CN111529927B

CN111529927B - Medical medium frequency electrode pen

Info

Publication number: CN111529927B
Application number: CN202010272245.5A
Authority: CN
Inventors: 王建明; 龙航; 祁斌; 戴迪; 李宁宁; 孙九峰
Original assignee: Shandong Silin Pharmaceutical Technology Co ltd
Current assignee: Shandong Silin Pharmaceutical Technology Co ltd
Priority date: 2020-04-09
Filing date: 2020-04-09
Publication date: 2023-05-02
Anticipated expiration: 2040-04-09
Also published as: CN111529927A

Abstract

The invention relates to the field of physiotherapy equipment, and provides a medical medium-frequency electrode pen, which comprises a pen point, a pen holder and a pen tail, wherein the pen point comprises a central electrode, a measuring electrode, a head protection sleeve, a sheath and a pen point cover; the central electrode and the measuring electrode are movably sleeved in the protective head; the exciting electrode, the receiving electrode, the electrode switch and the single board machine are sequentially connected in series to form a measuring loop, and the single board machine is used for receiving electric signals of impedance measurement, converting the electric signals into digital signals and processing a plurality of groups of digital signals. Therefore, the invention carries out impedance measurement and treatment on the skin to be measured through the multi-point impedance measurement loop, compares and displays the impedance measurement result, and a user can quickly find the acupoint to be treated according to the prompt and can carry out physiotherapy through the pulse electrode. The invention can reduce the difficulty of searching the acupoints by the user, improve the accuracy of diagnosing the acupoints, enhance the physiotherapy effect on the affected part, and provide parameterized diagnosis results for the user.

Description

Medical medium frequency electrode pen

Technical Field

The invention relates to the field of physiotherapy equipment, and provides a medical medium-frequency electrode pen.

Background

The bioimpedance technology is a nondestructive detection technology for extracting biomedical information related to physiological and pathological conditions of human body by utilizing the electrical characteristics and changes of biological tissues and organs, and is characterized in that a tiny measuring current or voltage is fed to a detection object by means of electrodes arranged on the body surface, the corresponding electrical impedance and the change condition are detected, and then the related physiological and pathological information is obtained according to different application purposes.

It has been studied that the bioimpedance value of acupoints is lower than that of non-acupoints. When a human body is ill, the biological impedance value of the corresponding acupoint changes, so that the health condition of the human body can be mastered very simply, conveniently and intuitively by monitoring the change trend of the biological impedance value of the acupoint.

The traditional Chinese medicine theory holds that the stimulation of the meridian system, especially the acupoint energy, by the electric pulse method plays the roles of dredging the meridian, promoting the local vasodilation and accelerating the blood flow speed and the cell activity. The electrotherapy is used for improving pain and regulating nerve function. At present, electrodes directly acting on a human body are in various modes such as electrode plates, needle electrodes, electrode probes and the like, the electrode plates are mainly used for human skin, the needle electrodes and the electrode probes are mainly used for subcutaneous tissue of the human body, and the needle electrodes and the electrode probes are basically used for transmitting electromyographic signals to monitor certain specific parameters of the human body.

At present, when using physiotherapy equipment, apply electrode piece etc. to the epidermis of being surveyed, because the accurate position of unclear acupuncture point often need to use great electrode paster to tolerate the error of selecting the cave, like this can not only increase the cost, can also reduce the treatment, can produce the harm to the organism around the epidermis of being surveyed again. The diagnosis result and effectiveness of traditional Chinese medicine are largely dependent on subjective judgment of doctors. How to make the diagnostic index of traditional Chinese medicine more objective and have diagnostic reference value is a break-through for the development of modern traditional Chinese medicine.

In summary, it is clear that the prior art has inconvenience and defects in practical use, so that improvement is needed.

Disclosure of Invention

Aiming at the defects, the invention aims to provide the medical medium-frequency electrode pen which can judge the positions of acupuncture points through impedance, quickly find out the positions needing physiotherapy, treat the affected parts in an electric pulse mode, and provide visual and numerical parameters for diagnosis of doctors.

In order to achieve the above purpose, the invention provides a medical intermediate frequency electrode pen, which comprises a pen point, a pen holder and a pen tail, wherein the pen point and the pen holder are in interference buckling, the pen tail is in threaded connection with the end part of the pen holder, and the pen point, the pen holder and the pen tail are sequentially connected; the pen point comprises a central electrode, a measuring electrode, a head protecting sleeve, a sheath and a pen point cover; one end of the sheath is movably sleeved with the guard head, the other end of the sheath is fixedly connected with the pen point cover, the central electrode is movably sleeved with the axle center of the guard head, and measuring electrodes which are movably sleeved on the guard head are uniformly distributed around the central electrode; the pen holder comprises a rod body, an electrode switch and a single-plate machine; the rod body accommodates the electrode switch and a single board computer for receiving the electric signals of impedance measurement, converting the electric signals into digital signals and comparing a plurality of groups of digital signals; the exciting electrode, the receiving electrode, the electrode switch and the single-board machine are sequentially connected in series to form a measuring loop; the utility model discloses a pole body, including pole body, single trigger, pole switch, plug connector is installed to the pole body one end that is close to the nib, the single trigger rigid coupling is in on the pole body, still be equipped with on the pole body be used for installing the electrode switch's electrode switch mounting hole.

According to the medical intermediate frequency electrode pen, the central electrode is provided with the measuring electrode contact and the pulse electrode, and the pulse electrode and the physiotherapy instrument form a physiotherapy loop.

According to the medical intermediate frequency electrode pen, the number of the measuring electrode contacts is not less than 5.

According to the medical intermediate frequency electrode pen, the pen point further comprises a head protecting spring, and the head protecting spring, the head protecting and the sheath form a protective sleeve of the central electrode and the measuring electrode.

According to the medical intermediate frequency electrode pen, the pen point further comprises an electrode spring and a piezoelectric crystal, wherein the electrode spring is used for controlling the measuring loop to be opened and closed.

According to the medical intermediate frequency electrode pen, the constant current output by the measuring loop is 160 mu A.

According to the medical intermediate frequency electrode pen, the single board computer is provided with a display for displaying digital signals.

According to the medical intermediate frequency electrode pen, the display is provided with an upper arrow display area, a lower arrow display area, a left arrow display area, a right arrow display area and a center ellipse display area.

According to the medical intermediate frequency electrode pen, the display area of the display is provided with LED backlight.

According to the medical intermediate frequency electrode pen, the pen tail is provided with the external interface for connecting a physiotherapy instrument.

According to the invention, the measured epidermis is subjected to impedance measurement and treatment through the multi-point impedance measurement loop consisting of the excitation electrode, the receiving electrode and the single-board machine, the impedance measurement result is compared and displayed, the user is instructed to prompt to find the position of the acupoint according to the display, the user can quickly find the acupoint which needs physiotherapy according to the prompt, and physiotherapy can be performed through the pulse electrode. The invention can reduce the difficulty of searching the acupoints by the user, improve the accuracy of diagnosing the acupoints, enhance the physiotherapy effect on the affected part, and provide parameterized diagnosis results for the user.

Drawings

FIG. 1 is a schematic view of an exploded construction of the present invention;

FIG. 2 is a cross-sectional view of the present invention;

FIG. 3 is a schematic view of the structure of the center electrode of the present invention;

FIG. 4 is a front view of the center electrode of the present invention;

FIG. 5 is a schematic view of the structure of the pen cap of the present invention;

FIG. 6 is a schematic structural view of a shaft according to the present invention;

FIG. 7 is a schematic view of a connector of the present invention;

FIG. 8 is a schematic diagram of the display content of the display of the present invention;

FIG. 9 is a schematic diagram of the operation of the measurement circuit of the present invention;

FIG. 10 is a schematic view of the operation of the present invention;

in the figure, 1-pen point, 11-center electrode, 111-pulse electrode, 12-measuring electrode, 121-measuring electrode contact, 122-excitation electrode, 123-receiving electrode, 13-head guard, 131-limit table, 132-measuring electrode mounting hole, 133-center electrode mounting hole, 14-sheath, 141-limit retainer ring, 15-pen cap, 151-spring mounting post, 152-female snap-fit, 16-head guard spring, 17-electrode spring, 18-piezoelectric crystal, 2-pen holder, 21-shaft, 211-male snap-fit, 212-connector fixing hole, 213-viewing port, 214-electrode switch mounting hole, 22-connector, 221-connector mounting hole, 23-electrode switch, 24-battery, 25-single board computer, 251-display, 3-pen tail, 31-external interface, 32-internal interface, 4-skin to be measured.

Detailed Description

In the description of the present invention, it should 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", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means 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 present invention. In this specification, schematic representations of the above terms are not necessarily directed 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. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

Referring to fig. 1, the invention comprises a pen point 1, a pen holder 2 and a pen tail 3. The pen head 1 comprises a central electrode 11, a measuring electrode 12, a protective head 13, a sheath 14, a pen head cover 15, a protective head spring 16, an electrode spring 17 and a piezoelectric crystal 18. The central electrode 11 is sleeved in the guard head 13, the guard head 13 is provided with a limiting table 131, the guard head 13 is also provided with a measuring electrode mounting hole 132 for sleeving the measuring electrode 12, and the guard head 13 is also provided with a central electrode mounting hole 133 for sleeving the central electrode 11. The sheath 14 is provided with a limit retainer ring 141, and the limit retainer ring 141 is matched with the limit table 131 and is used for blocking and limiting the head guard 13. The pen point cover 15 is adhered to the sheath 14 in an adhering manner, and a hollow spring mounting column 151 is arranged on the pen point cover 15. The head protection spring 16 is sleeved on the measuring electrode 12, and the head protection spring 16 is arranged between the head protection 13 and the spring mounting column 151. The electrode spring 17 is installed in the spring installation column 151, the electrode spring 17 is arranged between the measuring electrode 12 and the piezoelectric crystal 18, the piezoelectric crystal 18 is in a ring shape, and the piezoelectric crystal 18 is adhered to the pen point cover 15.

Preferably, the guard 13 is provided with a measuring electrode mounting hole 132. The measuring electrode 12 can freely slide in the measuring electrode mounting hole 132, and the measuring electrode mounting hole 132 can be pushed by the head protection spring 16 to attach the limiting table 131 to the limiting check ring 141 when the measuring electrode 12 is not used, so that the measuring electrode 12 is prevented from being polluted by the outside.

In order to improve the accuracy and speed of the measuring electrodes 12 during operation, at least 5 measuring electrodes can be sleeved in the protective head 13. The greater the number of measuring electrodes 12, the higher the accuracy of the measurement and the faster the speed of finding the acupoints, and the greater the volume of the head guard 13. In the invention, 5 measuring electrodes 12 are sleeved on a protective head 13, wherein 4 measuring electrodes 12 are arranged in a measuring

electrode mounting hole

132, and 1 measuring electrode 12 is arranged in the center of a central electrode 11. During the operation of the invention, the impedance of 5 measuring points in the area of the tested epidermis 4 can be monitored simultaneously.

The pen holder 2 includes a shaft 21, a connector 22, an electrode switch 23, a battery 24, and a single board computer 25. The shaft 21 is for accommodating the connector 22, the electrode switch 23, the battery 24, and the single board computer 25. The connector 22 is used for connecting the internal circuit of the shaft 21. The battery 24 is a power unit of the present invention, and an ac-dc conversion module is disposed inside the battery 24 to provide ac and/or dc power to the electronic components of the present invention. The single board computer 25 comprises a micro-processing unit, a data storage unit, an I/O interface, a constant current power supply module, an interrupt controller, an analog/digital converter, a modem and other components.

Preferably, the piezoelectric crystal 18 is connected to a control circuit on the single-plate machine 25 for controlling the internal measuring circuit to measure the impedance of the skin 4 under test. The measuring electrode 121 may push the electrode spring 17 to compress, the electrode spring 17 presses the piezoelectric crystal 18 to generate an electrical signal, and when the electrical signal generated by the pressure of the electrode spring 17 reaches a preset value of a control circuit on the single board computer 25, a condition for starting a measuring circuit is provided. The electrode switch 23 is a primary physical switch of all the measuring electrodes 12, and can lead out the static electricity of a user through the ground wire of the physiotherapy circuit connected to the pen tail 3, when the electrode switch 23 is pressed by the user, and when the electric signal generated by the piezoelectric crystal 18 pressed by the electrode spring 17 reaches the preset value of the control circuit on the single board computer 25, the measuring circuit can be started.

The pen tail 3 is connected with the rod body 21, and the pen point 1, the pen holder 2 and the pen tail 3 are sequentially connected to form a pen body.

Referring to fig. 2, when the protecting head 13 contacts the tested skin 4, the protecting head 13 compresses the protecting head spring 16 under force to expose the measuring electrode 12 sleeved in the protecting head 13, the measuring electrode 12 contacts the tested skin 4, the user continues to apply pressure to the tested skin 4, the measuring electrode 12 presses the electrode spring 17, and the electrode spring 17 presses the piezoelectric crystal 18 to generate an electric signal. The single board computer 25 is adhered to the inside of the shaft 21, and is also provided with a display 251, and the display 251 is adhered to the viewing port 213. The electrode switch 23 is mounted in the electrode switch mounting hole 214, and the battery 24 is mounted in a battery compartment in the shaft 21. The pen tail 3 is screwed on the rod body 21, and an outer interface 31 and an inner interface 32 are further arranged on the pen tail 3. The external interface 31 is used for connecting with a physiotherapy instrument, and the external interface 31 is connected with at least 5 jacks; the internal interface 32 is used to transfer the electrical power and signals from the physiotherapy instrument to the measuring circuit and pulse circuit in the shaft 21.

Referring to fig. 3, the central electrode 11 includes a pulse electrode 111 and an intermediate measuring electrode 12, the pulse electrode 111 is insulated from the measuring electrode 12, the measuring electrode 12 is used for measuring the impedance of the tested epidermis 4, and the pulse electrode 111 is used for transmitting pulse signals of the physiotherapy instrument. The measurement electrode 12 is further provided with a measurement electrode contact 121, and a signal-transmitting pin is connected to the central electrode 11.

Referring to fig. 4, the measuring electrode contact 121 is provided with an excitation electrode 122 and a receiving electrode 123. As shown in fig. 4, the exciting electrode 122 is disposed at the center of the measuring electrode contact 121, and the exciting electrode 122, the receiving electrode 123 and the pulse electrode 111 are sequentially and annularly disposed from the center to the periphery of the central electrode 111, and the exciting electrode 122, the receiving electrode 123 and the pulse electrode 111 are insulated from each other.

Referring to fig. 5, the pen cap 15 is used to close the sheath 14, and the sheath 14 and the head 13 provide protection for the center electrode 11 and the measuring electrode 12. The pen head cover 15 is also provided with a female snap 152. A pin for transmitting signals is also connected to the nib cover 15.

Referring to fig. 6, the shaft 21 is provided with a male fastener 211 that mates with the female fastener 152, and the male fastener 211 and the female fastener 152 are in interference fit, so that the shaft 21 and the pen point 1 can be tightly combined after assembly. The shaft 21 is also provided therein with connector fixing holes 212 for mounting the connectors 22, and the connector fixing holes 212 are uniformly provided on the circumference of the shaft 21. The shaft 21 is further provided with a viewing port 213 for mounting the display 251, and the user can view the display 251 from the viewing port 213. The shaft 21 is further provided with an electrode switch mounting hole 214 for mounting the electrode switch 23.

Referring to fig. 7, the connector 22 is provided with a connector mounting hole 221, and the connector mounting hole 221 is fitted with the connector fixing hole 212. Pins and jacks for transmitting signals are also connected to the connector 22.

Referring to fig. 8, the display 251 is provided on the single board computer 25, and an analog/digital converter on the single board computer 25 converts the impedance electric signal of the skin 4 to be measured collected from the measuring electrode 12 into an impedance digital signal, and displays the impedance digital signal on the display 251.

Preferably, the display 251 is provided with four arrows on the upper, lower, left and right and a central oval display area, the electric signals measured by the measuring electrodes 12 are converted by the analog/digital converter and then connected to the corresponding display area, and each measuring electrode 12 corresponds to the display area on the upper, lower, left and right sides; the measurement data of the measurement electrodes 12 in the central electrode 11 are connected to an elliptical display area in the center of the display 251, and the measurement data of the 4 measurement electrodes 12 uniformly distributed on the guard 13 correspond to four arrow display areas on the upper, lower, left and right sides, respectively.

Preferably, the display area of the display 251 is connected with led backlight, and when one measuring electrode 12 collects the impedance signal of the tested skin 4, the led backlight of the corresponding display area is lightened so that the user can observe the measured impedance data.

Further, the led backlight of the display area of the display 251 may flash to remind. After the invention detects 5 groups of measurement data transmitted by all measurement electrodes 12, the micro-processing unit on the single board computer 25 compares the 5 groups of data, and according to the theoretical research of traditional Chinese medicine, the impedance at the acupuncture points is lower than the impedance around the acupuncture points, so that the invention sets the led backlight of the smallest display area in the 5 groups of data to flash and remind.

Referring to fig. 9, there is shown a schematic diagram of the operation of the impedance measurement circuit of the present invention. The invention adopts the technique of current excitation voltage measurement, and the impedance is measured by a double-electrode method. In fig. 9, I represents a constant current power supply module, on which an ammeter for measuring real-time current is provided, I is integrated on the single board computer 25, and the constant current power supply module I, a current limiting resistor R, an exciting electrode 122 and a receiving electrode 123 form a complete measuring loop, in which V is used for measuring the voltage between the exciting electrode 122 and the receiving electrode 123. The impedance of the measurement point can be calculated from ohm's law r=u/I. In order to ensure that a user is not stabbed due to overlarge current at the tested epidermis 4 in the measurement process, the output current of the constant-current power supply module is constant at 160 mu A.

When impedance is measured by using the double-electrode method, the degree of tightness of contact between the measured epidermis 4 and the measuring electrode 12 can cause the difference of contact resistance, and directly influence the measurement accuracy of the acupoint impedance. The structure of the measuring electrode 12, the electrode spring 17 and the piezoelectric crystal 18, namely the piezoelectric crystal 18 must bear a certain elastic force of the electrode spring 17 to open the measuring circuit. Thus, the contact resistance of each measured epidermis 4 is basically consistent, and the measurement accuracy of the acupoint impedance can be improved.

Referring to fig. 10, the posture of a user holding the present invention by hand while working with the present invention is shown in fig. 10. The user touches the electrode switch 23 slightly to contact the guard 13 with the skin 4 to be measured, and applies a pressure in the direction shown in the figure F, so that the guard 13 compresses the guard spring 16 under the action of the pressure to expose the central electrode 11 and the measuring electrode 1 inside the guard 13. The user continues to increase the pressure F, the measuring electrode contact 121 on the measuring electrode 12 contacts the measured epidermis 4, the measuring electrode 12 pushes the electrode spring 17 to press the piezoelectric crystal 18, when the pressure F reaches the preset pressure, the electric signal generated by the piezoelectric crystal 18 is transmitted to the control circuit on the single board computer 25 to close the measuring loop, so as to measure the impedance data of 5 points around, and the impedance data is processed by the single board computer 25 and displayed at the corresponding position on the display 251, and the battery 24 supplies electric energy for the measuring loop.

When the minimum value in the 5 groups of measured data is displayed in the display area of the four arrows on the upper, lower, left and right, a user can combine led backlight flashing reminding to move the display device to the reminding direction; the user then translates the present invention a suitable distance in the direction of the display 251, again measures the impedance data of the skin epidermis, and moves accordingly in accordance with the prompts of the display 251 of the present invention.

When the minimum value of the 5 measured sets of data is displayed in the elliptical display area in the center of the display 251, here approximately the location of the selected acupoint. So far, according to the theory of traditional Chinese medicine, the impedance of the acupoint is lower than the surrounding impedance of the acupoint, and the detection of the acupoint position is finished.

According to the detected acupoint positions, the external interface 31 of the pen tail 3 can be connected with a physiotherapy instrument, appropriate physiotherapy parameters are selected through the physiotherapy instrument, and physiotherapy is performed on an affected part through the pulse electrode 111 on the central electrode 11.

In summary, the invention performs impedance measurement and processing on the skin to be measured through the multi-point impedance measurement loop consisting of the measurement electrode, the electrode switch and the single board computer, compares and displays the impedance measurement result, instructs the user to find the position of the acupoint according to the prompt of the display, and the user can quickly find the acupoint to be treated according to the prompt and can treat the skin by the pulse electrode. The invention can reduce the difficulty of searching the acupoints by the user, improve the accuracy of diagnosing the acupoints, enhance the physiotherapy effect on the affected part, and provide parameterized diagnosis results for the user.

Of course, the present invention is capable of other various embodiments and its several details are capable of modification and variation in light of the present invention, as will be apparent to those skilled in the art, without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. The medical medium-frequency electrode pen is characterized by comprising a pen point, a pen holder and a pen tail, wherein the pen point and the pen holder are in interference buckling, the pen tail is in threaded connection with the end part of the pen holder, and the pen point, the pen holder and the pen tail are sequentially connected;

the pen point comprises a central electrode, a measuring electrode, a head protecting sleeve, a sheath and a pen point cover; one end of the sheath is movably sleeved with the guard head, the other end of the sheath is fixedly connected with the pen point cover, the central electrode is movably sleeved with the axle center of the guard head, measuring electrodes which are movably sleeved on the guard head are uniformly distributed around the central electrode, the center of the central electrode is provided with the measuring electrode, and a measuring electrode contact at the front end of the measuring electrode is provided with an excitation electrode and a receiving electrode;

the pen holder comprises a rod body, a plug connector, an electrode switch and a single-board computer; the rod body accommodates the electrode switch and the single board computer which is used for receiving the electric signals of impedance measurement, converting the electric signals into digital signals and comparing a plurality of groups of digital signals; the exciting electrode, the receiving electrode, the electrode switch and the single-board computer are sequentially connected in series through wires to form a measuring loop; the end of the rod body close to the pen point is provided with a plug connector, the single board computer is fixedly connected on the rod body, the pole body is also provided with an electrode switch mounting hole for mounting the electrode switch;

the number of the measuring electrodes is not less than 5.

2. The medical intermediate frequency electrode pen according to claim 1, wherein the central electrode is provided with a measuring electrode contact and a pulse electrode, and the pulse electrode and the physiotherapy instrument form a physiotherapy loop.

3. The medical medium frequency electrode pen according to claim 1, wherein the pen tip further comprises a tip guard spring, the tip guard and the sheath comprising a protective sheath for the center electrode and the measuring electrode.

4. The medical medium frequency electrode pen according to claim 1, wherein the pen tip further comprises an electrode spring and a piezoelectric crystal for controlling the opening and closing of the measuring circuit.

5. The medical intermediate frequency electrode pen according to claim 1, wherein the constant current output by the measuring circuit is 160 μΑ.

6. The medical intermediate frequency electrode pen according to claim 1, wherein the single board computer is provided with a display for displaying digital signals.

7. The medical intermediate frequency electrode pen according to claim 6, wherein the display is provided with an upper, lower, left, right and left arrow display area and a center ellipse display area.

8. The medical medium frequency electrode pen according to claim 7, wherein the display area of the display is provided with an LED backlight.

9. The medical intermediate frequency electrode pen according to claim 1, wherein an external interface for connecting a physiotherapy instrument is arranged on the pen tail.