A laser acupoint treatment pen with electrical stimulation function

Abstract

The present invention discloses a laser acupoint therapeutic pen with an electrical stimulation function. The pen determines whether a therapeutic electrode contacts a human body through intermittent tiny detection pulse signals, a first low-frequency pulse signal and a second low-frequency pulse signal, in cooperation with a circuit board to collect voltage change amplitude. When the pen does not contact a human body, it can enter a standby or shutdown mode, thereby saving energy consumption, improving battery life and improving safety. On the other hand, a microcontroller automatically switches working modes according to the human body contact status. For the comfort and safety of users, the pen first generates intermittent tiny detection pulse signals that will not cause human discomfort to determine whether the pen contacts a human body. When the pen contacts a human body, it determines whether the therapeutic electrode contacts an acupoint. Only when it is confirmed that the therapeutic electrode contacts an acupoint will the pen enter a normal physical therapy state, thereby ensuring the accuracy and intelligence of acupoint finding, so that acupoint finding no longer depends on the user's human body acupoint recognition ability.

Description

Technical Field

[0001] The invention relates to the technical field of physical therapy, and in particular to a laser acupoint treatment pen with an electrical stimulation function. Background Art

[0002] Laser therapy, also known as "photobiomodulation", refers to the use of light sources of specific wavelengths to irradiate patients to achieve therapeutic effects, including shortening healing time, reducing pain, promoting microcirculation, and reducing swelling and postoperative exudation. Laser therapy is also known as a treatment option that does not require drugs or surgery.

[0003] Electric pulse therapy refers to a therapy method produced by the arrangement and combination of electric pulses with different frequencies, different waveforms, different pulse widths, pulse intervals, durations and other parameters. By adjusting different parameters, it can produce techniques similar to acupuncture and massage, achieving the effect of treating cervical spondylosis, periarthritis of the shoulder, bone hyperplasia and other diseases.

[0004] There are many independent application cases of laser therapy and electric pulse therapy. For example, the invention patent application with application number 2014102551530 discloses a pen-type oral laser therapy device, which is a technology that uses laser to treat oral diseases; for example, the invention patent application with application number 2015100875135 discloses a low-frequency electronic pulse therapy device, which aims to introduce low-frequency current into the human body through a conductive cap to increase blood circulation and thus play an analgesic role; for example, the invention patent application with application number 2016101566608 discloses a pulsed high-voltage acupuncture therapy device, which adopts the principle of instantaneous high voltage discharge to the ground, and directly uses the electric charge released by a small dose of high voltage on the acupuncture points of the human body to achieve the purpose of non-invasive treatment of diseases.

[0005] From the above application cases, it is not difficult to see that the application methods and effects of laser therapy and electric pulse therapy are extensive, and it is known that these two physical therapies are important in the medical field. However, it is also not difficult to understand that the effects of the two alone are still far less than the combination of the two, and the application limitations are relatively large.

[0006] For example, the invention patent application with application number 2014104155891 discloses a wearable Bluetooth APP-controlled acupoint detection and photoelectric stimulation pain patch. This invention patent application aims to control the low-frequency electric pulse module and the laser treatment module through an APP wireless mobile phone to stimulate the acupoints of the human body, find the location of the acupoints through the acupoint detection module, and the laser output safety module automatically controls the laser safety output. It uses Bluetooth to connect to a smartphone, and the mobile phone APP software platform sets the dosage of acupoint stimulation, such as acupoint stimulation power, stimulation frequency, and stimulation time.

[0007] The pain patch published in 2014104155891 can find the location of acupoints through the acupoint detection module. For users who are not familiar with acupoints, it is relatively convenient to use. The principle is not clearly explained. From the description in paragraph

[0048] of its specification: "The shell is provided with an acupoint detection module and an electrode that forms a closed loop with the human body electrode contact point, and the acupoint point is accurately found through the electrode contact point", it is not difficult to know that the acupoint detection module in the pain patch detects acupoints through the human body electrode contact point 23 (for its specific location and setting method, please refer to Figure 1 ), this acupoint detection method relies on the user's ability to recognize acupoints of the human body. Once the distance from the acupoint is far, the user needs to peel off and re-stick it repeatedly to accurately find the acupoint. The operation is more troublesome and has great limitations.

[0008] This shows that the prior art still needs to be improved and perfected. Summary of the invention

[0009] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a laser acupoint therapy pen with electrical stimulation function, aiming to solve the problem that the acupoint detection method of the pain patch in the prior art depends on the user's human acupoint recognition ability. Once the distance from the acupoint is far when it is first attached, the user needs to repeatedly peel off and re-attach it to accurately find the acupoint, which is cumbersome to operate and has great limitations in use.

[0010] The technical solution of the present invention is as follows:

[0011] A laser acupoint treatment pen with electrical stimulation function, comprising:

[0012] A treatment electrode, wherein the treatment electrode is used to transmit a pulse signal;

[0013] A microcontroller, wherein the microcontroller is used to generate intermittent tiny detection pulse signals, and to determine whether the treatment electrode contacts the human body by collecting the voltage change amplitude through the circuit board. If the judgment result is yes, the generation of intermittent tiny detection pulse signals is stopped, and a first low-frequency pulse signal is generated instead and the laser output module is controlled to output laser. The voltage change amplitude is collected through the circuit board to determine whether the treatment electrode contacts the acupuncture point. If the judgment result is yes, the generation of the first low-frequency pulse signal is stopped and a second low-frequency pulse signal greater than the first low-frequency pulse signal is generated instead. The voltage change amplitude is continuously collected through the circuit board to determine whether the treatment electrode contacts the human body. If the judgment result is no, the laser acupuncture point treatment pen is controlled to enter the standby / off mode.

[0014] The effect of the above scheme is that: the laser acupoint treatment pen with electrical stimulation function provided by the present invention can determine whether the treatment electrode contacts the human body through intermittent tiny detection pulse signals, the first low-frequency pulse signal and the second low-frequency pulse signal, in conjunction with the circuit board to collect the voltage change amplitude. When it does not contact the human body, it can enter the standby or shutdown mode, saving energy consumption and improving battery life. More importantly, the laser acupoint treatment pen will not release high-power current in a non-physical therapy state to cause discomfort to the human body, nor will it release laser to irradiate the user's eyes and other vulnerable parts to cause damage, thereby improving safety. On the other hand, the microcontroller will automatically switch the working mode according to the human body contact state. When it is just turned on or just out of the standby state, for the comfort and safety of the user, it will generate intermittent tiny detection pulse signals that will not cause discomfort to the human body to determine whether it contacts the human body. When it contacts the human body, it will determine whether the treatment electrode contacts the acupoint. Only when it is confirmed that the treatment electrode contacts the acupoint will it enter the normal physical therapy state, step by step, while ensuring the safety of use, the accuracy and intelligence of acupoint search are guaranteed, so that acupoint search no longer depends on the user's human acupoint recognition ability.

[0015] In a further preferred embodiment, a pulse sampling filter circuit is provided on the circuit board, and the pulse sampling filter circuit is used to filter out clutter of the low-frequency pulse signal after passing through the human body circuit.

[0016] The effect of the above scheme is that low-frequency pulse signals are easily interfered by clutter when passing through the human body circuit, which will affect the purity of the signal. The pulse sampling filter circuit provided in the present invention can effectively reduce the interference of clutter through filtering and attenuation, ensure that the signal is clearer and more stable, improve the quality of the low-frequency pulse signal, and thus improve the accuracy of the ADC voltage amplitude judgment result; moreover, due to the effect of the pulse sampling filter circuit, when the low-frequency pulse signal is input into the human tissue through the treatment electrode, it is more focused on the target treatment area, reducing the influence of external interference factors on the treatment effect, improving the accuracy and effectiveness of the treatment, and making the improved low-frequency pulse signal more comfortable and safe, thereby improving the user experience during the treatment process.

[0017] In a further preferred embodiment, the pulse sampling filter circuit includes: a third resistor connected to one end of the first resistor, a fourth resistor connected to the other end of the first resistor, a first capacitor and a second capacitor, the first capacitor is connected to the third resistor and grounded to form a first low-pass filter; the second capacitor is connected to the fourth resistor and grounded to form a second low-pass filter.

[0018] The effect of the above scheme is that the combined use of the first low-pass filter and the second low-pass filter, relative to a single low-pass filter, enables the pulse sampling filter circuit to more effectively reduce the clutter interference in the low-frequency pulse signal. The two have the same function and can accurately filter out high-frequency components to ensure that the signal is cleaner and purer; that is, the structural design of the dual low-pass filter improves the clutter filtering performance of the pulse sampling filter circuit and further improves the signal purity.

[0019] In a further preferred embodiment, a differential operational amplifier circuit for amplifying the low-frequency pulse signal input by the pulse sampling filter circuit is also provided on the circuit board, and the differential operational amplifier circuit includes: a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a third capacitor, a fourth capacitor and a differential amplifier, the fifth resistor is arranged between the third resistor and the first pin of the differential amplifier, the seventh resistor and the third capacitor are connected in parallel between the first pin and the second pin of the differential amplifier, the sixth resistor is arranged between the fourth resistor and the third pin of the differential amplifier, one end of the eighth resistor is connected between the sixth resistor and the differential amplifier, and the other end is grounded; one end of the fourth capacitor is connected between the second resistor and the sixth resistor to form a parallel branch, and the other end is grounded.

[0020] The effect of the above scheme is that the fifth resistor and the sixth resistor form an input resistor network to receive and are respectively connected to the two input ends of the low-frequency pulse signal, and the two will together constitute a differential input; and the seventh resistor and the third capacitor are connected in parallel to form a third low-pass filter to limit the high-frequency components of the input signal to ensure that only the low-frequency signal passes through. The differential amplifier will control the amplification factor by adjusting the ratio of the feedback resistor (i.e., the eighth resistor) and the input resistor (i.e., the seventh resistor). Through the above configuration, the differential operational amplifier circuit can adjust the amplification factor to ensure that the input signal is sufficiently enhanced before being passed to the subsequent processing stage. For the detection of weak biological electrical signals of the human body, the differential operational amplifier circuit can adapt to the individual differences of users to ensure the accuracy of the detection and judgment results.

[0021] In a further preferred embodiment, a pulse conversion voltage circuit for converting the amplified low-frequency pulse signal into a DC voltage signal is also provided on the circuit board, and the pulse conversion voltage circuit includes: a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a thirteenth resistor, a fifth capacitor, a second transistor and a third transistor; one end of the ninth resistor is connected to the power supply of the microcontroller, and the other end is connected to the collector of the second transistor; the base of the second transistor is connected to the parallel branch formed by the fifth capacitor and the eleventh resistor through the tenth resistor, and the emitter is connected to the collector of the third transistor through the twelfth resistor; the emitter of the third transistor is connected to the second pin of the differential amplifier through the thirteenth resistor.

[0022] The effect of the above scheme is that: in the above setting, the low-frequency pulse signal output by the third transistor controls the conduction and shutdown of the second transistor through the twelfth resistor, and the power supply of the microcontroller converts the charging pulse voltage of the fifth capacitor through the ninth resistor, the second transistor, and the tenth resistor, completing the conversion of the pulse signal to a collectible DC voltage, and utilizing the eleventh resistor connected in parallel with the fifth capacitor to ensure the charging and discharging time of the fifth capacitor, thereby improving the stability, accuracy and adaptability of the signal, making the signal easier to process and analyze, and ensuring the accurate collection and identification of the ADC voltage amplitude by the microcontroller.

[0023] In a further preferred embodiment, the laser acupoint treatment pen further comprises: a substrate and a shell, the circuit board is fixed to the substrate, and clamping grooves are provided on both sides of the shell, and both sides of the substrate are accommodated in the clamping grooves.

[0024] The effect of the above scheme is that the present invention effectively fixes and protects the circuit board by installing the circuit board on the substrate and placing the substrate in the clamping groove of the shell. It can not only prevent the circuit board from being affected by external impact and vibration, but also facilitate the maintenance and replacement of the circuit board, thereby improving the reliability and stability of the laser acupoint therapy pen, making it more suitable for long-term stable operation in actual use.

[0025] In a further preferred embodiment, a supporting protrusion is extended from the inner wall of the shell toward the substrate, two supporting protrusions are provided, and a gap is reserved between the two supporting protrusions.

[0026] The effect of the above scheme is that the setting of the supporting protrusions can prevent the substrate from loosening or shifting during use, thereby protecting the circuit board from interference from the external environment; at the same time, by setting a gap between the two supporting protrusions, the mechanical friction between the substrate and the outer shell can be effectively reduced, making the components of the laser acupuncture therapy pen more flexible and smooth in use.

[0027] In a further preferred embodiment, the laser acupoint treatment pen further comprises: a laser emitting device, the treatment electrode is provided with a light-transmitting hole, and the laser emitted by the laser emitting device is emitted through the light-transmitting hole.

[0028] The effect of the above scheme is that the laser emitted by the laser emitting device can directly irradiate the surface of the human body through the light-transmitting hole on the treatment electrode. When the patient contacts the treatment electrode, electrical stimulation therapy can be achieved and laser irradiation can be performed on the treatment area at the same time, thereby achieving the combined effect of electrotherapy and phototherapy. This combined effect can synergistically promote the treatment effect and improve the application efficiency of the laser acupoint treatment pen in rehabilitation and pain relief.

[0029] A method for judging the human body contact state based on the laser acupoint treatment pen with electrical stimulation function as described above comprises the steps of:

[0030] Generate intermittent tiny detection pulse signals;

[0031] Collecting a voltage change amplitude, and comparing the voltage change amplitude with a first preset threshold value to determine whether the treatment electrode contacts a human body;

[0032] If the judgment result is yes, then stop generating the intermittent tiny detection pulse signal, instead generate the first low-frequency pulse signal and control the laser output module to output laser;

[0033] collecting the voltage change amplitude again to determine whether the treatment electrode contacts the acupuncture point, and comparing the voltage change amplitude with a second preset threshold value to determine whether the treatment electrode contacts the acupuncture point;

[0034] If the judgment result is yes, stop generating the first low-frequency pulse signal and instead generate a second low-frequency pulse signal that is greater than the first low-frequency pulse signal;

[0035] The voltage change amplitude is continuously collected, and it is continuously determined whether the treatment electrode is in contact with the human body. If the determination result is no, the laser acupoint treatment pen is controlled to enter the standby / shutdown mode.

[0036] Compared with the prior art, the laser acupoint therapy pen with electrical stimulation function provided by the present invention can determine whether the treatment electrode contacts the human body through intermittent tiny detection pulse signals, the first low-frequency pulse signal and the second low-frequency pulse signal, in conjunction with the circuit board to collect the voltage change amplitude. When it does not contact the human body, it can enter the standby or shutdown mode, saving energy consumption and improving endurance. More importantly, the laser acupoint therapy pen will not release high-power current in a non-physical therapy state to cause discomfort to the human body, nor will it release laser to irradiate the user's eyes and other vulnerable parts to cause damage, thereby improving safety. On the other hand, the microcontroller will automatically switch the working mode according to the human body contact state. When it is just turned on or just out of the standby state, for the comfort and safety of the user, it will generate intermittent tiny detection pulse signals that will not cause discomfort to the human body to determine whether it contacts the human body. When it contacts the human body, it will determine whether the treatment electrode contacts the acupoint. Only when it is confirmed that the treatment electrode contacts the acupoint will it enter the normal physical therapy state, step by step, while ensuring the safety of use, the accuracy and intelligence of acupoint finding are guaranteed, so that acupoint finding no longer depends on the user's human acupoint recognition ability. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the structure of the wearable Bluetooth APP-controlled acupoint detection and photoelectric stimulation pain patch published in 2014104155891.

[0038] Figure 2 It is a partial exploded view of the laser acupoint treatment pen with electrical stimulation function from the first perspective of the present invention.

[0039] Figure 3 This is a schematic diagram of the first circuit structure of the laser acupoint treatment pen with electrical stimulation function of the present invention.

[0040] Figure 4 This is a schematic diagram of the second circuit structure of the laser acupoint treatment pen with electrical stimulation function of the present invention.

[0041] Figure 5 It is a structural schematic diagram of the laser acupoint treatment pen with electrical stimulation function according to the present invention from a second viewing angle.

[0042] Figure 6 yes Figure 5 Enlarged view of part A in the figure.

[0043] Figure 7 yes Figure 5 Enlarged view of part B in the middle. DETAILED DESCRIPTION

[0044] The present invention provides a laser acupuncture point treatment pen with an electrical stimulation function. To make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail below with reference to the accompanying drawings and examples.

[0045] The present invention provides a laser acupuncture point treatment pen with electric stimulation function, such as Figure 2 As shown, the laser acupoint treatment pen includes: a treatment electrode 100, a circuit board 200 and a microcontroller (such as Figure 4 As shown), the treatment electrode 100 is used to contact the human body (for acupoint detection or human phototherapy and electrotherapy). The treatment electrode 100 serves as an interface for contacting the human body and plays a role in guiding the current; the microcontroller is used to generate intermittent small detection pulse signals, and collect the voltage change amplitude through the circuit board to determine whether the treatment electrode is in contact with the human body. If the judgment result is yes, the intermittent small detection pulse signal is stopped, and the first low-frequency pulse signal is generated instead and the laser output module is controlled to output the laser, and the voltage change amplitude is collected through the circuit board to determine whether the treatment electrode is in contact with the acupoint. If the judgment result is yes, the first low-frequency pulse signal is stopped and a second low-frequency pulse signal greater than the first low-frequency pulse signal is generated instead, and the voltage change amplitude is continuously collected through the circuit board to determine whether the treatment electrode is in contact with the human body. If the judgment result is no, the laser acupoint treatment pen is controlled to enter the standby / shutdown mode.

[0046] The intermittent tiny detection pulse signal, the first low-frequency pulse signal and the second low-frequency pulse signal generated by the microcontroller will drive the first transistor Q6 to work through the pulse signal output port, so that the transformer B2 generates and boosts the voltage to induce a low-frequency pulse high-voltage signal, and the low-frequency pulse high-voltage signal forms a loop through the human body, the first resistor R25 and the second resistor R19 (preferably completed by the low-frequency high-voltage pulse generating circuit 210, such as Figure 3 As shown, the details will be described below). The voltage change at both ends of the first resistor R25 is collected, amplified and converted into a pulse voltage to obtain a voltage change amplitude, and the voltage change amplitude is compared with a preset threshold (the first preset threshold is used to determine whether it contacts the human body, and the second preset threshold is used to determine whether the contact point is an acupoint) to determine whether the treatment electrode 100 contacts the human body and whether the contacted part is an acupoint (the obtained voltage amplitude reflects the current change when the treatment electrode 100 contacts the human body. If it does not contact the human body, there is no human body resistance model connected, and the voltage at both ends of the first resistor R25 does not change. If it is connected to the human body acupoint, the resistance of the human body resistance model is small, and the voltage change at both ends of the first resistor R25 is also small. If it is connected to the human body but not the acupoint, the resistance of the human body resistance model is large, and the voltage change at both ends of the first resistor R25 is also large. Based on this, it can be determined whether the treatment electrode 100 contacts the human body and whether the contacted position is an acupoint by the preset threshold).

[0047] The present invention determines whether the treatment electrode 100 is in contact with the human body and whether the contact position is an acupoint by monitoring the change in the voltage across the first resistor R25; compared with traditional acupoint finding methods, the present invention greatly reduces the dependence on the user's acupoint recognition ability, making the use of the laser acupoint treatment pen more convenient and eliminating the need for the user to perform complicated operations.

[0048] It should be noted that the present invention focuses on collecting voltage changes rather than absolute voltage values ​​during the judgment process, so as to more sensitively perceive tiny voltage fluctuations when the treatment electrode 100 contacts the human body. This not only improves the real-time performance of the microcontroller to changes in human body contact status, but also makes the system more sensitive and can better adapt to the physiological differences of different users, thereby enhancing the versatility and applicability of the acupoint-finding function.

[0049] In addition, the present invention enhances the stability of the signal by performing differential amplification and pulse voltage conversion processing on the collected voltage changes, so that the microcontroller can more effectively respond to weak signal changes caused by human body contact status, improves the measurability and reliability of the signal, and optimizes the performance of the laser acupoint therapy pen.

[0050] In the specific implementation, the present invention uses MCU to control the low-frequency high-voltage pulse generating circuit 210 to generate a low-frequency pulse high-voltage signal. Figure 3 and Figure 4 The low-frequency high-voltage pulse generating circuit 210 is connected to the PWM pin (PWM-Pulse Width Modulation, representing pulse width modulation) of the MCU. When the user operates the treatment pen, the MCU outputs a low-frequency therapy pulse signal, which drives the first transistor Q6 to work through PWM_OUT. Then, the primary of the transformer B2 will generate current, and the secondary boost induction generates a low-frequency pulse high-voltage signal, which forms a loop through the human body, the first resistor R25 and the second resistor R19. The low-frequency pulse high-voltage signal is used to massage the meridians and acupoints of the human body, and the acupoints are found through the cooperation of other circuits to determine whether the treatment electrode is in contact with the human body.

[0051] In a further preferred embodiment of the present invention, the circuit board 200 is configured with a pulse sampling filter circuit 220 (such as Figure 3 The design is designed to deal with the clutter interference that low-frequency pulse signals may suffer when passing through the human body circuit. This design can effectively reduce the impact of clutter through the dual effects of filtering and attenuation, thereby ensuring that the low-frequency pulse signal is clearer and more stable. In this way, the quality of the low-frequency pulse signal is improved, and the accuracy of the ADC voltage amplitude judgment result is further improved.

[0052] In addition, the introduction of the pulse sampling filter circuit 220 also has a significant improvement in the treatment effect. Specifically, the circuit can make the low-frequency pulse signal more focused on the target treatment area, reducing the impact of external interference on the treatment effect. It not only improves the accuracy and effectiveness of the treatment, but also ensures that the improved low-frequency pulse signal is more comfortable and safe, thereby enhancing the user's overall experience during the treatment process.

[0053] In specific implementation, the pulse sampling filter circuit 220 includes a first low-pass filter and a second low-pass filter. The first low-pass filter is composed of a third resistor R18 connected to one end of the first resistor R25 and connected to the first capacitor C9, forming an effective low-pass filter unit; at the same time, the second low-pass filter is composed of a fourth resistor R17 connected to the other end of the first resistor R25 and connected to the second capacitor C8. The joint operation of these two low-pass filters enables the pulse sampling filter circuit 220 to more accurately filter out the clutter interference in the low-frequency pulse signal, ensuring that the signal is purer and more stable. The structure of the dual low-pass filter not only improves the clutter filtering performance of the pulse sampling filter circuit 220, but also effectively reduces the interference of high-frequency components, thereby further improving the purity and stability of the signal, ensuring the quality of the low-frequency pulse signal, and providing a more reliable foundation for subsequent signal processing.

[0054] Preferably, in order to further process the low-frequency pulse signal after the pulse sampling filter circuit 220, the present invention introduces a differential operational amplifier circuit 230 (such as Figure 3 As shown), to improve the amplification effect and quality of the signal. Specifically, the differential operational amplifier circuit 230 includes a series of key components, wherein the fifth resistor R23 is arranged between the third resistor R18 and the first pin of the differential amplifier U2 (the pin is numbered 3, please note: due to the inconsistency between the design definition and the description order, the first pin is not marked as the number 1, and the same applies to other pins); in addition, the seventh resistor R22 and the third capacitor C7 are connected in parallel between the first pin and the second pin of the differential amplifier U2 to form a parallel branch. On the other hand, the sixth resistor R30 is configured between the fourth resistor R17 and the third pin of the differential amplifier U2. At the same time, one end of the eighth resistor R24 ​​is connected between the sixth resistor R30 and the differential amplifier U2, and the other end is grounded. In addition, one end of the fourth capacitor C8 is connected between the second resistor R19 and the sixth resistor R30 to form a parallel branch, and the other end is grounded.

[0055] In the differential operational amplifier circuit 230, the fifth resistor R23 and the sixth resistor R30 cleverly form an input resistor network to effectively receive and respectively connect to the two input ends of the low-frequency pulse signal, so that they together constitute a differential input structure. At the same time, the seventh resistor R22 and the third capacitor C7 are connected in parallel to form a third low-pass filter, which is mainly used to limit the high-frequency components of the input signal to ensure that only low-frequency signals can pass; the combined effect of the differential input and the low-pass filter effectively improves the sensitivity and purity of the low-frequency signal. In addition, the differential amplifier U2 flexibly controls the amplification factor by adjusting the ratio of the feedback resistor (i.e., the eighth resistor R24) and the input resistor (i.e., the seventh resistor R22). This adaptive adjustment mechanism enables the differential operational amplifier circuit 230 to adapt to the individual differences of the user and ensures the accuracy of the detection of the weak electrical signals of the human body. Through the above configuration, the differential operational amplifier circuit 230 can ensure that the signal is enhanced by a sufficient amplitude before transmitting the signal to the subsequent processing stage. For the detection of human bioelectric signals, this adaptive adjustment can ensure the accuracy of the detection and judgment results, enhance the robustness and reliability of the entire system, not only improve the amplification effect of low-frequency signals, but also have more flexible and intelligent characteristics in signal processing.

[0056] Preferably, the present invention further provides a pulse conversion voltage circuit 240 (such as Figure 3 As shown), the purpose is to effectively convert the amplified low-frequency pulse signal into a DC voltage signal for subsequent processing. The pulse conversion voltage circuit 240 includes: a ninth resistor R20, a tenth resistor R26, an eleventh resistor R28, a twelfth resistor R27, a thirteenth resistor R21, a fifth capacitor C12, a second transistor Q5 and a third transistor Q4. First, one end of the ninth resistor R20 is connected to the power supply of the microcontroller, and the other end is connected to the collector of the second transistor Q5; the base of the second transistor Q5 is connected to the parallel branch formed by the fifth capacitor C12 and the eleventh resistor R28 through the tenth resistor R26, and the emitter is connected to the collector of the third transistor Q4 through the twelfth resistor R27; the emitter of the third transistor Q4 is connected to the second pin of the differential amplifier U2 through the thirteenth resistor R21. Through the power supply provided by the microcontroller, the ninth resistor R20 connects the circuit to the microcontroller to ensure the normal operation of the circuit; the reasonable configuration of the second transistor Q5 and the third transistor Q4, and the circuit structure formed by the tenth to thirteenth resistors R21 and the fifth capacitor C12, enable the circuit to effectively convert low-frequency signals and pulse voltage conversion.

[0057] The role of the third transistor Q4 in the circuit is to control the conduction and closing of the second transistor Q5, and then regulate the transmission of the low-frequency pulse signal. In addition, through the power supply provided by the microcontroller, the fifth capacitor C12 is charged by the ninth resistor R20, the second transistor Q5, and the tenth resistor R26. The voltage conversion is realized to effectively convert the pulse signal to a collectable DC voltage. In this process, the eleventh resistor R28 is connected in parallel with the fifth capacitor C12 to ensure the charge and discharge time of the fifth capacitor C12, thereby improving the stability, accuracy and adaptability of the signal. In general, the above-mentioned setting makes the signal easier to process and analyze, while ensuring that the microcontroller accurately collects and identifies the ADC voltage amplitude.

[0058] According to another aspect of the present invention, the laser acupoint treatment pen further comprises: a substrate 300 and a housing 400. Figure 5 and Figure 6 As shown, the circuit board 200 is fixed to the substrate 300, and the housing 400 is provided with holding grooves 410 on both sides, and the holding protrusions 310 on both sides of the substrate 300 are accommodated in the holding grooves 410. The present invention effectively fixes and protects the circuit board 200 by installing the circuit board 200 on the substrate 300 and accommodating the substrate 300 in the holding grooves 410 of the housing 400, which can not only prevent the circuit board 200 from being affected by external shocks and vibrations, but also facilitate the maintenance and replacement of the circuit board 200, thereby improving the reliability and stability of the laser acupuncture point treatment pen, making it more suitable for long-term stable operation in actual use.

[0059] Furthermore, the inner wall of the housing 400 is provided with a supporting protrusion 420 extending toward the substrate 300. Figure 5 and Figure 7 As shown, two support protrusions 420 are provided, and a gap 430 is reserved between the two support protrusions 420. The provision of the support protrusions 420 can prevent the substrate 300 from loosening or shifting during use, thereby protecting the circuit board 200 from interference from the external environment; at the same time, by providing a gap 430 between the two support protrusions 420, the mechanical friction between the substrate 300 and the housing 400 can be effectively reduced, making the components of the laser acupuncture point treatment pen more flexible and smooth in use.

[0060] Preferably, the laser acupuncture point treatment pen further includes: a laser emitting device, and the treatment electrode 100 is provided with a light-transmitting hole, and the laser emitted by the laser emitting device is emitted through the light-transmitting hole. Through the light-transmitting hole on the treatment electrode 100, the laser emitted by the laser emitting device can directly irradiate the surface of the human body. When the patient contacts the treatment electrode 100, it can not only realize electrical stimulation treatment, but also irradiate the treatment part with laser at the same time, realizing the combined effect of electrical therapy and light therapy, and this combined effect can synergistically promote the treatment effect, and improve the application efficiency of the laser acupuncture point treatment pen in rehabilitation and pain relief.

[0061] In addition, those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present invention and to form different embodiments; for example, any one of the claimed embodiments may be used in any combination.

[0062] It should be noted that the above embodiments illustrate the present invention rather than limit it, and that those skilled in the art may devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference symbol between brackets shall not be construed as a limitation on the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "one" or "an" preceding an element does not exclude the presence of a plurality of such elements. The present invention may be implemented by means of hardware comprising a number of different elements and by means of a suitably programmed computer. In a unit claim enumerating a number of devices, several of these devices may be embodied by the same hardware item. The use of the words first, second, and third, etc. does not indicate any order. These words may be interpreted as names. The steps in the above embodiments, unless otherwise specified, should not be understood as limitations on the order of execution.

Claims

1. A laser acupoint treatment pen with electrical stimulation function, characterized in that: include: A treatment electrode, wherein the treatment electrode is used to transmit a pulse signal; A microcontroller, the microcontroller is used to generate an intermittent tiny detection pulse signal, collect the voltage change amplitude through the circuit board to determine whether the treatment electrode contacts the human body, if the judgment result is yes, stop generating the intermittent tiny detection pulse signal, instead generate a first low-frequency pulse signal and control the laser output module to output laser, and collect the voltage change amplitude through the circuit board to determine whether the treatment electrode contacts the acupuncture point, if the judgment result is yes, stop generating the first low-frequency pulse signal and instead generate a second low-frequency pulse signal greater than the first low-frequency pulse signal, and continue to collect the voltage change amplitude through the circuit board to determine whether the treatment electrode contacts the human body, if the judgment result is no, control the laser acupuncture point treatment pen to enter the standby / shutdown mode; The microcontroller will automatically switch the working mode according to the human body contact status. When it is just turned on or just out of the standby state, it will generate intermittent tiny detection pulse signals that will not cause discomfort to the human body to determine whether it is in contact with the human body. In the case of contact with the human body, it will determine whether the treatment electrode is in contact with the acupoint. Only when it is confirmed that the treatment electrode is in contact with the acupoint will it enter the normal physical therapy state. Under the condition of ensuring safety of use, acupoint search no longer depends on the user's ability to recognize human acupoints. The intermittent tiny detection pulse signal, the first low-frequency pulse signal and the second low-frequency pulse signal generated by the microcontroller will drive the first transistor to work through the pulse signal output port, so that the transformer generates and boosts the voltage to induce a low-frequency pulse high-voltage signal. The low-frequency pulse high-voltage signal forms a loop through the human body, the first resistor and the second resistor.

2. The laser acupoint treatment pen with electrical stimulation function according to claim 1, characterized in that: The circuit board is provided with a pulse sampling filter circuit, and the pulse sampling filter circuit is used to filter out the clutter of the low-frequency pulse signal after passing through the human body circuit.

3. The laser acupoint treatment pen with electrical stimulation function according to claim 2, characterized in that: The pulse sampling filter circuit includes: a third resistor connected to one end of the first resistor, a fourth resistor connected to the other end of the first resistor, a first capacitor and a second capacitor, the first capacitor is connected to the third resistor and grounded to form a first low-pass filter; the second capacitor is connected to the fourth resistor and grounded to form a second low-pass filter.

4. The laser acupoint treatment pen with electrical stimulation function according to claim 3, characterized in that: The circuit board is also provided with a differential operational amplifier circuit for amplifying the low-frequency pulse signal input by the pulse sampling filter circuit. The differential operational amplifier circuit includes: a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a third capacitor, a fourth capacitor and a differential amplifier. The fifth resistor is arranged between the third resistor and the first pin of the differential amplifier, the seventh resistor and the third capacitor are connected in parallel between the first pin and the second pin of the differential amplifier, the sixth resistor is arranged between the fourth resistor and the third pin of the differential amplifier, one end of the eighth resistor is connected between the sixth resistor and the differential amplifier, and the other end is grounded; one end of the fourth capacitor is connected between the second resistor and the sixth resistor to form a parallel branch, and the other end is grounded.

5. The laser acupoint treatment pen with electrical stimulation function according to claim 4, characterized in that: The circuit board is also provided with a pulse conversion voltage circuit for converting the amplified low-frequency pulse signal into a DC voltage signal, and the pulse conversion voltage circuit includes: a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a thirteenth resistor, a fifth capacitor, a second transistor and a third transistor; one end of the ninth resistor is connected to the power supply of the microcontroller, and the other end is connected to the collector of the second transistor; the base of the second transistor is connected to the parallel branch formed by the fifth capacitor and the eleventh resistor through the tenth resistor, and the emitter is connected to the collector of the third transistor through the twelfth resistor; the emitter of the third transistor is connected to the second pin of the differential amplifier through the thirteenth resistor.

6. The laser acupoint treatment pen with electrical stimulation function according to claim 1, characterized in that: The laser acupuncture point treatment pen further comprises: a substrate and a shell, the circuit board is fixed to the substrate, and clamping grooves are provided on both sides of the shell, and both sides of the substrate are accommodated in the clamping grooves.

7. The laser acupoint treatment pen with electrical stimulation function according to claim 6, characterized in that: A supporting protrusion is extended from the inner wall of the shell toward the substrate, two supporting protrusions are provided, and a gap is reserved between the two supporting protrusions.

8. The laser acupoint treatment pen with electrical stimulation function according to claim 1, characterized in that: The laser acupoint treatment pen further comprises: a laser emitting device, the treatment electrode is provided with a light-transmitting hole, and the laser emitted by the laser emitting device is emitted through the light-transmitting hole.

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