CN209790616U - Neuromuscular stimulator - Google Patents
Neuromuscular stimulator Download PDFInfo
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- CN209790616U CN209790616U CN201822060092.9U CN201822060092U CN209790616U CN 209790616 U CN209790616 U CN 209790616U CN 201822060092 U CN201822060092 U CN 201822060092U CN 209790616 U CN209790616 U CN 209790616U
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Abstract
The utility model discloses a neuromuscular stimulator, which comprises a power switch, a PCB board installation chamber, an alignment mark line, a rubber skin, a stimulation electrode, a drug guiding groove, a soft adhesive layer, a charging interface, a first switch control circuit, a first voltage amplifying circuit, a first constant current circuit, a stimulation current output circuit, a second switch control circuit, a second voltage amplifying circuit and a second constant current circuit, the utility model discloses a neuromuscular stimulator for accurately controlling stimulation current, which adopts a URAT serial port on a singlechip to be connected with a Bluetooth module, the Bluetooth module is connected with a mobile phone, waveform, frequency, pulse width, gap time and maximum stimulation current parameter are inputted by the mobile phone, the singlechip controls a D/A chip to output waveform, constant current generated by adding the constant current circuit through the switch control circuit stimulates a target tissue, a sampling resistor R11 is added in the circuit, the current intensity flowing through human tissues is obtained through the resistance feedback flowing into the resistor R11, so that the use process is safer.
Description
Technical Field
The utility model relates to the technical field of medical equipment, especially, relate to a neuromuscular stimulator.
Background
The nerve muscle electrical stimulation is that electrodes are placed on the surface of human skin and specific current is applied, current pulses replace nerve signals sent by the brain, muscles are stimulated to generate a contraction activity, the electrical stimulation usually uses low-frequency pulse current with the frequency lower than 1kHz, the most important characteristic of the low-frequency pulse current is that the nerve signals can be stimulated to the human body sense and motor, the nerve excitation response is caused without damaging the nerve, the electrical stimulation instrument acts on target tissues through the current, the target tissues generate corresponding function changes, the stimulation mode, the stimulation current, the waveform and the like can influence the treatment effect, at present, the existing nerve muscle electrical stimulation instrument on the market generally only has a single treatment mode, and the limitation is large.
SUMMERY OF THE UTILITY MODEL
The present invention aims at solving at least one of the technical problems in the related art to a certain extent. Therefore, an object of the present invention is to provide a neuromuscular stimulator, which realizes the adjustability of the input waveform, frequency, pulse width, gap time and maximum stimulation current parameters, and adopts adaptive current intensities for different parts to achieve the best therapeutic effect.
according to the utility model discloses neuromuscular stimulator, including switch, PCB board installation room, alignment mark line, rubber epidermis, stimulation electrode, the leading-in recess of medicine, soft viscose layer, wherein, the switch downside sets up PCB board installation room, PCB installation room with switch signal connection, PCB installation room upside sets up the rubber epidermis, PCB installation room downside sets up stimulation electrode, the setting of stimulation electrode middle part the leading-in recess of medicine, the stimulation electrode downside sets up soft viscose layer.
In some embodiments of the present invention, the PCB is installed in the PCB installation room, and the PCB is provided with a Bluetooth module, a single chip, a DA conversion module, a voltage amplification module, a constant current circuit module, a power supply module, a switch control module, and a stimulation current output module, wherein the Bluetooth module is electrically connected to the UART port of the single chip, the signal output terminal of the single chip is electrically connected to the signal input terminal of the switch control module, the signal input terminal of the switch control module is electrically connected to the signal output terminal of the power supply module, the signal output terminal of the switch control module is electrically connected to the signal input terminal of the stimulation current output module, the signal output terminal of the single chip is electrically connected to the signal input terminal of the DA conversion module, the signal output terminal of the DA conversion module is electrically connected to the signal input, the signal output end of the voltage amplification module is in electrical signal connection with the signal input end of the constant current circuit module, the signal output end of the constant current circuit module is in electrical signal connection with the signal input end of the stimulation current output module, and the output end of the stimulation current output module is in electrical signal connection with the stimulation electrode.
In other embodiments of the present invention, the single chip signal output end and the switch control module signal input end are provided with a light frequency isolator for electrically isolating the control circuit from the switch circuit.
In other embodiments of the present invention, the switch control module includes an optical isolator OC, a resistor R1, a transistor Q1, a resistor R2, a resistor R3, and a transistor Q2, wherein the optical isolator OC signal output end passes through a resistor R1 and a base of a transistor Q1 are connected, the emitting set of the transistor Q1 is grounded, the collector of the transistor Q1 passes through a resistor R2 and a base of the transistor Q2 are connected, the emitting set of the transistor Q2 passes through a resistor R3 and a base of the transistor Q2 are directly connected, and the collector of the transistor Q2 is an output port.
In other embodiments of the present invention, the PCB board includes a first switch control circuit, a first voltage amplifying circuit, a first constant current circuit, a stimulation current output circuit, a second switch control circuit, a second voltage amplifying circuit, a second constant current circuit, a single chip, and a D/a chip for converting current from direct current to alternating current, the single chip outputs three signals, the single chip output interface 1 is electrically connected to the first switch control circuit con1 interface, the first switch control circuit signal output end is electrically connected to the stimulation current output circuit signal input end, the single chip output interface 2 is electrically connected to the second switch control circuit con2 interface, the second switch control circuit signal output end is electrically connected to the stimulation current output circuit signal input end, the single chip output interface 3 is electrically connected to the D/a chip signal input end, the D/A chip is output in two paths, a first output end of the D/A chip is connected with a V1 interface of the first voltage amplifying circuit, a signal output end of the first voltage amplifying circuit is in electric signal connection with a signal input end of the first constant current circuit, a signal output end of the first constant current circuit is in electric signal connection with a signal input end of the stimulating current output circuit, a second output end of the D/A chip is in electric signal connection with a V2 port of the second voltage amplifying circuit, a signal output end of the second voltage amplifying circuit is in electric signal connection with a signal input end of the second constant current circuit, and a signal output end of the second constant current circuit is in electric signal connection with a signal input end of the stimulating current output circuit.
In other embodiments of the present invention, a first amplifier U1 is disposed inside the first voltage amplifying circuit, a transistor Q3 is disposed inside the first constant current circuit, the positive phase input port V1 of the first amplifier U1 is connected to the first output terminal of the D/a chip, the negative phase input terminal of the first amplifier U1 is connected to the emission set of the transistor Q2, the output terminal of the first amplifier U1 is connected to the base of the transistor Q3, the collector of the transistor Q3 is electrically connected to the signal input terminal of the stimulation current output circuit, a second amplifier U2 is disposed inside the second voltage amplifying circuit, a transistor Q4 is disposed inside the second constant current circuit, the positive phase input terminal of the second amplifier U2 is connected to the second output terminal of the D/a chip 2, the negative phase input terminal of the second amplifier U2 is connected to the emission set of the transistor Q4, the output end of the second amplifier U2 is connected with the base of the triode Q4, and the collector of the triode Q4 is electrically connected with the signal input end of the stimulation current output circuit.
In other embodiments of the present invention, the rear side of the PCB board installation chamber is provided with a mark line for alignment when the person fits the muscle, and the right part of the PCB board installation chamber is provided with a charging interface.
In other embodiments of the present invention, the inverting input terminal of the first amplifier U1, the common junction of the transistor Q3 and the inverting input terminal of the second amplifier U2, the common junction of the transistor Q4 and the common junction of the transistor Q4 are connected to the point a, and the point a is provided with a sampling resistor R11.
The utility model provides a beneficial effect is: the device is characterized in that a URAT serial port on a singlechip is connected with a Bluetooth module, the Bluetooth module is connected with a mobile phone, the waveform, the frequency, the pulse width, the gap time and the maximum stimulation current parameter are input through the mobile phone, the singlechip controls a D/A chip to output the waveform, a constant current circuit is added through a switch control circuit to generate constant current to stimulate target tissues, a sampling resistor R11 is added into the circuit, the current intensity flowing through human tissues is obtained through the resistance feedback of an inflow resistor R11, the use process is safer, the cell excitation is promoted through electrical stimulation, the thrombus is effectively prevented, cotton wool attached with medicines is arranged in a medicine introducing groove, and the absorption of the medicines by patient tissues is promoted.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
Fig. 1 is a right side view of a neuromuscular stimulator in accordance with the present invention;
Fig. 2 is a schematic structural diagram of a neuromuscular stimulator according to the present invention;
Fig. 3 is a bottom view of a neuromuscular stimulator in accordance with the present invention;
Fig. 4 is a schematic diagram of a neuromuscular stimulator in accordance with the present invention;
Fig. 5 is a schematic diagram of a switch control circuit of the neuromuscular stimulator according to the present invention;
Fig. 6 is a schematic circuit diagram of a neuromuscular stimulator according to the present invention.
In the figure: the device comprises a power switch 1, a PCB board mounting chamber 2, an alignment mark line 3, a rubber skin 4, a stimulation electrode 5, a medicine introducing groove 6, a soft adhesive layer 7, a charging interface 8, a first switch control circuit 9, a first voltage amplification circuit 10, a first constant current circuit 11, a stimulation current output circuit 12, a second switch control circuit 13, a second voltage amplification circuit 14 and a second constant current circuit 15.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Referring to fig. 1-3, a neuromuscular stimulator comprises a power switch 1, a PCB board installation chamber 2, a rubber skin 4, a stimulation electrode 5, a drug introduction groove 6 and a soft adhesive layer 7, wherein the PCB board installation chamber 2 is arranged at the lower side of the power switch 1, the PCB installation chamber 2 is in electrical signal connection with the power switch 1, the rubber skin 4 is arranged at the upper side of the PCB installation chamber 2, the stimulation electrode 5 is arranged at the lower side of the PCB installation chamber 2, the drug introduction chamber groove 6 is arranged at the middle part of the stimulation electrode 5, and the soft adhesive layer 7 is arranged at the lower side of the stimulation electrode 5; the rear side of the PCB board installation chamber 2 is provided with a sign line 3 which is aligned when a person is attached to muscles, and the right part of the PCB board installation chamber 2 is provided with a charging interface 8.
Referring to fig. 4, a PCB board is installed in the PCB installation room, a bluetooth module, a single chip, a DA conversion module, a voltage amplification module, a constant current circuit module, a power module, a switch control module, and a stimulation current output module are installed on the PCB board, wherein the bluetooth module is electrically connected to a UART port of the single chip, a signal output terminal of the single chip is electrically connected to a signal input terminal of the switch control module, a signal input terminal of the switch control module is electrically connected to a signal output terminal of the power module, a signal output terminal of the switch control module is electrically connected to a signal input terminal of the stimulation current output module, a signal output terminal of the single chip is electrically connected to a signal input terminal of the DA conversion module, a signal output terminal of the DA conversion module is electrically connected to a, the signal output end of the constant current circuit module is electrically connected with the signal input end of the stimulation current output module, and the output end of the stimulation current output module is electrically connected with the stimulation electrode; and a light frequency isolator for realizing the electrical isolation of the control circuit and the switch circuit is arranged between the signal output end of the singlechip and the signal input end of the switch control module.
Referring to fig. 5, the switch control module includes an optical isolator OC, a resistor R1, a transistor Q1, a resistor R2, a resistor R3, and a transistor Q2, wherein a signal output end of the optical isolator OC is connected to a base of a transistor Q1 through a resistor R1, an emission set of the transistor Q1 is grounded, a collector of the transistor Q1 is connected to a base of the transistor Q2 through a resistor R2, an emission set of the transistor Q2 is directly connected to a base of a transistor Q2 through a resistor R3, and the collector of the transistor Q2 is an output port.
referring to fig. 6, the PCB board includes a first switch control circuit 9, a first voltage amplifying circuit 10, a first constant current circuit 11, a stimulation current output circuit 12, a second switch control circuit 13, a second voltage amplifying circuit 14, a second constant current circuit 15, a single chip microcomputer, and a D/a chip for converting current from direct current to alternating current, the single chip microcomputer outputs three signals, a single chip microcomputer output interface 1 is electrically connected to a first switch control circuit 9con1 interface, a first switch control circuit 9 signal output end is electrically connected to a stimulation current output circuit 12 signal input end, a single chip microcomputer output interface 2 is electrically connected to a second switch control circuit 13con2 interface, a second switch control circuit 13 signal output end is electrically connected to a stimulation current output circuit 12 signal input end, a single chip microcomputer output interface 3 is electrically connected to a D/a chip signal input end, the D/A chip is output in two paths, the first output end of the D/A chip is connected with a 10V1 interface of the first voltage amplifying circuit, the signal output end of the first voltage amplifying circuit 10 is in electric signal connection with the signal input end of the first constant current circuit 11, the signal output end of the first constant current circuit 11 is in electric signal connection with the signal input end of the stimulation current output circuit 12, the second output end of the D/A chip is in electric signal connection with a 14V2 port of the second voltage amplifying circuit, the signal output end of the second voltage amplifying circuit 14 is in electric signal connection with the signal input end of the second constant current circuit 15, and the signal output end of the second constant current circuit 15 is in electric signal connection with the signal input; a first amplifier U1 is arranged in the first voltage amplifying circuit 10, a triode Q3 is arranged in the first constant current circuit 11, a positive phase input end port V1 of the first amplifier U1 is connected with a first output end of a D/A chip, a negative phase input end of the first amplifier U1 is connected with an emitting set of the triode Q2, an output end of the first amplifier U1 is connected with a base of the triode Q3, a collector of the triode Q3 is electrically connected with a signal input end of the stimulation current output circuit 12, a second amplifier U2 is arranged in the second voltage amplifying circuit 14, a triode Q4 is arranged in the second constant current circuit 15, a positive phase input end of the second amplifier U2 is connected with a second output end of the D/A chip, a negative phase input end of the second amplifier U2 is connected with an emitting set of the triode Q4, an output end of the second amplifier U2 is connected with a base of the triode Q4, and a collector of the; the common connection point a of the common connection point of the inverting input end of the first amplifier U1 and the emitting set of the triode Q3 and the inverting input end of the second amplifier U2 and the common connection point of the emitting set of the triode Q4 and the emitting set of the Q4 is connected with a sampling resistor R11 at the point a.
The working principle is as follows:
In the utility model, the model of the single chip microcomputer is STC12C5410AD, the model of the D/A chip is DAC8532, the model of the Bluetooth module adopts HC-06, the STC12C5410AD single chip microcomputer uses UART serial port to connect with HC-06 Bluetooth module, the mobile phone APP inputs waveform, frequency, pulse width, gap time and maximum stimulation current parameter to the STC12C5410AD single chip microcomputer through HC-06 Bluetooth module, the STC12C5410AD single chip microcomputer transmits parameter data and receives, the stimulation waveform is output through DAC8532D/A chip, DAC8532 is 16-bit double-channel serial control digital-analog conversion chip, the maximum data input clock frequency can reach 30MHz, the set-up time is 10 muS, the single chip microcomputer realizes the function of D/A conversion through SCLK, DIN and SYNC three pins of using three I/O port control chips, the input shift register of DAC8532 is 24-bit register composed of 8 control bits (DB16-DB23) and 16 data bits (DB0-DB15), under the condition of meeting the writing time sequence, different data are written into 8 control bits and 16 data bits respectively, so that the DAC8532 can select different ports (V1 or V2) to output different voltage values, and two voltage output ends of the DAC8532 are connected to the in-phase amplifying circuit respectively.
an optical isolator OC is used between the switch control circuit and the STC12C5410AD single chip microcomputer to realize the electrical isolation of the control circuit and the switch circuit, the circuits on two sides in fig. 6 are completely symmetrical, fig. 5 is a schematic diagram of the structure of the switch control circuit in fig. 6, when the STC12C5410AD single chip microcomputer interface 2 outputs a low level, the STC12C5410AD single chip microcomputer interface 1 outputs a high level, the NPN triode Q5 is turned on, the PNP triode Q7 is turned on, the triode Q6 and the triode Q8 are turned off, so that the first switch control circuit 9 outputs, the second switch control circuit 13 is turned off, when the STC12C5410AD single chip microcomputer interface 2 outputs a high level, the STC12C5410AD single chip microcomputer interface 1 outputs a low level, the NPN triode Q6 is turned on, the PNP triode Q8 is turned on, the triode Q5 and the triode Q7 are turned off, so that the first switch control circuit 9 is turned off, and the second switch control circuit.
The resistance of the skin tissue of different parts of the human body is different, the resistance of the skin tissue of the same part is different due to different distances between stimulation electrodes, in order to ensure that the stimulation current is kept at a stable level when the resistance of the stimulation part is changed, a constant current circuit is introduced, as shown in figure 6, R4 is used for replacing the resistance of the target tissue of the human body in the figure, a first constant current circuit 11 and a second constant current circuit 15 which are symmetrical are formed by a DAC8532D/A chip double-channel output end V1 and V2, a first amplification voltage circuit 10, a second voltage amplification circuit 14, an NPN triode Q3 and a triode Q4, negative feedback regulation is carried out through the resistance on a sampling resistor R11, a DAC8532D/A chip V1 end outputs a voltage signal, a V2 end does not output voltage, the triode Q3 is conducted at the moment, a triode Q4 is cut off, the first constant current circuit 11 of the circuit shown in figure 6 is conducted, and corresponds to a C54 5410AD interface 2 to, the interface 1 outputs low level, the second switch control circuit 13 outputs, the first switch control circuit 9 is cut off, and the low level flows through the sampling resistor R11
I11＝V1/R11；
since the beta value of the transistor Q3 is large, the collector current is approximately equal to the emitter current, and the intensity of the current applied to the human tissue is approximately the same as the intensity of the current flowing through the resistor R11, i.e., the transistor Q3 has a large beta value, and the current is approximately equal to the emitter current
I4＝I11＝V1/R11；
The voltage signal is output from the DAC8532D/A chip V2 end, no voltage is output from the V1 end, the triode Q4 is conducted at the moment, the triode Q3 is cut off, the second constant current circuit 15 of the circuit shown in figure 6 is conducted, the high level is output corresponding to the STC12C5410AD single chip microcomputer interface 1, the low level is output from the interface 2, the first switch control circuit 9 is output, the second switch control circuit 13 is cut off, and the direction of the current flowing through the human body in the process is opposite to the direction of the current flowing through the human body.
in the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above, only be the concrete implementation of the preferred embodiment of the utility model, but the scope of protection of the utility model is not limited to this, and any technical personnel familiar with this technical field are in the technical scope of the utility model discloses, according to the technical scheme of the utility model and the utility model concept equivalence substitution or change, all should be covered within the scope of protection of the utility model.
Claims (8)
1. a neuromuscular stimulator characterized by: including switch, PCB board installation room, rubber epidermis, stimulating electrode, the leading-in recess of medicine, soft viscose layer, wherein, the switch downside sets up PCB board installation room, PCB installation room with switch signal of telecommunication connects, PCB installation room upside sets up the rubber epidermis, PCB installation room downside sets up stimulating electrode, stimulating electrode middle part sets up the leading-in recess of medicine, stimulating electrode downside sets up soft viscose layer.
2. A neuromuscular stimulator as claimed in claim 1, wherein: the PCB mounting chamber is provided with a PCB, the PCB is provided with a Bluetooth module, a singlechip, a DA conversion module, a voltage amplification module, a constant current circuit module, a power supply module, a switch control module and a stimulation current output module, wherein the Bluetooth module is in electric signal connection with a UART port of the singlechip, a signal output end of the singlechip is in electric signal connection with a signal input end of the switch control module, a signal input end of the switch control module is in electric signal connection with a signal output end of the power supply module, a signal output end of the switch control module is in electric signal connection with a signal input end of the stimulation current output module, a signal output end of the singlechip is in electric signal connection with a signal input end of the DA conversion module, a signal output end of the DA conversion module is in electric signal connection with a signal input end of the voltage amplification module, and a signal, the signal output end of the constant current circuit module is electrically connected with the signal input end of the stimulation current output module, and the output end of the stimulation current output module is electrically connected with the stimulation electrode.
3. A neuromuscular stimulator as claimed in claim 2, wherein: and an optical frequency isolator for realizing the electrical isolation of the control circuit and the switch circuit is arranged between the signal output end of the single chip microcomputer and the signal input end of the switch control module.
4. A neuromuscular stimulator as claimed in claim 3, wherein: the switch control module comprises an optical frequency isolator OC, a resistor R1, a triode Q1, a resistor R2, a resistor R3 and a triode Q2, wherein the optical frequency isolator OC signal output end passes through the resistor R1 and the base of the triode Q1 are connected, the emitting set of the triode Q1 is grounded, the collector of the triode Q1 passes through the resistor R2 and the base of the triode Q2 are connected, the emitting set of the triode Q2 passes through the resistor R3 and the base of the triode Q2 are directly connected, and the collector of the triode Q2 is an output port.
5. a neuromuscular stimulator as claimed in claim 2, wherein: the PCB board comprises a first switch control circuit, a first voltage amplifying circuit, a first constant current circuit, a stimulating current output circuit, a second switch control circuit, a second voltage amplifying circuit, a second constant current circuit, a single chip microcomputer and a D/A chip for converting current from direct current to alternating current, the single chip microcomputer outputs three signals, the single chip microcomputer output interface 1 is in electric signal connection with the first switch control circuit con1 interface, the signal output end of the first switch control circuit is in electric signal connection with the signal input end of the stimulating current output circuit, the single chip microcomputer output interface 2 is in electric signal connection with the second switch control circuit con2 interface, the signal output end of the second switch control circuit is in electric signal connection with the signal input end of the stimulating current output circuit, and the single chip microcomputer output interface 3 is in electric signal connection with the signal input end of the D/A chip, the D/A chip is output in two paths, a first output end of the D/A chip is connected with a V1 interface of the first voltage amplifying circuit, a signal output end of the first voltage amplifying circuit is in electric signal connection with a signal input end of the first constant current circuit, a signal output end of the first constant current circuit is in electric signal connection with a signal input end of the stimulating current output circuit, a second output end of the D/A chip is in electric signal connection with a V2 port of the second voltage amplifying circuit, a signal output end of the second voltage amplifying circuit is in electric signal connection with a signal input end of the second constant current circuit, and a signal output end of the second constant current circuit is in electric signal connection with a signal input end of the stimulating current output circuit.
6. A neuromuscular stimulator as claimed in claim 5, wherein: a first amplifier U1 is arranged in the first voltage amplifying circuit, a triode Q3 is arranged in the first constant current circuit, a positive phase input end port V1 of the first amplifier U1 is connected with a first output end of the D/A chip, an inverse phase input end of the first amplifier U1 is connected with an emission set of the triode Q2, an output end of the first amplifier U1 is connected with a base electrode of the triode Q3, a collector electrode of the triode Q3 is electrically connected with a signal input end of the stimulation current output circuit, a second amplifier U2 is arranged in the second voltage amplifying circuit, a triode Q4 is arranged in the second constant current circuit, a positive phase input end of the second amplifier U2 is connected with a second output end of the D/A chip, an inverse phase input end of the second amplifier U2 is connected with the emission set of the triode Q4, and an output end of the second amplifier U2 is connected with the base electrode of the triode Q4, the collector of the triode Q4 is electrically connected with the signal input end of the stimulation current output circuit.
7. A neuromuscular stimulator as claimed in claim 1, wherein: PCB board installation room rear side is provided with and is used for people to laminate the alignment mark line when muscle, PCB board installation room right part is provided with the interface that charges.
8. A neuromuscular stimulator according to claim 6, characterized in that: the common connection point of the inverting input end of the first amplifier U1 and the common connection point of the emission set of the triode Q3, the inverting input end of the second amplifier U2 and the common connection point of the emission set of the triode Q4 and the emission set of the second amplifier U4 is a common access point a, and a sampling resistor R11 is arranged at the point a.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822060092.9U CN209790616U (en) | 2018-12-06 | 2018-12-06 | Neuromuscular stimulator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822060092.9U CN209790616U (en) | 2018-12-06 | 2018-12-06 | Neuromuscular stimulator |
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| CN209790616U true CN209790616U (en) | 2019-12-17 |
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| CN201822060092.9U Expired - Fee Related CN209790616U (en) | 2018-12-06 | 2018-12-06 | Neuromuscular stimulator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI777339B (en) * | 2020-12-28 | 2022-09-11 | 財團法人工業技術研究院 | Electrical stimulation device and method |
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2018
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI777339B (en) * | 2020-12-28 | 2022-09-11 | 財團法人工業技術研究院 | Electrical stimulation device and method |
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