A standing frame and a knee support for a standing frame

Abstract

A knee support for a standing frame, the knee support comprising a supporting plate (50) for attaching the knee support to the standing frame; a first knee pad (30) rotatably attached to a first L-shaped bracket (31) on its shorter arm; a second knee pad (40) rotatably attached to a second L-shaped bracket (41) on its shorter arm; wherein the longer arm of the first bracket (31) is pivotably attached to the supporting plate (50) near the first end thereof by means of a first holder (32), and the longer arm of the second bracket (41) is pivotably attached to the supporting plate (50) near its second end by means of a second holder (42), so that the first knee pad (30) is located above the second knee pad (40).

Description

TECHNICAL FIELD

[0001] The show invention relates to standing frames, in particular to a knee support for a standing frame.BACKGROUND

[0002] A standing frame (also called a stander) is a device that facilitates transitioning a disabled person from a horizontal position to a vertical position and vice versa and maintaining a disabled person in an upright position. There are known standing frames of various structures.

[0003] Standing frames have knee supports for stabilising a knee joint when the patient is in the standing position. Typical knee supports have a single knee pad, configured to be positioned under the knee. However, in case of a flexion contracture of the knee joint, the typical knee support can cause dislocation of the knee joint.

[0004] A known standing frame is shown in US4968050A.SUMMARY OF THE INVENTION

[0005] There is a need to develop a new structure of a knee support for a standing frame, which would allow preparing patients for walking, without excess strain to the knee joint.

[0006] The object of the invention is a knee support for a standing frame, the knee support comprising a supporting plate for attaching the knee support to the standing frame; a first knee pad rotatably attached to a first L-shaped bracket on its shorter arm; a second knee pad rotatably attached to a second L-shaped bracket on its shorter arm; wherein the longer arm of the first bracket is pivotably attached to the supporting plate near the first end thereof by means of a first holder, and the longer arm of the second bracket is pivotably attached to the supporting plate near its second end by means of a second holder, so that the first knee pad is located above the second knee pad.

[0007] The knee support with two knee pads allows to protect and achieve straightening of the hip and knee joint. The double knee pad can be used for both front-supported and rear-supported verticalization. Moreover, the double knee pad can be mounted from the front in a position above and below the knee. Moreover, for rear-supported verticalization, it supports the back of the leg. Use of a double knee pad improves the quality of standing and eventually preparation for walking for patients subject to hip joint and knee joint surgery, with contractures in the hip and knee joints. The knee pad can be adjusted in the coronal plane, to facilitate protection of limbs from excess varus deformity or valgus deformity.

[0008] Preferably, the first knee pad is pivotably attached relative to the axis, perpendicular to the axis, by means of a first slidable and pivotable coupling, and the second knee pad is pivotably attached relative to the axis, perpendicular to the axis, by means of a second slidable and pivotable coupling.

[0009] Preferably, the first slidable and pivotable coupling comprises a first body which is rotatably attached relative to the axis on the shorter arm of the first bracket, and comprises a first U-shaped rail attached to the first body rotatably relative to the axis, perpendicular to the axes and, and slidably relative to the axis, and wherein the second slidable and pivotable coupling comprises a second body, which is rotatably attached relative to the axis on the shorter arm of the second bracket, and comprises a second U-shaped rail attached to the second body rotatably relative to the axis, perpendicular to the axes and, and slidably relative to the axis.

[0010] The possibility to change the setting of the angle of the knee pads relative to the axes Z1, Z2, it is possible to adjust the arrangement of the knee pads to the shape of the leg.

[0011] Furthermore, the possibility to adjust the setting of the angle of the knee pads relative to the axes Y1, Y2 depending on the shape of the leg, allows arranging the knee pads in a position wherein the knee pads better support the leg asides. They provide support perpendicularly to the direction of the force.

[0012] In another aspect, the invention also relates to a standing frame comprising knee supports as described herein.BRIEF DESCRIPTION OF DRAWINGS

[0013] The invention is shown by means of example embodiments on a drawing, wherein: Fig. 1 shows a standing frame with knee supports according to an embodiment of the invention; Figs. 2A-2B show the standing frame with the knee supports in a side view; Figs. 3A-3B show the standing frame with the knee supports in a side view, wherein the knee pads are arranged obliquely; Figs. 4A and 4B show the knee support with the knee pads arranged in parallel to each other; Figs. 5A and 5B show the knee support with the knee pads arranged obliquely relative to each other; Fig. 6 shows the knee support according to an embodiment of the invention in an exploded view. DETAILED DESCRIPTION OF EXAMPLE EMBODIMENTS

[0014] Figs. 1, 2A-2B, and 3A-3B show an example embodiment of a standing frame with knee supports according to an embodiment of the invention.

[0015] The standing frame has a base 10 with a vertical column 20, to which there are attached supports for keeping a person in an upright position. A chest support 21 is attached to the column 20 in its upper part; below are attached a hip support 22, (opposite which there is a back support 23) and knee supports with knee pads 30, 40. At the bottom, the column 20 has footrests 25. The base 10 has wheels 11 that enable movement of the standing frame. The structure of the standing frame presented herein is merely an example; the knee support according to the invention can also be used with other types of standing frames with features similar to the embodiment presented herein.

[0016] The knee support is shown by means of a detailed example embodiment in Figs. 4A-4B, 5A-5B and 6. The knee support is attached to the standing frame by means of a supporting plate 50, which in its central part has an opening with a fixing bolt 51, which enables attaching the knee support to a leg guide 24A, 24B on the standing frame.

[0017] The knee support comprises a first knee pad 30 rotatably attached to a first L-shaped bracket 31 on its shorter arm, and a second knee pad 40 rotatably attached to a second L-shaped bracket 41 on its shorter arm. The longer arm of the first bracket 31 is pivotably attached to the supporting plate 50 at its first end by means of a first holder 32, while the longer arm of the second bracket 41 is pivotably attached to the supporting plate 50 at its second end by means of a second holder 42 and therefore the first knee pad 30 is located above the second knee pad 40.

[0018] The knee pad 30, 40 has a form of a U-shaped cushion, which during use partially surrounds a part of the leg, immobilising it substantially in three directions along a segment of the leg.

[0019] The first knee pad 30 is rotatable around the axis X1 of the shorter arm of the first bracket 31, and the second knee pad 40 is rotatable around the axis X2 of the shorter arm of the second bracket 41.

[0020] Preferably, the shorter arms of the brackets 31, 41 have a circular cross-section, thus enabling the attachment of the knee pads 30, 40, for example by means of bushings 37, 47 rotating directly on the shorter arms of the brackets 31, 41. The ability of the knee pads to rotate is blocked by tightening locking bolts 38, 48 that pass through openings in the bushings 37, 47.

[0021] The first holder 32 is attached to the supporting plate 50 by means of bolts 34A which pass through an arcuate opening 34B (an opening in the form of a sector of a circle) located in the first holder 32.

[0022] In order to set the angle of inclination of the first knee pad 30, it is necessary to loosen the bolts 34A and rotate the first bracket 31 along with the first holder 32 along the opening 34B. Then, the bolts 34A can move along the opening 34B. Upon arranging the first knee pad 30 in the desired position, the bolts 34A have to be tightened.

[0023] Similarly, the second holder 42 is attached to the supporting plate 50 by means of bolts 44A which pass through an arcuate opening 44B located in the second holder 42.

[0024] In order to set the angle of inclination of the second knee pad 40, it is necessary to loosen the bolts 44A and rotate the second bracket 41 along with the second holder 42 along the opening 44B. Then the bolts 44A can move along the opening 44B. Upon arranging the second knee pad 40 in the desired position, the bolts 44A have to be tightened.

[0025] The first bracket 31 is attached to the first holder 32 in a slidable manner, thus enabling adjustment of the distance of the first knee pad 30 from the leg by changing the scope of extension of the first bracket 31 from the first holder 32. The ability to extend the first bracket 31 is blocked by tightening a fixing bolt 35.

[0026] Similarly, the second bracket 41 is attached to the second holder 42 in a slidable manner, thus enabling adjustment of the distance of the second knee pad 40 from the user's leg by changing the scope of extension of the second bracket 41 from the second holder 42, regardless of the position of the first knee pad 40. The ability to extend the second bracket 41 is blocked by tightening a fixing bolt 45.

[0027] The first knee pad 30 is pivotable relative to the axis Y1, perpendicular to the axis X1, by means of a first slidable and pivotable coupling 33. The second knee pad 40 is pivotable relative to the axis Y2, perpendicular to the axis X2, by means of a second slidable and pivotable coupling 43. As a result, by setting a proper inclination and rotation of the knee pads 30, 40, and proper extension of the brackets 31, 41, the first knee pad 30 located higher can be arranged above the knee, due to which stabilisation and stretching take place along a short segment and involve one joint only, while the second knee pad 40 located lower than the first knee pad 30 supports the shin, providing the possibility of straightening the knee joint, stretching and protection from hyperextension.

[0028] The first pivotable coupling 33 comprises a first body 33A, which is rotatably attached relative to the axis X1 on the shorter arm of the first bracket 31, as well as a first U-shaped rail 33B attached to the first body 33A rotatably relative to the axis Z1, perpendicular to the axes X1 and Y1, and slidably relative to the axis Y1.

[0029] The second pivotable coupling 43 comprises a second body 43A, which is rotatably attached relative to the axis X2 on the shorter arm of the second bracket 41, as well as a second U-shaped rail 43B attached to the second body 43A rotatably relative to the axis Z2, perpendicular to the axes X2 and Y2, and slidably relative to the axis Y2.

[0030] The first body 33A may comprise a bushing 37, and the second body 43A may comprise a bushing 47.

[0031] In order to set the angle of rotation of the first knee pad 30 relative to the axis Z1, it is necessary to loosen the bolts 39A and rotate the first knee pad 30 to the desired position. The bolts 39A then move along arcuate openings 39B in the first body 33A. Upon arranging the first knee pad 30 in the desired position relative to the axis Z1, it is necessary to tighten the bolts 39A.

[0032] Similarly, in order to set the angle of rotation of the second knee pad 40 relative to the axis Z2, it is necessary to loosen the bolts 49A and rotate the second knee pad 40 to the desired position. The bolts 49A then move along arcuate openings 49B in the second body 43A. Upon arranging the second knee pad 40 in the desired position relative to the axis Z2, it is necessary to tighten the bolts 49A.

[0033] In order to set the angle of rotation of the first knee pad 30 relative to the axis Y1, it is necessary to loosen the bolts 36A and rotate the first knee pad 30 to the desired position. The bolts 36A then move along an elongated opening 36B in the first U-shaped rail 33B. Upon arranging the first knee pad 30 in the desired position relative to the axis Y1, it is necessary to tighten the bolts 36A. The elongated opening 36B extends along the length of the first U-shaped rail 33B.

[0034] Similarly, in order to set the angle of rotation of the second knee pad 40 relative to the axis Y1, it is necessary to loosen the bolts 46A and rotate the second knee pad 40 to the desired position. The bolts 46A then move along an elongated opening 46B in the second U-shaped rail 43B. Upon arranging the second knee pad 40 in the desired position relative to the axis Y1, it is necessary to tighten the bolts 46A. The elongated opening 46B extends along the length of the second U-shaped rail 43B.

Examples

Embodiment Construction

[0014]Figs. 1, 2A-2B, and 3A-3B show an example embodiment of a standing frame with knee supports according to an embodiment of the invention.

[0015]The standing frame has a base 10 with a vertical column 20, to which there are attached supports for keeping a person in an upright position. A chest support 21 is attached to the column 20 in its upper part; below are attached a hip support 22, (opposite which there is a back support 23) and knee supports with knee pads 30, 40. At the bottom, the column 20 has footrests 25. The base 10 has wheels 11 that enable movement of the standing frame. The structure of the standing frame presented herein is merely an example; the knee support according to the invention can also be used with other types of standing frames with features similar to the embodiment presented herein.

[0016]The knee support is shown by means of a detailed example embodiment in Figs. 4A-4B, 5A-5B and 6. The knee support is attached to the standing frame by means of a supp...

TECHNICAL FIELD

[0001] The show invention relates to standing frames, in particular to a knee support for a standing frame.BACKGROUND

[0002] A standing frame (also called a stander) is a device that facilitates transitioning a disabled person from a horizontal position to a vertical position and vice versa and maintaining a disabled person in an upright position. There are known standing frames of various structures.

[0003] Standing frames have knee supports for stabilising a knee joint when the patient is in the standing position. Typical knee supports have a single knee pad, configured to be positioned under the knee. However, in case of a flexion contracture of the knee joint, the typical knee support can cause dislocation of the knee joint.

[0004] A known standing frame is shown in US4968050A.SUMMARY OF THE INVENTION

[0005] There is a need to develop a new structure of a knee support for a standing frame, which would allow preparing patients for walking, without excess strain to the knee joint.

[0006] The object of the invention is a knee support for a standing frame, the knee support comprising a supporting plate for attaching the knee support to the standing frame; a first knee pad rotatably attached to a first L-shaped bracket on its shorter arm; a second knee pad rotatably attached to a second L-shaped bracket on its shorter arm; wherein the longer arm of the first bracket is pivotably attached to the supporting plate near the first end thereof by means of a first holder, and the longer arm of the second bracket is pivotably attached to the supporting plate near its second end by means of a second holder, so that the first knee pad is located above the second knee pad.

[0007] The knee support with two knee pads allows to protect and achieve straightening of the hip and knee joint. The double knee pad can be used for both front-supported and rear-supported verticalization. Moreover, the double knee pad can be mounted from the front in a position above and below the knee. Moreover, for rear-supported verticalization, it supports the back of the leg. Use of a double knee pad improves the quality of standing and eventually preparation for walking for patients subject to hip joint and knee joint surgery, with contractures in the hip and knee joints. The knee pad can be adjusted in the coronal plane, to facilitate protection of limbs from excess varus deformity or valgus deformity.

[0008] Preferably, the first knee pad is pivotably attached relative to the axis, perpendicular to the axis, by means of a first slidable and pivotable coupling, and the second knee pad is pivotably attached relative to the axis, perpendicular to the axis, by means of a second slidable and pivotable coupling.

[0009] Preferably, the first slidable and pivotable coupling comprises a first body which is rotatably attached relative to the axis on the shorter arm of the first bracket, and comprises a first U-shaped rail attached to the first body rotatably relative to the axis, perpendicular to the axes and, and slidably relative to the axis, and wherein the second slidable and pivotable coupling comprises a second body, which is rotatably attached relative to the axis on the shorter arm of the second bracket, and comprises a second U-shaped rail attached to the second body rotatably relative to the axis, perpendicular to the axes and, and slidably relative to the axis.

[0010] The possibility to change the setting of the angle of the knee pads relative to the axes Z1, Z2, it is possible to adjust the arrangement of the knee pads to the shape of the leg.

[0011] Furthermore, the possibility to adjust the setting of the angle of the knee pads relative to the axes Y1, Y2 depending on the shape of the leg, allows arranging the knee pads in a position wherein the knee pads better support the leg asides. They provide support perpendicularly to the direction of the force.

[0012] In another aspect, the invention also relates to a standing frame comprising knee supports as described herein.BRIEF DESCRIPTION OF DRAWINGS

[0013] The invention is shown by means of example embodiments on a drawing, wherein: Fig. 1 shows a standing frame with knee supports according to an embodiment of the invention; Figs. 2A-2B show the standing frame with the knee supports in a side view; Figs. 3A-3B show the standing frame with the knee supports in a side view, wherein the knee pads are arranged obliquely; Figs. 4A and 4B show the knee support with the knee pads arranged in parallel to each other; Figs. 5A and 5B show the knee support with the knee pads arranged obliquely relative to each other; Fig. 6 shows the knee support according to an embodiment of the invention in an exploded view. DETAILED DESCRIPTION OF EXAMPLE EMBODIMENTS

[0014] Figs. 1, 2A-2B, and 3A-3B show an example embodiment of a standing frame with knee supports according to an embodiment of the invention.

[0015] The standing frame has a base 10 with a vertical column 20, to which there are attached supports for keeping a person in an upright position. A chest support 21 is attached to the column 20 in its upper part; below are attached a hip support 22, (opposite which there is a back support 23) and knee supports with knee pads 30, 40. At the bottom, the column 20 has footrests 25. The base 10 has wheels 11 that enable movement of the standing frame. The structure of the standing frame presented herein is merely an example; the knee support according to the invention can also be used with other types of standing frames with features similar to the embodiment presented herein.

[0016] The knee support is shown by means of a detailed example embodiment in Figs. 4A-4B, 5A-5B and 6. The knee support is attached to the standing frame by means of a supporting plate 50, which in its central part has an opening with a fixing bolt 51, which enables attaching the knee support to a leg guide 24A, 24B on the standing frame.

[0017] The knee support comprises a first knee pad 30 rotatably attached to a first L-shaped bracket 31 on its shorter arm, and a second knee pad 40 rotatably attached to a second L-shaped bracket 41 on its shorter arm. The longer arm of the first bracket 31 is pivotably attached to the supporting plate 50 at its first end by means of a first holder 32, while the longer arm of the second bracket 41 is pivotably attached to the supporting plate 50 at its second end by means of a second holder 42 and therefore the first knee pad 30 is located above the second knee pad 40.

[0018] The knee pad 30, 40 has a form of a U-shaped cushion, which during use partially surrounds a part of the leg, immobilising it substantially in three directions along a segment of the leg.

[0019] The first knee pad 30 is rotatable around the axis X1 of the shorter arm of the first bracket 31, and the second knee pad 40 is rotatable around the axis X2 of the shorter arm of the second bracket 41.

[0020] Preferably, the shorter arms of the brackets 31, 41 have a circular cross-section, thus enabling the attachment of the knee pads 30, 40, for example by means of bushings 37, 47 rotating directly on the shorter arms of the brackets 31, 41. The ability of the knee pads to rotate is blocked by tightening locking bolts 38, 48 that pass through openings in the bushings 37, 47.

[0021] The first holder 32 is attached to the supporting plate 50 by means of bolts 34A which pass through an arcuate opening 34B (an opening in the form of a sector of a circle) located in the first holder 32.

[0022] In order to set the angle of inclination of the first knee pad 30, it is necessary to loosen the bolts 34A and rotate the first bracket 31 along with the first holder 32 along the opening 34B. Then, the bolts 34A can move along the opening 34B. Upon arranging the first knee pad 30 in the desired position, the bolts 34A have to be tightened.

[0023] Similarly, the second holder 42 is attached to the supporting plate 50 by means of bolts 44A which pass through an arcuate opening 44B located in the second holder 42.

[0024] In order to set the angle of inclination of the second knee pad 40, it is necessary to loosen the bolts 44A and rotate the second bracket 41 along with the second holder 42 along the opening 44B. Then the bolts 44A can move along the opening 44B. Upon arranging the second knee pad 40 in the desired position, the bolts 44A have to be tightened.

[0025] The first bracket 31 is attached to the first holder 32 in a slidable manner, thus enabling adjustment of the distance of the first knee pad 30 from the leg by changing the scope of extension of the first bracket 31 from the first holder 32. The ability to extend the first bracket 31 is blocked by tightening a fixing bolt 35.

[0026] Similarly, the second bracket 41 is attached to the second holder 42 in a slidable manner, thus enabling adjustment of the distance of the second knee pad 40 from the user's leg by changing the scope of extension of the second bracket 41 from the second holder 42, regardless of the position of the first knee pad 40. The ability to extend the second bracket 41 is blocked by tightening a fixing bolt 45.

[0027] The first knee pad 30 is pivotable relative to the axis Y1, perpendicular to the axis X1, by means of a first slidable and pivotable coupling 33. The second knee pad 40 is pivotable relative to the axis Y2, perpendicular to the axis X2, by means of a second slidable and pivotable coupling 43. As a result, by setting a proper inclination and rotation of the knee pads 30, 40, and proper extension of the brackets 31, 41, the first knee pad 30 located higher can be arranged above the knee, due to which stabilisation and stretching take place along a short segment and involve one joint only, while the second knee pad 40 located lower than the first knee pad 30 supports the shin, providing the possibility of straightening the knee joint, stretching and protection from hyperextension.

[0028] The first pivotable coupling 33 comprises a first body 33A, which is rotatably attached relative to the axis X1 on the shorter arm of the first bracket 31, as well as a first U-shaped rail 33B attached to the first body 33A rotatably relative to the axis Z1, perpendicular to the axes X1 and Y1, and slidably relative to the axis Y1.

[0029] The second pivotable coupling 43 comprises a second body 43A, which is rotatably attached relative to the axis X2 on the shorter arm of the second bracket 41, as well as a second U-shaped rail 43B attached to the second body 43A rotatably relative to the axis Z2, perpendicular to the axes X2 and Y2, and slidably relative to the axis Y2.

[0030] The first body 33A may comprise a bushing 37, and the second body 43A may comprise a bushing 47.

[0031] In order to set the angle of rotation of the first knee pad 30 relative to the axis Z1, it is necessary to loosen the bolts 39A and rotate the first knee pad 30 to the desired position. The bolts 39A then move along arcuate openings 39B in the first body 33A. Upon arranging the first knee pad 30 in the desired position relative to the axis Z1, it is necessary to tighten the bolts 39A.

[0032] Similarly, in order to set the angle of rotation of the second knee pad 40 relative to the axis Z2, it is necessary to loosen the bolts 49A and rotate the second knee pad 40 to the desired position. The bolts 49A then move along arcuate openings 49B in the second body 43A. Upon arranging the second knee pad 40 in the desired position relative to the axis Z2, it is necessary to tighten the bolts 49A.

[0033] In order to set the angle of rotation of the first knee pad 30 relative to the axis Y1, it is necessary to loosen the bolts 36A and rotate the first knee pad 30 to the desired position. The bolts 36A then move along an elongated opening 36B in the first U-shaped rail 33B. Upon arranging the first knee pad 30 in the desired position relative to the axis Y1, it is necessary to tighten the bolts 36A. The elongated opening 36B extends along the length of the first U-shaped rail 33B.

[0034] Similarly, in order to set the angle of rotation of the second knee pad 40 relative to the axis Y1, it is necessary to loosen the bolts 46A and rotate the second knee pad 40 to the desired position. The bolts 46A then move along an elongated opening 46B in the second U-shaped rail 43B. Upon arranging the second knee pad 40 in the desired position relative to the axis Y1, it is necessary to tighten the bolts 46A. The elongated opening 46B extends along the length of the second U-shaped rail 43B.

Examples

Embodiment Construction

[0014]Figs. 1, 2A-2B, and 3A-3B show an example embodiment of a standing frame with knee supports according to an embodiment of the invention.

[0015]The standing frame has a base 10 with a vertical column 20, to which there are attached supports for keeping a person in an upright position. A chest support 21 is attached to the column 20 in its upper part; below are attached a hip support 22, (opposite which there is a back support 23) and knee supports with knee pads 30, 40. At the bottom, the column 20 has footrests 25. The base 10 has wheels 11 that enable movement of the standing frame. The structure of the standing frame presented herein is merely an example; the knee support according to the invention can also be used with other types of standing frames with features similar to the embodiment presented herein.

[0016]The knee support is shown by means of a detailed example embodiment in Figs. 4A-4B, 5A-5B and 6. The knee support is attached to the standing frame by means of a supp...

Claims

1. A knee support for a standing frame, the knee support comprising a supporting plate (50) for attaching the knee support to the standing frame; a first knee pad (30) rotatably attached to a first L-shaped bracket (31) on its shorter arm; a second knee pad (40) rotatably attached to a second L-shaped bracket (41) on its shorter arm; wherein the longer arm of the first bracket (31) is pivotably attached to the supporting plate (50) near the first end thereof by means of a first holder (32), and the longer arm of the second bracket (41) is pivotably attached to the supporting plate (50) near its second end by means of a second holder (42), so that the first knee pad (30) is located above the second knee pad (40).

2. The knee support according to claim 1, wherein the first knee pad (30) is pivotably attached relative to a first axis (Y1), perpendicular to a second axis (X1), by means of a first slidable and pivotable coupling (33), and the second knee pad (40) is pivotably attached relative to a third axis (Y2), perpendicular to a fourth axis (X2), by means of a second slidable and pivotable coupling (43).

3. The knee support according to claim 2, wherein the first slidable and pivotable coupling (33) comprises a first body (33A) which is rotatably attached relative to the second axis (X1) on the shorter arm of the first bracket (31), and comprises a first U-shaped rail (33B) attached to the first body (33A) rotatably relative to a fifth axis (Z1), perpendicular to the second and first axes (X1) and (Y1), and slidably relative to the first axis (Y1), and wherein the second slidable and pivotable coupling (43) comprises a second body (43A), which is rotatably attached relative to the fourth axis (X2) on the shorter arm of the second bracket (41), and comprises a second U-shaped rail (43B) attached to the second body (43A) rotatably relative to a sixth axis (Z2), perpendicular to the fourth and third axes (X2) and (Y2), and slidably relative to the third axis (Y2).

4. A standing frame comprising knee supports according to any of previous claims.

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