Ankle training and / or rehabilitation device and method for controlling such a device

Abstract

The invention relates to a training and / or rehabilitation device (1) comprising: a first support (10) for supporting a first foot (P1) of a subject, the first support (10) being movable relative to a bearing surface (5) and having a first bearing face (10A) for the first foot; and a second support (20). The first support (10) includes a first fastening system (15, 16) for the foot (P1) on the first support (10). The first support (10) is pivotally mounted relative to the bearing surface (5) about a single first pivot axis (BB) substantially parallel to the bearing surface, the first pivot axis (BB) making an angle (β) with respect to a first external direction (CC) of the foot (P1) which is within a range between 13° and 33°. (See Figure 2 for abbreviations)

Description

Title of the invention: Device for training and / or rehabilitating an ankle and method for controlling such a device Technical field

[0001] The invention relates to the field of apparatus and devices for rehabilitation of human joints and in particular of the ankle.

[0002] The invention relates more specifically to a device for training and / or rehabilitating an ankle and a training and / or rehabilitating method. State of the prior art

[0003] In the case of a lateral sprain, that is to say the vast majority of ankle sprain situations, without appropriate rehabilitation, the cases of recurrence are relatively high. Proprioception and post-traumatic re-musculation work are therefore essential to avoid such a recurrence. As a result, rehabilitation and ankle training protocols and devices dedicated to this proprioception and re-musculation work have been developed.

[0004] The devices conventionally used are generally based on a platform made unstable, for example by means of a half-sphere, a half-cylinder or a contact edge as an unstable contact surface of said platform. However, it is known that the most important muscles for reacting to an inversion of the foot are the evertor muscles. If such a platform allows for proprioception and overall re-musculation work, it is only based on uncontrolled work in terms of directions, angles, forces and is in no way adapted to target the evertor muscles. Thus, the proprioception and re-musculation work permitted by this type of device is not totally adapted and may require longer ankle rehabilitation than a more suitable device could allow.

[0005] To overcome these drawbacks, there are training and / or rehabilitation devices, such as those taught by documents FR2818912A1, FR2641183A1 and EP1767249B1, which make it possible to stress the ankle in certain directions of instability, for some of them, with the application of a resistance force. Thus, the possibility of defining the directions of instability and the possible application of constraints makes it possible to optimize the rehabilitation and muscle building work of the ankle. This work can be better targeted and be more effective than that allowed by the unstable platforms mentioned above, the rehabilitation of the ankle is improved.

[0006] However, these devices are not perfectly adapted.

[0007] For some of these devices the axis of rotation of the instability is non-congruent with the natural axis of rotation of the ankle, which is poorly adapted and results in muscular work that is also not or only slightly adapted (instability requiring, for example, the extensor muscles, flexor muscles, etc.).

[0008] Similarly, for some of these devices, the fact that the physiotherapist must himself define the direction(s) of instability makes use difficult. However, the directions of instability conducive to ankle rehabilitation work are difficult to identify anatomically, which makes this adjustment difficult. In addition, adapting the footwear to the configuration of the patient's foot often impacts the settings of the directions of instability, which does not allow a physiotherapist to choose a single setting for all of his patients.

[0009] For some of these devices, the positioning of the foot is done by poorly adapted tightening systems which leave the foot with significant degrees of freedom and mean that the work carried out is more global work of the ankle muscles, rather than the specific work of the evertor muscles.

[0010] Finally, for some of these devices, only one foot is positioned on its mobilization system, without taking into account the second foot, which leaves the patient the freedom to choose postures in which he will mobilize muscles other than the muscles to be re-educated.

[0011] Thus, there would be an interest in providing a training and / or rehabilitation device which can provide specific muscular work and effective proprioception work without requiring a physiotherapist to define the direction of instability to ensure such specificity and effectiveness. Statement of the invention

[0012] The invention aims to meet the above needs.

[0013] The invention relates to this end to a device for training and / or rehabilitating at least one first ankle of a subject, the training and / or rehabilitating device comprising: - at least one support surface by which the training and / or rehabilitation device is intended to be supported by a ground, - a first support intended to support a first foot of the subject corresponding to the first ankle, the first support being mounted to move relative to the support surface and having a first support face for the first foot, - a second support intended to support a second foot of the subject and having a second support face, the first support and the second support being arranged, in at least one configuration of the training and / or rehabilitation device in which the first and second support faces are parallel to the support surface, at the same distance from the at least one support surface so that the first and second bearing faces are at a substantially equal height with respect to the ground in said at least one configuration, the first support comprises a first system for fixing the first foot on the first support shaped to fix a first orientation and a first positioning of the first foot relative to the first support, said first orientation and first positioning defining a first external direction of the first foot corresponding to a projection of an external edge of a mid-foot of the first foot on the first bearing face, the second support having a system for positioning the second foot in order to define a second orientation and a second positioning of the second foot on the second support, the first support being pivotally mounted relative to the bearing surface around a single first pivot axis substantially parallel to the bearing surface,the first pivot axis making an angle with respect to the first external direction which is included in a range between 13° and 33°, or even between 18° and 28° and advantageously between 21° and 25° according to a direction of rotation going from the inside to the outside of the first foot, and intercepting a projection of a heel of the first ankle of the subject on the first support face when the orientation of his first foot is fixed by the first fixing system.

[0014] With such a device, the combination of the first fixation system and the mounting of the first pivoting support relative to the support surface ensures that the rehabilitation of the foot is carried out in a direction corresponding substantially to a horizontal projection of the Henke axis, in such a way as to provide optimized stress on the ankle muscles and especially the evertor muscles. Thus, the proprioception and muscle building work is optimized. In addition, this optimization is also enabled by the correct positioning of the first foot, authorized by the first fixation system and by the positioning system of the second foot, thereby ensuring that the body is well positioned and that the pivot axis of the first support is in correspondence with a horizontal projection of the Henke axis of the first ankle. This positioning, moreover, can be done without the intervention of a physiotherapist.

[0015] Furthermore, the use of two supports with such an arrangement ensures that the subject is able to use the support in a standing position. This standing position, not necessarily permitted by the devices of the prior art, is a position where the body weight is involved in the exercise, which is interesting due to the similarity with the real constraints that the ankle undergoes, which contributes significantly to the optimization of the proprioception and muscle building work enabled by the training and / or rehabilitation device.

[0016] If, as indicated in the introductory part of this document, the training and / or rehabilitation device according to the invention is particularly suitable for enabling muscle work and post-traumatic proprioception work, the present device can also be used preventively in the context of sports training for a subject who has not suffered any trauma. Indeed, such work to strengthen an athlete's ankles makes it possible to reduce the risk of injuries which could penalize their sporting practice.

[0017] It will be noted that advantageously, the support of the support surface on the ground is stable and in particular of the hyperstatic type. In this way, the subject is able to use the device according to the invention in complete safety.

[0018] In this document, the references to the different parts of the subject's foot, in particular the forefoot, the midfoot and the rearfoot, correspond to the anatomical definitions of said parts. Thus, by forefoot, midfoot and rearfoot, is meant, here and in the rest of this document, respectively the part corresponding to the phalanges / metatarsals assembly of said foot, the part corresponding to the cuboid, medial, intermediate and lateral cuneiform bones, and navicular assembly of said foot and the part corresponding to the talus and calcaneus assembly of said foot. In the same way, by median axis of a foot, is meant the axis of the foot passing through the center of the heel and between the second and third metatarsals.

[0019] The first fixing system, by making it possible to fix the positioning and orientation of the first foot, can, in particular, provide a fixation of the foot on the first support. With such support, the first foot is thus secured against tearing when the subject uses the training and / or rehabilitation device and is thus held in position during the pivoting of the first support. In this way, the proprioception and / or remusculation work is particularly optimized and the subject is reassured with regard to the risks of displacement of his foot during the use of the device.

[0020] The system for positioning the second foot may comprise a second system for fixing the second foot on the second support shaped to fix the second orientation and the second positioning of the second foot relative to the second support, said second orientation and second positioning defining a second external direction of the second foot corresponding to a projection of an external edge of a mid-foot of the second foot on the second support face, in which the second support is pivotally mounted relative to the bearing surface around a single second pivot axis substantially parallel to the bearing surface, the second pivot axis forming an angle with respect to the second external direction which is included in a range between 13° and 33°, or even between 18° and 28° and advantageously between 21° and 25° in a direction of rotation going from the inside to the outside of the second foot, and intercepting a projection of a heel of the second ankle of the subject on the support face when the orientation of his second foot is fixed by the second fixing system, the training and / or rehabilitation device preferably comprising a pivoting locking system configured to allow pivoting locking of the first support and the second support.

[0021] In this way, the device allows training and / or rehabilitation of the subject's second ankle, with the same advantages as for the first ankle.

[0022] The second support may be integral in movement with the support surface with the second support face arranged parallel to the support surface.

[0023] Thus, the training and / or rehabilitation device can be simpler and therefore less expensive to manufacture while still benefiting from the advantages linked to the invention.

[0024] The training and / or rehabilitation device may further comprise at least one first constraint element arranged to exert a constraint force on the pivoting of the first support in a direction of rotation of inversion of the first foot of the subject which is intended to be supported there, the at least first constraint element being preferentially selected from the group of gravitational constraint elements, elastic constraint elements and electromagnetic constraint elements.

[0025] Such a constraint element allows active training and / or rehabilitation of the first ankle and thus optimization of the work offered by the device.

[0026] The first system for fixing the first foot to the first support may comprise a first strap arranged to hold a forefoot of the first foot in contact with the first support face and at least one first wedge on which an external edge of the midfoot and / or a rearfoot of the first foot is intended to come into contact when it is supported by the first support face, the first strap and the first wedge being preferentially arranged to constrain the first foot to bear on the first support but also to constrain an external side of the first foot to bear on the first wedge so as to fix the first external direction.

[0027] With such a system the position and orientation of the first foot are perfectly fixed, while ensuring, thanks to the strap, good support of the first foot throughout the use of the training and / or rehabilitation device by the subject.

[0028] The first binding system may further comprise a second wedge on which an inner edge of the midfoot and / or a rearfoot of the first foot is intended to come into contact when it is supported by the first bearing face, said second wedge being able to be mounted movably relative to the first support, the first wedge being integral with the first support.

[0029] In this way, the training and / or rehabilitation device allows good support of the first foot regardless of the latter's morphology.

[0030] The first strap may comprise a support portion intended to come to bear on an external part of the top of the forefoot of the first foot of the subject, said support portion preferably having an external part and an internal part succeeding one another in a lateral direction of the first foot intended to be held by the strap going from the outside to the inside of said first foot, the external part having a greater hardness than that of the internal part.

[0031] Such a configuration provides a plating of the external part of the first foot while it is highly mobilized in the exercises permitted by the training and / or rehabilitation device. This provides particularly optimized proprioception and muscle building work offered by the device according to the invention.

[0032] The at least one first constraint element may comprise at least one first elastic return element and preferably a second elastic return element, or even a third or more elastic return elements, the training and / or rehabilitation device further comprising an engagement system configured to engage said at least one first elastic return element with the first support, and, when the first constraint means comprise a second elastic return element, or even a third elastic return element, the engagement system may have a configuration in which it engages the second elastic return element, or even the third elastic return element with the first or more support.

[0033] Such a constraint element allows the training and / or rehabilitation device to perform both relatively unconstrained work, i.e. under “body weight”, lightened if the subject is seated or complete if the patient is standing, particularly aimed at proprioception when the first support is not engaged with an elastic return element, and more constrained work particularly aimed at muscle building / re-muscle building, when the first support is engaged with an elastic return element.

[0034] The training and / or rehabilitation device may further comprise at least one sensor capable of providing information relating to a positioning and / or angular displacement of the first support relative to the support surface.

[0035] Such a sensor makes it possible to qualify the subject's reaction to the instability caused by the pivoting of the first support and the possible stress applied to it.

[0036] The training and / or rehabilitation device may further comprise a first locking element configured to lock the first support in a rest position in which the first bearing face is parallel to the bearing surface, the first locking element preferably being automated in such a way as to authorize a command to switch the locking system from an unlocked configuration in which the first support is free to leave the rest position to a locked configuration in which the first support is held in the rest position.

[0037] When the training and / or rehabilitation device comprises a system for positioning the second foot comprising a second fixing system and comprises a pivoting locking system, the pivoting locking system may comprise said first locking element.

[0038] The training and / or rehabilitation device may further comprise at least one first stop configured to limit the angle of rotation of the first support with respect to the support surface, said stop preferably providing a rotation stop in the direction of inversion rotation of the first foot of the subject which is intended to be supported by the first support, the at least one first stop preferably being adjustable.

[0039] In this way, the pivoting amplitude of the first support can be limited and thus the stress on the first ankle by the training and / or rehabilitation device can be adapted as closely as possible to the training and / or rehabilitation needs of the subject.

[0040] Method for controlling a device for training and / or rehabilitating at least a first ankle of a subject according to the invention, comprising the following steps: - placing the first support in a rest position in which the first bearing face is parallel to the bearing surface, - release of the first support from its rest position with preferentially an application of a constraint force to the pivoting of the first support in a direction of rotation of inversion of the first foot of the subject intended to be supported there, - detection of a return of the first support to the rest position.

[0041] A control method allows the implementation of the training and / or rehabilitation device according to the invention. Brief description of the drawings

[0042] The present invention will be better understood on reading the description of exemplary embodiments, given purely for informational purposes and in no way limiting, with reference to the appended drawings in which:

[0043] [Fig. 1A] illustrates a top view of a first example of arrangement of a training and / or rehabilitation device according to the invention,

[0044] [Fig.lB] illustrates a top view of a second example of arrangement of a training and / or rehabilitation device according to the invention,

[0045] [Fig.2] illustrates schematically and in perspective a drive device and / or rehabilitation according to a first embodiment of a training and / or rehabilitation device according to the invention,

[0046] [Fig.3] illustrates schematically and in perspective a variant of the device training and / or rehabilitation according to the first embodiment illustrated in [Fig.2],

[0047] [Fig.4] illustrates in a side perspective view a drive device and / or rehabilitation according to a second embodiment corresponding to a practical implementation of the invention, integrating a support bar,

[0048] [Fig.5A] illustrates in a side perspective view the training and / or rehabilitation device according to a second embodiment in which the holding bar has been removed,

[0049] [Fig.5B] illustrates in a rear view the training and / or rehabilitation device according to a second embodiment with the holding bar removed,

[0050] [Fig.5C] illustrates in a front view the training and / or rehabilitation device according to a second embodiment with the support bar removed,

[0051] [Fig.5D] illustrates in a side view the training and / or rehabilitation device according to a second embodiment with the support bar removed,

[0052] [Fig.6] illustrates in a perspective view the constraint element equipping the training and / or rehabilitation device,

[0053] [Fig.7] illustrates schematically and in perspective a third embodiment of a training and / or rehabilitation device according to the invention in which the training and / or rehabilitation device comprises a separate element for each of the subject's feet.

[0054] Identical, similar or equivalent parts of the different figures bear the same numerical references so as to facilitate the transition from one figure to another.

[0055] The different parts represented in the figures are not necessarily on a uniform scale, in order to make the figures more readable.

[0056] The different possibilities (variants and embodiments) must be understood as not being mutually exclusive and can be combined with each other.

[0057] Detailed description of particular embodiments

[0058] Figures 1A and 1B illustrate, in a top view, two examples of arrangement of a training and / or rehabilitation device 1 for a subject according to the invention.

[0059] It can thus be seen in these figures that such a training and / or rehabilitation device 1 comprises: - at least one support surface 5, not shown in figures 1A and 1B and visible in [Fig.2], by which the training and / or rehabilitation device 1 is intended to be supported by a ground 2, - a first support 10 intended to support a first foot PI of the subject corresponding to the first ankle, the first support 10 being mounted to move relative to the support surface 5 and having a first support face 10A for the first foot, - a second support 20 intended to support a second foot P2 of the subject corresponding to a second ankle, the second support 20 being mounted to move relative to the support surface 5 and having a second support face 20A for the second foot P2.

[0060] Of course, if in the present configurations the support surface 5 is materialized by a face of the training and / or rehabilitation device 1, this support surface can also be virtual and be for example defined by lower edges of the training and / or rehabilitation device 1 by which the device is supported on the ground. This possibility is notably shown by figures 4 to 5D in the context of the second embodiment in which the lower edges are provided by the support profiles of the base.

[0061] The first support 10 and the second support 20 are arranged, in a rest configuration of the training and / or rehabilitation device 1 in which the first and second bearing faces 10A, 20A are parallel to the bearing surface 5, at the same distance from the at least one bearing surface 5 so that the first and second bearing faces 10A, 20A are at a substantially equal height relative to the ground in said at least one configuration.

[0062] According to the principle of the invention, the first support 10 comprises a first fixing system 17A for fixing the first foot PI to the first support 10, shaped to fix a first orientation and a first positioning of the first foot PI relative to the first support 10, said first orientation and first positioning defining a first external direction (or external straight line) of the first foot CC corresponding to a projection of an external edge of a mid-foot of the first foot PI onto the first bearing face 10A. In these configurations, the first fixing system comprises a single wedge 17A, having a non-referenced pad, on which an external part of the first foot comes to bear. As a variant, the entire wedge 17A can advantageously be covered with foam to have more pleasant contact with the external edge of the foot.

[0063] According to the present configurations illustrated in Figures 1A and 1B, in a manner identical to the first support 10, the second support 20 comprises a second fixing system 27A of the second foot P2 on the second support 20 shaped to fix a second orientation and a second positioning of the second foot P2 relative to the second support 20, said second orientation and second positioning defining a second external direction (or second external straight line) of the first foot C'-C' corresponding to a projection of an external edge of a mid-foot of the second foot P2 on the second bearing face 20A. In a manner identical to the first fixing system, the second fixing system comprises a single wedge 27A, having a non-referenced cushion, on which an external part of the forefoot of the second foot PI, P2 comes to bear on said cushion.

[0064] According to these configurations of the training and / or rehabilitation device 1, the single wedge 17A, 27A, which is associated with each of the first and second supports 10, 20, is preferably adjustable in order to offer an adaptation to the morphology of the first and second feet PI, P2. Such an adjustment, not shown, can be provided for example by means of a wedge 17A, 27A mounted mobile in translation, this with a fixed orientation with respect to the corresponding support 10, 20, and placed in contact with the foot or else adjusted with a positioning indication depending on a morphological datum of said foot, such as a shoe size or a measurement of the width of the foot. Such an adjustment can thus make it possible to adjust the positioning of the foot PI, P2 with respect to the movement of the first and second supports 10, 20 relative to the support surface 5.As indicated above, this single wedge 17A, 27A preferably comprises a cushion, not referenced, made of an elastically deformable material, such as foam. This cushion is advantageously arranged so that an external part of the forefoot of the corresponding foot PI, P2 comes to bear on the latter when said foot PI, P2 has its orientation and positioning fixed by the fixing system. It will be noted that, of course, according to a variant not illustrated and in order to finely adjust the orientation and positioning of the foot, the mobile mounting of the wedge 17A, 17B can comprise an angular adjustment of the wedge having a degree of freedom between an angle -3 to + 3° with respect to a working direction (corresponding to the projection of the Henke axis of the foot PI, P2) in order to adapt to any morphological particularity of the feet PI, P2 of the subject.

[0065] Of course, these configurations illustrate an example of conformation and arrangement of the first and second supports 10, 20. Thus, the shape and dimensions of the first and second supports 10, 20 can be modified and adapted without departing from the scope of the invention. Thus, for example, if the inner edges (i.e., edges facing each other) of the first and second supports 10, 20 are rectilinear and parallel to each other, this is a choice of the inventors. Thus, the first and second supports 10, 20 can also have a curved shape, to be at closer to the shape of the foot PI, P2, than a generally rectangular shape to facilitate its manufacture, without departing from the scope of the invention. It will also be noted that, preferably, the first and second supports, and their respective fixing systems, can be shaped in such a way that the centers of the projections T1, T2 of the heels of the first and second feet PI, P2 on the corresponding bearing faces 10A, 20A are at a distance of between 18 and 40 cm, or even between 20 and 30 cm or even between 22 and 28 cm, this distance being particularly advantageously substantially equal to 25 cm.

[0066] According to the invention, the first support 10 is pivotally mounted relative to the support surface 5 around a single first pivot axis BB substantially parallel to the support surface, the first pivot axis BB making an angle [3 with respect to the first external direction CC which is substantially equal to 23° in a direction of rotation going from the inside to the outside of the first foot PI, and intercepting the projection T1 of a heel of the first ankle of the subject on the first support face when the orientation of his first foot PI is fixed by the first fixing system. In such a configuration, the pivot axis BB corresponds substantially to a projection of the Henke axis of the first foot on the first support face 10A, which is ideal for rehabilitation and muscle building of the first ankle.

[0067] It will be noted that in such a configuration, the pivot axis BB makes substantially an angle a of 16° with respect to a median axis MM of the first foot PI, which corresponds to a projection of the Henke axis onto the first bearing face 10A.

[0068] It will be noted that according to a more general possibility of the invention allowing good rehabilitation and muscle building of the subject's first ankle, the angle [3 with respect to the first external direction CC can be included in a range between 13° and 33°, or even between 18° and 28° and advantageously between 21° and 25° according to a direction of rotation going from the inside to the outside of the first foot PI.

[0069] In the configurations illustrated in Figures 1A and 1B, the second support 20 has a similar configuration. Thus, the second support 20 is pivotally mounted relative to the bearing surface 5 around a single second pivot axis B'-B' substantially parallel to the bearing surface, the second pivot axis B'-B' making an angle [3' with respect to the second external direction C'-C' which is substantially equal to 23° in a direction of rotation going from the inside to the outside of the second foot P2, and intercepting a projection T2 of a heel of the second ankle of the subject on the second bearing face 20A when the orientation of his second foot P2 is fixed by the second fixing system 27. In a manner identical to the first support 10 and in general, the angle [3' with respect to the second external direction C'-C' can be included in a range between 13° and 33°, or even between 18 and 28° and advantageously between 21° and 25° in a direction of rotation going from the inside to the outside of the second foot P2.

[0070] The configurations of [Fig.lA] and [Fig.lB] are distinguished only by the opening angle between the first and second orientation CC, C'-C' defined by the first and second fixing systems 17A, 27A, the angles [3, [3' between the pivot axes BB, B'-B' and the first and second direction CC, C'-C being identical in these two configurations. Indeed, in the case of the configuration of [Fig.lA], which is particularly advantageous, the first and second feet PI, P2 with their first and second orientation, defined by their median axes MM, M'-M', fixed by the first and second fixing system 17A, 27A define an angle of 12°. In the second configuration illustrated in [Fig.lB], the first and second feet PI, P2 with their first and second orientation fixed by the first and second fixing system 17A, 27A define an angle of 20° between the median axes MM, M'-M' of the first and second feet PI, P2.It should be noted that in a usual configuration of the invention, the first and second feet PI, P2 with their first and second orientation fixed by the first and second fixing system 17A, 27A define an angle between the median axes MM, M'-M' of the first and second feet PI, P2 of between 0° and 30°, preferably being between 6° and 18°, or even between 9° and 15°. This angle between the median axes MM, M'-M' of the first and second feet PI, P2 is particularly advantageously, as is the case in [Fig. 1A], substantially equal to 12°.

[0071] It will be noted that according to a possibility not shown in the present configurations illustrated by figures 1A and 1B and making it possible to optimize the muscle building (or re-musculation) work of the ankle, the training and / or rehabilitation device 1 can also comprise at least one of the following elements: - at least one first constraint element arranged to exert a constraint force on the pivoting of the first support 10 in a direction of rotation of inversion of the first foot PI of the subject which is intended to be supported there, - at least one sensor capable of providing information relating to a positioning and / or angular displacement of the first support 10 with respect to the bearing surface 5, - a first locking element configured to lock the first support in a rest position in which the first bearing face 10A is parallel to the bearing surface 5, and - at least one first stop configured to limit the angle of rotation of the first support 10 with respect to the support surface 5.

[0072] In order to illustrate more specifically some of these elements of a training and / or rehabilitation device 1 according to the invention, [Fig. 2] illustrates such a device according to a first embodiment. In this first embodiment, only the first support 10 is movable with respect to the support surface 5, the second support 20 being fixed with respect to the support surface 5 and comprising a positioning system 25A including an imprint of the second foot P2 on which the subject must position his second foot P2 as an alternative to a second fixing system 27A as described in the context of the configurations of figures 1A and 1B. Apart from these differences and the use of a first fixing system which is advantageous due to the use of a first strap 15, 16, this first embodiment has a configuration in accordance with that illustrated in [Fig.1A].

[0073] In this first embodiment, the second support 20 is integral in movement with the support surface 5 with the second support face 20A arranged parallel to the support surface 5. A connection is provided by a second support merged with an upper surface of the training and / or rehabilitation device.

[0074] It can also be seen in [Fig. 2] that the only first support 10 being pivotally mounted with respect to the support surface 5, the training and / or rehabilitation device 1 is dedicated to the left foot PI of the subject. Of course, as a variant, it is perfectly conceivable, for example by providing a first and a second support 10, 20 independent of each other as described below in connection with [Fig. 7], to provide a training and / or rehabilitation device 1 having a first support 10 shaped to allow work on both the left and right foot PI, P2, without demonstrating any inventive activity.

[0075] In order to ensure good maintenance of the first foot PI on the first support 10 and good maintenance of the first orientation and the first positioning, the first fixing system comprises: - a first strap 15, 16 arranged to hold a forefoot of the first foot PI in support of the first support face - a first wedge 17A on which an external edge of the rear foot of the first foot PI is intended to come into contact when it is supported by the first support face, - a second wedge 17B on which an internal edge of the rear foot of the first foot PI is intended to come into contact when it is supported by the first support face 10A.

[0076] In the present embodiment, the first strap 15, 16 and the first wedge 17A are arranged to bear on an external side of the first foot PI so as to fix the first external direction CC. Thus in this first embodiment, it is this assembly of the first strap 15, 16 and the first wedge 17A which makes it possible to define the first external direction CC whereas in the first and second configurations illustrated in FIGS. 1A and 1B, it was the single first wedge 17A which allows such a definition.

[0077] In order to allow adjustment of the first fixing system to the morphology of the subject's first foot PI: - the first strap 15, 16 is adjustable to allow adaptation to the morphology of the foot PI, this by comprising a support portion 15, intended to fold down to rest on an external part of the top of the forefoot of the first foot and provided with a closure system, such as a buckle, and a strap portion 16 shaped to cooperate with the closure system so as to allow the foot PI to be held pressed against the first support face 10A by the first strap 15, 16, - the second wedge 17B is mounted to move relative to the first support 10 so as to allow the external part of the first foot PI to rest on the first wedge 17A.

[0078] As shown in [Fig. 2], the bearing face 20A of the second support comprises a single imprint of the second foot 25A as a positioning system, it is of course conceivable that the positioning system is different without departing from the scope of the invention. Thus, it is perfectly conceivable that, as a variant, the positioning system 25A comprises a plurality of markers, each marker corresponding to a foot morphology or to foot placement information, or even comprises one or more shims of the same type as those of the configurations of Figures 1A and 1B or those which are presented in connection with [Fig. 7].

[0079] It will be noted that if in the present embodiment, the first and second wedges 17A, 17B are arranged to bear on respectively an external edge and an internal edge of the rear foot, it is perfectly conceivable without departing from the scope of the invention, that at least one of the first and second wedges 17A, 17B is arranged to bear on an edge of the midfoot instead of the rear foot.

[0080] The mobile mounting of the second wedge 17B, not shown in [Fig.2], is advantageously referenced with respect to a morphological datum of said foot, such as a size of the subject's foot PI. This mobile mounting of the second wedge 17B may be of different types without departing from the scope of the invention, such as, for example, a sliding friction mounting on the first support 10 or a removable mounting with a plurality of locations arranged on the first support, each corresponding to a range of values ​​of said morphological datum.

[0081] Similarly, in order to provide optimized support for the first foot on the first support, the support portion 15 is in the form of a wide band designed to conform to and be pressed against the forefoot and the base of the kick when this is tensioned by the strap portion 16 using a tensioning system. To ensure good support for the foot while maintaining comfortable contact for the top of the foot, it is provided that the support portion 15 has an external part 15A and an internal part 15B following one another in a lateral direction of the first foot PI, each comprising a respective comfort foam.

[0082] In order to promote the proprioception and muscle building work offered by the device according to the invention, it is advantageous to firmly press the external part of the foot which is very mobilized in the exercises permitted by the device, and for this purpose, the comfort foam of the external part 15A can comprise a relatively rigid foam, for example a foam of hardness 70 SHORE A. The comfort foam of the internal part 15B which covers the internal part of the foot, less mobilized in the exercises permitted by the device and more sensitive, can comprise a foam of less hardness than that of the external part 15A, for example a foam of hardness 40 SHORE A. Thus, the external part 15A has a greater hardness than that of the internal part 15B.

[0083] If in the present embodiment, the first constraint element is not shown, with the exception of an adjustment lever 186, in accordance with the possibility of the invention, such a first constraint element is arranged to exert a constraint force on the pivoting of the first support 10 in a direction of rotation of inversion of the first foot PI of the subject which is intended to be supported there. Such a first constraint element can in particular be selected from the group comprising: - the gravitational constraint elements, such as one or more masses arranged to constrain the first support 10 to pivot in the direction of inversion of the first foot PI, - elastic constraint elements, such as springs and elements made of elastically deformable materials, - the electromagnetic constraint elements, such as an electric motor arranged to constrain the first support 10 to pivot in the direction of inversion of the first foot PI.

[0084] These elements all have the ability to constrain pivoting. It will be noted that by using an electromagnetic constraint element as a means of constraining pivoting, such a design can also allow operation in passive resistance or friction, and offer exercises where the patient is the driving force and fights against a force slowing the pivoting of the first support 10.

[0085] In the context of the embodiments of the invention, the at least one first constraint element may comprise, as specified below in the context of the second embodiment illustrated in Figures 4 to 6, a plurality of constraint elements elastic return 181, 182, 183 associated with an engagement system 185. Thus according to this possibility, the lever 186 can allow control of the engagement system 185 in order to allow engagement of one or more elastic return elements 181, 182, 183 with the first support 10 and thus allow control of the application of the constraint force to the pivoting of the first support 10 and its adjustment.

[0086] In the context of the present embodiment, the engagement system is configured to allow engagement of each of the elastic return elements 181, 182, 183 with the first support 10 independently of the engagement or non-engagement of the other return elements 181, 182, 183, thus offering great flexibility in the applicable constraint force values. Of course, other configurations of the engagement system are perfectly conceivable without departing from the scope of the invention. Thus, for example, the engagement system may be configured to allow individual coupling of the first support 10 with each of the constraint elements, the accessible constraint force values ​​corresponding only to those provided by each of the constraint elements taken individually.In an identical manner, it is perfectly conceivable that the engagement system is adapted to allow an incremental coupling of the constraint elements, the engagement of the second constraint element necessarily having to be done with the first opposite element, and that of the third constraint element requiring the coupling of the first and second constraint elements.

[0087] Similarly, if the present embodiment does not show a first locking element configured to lock the first support 10 in the rest position, [Fig. 2] nevertheless shows a mechanical actuator 19 capable of implementing such locking. In this way, from such a mechanical actuator 19, the subject or the physiotherapist is able to unlock the first support 10 in order to allow it to pivot with respect to the support surface 5 and to begin the muscle building and proprioception work of the subject's ankle. Of course, if the first locking element is not shown in the present application, it may consist of a simple retractable latch, capable of blocking the first support 10 in its rest position when it is in an active position, i.e. not retracted.

[0088] It will also be noted, even if this is not shown in figures 1A to 2, that the first support and / or its pivot axis BB can be equipped with at least one sensor capable of providing information relating to a positioning and / or angular displacement of the first support 10 with respect to the support surface 5. Such a sensor can thus also be: - a positioning sensor, such as a switch (limit switch, bulb switch or a reed switch), capable of providing information when the first support occupies a well-defined position in which it requests said switch, - an angular sensor capable of providing angular positioning information for the first support 10, or - an accelerometer capable of providing information concerning the movement of the first support 10.

[0089] Such a sensor makes it possible to qualify the reaction of the subject with respect to the instability caused by the pivoting of the first support 10 and the possible constraint applied to it by the at least one first constraint element 18. Such a qualification of the reaction of the subject can allow the physiotherapist to know the muscular tone and to qualify the proprioception of the subject and to possibly adjust the configuration of the training and / or rehabilitation device 1.

[0090] According to a usual possibility of the invention which is presented further in connection with the second embodiment, the training and / or rehabilitation device 1 may also comprise one or more stops, not shown in [Fig. 2], in order to limit the angular range of pivoting of the first support 10 with respect to the support surface 5. Thus, according to this usual possibility, two stops may be provided, a first stop arranged to limit the pivoting of the first support 10 in the direction of inversion rotation of the first foot PI, a second stop arranged to limit the pivoting of the first support 10 in the direction of eversion rotation of the first foot PI. The first stop thus makes it possible to limit the possible pivoting of the first support in order to avoid stressing the first ankle on an extreme movement which could be painful, or even harmful, for the subject.The second stop, when it corresponds to a pivoting beyond the rest position of the first support 10, allows for a stress on the first ankle in eversion, which can be useful in the context of proprioception and rehabilitation work on said ankle.

[0091] The first stop can be adjusted to allow pivoting of the first support 10 in the direction of inversion rotation of the first foot PI, maximum between 20° and 45°, preferably between 25° and 40° and particularly advantageously between 32.5° and 37.5° or even substantially equal to 35°. In a similar manner, the second stop can be adjusted to allow pivoting of the first support 10 in the direction of eversion rotation of the first foot PI beyond the rest position, according to a maximum angle between 5° and 22°, preferably between 10 and 18° or even substantially equal to 15°. In both cases, of course, the 0° of rotation corresponds to the rest position of the first support 10. Thus, in an exemplary embodiment, the first and second stops can be arranged to allow the first support 10 to pivot by 35° in inversion and 15° in eversion relative to the rest position.

[0092] Advantageously, the first and second stops may be adjustable so as to allow the physiotherapist to adapt the pivoting range accessible by the first support 10 so as to adapt this range to the state of recovery of the subject and / or to the flexibility of the ankle joint. Alternatively, the device may comprise a plurality of first stops and / or second retractable stops, said stops being placed in the non-retracted state, i.e. blocking the pivoting of the first support, depending on the desired angular range.

[0093] In the context of the use of such a training and / or rehabilitation device 1 according to the invention, the device can be controlled from a control method comprising the following steps: A - placing the first support 10 in the rest position in which the first bearing face 10A is parallel to the bearing surface 5, B - release of the first support 10 from its rest position with preferentially an application of a constraint force to the pivoting of the first support in a direction of rotation of inversion of the first foot PI of the subject intended to be supported there, D - detection of the position of the return of the first support 10 in the rest position.

[0094] Furthermore, when in accordance with the present embodiment the training and / or rehabilitation device 1 comprises at least one sensor, there may also be provided between step B and D a step C - detection of the maximum angular position in inversion. Similarly, once the first support 10 in the rest position has been detected in step D, there may be provided a step E - locking of the first support 10 in the rest position.

[0095] Of course, when required, as is generally the practice, a repetition of the stress exerted by the training and / or rehabilitation device 1 is possible; thus, step C, and the possible step D of the control method according to the invention can be repeated in order to obtain the number of stresses required.

[0096] Similarly, if in the present embodiment, the training and / or rehabilitation device 1 is only adapted to solicit the first foot PI of the subject (the left foot), when the training and / or rehabilitation device is adapted to allow the provision of a solicitation of the second foot P2, as is the case of the variant described below in connection with [Fig. 3] and of the second and third embodiments described in connection with figures 4 to 6, the training and / or rehabilitation device 1 is capable of allowing the implementation of a control method comprising identical steps for the second support 20.

[0097] During this command, when the device is equipped with at least one sensor, it is possible to obtain information relating to positioning and / or movement angular displacement of the first support 10 in order to qualify the movement of the first support 10 between the release step and the detection of the return of the first support 10 to the rest position.

[0098] [Fig. 3] illustrates a variant of the training and / or rehabilitation device 1 according to the first embodiment which differs from a device according to the first embodiment in that the second support 20 is pivotally mounted relative to the support surface 5 and comprises a second fixing system, as a positioning system comprising a first and a second wedge 27A, 27B intended for the second foot P2 and which is capable of receiving a strap of the same type as that of the first fixing system 15, 16, 17A, 17B whose conformation is adapted to the second foot P2.

[0099] Thus, according to this variant, the second support is also pivotally mounted relative to the support surface 5 and allows, unlike the training and / or rehabilitation device 1 according to the first embodiment, training and / or rehabilitation 1 of both the right foot P2 and the left foot PI.

[0100] Such a drive of each of these feet PI, P2 preferably having to be done independently of one another, the training and / or rehabilitation device 1 comprises a pivoting locking system configured to allow pivoting locking of the first support and the second support 10, 20 in their first position. Thus, in a manner similar to that of the first embodiment, the training and / or rehabilitation device 1 according to the present variant comprises a second locking element configured to lock the second support 20 in the rest position, [Fig. 3] nevertheless shows a second mechanical actuator 29 capable of implementing such locking.In this way, from such a second mechanical actuator 29, the subject or the physiotherapist is able to unlock the second support 20 in order to allow it to pivot with respect to the support surface 5 and to begin the proprioception work of the subject's second ankle. It will be noted that preferably, the mechanical actuator 19 and the second mechanical actuator 29 are shaped to only allow the release of the pivoting of one support 10, 20 among the first and second supports 10, 20 at the same time.

[0101] Of course, according to this variant, the second support 20 being pivotally mounted, the at least one constraint element is also arranged to exert a constraint force on the pivoting of the second support 20 in a direction of rotation of inversion of the second foot P2 of the subject which is intended to be supported there. Thus the adjustment lever 186 can also allow control of the engagement system in order to allow engagement of one or more elastic return elements 181, 182, 183 with the second support 20 and thus allow control applying the constraint force to the pivoting of the second support 20 and adjusting it. Thus, according to this possibility, the at least one constraint element is configured to apply a constraint force to the pivoting of both the first support 10 and the second support 20. Of course, as an alternative, the training and / or rehabilitation device 1 may comprise, in addition to the first constraint element configured to apply a constraint force to the pivoting of the first support 10, a second constraint element configured to apply a constraint force to the pivoting of the second support 20.

[0102] Except for the absence of a strap, the second fastening system has a configuration identical to that of the first fastening system. Thus, the second fastening system comprises a first wedge 27A secured to the second support 20 and a second wedge 27B mounted movably relative to the second support 20. In addition, to allow a change of configuration, the second support 20 according to this second support may comprise an attachment system configured to allow attachment of a second strap, similar to that of the first fastening system 15, 16, 17A, 17B on the second support 20. Thus, if the training and / or rehabilitation device 1 has the configuration illustrated in [Fig.3] adapted to allow work on the subject's right ankle, the subject or the physiotherapist is able, by placing this second strap, to pass the training and / or rehabilitation device 1 into a configuration adapted to allow work on the subject's left ankle.

[0103] Of course, such a training and / or rehabilitation device 1 is capable of allowing the implementation of a control method in accordance with the first embodiment.

[0104] Figures 4 to 5D illustrate a training and / or rehabilitation device 1 according to a second embodiment according to an example of practical implementation of a training and / or rehabilitation device 1 according to the invention. A training and / or rehabilitation device 1 according to this second embodiment differs from a training and / or rehabilitation device 1 according to the variant of the first embodiment, in that each of the first and second supports 10, 20 has a respective strap 15, 16, 25, 26, in that the device comprises a control module to in particular allow control of the constraint element(s) and recovery of the information provided by the sensor(s), and in that the device comprises a holding bar 6 in order to facilitate the subject remaining upright during use of the training and / or rehabilitation device 1.

[0105] It will be noted that in order to show the different components of the constraint element, the first stops of the first and second support 10, 20, the drive device and / or rehabilitation 1 as illustrated in Figures 4 to 5D has its side walls removed.

[0106] The training and / or rehabilitation device 1 according to the present embodiment thus has a frame made of profiles defining a general rectangular parallelepiped shape, the support profiles of the base together defining the support surface 5.

[0107] On a high surface having the first and second supports 10, 20, the training and / or rehabilitation device 1 has two openings 6A which each extend a tubular portion forming a respective cavity for receiving an upright of the holding bar 6. Thus, when its uprights have their end received in the openings 6A, the holding bar 6 is integral with the rest of the training and / or rehabilitation device 1 and thus provides a stable grip for the subject.

[0108] In addition, if this holding bar 6 allows the subject to secure himself during the use of the training and / or rehabilitation device 1, it also allows use according to another standing configuration which consists of doing the exercises on the first foot PL alone. Such use with a single foot makes it possible to significantly increase the load on the exercised foot, increasing the difficulty of the exercise. This configuration is particularly suitable for a healthy foot to train its reactivity and power in the face of an inversion suffered.

[0109] For reasons of simplification, the training and / or rehabilitation device 1 according to this second embodiment is shown without the holding bar in FIGS. 5A to 5D.

[0110] It can be seen in Figures 5C to 6 that the constraint element comprises: - a first, a second, a third and a fourth elastic return element 181, 182, 183, - the engagement system 185 configured to engage each of the elastic return elements 181, 182, 183 with the first and second supports 10, 20, - the control module, not shown, arranged to control the engagement system 185 and thus allow the subject or the physiotherapist to adjust the constraint force.

[0111] In this second embodiment, the first to fourth elastic return elements are constant force springs in order to provide a substantially constant stress throughout the movement of the first support 10. Of course, as a variant, the elastic return elements 181, 182, 183 may be of another type, such as helical springs, without departing from the scope of the invention.

[0112] As illustrated in [Fig.6], the engagement system 185 comprises: - a shuttle 185B arranged to slide with respect to the support surface 5 cor- corresponding to a support plate 186, - a first transmission belt 185A and a first pulley associated therewith coupled with the first support 10, - a second transmission belt 185A and a second pulley coupled to it with the second support 20, - a first and a second electromagnetic actuator 185C arranged to allow the coupling of the shuttle 185B with respectively the first belt 185A, and therefore with the first support 10, the second belt, and therefore the second support 20, - a third to a sixth electromagnetic actuator 185D arranged to couple respectively the first to the fourth elastic return element 181, 182, 183 with the shuttle 185B.

[0113] It will be noted that in [Fig.6], only the fourth electromagnetic actuator 185D couples the second elastic return element 182, here a constant force spring, with the shuttle 185B, the shuttle 185B itself being coupled by the first electromagnetic actuator 185C with the first belt 185A and therefore with the first support 10.

[0114] Thus, with such a configuration, the third to the sixth electromagnetic actuator 185D make it possible to couple the shuttle 185B with the various elastic return elements 181, 182, 183 depending on the desired constraint force value. Thus, once the shuttle 185B is coupled to the first or second belt 185A, by means of the first or second electromagnetic actuator 185C, the pivoting of the corresponding support 10, 20 causes the shuttle to move and therefore the application of the constraint force exerted by the elastic return elements to said support 10, 20.

[0115] The control module may also be configured to control the first locking element in order to allow the first support 10 to pass from a rest configuration, in which it is in the rest position, to a configuration in which it is free to pivot and is subject to the possible constraint force exerted by the constraint element. According to this possibility, the control module may also be configured to control the second locking element in order to allow the second support 20 to pass from a rest configuration, in which it is in the rest position, to a configuration in which it is free to pivot and is subject to the possible constraint force exerted by the constraint element.Thus, the therapist and / or the subject are able to choose the support 10, 20, and therefore the foot PI, P2, that he wishes to use for the training and / or proprioception work and the constraint force that is exerted on said support 10, 20 by a simple communication with the control module. To do this, the module. control may be capable of communicating according to a communication protocol, advantageously wirelessly, with a computer device of the physiotherapist or the subject such as a computer, a smartphone or a tablet.

[0116] Figures 5C to 5D also show the first stop 12 of the first support 10. This first stop is arranged in such a way as to intercept the first support 10 when the pivoting of the latter tends to exceed a threshold value for pivoting in inversion of the first support 10. This threshold value for pivoting in inversion may for example be equal to 35°. It will be noted that, as specified above, this threshold value for pivoting in inversion may be adjustable in order to allow adjustment by the physiotherapist and / or the subject. If such an adjustment may be manual, for example by a system for screwing the first stop 12, according to an advantageous possibility of the invention, this adjustment may be carried out from a dedicated actuator thus allowing adjustment by means of the control module.As specified in the context of the configurations of figures 1A and 1B, the training and / or rehabilitation device 1 also comprises the second stop, not shown, to allow limitation of the pivoting in eversion of the first support 10.

[0117] Of course, in order to limit the pivoting of the second support 20, the training and / or rehabilitation device 1 also comprises a first and a second stop 22 for the second support 20, only the first stop being illustrated, having a configuration similar to that of the first and second stops 12 of the first support 10.

[0118] As discussed in the context of the first embodiment of the training and / or rehabilitation device 1, each of the first and second supports 10, 20 may be equipped with sensors capable of providing information relating to a positioning and / or angular displacement of said support 10, 20 with respect to the support surface 5. Each of these sensors is advantageously arranged to communicate with the control module so that said information relating to the positioning and / or angular displacement of the first and second supports 10, 20 may be provided to the physiotherapist and / or the subject, for example by means of a communication of this information, or of values ​​determined from this information to the computer device of the physiotherapist or the subject.

[0119] With such a configuration, the training and / or rehabilitation device 1, in particular through the presence of the control module, can make it possible to implement a control method as described in the context of the first embodiment with, in addition: - during step B of releasing the first support 10 from its rest position, the release of the first support 10 carried out by a command of the locking system by the control module, the constraint force applied by the element of constraint having been previously set, for example through this same control module, - during step D of detecting the return of the first support 10 to the rest position and the possible step C of detecting the maximum angular position in inversion, this return and this possible maximum position are detected by the sensor(s) associated with the first support 10, the information provided by the sensor(s), or the values ​​determined from this information, can be transmitted to the physiotherapist or to the subject.

[0120] [Fig.7] illustrates a training and / or rehabilitation device 1 according to a third embodiment of the invention in which the first and second supports 10, 20 are arranged independently of each other and in which the first and second fixing systems 15', 17A, 17B, 25', 27A, 27B comprise a third semi-enveloping wedge 15', 25', i.e. partially surrounding the foot PI, P2, in place of the strap 15, 16, 25, 26.Thus, a training and / or rehabilitation device 1 according to a third embodiment differs from a device according to the variant of the first embodiment in that the training and / or rehabilitation device 1 comprises a first part IA associated with the first support 10 and a second part IB associated with the second support 20 and in that, in a manner similar to the training and / or rehabilitation device 1 according to the second embodiment, each of the first and second parts comprises a dedicated control module allowing control of the training and / or rehabilitation device 1 and recovery of the information provided by the sensor(s) present in the training and / or rehabilitation device 1.

[0121] According to this third embodiment, each of the first part IA and the second part IB of the training and / or rehabilitation device has a respective support surface and is arranged in such a way that when the first and second parts IA, IB are arranged on the same flat ground, the first and second supports 10, 20 in a rest configuration are arranged parallel to the two support surfaces and to the ground, this at the same distance from the ground.

[0122] In addition to a configuration of the first and second supports 10, 20 independent of each other, each of the first and second parts 1A, 1B comprises a respective constraint element arranged to exert a constraint force on the pivoting of the corresponding support 10, 20 in a direction of inversion rotation of the foot PI, P2 of the subject intended to be supported on said support.

[0123] As shown in [Fig.7], the first fastening system 15', 17A, 17B comprises, in addition to the first and second wedges 17A, 17B, a third wedge 15' in place of the first strap 15, 16. According to this possibility, this third wedge 15' can be shaped to partially surround a part of the forefoot and / or the birth of the kick so as to allow the first foot PI to be pressed against the first support 10 when the second wedge 17B comes to bear on the first PI. In order to ensure good support by the third wedge 15', the latter may comprise, in a manner similar to the support portion 15 of the first strap of the first and second embodiments, an external part 15A and an internal part 15B following one another in a lateral direction of the first foot PI, each comprising a respective comfort foam.

[0124] Such a training and / or rehabilitation device 1, due to the presence of the control module, also allows the training and / or rehabilitation device to implement a control method as already described in the context of the second embodiment.

Claims

1. Claims Training and / or rehabilitation device (1) for at least a first ankle of a subject, the training and / or rehabilitation device (1) comprising: - at least one support surface (5) by which the training and / or rehabilitation device (1) is intended to be supported on a ground, - a first support (10) intended to support a first foot (PI) of the subject corresponding to the first ankle, the first support (10) being mounted to move relative to the support surface (5) and having a first support face (10A) for the first foot, - a second support (20) intended to support a second foot of the subject and having a second bearing face (20A), the first support (10) and the second support (20) being arranged, in at least one configuration of the training and / or rehabilitation device (1) in which the first and second bearing faces (10A, 20A) are parallel to the bearing surface (5), at the same distance from the at least one bearing surface (5) so that the first and second bearing faces (10A, 10B) are at a substantially equal height with respect to the ground in said at least one configuration, the training and / or rehabilitation device being characterized in that the first support (10) comprises a first fixing system (15, 16, 17A, 17B) for fixing the first foot (PI) on the first support (10) shaped to fix a first orientation and a first positioning of the first foot relative to the first support (10), said first orientation and first positioning defining a first external direction of the first foot (CC) corresponding to a projection of an external edge of a midfoot of the first foot (PI) on the first support face (10A), the second support (20) having a positioning system (25A, 25, 26, 27) for the second foot (P2) in order to define a second orientation and a second positioning of the second foot (P2) on the

2.

3. second support (20), the first support (10) being mounted pivoting relative to the support surface (5) around a single first pivot axis (BB) substantially parallel to the support surface, the first pivot axis (BB) making an angle (|3) with respect to the first external direction (CC) which is included in a range between 13° and 33°, or even between 18° and 28° and advantageously between 21° and 25° in a direction of rotation going from the inside to the outside of the first foot (PI), and intercepting a projection (Tl) of a heel of the first ankle of the subject on the first support face when the orientation of his first foot is fixed by the first fixing system, Device for training and / or rehabilitating (1) at least a first ankle of a subject according to claim 1, wherein the system for positioning the second foot (P2) comprises a second fixing system (25, 26, 27A, 27B) of the second foot on the second support (20) shaped to fix the second orientation and the second positioning of the second foot relative to the second support (10), said second orientation and second positioning defining a second external direction (C'-C') of the second foot corresponding to a projection of an external edge of a midfoot of the second foot (P2) on the second bearing face (20A), wherein the second support (20) is pivotally mounted relative to the bearing surface (5) around a single second pivot axis (B'-B') substantially parallel to the bearing surface,the second pivot axis (B'-B') making an angle ([3') with respect to the second external direction (C'-C') which is included in a range between 13° and 33°, or even between 18° and 28° and advantageously between 21° and 25° in a direction of rotation going from the inside to the outside of the second foot (P2), and intercepting a projection (T2) of a heel of the second ankle of the subject on the support face when the orientation of his second foot (P2) is fixed by the second fixing system, the training and / or rehabilitation device (1) preferably comprising a pivot locking system configured to allow pivot locking of the first support and the second support., Device for training and / or rehabilitating (1) at least a first ankle of a subject according to claim 1, in which the second support (20) is integral in movement with the surface support (5) with the second support face (20A) arranged parallel to the support surface (5).

4. Training and / or rehabilitation device (1) for at least a first ankle of a subject according to any one of claims 1 to 3 further comprising at least one first constraint element (181, 182, 183, 185) arranged to exert a constraint force on pivoting of the first support (10) in a direction of inversion rotation of the first foot (PI) of the subject which is intended to be supported therein, the at least first constraint element (181, 182, 183, 185) being preferentially selected from the group of gravitational constraint elements, elastic constraint elements and electromagnetic constraint elements.

5. Training and / or rehabilitation device (1) for at least a first ankle of a subject according to any one of claims 1 to 4, wherein the first fixing system (15, 16, 17A, 17B) of the first foot on the first support (10) comprises a first strap (15, 16) arranged to hold a forefoot of the first foot in support of the first support face and at least one first wedge (17A) on which an external edge of the midfoot and / or a rearfoot of the first foot (PI) is intended to come into contact when it is supported by the first support face, wherein the first strap (15, 16) and the first wedge (17A) are preferentially arranged to constrain a support of the first foot (PI) on the first support (10) and to constrain a support of an external side of the first foot (PI) so as to fix the first external direction (CC).

6. Training and / or rehabilitation device (1) for at least a first ankle of a subject according to claim 5, wherein the first fixation system (15, 16, 17A, 17B) further comprises a second wedge (17B) on which an internal edge of the midfoot and / or a rearfoot of the first foot (PI) is intended to come into contact when it is supported by the first bearing face (10A), wherein said second wedge (17B) is mounted movably relative to the first support (10), the first wedge (17A) being integral with the first support (10).

7. Training and / or rehabilitation device (1) for at least a first ankle of a subject according to claim 5 or 6, wherein the first strap (15, 16) comprises a support portion (15) intended to come to bear on an external part of the top of the forefoot of the first foot (PI) of the subject, said support portion (15) preferably having an external part (15A) and an internal part (15B) succeeding one another in a lateral direction of the first foot (PI) intended to be held by the strap going from the outside to the inside of said first foot (PI), the external part (15A) having a greater hardness than that of the internal part (15B).

8. A training and / or rehabilitation device (1) for at least one first ankle of a subject according to claim 4 taken alone or in combination with any one of claims 5 to 7, wherein the at least one first constraint element (181, 182, 183, 185) comprises at least one first elastic return element (181) and preferably a second elastic return element (182), or even a third or more elastic return elements, wherein the training and / or rehabilitation device (1) further comprises an engagement system (185) configured to engage said at least one first elastic return element (181) with the first support (10), and wherein, when the first constraint means (181, 182, 183, 185) comprise a second elastic return element (182), or even a third elastic return element (183),the engagement system (185) has a configuration in which it engages the second elastic return element (182), or even the third elastic return element (183) with the first or more supports (10).,

9. Training and / or rehabilitation device (1) for at least a first ankle of a subject according to any one of claims 1 to 8, further comprising at least one sensor capable of providing information relating to a positioning and / or angular displacement of the first support with respect to the support surface (5).

10. A training and / or rehabilitation device (1) for at least a first ankle of a subject according to any one of claims 1 to 9 further comprising a first locking element configured to lock the first support in a rest position in which the first bearing face (10A) is parallel to the bearing surface (5), the first locking element being preferentially automated in such a way as to authorize a command to switch the locking system from an unlocked configuration in which the first support is free to leave the rest position to a confi- locked configuration in which the first support is held in the rest position, wherein, when the training and / or rehabilitation device (1) is according to claim 2 and comprises a pivoting locking system, the pivoting locking system comprises said first locking element.

11. Training and / or rehabilitation device (1) for at least a first ankle of a subject according to any one of claims 1 to 9 further comprising at least a first stop configured to limit the angle of rotation of the first support (10) with respect to the support surface (5), said stop preferably providing a rotation stop in the direction of inversion rotation of the first foot (PI) of the subject which is intended to be supported by the first support (10), the at least a first stop preferably being adjustable.

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