One-to-many transmission device capable of transmitting biological information and physical treatment signals

By designing a pair of multi -transmission devices with transmitting biological information and physical therapy signals, the problem of the existing physical therapy instrument signal transmission line cannot be interoperable, and the interoperability of multiple signals and the sensing of human physiological signals and the transmission of back passes back Essence

CN222422640UActive Publication Date: 2025-01-28E WELL MEDICAL CORP
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Patent Information

Application Number
CN202420997901.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-09
Publication Date
2025-01-28
Estimated Expiration
2034-05-09

AI Technical Summary

Technical Problem

The signal transmission lines of existing physical therapy instruments cannot be interoperable, resulting in a wide variety, difficult to store and cannot be used to sense human physiological signals.

Method used

A pair of multi -transmission devices with transmitting biological information and physical therapy signals, using Type C interfaces, including sound waves, light signals, electrotherapy and heat source signal transmission cables, which can be inserted on different physical therapy and biosensors. Essence

Benefits of technology

The signal interoperability between different physical therapy instruments can be exported to multiple electrical signals for physical therapy, and can be sensing and returned to the human physiological signal, simplifying the use and management of the equipment.

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Abstract

The utility model relates to a one-to-many transmission device capable of transmitting biological information and physical treatment signals. The one-to-many transmission device comprises a TYPE C electric connector, an acoustic signal transmission line, an optical signal transmission line and a heat source signal transmission line, wherein the acoustic signal transmission line, the optical signal transmission line and the heat source signal transmission line are electrically connected with the TYPE C electric connector. The TYPE C electric connector is inserted into a physical therapy instrument or a biological sensing instrument with a TYPE C interface, and the sound wave signal transmission line, the optical signal transmission line or the heat source signal transmission line can perform physical therapy related to an electro-therapy instrument, a thermal therapy instrument, an acoustic therapy instrument or a phototherapy machine on the body of a human body, or after the sound wave signal transmission line, the optical signal transmission line or the heat source signal transmission line is in contact with the body of the human body, the sound wave signal transmission line, the optical signal transmission line or the heat source signal transmission line can transmit the physical therapy related to the electro-therapy instrument, the thermal therapy instrument, the acoustic therapy instrument or the phototherapy machine. According to the invention, a body signal of a human body can be sensed and returned to a related biological sensor, so that the biological sensor can sense a physiological signal of the body of the human body.
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Description

Technical Field

[0001] The present application relates to a transmission device, and more particularly to a one-to-many transmission device capable of transmitting biological information and physical therapy signals. Background Art

[0002] Physical therapy is a medical science that treats or improves human body functions through physiological changes caused by physical factors such as force, heat, sound, light, electricity, and water.

[0003] The physical therapy devices currently on the market include electrotherapy devices, thermal therapy devices, sound therapy devices, phototherapy devices, etc. These physical therapy devices all have their own transmission lines and patches (or electrode patches). For example, an electrotherapy device can generate low-frequency, medium-frequency or high-frequency electrical signals, which are plugged into the electrotherapy device through one or two transmission lines, and the patch (or electrode patch) connected to one end of the transmission line is attached to the injured part of the patient's body. When the electrotherapy device outputs low-frequency, medium-frequency or high-frequency electrical signals, the electrical signals are transmitted to the patch (or electrode) via the transmission line to generate electric current to stimulate the muscles to achieve a therapeutic effect, relieve pain, promote local blood circulation, and help relieve muscle soreness.

[0004] Although the above-mentioned electrotherapy device has the effect of electrotherapy, the signal transmission line of the electrotherapy device cannot be plugged into other thermal therapy devices, sound therapy devices, and light therapy devices. This is because different physical therapy devices have their own signal transmission lines. As a result, there are too many types of physical therapy devices, which will lead to too many types of signal transmission lines, and cause problems such as too many signal transmission lines being difficult to store and inconvenient to use.

[0005] In addition, the signal transmission lines used in these physical therapies only have the function of transmitting signal outputs, and cannot be used to sense human body signals after contact with the human body and transmit them back to the relevant biosensors or biodetectors to provide the biosensors or biodetectors with the ability to analyze and sense the human body's physiological signals.

[0006] Therefore, how to solve the problem that different physical therapy devices must be equipped with different signal transmission lines is the subject to be solved by this application. Utility Model Content

[0007] Therefore, the main purpose of this application is to provide a new one-to-many transmission device that can be plugged into different physical therapy devices, biosensors or biodetectors to output different electrical signals to perform physical therapy on the human body, or to sense the physiological signals of the human body, and transmit the sensed physiological signals back to the biosensor or biodetector for detection. At the same time, the one-to-many transmission device is also easy for the user to store when not in use.

[0008] To achieve the above-mentioned purpose, the present application provides a one-to-many transmission device for transmitting biological information and physical therapy signals, which is plugged into a physical therapy device or a biological sensor with a TYPE C interface, and the one-to-many transmission device includes: a TYPE C electrical connector, an acoustic signal transmission line, an optical signal transmission line, and a heat source signal transmission line electrically connected to the TYPE C electrical connector. The TYPE C electrical connector has a connector, and the connector has a circuit board electrically connected to the connector. The acoustic signal transmission line has a transmission wire, and the transmission wire is electrically connected to the circuit board. The other end of the transmission wire has a cover for outputting and collecting acoustic waves. The optical signal transmission line includes at least one light-emitting component, at least one optical fiber transmission line, a light guide connected to the optical fiber transmission line, and a light guide plate installed inside the light guide cover. The light-emitting component is electrically connected to the circuit board to generate a light source, and the light source is introduced into the optical fiber transmission line, and the optical fiber transmission line transmits the light source to the light guide cover, and the light source is evenly diffused on the light guide plate. The heat source signal transmission line has a transmission conductor electrically connected to the circuit board, one end of the transmission conductor is electrically connected to a patch, and the patch has a coil loop.

[0009] In one embodiment of the present application, the cover body is in the shape of a trumpet, and a piezoelectric component and a tympanic membrane are disposed inside the cover body.

[0010] In one embodiment of the present application, the piezoelectric component generates a low-frequency sound wave between 25 Hz and 120 Hz.

[0011] In one embodiment of the present application, the light-emitting component is a light-emitting diode.

[0012] In one embodiment of the present application, the light emitting diode is an ultraviolet light emitting diode or an infrared light emitting diode.

[0013] In one embodiment of the present application, the wavelength of light of the ultraviolet light emitting diode is in the range of about 200nm to 400nm.

[0014] In one embodiment of the present application, the coil loop includes an inner loop and an outer loop.

[0015] In one embodiment of the present application, a thermocouple component is electrically connected between the inner loop and the outer loop of the coil loop.

[0016] In one embodiment of the present application, the coil loop plus the physical therapy device outputs a pulse width modulation wave of a specific frequency for temperature control. Through pulse waves of different widths and frequencies, the coil loop undergoes an electric current thermal effect, causing the coil loop temperature to reach 38°C to 43°C.

[0017] In one embodiment of the present application, the coil loop is in the shape of a straight line, a continuous wave or a continuous sine wave.

[0018] In one embodiment of the present application, the resistance value of the coil loop is 18.5Ω±1.5Ω.

[0019] In one embodiment of the present application, an electrotherapy signal transmission line is also included, wherein the electrotherapy signal transmission line has a transmission conductor electrically connected to the circuit board, and one end of the transmission conductor is electrically connected to at least one electrode sheet.

[0020] In one embodiment of the present application, the physical therapy device or the biological sensor device has a female TYPE C electrical connector.

[0021] In one embodiment of the present application, the physical therapy device is an electrotherapy device, a thermal therapy device, a sound therapy device, or a light therapy device.

[0022] In one embodiment of the present application, the TYPE C electrical connector is a male TYPE C electrical connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 , is a schematic diagram of the appearance of a one-to-many transmission device of the present application;

[0024] Figure 2 ,for Figure 1 Circuit block diagram of

[0025] Figure 3 , is a schematic cross-sectional view of a cover structure connected to the acoustic signal transmission line of the present application;

[0026] Figure 4 , is a schematic cross-sectional view of the structure of the optical signal transmission line connected to the light guide cover of the present application;

[0027] Figure 5 , is a schematic diagram of the heat source signal transmission line connection patch structure of the present application;

[0028] Figure 6 , is a schematic diagram of the heat source signal transmission line connected to another patch structure of the present application.

[0029] Description of reference numerals:

[0030] 10: TYPE C electrical connector;

[0031] 101: connector;

[0032] 102: circuit board;

[0033] 20: sound wave signal transmission line;

[0034] 201: transmission wire;

[0035] 202: cover body;

[0036] 203: piezoelectric component;

[0037] 204: Tympanic membrane;

[0038] 30: optical signal transmission line;

[0039] 301 light emitting components;

[0040] 302 optical fiber transmission line;

[0041] 303: light guide cover;

[0042] 304: light guide plate;

[0043] 40: electrotherapy signal transmission line;

[0044] 401: transmission wire;

[0045] 402 electrode sheet;

[0046] 50: heat source signal transmission line;

[0047] 501: transmission wire;

[0048] 502: patch;

[0049] 503, 505: coil loop;

[0050] 5031, 5051: inner circuit;

[0051] 5032, 5052: external circuit;

[0052] 504: Thermocouple assembly. DETAILED DESCRIPTION

[0053] The technical content and detailed description of this application are now described as follows with reference to the accompanying drawings:

[0054] See also Figures 1-2 , the appearance and Figure 1Schematic diagram of circuit block. As shown in the figure: the one-to-many transmission device for transmitting biological information and physical therapy signals of the present application, the one-to-many transmission device comprises: a TYPE C electrical connector 10, an acoustic signal transmission line 20, an optical signal transmission line 30, an electrotherapy signal transmission line 40 and a heat source signal transmission line 50 electrically connected to the TYPE C electrical connector 10. Among them, the TYPE C electrical connector 10 is plugged into a general physical therapy device such as an electrotherapy device, a thermal therapy device, a sonotherapy device, a phototherapy device or a biosensor, so that the one-to-many transmission device can transmit sound waves, optical signals, electrical signals, heat and receive biological information, such as body electrical signals, body radiation (such as infrared rays, blood oxygen information, body temperature) or body sound waves (such as body-conducted sound, decibel value measurement, blood pressure, pulse or heartbeat). In this figure, the physical therapy device such as the electrotherapy device, the thermal therapy device, the sonotherapy device, the phototherapy device or the biosensor has a female TYPE C electrical connector for plugging the male TYPE C electrical connector 10.

[0055] The TYPE C electrical connector 10 has a connector 101 which is plugged into an electrotherapy device, a thermal therapy device, an acoustic therapy device, a phototherapy device or a biosensor. The connector 101 has a circuit board 102 which is electrically connected to the connector 101. The circuit board 102 can perform signal conversion to convert electrical energy into sound, light, electricity or heat for transmission and output by various transmission lines, or convert the returned sound, light, electricity, heat or body signals (such as body telecommunications, body radiation (such as infrared rays, blood oxygen information, body temperature) or body sound waves (such as body-conducted sound, decibel measurement, blood pressure, pulse or heartbeat) into signals that can be read by physical therapy devices such as electrotherapy devices, thermal therapy devices, acoustic therapy devices, phototherapy devices or biosensors. In this figure, the TYPE C electrical connector 10 is a male TYPE C electrical connector 10.

[0056] The acoustic signal transmission line 20 has a transmission conductor 201, which is electrically connected to the circuit board 102 of the TYPE C electrical connector 10, and the other end of the transmission conductor 201 has a cover 202 ( Figure 3As shown in the figure, a piezoelectric component 203 and an eardrum 204 are disposed inside the cover 202. The piezoelectric component 203 is electrically connected to the transmission wire 201 to receive the signal transmitted by the transmission wire 201, so that the piezoelectric component 203 generates a vibration or knocking sound wave. The low frequency (Low Frequency Sound) between 25HZ and 120HZ of the sound wave resonates with the human body, generating a healing force at the cellular level, which can relieve stress, relax muscles, and restore energy through the masking effect of the sound triggered by the specific audio frequency. In addition, when the cover 202 is covered on the patient's body, the eardrum 204 installed in the cover 202 is used to collect sound (sound waves). The eardrum 204 is made into a trumpet shape to facilitate the collection of sound, convert the sound waves into vertical sound waves, and make the piezoelectric component 203 create pressure to convert it into an electrical signal. This electrical signal is transmitted to the circuit board 102 through the transmission wire 201 and converted into an electrical signal that can be interpreted by the biosensor (not shown in the figure). After being processed by the biosensor, the electrical signal is converted into a graphical display (such as heart rate, respiratory rate, blood pressure), or calculated to give corresponding medical or diagnostic data. In this figure, the cover 202 is trumpet-shaped.

[0057] The optical signal transmission line 30 includes at least one light-emitting component 301, at least one optical fiber transmission line 302, a light guide cover 303 connected to the optical fiber transmission line 302, and a light guide plate 304 (such as Figure 4 As shown). After the light emitting component 301 is electrically connected to the circuit board 102, the electrical energy is converted into a light source output, and the light source is introduced into the optical fiber transmission line 302, and the optical fiber transmission line 302 transmits the light source to the light guide cover 303, and the light source is evenly diffused on the light guide plate 304. The light source output by the light guide plate 304 can perform phototherapy on the patient's body injuries. In this figure, the light emitting component 301 is a light emitting diode, and the light emitting diode is an ultraviolet light emitting diode (the wavelength of light is in the range of about 200 to 400nm) or an infrared light emitting diode.

[0058] The electrotherapy signal transmission line 40 has a transmission wire 401 electrically connected to the circuit board 102, and one end of the transmission wire 401 is electrically connected to at least one electrode sheet 402. The electrode sheet 402 is attached to the patient's body injury, and after the TYPE C electrical connector 10 is plugged into an electrotherapy device (not shown), the low-frequency, medium-frequency or high-frequency electrotherapy signal output by the electrotherapy device is transmitted to the electrode sheet 402 via the transmission wire 401, and the electric current is used to stimulate the muscles to achieve the therapeutic effect, relieve pain, promote local blood circulation, and help relieve muscle soreness. It is suitable for a variety of situations, including muscle soreness, arthritis, sports injuries, etc.

[0059] The heat source signal transmission line 50 has a transmission wire 501 electrically connected to the circuit board 102. One end of the transmission wire 501 is electrically connected to a patch 502. The patch 502 has a straight coil loop 503 (such as Figure 6 ), the coil loop 503 includes an inner loop 5031 and an outer loop 5032. When the TYPE C electrical connector 10 is plugged into the thermal therapy device, the coil loop 503 adopts a resistance value of 18.5Ω±1.5Ω, and the thermal therapy device outputs a pulse width modulation (PWM) wave of a specific frequency for temperature control. The pulse waves of different widths and frequencies cause the coil loop 503 to generate a current thermal effect, so that the temperature of the coil loop 503 reaches 38℃~43℃ to heat the body, and the patient can be subjected to hot compress or thermal therapy.

[0060] It is worth mentioning that a thermocouple component 504 is electrically connected between the inner loop 5031 and the outer loop 5032 of the coil loop 503. The thermocouple component 504 monitors the temperature generated by the coil loop 503 at any time. When the temperature of the coil loop 503 is too high, the thermocouple component 504 sends a signal back to the thermotherapy device, so that the thermotherapy device stops applying heat or heat therapy to the user. Alternatively, after the coil loop 503 senses the temperature of the human body, the thermocouple component 504 sends the sensed temperature signal back to the biosensor (not shown) plugged into the TYPE C electrical connector, and the biosensor measures the body temperature.

[0061] See also Figure 3 , a schematic cross-sectional view of the cover structure connected to the acoustic signal transmission line of the present application, and also refer to Figure 1 , 2 As shown in the figure: when the TYPE C electrical connector 10 of the one-to-many transmission device of the present application is plugged into a sound therapy device (not shown in the figure), the cover body 202 connected to the transmission wire 201 is covered on the patient's injured part, and after the output signal of the sound therapy device is transmitted to the cover body 202 through the transmission wire 201, the piezoelectric component 203 generates a low frequency (LowFrequency Sound) between 25HZ and 120HZ that resonates with the human body, generating healing power at the cellular level, which can relieve stress, relax muscles, and restore energy through the masking effect of the sound triggered by the specific audio frequency.

[0062] When the TYPE C electrical connector 10 is plugged into the female TYPE C electrical connector of the biosensor (not shown), the cover 202 is placed on the heart or blood vessel pulse of the body so that the trumpet-shaped eardrum 204 in the cover 202 collects sound (sound waves) and converts the sound waves into vertical sound waves, so that the piezoelectric component 203 creates pressure, which is converted into an electrical signal. This electrical signal is transmitted to the signal conversion circuit 103 through the transmission wire 201 and converted into an electrical signal that can be interpreted by the biosensor. After being processed by the biosensor, the electrical signal is converted into a graphical display (such as heart rate, respiratory rate, blood pressure), or corresponding medical or diagnostic data is given after calculation.

[0063] See also Figure 4 , the optical signal transmission line of the present application is connected to the light guide cover structure cross-sectional diagram, and refer to Figure 1 , 2 As shown. As shown in the figure: when the TYPE C electrical connector 10 of the one-to-many transmission device of the present application is plugged into the female TYPE C electrical connector of the phototherapy machine (not shown in the figure), the light guide cover 303 is attached to or placed on the patient's injured part, and the phototherapy machine outputs a signal through the circuit board 102 to light up the light-emitting component 301, and the light source is incident on the optical fiber transmission line 302 for light source transmission. When the light source is transmitted to the light guide plate 304 of the light guide cover 303, the light source will be evenly diffused on the light guide plate 304, so that the light source output by the light guide plate 304 can perform phototherapy on the patient's injured part.

[0064] See also Figure 5 , the heat source signal transmission line connection patch structure diagram of the present application, and also refer to Figure 1 , 2 As shown in the figure: the TYPE C electrical connector 10 of the one-to-many transmission device of the present application is plugged into a thermal therapy device (not shown in the figure), and the patch 502 is attached to the patient's wound. The thermal therapy device outputs an electrical signal which is transmitted to the patch 502 by the transmission wire 501, so that the coil loop 503 of the patch 502 generates a heat source, and the patient can be subjected to heat compress or heat therapy.

[0065] Since a thermocouple component 504 is electrically connected between the inner loop 5031 and the outer loop 5032 of the coil loop 503, the thermocouple component 504 monitors the temperature generated by the coil loop 503 at any time. When the temperature of the coil loop 503 is too high, the thermocouple component 504 sends a signal back to the thermotherapy device, causing the thermotherapy device to stop providing hot compress or thermotherapy to the user.

[0066] Alternatively, when the TYPE C electrical connector 10 of the one-to-many transmission device is plugged into a biosensor (not shown), after the coil loop 503 senses the temperature of the human body, the thermocouple component 504 transmits the sensed temperature signal back to the biosensor to which the TYPE C electrical connector 10 is plugged, and the biosensor measures the body temperature.

[0067] See also Figure 6 , the heat source signal transmission line of the present application is connected to another patch structure schematic diagram. As shown in the figure: this embodiment and Figure 6 Almost the same, except that Figure 6 The coil loop 503 is designed as a straight line, and the coil loop 505 in this figure is designed as a continuous wave or sine wave.

[0068] The output power signal of the thermal therapy device is transmitted to the coil loop 505 through the transmission wire 501 to generate a heat source, which can be used to perform heat compress or heat therapy on the patient.

[0069] Since a thermocouple component 504 is electrically connected between the inner loop 5051 and the outer loop 5052 of the coil loop 505, the thermocouple component 504 monitors the temperature generated by the coil loop 505 at any time. When the temperature of the coil loop 505 is too high, the thermocouple component 504 sends a signal back to the thermal therapy device (not shown in the figure), so that the thermal therapy device stops providing hot compress or thermal therapy to the user.

[0070] Alternatively, when the TYPE C electrical connector 10 of the one-to-many transmission device is plugged into a biosensor (not shown), after the coil loop 505 senses the temperature of the human body, the thermocouple component 504 transmits the sensed temperature signal back to the biosensor to which the TYPE C electrical connector 10 is plugged, and the biosensor measures the body temperature.

[0071] Furthermore, in the one-to-many transmission device of the present application, in addition to using a single TYPE C electrical connector 10 to electrically connect multiple acoustic signal transmission lines 20, optical signal transmission lines 30, electrotherapy signal transmission lines 40 and heat source signal transmission lines 50 to form a multifunctional design, the present application can also use a single TYPE C electrical connector 10 to electrically connect one of the acoustic signal transmission lines 20, optical signal transmission lines 30, electrotherapy signal transmission lines 40 or heat source signal transmission lines 50 to form a single-function signal transmission device.

[0072] However, the above description is only a preferred embodiment of the present application and is not intended to limit the patent protection scope of the present application. Therefore, all equivalent changes made using the contents of the present application specification or drawings are also included in the scope of protection of the present application and are hereby stated.

Claims

1. A one-to-many transmission device for transmitting biological information and physical therapy signals, characterized in that: Plugged into a physical therapy device or a biosensor with a TYPE C interface, the one-to-many transmission device includes: A TYPE C electrical connector having a connector thereon, wherein the connector has a circuit board therein that is electrically connected to the connector; The sound wave signal transmission line has a transmission wire, the transmission wire is electrically connected to the circuit board, and the other end of the transmission wire has a cover for outputting and collecting sound waves; An optical signal transmission line includes at least one light-emitting component, at least one optical fiber transmission line, a light guide cover connected to the optical fiber transmission line, and a light guide plate installed inside the light guide cover, wherein the light-emitting component is electrically connected to the circuit board to generate a light source, the light source is introduced into the optical fiber transmission line, the optical fiber transmission line transmits the light source to the light guide cover, and the light source is evenly diffused on the light guide plate; The heat source signal transmission line has a transmission conductor electrically connected to the circuit board, one end of the transmission conductor is electrically connected to a patch, and the patch has a coil loop.

2. The one-to-many transmission device for transmitting biological information and physical therapy signals as claimed in claim 1, characterized in that: The cover body is in the shape of a trumpet, and a piezoelectric component and a tympanic membrane are arranged inside the cover body.

3. The one-to-many transmission device for transmitting biological information and physical therapy signals as claimed in claim 2, characterized in that: The piezoelectric component generates low-frequency sound waves between 25 Hz and 120 Hz.

4. The one-to-many transmission device for transmitting biological information and physical therapy signals as claimed in claim 1, characterized in that: The light emitting component is a light emitting diode.

5. The one-to-many transmission device for transmitting biological information and physical therapy signals as claimed in claim 4, characterized in that: The light emitting diode is an ultraviolet light emitting diode or an infrared light emitting diode.

6. The one-to-many transmission device for transmitting biological information and physical therapy signals as claimed in claim 5, characterized in that: The wavelength of the ultraviolet light emitting diode is in the range of about 200nm to 400nm.

7. The one-to-many transmission device for transmitting biological information and physical therapy signals as claimed in claim 1, characterized in that: The coil loop includes an inner loop and an outer loop.

8. The one-to-many transmission device for transmitting biological information and physical therapy signals as claimed in claim 7, characterized in that: A thermocouple component is electrically connected between the inner loop and the outer loop of the coil loop.

9. The one-to-many transmission device for transmitting biological information and physical therapy signals as claimed in claim 7, characterized in that: The coil loop plus the physiotherapy device outputs a pulse width modulation wave of a specific frequency for temperature control. Through pulse waves of different widths and frequencies, the coil loop generates a current thermal effect, so that the temperature of the coil loop reaches 38°C to 43°C.

10. The one-to-many transmission device for transmitting biological information and physical therapy signals as claimed in claim 1, characterized in that: The coil loop is in the form of a straight line, a continuous wave or a continuous sine wave.

11. The one-to-many transmission device for transmitting biological information and physical therapy signals as claimed in claim 1, characterized in that: The resistance value of the coil loop is 18.5Ω±1.5Ω.

12. The one-to-many transmission device for transmitting biological information and physical therapy signals as claimed in claim 1, characterized in that: It also includes an electrotherapy signal transmission line, which has a transmission conductor electrically connected to the circuit board, and one end of the transmission conductor is electrically connected to at least one electrode sheet.

13. The one-to-many transmission device for transmitting biological information and physical therapy signals as claimed in claim 1, characterized in that: The physical therapy device or the biological sensor is provided with a female TYPE C electrical connector.

14. The one-to-many transmission device for transmitting biological information and physical therapy signals as claimed in claim 13, characterized in that: The physical therapy apparatus is an electrotherapy apparatus, a thermal therapy apparatus, a sonotherapy apparatus, or a phototherapy apparatus.

15. The one-to-many transmission device for transmitting biological information and physical therapy signals as claimed in claim 1, characterized in that: The TYPE C electrical connector is a male TYPE C electrical connector.