EP3463243A1

EP3463243A1 - Relaxation method, and movable chair for carrying out said method

Info

Publication number: EP3463243A1
Application number: EP17727881.9A
Authority: EP
Inventors: Denis BEDAT
Original assignee: Off Matrix Holdings SA
Current assignee: Off Matrix Holdings SA
Priority date: 2016-06-03
Filing date: 2017-06-03
Publication date: 2019-04-10
Also published as: FR3052074B1; WO2017207816A1; FR3052074A1

Abstract

The invention relates to a relaxation method for a person seated in a chair; said method involves positioning: - the seat base (14) of the reclined chair in such a way as to define an angle α of 20° to 50° together with the horizontal, the second edge (26) being higher than the first edge (20); - the backrest (16) of the raised chair in relation to the seat base (14) in such a way as to define an angle α2 of 20° to 50° together with the horizontal; - the legrest (22) of the reclined chair downwards in relation to the seat base (14) so as to define an angle α3 of 5° to 45° together with the horizontal; and subjecting the person to vibrations at frequencies of 5 to 300 Hz.

Description

RELAXATION METHOD AND AMBULATORY ARMCHAIR FOR IMPLEMENTING

DUDIT METHOD

The present application relates to a relaxation method and an ambulatory chair for implementing said method.

In the context of outpatient surgery, the patient usually stays only one day in hospital, or even a few hours. According to a typical route, it is welcomed and then sent to a room. If the patient is valid, he makes this journey while walking. In the opposite case, a wheelchair is used to ensure this first journey. When the time comes, the bedridden patient is transferred from his bed to a stretcher and transferred to an operating theater. Once in the operating room, the patient is transferred from a stretcher to an operating table. After the operation, the patient is put back on the stretcher to be transported to a recovery room. After awakening, the patient is brought from the recovery room to his room using a stretcher. Arrived at his room, the patient is transposed of the stretcher on the bed. Finally, the patient leaves the hospital by walking or wheelchair according to his abilities.

Thus, during his stay, the patient is installed on four different supports, namely a wheelchair, a stretcher, a bed and an operating table and is transferred lying from one support to the other at least four times .

To limit the number of supports, convertible beds have been developed. By way of example, such a bed is described in document WO95 / 19755. According to one embodiment, this bed comprises:

- a rolling base,

a frame supported by the base, movable in height relative to said base, a platform supported by the frame, which comprises four panels, a first panel which forms a backrest, a second panel which forms a seat, a third panel to support the upper legs and a fourth panel to support the lower legs,

a mattress that covers the platform. The platform comprises a mobile carriage to which the seat is connected. The backrest is connected to the seat via a first pivotal connection with a first horizontal pivot axis, the upper leg panel is connected to the seat by a second pivotal connection with a second pivot axis parallel to the first pivot axis and the lower leg panel is connected to the upper leg panel by a third pivotal connection with a third pivot axis parallel to the first pivot axis.

This bed comprises a first actuator interposed between the seat and the panel for lower legs to cause a tilting of the panel for lower legs down, a second actuator interposed between the carriage and the backrest to cause the recovery of the backrest and a third actuator interposed between the movable carriage and the panel for the upper legs to cause the inclination of the panel for the upper legs to prevent the panel for lower leg rubs on the ground. The maximum angle of inclination is of the order of 5 °.

This type of bed convertible into a chair includes a complex kinematics. According to another disadvantage, it does not allow to optimally relax the patient.

However, the period before surgery is an anxiety period for patients. To limit this state of anxiety, a medication is planned to prevent some patients feel but after waking.

The present invention aims to overcome the disadvantages of the prior art by providing an ambulatory chair that is configured to implement a relaxation process.

For this purpose, the subject of the invention is a method of relaxation of a person positioned on a chair which comprises a seat, a backrest connected to a first edge of the seat and a leg support connected to a second edge of the seat. seat, characterized in that the method consists in arranging a person on the chair positioned:

the seat of the inclined chair so as to form with the horizontal an angle α between 20 ° and 50 °,

the back of the raised backrest relative to the seat so as to form with the horizontal an angle a2 between 20 ° and 50 °,

the support of the legs of the chair inclined downwards with respect to the seat so as to form with the horizontal an angle a3 between 5 and 45 °, and subjecting the person to vibrations with frequencies between 5 and 300 Hz. The combination of this so-called relaxation position and stimuli makes it possible to achieve a high level of relaxation. Used upstream of an operation, this relaxation process makes it possible to relax the patient so that it is possible to eliminate the pre-medication and to reduce the dose of anesthesia.

Advantageously, the chair is mobile. In this case, the chair in the relaxation position can be used as a stretcher. Thus, after a relaxation cycle, the patient can be moved in this position to the operating room so as not to lose the deep relaxation effect to potentially suppress the pre-medication and decrease the dose of anesthesia. Eventually, he may be woken up in this position to potentially improve the physiological state to lessen the problems associated with anesthetic awakening and pain.

The invention also relates to a multipurpose and autonomous ambulatory surgery chair for implementing this relaxation method.

This chair is configured to occupy four positions:

a first position with a straight seat in which the chair can be used for the reception of the patient, for collation or at the end of the cycle, just before the exit of the patient,

a second horizontal lying position in which the device can be used as an operating table,

a third position called Trendelenburg position, inclined up to 30 ° (ideally

12 °) in case of emergency during anesthesia or operation, in which the patient's head is lower than his feet,

a fourth position of relaxation.

Thus, this versatile chair allows a patient not to change support during a stay in outpatient surgery.

Other features and advantages will become apparent from the following description of the invention, a description given by way of example only, with reference to the appended drawings in which:

FIG. 1A is a diagram of an ambulatory chair in a first position, FIG. 1B is a diagram of an ambulatory chair in a second recumbent position,

FIG. 1C is a diagram of an ambulatory chair in a relaxation position, FIG. 1D is a diagram of a chair in a reclined and inclined position, FIG. 2 is a perspective view of an ambulatory chair in the first position which illustrates a first embodiment of the invention,

FIG. 3 is a perspective view of the ambulatory chair visible in FIG. 2 in the relaxation position,

FIG. 4 is a front view of a control used to control the ambulatory chair according to the invention,

FIG. 5 is a perspective view of a seat of the ambulatory chair visible in FIG. 2 in the first position,

FIG. 6 is a perspective view of the seat of the ambulatory chair visible in FIG. 2 in the relaxation position,

FIG. 7 is a view which illustrates the back of the file,

Figure 8 is a bottom view of the seat in the elongated and inclined position, Figure 9 is a longitudinal section of the chair back which illustrates an embodiment of a handle,

FIG. 10 is a perspective view of an ambulatory chair which illustrates a second embodiment of the invention,

Fig. 11 is a perspective view of an ambulatory chair which illustrates a third embodiment of the invention, and

Figure 12 is a sectional view of a portion of an ambulatory chair.

In the various figures, there is shown in 10 a chair.

This chair 10 comprises a frame 12, a seat 14 supported by the frame 12, a backrest 16 connected by a first hinge 18 to a first edge 20 of the seat 14 and a leg support 22 connected by a second hinge 24 to a second edge 26 of the seat 14, parallel to the first edge 20 of the seat 14.

The seat 14, the backrest 16, the leg support 22 each have a support surface 14S, 16S and 22S substantially flat, square or rectangular. Preferably, the chair 10 comprises at least one comfort coating which covers the bearing surfaces 14S, 16S and 22S. According to one embodiment, the chair 10 comprises a mattress 28 (visible in FIG. 2) which covers the bearing surfaces 14S, 16S and 22S of the seat 14, the backrest 16 and the leg support 22.

Each hinge 18 and 24 comprises a pivotal connection with a pivot axis A18 and A24. Thus, the backrest 16 is configured to pivot about the first pivot axis A18 with respect to the first edge 20 of the seat 14 and the leg support 22 is configured to pivot about the second pivot axis A24 relative to the second edge 26. of the seat 14.

For the rest of the description, the longitudinal direction is a direction parallel to the bearing surface 14S of the seat 14 and perpendicular to the pivot axes A18 and A24. A longitudinal plane is a plane perpendicular to the pivot axes A18 and A24. A transverse plane is a plane perpendicular to the longitudinal direction.

The length of an element corresponds to the dimension of this element taken in the longitudinal direction and the width of an element corresponds to the dimension of this element taken in a transverse plane.

An upper half-space of an element corresponds to the half-space delimited by the element in which the patient is positioned when he is positioned on the chair.

A lower half-space of an element corresponds to the half-space delimited by the element opposite to the upper half-space, in which the ground is located.

The leg support 22 is intended to receive the parts of the lower limbs of an individual who go from the knees to the feet. The seat 14 is intended to receive the parts of the lower limbs of an individual who go from the buttocks to the knees. The file 16 is intended to receive the back and the head of an individual.

To give an order of magnitude, the seat 14, the backrest 16 and the leg support 22 have the same width of the order of 60 cm. The seat 14 has a length of about 50 cm, the leg support 22 a length of about 50 cm and the backrest 16 of the order of 90 cm. The chairs do not all have the same dimensions and the lengths and widths of the seat 14, the backrest 16 and the leg support 22 may vary from one chair to another. Thus, some chairs may have dimensions suitable for small individuals such as children or sizes suitable for large individuals. According to an embodiment visible for example in Figures 6 and 8, the seat 14 comprises a plate 30, a first face forms the bearing surface 14S and a frame 32 fixed against the second face of the plate 30 which comprises two cross members 32.1 and 32.2 parallel to each other and perpendicular to the longitudinal direction and two right and left uprights 32.3 and 32.4 oriented in the longitudinal direction and connecting the cross members 32.1 and 32.2. The first cross member 32.1 forms the first edge 20 of the seat 14 and the second cross member 32.2 forms the second edge 26 of the seat 14.

According to an embodiment visible for example in Figure 7, the backrest 16 comprises a plate 34, a first face forms the bearing surface 16S and a frame 36 fixed against the second face of the plate 34 which has a top rail 36.1. , a lower cross member 36.2 parallel to the upper cross member 36.1 and connected to the first edge 20 of the seat 14 by the hinge 18 and two right and left uprights 36.3 and 36.4 arranged in longitudinal planes and connecting the cross members 32.1 and 32.2. The backrest comprises at least one intermediate cross member 36.5, interposed between the upper and lower cross members 36.1 and 36.2.

According to one embodiment, the leg support 22 comprises a plate 38, a first face forms the bearing surface 22S and a frame 40 fixed against the second face of the plate 38 which has an upper cross member 40.1 connected to the second edge 26 of the seat 14 by the hinge 24, a lower cross member parallel to the upper rail and two right and left uprights 40.3 and 40.4 arranged in longitudinal planes and connecting the upper and lower rails.

According to one configuration, all the sleepers are parallel, the right uprights 32.3, 36.3, 40.3 are arranged end to end and the left uprights 32.4, 36.4 and 40.4 are arranged end to end.

According to one embodiment, the first hinge 18 comprises two tabs P18 integral with the right and left uprights of the backrest 16, arranged in longitudinal planes at each end of the first crossbar 32.1. At each end of the first cross member 32.1, the first articulation 18 comprises an axis of rotation which pivotally connects the end of the first cross member 32.1 to one of the legs P18.

According to one embodiment, the second articulation 24 comprises two legs P24 integral with the right and left uprights of the seat 14, arranged in longitudinal planes at each end of the upper cross member 40.1 of the leg support 22. At each end of the upper cross member 40.1, the second articulation 24 comprises an axis of rotation which pivotally connects the end of the upper cross member 40.1 of the seat to one of the legs P24.

Of course, the invention is not limited to this embodiment for the seat 14, the backrest 16, the leg support 22 and / or for the first and second joints 18 and 24.

According to a feature of the invention, the chair comprises a third hinge 42 in the form of a pivotal connection with a third pivot axis A42 which connects the seat 14 and the frame 12, the third pivot axis A42 being parallel to the first and second pivot axes A18 and A24 and positioned at the first edge 20 of the seat 14.

The chair 10 comprises:

A first actuator 44 interposed between the seat 14 and the backrest 16, configured to pivot about the first pivot axis A18 the backrest 16 relative to the seat 14 in an angular range from 0 ° to 90 °, the 0 ° angle corresponding to the position in which the bearing surfaces 14S and 16S of the seat 14 and the backrest 16 are substantially coplanar, the angle 90 ° corresponding to the position in which the bearing surfaces 14S and 16S of the seat 14 and the backrest 16 form a 90 ° angle, the backrest 16 being disposed in the upper half-space of the seat 14,

A second actuator 46 interposed between the seat 14 and the leg support 22, configured to pivot about the second pivot axis A24 the leg support 22 relative to the seat 14 in an angular range from 0 ° to 90 0 ° angle corresponding to the position in which the bearing surfaces 14S and 22S of the seat 14 and the leg support 22 are substantially coplanar, the angle 90 ° corresponding to the position in which the surfaces of 14S and 22S support of the seat 14 and the leg support 22 form an angle of 90 °, the leg support 22 being disposed in the lower half-space of the seat 14,

A third actuator 48 interposed between the seat 14 and the frame 12, configured to pivot about the third pivot axis A42 the seat 14 relative to the frame 12 in an angular range from 0 ° to 90 °, the angle 0 ° corresponding to the position in which the seat 14 is substantially horizontal, the angle at 90 ° corresponding to the position in which the seat 14 is substantially vertical, the second edge 26 being further away from the frame 12 than the first edge 20.

According to one embodiment, each actuator 44, 46, 48 is an electric jack.

According to a configuration, the first actuator 44 is connected on the one hand to the first cross member

32.1 of the seat 14 and secondly to the intermediate cross member 36.5 of the folder 16. This first actuator 44 is positioned parallel to the left post 36.4 and close to the latter.

The second actuator 46 is connected firstly to the left amount 32.4 of the seat 14, near the second cross member 32.2 and secondly to the left leg 40.4 of the leg support 22 near the bottom rail.

The third actuator 48 is connected on the one hand to the frame 12 and on the other hand to the right upright

32.3 of the seat 14 near the second crossbar 32.2.

According to a configuration of the invention, the chair 10 is configured to occupy several positions:

- A first seated position visible in Figure 1A, wherein the seat 14 is substantially horizontal, the backrest 16 is raised forming with the seat 14 an angle close to 90 ° and the leg support 22 is lowered and forms an angle greater than 45 ° with respect to the seat 14,

a second horizontally elongated position, visible in FIG. 1B, in which the bearing surfaces 14S, 16S and 22S of the seat 14, of the backrest 16 and of the leg support 22 are coplanar and substantially horizontal,

a third elongated and inclined position, head downwards, visible in FIG. 1D, in which the bearing surfaces 14S, 16S and 22S of the seat 14, of the backrest 16 and of the leg support 22 are coplanar and inclined from so that the file 16 is lower than the leg support 22,

a fourth so-called relaxation position, visible in FIG. 1C, in which the seat 14 is inclined and forms with the horizontal an angle α between 20 ° and 50 °, the backrest 16 is raised with respect to the seat 14 and forms with the horizontal an angle a2 between 20 ° and 50 °, and the leg support 22 is inclined downwards relative to the seat 14 and forms with the horizontal an angle a3 between 5 and

45 °. In the relaxation position, the backrest 16 and the seat 14 form an angle of between 100 and 130 ° and preferably of the order of 115 °. The seat 14 and the leg support 22 form an angle of between 90 and 135 °. When the seat 14 and the leg support 22 form an angle of the order of 135 °, the leg support 22 is substantially horizontal. In the relaxation position, the user's nose is disposed substantially at the same height as the knees.

In the first position, the actuators 44, 46, 48 are in a first state.

In the second position, the first and second actuators 44, 46 are in a second state, the first actuator always being in the first state.

In the third position, the third actuator 48 is in a second state, the first and second actuators 44, 46 always being in the second state.

In the fourth relaxation position, the actuators 44, 46, 48 are in a third state.

According to a configuration of the invention, it is possible to obtain four positions, from three moving parts relative to each other and three actuators configured to occupy three predefined states.

According to another characteristic, the chair 10 comprises at least one stimulus emission system.

Preferably, the chair 10 comprises several types of stimulus emitting systems. Advantageously, the chair 10 comprises a first type of stimuli emission systems configured to emit vibrations, a second type of stimulus emission systems configured to emit sounds and to stimulate hearing, a third type of stimulus emission systems. Stimulus broadcast configured to emit images and stimulate the view.

According to one configuration, the seat 14, the backrest 16 and the leg support 22 each comprise at least one vibration emission system 50, 50 ', 50 ", 50"'.

According to one embodiment, the seat 14 comprises a vibration emission system 50 pressed against the second face of the plate 30, positioned so as to be placed approximately under the buttocks of the individual installed on the chair. The backrest 16 includes two vibration emitting systems 50 ', 50 ", pressed against the second face of the plate 34, a first vibration emitting system 50' being positioned to be located approximately at the bottom of the back of the individual installed on the chair, a second vibration emitting system 50 "being positioned so as to be placed approximately between the shoulder blades of the individual installed on the chair, the leg support 22 comprises a vibration emitting system 50"', pressed against the second face of the plate 38, positioned so as to be placed approximately at the level of the calves of the individual installed on the chair.

The combination of the relaxation position and the stimulus emission system makes it possible to reach a high level of relaxation. Used upstream of an operation, the chair can relax the patient so that it is possible to remove the medication prior to anesthesia.

The invention also relates to a relaxation method which consists of positioning the patient in the relaxation position and subjecting him to stimuli which include vibrations, psychoacoustic audio tapes and light.

The vibrations have frequencies between 5 and 300 Hz with an optimum frequency range of the order of 40 to 80 Hz. Preferably, the frequencies are transmitted for a given duration and fluctuate in the range of 5 to 300 Hz, plus particularly in the range of 40 to 80 Hz. Advantageously, the frequencies vary randomly.

According to one embodiment, the vibration emitting systems are tactile transducers (Tactile transducers in English) which make it possible to feel in the form of vibration the sound and simultaneously to hear it in the frequency range indicated above. These tactile transducers are associated with an amplifier.

According to one configuration, the amplifier is fixed and is not integrated into the chair. It is connected to the transducers (integral with the chair) by wired links with quick-connect connectors.

Psychoacoustic stimulation includes, for example, monaural and binaural beats for brain training, three-dimensional nature soundtracks, non-linear music, etc.

In addition to the transducers that emit monaural beats, an audio headset emits the sound composition with binaural beats and a mask affixed to the eyes emits light pulsations by LED stroboscopic type corresponding to monaural beats. Thus, the patient receives psychoacoustic induction in a synchronized manner through all his senses. He hears what he feels and sees. Advantageously, the chair 10 comprises at least one heating system 51 (visible in Figure 9) configured to heat at least one area in contact with the individual installed on the chair 10. According to one embodiment, the heating system is present in the form of a coating, a plate or a film interposed between the plates 30, 34, 38 and the mattress 28. This heating function helps to enhance the relaxation and to reduce the sensation of cold following deep relaxation, caused by changing the mode of the nervous system from sympathetic to parasympathetic.

According to another characteristic of the invention visible in FIG. 12, the seat 14, the backrest 16 and the leg support 22 each comprise at least one plate 30, 34, 38, a structure, such as a frame 32, 36, 38, supporting the plate 30, 34, 38, at least one vibration emission system 50, 50 ', 50 ", 50"' connected to the plate 30, 34, 38 and intermediate pieces 53, consisting of a flexible material such as rubber, for absorbing vibrations, interposed between the plate 30, 34, 38 and the structure 32, 36, 38. These intermediate parts 53 are configured to limit the propagation of vibrations of the plates 30 , 34, 38 to the rest of the elements of the chair 10.

According to another characteristic of the invention, the chair 10 is adjustable in height. For this purpose, the frame 12 comprises a lower portion 52 and an upper portion 54 connected to the seat 14 and movable relative to the lower portion 52 in the vertical direction to allow adjustment in height of the seat 14.

According to another characteristic of the invention, the frame 12 of the chair is movable.

According to an embodiment visible in Figures 2 to 8, 10 and 11, the frame 12 comprises a base 56, four arms 58 connected to the base 56 and arranged so that their free ends are arranged at the vertices of a rectangle , and four wheels 60, each connected to the end of an arm. Preferably, the wheels 60 are multidirectional and pivotable about a vertical axis. At least one of these wheels comprises a braking system to enable the wheelchair to be immobilized. At least some of these wheels can be motor. The frame 12 also comprises at least one vertically oriented telescopic column 62 and a support 64 connected by the third articulation 42 to the seat 14. The telescopic column 62 comprises a lower end connected to the base 56 and an upper end connected to the support 64 This telescopic column 62 makes it possible to adjust the height of the seat 14. According to an embodiment visible in Figures 2 to 8, the frame 12 comprises a single telescopic column 62 and the support 64 comprises a frame substantially identical to the frame 32 of the seat 14 and an intermediate cross member 68 which connects the telescopic column 62 to the frame 66. According to one configuration, the frame 66 comprises a first cross member 66.1 which abuts the first cross member 32.1 of the frame 32 of the seat 14, a second cross member 66.2 which abuts the second cross member 32.2 of the frame 32 of the seat 14, a right upright 66.3 which adjoins the upright 32.3 of the frame 32 of the seat 14, a left amount 66.4 which adjoins the left amount 32.4 of the frame 32 of the seat 14 when the seat 14 is horizontal. The frame comprises a fifth side 66.5 which connects the left post 66.4 and the second cross member 32.2 to clear a space for housing the second actuator 46.

According to other embodiments visible in Figures 10 and 11, the frame 12 comprises two telescopic columns 62, 62 'spaced in the longitudinal direction to reinforce the rigidity of the seat 14, the backrest 16, the leg support 22 when these elements 14, 16, 22 are in the second and third positions lying horizontally or inclined.

According to a first mode of operation of these second and third embodiments, the two telescopic columns 62, 62 'have identical and simultaneous vertical movements to obtain a vertical movement. According to a second mode of operation, the two telescopic columns 62, 62 'can have identical or different movements to allow to incline the seat 14, the backrest 16 and the leg support 22 and to obtain the elongated inclined position.

According to the second embodiment shown in Figure 10, the support 64 comprises a frame 102 with at least two longitudinal members 102.1, 102.2, 102.3 and cross members 102.4, 102.5. This frame 102 is sized to extend under the seat 12 and the backrest 16 and not extend under the leg support 22 when the chair 10 is in the first sitting position or in the second and third elongated positions horizontal and inclined. At least one of the cross members 102.4 may comprise a plurality of staggered sections in the longitudinal direction to allow the movement of the actuator 46.

This second embodiment allows the chair to be able to occupy the four positions visible in Figures 1 to 4 and to stiffen the chair.

According to the third embodiment shown in Figure 11, the support 64 comprises a frame 104 with at least two longitudinal members 104.1, 104.2, 104.3 and cross members 104.4, 104.5. This frame 104 is dimensioned to extend under the seat 12, the backrest 16 and the leg support 22 when the chair 10 is in the second and third elongated horizontal and inclined positions.

This third embodiment allows the chair to occupy the second and third elongated positions horizontal or inclined and the fourth position of relaxation. This third embodiment makes it possible to reinforce the rigidity of the chair, particularly when the latter is in the extended position.

Preferably, the free ends of the arms 58 are as spaced as possible to improve the stability of the chair and to allow the passage of the leg support 22 when the chair is in the first position visible in Figure 1A.

Advantageously, the chair comprises at least one handle 70 to allow a person to manipulate the chair 10. This handle 70 comprises a main portion 72 rectilinear parallel to the cross members 36.1, 36.2, 36.5 of the file 16 and two curved portions 74 at each end of the main part 72, connected to the right and left uprights 36.3 and 36.4. The handle 70 is positioned near the upper cross member 36.1 to facilitate its grip. According to one feature, the handle 70 is positioned in a plane which forms an angle α4 of the order of 45 ° with the backrest 16, as illustrated in FIG. 9. This position gives a better grip of the handle 70 when the chair is in the relaxation position.

According to one embodiment, the chair 10 can comprise:

side barriers to prevent the fall of a patient,

storage, such as drawers, to store biometric devices,

a roll of disposable paper,

- supports in the form of rails attached to the right uprights 32.3, 36.3, 40.3 and / or the left amounts 32.4, 36.4 and 40.4 for hanging accessories, such as removable armrests, a serum holder, a tablet for resting the feet , surgical instruments, etc.

casters at each angle, with vertical axes of rotation, to limit friction against the walls and reduce the impact of shocks for example, fairings to hide including the joints and the base 56. When the frame 12 is mobile, the chair 10 can be used to route a patient during a whole course of ambulatory hospitalization. Thus, the chair 10 can be used:

as a wheelchair when in the first position,

as a stretcher when in the horizontal lying position visible in FIG. 1B,

as an operating table, when in the horizontal lying position, with the possibility of adjusting the inclination and the height of the table as shown in FIG. 2A,

as a relaxation chair, when it is in the relaxation position visible in FIG. 1C.

According to another characteristic, the chair 10 comprises a control 76 for controlling the actuators 44, 46, 48, the telescopic column 62 and possibly the heating system.

As illustrated in FIG. 4, the command 76 comprises:

a first key 78 to position the chair in the first position, a second key 80 to position the chair in the relaxation position, a third key 82 to position the chair in the second position, a fourth key 84 to position the chair in the third position. A first pair of keys 86, 86 'configured to control the first actuator 44 and thus the pivoting of the backrest respectively in a first direction for the righting or in a second direction to lower it,

A second pair of keys 88, 88 'configured to control the second actuator 46 and thus the pivoting of the leg support 22 respectively in a first direction to raise it or in a second direction to lower it,

A third pair of keys 90, 90 'configured to control the telescopic column 62 and thus the height of the seat 14,

A fourth pair of keys 92, 92 'configured to control the third actuator 48 and thus the inclination of the seat 14,

- A stop key 94,

A lock key 96 for locking the chair in a given position, A heating key 98 to start or stop the heating system,

A key 100 to trigger an alert or a call.

According to one feature, the chair comprises sensors for knowing the position of the movable elements of the chair.

The control comprises a memory in which are stored for each actuator 44, 46, 48, the three predefined states to configure the chair according to the four preprogrammed positions. Thus, by pressing the first key 78, the control 76 drives the actuators 44, 46, 48 so that they are each positioned in the first state. The memory may also include a predefined value for the height of the telescopic column.

By pressing the second key 80, the control 76 drives the actuators 44, 46, 48 so that they are each positioned in the third state.

By pressing the third key 82, the control drives the first and second actuators 44, 46 so that they are each positioned in the second state and the third actuator 48 so that it is positioned in the first state.

Finally, by pressing the fourth key 84, the control drives the actuators 44, 46, 48 so that they are each positioned in the second state.

The control according to the invention makes it easy to control the chair and to position it according to four preprogrammed positions.

Claims

A method of relaxing a person positioned on a chair which comprises a seat (14), a backrest (16) connected to a first edge (20) of the seat (14) and a leg support (22) connected at a second edge (26) of the seat (14), characterized in that the method consists in arranging a person on the chair positioned:

the seat (14) inclined so as to form with the horizontal an angle α between

20 ° and 50 °, the second edge (26) being higher than the first edge (20),

the backrest (16) raised relative to the seat (14) so as to form with the horizontal an angle a2 between 20 ° and 50 °,

the leg support (22) inclined downwards with respect to the seat (14) so as to form with the horizontal an angle a3 between 5 and 45 °,

and subjecting the person to vibrations with frequencies between 5 and 300 Hz.

2. Relaxation method according to claim 1, characterized in that the vibrations are emitted by tactile transducers which allow to feel in the form of vibration a sound and simultaneously hear it.

3. Armchair for implementing the method according to one of the preceding claims, said chair comprising a seat (14), a backrest (16) connected to a first edge (20) of the seat (14) and a support leg assembly (22) connected to a second edge (26) of the seat (14) and being characterized in that it comprises a first actuator (44) interposed between the seat (14) and the backrest (16), configured to rotate the backrest (16) about a first pivot axis (A18) relative to the seat (14), a second actuator (46) interposed between the seat (14) and the leg support ( 22), configured to pivot the leg support (22) about a second pivot axis (A24) relative to the seat (14), a third actuator (48) interposed between the seat (14) and a frame (12) configured to pivot the seat (14) about a third pivot axis (A42) relative to the frame (12) and at least one configured vibration emitting system to emit vibrations with frequencies between 5 and 300 Hz.

4. Armchair according to the preceding claim, characterized in that each vibration emitting system is a tactile transducer that allows to feel in vibration form a sound and simultaneously hear it.

5. Chair according to claim 3 or 4, characterized in that the seat (14), the backrest (16) and the leg support (22) each comprise at least one vibration emission system (50, 50 '). , 50 ", 50" ')

6. A chair according to the preceding claim, characterized in that the seat (14) comprises a vibration emission system (50) positioned to be placed approximately under a gluteal of an individual installed on the chair, in that the backrest (16) comprises a first vibration emitting system (50 ') positioned to be located approximately at the lower back of the individual on the chair and a second vibration emitting system ( 50 ") positioned to be placed approximately between the shoulder blades of the individual installed on the chair and in that the leg support (22) comprises a vibration emitting system (50" ') positioned so as to be placed approximately at the level of the calves of the individual installed on the armchair.

7. Chair according to one of claims 3 to 6, characterized in that it comprises at least one heating system configured to heat at least one area in contact with an individual installed on the chair.

8. Chair according to one of claims 3 to 7, characterized in that it comprises a frame (12) movable.

9. Armchair according to the preceding claim, characterized in that the frame (12) comprises a base (56), four arms (58) connected to the base (56) and arranged so that their free ends are arranged at the vertices of a rectangle, and four wheels (60), each connected to the free end of an arm (58), the free ends of the arms (58) being spaced apart to allow passage of the leg support (22).

10. Chair according to one of claims 3 to 9, characterized in that it comprises a frame (12) which comprises a lower portion (52) and an upper portion (54) connected to the seat (14) and movable relative to the lower portion (52) in the vertical direction.

11. Armchair according to the preceding claim, characterized in that the frame (12) comprises two telescopic columns (62, 62 ') spaced in the longitudinal direction, interposed between the lower portion (52) and the upper portion (54).

12. Chair according to the preceding claim, characterized in that the upper part

(54) includes a frame (104) having at least two spars (104.1, 104.2, 104.3) and cross members (104.4, 104.5) and being sized to extend under the seat (12), the backrest (16) and the leg support (22) when the chair (10) is in elongate positions.

13. A chair according to claim 11, characterized in that the upper part comprises a frame (102) which has at least two longitudinal members (102.1, 102.2, 102.3) and cross members (102.4, 102.5) and which is positioned so that extend under the seat (12) and the backrest (16) and not extend under the leg support (22) when the chair (10) is in a first sitting position or in second and third elongated horizontal positions and inclined.

14. Chair according to one of claims 3 to 13, characterized in that it comprises at least one handle (70) positioned in a plane which forms an angle a4 of the order of 45 ° with the folder (16).

15. Chair according to one of claims 3 to 14, characterized in that it comprises a control (76) with a memory in which are stored three predefined states for each actuator (44, 46, 48) to configure the chair in four preprogrammed positions, said control (76) comprising four keys (78, 80, 82, 84) each corresponding to a preprogrammed position.