EP2271298A1 - Dispositif de génération de sensations de mouvement et de rééducation fonctionnelle - Google Patents
Dispositif de génération de sensations de mouvement et de rééducation fonctionnelleInfo
- Publication number
- EP2271298A1 EP2271298A1 EP09733967A EP09733967A EP2271298A1 EP 2271298 A1 EP2271298 A1 EP 2271298A1 EP 09733967 A EP09733967 A EP 09733967A EP 09733967 A EP09733967 A EP 09733967A EP 2271298 A1 EP2271298 A1 EP 2271298A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- macro
- movement
- signals
- vibrators
- elementary
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H23/00—Percussion or vibration massage, e.g. using supersonic vibration; Suction-vibration massage; Massage with moving diaphragms
- A61H23/02—Percussion or vibration massage, e.g. using supersonic vibration; Suction-vibration massage; Massage with moving diaphragms with electric or magnetic drive
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H1/00—Apparatus for passive exercising; Vibrating apparatus; Chiropractic devices, e.g. body impacting devices, external devices for briefly extending or aligning unbroken bones
- A61H1/02—Stretching or bending or torsioning apparatus for exercising
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
- A61H2201/16—Physical interface with patient
- A61H2201/1602—Physical interface with patient kind of interface, e.g. head rest, knee support or lumbar support
- A61H2201/165—Wearable interfaces
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
- A61H2201/50—Control means thereof
- A61H2201/5007—Control means thereof computer controlled
Definitions
- the present invention relates to a device capable of generating sensations as perceived by the brain during the execution of a movement affecting a part, or all, of the body of a subject, whereas this same part of the body body is not affected by any movement.
- the present invention relates, inter alia, to the functional rehabilitation of persons, or even certain animals, of which a damaged limb, or any other part of the body, is immobilized by a corset.
- the present invention also relates to education and functional rehabilitation relating to movements that the brain can no longer perform, or performs only imperfectly, following an injury, accidental or resulting from an illness, or because of a malformation.
- the present invention also relates to the learning, by an individual or an animal, of a gesture, or movement having a specific purpose. It also relates to the addition to the perception received, by an individual or an animal, of a situation or a virtual event, of a type of additional sensory information. It is customary to call such a confrontation of a subject with images, sounds and any other type of sensory information a descriptive representation of the situation or virtual event.
- the present invention is capable of causing a subject to perceive the sensations corresponding to movements, whether or not the subject executes these movements, which constitutes in fact additional sensory information for the perception of virtual reality, and therefore enrichment. from this perception.
- a person with a fracture of a lower or upper limb, or a ligament injury is usually provided with a rigid brace that immobilizes the affected portion of the limb, such as a joint.
- a rigid brace that immobilizes the affected portion of the limb, such as a joint.
- the muscles of the joint are unable to ensure the movements they allowed before the immobilization of the joint. This is due, on the one hand, to the fact that the muscles have been injured or not used and, on the other hand, to the fact that the brain has lost some of its ability to handle the movements resulting from the stresses of these muscles. Indeed, many studies have shown that some brain networks, assigned to this task, are gradually reassigned to other tasks if they do not receive the nerve messages that emit the skin and muscles when they work.
- Physiological receptors located particularly in the skin, and in the muscles, are responsible for transmitting bioelectrical messages to the brain.
- some of these receptors are between the muscle fibers, and are arranged in such a way that they are sensitive to muscle extension.
- These messages are "reports" that describe the detailed movement of each muscle, so that the brain can, in turn, represent an action and control the muscles to eventually correct their movement and also to guide the continuation of movement in the desired direction.
- Writing is a good example of such a servo loop.
- the person writing will simultaneously contract or lengthen a number of muscles of the hand and wrist, all of these elementary movements in front of, obviously, be perfectly coordinated.
- the brain captures the messages emitted by each involved muscle and the skin, in case of extension, and it synthesizes this information to determine what, until then, the movement has been done, that is, say the plot, in the case of writing.
- the present invention aims in particular to reduce the need for functional rehabilitation when part of the body of a living being, in particular a human being, has been immobilized. It may also allow for the correction of impairment or inability to perform movements, whether resulting from an injury or malformation, motor or nervous system.
- the invention firstly relates to a device, in particular for the functional rehabilitation of a body part of a living being, comprising a control unit comprising in memory a table containing a first plurality of elementary signals. excitation circuit serving as constituent elements of a second plurality of macro-patterns each consisting of a third own plurality of said elementary signals, the control unit comprising a sequencer arranged to read the macro-patterns and to emit a said second plurality corresponding commands of excitation, each time, a said third plurality of own vibrators selected one of said first plurality of vibrators carried by a coupling support in respective predetermined areas of the body portion.
- Each macro-pattern consists of a set of elementary patterns which each represent the shape of a signal controlling the movement of one of the vibrators, ie a mechanical exciter of a point of the skin and / or any physiological receptor element located below, such as for example a tendon or a muscle.
- the macro-motifs are determined from recordings previously made in human subjects or are macro-patterns of synthesis, established by composition of elementary patterns, the shape of each of which has been optimized to emulate a determined movement.
- Each of the vibrators, applied to the skin will thus stimulate a set of physiological receptors, that is to say a particular point, for example of a tendon linked to a damaged joint, this stimulation being carried out in a direction, a intensity and a frequency which constitute as many parameters in the choice of each memorized elementary pattern.
- the variation over time of this stimulation, and the multiplication of the points of stimulation constitute as much stimulation of the physiological receptors.
- each macro-pattern may comprise data specifying a modulation of amplitude and / or frequency of the movement of the vibrator over a predetermined excitation period.
- the sequencer is mechanically independent of the coupling medium, and is connected to the vibrators by a data link.
- the vibrators are for example controlled through a respective transponder.
- the problem of immobilization being treated by a sleeve or other element external to the device according to the invention.
- the only elements necessarily worn by the patient are the vibrators with their coupling support.
- the macro-patterns can perfectly be stored in a server common to several such devices.
- the common server can therefore contain a complete library of all types of macro-patterns, that is to say for all types of members or other that may be treated. For a treatment of a given limb, the sequencer will therefore choose the appropriate set of macro-patterns.
- the supply link of the macro-patterns to the vibrators can be provided by cellular telephone circuits or links with a data transmission network. It will be recalled that a mobile phone has a data exchange port which, in this example, can be connected to a logic of data exchange management and control of vibrators.
- a mobile phone has a data exchange port which, in this example, can be connected to a logic of data exchange management and control of vibrators.
- a person in ambulatory medicine at home for example, can receive data messages containing the desired sequences of macro-patterns.
- the above management logic forming a sequencer and a local adapter of format and bit rate transmitted, will then store the data bits representing the sequences of macro-patterns received at high speed by the network, and restore, in Delayed time, these data in a format wanted compatible with the vibrators, and at the desired speed.
- the device according to the invention and described above can be provided to limit the need for functional rehabilitation after immobilization of all or part of the body, for example following a fracture, injury or pathology. It can also be provided to reduce the consequences of prolonged bed rest, by maintaining in activity the neural circuits for processing basic descriptive movement messages, for example the maintenance in natural posture or locomotion.
- the implementation of the device according to the invention made on a subject so as to provide its brain with the descriptive messages of the same movement in a repetitive manner is capable of gradually inducing the execution by the subject of the said movement.
- This property can be used to enrich or correct the repertoire of gestural knowledge recorded by the brain, and to realize the learning of an unknown gesture, or the perfecting of an imperfectly performed gesture.
- the device according to the invention can thus be provided as a means of functional rehabilitation by providing the brain with descriptive messages of a movement that this brain does not know or no longer knows how to execute, or performs only imperfectly. Such situations may result from injury due to illness or accident, or from malformation. These neurological lesions, accidental or degenerative, can affect the central or peripheral nervous system.
- This device can in particular be adapted to deliver the descriptive messages of the movements corresponding to the locomotion.
- the interested muscles having been identified, the vibrators are held in appropriate position by a suitable coupling support, to transmit stimuli to the appropriate physiological receptors according to the excitation signals provided by the reading of the specific macromotifs of the walking .
- Another application of the device according to the invention is constituted by the rehabilitation to maintain a posture, or particular attitude of the body of a living being, for example the standing of the human being.
- the device according to the invention can also be provided to allow the learning or development of complex gestures, including requiring precision. Examples include writing, gestures related to sports activities, service to tennis or golf swing, professional or artistic activity. Such learning or development may also apply to the performance of gestures in conditions different from the usual conditions of a subject. These include the conditions corresponding to free fall, microgravity or weightlessness, increased gravity and acceleration. Such a device can also be used in the context of virtual reality. Indeed, the mobilization of the largest number of sensory channels contributes to improving the quality of the perception of the virtual reality felt by the subject, human or animal.
- the device according to the invention can be used to add sensations of movement, and thus enrich the description of the situation corresponding to the virtual reality to which the subject is confronted.
- the device according to the invention can be provided to be an integral part of a virtual reality production system.
- These systems include video game consoles and simulators of all kinds. These include flight simulators, driving all kinds of machines, industrial process control, simulators of extreme conditions, such as weightlessness and ultra-gravity, simulators of complex gestures and precision. such as surgery.
- the system for producing virtual representations comprising a device according to the invention which is functionally integrated with it, associates sensations of the sensory channels of the user with sensations of perception of virtual movements. Indeed, this system will then provide the brain with sensory information messages corresponding to body movements represented by the virtual reality produced by the system, and to which the subject is confronted, giving the impression of the execution of these movements. whether or not this subject executes the said movements.
- the device according to the invention comprises means for holding the vibrators in contact with the skin, at the desired location, or coupling support. It is possible to adopt many embodiments to provide the function of this coupling support, which closely depend on the use made of the device. Achievements may take the form of a harness, a combination, a partial or total garment, whose material and design details are suitable for use. A harness may for example take the form of a set of straps with means of adjustments for adjusting the position of the vibrators, and the characteristics of the contact of each vibrator on the skin.
- the coupling support can fulfill one or more other functionalities that have a synergy with the particular use made of the device according to the invention.
- the coupling support may functionally provide the contention or the immobilization of a part of the body corresponding at least in part with the part subjected to the stimuli.
- the invention therefore relates more generally to a device for generating bioelectric signals, providing a living being sensations corresponding to the execution of a given movement of a part of his body (1) even if this movement is not executed, comprising:
- control unit comprising a sequencer
- each vibrator carried by a coupling support holding each of them in a predetermined position relative to body elements of the part of the body, in which, for each given movement, each vibrator can receive an elementary excitation signal so that it mechanically stimulates body elements of the body part to cause the emission of bioelectric signals, the set of elementary excitation signals of the various vibrators constituting a macro-pattern, these elementary signals being chosen to constitute a macro-pattern specific characteristic of the movement considered, this macro-pattern read by the sequencer giving the vibrators elementary excitation signals capable of causing the creation of bioelectric signals in the living being making him perceive the sensations of execution of said movement.
- the invention also relates to a method for establishing the excitation macro-patterns of the device according to the invention, in which method tests are carried out on at least one subject person,
- the subject indicates the perception that he has of the virtual movement thus evoked by the stimuli
- the invention also relates to a use of the device according to the invention, in which the device is functionally integrated with a video game console to emulate, at the level of a user, movements of an avatar of the latter represented on a video game console. screen.
- the user can thus perceive the movements of his avatar and possibly the voluntary movements that the user executes or the shocks he receives.
- the user manipulates a tri-directional accelerometer (3D) to control the movements of his avatar, that is to say he controls the game by his own 3D movement, in direction and intensity, and that it perceives it or only its contact with the environment (shock against a wall, boxing fight) by means of the device according to the invention.
- His perception of events presented on the screen is therefore both visual and tactile and motor, with sensations of local acceleration, that is to say movement. It is therefore conceivable that these two parallel and complementary channels of perception of the environment make it possible to immerse the user intensely in this increased visual environment.
- the invention relates to devices and methods as defined in the claims.
- FIG. 1 is formed of a figure IA, which is a block diagram illustrating the context of the invention, in the form of an information transmission loop between a tendon associated with the orthosis and the brain, and a FIG. 1B, which illustrates more precisely the shape of the orthosis;
- FIG. 2 formed of FIGS. 2A, 2B and 2C, shows three examples of time signals representing the letter "a"
- FIG. 3, formed of FIGS. 3A, 3B and 3C, represents a considered articulation of a subject for FIG. 2A to 2C respectively,
- FIG. 4 formed of FIGS. 4A, 4B and 4C, represents the manual writing of the letter "a” above, corresponding to FIGS. 3A to 3C respectively,
- FIG. 5 represents a foot associated with various directions of sensation, evoked by the vibration of various tendons
- FIGS. 6 and 7 each represent five temporal patterns of signals coming from various muscles, when the letter "a” and the number 8 respectively are drawn respectively, with each time a natural signal picked up and the same signal after treatment, and
- FIG. 8, consisting of FIGS. 8A, 8B, 8C and 8D, respectively comprises four lines of four identical digits and four same basic letters, illustrating the perception that is acquired when applying macro-patterns.
- Figure IA is a schematic view illustrating the context of the invention.
- the muscles of the moving foot 1 of a person, here seen from the right, and precisely tendons 2 classically transmit to the brain significant elementary signals of the movement in progress, that is to say the trajectory and speed of the foot 1, in the form of its global movement in advance as well as its movements in rotation.
- Figure 1B shows, in left view, in more detail the shape of the orthosis, which closely wraps the foot and the bottom of the calf.
- the movement of any object can be defined by referring to six types of movement, namely three translations according to respectively three orthogonal axes, such as for example a vertical axis and two horizontal axes defining a forward / backward direction and a lateral direction, and three orthogonal axes of rotation.
- the movement was provoked by a voluntary command of the brain or by a reflex action.
- the signals received in return by the brain are thus a report of the movement executed, so that the brain can send a correction order if necessary, to rectify a movement that it deems incorrect or to chain a continuation of the movement. This is especially important for synchronizing walking.
- the brain is thus used to dealing with this kind of signals.
- the brain no longer receives such signals and the neural networks that treated them are gradually assigned to other tasks.
- Such "motion" elementary signals received by the brain have been captured by electrodes inserted into the nerve, close to the sensory fibers from the physiological receptors, and recorded in a database 10.
- the total number of tendons 2 thus defines a first plurality, of size Pl, of such elementary signals, and any particular movement MO, out of a second plurality P2 of possible motions, corresponds to a specific subset constituting a particular set consisting of a third plurality P3 of elementary signals belonging to to the first plurality Pl.
- Each third plurality P3 is therefore of size specific to the motion MO considered of the second plurality P2, since it is composed of those of the elementary signals which are specific to this movement MO.
- the plurality references P1, P2 or P3, which each relate to different types of elements, designate only the number or size of the plurality, whereas the nature or type of the elements is indicated by the terms associated with the reference.
- first plurality Pl of 5 tendons 2 to be monitored (only two tendons 2 being represented), that is to say a first plurality Pl of elementary signals to be acquired through 5 acquisition channels.
- a first determined movement Ml, among the second plurality P2 of movements, for example representing 10 MO motions, will cause for example a reaction on a said third plurality P3 of channels which will be example consisting of the channels of rank 1 to 4, while a second movement M2 will cause a reaction on another third plurality P3 of channels constituted by the channels of rank 3 to 5.
- the third pluralities P3 of channels, and therefore also of elementary signals are of disparate sizes, here of respective sizes 4 and 3 channels.
- Each of the third plurality P3 of elementary signals P3 thus forms a block of data, of size P3 (number of elementary signals) specific to the MO motion considered.
- the second plurality P2 of movements may be much larger than the first plurality Pl of elementary signals since the various (P3) data blocks of the second plurality P2 of movements are each formed by specific combinations and sizes P3 mutually different, said elementary signals taken from the first plurality Pl.
- this is a simplified representation because a much larger second plurality P2 of blocks containing a third plurality P3 of MO motion signals has been established.
- Each third plurality P3 of signals of a block 11 or 12 thus represents all the elementary signals emitted by various tendons 2 during the movement MO considered.
- the various third pluralities P3 are in general of respective different sizes, that is to say that each movement MO involves a number of tendons 2 that are specific to it, for example each time from three to five out of one plus one. large number (P1) of existing tendons 2, but whose other tendons 2 are not of interest for the MO motion considered.
- this ascending branch towards the brain, implements a transducer function, passing from the domain of mechanics, and more precisely of kinematics, that is to say a domain of "action”, in the field of bio-electricity in which are the signals, and more precisely the domain of the information or knowledge, with the analysis of the signals by the brain.
- the interest is to be able to cause the creation of these same second pluralities P2 of each P3 signals, sensory feedback to the brain, when the part of the body considered, so here the foot 1, is immobilized by a coupling support 3 here under sensory feedback orthosis form constituting a corset applied to the foot 1, injured, so as to maintain the corresponding analysis activity in the brain.
- a downward leg is defined, from the database 10 to the foot 1, an upstream section of which is purely electronic and a downstream section of which is of electromechanical type to transform the electrical control signals into mechanical stimuli. at the level of the tendons 2.
- the database 10 thus controls a transcoder 20 which itself writes a memory 30 of a said second plurality P2 of macro-patterns 31, 32, each containing a said third plurality P3 of signals elementary, the macro-patterns 31, 32 being defined bijectively from the respective data blocks 11 and 12 specific to each movement MO.
- the memory 30 belongs to a control unit 40 managed by a central unit 42 driven by a time base 41 and associated with a sequencer 43 read-connected to the macro-pattern memory 30.
- Each macro-pattern, among the second plurality P2 of macro-patterns 31, 32 each containing P3 electronic control patterns, can thus control, by a link 49 comprising a said first plurality Pl of channels, a said third plurality P3, which is specific, transducers 51, or transponders , chosen from among a first plurality Pl of transducers 51.
- the first plurality Pl of transducers 51 controls a said first plurality Pl of associated respective vibrators 61 applied at various predetermined positions to the muscles of foot 1 and in particular to respective pl tendons 2 .
- FIG. 1B shows that the vibrators 61 are housed under the envelope constituting the orthosis and applied to the associated tendon 2 under a pressure set by a coupling adjustment screw 61V.
- the first plurality Pl of pairs of transducers 51 and vibrators 61 is therefore of sufficient size to make it possible to cause all the types of elementary signals of the database 10.
- the macro-pattern 31 or 32 which is selected, in order to emulate, vis-à-vis the brain, a movement Ml or M2 among the second plurality P2, will control one of the second pluralities P2, among the first plurality Pl transducers 51, to mechanically stimulate those tendons 2, or other body elements, which normally generate the elementary electrical signals in response to the actual motion M1 or M2 considered.
- the loop constituted by the rising branch, tendons 2 to the database 10, and the descending branch, return presents a unit gain, that is to say that the descending branch is capable of to produce, and to deliver on the tendons 2, signals of a mechanical nature which cause in reaction the creation of biological elementary electrical signals and, moreover, the descending branch is arranged so that the elementary electrical signals, which it induces by reaction of tendons 2, are substantially identical to the original elementary signals, that is to say those which, after numerical coding, form the blocks 11 or 12 from which one started, in the database 10, for produce the stimuli.
- the second plurality P2 of blocks 11, 12 will have been judged sufficient, it is then not exploited that the descending branch to emulate virtual movements.
- the coupling support 3 would no longer be a limb immobilization corset, and it would retain only its holding function, to keep all the vibrators 61 in the predetermined coupling position at any desired body location.
- the virtual movements below above can be "classical" movements, natural, such as a movement of a limb, or be out of the ordinary movements, for example corresponding to a human or extranatural force such as hallucination or still corresponds to an unusual position, for example a position adopted during a swimming exercise or a free fall jump from an airplane.
- We can thus emulate the desired movements in a video game.
- the focus necessary to define each additional macro-pattern 38, 39 can be performed by iterative tests, by applying the additional macro-pattern 38 or 39 to a subject and collecting the opinion of the person concerned as to the sensations that she perceives.
- the data blocks 11 and 12 each represent the time evolution of the corresponding signals, that is to say their instantaneous amplitude constituting a temporal pattern of control of the vibrators 61, through the transducers 51.
- the shape of the signal representing the evolution of this instantaneous amplitude over time can be defined, in memory 30, by a series of regularly spaced samples temporally, for example every 5 milliseconds, therefore at 200 Hz.
- Another way of representing the shape of the signal of a pattern is to consider that it comprises a continuous component, capable of varying at a certain speed, on which is superimposed an alternating component, that is to say of varying amplitude. faster and according to an instantaneous frequency that can vary, possibly with phase drifts.
- the signal can then be defined by data specifying the evolution of the continuous and alternative components of the pattern.
- the signals generated by the tendons 2 are thus coded so that they can be used digitally.
- the macro-patterns 31, 32 will each be established from the source block 11 or 12, with an intermediate transcoding, by the transcoder 20, to adapt them to the specific characteristics of the vibrators 61, that is to say their sensitivity. , or mechanical response to electrical controls, and in particular their frequency operating range and their response curve, or sensitivity, according to the frequencies, as well as their response phase shift according to the frequency.
- the parameters to be taken into account in the global loop are the following ones:
- Sensitivity of the reaction of the tendons 2 to a movement and this according to its amplitude, its direction and its speed, determining the form of the elemental bio-electrical signal emitted.
- Transducer Transducer Function 20 Coding Mode, in the Memory 30, of the Signals Derived from the Transcoder 20, to Constitute the Macro-motifs 31, 32
- Sensitivity of response of the transducers 51 as regards the amplitude, the frequency and the phase.
- the development of the invention has made it possible to determine a beam of a said first plurality Pl of said elementary loops, each relating to a said elementary signal and having a unity gain, to thereby accurately emulate an initially observed MO motion. , even a new movement.
- Each macro-pattern 31, 32 thus comprises data specifying a modulation of amplitude and / or frequency of the movement of the vibrator 61 over a predetermined excitation period.
- the memory 30 and the associated sequencer 43 may be mechanically independent of the coupling support 3, and connected to the transducers 51 by a said data link 49 which may comprise a beam of a first plurality Pl of wires each controlling a particular transducer 51.
- the data link 49 is of the wireless type, for example radio. In such a case, it is preferably established a common data transmission channel, on a carrier frequency, and the third plurality P3 of signals in each macro-pattern 31, 32 is transmitted by time division multiplexing, i.e.
- the messages are distributed to the above recipient (51) by a demultiplexer 54, that is to say say a switcher able to join the wanted one among the transducers 51 possible recipients.
- a digital / analog decoder is associated with the demultiplexer 54 to transform them into analogue signals able to directly control the transducers 51.
- the transmission of the P3 motifs of each of the macro macro-patterns 31, 32 can, however, also be carried out in a purely analog way, with such a decoder input of the link 49. It can also be expected to store the macro-patterns 31, 32 in analog form.
- the macro-pattern memory 31, 32 and the sequencer 43 are housed in a remote server, able to serve a whole population of orthoses 3 thus equipped with vibrators 61.
- the link 49 is for example wired telephone type or radio, cellular or satellite, and the transducers 51 are then controlled by telephone circuits, for example cellular.
- the orthosis 3 comprises a kind of case for fixing such a portable station, and the conventional port of data that usually has such a station is used to restore, at the wire level, the macro signals. reason 31, 32 received by radio.
- demultiplexing is also valid in this case.
- the subject indicates the perception he has of the virtual movement thus evoked by the stimuli, and, by successive iterations, by changing the parameters of the first macromotif 31, final values of the said parameters corresponding to a satisfactory emulation of the simulated real motion, and
- each parameter determines the temporal form of each temporal pattern, that is to say that each parameter can be represented, as mentioned above, by amplitude samples, possibly in limited numbers and supplemented by information frequency and phase.
- amplitude samples possibly in limited numbers and supplemented by information frequency and phase.
- the vibrators 61 were a product marketed by the company IKAR Co. Ltd, under the protected name Vibralgic model. The vibrators 61 had a head 1 to 2 cm long and 1 cm in diameter.
- a vibrator 61 may consist of an electric winding powered by the elementary pattern signal, amplified to the desired power, thereby producing an alternating magnetic field of desired instantaneous amplitude and frequency and evolving to produce the precise shape elementary pattern.
- Each elemental pattern consisted of a sequence of 5 ms pulses, with a peak to peak amplitude of 0.25 mm. The spectrum was in the band from 1 to 100 Hertz.
- the vibrator 61 may also be constituted from a rotary electric motor rotor coupled to an eccentric mass. One can still provide a piezoelectric element.
- FIG. 2A thus shows a macro-pattern of five temporal patterns initially captured on a subject when it imposes on the articulation of the ankle thereof a movement which corresponds to the trace of the letter "a” by the end of the segment corresponding to this articulation (block 11), and retranscribed in macro-pattern 31 in the memory 30, these elementary patterns cooperating to describe the neuro-sensory trace of the letter "a", through the sequencer 33 and the vibrators 61.
- this is a synthetic approach in which the appropriate set of elementary patterns has been developed, i.e.
- FIG. 4B thus shows that the natural signals (FIG. 2A) have been improved to obtain a perfect trace of the letter "a”, thus indicating the perception required to obtain this result. It is therefore a correction of a perception distortion visible in FIG. 4A.
- Transcoder 20 can thus perform the reverse correction of the above distortion.
- FIG. 5 represents a foot in a view from above, with various vectors representing the excitations TA + EHL, EDL, PL, GS and TP of FIG. 2.
- a low-pass filter has smoothed the recordings of the trajectories executed. Moreover, angular velocity components of the writing trajectory of the letter or number considered, in orthogonal coordinates of x-axis and y-axis, have been determined. To do this, we have, at a fixed rate, every 200 ms, determined the difference of positions ûx and ûY of a current point of writing trajectory on the two axes, which provided the direction and the size of a instantaneous speed vector. The comparison between two such successive vectors then provided an angle of deviation of the trajectory, corresponding, in a bi-univocal manner, to a certain curvature.
- the ankle receives the various vector vibrations and thus detects any change of direction of at least one of these.
- the sensitivity of such a detection one can define, for each muscle, a direction of maximum sensitivity, that is to say that the same vibration will be perceived attenuated if it has an oblique direction by report to the direction of maximum sensitivity. If one moves angularly away from the direction of maximum sensitivity, the excitation of the vibrators 61 must be multiplied by the cosine of the angle of obliquity then existing.
- Such a method for producing synthetic macro-motifs of vibrators is applicable to any articulation of the body of a living being.
- FIGS. 6 and 7, homologues of FIG. 2 each represent five elementary pattern signals of five tendons 2, respectively for the letter "a" and the number 8.
- the evolution of the frequency of the signal as a function of time this frequency being normalized between 0 and 1, between the said lower limit 1 Hz and the upper limit 100 Hz.
- Each signal is in fact represented twice, all of firstly as a natural, experimental (dotted) motif, determined from a survey carried out on a subject, and also as an artificial motif (continuous line), that is to say generated during the setting at the point of an artificial macro-pattern 38 or 39. The differences that are observed between the two signals of each pair are minor, that is to say they are not significant.
- Figure 8A shows eight trajectories with trajectories imposed for the four numbers 1, 2, 3, 8 and the four letters a, b, e, n.
- FIG. 8B shows corresponding plots reproduced experimentally according to what has been explained for FIGS. 2A, 3A and 4A, whereas FIGS. 8C and 8D correspond to the conditions exposed for FIGS. 2B, 3B, 4B and 2C respectively, 3C, 4C, that is to say for the ankle or wrist.
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- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- Pain & Pain Management (AREA)
- Physical Education & Sports Medicine (AREA)
- Rehabilitation Therapy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- User Interface Of Digital Computer (AREA)
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
- Rehabilitation Tools (AREA)
- Percussion Or Vibration Massage (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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FR0802242A FR2930139B1 (fr) | 2008-04-22 | 2008-04-22 | Dispositif de reeducation fonctionnelle. |
PCT/IB2009/005330 WO2009130579A1 (fr) | 2008-04-22 | 2009-04-22 | Dispositif de génération de sensations de mouvement et de rééducation fonctionnelle |
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EP2271298A1 true EP2271298A1 (fr) | 2011-01-12 |
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EP09733967A Withdrawn EP2271298A1 (fr) | 2008-04-22 | 2009-04-22 | Dispositif de génération de sensations de mouvement et de rééducation fonctionnelle |
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US (1) | US8956312B2 (fr) |
EP (1) | EP2271298A1 (fr) |
CA (1) | CA2722025A1 (fr) |
FR (1) | FR2930139B1 (fr) |
WO (1) | WO2009130579A1 (fr) |
Families Citing this family (6)
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US20110232134A1 (en) * | 2010-03-24 | 2011-09-29 | Boehringer Laboratories Llc | Asynchronously vibrating device for use with footwear and methods of use |
WO2013169320A2 (fr) | 2012-02-10 | 2013-11-14 | Merlin Technology, Inc. | Pilote automatique et procédés |
CA2905042A1 (fr) * | 2012-12-14 | 2014-06-19 | Case Western Reserve University | Methodes de traitement de troubles medicaux par le codage base sur une population d'informations neurales |
US10994188B2 (en) | 2015-11-30 | 2021-05-04 | Nike, Inc. | Shin guard with remote haptic feedback |
WO2017120530A1 (fr) * | 2016-01-06 | 2017-07-13 | SonicSensory, Inc. | Système de réalité virtuelle avec intégration de drone |
WO2018151806A2 (fr) * | 2017-02-16 | 2018-08-23 | Lach Rebecca | Système interactif portatif et méthode de gestion de la douleur non-opioïde et sans médicament |
Family Cites Families (8)
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US7460911B2 (en) * | 1997-02-26 | 2008-12-02 | Alfred E. Mann Foundation For Scientific Research | System and method suitable for treatment of a patient with a neurological deficit by sequentially stimulating neural pathways using a system of discrete implantable medical devices |
EP1201266A1 (fr) * | 2000-10-26 | 2002-05-02 | Compex SA | Procédé de programmation de données de stimulation électrique pour un appareil de stimulation électrique, et installation pour sa mise en oeuvre |
US20080077192A1 (en) * | 2002-05-03 | 2008-03-27 | Afferent Corporation | System and method for neuro-stimulation |
US7725175B2 (en) * | 2002-12-04 | 2010-05-25 | Kinetic Muscles, Inc. | System and method for neuromuscular reeducation |
EP1625841A4 (fr) * | 2003-05-22 | 2009-04-01 | Hokkaido Tech Licensing Office | Dispositif et procede de stimulation sensorielle de la peau |
CA2555358A1 (fr) * | 2004-02-05 | 2005-09-22 | Motorika Inc. | Stimulation neuromusculaire |
EP1798635A1 (fr) | 2005-12-14 | 2007-06-20 | Research In Motion Limited | Dispositif électronique portatif comprenant un dispositif d'entrée à clavier virtuel, et procédé associé |
US20070208392A1 (en) * | 2006-02-17 | 2007-09-06 | Alfred E. Mann Foundation For Scientific Research | System for functional electrical stimulation |
-
2008
- 2008-04-22 FR FR0802242A patent/FR2930139B1/fr active Active
-
2009
- 2009-04-22 US US12/988,830 patent/US8956312B2/en active Active - Reinstated
- 2009-04-22 WO PCT/IB2009/005330 patent/WO2009130579A1/fr active Application Filing
- 2009-04-22 CA CA2722025A patent/CA2722025A1/fr active Pending
- 2009-04-22 EP EP09733967A patent/EP2271298A1/fr not_active Withdrawn
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Also Published As
Publication number | Publication date |
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WO2009130579A1 (fr) | 2009-10-29 |
CA2722025A1 (fr) | 2009-10-29 |
US8956312B2 (en) | 2015-02-17 |
FR2930139B1 (fr) | 2022-12-30 |
FR2930139A1 (fr) | 2009-10-23 |
US20110034253A1 (en) | 2011-02-10 |
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