• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
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    • 专利摘要:
    Device (1) suitable for measuring signals of the brain activity of an individual, intended to be affixed to the head of said individual having a structure (2) for the port of sensors, said structure allowing adjustment of the position of the sensors. According to the invention, said structure of the device comprising: - a central support (2), deformable, adapted to adapt to the head curvature, intended to be positioned along the head, preferably along the median plane of the skull flexible guides (3), extending laterally from said central support, spaced apart from each other - sensor supports (41, 42) secured to and fixed to said flexible guides (3), with adjustable positions along the flexible guides (3), - a system (5, 6) for tensioning said flexible guides.
    公开号:FR3028743A1
    申请号:FR1461283
    申请日:2014-11-21
    公开日:2016-05-27
    发明作者:Fabrice Wallois；Mahdi Mahmoudzadeh；Reinhard Grebe；Laurent Malterre；Javad Safaie
    申请人:Amiens Picardie Jules Verne, University of；Malterre Sarl Ets；Institut National de la Sante et de la Recherche Medicale INSERM；Centre Hospitalier Universitaire；
    IPC主号:
    专利说明:

    [0001] The present invention relates to a device for measuring signals of brain activity, able to be positioned on the head of an individual. The device will find a particular application for measuring, on the one hand, by electroencephalography the electrical activity of the brain, and on the other hand, by spectroscopy in the near infrared, data relating to the hydrodynamic conditions of the circulation in the brain, such as than tissue oxygenation. Electroencephalogram devices with electrodes are known which allow the acquisition of an electroencephalogram, that is to say the recording in the form of a signal of the electrical activity of the brain. These devices use sensors constituting electrical electrodes that are arranged on the head of individuals to diagnose or explore through helmets or caps, usually called "Helmet ElectroEncephaloGraphy" (or EEG headphones). Such cloth hats have been marketed under the brand name "Easycap". Fabric helmets have the disadvantage of not being able to easily handle the individual's hair which disturbs the near-infrared spectroscopy acquisition signals. Indeed, the hair must be removed from the measuring field. In addition, Near Infrared Spectroscopy (IRIS), also known as "NIRS" for near-infrared spectroscopy (in English) in wavelengths between 600 and 900 nm, allows to account for hemodynamic activity. of the brain in the form of a signal, the sensors used being optical detectors (optical fibers, photodiodes) or emitters (Optical Fiber LEDs) of photons, also called "optodes". Often, these devices are equipped with electrodes only, and designed only to perform an electroencephalogram, or alternatively equipped with emitters and optical detectors and designed to perform near infrared spectroscopy. In other words, these dedicated devices do not allow the simultaneous measurement of signals by electroencephalography and by near-infrared spectroscopy. The fabric helmets designed for the electrodes are too flexible to correctly allow the arrangement with respect to the surface of the head of the optodes whose too heavy supports induce deformation of the tissue. These loose cloth helmets prevent keeping a provision of optodes strictly perpendicular to the skull of the individual, and this throughout the duration of registration. Also, such flexible helmets do not make it possible to obtain an accurate spatial resolution and a reliable measurement of the signals of electrical and hemodynamic activities of cerebral origin. The prior art, however, knows from document FR 2 899 089 a signal sensor device comprising an electrode and an optode disposed on the same support and concentrically with respect to an axis intended to be substantially perpendicular to the head. Such a device advantageously makes it possible to precisely target the same zone of interest on the head of the individual and so as to enable the simultaneous measurement of signals by electroencephalography and by near-infrared spectroscopy. Such an EEG / NIRS sensor device, however, has the disadvantage of a non-competitive cost price, compared to two structurally independent sensors, respectively an electrode and an optode. There are more rigid helmets that combine the wearing of electrodes and that of optodes, so-called modular headsets, such as those marketed under the trademark Shimadzu®. These relatively rigid plastic helmets are of polypropylene type and cover the entire head being provided with a plurality of distinct orifices depending on the type of sensor to be received. However, the arrangement on the head of a person of the devices described above is not satisfactory with regard to the quality of the contacts of the electrical and optical devices due to curvatures of the head, hair and lack of flexibility of the device, especially for young children and newborns. Also known are structures that are not bonnets and have bands or straps of latex or rubber which connect between them nodes forming sensor supports or electrodes. The structure thus made in the form of a network provides recesses for the passage of the hair. For example, patent applications FR 2 627 975, US 2010/274153, EP 0 541 393 and WO 99/22642 may be mentioned.
    [0002] However, the locations of the nodes are pre-established and do not always allow the proper positioning of the sensors and electrodes according to the head of the individual. In addition, for some structures, the elastic straps promote sweating and can cause too much application pressure on the head, particularly of an infant. NR Sign Inc. is still known from the "EEG" helmet (http: //www.nrsign.comleeg-cap/), whose helmet structure includes two frames connected by a chin strap. These two frames are intended to be arranged on either side of the head, respectively at least locally below the ears. A set of elastic silicone yarns connect the two frames by skirting the head from above, the wires extending laterally to the head, and spaced apart from each other. Once put in tension between the two armatures, each silicone wire makes it possible to maintain an electrode support, pinched elastically between the head of the individual and the silicone thread, the silicone thread then in simple support on the support of electrode .
    [0003] Such a device has the advantage of allowing precise (continuous) adjustment of the electrode holder along the silicone wire. On the other hand, and according to the findings of the inventors, such a helmet has major disadvantages, and in particular: the design and size of the sensor supports only allow the positioning of a small number of EEG electrodes on the head of an individual; such a device does not allow in any case the simultaneous positioning of electrode sensors and optodes sensors, structurally independent, and in a concentration to target the same areas of interest, - the establishment of such a headset In particular, the adjustment of the positions of the sensor supports along the silicone threads must necessarily be done directly on the head of the individual: in other words, it is not possible to predispose the sensor supports to a manikin head. in that, once the helmet is removed from the manikin, the positioning adjustments are lost.
    [0004] WO2012 / 156643 discloses a device for measuring signals of brain activity intended to be affixed to the head of an individual, and which makes it possible to simultaneously measure signals by electroencephalography and by near-infrared spectroscopy. the device having parts for accommodating electrodes, on the one hand, and other parts for receiving detectors and optical transmitters (optodes), on the other hand. The structure of this device comprises a central chain and side chains, each resulting from the assembly of constituent links, in articulation relative to each other. Some of the links comprise the parts adapted to the support 10 of the electrodes, other links of the parts to the support of optodes. According to the findings of the inventors, such a device structure has the following drawbacks: the chains (central or lateral), resulting from the assembly of rigid links are at the origin of pains for the individual, in that the chains These linkages support the head in a plurality of "hard" contacts. Such a link structure certainly permits adjustment of the positions of the sensors (electrodes or optodes) in different possible mounting positions on the links. However, it is only a positional adjustment in several pre-established discrete positions, defined by the links, and not a possibility of continuous adjustment along the chains, according to the inventors' observations, the concentration of the different sensors can still be improved. The present invention aims to overcome the aforementioned drawbacks by proposing a device for measuring cerebral activity signals whose structure allows, at least according to particular embodiments: - access to the scalp and so as to to free the hair from the sensors, in particular the optode emitters / detectors, and / or the electrodes, - a wear comfort for the user, without creating too much pressure causing pain, positions of the different sensor supports (s), in different positions, and preferably in a continuous manner along lateral guides, 5 - to proceed with the mounting of the device, including to make pre-adjustments of the positions of the different sensor supports (s) on a manikin head, then removing the device thus prepared and in order to affix it on the head of an individual, advantageously without loss of positioning settings, - d e carry a large number of sensors, in particular electrodes and optodes, and a spatial density allowing the simultaneous acquisition of signals by electroencephalography and by near-infrared spectroscopy, on targeted areas of interest. Also, the invention relates to a device suitable for measuring the signals of the brain activity of an individual, intended to be affixed to the head of said individual having a structure intended for the port of sensors, said structure allowing adjustment of the position According to the invention, said structure of the device comprising: a central support, preferably deformable, adapted to adapt to the head curvature, intended to be positioned along the head, preferably according to the plane; medial skull, - flexible guides, extending laterally to said central support, spaced from each other, - sensor supports (s), integral and fixed to said flexible guides, adjustable positions along the flexible guides, - a system for tensioning said flexible guides.
    [0005] According to optional features of the invention, taken alone or in combination: said system for tensioning said flexible guides comprises, on the one hand, on each side of the wearer's head, a rigid frame intended for extend at least locally under the ear, the two armatures being preferably connected by a chin strap, and secondly, elastics, each secured by one of its ends to the lower end end of the a corresponding one of said flexible guides, each elastic being intended to be fixed to said armature to ensure the tensioning of the corresponding flexible guide; said tensioning system comprises means for adjusting the tension of the elastic; the means for adjusting the tension of the elastic comprises an opening for passage of the reinforcement for the elastic, said passage opening being dimensioned smaller with respect to the section of the elastic, and in such a way that: a manual tensile force on the free end of the elastic allows the elastic to slide through said passage opening, and thus an adjustment by increasing the tension, and when the manual effort is no longer - The friction between the passage opening and the elastic are such that they prohibit sliding, ensuring the tensioning of the corresponding flexible guide; The flexible guides are in an inelastic material; - the flexible guides are in a textile; said flexible guides are strips; said sensor supports are of adjustable positions along the flexible guides, said sensor supports having loops for the flexible guides allowing such a position adjustment; After the manual adjustment operation has been performed, the position of the sensor support on the flexible guide is maintained by the friction between the flexible guide and the sensor support; said sensor supports each comprise a portion having a foot, in particular an elastomer, intended to press on the wearer's head; said portion of said sensor support (s) having the support foot comprises two so-called loops, positioned respectively on either side of said foot, both crossed by one of the flexible guides, as well as a dorsal surface on which supports the length section of said intermediate flexible guide between the two passers-by; All or part of the sensor supports are so-called multiple sensor supports, each enabling the support of at least two physically distinct sensors; said so-called multiple sensor supports comprise sensor supports for two sensors intended to be positioned on either side of said support foot; said so-called multiple sensor supports comprise sensor supports for four sensors, intended to be distributed around said support foot; each sensor is intended to be slidably mounted relative to the part of the sensor support equipped with the support foot, a spring element, such as a compression spring, being configured to constrain the sensor towards and towards the support on the head of the individual; 20 - said part of the sensor support (s) equipped with said support foot being called fixed part, said sensor support (s) comprises, for the or each sensor, a movable part with respect to said fixed part, on which is solidarisé the sensor, said spring element being provided between said fixed portion and said movable portion of said sensor support (s); said fixed part comprises, for the or each sensor, a hollow, in particular cylindrical, conformation within which is intended to slide said movable part and in which said movable part of the sensor support (s) has an end terminal for attaching a sensor, and a guide surface for sliding along the inner wall of the hollow conformation; Said movable portion has a projecting portion extending through an upper opening of the hollow conformation, a locking member, such as a pin, being removably mounted on the projecting portion, so as to on the one hand, maintaining and locking said moving part to said fixed part of said sensor support (s) and, on the other hand, allowing, once the locking member has been withdrawn, the removal and disassembly of the moving part with respect to said fixed part; - The locking member takes the form of a loop, for gripping, and to move the sensor from the surface of the head when a pulling force is performed on the loop; Said central support has, in the longitudinal direction, a plurality of transverse passages mutually spaced along the length of said central support for the positioning and the respective holding of a plurality of flexible guides, according to different defined spacing positions between said flexible guides; said central support, formed in the direction of the length, a longitudinal channel, function of cable-guide, intended for guiding the wire links of the various sensors; the device comprises a box receiving an electronics for acquiring the signals of the sensors; the device has sensors comprising electrodes for the measurement of signals by electroencephalography and / or optical detectors and emitters for the measurement of signals by spectroscopy in the near infrared; the device comprises a removable cap, in a blackout material, intended to be applied to the sensor support structure of the device, and in such a way as to isolate the sensors from light interference from the ambient environment.
    [0006] The invention also relates to the use of a device according to the invention equipped with sensors comprising said electrodes for the measurement of signals by electroencephalography and said detectors and optical transmitters for the measurement of signals by spectroscopy in the near infrared, for the simultaneous measurement of said signals by electroencephalography and by near-infrared spectroscopy.
    [0007] The invention will be better understood on reading the following description accompanied by the appended drawings in which: FIG. 1 is a perspective view of a device according to the invention applied to the head of an individual Figures 2, 3 and 4 are respectively perspective views, from above, a sectional view along section III-III of Figure 3, of a sensor holder, with two sensors, - Figure 5 is a sectional view of the mobile part of the sensor support, according to the invention according to one embodiment, and suitable for a type of sensor, in particular an electrode, - FIG. 6a is a sectional view of the mobile part of the sensor support, according to the invention according to one embodiment, and suitable for a type of sensor, in particular an emitter of an optode, - Figure 6b is a sectional view of the mobile part of the support of sensors according to the invention according to one embodiment, and to a type of sensor, in particular a detector of an optode, FIGS. 7, 8 and 9 are respectively perspective, top and section views according to section VIII-VIII of FIG. FIGS. 10, 11 and 12 are respectively views from above, of section along the section XX of FIG. 10, and from the front, of a central support, according to an example. FIGS. 13 and 14 are side and front views of the armature (right) of the device; FIG. 15 is an exploded view of a casing, of its cap, and of an electronic card for acquisition of measurement signals.
    [0008] Also, the invention relates to a device 1 suitable for measuring the signals of the brain activity of an individual, intended to be affixed to the head of said individual 3028743 10 having a support structure for the port of sensors, said structure allowing adjustment of the position of the sensors. According to the invention, said structure of the device comprises: a central support 2, preferably deformable, adapted to adapt to the head curvature, intended to be positioned along the head, preferably along the median plane of the head; skull, - flexible guides 3, extending laterally to said central support, in particular on either side of said central support, spaced from each other, - sensor supports (s) 41, 42, fixed and secured to said flexible guides, with 10 adjustable positions along the guides, - a system 5, 6 for tensioning said flexible guides 3. The flexible guides 3 are distributed on the surface of the head, mutually spaced from each other, according to spacings predefined, in particular by said central support 2.
    [0009] This structure makes it possible, during the installation, access to the scalp, and thus to disengage the hair of the sensors positioned by the sensor supports at the different inter-spaces between the flexible guides. The sensor supports (s) 4i, 42 are fixed and integral with said flexible guides 3, but nevertheless of adjustable positions along these guides. This possibility of adjusting the position makes it possible, in particular, to adapt the positions of the various sensors according to the areas of interest to be studied. The fact that the sensor support (s) 41,42 are integral with the flexible guides 3, and not only in simple support, advantageously makes it possible to perform a pre-assembly of the structure, including a preset of the positions of the various sensors on a manikin head, then removing and affixing the structure on the head of the individual, and advantageously without loss of positional adjustments along the flexible guides 3.
    [0010] Said system for tensioning said flexible guides may comprise, on the one hand, on each side of the wearer's head, an armature 6, rigid or semi-rigid, intended to extend at least locally under the ear, the two armatures 6 being preferably connected by a chin guard 61, and on the other hand, elastics 5, each secured at one of its ends to the lower end end of a corresponding one of said flexible guides 3, each elastic 5 being intended to be fixed to said armature 6 to ensure the tensioning of the corresponding flexible guide 3. It will be noted that, according to this advantageous embodiment, the flexible guides 3 and the corresponding elastics 5 are distinct elements: it is thus possible to choose 10 for said flexible guides an inelastic material (for example a conventional textile) in comparison with the material elastics 5 which may be of silicone or of another material of the elastomer type. According to the findings of the inventors, the choice of an inelastic material for the flexible guides 3 (in comparison with the material of the elastics 5) advantageously makes it possible, when presetting the structure on a manikin head, to guarantee that the Once the structure is removed from the manikin and affixed to the head of the individual, the sensors will be positioned substantially in the same positions, and without any positioning offset, such as would be encountered in the case where the flexible guides themselves are in the same position. material that elastics 5.
    [0011] In particular, and in the case where the sensor supports 41, 42 are attached to the flexible guides by means of loops 40,41; 42.44; 43.45 of the supports, traversed by the flexible guides 3, and as described below, the fact of choosing the flexible guides in an inelastic material (or inextensible) avoids, or at least limit, the Section reduction phenomena of the flexible guides when they are tensioned, section reduction which, in the case where the flexible guides would be of an elastic material, would cause a loss of position of the sensor supports along the flexible guides. According to one embodiment, the flexible guides 3 and the sensor supports 41, 42 are arranged and such that the flexible guides 3 rest on the head of said individual, in whole or in part, at the length sections of the guide. flexible 3, intermediate, between the 3028743 12 sensor supports 41,42. In order to allow the stability of the support of the flexible guide 3 and a homogeneous distribution, each flexible guide may take the form of a band, intended to bear on the head, by one of its faces. According to one embodiment, said tensioning system comprises means for adjusting the tension of the elastic. For example, and as illustrated without limitation in Figure 1, the elastic tension adjustment means (each elastic 5) has a passage opening 7 of the frame for the elastic 5, said opening passing 7 being dimensioned lower than the section of the elastic 5, and so that: - a manual tensile force on the free end of the elastic 5 allows the sliding of the elastic through said passage opening 7, and thus an adjustment by increasing the tension, and when the manual force is no longer, - the friction between the passage opening 7 and the elastic 5 are such that they prevent sliding , ensuring the tensioning of the corresponding flexible guide.
    [0012] Such a tensioning system also allows an adjustment of the tension of each flexible guide 3, by putting in tension said corresponding elastic, thus allowing to constrain on the head all the sensor supports carried by this flexible guide. This is advantageously a possibility of continuous adjustment. Other embodiments of voltage adjusting means are possible, in particular, discontinuous type settings, for example by providing a plurality of attachment positions of the elastic (not shown) on the armature and in order to allow different tension efforts. The frame may be a curved plastic member, as illustrated in Figures 13 and 14, for extending, for example, from the back of the head, passing under the ear and up to a side area near the front. Along its length, a plurality of passage openings 7 may allow the insertion of the elastics 5 at the positions most suited to the adjustment. On the inner side in support with the skin, this element can be covered with a flexible material. The possibility of adjusting the sensor supports 41, 42 along the guides can be provided by loops 40, 41; 42, 43, 44, 45 for the flexible guides allowing such a position adjustment. Position adjustment is advantageously effected without removing the sensor support (s) from its flexible guide, by manually sliding it along the flexible guide 3. Once this manual operation has been performed, that is to say the position of said sensor support (s) set, the holding in position of the sensor support on the flexible guide 3 is advantageously provided (only) by the friction between the flexible guide and the sensor support 41,42. According to one embodiment, said sensor supports 41,42 each include a portion having a foot 46 for pressing on the wearer's head. In the case of a multiple sensor support (supporting several physically distinct sensors), this support foot 46 is preferably in a central position with respect to the positions of the various supported sensors. This foot may advantageously be a flexible material, different from the body of the support, for example an elastomer. According to one embodiment, said portion of said sensor support having the support foot 46 may comprise two so-called loops 40,41; 42.44; 43,45, positioned on the sensor support, respectively on either side of said foot 46, both traversed by one of the flexible guides 3, and a dorsal surface 47 on which the length section of said intermediate flexible guide between the two passers 40,41; 42.44; 43.45. According to this embodiment, illustrated in a non-limiting manner, in particular in FIGS. 2 and 3, the flexible guide 3, in particular the strip, passes through a first guide 40, from below the support 41, extends in abutment along the dorsal surface 47, then through a second pass 41, from the top of the support. Note that the dorsal surface 47 may be advantageously positioned just above the foot 46, and to increase the stability (tilting) of the sensor support 41,42.
    [0013] Advantageously all or part of the sensor supports (s) may be sensor supports 41, 42, said multiple, each allowing the support of at least two physically separate sensors. The presence of such multiple sensor supports advantageously makes it possible to densify the position of the sensors on an area of interest. Said sensor supports, said to be multiple, may comprise sensor supports 41 for two sensors, intended to be positioned on either side of said support leg 46. Such an embodiment is illustrated by way of non-limiting example of FIGS. 2 to 4. In such a case, the foot 46 is positioned halfway between the sensors, which are then positioned on either side of the flexible guide 3 on which is secured to said sensor support 41. Such sensor supports ("double") will find particular interest in positioning sensors on areas of the skull having a strong curvature. The so-called multiple sensor supports may comprise sensor supports 42 for four sensors ("quadruple") intended to be distributed around said support foot 46. The four sensors may be positioned at the four corners of a rectangle ( for example a square). Such an embodiment is illustrated by way of non-limiting example of FIGS. 7 to 8. Such an embodiment is particularly interesting in that it makes it possible to group together four sensors, in close proximity, over the same area of skull interest. however, it needs to be applied to a relatively flat skull zone. Thus and as illustrated in Figure 1, the sensor supports ("double") and the sensor supports ("quadruple") can be combined on the structure. It will be understood that FIG. 1 is a partial figure in that it illustrates only a few sensor supports, the others not being illustrated, for the sake of clarity, in order to show the structure, and in particular the According to an advantageous embodiment, each sensor is designed to be slidably mounted relative to the part of the sensor support equipped with the support foot 46, a spring element 48, such as a spring compression, being configured to constrain the sensor toward and towards the head of the wearer. Advantageously, such an embodiment makes it possible to ensure that the or each sensor is well positioned in bearing on the head of the individual, while controlling the pressure force of said sensor on the head.
    [0014] For this purpose, the spring element 48, in particular the compression spring is chosen so that the return force is sufficient to press the sensor on the head, but of sufficiently low stiffness so that this effort is not necessary. painful. In the case of a multiple sensor support, each sensor is movable relative to the portion of the support equipped with the foot 46 and independently from the other sensors.
    [0015] Each sensor has an independent spring element 48. As not shown in FIG. 4 (right), the sensor stroke is such that, at the end of the high stroke, it rises substantially above the level of the foot support 46. In other words, when the sensor is at the level corresponding to the bearing surface of the foot, as shown in but not limited to FIG. 4 (left), or in the vicinity of the latter, the force of the sensor on the head is limited by the choice of the spring element 48, and in particular the choice of its stiffness, and its compression ratio at this position (the prestressing). By way of non-limiting example, the spring element 48 may have a stiffness of 40 N / m, the prestress defined at 0.25 N when the lower end of the sensor is at the same level as the bearing surface of the foot 46. The structure of the device 10 allows a distribution of the charges decreasing the punctuated pressure zones. According to one embodiment, said portion of the sensor support (s) equipped with said support foot 46 being called fixed part 49; 50, said sensor support (s) 4i; 42 comprises, for the or each sensor, a movable portion 51, 52; 53, 54, 55, 56 relative to said fixed portion integral with said sensor, said spring member 48 being provided between said fixed portion and said movable portion of said sensor support. For this purpose and according to an illustrated embodiment, said fixed part 49; 50 comprises, for the or each sensor, a hollow configuration, in particular cylindrical, inside which is intended to slide said movable part. Said moving part of the sensor support (s) has a lower end end for the attachment of a sensor, and a guide surface, in particular cylindrical, for sliding along the inner wall of the hollow conformation. As illustrated in FIGS. 5 and 6a and 6b in particular, the movable portion 51 or 52 of the sensor support may be specific to a particular type of sensor, thereby acting as an adapter. The device may thus comprise a set of moving parts, respectively constituting different adapters for mounting different physically distinct sensors such as electrodes, or the transmitter or the detector of an optode. For example, the mobile part of the support illustrated in FIG. 5 is an adapter allowing the attachment of an electrode, whereas the moving parts of FIG. 6a and FIG. 6b respectively allow the mounting of the emitting and detecting portion of an electrode. an optode.
    [0016] According to one embodiment, said movable portion has a projecting portion extending through an upper opening of the hollow conformation, a locking member 57, such as a pin, being removably mounted on the portion protruding, so as, on the one hand, ensure the maintenance and locking of said movable portion 51,52; 53, 54, 55, 56 at said fixed portion 49; 50, said sensor support (s) 4i; 42, and secondly, allow, once the locking member removed, removal and disassembly of the movable portion 51,52; 53, 54, 55, 56 with respect to said fixed portion 49; 50. The assembly and disassembly of the locking member 57 is preferably carried out without tools.
    [0017] The locking member 57 may advantageously take the form of a loop, intended for gripping, and for moving the sensor away from the surface of the head when a pulling force is applied to the loop. The loop is an elastically deformable element, for example metal having two free ends intended to be inserted into two corresponding holes of the projecting portion.
    [0018] As illustrated in FIG. 4, on the left this locking member 57, once mounted, abuts with the fixed part, at the end of the low stroke, preventing the removal of the moving part from the hollow conformation of the part fixed. The withdrawal of the loop is performed by deforming the loop and so as to leave the free ends of the orifices. Once the loop is removed, the moving part can be extracted from the hollow conformation.
    [0019] The fixed part body of the sensor may be a plastic part, in particular injection molded, the foot constituted by an elastomer element attached to the body. Similarly, each movable portion 51,52; 53, 54, 55, 56 may be a plastic element, especially injection molded. Said central support 2 may have, along the length direction, a plurality of transverse passages 20, in particular in the form of grooves, mutually spaced along the length of said central support for the positioning and the respective holdings of a plurality of flexible guides 3, according to different spacing positions defined between said flexible guides. Said central support 2, may have a longitudinal channel 2 in the direction of the length, function of cable guide, for guiding the wire links of the various sensors. The central support 2 may be an elastomer element which comprises a central band whose lower surface is intended to bear on the head, and the upper surface is provided with said transverse passages, in over-depth and in the form of grooves, respectively distributed along the band.
    [0020] Said central support may have raised edges 22, 23, in a discontinuous manner, between the grooves, along the two longitudinal edges of the strip and forming, with said central strip, said longitudinal channel 21. The central support 2 may be an elastomeric material, and in particular obtained by molding. This channel 21 makes it possible to guide the wired links of the sensors in the direction of a box 10 receiving an electronics for acquiring the signals from the sensors, said box being integral with the structure, positioned in the rear part of the head. This box internally receives an electronic acquisition of measurement signals, in particular near-infrared spectroscopy signals and / or electroencephalographic signals. In the case of the implementation of a near infrared spectroscopy, the device may further comprise a cap (not shown), removable, in a blackout material intended to be applied to the sensor support structure of the device. , and in such a way as to isolate the sensors (in particular the optodes) from the light interferences of the ambient environment. Such a cap advantageously allows the wearer to proceed to NIRS measurements, in compliance with the recording conditions (that is to say in the dark), and without the need to plunge the wearer in the dark. The cap may be in a blackout fabric, light and so as not to press the sensor supports (s), and present a tightening link and / or elastic, around its periphery in order to adjust the cap to different sizes of head.
    [0021] 3028743 18 NOMENCLATURE 1. Device, 2. Central support, 3. Flexible guides, 5 4i, 42. Sensor supports (two-sensor or four-sensor, respectively), 5. Elastics, 6. Armatures, 7. Through openings (Armatures 6), 10 20. Transverse passages (Central support 2), 21. Longitudinal channel (Central support 2), 22,23. Raised edges (Central support 2). 40, 41. Loops (Sensor supports 4i), 42, 43, 44, 45. Loops (Sensor supports 42), 46. Feet (Sensor support 41 or 42), 47. Dorsal surface 48. Spring element (for example compression spring), 49. Fixed part (sensor supports 4i), 50. Fixed part (sensor supports 42), 51,52. Moving parts (sensor supports 4i), 53, 54, 55, 56. Moving parts (sensor supports 42), 3028743 19 57. Locking member (especially gripping loop), 60. Housing (acquisition electronics), 61. Chinrest. 5
    权利要求:
    Claims (25)
    [0001]
    REVENDICATIONS1. Device (1) suitable for measuring signals of the brain activity of an individual, intended to be affixed to the head of said individual having a structure (2) for the port of sensors, said structure allowing adjustment of the position of the sensors, characterized in that said structure of the device comprising: - a central support (2), deformable, adapted to adapt to the head curvature, intended to be positioned along the head, preferably along the median plane of the skull, - flexible guides (3), extending laterally from said central support, spaced apart from each other - sensor supports (4i, 42), secured to and fixed to said flexible guides (3), of adjustable positions along the flexible guides (3), - a system (5, 6) for tensioning said flexible guides.
    [0002]
    2. Device according to claim 1, wherein said system for tensioning said flexible guides comprises, on the one hand, on each side of the wearer's head, a rigid armature (6) intended to extend to the less locally under the ear, the two armatures being preferably connected by a chin strap, and secondly, elastics (5), each secured by one of its ends to the lower end of the corresponding one said flexible guides (3), each elastic (5) being intended to be fixed to said frame (6) to ensure the tensioning of the corresponding flexible guide (3).
    [0003]
    3. Device according to claim 2, wherein said tensioning system comprises a means for adjusting the tension of the elastic.
    [0004]
    4. Device according to claim 3, wherein the means for adjusting the elastic tension comprises a passage opening (7) of the armature for the elastic (5), said passage opening (7) being dimensioned lower than the section of the elastic (5), and such that: - 3028743 21 - a manual tensile force on the free end of the elastic (5) allows the sliding of the elastic through said passage opening (7), and thus an adjustment by increasing the tension, and when the manual force is no longer, - the friction between the passage opening (7) and the elastic (5) are such they prohibit slipping, ensuring the tensioning of the corresponding flexible guide.
    [0005]
    5. Device according to one of claims 1 to 4 wherein the flexible guides (3) are in an inelastic material.
    [0006]
    6. Device according to claim 5, wherein the flexible guides (3) are in a textile. 10
    [0007]
    7. Device according to one of claims 1 to 6, wherein said flexible guides (3) are strips.
    [0008]
    8. Device according to one of claims 1 to 7, wherein said sensor supports (4i, 42) are adjustable positions along the flexible guides (3), said sensor supports (4i, 42) having loops (40, 41, 42, 44, 43, 45) for the flexible guides allowing such a positional adjustment.
    [0009]
    9. Device according to claim 8, wherein, once the manual adjustment operation is performed, the holding of the sensor support on the flexible guide is ensured by the friction between the flexible guide (3) and the sensor support. (41,42).
    [0010]
    10. Device according to one of claims 1 to 9, wherein said sensor supports each comprise a portion having a foot (46), in particular elastomer, intended to press on the head of the wearer.
    [0011]
    11. Device according to claim 8 or 9 and 10, wherein said portion of said sensor support (s) having the support foot (46) comprises two so-called loops (40,41; 42,44; 43,45), positioned respectively on either side of said foot (46), both traversed by one of the flexible guides (3), as well as a dorsal surface (47) on which supports the length section of said intermediate flexible guide between the two passers-by (40,41; 42,44; 43,45). 3028743 22
    [0012]
    12. Device according to one of claims 1 to 11, wherein all or part of the sensor supports (s) are sensor supports (4i, 42), said multiple, each allowing the support of at least two sensors physically. distinct.
    [0013]
    13. Device according to claims 10 or 11 and 12, wherein said so-called multiple sensor supports comprise sensor supports (4i) for two sensors, intended to be positioned on either side of said foot (46). support.
    [0014]
    14. Device according to claims 10 or 11 and 12 or 13, wherein said sensor holders, said multiple, comprise sensor supports (42) for four sensors, intended to be distributed around said support foot (46). 10
    [0015]
    15. Device according to claim 10 alone or taken in combination with any one of claims 1 to 9, and 11 to 14, wherein each sensor is intended to be slidably mounted relative to the portion of the sensor support equipped of the support foot (46), a spring element (48), such as a compression spring, being configured to constrain the sensor toward and towards the head of the wearer. 15
    [0016]
    16. Device according to claim 15, wherein said portion of the sensor support (s) equipped with said support foot (46) being called fixed part (49; 50), said sensor support (41; 42) comprises, for the or each sensor, a movable portion (51,52; 53,54; 55,56) relative to said fixed portion integral with said sensor, said spring element (48) being provided between said fixed portion and said movable portion; said sensor support (s).
    [0017]
    17. Device according to claim 16, in which said fixed part (49; 50) comprises, for the or each sensor, a hollow, in particular cylindrical, configuration inside which is intended to slide said movable part and in which said movable portion of the sensor support (s) has a terminal end for attaching a sensor, and a guide surface for sliding along the inner wall of the hollow conformation.
    [0018]
    The device of claim 17, wherein said movable portion has a projecting portion extending through an upper opening of the hollow conformation, a locking member (57), such as a pin, being mounted Detachable on the projecting part, so as, on the one hand, to maintain and lock said movable part (51,52; 53,54,55,56) to said fixed part (49; 50); of said sensor support (4), and secondly, to allow, once the locking member has been removed, the removal and disassembly of the movable part (51,52; 53,54,55; 56) relative to said fixed portion (49; 50).
    [0019]
    19. Device according to claim 18, wherein the locking member (57) takes the form of a loop for gripping, and to move the sensor from the surface of the head when a traction force is performed on the loop.
    [0020]
    20. Device according to one of claims 1 to 19, wherein said central support (2) has, in the direction of the length, a plurality of passages (20), transverse, mutually spaced along the length of said central support for the respective positioning and holding of a plurality of flexible guides (3), according to different spacing positions defined between said flexible guides.
    [0021]
    21. Device according to one of claims 1 to 20, wherein said central support (2), 15 in the direction of the length, a longitudinal channel (21), function of cable guide, for guiding the wired links of the different sensors.
    [0022]
    22. Device according to one of claims 1 to 21, comprising a housing receiving an electronics acquisition signals of the sensors.
    [0023]
    23. Device according to one of claims 1 to 22, wherein the sensors comprise electrodes for the measurement of signals by electroencephalography and / or optical detectors and emitters for the measurement of signals by spectroscopy in the near infrared.
    [0024]
    24. Device according to one of claims 1 to 23 comprising a removable cap, in a blackout material, intended to be applied to the sensor support structure of the device, and so as to isolate the sensors from light interference from the environment. ambient.
    [0025]
    25. Use of a device according to claim 23 equipped with sensors comprising said electrodes for measuring signals by electroencephalography and said detectors and optical transmitters for the measurement of signals by spectroscopy in the near infrared, for the simultaneous measurement of said signals. signals by electroencephalography and near infrared spectroscopy.
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    同族专利:
    公开号 | 公开日
    CA2966689A1|2016-05-26|
    ES2774795T3|2020-07-22|
    US20170367650A1|2017-12-28|
    BR112017010538A2|2018-04-03|
    WO2016079436A1|2016-05-26|
    CN107106068A|2017-08-29|
    CN107106068B|2020-04-21|
    EP3220803A1|2017-09-27|
    EP3220803B1|2019-12-04|
    FR3028743B1|2021-02-19|
    JP2018501047A|2018-01-18|
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    法律状态:
    2015-11-30| PLFP| Fee payment|Year of fee payment: 2 |
    2016-05-27| PLSC| Search report ready|Effective date: 20160527 |
    2016-11-30| PLFP| Fee payment|Year of fee payment: 3 |
    2017-11-30| PLFP| Fee payment|Year of fee payment: 4 |
    2018-11-29| PLFP| Fee payment|Year of fee payment: 5 |
    2019-11-29| PLFP| Fee payment|Year of fee payment: 6 |
    2021-08-06| ST| Notification of lapse|Effective date: 20210705 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1461283A|FR3028743B1|2014-11-21|2014-11-21|DEVICE FOR MEASURING SIGNALS OF THE BRAIN ACTIVITY OF AN INDIVIDUAL|FR1461283A| FR3028743B1|2014-11-21|2014-11-21|DEVICE FOR MEASURING SIGNALS OF THE BRAIN ACTIVITY OF AN INDIVIDUAL|
    US15/528,222| US11272880B2|2014-11-21|2015-11-19|Device for measuring the brain activity signals of an individual|
    CN201580065475.1A| CN107106068B|2014-11-21|2015-11-19|Device for measuring brain activity signals of an individual|
    CA2966689A| CA2966689A1|2014-11-21|2015-11-19|Device for measuring the brain activity signals of an individual|
    EP15804902.3A| EP3220803B1|2014-11-21|2015-11-19|Device for measuring the brain activity signals of an individual|
    BR112017010538-1A| BR112017010538A2|2014-11-21|2015-11-19|device for measuring the signals of an individual's brain activity|
    PCT/FR2015/053132| WO2016079436A1|2014-11-21|2015-11-19|Device for measuring the brain activity signals of an individual|
    JP2017546049A| JP2018501047A|2014-11-21|2015-11-19|Device for measuring an individual's brain activity signal|
    ES15804902T| ES2774795T3|2014-11-21|2015-11-19|Device for measuring signals of the brain activity of an individual|
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