A device for improving children's intelligence through direct current stimulation

Abstract

The present invention provides a device for improving children's intelligence through direct current stimulation, belonging to the technical field of medical equipment. A device for improving children's intelligence through direct current stimulation includes a rotator, a bracket, a connecting belt, a controller, a cathode sheet and an anode sheet; the present invention provides a plurality of arc-shaped brackets on the outer sleeves of two conductive tubes on the rotating shaft of the rotator, so that the brackets can be unfolded or closed by the rotator, which is convenient for storage and has higher portability, and elastic contacts are provided between the arc-shaped brackets and the corresponding conductive tubes, and the electrical connection between the controller and the cathode sheet and the anode sheet is achieved through the elastic contacts and the conductive tubes. In addition, each bracket is provided with an embedding groove for selectively installing the anode sheet or the cathode sheet, realizing the expansion of the number of stimulation points, and the size of the space enclosed by the bracket after unfolding 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 belt, so as to adapt to different users and improve adaptability.

Description

Technical Field

[0001] The invention relates to the technical field of medical equipment, and in particular to a device for improving children's intelligence through direct current stimulation. Background Art

[0002] With the development of science and technology, the use of constant, low-intensity direct current to stimulate neurons in the cerebral cortex to treat depression, epilepsy, stroke and other diseases is becoming more and more widely used in clinical practice.

[0003] At present, although the transcranial direct current stimulation devices on the market can stimulate the cortical neurons of the brain, they are too large and inconvenient to operate, so they are not convenient to carry around. For people with mild symptoms and who can lead a normal life, the existing transcranial direct current stimulation devices have many inconveniences in use. In addition, due to the fixed structure of the existing transcranial direct current stimulation devices, not only are they poor in expandability, but they also have the problem of not matching with the user, resulting in poor adaptability. Summary of the invention

[0004] In view of the above-mentioned problems existing in the prior art, the present invention aims to provide a device for improving children's intelligence through direct current stimulation, wherein a plurality of brackets are arranged, and one end of the plurality of brackets are connected through a rotator, so that the brackets can be expanded or tightened through the rotator, which facilitates storage and has higher portability. In addition, the rotator is electrically connected to a controller, and each bracket is connected to the rotator through an elastic contact sheet, so that each bracket can achieve circuit conduction. At the same time, each bracket is provided with an embedding hole for installing electrodes, and one or more anode sheets and cathode sheets can be selected to be installed in different embedding holes, thereby achieving an expansion of the number of stimulation points. At the same time, 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 belt, thereby adapting to different users and improving adaptability.

[0005] In order to solve the above technical problems, the present invention provides a device for improving children's intelligence through direct current stimulation, including a controller, a cathode plate and an anode plate electrically connected to the controller, and a power supply for providing a working voltage for the controller. The device is characterized in that it also includes a rotator, a plurality of brackets and a connecting belt. The rotator is provided with a rotating shaft, and two conductive tubes are sleeved in parallel outside the rotating shaft. The two conductive tubes are electrically connected to the two output electrodes of the controller respectively, and an insulating sleeve is provided between the two conductive tubes. At the same time, each of the brackets is arranged in an arc shape, and the plurality of brackets are divided into two groups. One end of the two groups of brackets is respectively sleeved outside the two conductive tubes. The brackets can fit the patient's head, and the two groups of brackets rotate outside the corresponding conductive tubes respectively. , thereby realizing the expansion or tightening of the bracket. When the bracket is in the expanded state, the plurality of brackets form an accommodating space. When the bracket is in the tightened state, the plurality of brackets are stacked on each other, and each of the brackets is provided with an elastic contact piece with one end abutting against the corresponding conductive tube. The two ends of the connecting belt are detachably connected to form an annular structure. The end of each bracket away from the sleeve outside the conductive tube is connected to the connecting belt. At the same time, an embedding groove is provided on each bracket and is located near the inner side of the arc, and a conductive contact electrically connected to the elastic contact piece on the corresponding bracket is provided in the embedding groove. The cathode sheet or the anode sheet in contact with the conductive contact can be selectively embedded in the embedding groove.

[0006] Preferably, the rotator is provided with a protruding main support frame, and the main support frame has the same shape as the bracket. At the same time, the main support frame is located between the two groups of the brackets. When the brackets are tightened, the brackets are tightened to the inner side of the main support frame. The two groups of brackets located on both sides of the main support frame can be tightened from both sides of the main support frame respectively, and the end of the main support frame facing away from the rotator is also connected to the connecting belt.

[0007] Preferably, one end of the elastic contact piece is hinged on the bracket, the non-hinged end of the elastic contact piece abuts against the outside of the corresponding conductive tube, and the arrangement direction of the elastic contact piece forms an angle with the radial direction of the conductive tube.

[0008] Preferably, the device for improving children's intelligence through direct current stimulation also includes a clamping block and a clamping spring, the clamping block is arranged on the bracket and located on one side of the elastic contact piece, the clamping spring is located between the clamping block and the elastic contact piece, and the two ends of the clamping spring are respectively clamped on the clamping block and the elastic contact piece.

[0009] Preferably, at least two conductive contacts are disposed in each embedding groove, and the conductive contacts in the same embedding groove are dispersedly arranged.

[0010] Preferably, the two ends of the connecting belt are snap-connected; one end of the connecting belt is provided with a plurality of snap holes, and the other end of the connecting belt is provided with a plurality of snap blocks corresponding to the snap holes, and when the two ends of the connecting belt are connected, the snap blocks are snapped into the corresponding snap holes; the number of the snap holes is greater than the number of the snap blocks.

[0011] 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, and a charging hole connected to the outside is opened on the cavity wall of the installation cavity, and a charging head is arranged in the charging hole.

[0012] Preferably, the internal circuit of the controller includes a DC stimulation signal generating circuit, a digital-to-analog conversion circuit, a current control circuit and a current output circuit, the output end of the DC stimulation signal generating circuit is connected to the input end of the digital-to-analog conversion circuit, the output end of the digital-to-analog conversion circuit is connected to the input end of the current control circuit, the output end of the current control circuit is connected to the input end of the current output circuit, and the current output circuit outputs DC power to the cathode plate or the anode plate.

[0013] Preferably, the DC stimulation signal generating circuit includes a single-chip microcomputer U1 of model AT89C51, and the 22nd pin and the 23rd pin of the single-chip microcomputer U1 serve as the first output end and the second output end of the DC stimulation signal generating circuit respectively; the digital-to-analog conversion circuit includes a chip U3 of model MCP4725, and the first pin of the chip U3 serves as the output end of the digital-to-analog conversion circuit, the second pin of the chip U3 is short-circuited with the sixth pin and grounded, and the third pin of the chip U3 is connected to the 22nd pin of the single-chip microcomputer U1; the fourth pin of the chip U3 is connected to the 23rd pin of the single-chip microcomputer U1, and the fifth pin of the chip U3 is connected to the external chip working voltage.

[0014] Preferably, the current control circuit includes 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, one end of the resistor R1 is connected to the first pin of the chip U3, and the other end is simultaneously connected to a fixed end of the variable resistor RV1 and one end of the resistor R4, the other fixed end of the variable resistor RV1 is connected to its variable resistor end and then grounded; the other end of the resistor R4 is connected to the positive input end of the operational amplifier U4; the reverse input end of the operational amplifier U4 is grounded; one end of the resistor R2 is externally connected to a 5V working voltage, and the other end is simultaneously connected to the variable resistor A fixed end of RV2 and one end of the resistor R3, the other fixed end of the variable resistor RV2 is connected to its variable resistor end and then grounded; the other end of the resistor R3 is respectively connected to 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 to the output end of the operational amplifier U4; the current control circuit also includes a resistor R5, a resistor R7, an operational amplifier U8, a resistor R8, a transistor Q1, a diode D1, a capacitor C3, a capacitor C6, a rectifier bridge BR1 and a resistor R9, one end of the resistor R5 is connected to the output end of the operational amplifier U4, and the other end is connected to the operational amplifier U8 The reverse input terminal of the operational amplifier U8 is connected to the reverse input terminal and the output terminal of the operational amplifier U8, and the positive input terminal of the operational amplifier U8 is grounded; the two ends of the resistor R7 are connected between the reverse input terminal and the output terminal of the operational amplifier U8; the output terminal of the operational amplifier U8 is connected to the eighth pin of a current output chip U9; the positive input terminal 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 terminal of the operational amplifier U8 is also connected to the first input terminal A of the rectifier bridge BR1, and the positive input terminal of the operational amplifier U8 is also connected to the capacitor C6 and then connected to the second input terminal B of the rectifier bridge BR1; the rectifier bridge BR The first output terminal C of 1 is connected to the ninth pin of the current output chip U9; the second output terminal D of the rectifier bridge BR1 is connected to the ninth pin of the current output chip U9 after being connected in series with the resistor R9; the collector of the transistor Q1 is connected to the fourth pin of the current output chip U9, and the emitter is connected to the fifth pin of the current output chip U9; the resistor R8 is connected between the collector and the base of the transistor Q1, and a forward diode D1 is connected between the base and the emitter of the transistor Q1; the third pin and the sixth pin of the current output chip U9 are respectively used as the first output pin and the second output pin of the chip's current signal;The current output circuit includes the current output chip U9, capacitor C4 and resistor R10, the third pin of the current output chip U9 is connected to the capacitor C4 and the resistor R10 in sequence and then connected to the sixth pin of the current output chip U9, the intersection point K of the capacitor C4 and the resistor R10 is connected to the output end of a switch circuit, and the output end of the switch circuit is electrically connected to the cathode plate or the anode plate. ;

[0015] Compared with the prior art, the beneficial effect of the present invention is that a number of arc-shaped brackets are provided on the outer sleeves of the two conductive tubes on the rotating shaft of the rotator, so that the brackets can be expanded or tightened through the rotator, which is convenient for storage and has higher portability. Elastic contact sheets are provided between the arc-shaped brackets and the corresponding conductive tubes. In addition, each bracket is provided with an embedding groove, and an anode sheet or a cathode sheet can be selectively installed in the embedding groove, thereby expanding the number of stimulation points. At the same time, the size of the space enclosed by the bracket after it is expanded 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 belt, thereby adapting to different users and improving adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A structural diagram of an embodiment of a device for improving children's intelligence through direct current stimulation according to the present invention;

[0017] Figure 2 This is a structural diagram of a preferred embodiment of the present invention after the bracket is unfolded;

[0018] Figure 3 It is an installation diagram of a resilient contact piece according to a preferred embodiment of the present invention;

[0019] Figure 4 A structural diagram of an embedded groove on a bracket of a preferred embodiment of the present invention;

[0020] Figure 5 It is a schematic diagram of the circuit structure inside the controller of a preferred embodiment of the present invention;

[0021] In the attached drawings: 1. rotator; 11. conductive tube; 12. insulating sleeve; 13. main support frame; 14. mounting cavity; 15. rotating shaft; 141. rechargeable power source; 142. charging head; 2. bracket; 21. elastic contact piece; 22. embedding groove; 211. tightening block; 212. tightening spring; 221. conductive contact; 3. connecting belt; 31. clamping block; 4. cathode piece; 5. anode piece; 6. controller. DETAILED DESCRIPTION

[0022] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0023] like Figure 1 , Figure 2 As shown, the device for improving children's intelligence through direct current stimulation provided in this embodiment includes: a controller 6, a cathode plate 4, an anode plate 5, a rotator 1, a bracket 2, a connecting belt 3 and a power supply for providing a working voltage for the controller.

[0024] Specifically, Figure 3 As shown, a protruding shaft 15 is provided on the rotator 1 (the rotator can be rotated manually or electrically), and at the same time, along the axial direction of the shaft 15, two conductive tubes 11 are arranged outside the shaft 15 in parallel, and the two conductive tubes 11 are respectively electrically connected to the two output electrodes of the controller 6, so that the current output by the controller 6 can be transmitted to the two conductive tubes 11 respectively, which provides conditions for the subsequent transmission of the current to the cathode plate 4 or the anode plate 5 on the bracket 2 through the conductive tubes 11. In addition, 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 interference or short circuit between the conductive tubes 11. At the same time, each bracket 2 is arranged in an arc shape to better conform to the shape of the patient's head, so that the bracket 2 can fit the patient's head and ensure the use effect. In addition, the plurality of brackets 2 are divided into two groups. At this time, one end of the two groups of brackets 2 is respectively sleeved outside the two conductive tubes 11, that is, the two groups of brackets 2 rotate outside the corresponding conductive tubes 11, so as to realize the expansion or tightening of the brackets 2. When the brackets 2 are in the expanded state, the plurality of brackets 2 enclose a storage space, which is convenient for sleeved on the patient's head, and when the brackets 2 are in the tightened state, the plurality of brackets 2 are stacked on each other, occupying a small space and being convenient for storage. In addition, each bracket 2 is provided with an elastic contact piece 21 with one end against the corresponding conductive tube 11, that is, the bracket 2 and the rotator 1 are electrically connected through the elastic contact piece 21 and the conductive tube 11, and the elastic contact piece 21 can ensure that the bracket 2 is always in contact with the conductive tube 11 during the rotation process, thereby ensuring the reliability of the electrical connection. In addition, the two ends of the connecting belt 3 are detachably connected and form a ring structure, that is, the size of the space enclosed by the connecting belt 3 is adjusted by whether the two ends of the connecting belt 3 are connected and the state when connected, thereby providing conditions for subsequent adaptation to different patients, and having better adaptability. At this time, the end of each bracket 2 away from the conductive tube 11 is connected to the connecting belt 3, that is, the end of each bracket 2 away from the conductive tube 11 is connected by the connecting belt 3, which ensures the stability of the structure. At the same time, the connecting belt 3 also limits the rotation angle of the bracket 2 to prevent the bracket 2 from rotating excessively, and the safety is higher. Figure 4As shown, an embedding groove 22 is provided on each bracket 2 and is located near the inner side of the arc, and a conductive contact 221 electrically connected to the elastic contact piece 21 on the corresponding bracket 2 is provided in the embedding groove 22, so that the current transmitted to the elastic contact piece 21 through the conductive tube 11 can be transmitted to the corresponding conductive contact 221, and at the same time, the cathode piece 4 or the anode piece 5 in contact with the conductive contact 221 can be selectively embedded in the embedding groove 22, that is, the current output by the controller 6 is transmitted to the cathode piece 4 or the anode piece 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 piece 4 or the anode piece 5 can be installed by selecting different numbers of embedding grooves 22, so that the number of cathode pieces 4 and anode pieces 5 can be selected, thereby increasing the stimulation points, having stronger expandability and more reasonable structural design.

[0025] More specifically, a main support frame 13 extending out is provided on the rotator 1, and the shape of the main support frame 13 is set to be the same as the shape of the bracket 2, but the size of the main support frame 13 is set to be larger than the size 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 protection of the bracket 2 is achieved through the main support frame 13, and the structural design is more reasonable. At the same time, the main support frame 13 is set between the two groups of brackets 2, that is, the two groups of brackets 2 located on both sides of the main support frame 13 can be tightened from both sides of the main support frame 13, and the main support frame 13 can also provide the same supporting force for the brackets 2 on both sides, ensuring the uniformity of the structural force. In addition, the end of the main support frame 13 away from the rotator 1 is also connected to the connecting belt 3, so that the connecting belt 3 is also connected to the main support frame 13, so that the end of the bracket 2 connected to the connecting belt 3 can also be supported by the main support frame 13, ensuring the stability and reliability of the structure, and the structural strength is higher.

[0026] Figure 3 FIG. 1 is an installation diagram of a resilient contact piece according to a preferred embodiment of the present invention. Figures 1 to 3 As shown, one end of the elastic contact piece 21 is hinged on the bracket 2, so that the elastic contact piece 21 can swing on the bracket 2. At the same time, the non-hinged end of the elastic contact piece 21 abuts against the outside of the corresponding conductive tube 11, thereby realizing the connection between the elastic contact piece 21 and the corresponding conductive tube 11. In addition, the arrangement direction of the elastic contact piece 21 is arranged at an angle to the radial direction of the conductive tube 11, that is, the elastic contact piece 21 is arranged along a tangent direction approximately to the conductive tube 11, thereby increasing the contact area between the elastic contact piece 21 and the conductive tube 11, avoiding the problem of poor contact, and making the structural design more reasonable.

[0027] More specifically, the bracket 2 is also provided with a clamping block 211 and a clamping spring 212. At this time, the clamping block 211 is arranged on the bracket 2 and is located on one side of the elastic contact piece 21. Preferably, the clamping block 211 is arranged on the side of the elastic contact piece 21 inclined toward the conductive tube 11, and the clamping spring 212 is located between the clamping block 211 and the elastic contact piece 21, and the two ends of the clamping spring 212 are respectively clamped on the clamping block 211 and the elastic contact piece 21, and the clamping spring 212 is in a compressed state, so that the clamping spring 212 can provide pressure to the elastic contact piece 21, so that the elastic contact piece 21 can be pressed more tightly on the corresponding conductive tube 11, further preventing the problem of poor contact, and the structural design is more reasonable.

[0028] Figure 4 This is a structural diagram of the embedded groove on the bracket of a preferred embodiment of the present invention. Figure 1 and Figure 4 As shown, at least two conductive contacts 221 are arranged in each embedding groove 22 provided on the bracket 2. A suitable number of conductive contacts 221 are selected according to actual use requirements, and the conductive contacts 221 in the same embedding groove 22 are dispersedly arranged, so that after the cathode sheet 4 or the anode sheet 5 is installed in the embedding groove 22, different parts of the cathode sheet 4 or the anode sheet 5 are in contact with the corresponding conductive contacts 221, thereby preventing the problem of poor contact of a single conductive contact 221 and causing the device to be unusable, and ensuring better use.

[0029] More specifically, the two ends of the connecting belt 3 used to connect the end of the bracket 2 away from the rotator 1 are snap-connected, making it easier to connect and disconnect the two ends of the connecting belt 3, thereby making it easier to put the device on the patient's head, and also facilitating the adjustment of the size of the space enclosed by the bracket 2, and the structural design is more reasonable.

[0030] More specifically, one end of the connecting belt 3 is provided with a plurality of clamping holes, and the other end of the connecting belt 3 is provided with a plurality of clamping blocks 31 corresponding to the clamping holes, and when the two ends of the connecting belt 3 are connected, the clamping blocks 31 are clamped into the corresponding clamping holes, that is, after the clamping blocks 31 are taken out from the clamping holes, the two ends of the connecting belt 3 are separated, which is convenient for the stent 2 to be folded, and after the clamping blocks 31 are clamped into the clamping holes, the two ends of the connecting belt 3 are connected, at this time, the connecting belt 3 forms a ring structure, so that the space enclosed by the stent 2 after it is unfolded can be limited by the connecting belt 3, so that it can be stably mounted on the patient's head, and the structural design is more reasonable. It is worth pointing out that the connecting belt 3 is a flexible belt, which is convenient for the connecting belt 3 to bend synchronously when the stent 2 is folded, ensuring that the stent 2 can be completely folded, and the structural design is more reasonable.

[0031] More specifically, the number of the card holes on the connecting belt 3 is greater than the number of the card blocks 31, that is, the card blocks 31 can be selected to be inserted into different card holes, thereby adjusting the space surrounded by the connecting belt 3 to meet the usage needs of different patients and having higher adaptability.

[0032] More specifically, the rotator 1 has an installation cavity 14. At this time, the controller 6 is arranged in the installation cavity 14, that is, the installation cavity 14 provides an installation space for the installation of the controller 6, thereby improving portability and making the structural design more reasonable.

[0033] More specifically, the power supply provided in the rotator 1 is preferably a rechargeable power supply 141, which provides power to the controller 6, further improving the portability of the device. Similarly, the rechargeable power supply 141 is provided in the installation cavity 14, and the installation cavity 14 provides an installation space for the rechargeable power supply 141. In addition, a charging hole connected to the outside is provided on the cavity wall of the installation cavity 14, and a charging head 142 is provided in the charging hole, so that the rechargeable battery can be supplemented with power through the charging head 142, thereby realizing sustainable use of the device.

[0034] The circuit structure inside the controller 6 is described below:

[0035] The internal circuit of the controller includes a DC stimulation signal generating circuit, a digital-to-analog conversion circuit, a current control circuit and a current output circuit. The output end of the DC stimulation signal generating circuit is connected to the input end of the digital-to-analog conversion circuit, the output end of the digital-to-analog conversion circuit is connected to the input end of the current control circuit, the output end of the current control circuit is connected to the input end of the current output circuit, and the current output circuit outputs DC power to the cathode or anode.

[0036] Figure 5 FIG. 1 shows a circuit structure diagram of the internal circuit of the controller provided by a preferred embodiment of the present invention. Specifically, Figure 5 As shown, the DC stimulation signal generating circuit includes a single-chip microcomputer U1 of model AT89C51, and the 22nd pin and the 23rd pin of the single-chip microcomputer U1 are respectively used as the first output terminal and the second output terminal of the DC stimulation signal generating circuit;

[0037] The digital-to-analog conversion circuit includes a chip U3 of model MCP4725. The first pin of the chip U3 is used as the output end of the digital-to-analog conversion circuit. The second pin of the chip U3 is short-circuited with the sixth pin and then grounded. The third pin of the chip U3 is connected to the 22nd pin of the single-chip computer U1. The fourth pin of the chip U3 is connected to the 23rd pin of the single-chip computer U1. The fifth pin of the chip U3 is connected to the external chip working voltage. The function of the chip U3 is to convert the digital signal output by the single-chip computer U1 into an analog signal. The digital signal of the single-chip computer U1 is converted by the digital-to-analog conversion of the chip U3 and outputs a voltage of 0 to 5V as the input of the waveform amplitude adjustment in the current control circuit.

[0038] The current control circuit includes 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. One end of the resistor R1 is connected to the first pin of the chip U3, and the other end is simultaneously connected to a fixed end of the variable resistor RV1 and one end of the resistor R4. The other fixed end of the variable resistor RV1 is connected to its variable resistor end and then grounded; the other end of the resistor R4 is connected to the positive input end of the operational amplifier U4 (preferably the model is MCP601); the reverse input end of the operational amplifier U4 is grounded;

[0039] One end of the resistor R2 is connected to an external 5V working voltage, and the other end is connected to a fixed end of the variable resistor RV2 and one end of the resistor R3. The other fixed end of the variable resistor RV2 is connected to its variable resistor end and then grounded. The 5V voltage obtained by the variable resistor RV2 is added through the in-phase adder and the inverter to finally output a 0-5V voltage. The output current of the controller can be changed by adjusting the resistance of the variable resistors RV1 and RV2, thereby changing the stimulation intensity of the transcranial current.

[0040] The other end of the resistor R3 is connected to one end of the resistor R6 and the positive input end of the operational amplifier U4 respectively, and the other end of the resistor R6 is connected to the output end of the operational amplifier U4;

[0041] The current control circuit also includes a resistor R5, a resistor R7, an operational amplifier U8, a resistor R8, a transistor Q1, a diode D1, a capacitor C3, a capacitor C6, a rectifier bridge BR1 and a resistor R9, one end of the resistor R5 is connected to the output end of the operational amplifier U4, and the other end is connected to the reverse input end of the operational amplifier U8, and the forward input end of the operational amplifier U8 is grounded;

[0042] The two ends of the resistor R7 are connected between the inverting input terminal and the output terminal of the operational amplifier U8;

[0043] The output end of the operational amplifier U8 is connected to the eighth pin of a current output chip U9 (preferably XTR111); the positive input end of the operational amplifier U8 is connected to the capacitor C3 and then to the thirteenth pin of the current output chip U9; the positive input end of the operational amplifier U8 is also connected to the first input end A of the rectifier bridge BR1, and the positive input end of the operational amplifier U8 is also connected to the capacitor C6 and then to the second input end B of the rectifier bridge BR1; the first output end C of the rectifier bridge BR1 is connected to the ninth pin of the current output chip U9; the second output end D of the rectifier bridge BR1 is connected in series with the resistor R9 and then to the ninth pin of the current output chip U9;

[0044] The collector of the transistor Q1 is connected to the fourth pin of the current output chip U9, and the emitter is connected to the fifth pin of the current output chip U9; a resistor R8 is connected between the collector and the base of the transistor Q1, and a forward diode D1 is connected between the base and the emitter of the transistor Q1;

[0045] The third pin and the sixth pin of the current output chip U9 are used as the first output pin and the second output pin of the current signal of the chip respectively;

[0046] The current output circuit includes a current output chip U9, a capacitor C4 and a resistor R10. The third pin of the current output chip U9 is connected to the capacitor C4 and the resistor R10 in sequence and then connected to the sixth pin of the current output chip U9. The intersection point K of the capacitor C4 and the resistor R10 is connected to the output end of a switch circuit. The output end of the switch circuit is electrically connected to the cathode sheet or the anode sheet. The switch circuit includes a plurality of control switches connected in parallel, and each control switch controls the current on and off of a cathode sheet or an anode sheet.

[0047] The device for improving children's intelligence through direct current stimulation provided in this embodiment includes a rotator 1, a bracket 2, a connecting belt 3, a controller 6, a cathode sheet 4 and an anode sheet 5; by arranging a plurality of arc-shaped brackets 2 on the outer sleeves of the two conductive tubes 11 on the rotating shaft 15 of the rotator 1, the bracket 2 can be unfolded or closed by the rotator 1, which is convenient for storage and has higher portability, and an elastic contact sheet 21 is arranged between the arc-shaped bracket 2 and the corresponding conductive tube 11, and the controller 6 and the cathode sheet 4 and the anode sheet 5 are electrically connected through the elastic contact sheet 21 and the conductive tube 11, and each bracket 2 is provided with an embedding groove 22 for selectively installing the anode sheet 5 or the cathode sheet 4, so as to expand the number of stimulation points, and the size of the space enclosed by the bracket 2 after unfolding can be controlled by controlling the rotation angle of the bracket 2 on the rotator 1 and the state of connection at both ends of the connecting belt 3, so as to adapt to different users and improve adaptability. In addition, the controller circuit provided by the present invention can output a current with a variable amplitude of the stimulation waveform, and the stimulation intensity is adjustable, and the circuit structure is simple, the stimulation current output is stable and reliable, and the anti-interference ability is strong.

[0048] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A device for improving children's intelligence through direct current stimulation, comprising a controller, a cathode plate and an anode plate electrically connected to the controller, and a power supply for providing a working voltage to the controller, characterized in that: It also includes a rotator, a plurality of brackets and a connecting belt, the rotator is provided with a rotating shaft, two conductive tubes are sleeved in parallel outside the rotating shaft, the two conductive tubes are electrically connected to the two output electrodes of the controller respectively, and an insulating sleeve is provided between the two conductive tubes, and at the same time, each of the brackets is arranged in an arc shape, and the plurality of brackets are divided into two groups, one end of the two groups of brackets is sleeved outside the two conductive tubes respectively, the brackets can fit the patient's head, and the two groups of brackets are rotated outside the corresponding conductive tubes respectively, so as to realize the expansion or tightening of the brackets. When the brackets are in the expanded state, the plurality of brackets surround a accommodating space, and the brackets are arranged in an arc shape. When the bracket is in a tightened state, several brackets are stacked on each other, and each of the brackets is provided with an elastic contact piece with one end resting on the corresponding conductive tube, the two ends of the connecting belt are detachably connected to form a ring structure, and the end of each bracket away from the sleeve outside the conductive tube is connected to the connecting belt. At the same time, each bracket is provided with an embedding groove on the inner side close to its arc, and the embedding groove is provided with a conductive contact point electrically connected to the elastic contact piece on the corresponding bracket, and the cathode sheet or the anode sheet in contact with the conductive contact point can be selectively embedded in the embedding groove.

2. The device for improving children's intelligence through direct current stimulation according to claim 1, characterized in that: The rotator is provided with a protruding main support frame, which has the same shape as the bracket. At the same time, the main support frame is located between the two groups of brackets. When the brackets are tightened, the brackets are tightened on the inner side of the main support frame. The two groups of brackets located on both sides of the main support frame can be tightened from both sides of the main support frame respectively, and the end of the main support frame away from the rotator is also connected to the connecting belt.

3. The device for improving children's intelligence through direct current stimulation according to claim 1, characterized in that: One end of the elastic contact piece is hinged on the bracket, the non-hinged end of the elastic contact piece abuts against the outside of the corresponding conductive tube, and the arrangement direction of the elastic contact piece forms an angle with the radial direction of the conductive tube.

4. The device for improving children's intelligence through direct current stimulation according to claim 3, characterized in that: It also includes a clamping block and a clamping spring, wherein the clamping block is arranged on the bracket and located on one side of the elastic contact piece, the clamping spring is located between the clamping block and the elastic contact piece, and the two ends of the clamping spring are respectively clamped on the clamping block and the elastic contact piece.

5. The device for improving children's intelligence through direct current stimulation according to claim 1, characterized in that: At least two conductive contacts are arranged in each embedding groove, and the conductive contacts in the same embedding groove are dispersedly arranged.

6. The device for improving children's intelligence through direct current stimulation according to claim 1, characterized in that: The two ends of the connecting belt are snap-connected; one end of the connecting belt is provided with a plurality of snap holes, and the other end of the connecting belt is provided with a plurality of snap blocks corresponding to the snap holes, and when the two ends of the connecting belt are connected, the snap blocks are snapped into the corresponding snap holes; the number of the snap holes is greater than the number of the snap blocks.

7. The device for improving children's intelligence through direct current stimulation according to claim 1, characterized in that: 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, and a charging hole connected to the outside is opened on the cavity wall of the installation cavity, and a charging head is arranged in the charging hole.

8. The device for improving children's intelligence through direct current stimulation according to claim 1, characterized in that: The internal circuit of the controller includes a DC stimulation signal generating circuit, a digital-to-analog conversion circuit, a current control circuit and a current output circuit. The output end of the DC stimulation signal generating circuit is connected to the input end of the digital-to-analog conversion circuit, the output end of the digital-to-analog conversion circuit is connected to the input end of the current control circuit, the output end of the current control circuit is connected to the input end of the current output circuit, and the current output circuit outputs DC power to the cathode plate or the anode plate.

9. The device for improving children's intelligence through direct current stimulation according to claim 8, characterized in that: The direct current stimulation signal generating circuit comprises a single chip microcomputer U1 of model AT89C51, and the 22nd and 23rd pins of the single chip microcomputer U1 serve as the first output terminal and the second output terminal of the direct current stimulation signal generating circuit respectively; The digital-to-analog conversion circuit includes a chip U3 of model MCP4725, wherein the first pin of the chip U3 serves as the output end of the digital-to-analog conversion circuit, the second pin of the chip U3 is short-circuited with the sixth pin and then grounded, the third pin of the chip U3 is connected to the twenty-second pin of the single-chip computer U1; the fourth pin of the chip U3 is connected to the twenty-third pin of the single-chip computer U1, and the fifth pin of the chip U3 is connected to the external chip operating voltage.

10. The device for improving children's intelligence through direct current stimulation according to claim 9, characterized in that: The current control circuit includes 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. One end of the resistor R1 is connected to the first pin of the chip U3, and the other end is simultaneously connected to a fixed end of the variable resistor RV1 and one end of the resistor R4. The other fixed end of the variable resistor RV1 is connected to its variable resistor end and then grounded; the other end of the resistor R4 is connected to the positive input end of the operational amplifier U4; and the reverse input end of the operational amplifier U4 is grounded; One end of the resistor R2 is externally connected to a 5V working voltage, and the other end is simultaneously connected to a 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 to its variable resistor end and then grounded; the other end of the resistor R3 is respectively connected to 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 to the output end of the operational amplifier U4; The current control circuit also includes a resistor R5, a resistor R7, an operational amplifier U8, a resistor R8, a transistor Q1, a diode D1, a capacitor C3, a capacitor C6, a rectifier bridge BR1 and a resistor R9, one end of the resistor R5 is connected to the output end of the operational amplifier U4, and the other end is connected to the reverse input end of the operational amplifier U8, and the forward input end of the operational amplifier U8 is grounded; The two ends of the resistor R7 are connected between the inverting input terminal and the output terminal of the operational amplifier U8; The output end of the operational amplifier U8 is connected to the eighth pin of a current output chip U9; 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 to the first input end A of the rectifier bridge BR1, and the positive input end of the operational amplifier U8 is also connected to the capacitor C6 and then connected to the second input end B of the rectifier bridge BR1; the first output end C of the rectifier bridge BR1 is connected to the ninth pin of the current output chip U9; the second output end D of the rectifier bridge BR1 is connected in series with the resistor R9 and then connected to the ninth pin of the current output chip U9; The collector of the transistor Q1 is connected to the fourth pin of the current output chip U9, and the emitter is connected to the fifth pin of the current output chip U9; the resistor R8 is connected between the collector and the base of the transistor Q1, and a forward diode D1 is connected between the base and the emitter of the transistor Q1; The third pin and the sixth pin of the current output chip U9 are used as the first output pin and the second output pin of the current signal of the chip respectively; The current output circuit includes the current output chip U9, the capacitor C4 and the resistor R10. The third pin of the current output chip U9 is connected to the capacitor C4 and the resistor R10 in sequence and then connected to the sixth pin of the current output chip U9. The intersection point K of the capacitor C4 and the resistor R10 is connected to the output end of a switching circuit. The output end of the switching circuit is electrically connected to the cathode plate or the anode plate.

Images