = F*k and feet pressure force Fr = 0. Besides the patient weight force Fs the lifting force F generated in the pneumatic cylinder 521 is necessary to raise lifting and pneumatic damper mechanism 51 and hanger device 41. This force depends on lifting and pneumatic damper mechanism 51, weight of hanger device 41, and angle of pushing of clevis 519. We shall refer to this dependence as coefficient 'k'.

Air pressure in cylinder 512 is measured by pressure sensor 623, the drawing of which is given in Fig. 8. Signal from this sensor is transmitted to analogue-digital converter 524 that has a digital indicator (not shown in the drawing). Pressure value multiplied by the selected coefficient k is displayed on converter 524. Pressure value matches the difference between forces of patient's weight and air pressure driven clevis 519 expressed in kilograms. If the patient is landed to the floor so that he is standing on his feet, then indicator 524 displays value equal to feet pressure force Fr, Fr = Fs- F*k> 0. This enables measurement of patient's feet pressure force Fr. This feature of the walker can be used as test indicating whether the treatment method selected is improving the patient's ability to do different walking exercises while prescribed pressure force Fr is maintained. In addition, difference between forces of standing on each foot can be measured when walking. If there is a difference it means that one of the patient's feet creates lower (higher) pressure against the floor. This asymmetry can be treated until equal pressure forces of both feet are achieved.

If the patient is unable to keep his body upright, then a head and chest holder (Fig. 9) is used, this consists of stand 525 with head holder 526 fastened by bolts 527 in bushes 528 and belt 530 at chest height. Height of head holder 526 can be adjusted by unscrewing bolt 529 and moving head holder 526 up or down as needed. Belt 530 is fastened around patient's chest via element 511. Lever 513 of lifting and pneumatic damper mechanism 51 has handle 531 used for steering the walker. Handle 531 facilitates steering when the walker is used by the person accompanying the patient when the former walks on the left or right side of the walker.

Lifting and pneumatic damper mechanism 51 enables bending of patient hanging in hanger device 41 forward or backward (Fig. 10). This is done by inserting bolt 532 into hole marked by -K, 0, +K, +2K and matching desired angle. When doing so bar 533 is extended or retracted and lever 513 gets longer or shorter by distance X. Bar 533 attached to load-carrying element 511 via hinge 515 pushes and rotates it around its axis 515, load-carrying element 511 tilts at desired angle together with hanger device 41 and stand 525 with head holder 526 and trunk holder 530 attached. This function is necessary to enable a patient hardly able to control his trunk to shift his gravity centre 'G' forward and start walking.

If the patient is unable to coordinate leg movements, knee and feet area moving mechanism 61 (Fig. 2, Fig. 11, Fig. 12) comprising two vertical holders 612 fastened by bolts 63 to bent tube 14 is used. At the top part of holders 612 there is pulley system 614 connected via elastic elements (ropes or rubber belts) (a) and (b) to patient's knee bands 615 and 616. At the bottom part of holders 612 there is pulley system 617 connected via elastic elements (c) and (d) to feet bands 618 and 619. Patient's thigh bands 620 and 621 are connected via elastic elements (e) to pulleys 622 mounted on lift 34 (Fig. 11). Elastic elements (f) connect patient's toe area to elastic elements (c) and (d).

Patient's legs are connected to each other by elastic elements (a, b, c, d, e) laid across system of pulleys A' and B' (Fig. 12). Pushing of the walker forward (as indicated by arrow) forces the patient to move feet and knees in turns with the help of mechanism 61, as drawn in Fig. 12. Suppose patient's weight, all or a part of it, falls on the floor via right leg with bands 621, 616, 619 and undergo greater friction against the floor compared to that of the left leg with bands 620, 615, 618, which patient wants to move when walking. When the walker rolls forward the patient's body is pushed and right leg having bands 621, 616, 619 and greater friction against the floor stays unmoved and anchors elastic element (c). Moving of the walker forward generates force Ft - stretching of elastic element (c). Elastic element (c), moving over pulley system B' pulls elastic element (a), which is connected to left leg via band 615 in knee area, with double force Ft*2. This action results in raising of left leg at band 615 in knee area. At the same time right leg acting as anchor pulls, via band 616 via elastic element (b), with force Ft' feet of left leg, which is connected by pulley system A' and elastic element (d) via band 618. This results in pulling forward of feet of left leg with force Ft'/2. The cumulative effect of this action is lifting of left leg at knee as well as pushing and forward stretching of leg via feet, in other words, left leg is put forward on the surface and straightened thus getting it ready to support the body.

This is how a step by the patient placed in the walker is performed. Then the cycle is repeated. In this way the patient with impaired function of walking can perform an action having maximum resemblance to walking. Elastic element (e) placed on pulleys 622 connects both legs at knees by bands 620 and 621 and prevents simultaneous forward movement of both knees, in other words, it prevents bending of both legs at knees at the same time. Energy necessary for patient to walk assisted by mechanism 61 is provided by kinesitherapist pushing the walker. This interaction can be used for feedback as it provides information about the patient's physical condition. If pushing the walker requires less energy from the person pushing it, this means that the patient in the walker does part of the work by using his own legs thus making the walker pushing easier. Elastic elements (f) connected to toe area prevent feet front from being hampered by the floor when walking and so make the patient's walking easier. The walker pushing effect can be achieved by placing it on treadmill. For this purpose wheels 12 and 13 of walker 1 are placed on immobile part of treadmill with brakes activated and the patient is left to walk on the moving belt (not shown in the drawing).

If the patient has not only impaired walking coordination, but also problems with leg muscles and knee ligaments, then some previously designed leg bars (for example. those described in patent US 6607202) can be additionally used. Fig. 13 shows a drawing of connection of leg bars to knee and feet area movement mechanism 61.

Leg bars 71 (Fig. 13) are connected via hinges to patient hanger device 41 (Fig. 2) by using fastening part 48 (Fig. 3, Fig. 4). Leg bars 71 have metal strips 72 and 73 connected by knee bending adjuster 74 as well as additional patient attachment points: bands 75 in thigh area and bands 76 in shin area, which attach each leg to respective leg bar 71 in thigh and shin area so that leg cannot move in respect of its bar. As a result of such hanging patient's weight gets distributed to five points of hanging and patient feels almost no pressure. This is necessary when leg muscles and ligaments are atrophied, there is a big chance of dislocation, and when skin is very susceptible to damages. Leg bars 71 have their footrests 77 that can be attached to patient's shoes by bands 78. If footrests are not needed, they can be removed.

Components of leg bars 71 are connected to elastic elements (a, b, c, d, e) of knee and feet area movement mechanism 61. In the segment between bands 75 in thigh area and bands 76 in shin area metal strips 72 are connected by elastic elements (e) to pulleys 622 mounted on lift 34. Bands 76 in shin area are connected to elastic elements (a) and (b) while bands of shoes 78 are connected to elements (c) and (d). Footrests 77 of leg bars 71 in toe area are connected to elements (c) and (d) by elastic elements (f).

The rehabilitative walker 1 is easy to dismantle (Fig. 2). After turning handle 723 of lifting and pneumatic damper mechanism 51 from position B to position B' it is possible to push patient hanger device 41 and centring load-carrying element 49 attached to it out from bush 724. Bush 724 is attached to load-carrying element 511. Hanger device 41 can rotate around X axis of load-carrying element 49 when it is immobilised in bush 724 by using handle 723.

Lifting and pneumatic damper mechanism 51 can be pushed up after unscrewing cap 525. Then this mechanism rolls on wheels 518 and out of the boundaries of guide 32 of stand 31.

Frame 11 can be detached from guide 32 of vertical lifting mechanism 31 (Fig. 1) by unscrewing bolts 16.

Knee and feet area movement mechanism 61 together with tube 14 is pushed out of frame 11 after unscrewing bolt 15 or removed from holder tube 14 after unscrewing bolts 63.

The rehabilitative walker 1 having been dismantled as described above, it can be placed in a car or other vehicle and transported to any place selected for walking.

Mode for Invention

Industrial Applicability

Sequence List Text

Claims

1. Rehabilitative walker (1) with frame (11) with front wheels (12) capable of rotating around their axes and rear wheels (13), frame (11) mounted vertical lifting mechanism (31) with manual lift (34), patient hanger device (41) with trunk encirclers (43), and knee and feet area moving mechanism (61), c h a r a c t e r i z e d in that this walker has additional lifting and pneumatic damper mechanism (51), hanger device (41) has load-carrying element (511) attached to additional lifting and pneumatic damper mechanism (51), and that vertical lifting mechanism (31) has guide (32) of additional lifting and pneumatic damper mechanism (51).

2. Walker according to claim, c h a r a c t e r i z e d in that the additional lifting and pneumatic damper mechanism (51) has pneumatic cylinder (512) and rectangular vertically movable frame with parallel levers (513) and (514) connected by hinges (515) to load-carrying element (511) of hanger device (41) and by hinges (516) to guide (32) slider (517) capable of rolling on the wheels (518) of the guide (32) and that the said movable frame has two bottom levers (514) between which a pneumatic cylinder (512) clevis (519) connected by a hinge (520) to the top lever (513) of the frame can move and that pneumatic cylinder (512) housing holder is connected by a hinge (521) to the slider (517).

3. Walker according to claim 2, c h a r a c t e r i z e d in that the pneumatic cylinder (512) is connected to air compressor (522) that may be a foot-operated or battery-powered pump.

4. Walker according to claim 3, c h a r a c t e r i z e d in that the hanger device (41) is movably connected to load-carrying element (511) via handle lock (723), has hang holders (42) attached to load-carrying element (511) via handle lock (723), and that saddle (46) with thigh encirclers (47) attached is hung on trunk encirclers (43) via buckles (44) and belts (45).

5. Walker according to claim 4, c h a r a c t e r i z e d in that the hang holders (42) have fastening part (48) to which trunk encirclers (43) are attached so that they can rotate around Y axis and that hang holders (42) are attached to load-carrying element (511) of hanger device (41) so that they can rotate around X axis.

6. Walker according to claim 5, c h a r a c t e r i z e d in that the hanger device (41) has head and chest holder comprising a stand (525) insertable in load-carrying element (511), a head holder (526) attached to this stand, and chest-encircling belt (530) attached to load-carrying element (511).

7. Walker according to claim 2, c h a r a c t e r i z e d in that the lever (513) of lifting and pneumatic damper mechanism (51) has extensible or retractable bar (533) attached to load-carrying element (511) via hinge (515).

8. Walker according to claim 7, c h a r a c t e r i z e d in that lever (513) of lifting and pneumatic damper mechanism (51) has handle (531).

9. Walker according to claim 1, c h a r a c t e r i z e d in that the knee and feet area moving mechanism (61) has two vertical holders (612) attached to tube (14) and housing the pulley system connected to the patient's knee and feet bands (615) and (616) via the elastic elements (a) and (b) and that system of pulleys (617) of holders (612) is connected to feet bands (618) and (619) via elastic elements (c) and (d) and that patient's thigh bands (620) and (621) are connected via elastic elements (e) to pulleys (622) mounted on lift (34).

10. Walker according to claim 9, c h a r a c t e r i z e d in that the elastic elements (f) connect patient's toe area to elastic elements (c) and (d).

11. Walker according to claim 5, c h a r a c t e r i z e d in that the leg bars (71) are attached to fastening part (48) of hang holders (42) so that these bars are rotatable.

12. Walker according to claim 11, c h a r a c t e r i z e d in that the leg bars (71) have metal strips (72) and (73) connected by knee bending adjuster (74), additional patient attachment bands (75) in thigh area and bands (76) in shin area.

13. Walker according to claim 12, c h a r a c t e r i z e d in that the metal strips (72) of leg bars (71) in the segment between attachment bands (75) in thigh area and bands (76) in shin area are connected by elastic elements (e) to pulleys 622 mounted on lift (34), metal strips (73) of leg holders are connected in knee area to elastic elements (a) and (b) of knee and feet area moving mechanism (61) while shoe holders (78) are connected to elastic elements (c) and (d).

14. Walker according to claim 15, c h a r a c t e r i z e d in that the footrests (77) of leg bars (71) are connected, in toe area, to elastic elements (c) and (d) by elastic elements (f).

15. Walker according to any of the claims 1‑14, c h a r a c t e r i z e d in that it has detachable hand holder (21) with soft elbowrests (22) and adjustable height stand comprising vertical tube (24) fastened to frame (11) and tube (25) sliding inside tube (24), and that rear wheels (13) of the frame (11) can rotate around their axes.