CN211068764U - Low-frequency resonance bioelectricity therapeutic instrument - Google Patents

Abstract

The utility model provides a low-frequency resonance bioelectricity therapeutic apparatus, which comprises a power module consisting of a direct-current power supply and a main controller module; the output end of the main controller module is connected with a driving module; the output end of the driving module is connected with a filtering and voltage transforming module for outputting sine waves; and the output end of the filtering and voltage transforming module is connected with a sampling module for finishing the control of output current. The sinusoidal wave signal is generated by adopting an SPWM mode, the output waveform is smoother than the waveform generated by adopting an analog oscillation circuit, the frequency and the amplitude are controlled more accurately, and a signal similar to human bioelectricity frequency 49.902Hz can be output, so that the resonance effect is achieved to go deep into the focus of a patient; the lithium battery is adopted for power supply, so that the dangerous power utilization safety problems of short circuit, electric leakage, surge, thunder and lightning and the like caused by direct introduction of AC220V commercial power into the instrument are avoided.

Description

Low-frequency resonance bioelectricity therapeutic instrument

Technical Field

The utility model relates to the field of medical equipment and health care, especially, relate to a low frequency resonance bioelectricity therapeutic instrument.

Background

In the current medical health-care market, all electric therapeutic apparatuses take output energy as a therapeutic means, and electrodes are directly placed on a patient for treatment. The theoretical basis for these devices is local stimulation. Clinical experiments prove that: the instantaneous high-voltage pulse can cause patients to have obvious tingling and pain, but the energy is difficult to go deep into the focus and is difficult to spread along the collective meridian, and the frequency is in the medium frequency, so the inherent bioelectricity of the body can not be recovered.

In the prior art, chinese patent application No. CN200610150631.7 reports a low-frequency resonance bioelectricity therapeutic apparatus, which inputs 220V mains supply and simulates a sine wave signal generated by an oscillator circuit to achieve the purpose of physical therapy or beauty, but due to the adoption of an analog circuit, the waveform is rough, the frequency and amplitude cannot be accurately controlled, the energy density is not uniform, the output signal is not similar to the bioelectricity frequency of a human body, and the like, as shown in fig. 3. For the above reasons, there is a need for a novel low-frequency resonant bioelectric therapeutic apparatus designed to have advantages of more accurate output signal, more uniform and safe energy density, and the like.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the utility model provides a low-frequency resonance bioelectricity therapeutic apparatus, which adopts the SPWM mode to generate sine wave signals, the output waveform is smoother than the waveform generated by adopting an analog oscillation circuit, the frequency and the amplitude are controlled more accurately, and the signal similar to human bioelectricity frequency 49.902Hz can be output, thereby achieving the resonance effect to go deep into the focus of a patient; the lithium battery is adopted for power supply, so that the dangerous power utilization safety problems of short circuit, electric leakage, surge, thunder and lightning and the like caused by direct introduction of AC220V commercial power into the instrument are avoided.

In order to achieve the above object, the present invention provides the following specific technical solutions:

a low-frequency resonance bioelectricity therapeutic apparatus comprises a power supply module and a main controller module, wherein the power supply module comprises a direct-current power supply; the output end of the main controller module is connected with a driving module; the output end of the driving module is connected with a filtering and voltage transforming module for outputting sine waves; and the output end of the filtering and voltage transforming module is connected with a sampling module for finishing the control of output current.

Preferably, the main controller module is further connected to the electric quantity detection module, the alarm module, the printing module, the display module, the remote control receiving module, the operation module, and the data storage module, respectively.

Preferably, the main controller module comprises a single chip microcomputer circuit, and the single chip microcomputer circuit is used for generating the SPWM sine wave signal with the frequency and the amplitude required by a user.

Preferably, the power module includes DC12.6V lithium power, DC12.6V power adapter, DC15V boost circuit, DC5V power, DC3.3V power and DC5V isolated power; DC12.6V lithium power supply be used for doing DC15V boost circuit and DC5V power supply, DC15V boost circuit does the drive module power supply, the DC5V power does the print module the display module the remote control receiving module DC3.3V power and DC5V keep apart the power supply, the DC3.3V power does the main control unit module the data storage module with the operation module power supply, DC5V keeps apart the power and does the power supply of sampling module.

Preferably, the driving module comprises two groups of half-bridge driving circuits, and is used for driving the power bridge by the SPWM sine wave signal generated by the main controller through the driving circuits.

Preferably, the filtering and transforming module includes a filter circuit and a transformer, so that the input PWM signal is changed into a sine wave by the filter and is output after being transformed by the transformer.

Preferably, the sampling module comprises an isolated alternating current sampling circuit formed by an isolation amplifier to complete the control of the output current.

Preferably, the electric quantity detection module comprises a resistance voltage division circuit used for measuring the electric quantity of the DC12.6V lithium power supply in real time, the data storage module comprises a real-time output current data storage circuit composed of a memory and used for storing current data in each output process, and the alarm module comprises a state indication alarm circuit composed of a L ED indicator light and a buzzer and used for indicating the state of the circuit in operation and sending out an alarm signal when a problem occurs.

Preferably, the printing module comprises a printer interface circuit externally connected with a printer; the display module comprises a liquid crystal display screen interface circuit externally connected with the touch liquid crystal display screen.

Preferably, the operation module comprises a keyboard interface circuit for externally connecting a keyboard; the remote control receiving module comprises a remote control receiving circuit consisting of a learning type differential receiving module and a level conversion chip.

The utility model has the advantages that the low-frequency resonance bioelectricity therapeutic apparatus is provided, the SPWM mode is adopted to generate sine wave signals, the output waveform is smoother than the waveform generated by the analog oscillation circuit, the frequency and the amplitude are controlled more accurately, and the signal similar to the human bioelectricity frequency 49.902Hz can be output, thereby achieving the resonance effect to go deep into the focus of a patient; the lithium battery is adopted for power supply, so that the dangerous power utilization safety problems of short circuit, electric leakage, surge, thunder and lightning and the like caused by direct introduction of AC220V commercial power into the instrument are avoided.

Drawings

FIG. 1 is a block diagram of the circuit structure of the present invention

FIG. 2 is a schematic diagram of the sinusoidal signal outputted in the technical solution of the present invention

Fig. 3 is a schematic diagram of a sinusoidal signal output in the prior art.

Wherein, 1-power module; 2-a drive module; 3-a filtering transformation module; 4-a sampling module; 5-a data storage module; 6-electric quantity detection module; 7-an alarm module; 8-a printing module; 9-a display module; 10-a main controller module; 11-an operation module; 12-remote control receiving module.

Detailed Description

As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. The description which follows is a preferred embodiment of the present application, but is made for the purpose of illustrating the general principles of the application and not for the purpose of limiting the scope of the application. The protection scope of the present application shall be subject to the definitions of the appended claims.

Referring to fig. 1-3, the utility model discloses a low-frequency resonance bioelectricity therapeutic apparatus, which comprises a power module 1 and a main controller module 10, wherein the power module 1 comprises a direct current power supply; the output end of the main controller module 10 is connected with a driving module 2; the output end of the driving module 2 is connected with a filtering and voltage transforming module 3 for outputting sine waves; the output end of the filtering and voltage transforming module 3 is connected with a sampling module 4 for finishing the control of output current.

Further, the main controller module 10 is connected to the electric quantity detection module 6, the alarm module 7, the printing module 8, the display module 9, the remote control receiving module 12, the operation module 11, and the data storage module 5, respectively.

Further, the main controller module 10 includes a single chip microcomputer circuit composed of an STM32F103RCT6 chip, and the single chip microcomputer circuit is used for generating an SPWM sine wave signal with frequency and amplitude required by a user; meanwhile, the following functions are also completed: (1) data interaction between the touch screen and the display module completes display interface switching and touch instruction analysis; (2) the ADC measures the electric quantity of the power supply module; (3) analyzing signals of the display module, the remote control receiving module and the operation module; (4) the ADC measures the output current in real time, judges whether the current output in real time exceeds a set range according to a current interval set by a user, immediately cuts off the output if the current output exceeds the set range, and otherwise, normally outputs the current; (5) storing the current data in the output process in real time and sending the current data to the display module; (6) after finishing output (the user sets time to count down and finishes, presses an end button halfway and stops output when the output current exceeds a set interval), controlling a printing module to print the output historical current data according to the printing state, namely the printing type, set by the user; (7) and controlling the alarm module and the display module to complete indication and alarm of various states.

Further, the power module 1 includes DC12.6V lithium power source, DC12.6V power adapter, DC15V boost circuit composed of L M2577S-ADJ chip, DC5V power source composed of L M2576-5.0 chip, DC3.3V power source composed of SPX3819M 5-L-3.3 chip, and DC5V isolated power source composed of B0505S-1W chip, the DC12.6V lithium power source is used for supplying power to the DC15V boost circuit and the DC5V power source, the DC15V power source is used for supplying power to the driving module 2, the DC5V power source is used for supplying power to the printing module 8, the display module 9, the remote control receiving module 12, the DC3.3V power source, and the DC5V isolated power source, the DC3.3V power source is used for supplying power to the main controller module 10, the data storage module 5, and the operation module 11, and the DC5V isolated power source is used for supplying power to the sampling module 4.

Further, the driving module 2 is respectively composed of two sets of IR2104 chips driving a half-bridge driving circuit composed of two N-channel power chips IRFR 024N. The bridge driving circuit mainly drives the power bridge through the SPWM control waveform generated by the singlechip through the driving circuit to achieve the purpose of inversion.

Furthermore, the filtering and transforming module 3 includes a filter circuit and a transformer, the output filter circuit composed of L1, L2, C3 and C4 can directly convert the output PWM signal into a sine wave through the filter, and the sine wave is output after the transformation is completed by the transformer T1.

Further, the sampling module 4 is an isolated alternating current sampling circuit formed by an AMC1200BDWVR chip to complete output current control.

Furthermore, the electric quantity detection module 6 comprises a resistance voltage division circuit used for measuring the electric quantity of the DC12.6V lithium power supply in real time, the data storage module 5 comprises a real-time output current data storage circuit composed of an MX 25L 4008 chip and used for storing current data in each output process, and the alarm module 7 comprises a state indication alarm circuit composed of a L ED indicator and a buzzer and used for indicating the working state of the circuit and sending out an alarm signal when a problem occurs.

Further, the printing module 8 comprises a printer interface circuit externally connected with a QR20 thermal printer; the display module 9 comprises a liquid crystal display screen interface circuit externally connected with a DMT80600C 080-07W touch liquid crystal display screen.

Furthermore, the operation module 11 comprises a keyboard interface circuit for connecting an external keyboard to input a corresponding instruction, and the remote control receiving module 12 is composed of a 433M learning type differential receiving module and an SN 74L VC2445PW level conversion chip and is used for receiving an operation instruction sent by a remote controller.

The utility model discloses still include two red two black 4 electrode slices. Before the device is used, the two red, two black and 4 electrode plates are soaked by water and are fixed at corresponding acupuncture points of a patient according to the requirement of the patient; and then selecting a working frequency, a working time and an output current interval on the touch liquid crystal display screen according to the symptom requirement of the patient, wherein the maximum value is 0-30 mA. According to the diseased part condition of the patient, the instrument is started by touching a liquid crystal display screen or a start/stop button of a remote controller, and the output voltage intensity is adjusted by an intensity control button. And the liquid crystal display screen displays the curve and data of the actual current value in the using process of the instrument.

If the skin of the patient is too dry, the operation can be started after the hands of the masseur are sprayed with water for moistening in advance. The magnitude of the output current depends on the level of the output voltage a; b, the size and the strength of the contact area between the patient and the electrode plate.

The current adjustment in a large range is completed by touching an intensity control button of a liquid crystal display or a remote controller. The output current of sensitive parts such as the head is not easy to be too large and generally does not exceed 5 mA. In this case, the current output interval value can be set to 0-5mA for safety. When the output current is larger than 5mA, the protection circuit can immediately close the output, the instrument can send out an alarm indication, and the instrument returns to the initial state. When the instrument is used, the instrument returns to an initial state if the input current exceeds a set interval, the electrode plate is separated from a patient, the output current exceeds 10 seconds and is less than 1mA, or the instrument stops working through a touch liquid crystal display or a start/stop button of a remote controller.

The machine starts a countdown based on the patient set hours of operation, e.g., the time-to-time machine will print the current data just during the treatment based on the printer status set by the patient. After printing is completed, the instrument returns to the initial state.

Compared with the prior art, the beneficial effect of this application lies in:

(1) the lithium battery and the power adapter are used for supplying power, so that the power utilization safety problems of dangers such as circuit short circuit, electric leakage, surge, thunder and lightning caused by direct introduction of AC220V commercial power into the instrument in the prior art are avoided. Meanwhile, the use scene of the instrument is increased due to the adoption of the lithium battery for power supply. Such as emergency treatment in outdoor power-off condition, emergency treatment in power failure, etc.

(2) The remote controller is added for controlling operation, the patient can operate according to self conditions, the whole-process intervention of a technician and medical personnel is not needed, the operability of the instrument is enhanced, and the utilization rate of the instrument is improved.

(3) The SPWM mode is adopted to generate sine wave signals, the output waveforms are smoother than waveforms (shown in figure 3) generated by the analog oscillation circuit and more accurate in frequency and amplitude control, the output energy density of the generated sine wave signals is more uniform, and as shown in figure 2, signals similar to human body bioelectricity frequency 49.902Hz can be output by the device, so that the resonance effect is achieved, and the focus of a patient can be deepened.

(4) The thermal printer is configured, so that data in the treatment process can be printed in a matrix or curve form, and patients and medical staff can know the treatment condition of the patients in time.

(5) And the display part adopts a touch liquid crystal display screen, so that the display content is enriched, the physical keys are reduced, and the operability of the instrument is improved. Just let patient or medical personnel know the service rule and the taboo explanation of instrument through "touch-control liquid crystal display" when the start, improved the control of instrument use risk. Meanwhile, instrument operation demonstration is added on the touch liquid crystal display screen in a picture mode, so that a patient or medical staff can know the use and operation of the instrument without a specification. In the use process, the instrument can visually display real-time treatment data in a curve and numerical form through the touch liquid crystal display screen, so that a patient or medical staff can more visually know the treatment condition in real time.

(6) And an output open circuit protection function is added, namely: when the output current of the instrument is less than 1mA within 10S after the instrument is started or the electrode plate falls off from the body of a patient in the treatment process, the instrument stops working immediately and gives an alarm prompt. The function solves the problem that the electrode slice is not fixed well when a patient or medical staff operates the instrument, and the electrode slice is instantly output with the body of the patient again after the intensity of the instrument is adjusted to be too large, so that the high-voltage current is harmful to the human body.

(7) The device adopts more than 90% of digital circuits, separates grounding signals under various voltages, adds a protection circuit at each input and output end, and compared with an analog amplification circuit, the device has the advantages that the device generates a large amount of heat and works unstably due to long working time and use environment, and the device fundamentally solves the problem of injury to patients after faults occur among various circuits. Meanwhile, the digital circuit is convenient for real-time monitoring and management, so that the working efficiency of the device is improved.

The foregoing description shows and describes several preferred embodiments of the present application, but as aforementioned, it is to be understood that the application is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the application as described herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the application, which is to be protected by the claims appended hereto.

Claims (10)

1. A low-frequency resonance bioelectricity therapeutic apparatus comprises a power supply module and a main controller module, and is characterized in that the power supply module comprises a direct-current power supply; the output end of the main controller module is connected with a driving module; the output end of the driving module is connected with a filtering and voltage transforming module for outputting sine waves; and the output end of the filtering and voltage transforming module is connected with a sampling module for finishing the control of output current.

2. The low-frequency resonance bioelectrical therapeutic apparatus according to claim 1, wherein the main controller module is further connected to the electric quantity detection module, the alarm module, the printing module, the display module, the remote control receiving module, the operation module, and the data storage module, respectively.

3. The low frequency resonant bio-electric therapeutic device of claim 2 wherein said main controller module comprises a single chip microcomputer circuit for generating a SPWM sine wave signal of a user desired frequency, amplitude.

4. The low frequency resonance bioelectric therapeutic instrument according to claim 3, wherein said power supply module comprises DC12.6V lithium power supply, DC12.6V power adapter, DC15V voltage boosting circuit, DC5V power supply, DC3.3V power supply and DC5V isolated power supply; DC12.6V lithium power supply be used for doing DC15V boost circuit and DC5V power supply, DC15V boost circuit does the drive module power supply, the DC5V power does the print module the display module the remote control receiving module DC3.3V power and DC5V keep apart the power supply, the DC3.3V power does the main control unit module the data storage module with the operation module power supply, DC5V keeps apart the power and does the power supply of sampling module.

5. The low frequency resonant bio-electric therapeutic apparatus of claim 4, wherein said driving module comprises two sets of half-bridge driving circuits for driving the power bridge with the SPWM sine wave signal generated by said main controller via said driving circuits.

6. The low frequency resonance bioelectrical therapeutic apparatus according to claim 5, wherein said filter transforming module comprises a filter circuit and a transformer, so that the input PWM signal is transformed into sine wave by the filter and then outputted after being transformed by the transformer.

7. The low frequency resonant bio-electric therapeutic apparatus of claim 6 wherein said sampling module comprises an isolated AC current sampling circuit consisting of an isolated amplifier to complete the control of the output current.

8. The low frequency resonance bioelectrical therapeutic apparatus according to claim 7, wherein said charge detecting module comprises a resistance voltage divider circuit for measuring the charge of said DC12.6V lithium power source in real time, said data storage module comprises a real time output current data storage circuit comprising a memory for storing current data during each output, and said alarm module comprises a status indication alarm circuit comprising a L ED indicator light and a buzzer for indicating the status of the circuit during operation and for emitting an alarm signal when a problem occurs.

9. The low frequency resonance bioelectrical therapeutic apparatus according to claim 8, wherein said printing module comprises a printer interface circuit externally connected to a printer; the display module comprises a liquid crystal display screen interface circuit externally connected with the touch liquid crystal display screen.

10. The low frequency resonance bioelectrical therapeutic apparatus according to claim 9, wherein said operation module comprises a keyboard interface circuit for externally connecting a keyboard; the remote control receiving module comprises a remote control receiving circuit consisting of a learning type differential receiving module and a level conversion chip.

Images