阅读说明：本技术 一种通过直流电刺激改善儿童智力的装置 (Device for improving intelligence of children through direct current stimulation ) 是由 周东升 黎兴兴 刘晓丽 张文武 禹海航 于 2020-12-29 设计创作，主要内容包括：本发明提供了一种通过直流电刺激改善儿童智力的装置,属于医学设备的技术领域。一种通过直流电刺激改善儿童智力的装置包括旋转器、支架、连接带、控制器、阴极片以及阳极片；本发明通过在旋转器的转轴上的两导电管外套设有若干弧形的支架,使得支架可通过旋转器展开或关闭,方便了收纳,便携性更高,且弧形的支架与对应的导电管之间设置有弹性触片,通过弹性触片和导电管实现控制器和阴极片、阳极片的电连接,另外,每一支架上均开设有可选择性安装阳极片或阴极片的嵌槽,实现了刺激点数量的拓展,并且可通过控制支架在旋转器上的转动角度以及连接带两端连接的状态来实现对支架展开后围成的空间大小的控制,从而适应不同的使用者,提高了适应性。(The invention provides a device for improving intelligence of children through direct current stimulation, and belongs to the technical field of medical equipment. A device for improving children intelligence by DC stimulation comprises a rotator, a bracket, a connecting belt, a controller, a cathode sheet and an anode sheet; the invention has the advantages that the arc-shaped brackets are sleeved outside the two conductive tubes on the rotating shaft of the rotator, so that the brackets can be unfolded or closed through the rotator, the storage is convenient, the portability is higher, the elastic contact piece is arranged between the arc-shaped brackets and the corresponding conductive tubes, the electric connection between the controller and the cathode sheet and the anode sheet is realized through the elastic contact piece and the conductive tubes, in addition, each bracket is provided with the caulking groove for selectively installing the anode sheet or the cathode sheet, the expansion of the number of stimulation points is realized, the control of the size of a space enclosed after the brackets are unfolded can be realized by controlling the rotating angle of the brackets on the rotator and the connection state of the two ends of the connecting band, thereby adapting to different users and improving the adaptability.)

1. The utility model provides a device for improving children's intelligence through direct current stimulation, includes the controller, the electricity connect the negative pole piece and the positive pole piece of controller and for the power supply who provides operating voltage is to the controller, its characterized in that: the electric energy meter is characterized by further comprising a rotator, a plurality of supports and a connecting belt, wherein the rotator is provided with a rotating shaft, two conductive tubes are sleeved outside the rotating shaft in parallel, the two conductive tubes are respectively and electrically connected to two output electrodes of the controller, an insulating sleeve is arranged between the two conductive tubes, each support is arranged in an arc shape, the plurality of supports are divided into two groups, one ends of the two groups of supports are respectively sleeved outside the two conductive tubes, each support is provided with an elastic contact piece, one end of the elastic contact piece abuts against the corresponding conductive tube, the two ends of the connecting belt are detachably connected to form an annular structure, one end, which deviates from the conductive tube, of each support is connected to the connecting belt, an embedding groove is formed in each support and is positioned close to the arc-shaped inner side of the support, and a conductive contact corresponding to the elastic contact piece on the support is arranged in each embedding groove, the cathode sheet or the anode sheet contacting the conductive contact may be selectively embedded in the insertion groove.

2. The device for improving the intelligence of a child by direct current stimulation according to claim 1, wherein: the rotator is provided with a main support frame which extends out, the main support frame and the brackets have the same shape, meanwhile, the main support frame is positioned between the two groups of brackets, and one end of the main support frame, which is far away from the rotator and is connected with the connecting belt, is also connected with the connecting belt.

3. The device for improving the intelligence of a child by direct current stimulation according to claim 1, wherein: one end of each elastic contact piece is hinged to the corresponding support, the non-hinged end of each elastic contact piece is abutted against the corresponding conductive tube, and the arrangement direction of each elastic contact piece and the radial direction of each conductive tube form an included angle.

4. The device for improving the intelligence of a child through direct current stimulation according to claim 3, wherein: the support is characterized by further comprising a propping block and a propping spring, wherein the propping block is arranged on the support and positioned on one side of the elastic contact piece, the propping spring is positioned between the propping block and the elastic contact piece, and two ends of the propping spring are respectively propped on the propping block and the elastic contact piece.

5. The device for improving the intelligence of a child by direct current stimulation according to claim 1, wherein: at least two conductive contacts are arranged in each caulking groove, and the conductive contacts in the same caulking groove are distributed.

6. The device for improving the intelligence of a child by direct current stimulation according to claim 1, wherein: the two ends of the connecting belt are in clamping connection; one end of the connecting band is provided with a plurality of clamping holes, the other end of the connecting band is provided with a plurality of clamping blocks corresponding to the clamping holes, and when the two ends of the connecting band are connected, the clamping blocks are clamped into the corresponding clamping holes; the number of the clamping holes is larger than that of the clamping blocks.

7. The device for improving the intelligence of a child by direct current stimulation according to claim 1, wherein: the rotator is provided with an installation cavity, the controller is arranged in the installation cavity, the power supply is a rechargeable power supply, the rechargeable power supply is arranged in the installation cavity, a charging hole communicated with the outside is formed in the wall of the installation cavity, and a charging head is arranged in the charging hole.

8. The device for improving the intelligence of a child by direct current stimulation according to claim 1, wherein: the controller internal circuit comprises a direct current stimulation signal generation circuit, a digital-to-analog conversion circuit, a current regulation and control circuit and a current output circuit, wherein the output end of the direct current stimulation signal generation circuit is connected with the input end of the digital-to-analog conversion circuit, the output end of the digital-to-analog conversion circuit is connected with the input end of the current regulation and control circuit, the output end of the current regulation and control circuit is connected with the input end of the current output circuit, and the current output circuit outputs direct current to the cathode sheet or the anode sheet.

9. The device for improving the intelligence of a child by direct current stimulation according to claim 1, wherein: the direct current stimulation signal generating circuit comprises a single chip microcomputer U1 with the model number of AT89C51, and a twenty-second pin and a twenty-third pin of the single chip microcomputer U1 are respectively used as a first output end and a second output end of the direct current stimulation signal generating circuit;

the digital-to-analog conversion circuit comprises a chip U3 with the model of MCP4725, a first pin of the chip U3 serves as an output end of the digital-to-analog conversion circuit, a second pin and a sixth pin of the chip U3 are grounded after being in short circuit, and a third pin of the chip U3 is connected with a twenty-second pin of the single-chip microcomputer U1; the fourth pin of the chip U3 is connected with the twenty-third pin of the singlechip U1, and the fifth pin of the chip U3 is externally connected with the working voltage of the chip.

10. The transcranial direct current stimulation device according to claim 9, wherein: the current regulation and control circuit comprises a resistor R1, a variable resistor RV1, a resistor R2, a variable resistor RV2, a resistor R3, a resistor R4, a resistor R6 and an operational amplifier U4, wherein one end of the resistor R1 is connected with a first pin of the chip U3, the other end of the resistor R1 is simultaneously connected with one fixed end of the variable resistor RV1 and one end of the resistor R4, and the other fixed end of the variable resistor RV1 is connected with the variable resistor end and then grounded; the other end of the resistor R4 is connected with the positive input end of an operational amplifier U4; the inverting input end of the operational amplifier U4 is grounded;

one end of the resistor R2 is externally connected with a 5V working voltage, the other end of the resistor R2 is simultaneously connected with one fixed end of the variable resistor RV2 and one end of the resistor R3, and the other fixed end of the variable resistor RV2 is connected with the variable resistor end thereof and then grounded; the other end of the resistor R3 is respectively connected with one end of the resistor R6 and the positive input end of the operational amplifier U4, and the other end of the resistor R6 is connected with the output end of the operational amplifier U4;

the current regulation and control circuit further comprises a resistor R5, a resistor R7, an operational amplifier U8, a resistor R8, a triode Q1, a diode D1, a capacitor C3, a capacitor C6, a rectifier bridge BR1 and a resistor R9, wherein one end of the resistor 5 is connected with the output end of the operational amplifier U4, the other end of the resistor is connected with the reverse input end of the operational amplifier U8, and the forward input end of the operational amplifier U8 is grounded;

two ends of the resistor R7 are connected between the inverting input end and the output end of the operational amplifier U8;

the output end of the operational amplifier U8 is connected with the eighth pin of a current output chip U9; the positive input end of the operational amplifier U8 is connected to the thirteenth pin of the current output chip U9 after being connected to the capacitor C3; the positive input end of the operational amplifier U8 is also connected with the first input end A of the rectifier bridge BR1, and the positive input end of the operational amplifier U8 is also connected with the second input end B of the rectifier bridge BR1 after being connected with the capacitor C6; a first output end C of the rectifier bridge BR1 is connected with a ninth pin of the current output chip U9; a second output end D of the rectifier bridge BR1 is connected in series with the resistor R9 and then connected to a ninth pin of the current output chip U9;

the collector of the triode Q1 is connected with the fourth pin of the current output chip U9, and the emitter of the triode Q1 is connected with the fifth pin of the current output chip U9; the resistor R8 is connected between the collector and the base of the triode Q1, and the diode D1 in the forward direction is connected between the base and the emitter of the triode Q1;

a third pin and a sixth pin of the current output chip U9 are respectively used as a first output pin and a second output pin of a current signal of the chip;

the current output circuit comprises the current output chip U9, a capacitor C4 and a resistor R10, a third pin of the current output chip U9 is connected with a sixth pin of the current output chip U9 after being sequentially connected with the capacitor C4 and the resistor R10, a cross point K of the capacitor C4 and the resistor R10 is connected with an output end of a switch circuit, and an output end of the switch circuit is electrically connected with the cathode sheet or the anode sheet.

Technical Field

The invention relates to the technical field of medical equipment, in particular to a device for improving intelligence of children through direct current stimulation.

Background

With the development of science and technology, stimulation of cerebral cortical neurons is realized clinically by using constant and low-intensity direct current, and the application of treating diseases such as depression, epilepsy, stroke and the like is more and more extensive.

At present, although the transcranial direct current stimulation device on the market can stimulate cortical neurons of the brain, the device is poor in convenience and inconvenient to carry due to overlarge volume and operation process, and the conventional transcranial direct current stimulation device has the problem of inconvenience in use for people with light diseases and capable of living normally. In addition, the existing transcranial direct current stimulation device has poor expansibility due to fixed structure, and has the problem of mismatching with a user, so that the adaptability is poor.

Disclosure of Invention

In view of the above problems in the prior art, it is now desirable to provide a device for improving the intelligence of children by means of direct current stimulation, a plurality of brackets are arranged, and one ends of the brackets are connected through the rotator, so that the brackets can be unfolded or tightened through the rotator, the storage is convenient, the portability is higher, in addition, the rotator is electrically connected with a controller, each bracket is connected with the rotator through an elastic contact piece, so that each bracket can realize circuit conduction, meanwhile, each bracket is provided with an embedded hole for mounting an electrode, one or more anode sheets and cathode sheets can be selected to be mounted in different embedded holes, thereby realizing the expansion of the number of stimulation points, meanwhile, the size of the expansion space can be controlled by controlling the rotation angle of the bracket on the rotator and the connection state of the two ends of the connecting band, so that the device is suitable for different users, and the adaptability is improved.

In order to solve the technical problems, the device for improving the intelligence of children through direct current stimulation comprises a controller, a cathode sheet and an anode sheet which are electrically connected with the controller, and a power supply which provides working voltage for the controller, and is characterized by further comprising a rotator, a plurality of supports and a connecting belt, wherein the rotator is provided with a rotating shaft, two conductive tubes are sleeved outside the rotating shaft in parallel, the two conductive tubes are respectively and electrically connected to two output electrodes of the controller, an insulating sleeve is arranged between the two conductive tubes, each support is arranged in an arc shape, the plurality of supports are divided into two groups, one ends of the two groups of supports are respectively sleeved outside the two conductive tubes, an elastic contact piece is arranged on each support, one end of each support abuts against the corresponding conductive tube, and two ends of the connecting belt are detachably connected and form an annular structure, the end, which is deviated from the conductive tube and sleeved outside the conductive tube, of each support is connected to the connecting band, an embedded groove is formed in each support and located close to the arc-shaped inner side of the support, a conductive contact electrically connected to the elastic contact piece corresponding to the support is arranged in each embedded groove, and the cathode piece or the anode piece in contact with the conductive contact piece can be selectively embedded in each embedded groove.

Preferably, the rotator is provided with a main support frame extending out, the main support frame is in the same shape as the brackets, meanwhile, the main support frame is positioned between the two groups of brackets, and one end of the main support frame, which is far away from the end connected with the rotator, is also connected with the connecting belt.

Preferably, one end of each elastic contact piece is hinged to the corresponding support, the non-hinged end of each elastic contact piece abuts against the corresponding conductive tube, and the arrangement direction of each elastic contact piece and the radial direction of each conductive tube form an included angle.

Preferably, the device for improving the intelligence of the child through direct current stimulation further comprises a resisting block and a resisting spring, the resisting block is arranged on the support and located on one side of the elastic contact piece, the resisting spring is located between the resisting block and the elastic contact piece, and two ends of the resisting spring are respectively tightly resisted on the resisting block and the elastic contact piece.

Preferably, at least two conductive contacts are arranged in each caulking groove, and the conductive contacts in the same caulking groove are distributed.

Preferably, the two ends of the connecting band are in clamping connection; one end of the connecting band is provided with a plurality of clamping holes, the other end of the connecting band is provided with a plurality of clamping blocks corresponding to the clamping holes, and when the two ends of the connecting band are connected, the clamping blocks are clamped into the corresponding clamping holes; the number of the clamping holes is larger than that of the clamping blocks.

Preferably, the rotator is provided with an installation cavity, the controller is arranged in the installation cavity, the power supply is a rechargeable power supply, the rechargeable power supply is arranged in the installation cavity, a charging hole communicated with the outside is formed in the wall of the installation cavity, and a charging head is arranged in the charging hole.

Preferably, the internal circuit of the controller includes a direct current stimulation signal generation circuit, a digital-to-analog conversion circuit, a current regulation and control circuit and a current output circuit, an output end of the direct current stimulation signal generation circuit is connected to an input end of the digital-to-analog conversion circuit, an output end of the digital-to-analog conversion circuit is connected to an input end of the current regulation and control circuit, an output end of the current regulation and control circuit is connected to an input end of the current output circuit, and the current output circuit outputs direct current to the cathode strip or the anode strip.

Preferably, the direct-current stimulation signal generating circuit comprises a single-chip microcomputer U1 with the model number of AT89C51, and a twenty-second pin and a twenty-third pin of the single-chip microcomputer U1 are respectively used as a first output end and a second output end of the direct-current stimulation signal generating circuit; the digital-to-analog conversion circuit comprises a chip U3 with the model of MCP4725, a first pin of the chip U3 serves as an output end of the digital-to-analog conversion circuit, a second pin and a sixth pin of the chip U3 are grounded after being in short circuit, and a third pin of the chip U3 is connected with a twenty-second pin of the single-chip microcomputer U1; the fourth pin of the chip U3 is connected with the twenty-third pin of the singlechip U1, and the fifth pin of the chip U3 is externally connected with the working voltage of the chip.

Preferably, the current regulation and control circuit comprises a resistor R1, a variable resistor RV1, a resistor R2, a variable resistor RV2, a resistor R3, a resistor R4, a resistor R6, and an operational amplifier U4, wherein one end of the resistor R1 is connected to a first pin of the chip U3, the other end of the resistor R1 is simultaneously connected to a fixed end of the variable resistor RV1 and one end of the resistor R4, and the other fixed end of the variable resistor RV1 is connected to the variable resistor end and then grounded; the other end of the resistor R4 is connected with the positive input end of an operational amplifier U4; the inverting input end of the operational amplifier U4 is grounded; one end of the resistor R2 is externally connected with a 5V working voltage, the other end of the resistor R2 is simultaneously connected with one fixed end of the variable resistor RV2 and one end of the resistor R3, and the other fixed end of the variable resistor RV2 is connected with the variable resistor end thereof and then grounded; the other end of the resistor R3 is respectively connected with one end of the resistor R6 and the positive input end of the operational amplifier U4, and the other end of the resistor R6 is connected with the output end of the operational amplifier U4; the current regulation and control circuit further comprises a resistor R5, a resistor R7, an operational amplifier U8, a resistor R8, a triode Q1, a diode D1, a capacitor C3, a capacitor C6, a rectifier bridge BR1 and a resistor R9, wherein one end of the resistor 5 is connected with the output end of the operational amplifier U4, the other end of the resistor is connected with the reverse input end of the operational amplifier U8, and the forward input end of the operational amplifier U8 is grounded; two ends of the resistor R7 are connected between the inverting input end and the output end of the operational amplifier U8; the output end of the operational amplifier U8 is connected with the eighth pin of a current output chip U9; the positive input end of the operational amplifier U8 is connected to the thirteenth pin of the current output chip U9 after being connected to the capacitor C3; the positive input end of the operational amplifier U8 is also connected with the first input end A of the rectifier bridge BR1, and the positive input end of the operational amplifier U8 is also connected with the second input end B of the rectifier bridge BR1 after being connected with the capacitor C6; a first output end C of the rectifier bridge BR1 is connected with a ninth pin of the current output chip U9; a second output end D of the rectifier bridge BR1 is connected in series with the resistor R9 and then connected to a ninth pin of the current output chip U9; the collector of the triode Q1 is connected with the fourth pin of the current output chip U9, and the emitter of the triode Q1 is connected with the fifth pin of the current output chip U9; the resistor R8 is connected between the collector and the base of the triode Q1, and the diode D1 in the forward direction is connected between the base and the emitter of the triode Q1; a third pin and a sixth pin of the current output chip U9 are respectively used as a first output pin and a second output pin of a current signal of the chip; the current output circuit comprises the current output chip U9, a capacitor C4 and a resistor R10, a third pin of the current output chip U9 is connected with a sixth pin of the current output chip U9 after being sequentially connected with the capacitor C4 and the resistor R10, a cross point K of the capacitor C4 and the resistor R10 is connected with an output end of a switch circuit, and an output end of the switch circuit is electrically connected with the cathode sheet or the anode sheet.

Compared with the prior art, the portable rotating device has the advantages that the arc-shaped supports are sleeved outside the two conductive tubes on the rotating shaft of the rotator, so that the supports can be unfolded or tightened by the rotator, the storage is convenient, the portability is higher, the elastic contact pieces are arranged between the arc-shaped supports and the corresponding conductive tubes, in addition, each support is provided with the caulking groove, and meanwhile, the anode pieces or the cathode pieces can be selectively installed in the caulking grooves, so that the expansion of the number of stimulation points is realized, meanwhile, the control of the size of a space enclosed after the supports are unfolded can be realized by controlling the rotating angle of the supports on the rotator and the connection state of the two ends of the connecting band, different users are adapted, and the adaptability is improved.

Drawings

FIG. 1 is a block diagram of an embodiment of the device for improving the intelligence of a child by DC stimulation according to the present invention;

FIG. 2 is a view of the stent of a preferred embodiment of the present invention after deployment;

FIG. 3 is a view of the installation of the elastic contact blade according to a preferred embodiment of the present invention;

FIG. 4 is a view showing the structure of the caulking groove of the bracket according to a preferred embodiment of the present invention;

FIG. 5 is a schematic diagram of the internal circuit structure of the controller according to a preferred embodiment of the present invention;

in the drawings: 1. a rotator; 11. a conductive tube; 12. an insulating sleeve; 13. a main supporting frame; 14. a mounting cavity; 15. a rotating shaft; 141. a rechargeable power supply; 142. a charging head; 2. a support; 21. an elastic contact piece; 22. caulking grooves; 211. a propping block; 212. the spring is tightly propped; 221. a conductive contact; 3. a connecting belt; 31. a clamping block; 4. a cathode sheet; 5. an anode sheet; 6. and a controller.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

As shown in fig. 1 and fig. 2, the device for improving the intelligence of a child through direct current stimulation provided by this embodiment includes: the device comprises a controller 6, a cathode sheet 4, an anode sheet 5, a rotator 1, a bracket 2, a connecting belt 3 and a power supply for supplying working voltage to the controller.

Specifically, as shown in fig. 3, a rotating shaft 15 extending out is disposed on the rotator 1 (the rotator can be rotated manually or electrically), and meanwhile, two conductive tubes 11 are sleeved outside the rotating shaft 15 in parallel along the axial direction of the rotating shaft 15, and the two conductive tubes 11 are electrically connected to two output electrodes of the controller 6 respectively, so that the current output by the controller 6 can be transmitted to the two conductive tubes 11 respectively, thereby providing conditions for subsequently transmitting the current to the cathode strip 4 or the anode strip 5 on the support 2 through the conductive tubes 11. And, an insulating sleeve 12 is provided between the two conductive tubes 11, and the two conductive tubes 11 are separated by the insulating sleeve 12, thereby preventing the problem of interference or short circuit between the conductive tubes 11. Simultaneously, all be the arc setting with each support 2, the better shape that accords with patient's head for support 2 can laminate patient's head, guarantees the result of use. And, divide into two sets ofly with a plurality of supports 2, at this moment, two sets of supports 2's one end is overlapped respectively and is located outside two electric conduction tubes 11, and two sets of supports 2 rotate outside the electric conduction tube 11 that corresponds respectively promptly to realize the expansion or tighten up of support 2, when support 2 is in the expansion state, a accommodation space is enclosed into to a plurality of supports 2, makes things convenient for the cover to locate on patient's head, and when support 2 is in the tightening up state, a plurality of supports 2 range upon each other, and occupation space is little, does benefit to and accomodates. And, all be provided with one end on each support 2 and lean on the elastic contact 21 on corresponding contact tube 11, realize the electricity through elastic contact 21 and contact tube 11 between support 2 and the circulator 1 promptly and be connected to elastic contact 21 can guarantee that support 2 is its contact with contact tube 11 all the time at the pivoted in-process, has guaranteed the reliability of electricity connection. In addition, can dismantle the connection with the both ends of connecting band 3 and form ring structure, whether the state when connecting and the connection through the both ends of connecting band 3 adjusts the size of the space that connecting band 3 encloses promptly to provide the condition for follow-up different patients of adaptation, the adaptability is better. At this moment, each support 2 deviates from the cover and locates the outer one end of electric conduction tube 11 and all connect on connecting band 3, and the one end that each support 2 deviates from electric conduction tube 11 promptly passes through connecting band 3 and connects, has guaranteed the stability of structure, also restricts the turned angle of support 2 through connecting band 3 simultaneously, prevents the excessive pivoted problem of support 2, and the safety guarantee nature is higher. Meanwhile, as shown in fig. 4, each bracket 2 is provided with an embedding groove 22 at the inner side close to the arc shape, and the caulking grooves 22 are all provided with conductive contacts 221 which are electrically connected with the elastic contact pieces 21 on the corresponding bracket 2, so that the current transmitted to the elastic contact piece 21 through the contact tube 11 can be transmitted to the corresponding conductive contact 221, meanwhile, the cathode strip 4 or the anode strip 5 contacting with the conductive contact 221 can be selectively inserted into the insertion groove 22, namely, the current output by the controller 6 is transmitted to the cathode plate 4 or the anode plate 5 through the conductive tube 11, the elastic contact piece 21 and the conductive contact 221, which provides conditions for realizing scalp stimulation, in addition, the cathode strips 4 or the anode strips 5 can be installed by selecting different numbers of the caulking grooves 22, so that the numbers of the cathode strips 4 and the anode strips 5 can be selected, thereby increasing stimulation points, having stronger expansibility and more reasonable structural design.

More specifically, the rotator 1 is provided with a protruding main support frame 13, and the main support frame 13 is configured to have the same shape as the bracket 2, but the size of the main support frame 13 is set to be larger than that of the bracket 2, so that when the bracket 2 is tightened, the bracket 2 can be tightened inside the main support frame 13, that is, the main support frame 13 protects the bracket 2, and the structural design is more reasonable. Meanwhile, the main support frame 13 is arranged between the two groups of brackets 2, that is, the two groups of brackets 2 positioned on the two sides of the main support frame 13 can be respectively tightened from the two sides of the main support frame 13, and the main support frame 13 can provide completely same supporting force for the brackets 2 on the two sides, thereby ensuring the uniformity of structural stress. And one end of the main support frame 13, which is far away from the connecting rotator 1, is also connected to the connecting band 3, so that the connecting band 3 is also connected to the main support frame 13, and one end of the bracket 2, which is connected to the connecting band 3, can also be supported by the main support frame 13, thereby ensuring the stability and reliability of the structure and having higher structural strength.

Fig. 3 is a view showing the installation of the elastic contact according to a preferred embodiment of the present invention. As shown in fig. 1 to 3, one end of the elastic contact piece 21 is hinged on the support 2, so that the elastic contact piece 21 can swing on the support 2, meanwhile, the non-hinged end of the elastic contact piece 21 abuts against the outside of the corresponding conductive tube 11, the connection between the elastic contact piece 21 and the corresponding conductive tube 11 is realized, and the arrangement direction of the elastic contact piece 21 and the radial direction of the conductive tube 11 form an included angle arrangement, namely, the elastic contact piece 21 is arranged along the tangential direction similar to the conductive tube 11, so that the contact area between the elastic contact piece 21 and the conductive tube 11 is increased, the problem of poor contact is avoided, and the structural design is more reasonable.

More specifically, the support 2 is further provided with a resisting block 211 and a resisting spring 212, at this time, the resisting block 211 is arranged on the support 2 and located on one side of the elastic contact piece 21, preferably, the resisting block 211 is arranged on one side of the elastic contact piece 21 inclined towards the conductive tube 11, the resisting spring 212 is located between the resisting block 211 and the elastic contact piece 21, two ends of the resisting spring 212 are respectively and tightly contacted on the resisting block 211 and the elastic contact piece 21, and the resisting spring 212 is in a compression state, so that the resisting spring 212 can provide pressure for the elastic contact piece 21, the elastic contact piece 21 can be more tightly pressed on the corresponding conductive tube 11, the problem of poor contact is further prevented, and the structural design is more reasonable.

FIG. 4 is a diagram of the structure of the caulking groove of the bracket according to a preferred embodiment of the present invention. As shown in fig. 1 and 4, at least two conductive contacts 221 are disposed in each slot 22 disposed on the bracket 2, and a suitable number of conductive contacts 221 are selected according to actual use requirements, and the conductive contacts 221 in the same slot 22 are distributed, so that after the cathode strip 4 or the anode strip 5 is mounted in the slot 22, corresponding conductive contacts 221 are disposed at different positions of the cathode strip 4 or the anode strip 5, thereby preventing the problem that the single conductive contact 221 is not in good contact and cannot be used, and ensuring the use.

More specifically, the two ends of the connecting band 3, which are used for connecting the end of the bracket 2 departing from the rotator 1, are connected in a clamping manner, so that the two ends of the connecting band 3 can be connected and disconnected more conveniently, the device can be sleeved on the head of a patient conveniently, the adjustment of the size of the space enclosed by the bracket 2 is facilitated, and the structural design is more reasonable.

More specifically, a plurality of card holes have been seted up to the one end of connecting band 3, and, the other end of connecting band 3 is provided with a plurality of fixture blocks 31 that correspond with the card hole, and when the both ends of connecting band 3 are connected, fixture block 31 card is gone into in the card hole that corresponds, take out the back from the card hole through fixture block 31 promptly, the both ends of connecting band 3 are separately, make things convenient for packing up of support 2, and go into the card downthehole back at fixture block 31 card, the both ends of connecting band 3 are connected, this moment, connecting band 3 forms loop configuration, make the space that encloses after support 2 expandes can be restricted by connecting band 3, make it can stabilize the cover and locate patient's head, structural. It is worth pointing out that the connecting belt 3 is a flexible belt, so that when the support 2 is folded, the connecting belt 3 can be synchronously bent, the support 2 can be completely folded, and the structural design is more reasonable.

More specifically, the number of the card hole on the connecting band 3 is greater than the number of fixture block 31, and fixture block 31 can select different card holes to go into promptly to realize the regulation to the space that connecting band 3 encloses, adapt to different patients' user demand, adaptability is higher.

More specifically, circulator 1 has installation cavity 14, and at this moment, sets up controller 6 in installation cavity 14, provides installation space for controller 6's installation through installation cavity 14 promptly, has improved the portability, and structural design is more reasonable.

More specifically, the power supply source provided in the rotator 1 is preferably a rechargeable power source 141, and the rechargeable power source 141 supplies power to the controller 6, thereby further improving the portability of the device. Similarly, the rechargeable power supply 141 is disposed in the installation cavity 14, an installation space is provided for the rechargeable power supply 141 through the installation cavity 14, a charging hole communicated with the outside is formed in the wall of the installation cavity 14, and the charging head 142 is disposed in the charging hole, so that the rechargeable battery can be conveniently supplemented with electric energy through the charging head 142, and the device can be used continuously.

The circuit configuration inside the controller 6 is explained below:

the controller internal circuit comprises a direct current stimulation signal generating circuit, a digital-to-analog conversion circuit, a current regulating circuit and a current output circuit, wherein the output end of the direct current stimulation signal generating circuit is connected with the input end of the digital-to-analog conversion circuit, the output end of the digital-to-analog conversion circuit is connected with the input end of the current regulating circuit, the output end of the current regulating circuit is connected with the input end of the current output circuit, and the current output circuit outputs direct current to the cathode sheet or the anode sheet.

Fig. 5 is a circuit diagram of the internal circuit of the controller according to a preferred embodiment of the present invention. Specifically, as shown in fig. 5, the direct current stimulation signal generation circuit includes a single chip microcomputer U1 with a model number of AT89C51, and a twenty-second pin and a twenty-third pin of the single chip microcomputer U1 are respectively used as a first output end and a second output end of the direct current stimulation signal generation circuit;

the digital-to-analog conversion circuit comprises a chip U3 with the model of MCP4725, a first pin of a chip U3 serves as an output end of the digital-to-analog conversion circuit, a second pin and a sixth pin of a chip U3 are grounded after being in short circuit, and a third pin of the chip U3 is connected with a twenty-second pin of the single chip microcomputer U1; the fourth pin of the chip U3 is connected with the twenty-third pin of the singlechip U1, and the fifth pin of the chip U3 is externally connected with the working voltage of the chip. The chip U3 has the function of converting digital signals output by the singlechip U1 into analog signals, and the digital signals of the singlechip U1 are subjected to digital-to-analog conversion by the chip U3 and then output 0-5V voltage as input of waveform amplitude regulation in the current regulation and control circuit.

The current regulation and control circuit comprises a resistor R1, a variable resistor RV1, a resistor R2, a variable resistor RV2, a resistor R3, a resistor R4, a resistor R6 and an operational amplifier U4, wherein one end of the resistor R1 is connected with a first pin of a chip U3, the other end of the resistor R1 is simultaneously connected with one fixed end of the variable resistor RV1 and one end of the resistor R4, and the other fixed end of the variable resistor RV1 is connected with the variable resistor end and then grounded; the other end of the resistor R4 is connected with the positive input end of an operational amplifier U4 (the model is preferably MCP 601); the inverting input terminal of the operational amplifier U4 is grounded;

one end of the resistor R2 is externally connected with 5V working voltage, the other end of the resistor R2 is simultaneously connected with one fixed end of the variable resistor RV2 and one end of the resistor R3, and the other fixed end of the variable resistor RV2 is connected with the variable resistor end thereof and then grounded; the 5V voltage obtained by the variable resistor RV2 is added by the in-phase adder and the inverter to finally output 0-5V voltage. The output current of the controller can be changed by adjusting the resistance of the variable resistors RV1 and RV2, so that the stimulation intensity of the transcranial current is changed.

The other end of the resistor R3 is respectively connected with one end of the resistor R6 and the positive input end of the operational amplifier U4, and the other end of the resistor R6 is connected with the output end of the operational amplifier U4;

the current regulation and control circuit further comprises a resistor R5, a resistor R7, an operational amplifier U8, a resistor R8, a triode Q1, a diode D1, a capacitor C3, a capacitor C6, a rectifier bridge BR1 and a resistor R9, one end of the resistor 5 is connected with the output end of the operational amplifier U4, the other end of the resistor is connected with the reverse input end of the operational amplifier U8, and the forward input end of the operational amplifier U8 is grounded;

two ends of the resistor R7 are connected between the inverting input end and the output end of the operational amplifier U8;

the output end of the operational amplifier U8 is connected with the eighth pin of a current output chip U9 (model is preferably XTR 111); the positive input end of the operational amplifier U8 is connected to the capacitor C3 and then connected to the thirteenth pin of the current output chip U9; the positive input end of the operational amplifier U8 is also connected with a first input end A of a rectifier bridge BR1, and the positive input end of the operational amplifier U8 is also connected with a capacitor C6 and then connected with a second input end B of the rectifier bridge BR 1; a first output end C of the rectifier bridge BR1 is connected with a ninth pin of the current output chip U9; a second output end D of the rectifier bridge BR1 is connected in series with the resistor R9 and then is connected to a ninth pin of the current output chip U9;

a collector of the triode Q1 is connected with the fourth pin of the current output chip U9, and an emitter of the triode Q1 is connected with the fifth pin of the current output chip U9; a resistor R8 is connected between the collector and the base of the triode Q1, and a forward diode D1 is connected between the base and the emitter of the triode Q1;

a third pin and a sixth pin of the current output chip U9 are respectively used as a first output pin and a second output pin of a current signal of the chip;

the current output circuit comprises a current output chip U9, a capacitor C4 and a resistor R10, a third pin of the current output chip U9 is connected with a sixth pin of the current output chip U9 after being sequentially connected with the capacitor C4 and the resistor R10, an intersection point K of the capacitor C4 and the resistor R10 is connected with an output end of a switch circuit, and the output end of the switch circuit is electrically connected with a cathode sheet or an anode sheet. The switch circuit comprises a plurality of control switches connected in parallel, and each control switch controls the on-off of the current of one cathode sheet or anode sheet.

The device for improving the intelligence of the children through direct current stimulation comprises a rotator 1, a bracket 2, a connecting belt 3, a controller 6, a cathode sheet 4 and an anode sheet 5; through two contact tubes 11 overcoat in the pivot 15 of circulator 1 are equipped with a plurality of curved supports 2, make 2 accessible circulators of support 1 expand or close, convenient to accomodate, the portability is higher, and be provided with elastic contact piece 21 between curved support 2 and the contact tube 11 that corresponds, realize controller 6 and negative pole piece 4 through elastic contact piece 21 and contact tube 11, the electricity of positive pole piece 5 is connected, in addition, but all set up the caulking groove 22 of alternative installation positive pole piece 5 or negative pole piece 4 on each support 2, the expansion of stimulation point quantity has been realized, and the control of the space size that encloses after the expansion of support 2 is realized to the turned angle of accessible control support 2 on circulator 1 and the state of connecting band 3 both ends connection, thereby adapt to different users, the adaptability is improved. In addition, the controller circuit provided by the invention can output the current with variable stimulus waveform amplitude, the stimulus intensity is adjustable, the circuit structure is simple, the stimulus current output is stable and reliable, and the anti-interference capability is strong.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.