Physiotherapy device and its electrode leads

Abstract

This application relates to the field of physiotherapy device technology, and discloses a physiotherapy device and its electrode wires. The physiotherapy device electrode wires include: a wire; a main unit connector located at the first end of the wire for electrical connection to the main unit of the physiotherapy device; and an electrode connector located at the second end of the wire. The electrode connector includes an insulating shell and a conductive part. The conductive part is electrically connected to the main unit connector via the wire. The conductive part includes a contact surface for mating with an electrode plate. The insulating shell covers the conductive part, and the contact surface is exposed. A magnet is disposed within the conductive part. The magnet is magnetized along its own axis, which is perpendicular to the contact surface. The insulating shell includes a first end face and a second end face opposite to each other along the magnet's axis. The contact surface is exposed on the first end face. A first region and the contact surface on the second end face are both planar. The first region can be magnetically connected to the contact surface of another electrode connector. The magnetic poles of the magnets on each electrode connector are installed in the same direction. The embodiments of this application facilitate the storage of the physiotherapy device electrode wires.

Description

Technical Field

[0001] This application relates to the field of physiotherapy device technology, specifically to a physiotherapy device and its electrode wires. Background Technology

[0002] Physiotherapy devices stimulate nerve fibers by applying low- or medium-frequency electrical pulses to the skin, thereby activating the body's pain inhibition mechanisms. This reduces or blocks the transmission of pain signals to the brain, achieving a therapeutic effect of pain relief. The device mainly consists of a main unit and electrode pads. The electrode pads are attached to the painful area of ​​the body and connected to the main unit via electrode wires. The electrical pulse stimulation signals output by the main unit are transmitted to the body through the electrode pads.

[0003] Since the main unit of the physiotherapy device requires at least two electrode pads, multiple electrode wires are needed to connect the main unit to the multiple electrode pads. When there are many electrode wires, they are prone to tangling, which can damage the wires and make them messy and untidy, causing inconvenience for users and resulting in a poor user experience. Utility Model Content

[0004] In view of the above problems, this application provides a physiotherapy device and its electrode wires, which facilitates wire storage.

[0005] This application provides an embodiment of an electrode wire for a physiotherapy device, comprising:

[0006] At least one wire;

[0007] A main unit connector, located at the first end of at least one wire, is used for electrical connection to the main unit of the physiotherapy device; and

[0008] At least one electrode connector is located at the second end of at least one wire. The at least one electrode connector includes an insulating shell and a conductive portion. The conductive portion is electrically connected to a host connector via the at least one wire. The conductive portion includes a contact surface for mating with an electrode plate. The insulating shell covers the conductive portion, and the contact surface is exposed.

[0009] A magnet is provided inside the conductive part. The magnet is magnetized along its axial direction, which is perpendicular to the contact surface. The insulating shell includes a first end face and a second end face that are opposite each other along the axial direction of the magnet. The contact surface is exposed on the first end face. The first region in the second end face and the contact surface are both planar. The first region can be magnetically connected to the contact surface of another electrode connector. The magnetic poles of the magnets of each electrode connector are installed in the same direction.

[0010] In some embodiments, the second end face of the insulating housing has a protrusion, the top surface of the protrusion forms a first region, and the first end face of the insulating housing has a groove, the shape and size of which are configured to engage with the protrusion of another electrode connector.

[0011] In some embodiments, the cross-sections of the protrusion and the groove are both circular; or, the cross-sections of the protrusion and the groove are both square; or, the cross-sections of the protrusion and the groove are both triangular; or, the cross-sections of the protrusion and the groove are both elliptical.

[0012] In some embodiments, the bottom surface of the groove is flush with the contact surface, and the height of the protrusion is equal to the depth of the groove.

[0013] In some embodiments, the insulating housing includes a first housing and a second housing, the first housing having a first snap-fit ​​portion and the second housing having a second snap-fit ​​portion, the first snap-fit ​​portion and the second snap-fit ​​portion engaging to fasten the first housing and the second housing together.

[0014] In some embodiments, the first snap-fit ​​portion is an arc-shaped groove, and the second snap-fit ​​portion is an arc-shaped protrusion, wherein the arc-shaped groove and the arc-shaped protrusion are adapted in shape and size.

[0015] In some embodiments, a through hole is provided on the first housing for accommodating a conductive part.

[0016] In some embodiments, the magnet is a toroidal shape.

[0017] In some embodiments, the number of at least one wire is n, the number of at least one electrode connector is n, where n is a positive integer greater than 1, and the n electrode connectors are electrically connected to the host connector through n wires respectively.

[0018] The electrode wires of the physiotherapy device can be configured such that, in the non-use state, n electrode connectors are placed adjacent to each other, and in any two adjacent electrode connectors, the contact surface of one electrode connector is magnetically connected to the first area of ​​the other electrode connector, so as to store the electrode wires of the physiotherapy device.

[0019] In some embodiments, at least one wire includes a first wire and a second wire, and at least one electrode connector includes a first electrode connector and a second electrode connector. The conductive portions of the first electrode connector and the second electrode connector are electrically connected to the host connector through the first wire and the second wire, respectively.

[0020] The electrode wires of the physiotherapy device can be configured such that, in the non-use state, the contact surface of the first electrode connector and the first area of ​​the second electrode connector are magnetically connected to store the electrode wires of the physiotherapy device.

[0021] In some embodiments, at least one wire includes a first wire, a second wire, a third wire, and a fourth wire, and at least one electrode connector includes a first electrode connector, a second electrode connector, a third electrode connector, and a fourth electrode connector, wherein the conductive portions of the first electrode connector, the second electrode connector, the third electrode connector, and the fourth electrode connector are electrically connected to the host connector via the first wire, the second wire, the third wire, and the fourth wire, respectively.

[0022] The electrode leads of the physiotherapy device can be configured such that the contact surface of the first electrode connector and the first area of ​​the second electrode connector are magnetically connected, and the contact surface of the third electrode connector and the first area of ​​the fourth electrode connector are magnetically connected to obtain a pair of electrode connectors for single-channel use.

[0023] The electrode wires of the physiotherapy device can also be configured such that, in the non-use state, the contact surface of the first electrode connector and the first area of ​​the second electrode connector are magnetically connected, the contact surface of the second electrode connector and the first area of ​​the third electrode connector are magnetically connected, and the contact surface of the third electrode connector and the first area of ​​the fourth electrode connector are magnetically connected, so as to store the electrode wires of the physiotherapy device.

[0024] This application also provides a physiotherapy device, including:

[0025] The physiotherapy device electrode wires as described in the above embodiments, and

[0026] Host.

[0027] In some embodiments, the number of at least one wire is n, the number of at least one electrode connector is n, where n is a positive integer greater than 1, the host includes a controller, n switching units and n current detection units, the n switching units correspond to the n electrode connectors respectively, the n current detection units correspond to the n electrode connectors respectively, the n electrode connectors include a first electrode connector, the n switching units include a first switching unit corresponding to the first electrode connector, the n current detection units include a first current detection unit corresponding to the first electrode connector, the first switching unit is connected to the power supply terminal of the host, and the other switching units among the n switching units are grounded;

[0028] The controller is used to control the closing of the first switching unit and the closing of the target switching unit among the other switching units. It detects the current at the first electrode connector through the first current detection unit, or detects the current at the target electrode connector corresponding to the target current detection unit through the target current detection unit among the n current detection units, so as to determine whether the first electrode connector and the target electrode connector form a circuit. The target electrode connector corresponds to the target switching unit.

[0029] In some embodiments, at least one wire includes a first wire, a second wire, and a third wire; at least one electrode connector includes a first electrode connector, a second electrode connector, and a third electrode connector; the host includes a controller, a first switch unit, a fourth switch unit, a sixth switch unit, a first current detection unit, a second current detection unit, and a third current detection unit; the first switch unit, the fourth switch unit, and the sixth switch unit correspond to the first electrode connector, the second electrode connector, and the third electrode connector, respectively; the first current detection unit, the second current detection unit, and the third current detection unit correspond to the first electrode connector, the second electrode connector, and the third electrode connector, respectively; the first switch unit is connected to the power supply terminal of the host; and the fourth switch unit and the sixth switch unit are grounded.

[0030] The controller is used to control the closing of the first switch unit and the closing of the target switch unit in the fourth and sixth switch units. It detects the current at the first electrode connector through the first current detection unit, or detects the current at the target electrode connector corresponding to the target current detection unit through the target current detection unit in the second and third current detection units, so as to determine whether the first electrode connector and the target electrode connector form a circuit. The target electrode connector corresponds to the target switch unit.

[0031] In some embodiments, at least one wire includes a first wire, a second wire, a third wire, and a fourth wire; at least one electrode connector includes a first electrode connector, a second electrode connector, a third electrode connector, and a fourth electrode connector; the host includes a controller, a first switch unit, a fourth switch unit, a sixth switch unit, an eighth switch unit, a first current detection unit, a second current detection unit, a third current detection unit, and a fourth current detection unit; the first switch unit, the fourth switch unit, the sixth switch unit, and the eighth switch unit correspond to the first electrode connector, the second electrode connector, the third electrode connector, and the fourth electrode connector, respectively; the first current detection unit, the second current detection unit, the third current detection unit, and the fourth current detection unit correspond to the first electrode connector, the second electrode connector, the third electrode connector, and the fourth electrode connector, respectively; the first switch unit is connected to the power supply terminal of the host; and the fourth switch unit, the sixth switch unit, and the eighth switch unit are grounded.

[0032] The controller is used to control the closing of the first switch unit and the closing of the target switch unit among the fourth, sixth and eighth switch units. It detects the current at the first electrode connector through the first current detection unit, or detects the current at the target electrode connector corresponding to the target current detection unit through the target current detection unit among the second, third and fourth current detection units, in order to determine whether the first electrode connector and the target electrode connector form a circuit. The target electrode connector corresponds to the target switch unit.

[0033] In some embodiments, at least one wire includes a first wire, a second wire, a third wire, and a fourth wire; at least one electrode connector includes a first electrode connector, a second electrode connector, a third electrode connector, and a fourth electrode connector; the host includes a controller, a first switch, a third switch, a fourth switch, a fifth switch, a sixth switch, an eighth switch, a first current detection unit, a second current detection unit, a third current detection unit, and a fourth current detection unit; the first electrode connector is connected to the power supply terminal of the host through the first switch; the second electrode connector is connected to the power supply terminal of the host through the third switch; the second electrode connector is also grounded through the fourth switch; the third electrode connector is connected to the power supply terminal of the host through the fifth switch; the third electrode connector is also grounded through the sixth switch; the fourth electrode connector is grounded through the eighth switch; the first current detection unit, the second current detection unit, the third current detection unit, and the fourth current detection unit are respectively connected to the first electrode connector, the second electrode connector, the third electrode connector, and the fourth electrode connector.

[0034] The controller is used for:

[0035] The system controls the first and fourth switches to close, and detects the current at the first electrode connector through the first current detection unit or the current at the second electrode connector through the second current detection unit to determine whether a circuit is formed between the first and second electrode connectors.

[0036] The system controls the first and sixth switches to close, and detects the current at the first electrode connector through the first current detection unit or the current at the third electrode connector through the third current detection unit to determine whether the first electrode connector and the third electrode connector form a circuit.

[0037] The system controls the first switch and the eighth switch to close, and detects the current at the first electrode connector through the first current detection unit or the current at the fourth electrode connector through the fourth current detection unit to determine whether the first electrode connector and the fourth electrode connector form a circuit.

[0038] The third and sixth switches are controlled to close, and the current at the second electrode connector is detected by the second current detection unit or the current at the third electrode connector is detected by the third current detection unit to determine whether the second electrode connector and the third electrode connector form a circuit.

[0039] The third and eighth switches are controlled to close, and the current at the second electrode connector is detected by the second current detection unit or the current at the fourth electrode connector by the fourth current detection unit, so as to determine whether the second electrode connector and the fourth electrode connector form a circuit.

[0040] The fifth and eighth switches are controlled to close, and the current at the third electrode connector is detected by the third current detection unit, or the current at the fourth electrode connector is detected by the fourth current detection unit, in order to determine whether the third electrode connector and the fourth electrode connector form a circuit.

[0041] In some embodiments, a first current control unit is also connected between the first switch and the power supply terminal of the host. When the first electrode connector forms a first path, a second path, or a third path with the second electrode connector, a third electrode connector, or a fourth electrode connector, the controller is used to control the current intensity of the first path, the second path, or the third path through the first current control unit.

[0042] A second current control unit is also connected between the third switch and the power supply terminal of the host. When the second electrode connector forms a fourth or fifth path with the third or fourth electrode connector, the controller is used to control the current intensity of the fourth or fifth path through the second current control unit.

[0043] A third current control unit is also connected between the fourth switch and the power supply terminal of the host. When the third electrode connector and the fourth electrode connector form the sixth path, the controller is used to control the current intensity of the sixth path through the third current control unit.

[0044] In some embodiments, each of the first switch, third switch, fourth switch, fifth switch, sixth switch and eighth switch includes: a first resistor, a first transistor, a second resistor and a second transistor;

[0045] One end of the first resistor is connected to the controller, and the other end is connected to the base of the first transistor. The collector of the first transistor is connected to one end of the second resistor, the emitter of the first transistor is grounded, and the other end of the second resistor is connected to the base of the second transistor.

[0046] For the first switch, the emitter of the second transistor is connected to the power supply terminal of the host through the first current control unit, and the collector of the second transistor is connected to the first electrode connector.

[0047] For the third switch, the emitter of the second transistor is connected to the power supply terminal of the host through the second current control unit, and the collector of the second transistor is connected to the second electrode connector.

[0048] For the fourth switch, the emitter of the second transistor is connected to the second electrode connector, and the collector of the second transistor is grounded through the second current detection unit.

[0049] For the fifth switch, the emitter of the second transistor is connected to the power supply terminal of the host through the third current control unit, and the collector of the second transistor is connected to the third electrode connector.

[0050] For the sixth switch, the emitter of the second transistor is connected to the third electrode connector, and the collector of the second transistor is grounded through the third current detection unit.

[0051] For the eighth switch, the emitter of the second transistor is connected to the fourth electrode connector, and the collector of the second transistor is grounded through the fourth current detection unit.

[0052] In some embodiments, each current sensing unit includes: a third transistor, a third resistor, a fourth resistor, and a diode;

[0053] The collector of the third transistor is connected to the controller, the emitter of the third transistor is grounded, the base of the third transistor is connected to one end of the third resistor and one end of the fourth resistor, the other end of the third resistor is grounded, the other end of the fourth resistor is connected to the other end of the third resistor and the positive terminal of the diode, and the negative terminal of the diode is connected to the electrode connector corresponding to the current detection unit.

[0054] In some embodiments, the host further includes a second switch and a seventh switch, the first electrode connector is grounded through the second switch, and the fourth electrode connector is connected to the power supply terminal of the host through the seventh switch;

[0055] When the first electrode connector and the second electrode connector form a first circuit, the controller provides bidirectional pulses to the first circuit by alternately controlling the closing of the first set of switches and the closing of the second set of switches. The first set of switches includes a first switch and a fourth switch, and the second set of switches includes a second switch and a third switch.

[0056] When the first electrode connector and the third electrode connector form a second path, the controller provides bidirectional pulses to the second path by alternately controlling the closing of the third group of switches and the closing of the fourth group of switches. The third group of switches includes the first switch and the sixth switch, and the fourth group of switches includes the second switch and the fifth switch.

[0057] When the first electrode connector and the fourth electrode connector form a third path, the controller provides bidirectional pulses to the third path by alternately controlling the closing of the fifth group of switches and the sixth group of switches. The fifth group of switches includes the first switch and the eighth switch, and the sixth group of switches includes the second switch and the seventh switch.

[0058] When the second electrode connector and the third electrode connector form the fourth path, the controller provides bidirectional pulses to the fourth path by alternately controlling the closing of the seventh group of switches and the closing of the eighth group of switches. The seventh group of switches includes the third and sixth switches, and the eighth group of switches includes the fourth and fifth switches.

[0059] When the second electrode connector and the fourth electrode connector form the fifth path, the controller provides bidirectional pulses to the fifth path by alternately controlling the closing of the ninth group of switches and the closing of the tenth group of switches. The ninth group of switches includes the third and eighth switches, and the tenth group of switches includes the fourth and seventh switches.

[0060] When the third electrode connector and the fourth electrode connector form the sixth channel, the controller provides bidirectional pulses to the sixth channel by alternately controlling the closing of the eleventh group of switches and the twelfth group of switches. The eleventh group of switches includes the fifth and eighth switches, and the twelfth group of switches includes the sixth and seventh switches.

[0061] This embodiment of the application incorporates a magnet magnetized along the axial direction of the electrode connector on the electrode wire of the physiotherapy device. The insulating shell of the electrode connector includes two end faces. The conductive part of the electrode connector is exposed on one end face, allowing it to mate with the electrode plate. The first area of ​​the other end face is planar, and the contact surface of the conductive part of the electrode connector is also planar. This design allows any two electrode connectors to be magnetically attracted to each other, and multiple electrode connectors can be stacked and magnetically attracted sequentially. This prevents the electrode wires of the physiotherapy device from tangling, reduces the risk of wire damage, and makes the wires neater and more organized during storage, thus improving the user experience.

[0062] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, specific embodiments of this application are given below. Attached Figure Description

[0063] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0064] Figure 1A A schematic diagram of the structure of a prior art physiotherapy device is shown;

[0065] Figure 1B A schematic diagram of the structure of the physiotherapy device according to an embodiment of this application is shown;

[0066] Figure 2 A schematic diagram of the main unit and electrode wires of a single-interface physiotherapy device is shown.

[0067] Figure 3A A schematic diagram of the structure of an electrode wire of a physiotherapy device according to an embodiment of this application is shown;

[0068] Figure 3B A schematic diagram of the structure of an electrode wire for a physiotherapy device according to an embodiment of this application is shown;

[0069] Figure 3C This invention illustrates a schematic diagram of the structure of an electrode wire for a physiotherapy device according to another embodiment of this application.

[0070] Figure 4 A partial structural schematic diagram of the electrode wires of the physiotherapy device according to an embodiment of this application is shown;

[0071] Figure 5 A partial structural cross-sectional view of the electrode wires of the physiotherapy device according to an embodiment of this application is shown;

[0072] Figure 6 A partially exploded structural diagram of the electrode wires of the physiotherapy device according to an embodiment of this application is shown;

[0073] Figure 7 This is a partially exploded structural diagram of the electrode wires of the physiotherapy device according to an embodiment of this application from another perspective;

[0074] Figure 8A A schematic diagram showing the state of the two electrode connectors before connection is shown;

[0075] Figure 8B A schematic diagram showing the state of the two electrode connectors after connection is shown;

[0076] Figure 9A A schematic diagram of a pre-connection state of four electrode connectors is shown;

[0077] Figure 9B A schematic diagram showing one connection state of the four electrode connectors is provided.

[0078] Figure 10A A schematic diagram of another pre-connection state of the four electrode connectors is shown;

[0079] Figure 10B A schematic diagram showing another connection state of the four electrode connectors is shown;

[0080] Figure 11 A structural block diagram of a physiotherapy device according to an embodiment of this application is shown;

[0081] Figure 12 A schematic diagram of the structure of a physiotherapy device according to an embodiment of this application is shown;

[0082] Figure 13 A schematic diagram of another physiotherapy device according to an embodiment of this application is shown;

[0083] Figure 14 A schematic diagram of another physiotherapy device according to an embodiment of this application is shown;

[0084] Figure 15A This paper shows a circuit diagram related to the first electrode connector in the pathway detection circuit of the physiotherapy device according to an embodiment of the present application;

[0085] Figure 15B This paper shows a circuit diagram related to the second electrode connector in the pathway detection circuit of the physiotherapy device according to an embodiment of the present application;

[0086] Figure 15C This paper shows a circuit diagram related to the third electrode connector in the pathway detection circuit of the physiotherapy device according to an embodiment of the present application;

[0087] Figure 15D This paper shows a circuit diagram related to the fourth electrode connector in the pathway detection circuit of the physiotherapy device according to an embodiment of the present application;

[0088] Figure 16 This is a simplified circuit diagram of the pathway detection circuit of the physiotherapy device according to an embodiment of this application;

[0089] Figure 17 This is a schematic diagram showing the usage state of the physiotherapy device according to an embodiment of this application.

[0090] The reference numerals in the detailed embodiments are as follows:

[0091] Physiotherapy device - 100, 200, Safety socket - 1, USB interface - 2, Type-C interface - 3, Physiotherapy device electrode wires - 4, 20, Main unit 10, Cable - 21, First end of cable - 21a, Second end of cable - 21b, First cable - 21a, Second cable - 21b, Third cable - 21c, Fourth cable - 21d, Main unit connector - 22, Electrode connector - 23, Conductive part - 231, Contact surface - 2311, Insulation 232 outer casing, 232a first end face, 232b second end face, 2321 first housing, 2322 second housing, 2323 first snap-fit ​​part, 2324 second snap-fit ​​part, 2325 through hole, 2326 protrusion, 2327 groove, 233 magnet, 23a first electrode connector, 23b second electrode connector, 23c third electrode connector, 23d fourth electrode connector, 24 wired control module. Detailed Implementation

[0092] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0093] Physiotherapy devices (such as portable transcutaneous electrical nerve stimulation devices, or TENS devices for short) apply low- or medium-frequency electrical pulses to the skin to stimulate nerve fibers, thereby activating the body's pain inhibition mechanisms, including the gating effect in the spinal cord and promoting the release of analgesic substances such as endorphins. This reduces or blocks the transmission of pain signals to the brain, thus achieving the therapeutic effect of relieving pain.

[0094] The physiotherapy device mainly consists of a main unit and electrode pads. The electrode pads are attached to the painful areas of the human body, such as the neck, shoulders, back, waist, arms, and legs, and are connected to the main unit through electrode wires. The electrical pulse stimulation signals output by the main unit are transmitted to the human body through the electrode pads.

[0095] Electrodes in physiotherapy devices are typically used in pairs, allowing current to pass through body tissues to form a channel, stimulating nerve fibers and thus relieving pain. Physiotherapy devices are categorized into single-channel and dual-channel types based on the number of output channels. In single-channel use, the device connects only one pair of electrodes, and the current flows along a specific path; for example, if a user has back pain, both electrodes are placed near the painful area on the back. In dual-channel use, the device has two independent outputs, each connected to a pair of electrodes. This means the device connects to two pairs of electrodes simultaneously, allowing for the treatment of two different areas at the same time. For example, one set of electrodes can be placed on the back, and the other on the legs. The current intensity, frequency, and waveform of each channel can be independently adjusted. Of course, physiotherapy devices with three or more channels are also available on the market.

[0096] Since the main unit of the physiotherapy device requires at least two electrode pads, it needs to be equipped with multiple electrode wires to connect the main unit to the multiple electrode pads. When there are many electrode wires, they are prone to tangling, which can damage the wires and make them messy and untidy, making it difficult for users to manage and resulting in a poor user experience.

[0097] Figure 1A and Figure 1B The diagram shows the structure of a physiotherapy device with two different interface methods. For example... Figure 1A As shown, the physiotherapy device 100 uses a safety socket 1 as the output interface for the electrical pulse stimulation signal, and additionally adds a USB interface 2 (or other power socket) as the charging interface, thus providing two interfaces. If the user uses the physiotherapy function while the physiotherapy device 100 is charging, that is, the charging interface and the output interface are used simultaneously, which may result in the charging interface and the electrode wires of the physiotherapy device being on the same circuit. The mains power and the human body being on the same circuit pose a safety hazard. To avoid the risk of the mains power and the human body being on the same circuit during the use of the physiotherapy device 100, such as... Figure 1BAs shown, the inventors of this application have combined the output interface and charging interface of the physiotherapy device 200 into one interface, such as a Type-C interface 3. This Type-C interface 3 can only connect the charging cable or the electrode wires of the physiotherapy device at the same time, avoiding the safety risks caused by the user using the physiotherapy device 200 while charging. The following will explain... Figure 1B The physiotherapy device 200 shown is called a single-interface physiotherapy device.

[0098] Figure 2 A schematic diagram of the main unit and electrode wires of a single-interface physiotherapy device is shown, as follows. Figure 2 As shown, the dual-channel single-interface physiotherapy device 200 only requires one physiotherapy electrode lead 4 with four electrode connectors, reducing costs and improving portability. However, such a physiotherapy electrode lead 4 also suffers from the problem of easy tangling between the wires. Figure 2 Taking the dual-channel single-interface physiotherapy device 200 as an example, for physiotherapy devices with three or more channels, there are more wires, which makes them more prone to tangling.

[0099] Figure 2 The electrode leads of the physiotherapy device are also equipped with a wire control module 24, which is used to perform one or more functions such as selecting treatment mode, adjusting current intensity, adjusting treatment frequency, controlling treatment time, and starting / stopping treatment. Alternatively, the electrode leads 4 may not have the wire control module 24, and the above functions can be performed via the operating host 10.

[0100] In view of this, this application provides an electrode wire for a physiotherapy device. A magnet magnetized along the axial direction of the electrode connector is provided at the electrode connector of the physiotherapy device electrode wire. The insulating shell of the electrode connector includes two end faces. The conductive part of the electrode connector is exposed on one end face, allowing it to mate with the electrode plate. A first area in the other end face is planar, and the contact surface of the conductive part of the electrode connector is also planar. Through this design, any two electrode connectors can be magnetically attracted to each other, and multiple electrode connectors can be stacked and magnetically attracted sequentially. This prevents the physiotherapy device electrode wire from tangling, reduces the risk of wire damage, and makes the wires neater and more organized during storage, thus improving the user experience.

[0101] Figures 3A to 3B The following are schematic diagrams illustrating the structures of electrode wires for several physiotherapy devices according to embodiments of this application, such as... Figures 3A to 3B As shown, each type of physiotherapy device electrode lead 20 includes at least one wire 21, a main unit connector 22, and at least one electrode connector 23.

[0102] Figure 3A The physiotherapy device electrode lead 20 includes a wire 21 and an electrode connector 23, and the main unit connector 22 is for connection with... Figure 1AThe safety socket 1 is compatible with the connector, and the electrode wires 20 of the physiotherapy device are suitable for... Figure 1A The physiotherapy device 100 is equipped with two interfaces.

[0103] Figure 3B The electrode leads 20 of the physiotherapy device include two wires 21 and two electrode connectors 23. The main unit connector 22 can be connected to... Figure 1A The safety socket 1 is compatible with the connector, at which point the electrode wire 20 of the physiotherapy device is suitable for... Figure 1A The physiotherapy device 100 is configured with two interfaces; the main unit connector 22 can also be connected to... Figure 1B The Type-C interface 3 is compatible with the connector, at which point the electrode wires 20 of the physiotherapy device are suitable for... Figure 1B The physiotherapy device 200 has a Type-C interface.

[0104] Figure 3C The physiotherapy device electrode leads 20 include four wires 21 and four electrode connectors 23, and the main unit connector 22 is for connecting to... Figure 1B The Type-C interface 3 adapter connector is suitable for the electrode wires 20 of this physiotherapy device. Figure 1B The physiotherapy device 200 has a Type-C interface.

[0105] When the host connector 22 is a connector adapted to the Type-C interface 3, an all-plastic Type-C male connector can be used to connect with the Type-C female connector of the host 10. Compared with the metal male connector with an insulating sleeve in related technologies, the all-plastic Type-C male connector is thinner and more aesthetically pleasing.

[0106] The electrode lead 20 of the physiotherapy device of this application may also include other numbers of wires 21 and electrode connectors 23, such as 3, 5, 6, 7, 8, etc. Figures 3A to 3C This is for illustrative purposes only and does not constitute a limitation on the number of wires 21 and electrode connectors 23 in this application.

[0107] Please continue reading. Figures 3A to 3B The main unit connector 22 and the electrode connector 23 are located at the two ends of the wire 21, respectively, with the main unit connector 22 located at the first end 21a of the wire and the electrode connector 23 located at the second end 21b of the wire. When using the physiotherapy device 200, the main unit connector 22 is electrically connected to the main unit 10 of the physiotherapy device 200, and the electrode connector 23 is connected to the electrode pad. The electrode pad is attached to the human skin, and the electrical pulse stimulation signal output by the main unit 10 is transmitted to the human body in sequence through the main unit connector 22, the wire 21, the electrode connector 23, and the electrode pad.

[0108] Figure 4 A partial structural schematic diagram of the electrode wires of the physiotherapy device according to an embodiment of this application is shown. Only the electrode connector 23 and part of the wire 21 are shown; the main unit connector is not shown. Figure 4As shown, the electrode connector 23 includes a conductive part 231 and an insulating shell 232. The insulating shell 232 can be manufactured by injection molding.

[0109] The conductive part 231 is electrically connected to the main unit connector via a wire 21. The conductive part 231 includes a contact surface 2311 for mating with the electrode sheet. An insulating shell 232 covers the conductive part 231, with the contact surface 2311 exposed, allowing it to mate with the electrode sheet. The mating method between the contact surface 2311 and the electrode sheet can be a snap-fit ​​connection or a magnetic connection. This application uses a magnetic connection as an example for explanation.

[0110] Figure 5 A partial structural cross-sectional view of the electrode wires of the physiotherapy device according to an embodiment of this application is shown. Figure 6 This paper shows a partially exploded structural diagram of the electrode wires of the physiotherapy device according to an embodiment of this application. Figure 7 This diagram shows a partially exploded view of the electrode wires of the physiotherapy device according to an embodiment of this application. Figures 5 to 7 As shown, a magnet 233 is disposed within the conductive part 231. The magnet 233 is magnetized along its axial direction, that is, along the first direction X in the figure. The axial direction (first direction X) of the magnet 233 is perpendicular to the contact surface 2311. The insulating shell 232 includes a first end face 232a and a second end face 232b opposite to each other along the first direction X. The contact surface 2311 is exposed on the first end face 232a. The first region in the second end face 232b ( Figure 5 The region within the continuous dashed circle and Figure 7 Both the honeycomb-filled area and the contact surface 2311 are planar, so that when the physiotherapy device electrode wire 20 is not in use, the first area can be magnetically connected to the contact surface 2311 of the other electrode connector, thereby facilitating the storage of the physiotherapy device electrode wire 20. If the first area and the contact surface 2311 are not planar, such as curved surfaces, the first area will not be able to magnetically connect to the contact surface 2311 of the other electrode connector.

[0111] When the electrode leads 20 of the physiotherapy device include multiple electrode connectors 23, the magnetic poles of the magnets 233 of each electrode connector 23 are installed in the same direction. For example, the N pole of the magnets 233 of each electrode connector 23 is close to the first end face 232a, and the S pole is close to the second end face 232b; or the N pole of the magnets 233 of each electrode connector 23 is close to the second end face 232b, and the S pole is close to the first end face 232a. In this way, two electrode connectors 23 can be magnetically connected by being placed in the same orientation. Otherwise, if two electrode connectors 23 are attracted in the same orientation, they will not be attracted because the like poles of the magnets repel each other.

[0112] The insulating housing 232 includes a first housing 2321 and a second housing 2322. The first housing 2321 is provided with a first snap-fit ​​portion 2323, and the second housing 2322 is provided with a second snap-fit ​​portion 2324. The first snap-fit ​​portion 2323 and the second snap-fit ​​portion 2324 are snapped together to fasten the first housing 2321 and the second housing 2322. By providing two housings and fastening them together to form the insulating housing 232, the assembly operation is convenient.

[0113] The first engaging portion 2323 and the second engaging portion 2324 can be a groove and a protrusion, respectively. For example, the first engaging portion 2323 can be an arc-shaped groove, and the second engaging portion 2324 can be an arc-shaped protrusion, with the shape and size of the arc-shaped groove and the arc-shaped protrusion matching each other. There can be multiple arc-shaped grooves and arc-shaped protrusions. In the embodiment shown in the figure, two arc-shaped grooves and two arc-shaped protrusions are provided. Alternatively, the first engaging portion 2323 can be an arc-shaped protrusion, and the second engaging portion 2324 can be an arc-shaped groove. The arc-shaped groove and protrusion make the engagement between the housings more secure.

[0114] The first housing 2321 has a through hole 2325 for accommodating the conductive part 231. During assembly, the conductive part 231 is placed in the through hole 2325, and then the first housing 2321 and the second housing 2322 are fastened together.

[0115] The first end face 232a of the insulating shell 232 is located on the first housing 2321, and the second end face 232b is located on the second housing 2322. The second end face 232b of the insulating shell 232 has a protrusion 2326, the top surface of which forms a first region. A groove 2327 is formed on the first end face 232a of the insulating shell 232. The shape and size of the groove 2327 are configured to engage with the protrusion 2326 of another electrode connector 23. As shown in the figure, both the protrusion 2326 and the groove 2327 have circular cross-sections, and their diameters are approximately the same. The diameter of the groove 2327 may be slightly larger than the diameter of the protrusion 2326, so that when the two electrode connectors 23 are magnetically attracted, the protrusion 2326 of one electrode connector 23 can be inserted into the groove 2327 of the other electrode connector 23. The circular cross-section of the protrusion 2326 and the groove 2327 facilitates the snap-fit ​​operation. When the two electrode connectors 23 are magnetically attracted, the protrusion 2326 can be inserted into the groove 2327 at any angle between the two electrode connectors 23, without having to place them at a specific angle. Of course, the cross-sections of the protrusion 2326 and the groove 2327 can also be other shapes, such as square, triangular, elliptical, etc.

[0116] The bottom surface of the groove 2327 is flush with the contact surface 2311, and the height of the protrusion 2326 is equal to the depth of the groove 2327. When the two electrode connectors 23 are magnetically attracted, the protrusion 2326 of one electrode connector 23 can fit perfectly into the groove 2327 of the other electrode connector 23, achieving seamless magnetic attraction. Furthermore, the overall size of the two electrode connectors 23 after magnetic connection is relatively small, reducing the space occupied in storage.

[0117] Magnet 233 is a toroidal shape. The toroidal design makes the magnetic field more concentrated, reduces magnetic leakage, and provides a more uniform magnetic field in the central region of the toroid.

[0118] In this application, the number of wires 21 is n, and the number of electrode connectors 23 is also n, where n is a positive integer greater than 1. The n electrode connectors 23 are electrically connected to the main unit connector 22 through the n wires 21 respectively. The physiotherapy device electrode leads 20 can be configured such that, in the non-use state, the n electrode connectors 23 are placed adjacent to each other, and in any two adjacent electrode connectors 23, the contact surface 2311 of one electrode connector 23 is magnetically connected to the first area of ​​the other electrode connector 23, so as to facilitate the storage of the physiotherapy device electrode leads 20.

[0119] Figure 8A A schematic diagram showing the state of the two electrode connectors before connection is shown. Figure 8B A schematic diagram showing the state after the two electrode connectors are connected is shown. Figure 8A As shown, the wires include a first wire 21a and a second wire 21b, and the electrode connectors include a first electrode connector 23a and a second electrode connector 23b. The conductive parts of the first electrode connector 23a and the second electrode connector 23b are electrically connected to the host connector through the first wire 21a and the second wire 21b, respectively. In the non-use state, moving the first electrode connector 23a and the second electrode connector 23b in the direction shown by the arrow in the figure to bring them closer together can achieve the following... Figure 8B As shown, the contact surface of the first electrode connector 23a and the first area of ​​the second electrode connector 23b are magnetically connected to facilitate the storage of the electrode wires of the physiotherapy device.

[0120] Figure 9A This diagram illustrates a pre-connection state of the four electrode connectors. Figure 9B A schematic diagram showing one possible connection state of the four electrode connectors is provided. Figure 9AAs shown, the wires include a first wire 21a, a second wire 21b, a third wire 21c, and a fourth wire 21d. The electrode connectors include a first electrode connector 23a, a second electrode connector 23b, a third electrode connector 23c, and a fourth electrode connector 23d. The conductive portions of the first electrode connector 23a, the second electrode connector 23b, the third electrode connector 23c, and the fourth electrode connector 23d are electrically connected to the host connector via the first wire 21a, the second wire 21b, the third wire 21c, and the fourth wire 21d, respectively. In the non-use state, moving the four electrode connectors in the direction shown by the arrows in the figure to bring them closer together can achieve the following: Figure 9B As shown, the contact surface of the first electrode connector 23a and the first area of ​​the second electrode connector 23b are magnetically connected, the contact surface of the second electrode connector 23b and the first area of ​​the third electrode connector 23c are magnetically connected, and the contact surface of the third electrode connector 23c and the first area of ​​the fourth electrode connector 23d are magnetically connected, so as to facilitate the storage of the electrode wires of the physiotherapy device.

[0121] Figure 10A This diagram illustrates another pre-connection state of the four electrode connectors. Figure 10B A schematic diagram showing another connection configuration for the four electrode connectors is provided. Please refer to [link / reference]. Figure 10A By bringing the four electrode connectors together in pairs along the direction indicated by the arrows in the diagram, the following can be obtained: Figure 10B In the state shown, the contact surface of the first electrode connector 23a and the first region of the second electrode connector 23b are magnetically connected, and the contact surface of the third electrode connector 23c and the first region of the fourth electrode connector 23d are magnetically connected, forming a pair of electrode connectors for single-channel use. That is, the first electrode connector 23a and the second electrode connector 23b constitute one electrode connector in a pair of electrode connectors for single-channel use, and the third electrode connector 23c and the fourth electrode connector 23d constitute the other electrode connector in a pair of electrode connectors for single-channel use.

[0122] In summary, the electrode leads of the physiotherapy device in this embodiment can be stacked and attracted together when not in use, preventing the electrode leads from becoming tangled and scattered. When in use, for example, for a physiotherapy device electrode lead with four wires and four electrode leads, the electrode leads are magnetically attracted in pairs to form a single electrode pair, meeting the single-channel usage requirement and preventing some wires from being scattered during use.

[0123] Figure 11 A structural block diagram of a physiotherapy device according to an embodiment of this application is shown, such as... Figure 11 As shown, the physiotherapy device 200 includes the physiotherapy device electrode wire 20 and the main unit 10 of any of the aforementioned embodiments.

[0124] In some embodiments, the number of at least one wire in the electrode leads 20 of the physiotherapy device is n, and the number of at least one electrode connector is n, where n is a positive integer greater than 1. The main unit includes a controller, n switching units, and n current detection units. The n switching units correspond to the n electrode connectors, and the n current detection units correspond to the n electrode connectors. The n electrode connectors include first electrode connectors, the n switching units include first switching units corresponding to the first electrode connectors, and the n current detection units include first current detection units corresponding to the first electrode connectors. The first switching units are connected to the power supply terminal of the main unit, and the other switching units are grounded. The controller is used to control the closing of the first switching units and the closing of target switching units among the other switching units. It detects the current at the first electrode connector through the first current detection unit, or detects the current at the target electrode connector corresponding to the target current detection unit through the target current detection unit among the n current detection units, to determine whether a circuit is formed between the first electrode connector and the target electrode connector. The target electrode connector corresponds to a target switching unit.

[0125] The controller can be a microcontroller, microcontroller unit (MCU), programmable logic controller (PLC), digital signal processor (DSP), field-programmable gate array (FPGA), system on chip (SoC), etc., with MCU being the preferred choice.

[0126] Figure 12 This illustration shows a structural schematic diagram of a physiotherapy device according to an embodiment of this application. The wires include a first wire, a second wire, and a third wire, as shown below. Figure 12 As shown, the electrode connector includes a first electrode connector, a second electrode connector, and a third electrode connector.

[0127] The main unit includes a controller, a first switching unit, a fourth switching unit, a sixth switching unit, a first current detection unit, a second current detection unit, and a third current detection unit. The first, fourth, and sixth switching units correspond to and are connected to the first, second, and third electrode connectors, respectively. The first, second, and third current detection units also correspond to and are connected to the first, second, and third electrode connectors, respectively. All the aforementioned switching units and current detection units are connected to the controller. The first switching unit is connected to the main unit's power supply terminal, while the fourth and sixth switching units are grounded.

[0128] The controller is used to control the closing of the first switch unit and the closing of the target switch unit in the fourth and sixth switch units. It detects the current at the first electrode connector through the first current detection unit, or detects the current at the target electrode connector corresponding to the target current detection unit through the target current detection unit in the second and third current detection units, so as to determine whether the first electrode connector and the target electrode connector form a circuit. The target electrode connector corresponds to the target switch unit.

[0129] Figure 13 This illustration shows a structural schematic diagram of another physiotherapy device according to an embodiment of this application. The wires include a first wire, a second wire, a third wire, and a fourth wire, as shown below. Figure 13 As shown, the electrode connectors include a first electrode connector, a second electrode connector, a third electrode connector, and a fourth electrode connector.

[0130] The main unit includes a controller, a first switching unit, a fourth switching unit, a sixth switching unit, an eighth switching unit, a first current detection unit, a second current detection unit, a third current detection unit, and a fourth current detection unit. The first, fourth, sixth, and eighth switching units correspond to the first, second, third, and fourth electrode connectors, respectively, and are connected to them. The first, second, third, and fourth current detection units also correspond to the first, second, third, and fourth electrode connectors, respectively, and are connected to them. The first switching unit is connected to the main unit's power supply terminal, while the fourth, sixth, and eighth switching units are grounded.

[0131] The controller is used to control the closing of the first switch unit and the closing of the target switch unit among the fourth, sixth and eighth switch units. It detects the current at the first electrode connector through the first current detection unit, or detects the current at the target electrode connector corresponding to the target current detection unit through the target current detection unit among the second, third and fourth current detection units, in order to determine whether the first electrode connector and the target electrode connector form a circuit. The target electrode connector corresponds to the target switch unit.

[0132] Figure 14 This illustration shows a structural schematic diagram of another physiotherapy device according to an embodiment of this application. The wires include a first wire, a second wire, a third wire, and a fourth wire, as shown below. Figure 14 As shown, the electrode connectors include a first electrode connector, a second electrode connector, a third electrode connector, and a fourth electrode connector.

[0133] The main unit includes a controller, a first switch, a third switch, a fourth switch, a fifth switch, a sixth switch, an eighth switch, a first current detection unit, a second current detection unit, a third current detection unit, and a fourth current detection unit.

[0134] The first electrode connector is connected to the power supply terminal of the host through the first switch. The second electrode connector is connected to the power supply terminal of the host through the third switch. The second electrode connector is also grounded through the fourth switch. The third electrode connector is connected to the power supply terminal of the host through the fifth switch. The third electrode connector is also grounded through the sixth switch. The fourth electrode connector is grounded through the eighth switch.

[0135] The first current detection unit, the second current detection unit, the third current detection unit, and the fourth current detection unit are respectively connected to the first electrode connector, the second electrode connector, the third electrode connector, and the fourth electrode connector.

[0136] The controller is used for:

[0137] The system controls the first and fourth switches to close, and detects the current at the first electrode connector through the first current detection unit or the current at the second electrode connector through the second current detection unit to determine whether a circuit is formed between the first and second electrode connectors.

[0138] The system controls the first and sixth switches to close, and detects the current at the first electrode connector through the first current detection unit or the current at the third electrode connector through the third current detection unit to determine whether the first electrode connector and the third electrode connector form a circuit.

[0139] The system controls the first switch and the eighth switch to close, and detects the current at the first electrode connector through the first current detection unit or the current at the fourth electrode connector through the fourth current detection unit to determine whether the first electrode connector and the fourth electrode connector form a circuit.

[0140] The third and sixth switches are controlled to close, and the current at the second electrode connector is detected by the second current detection unit or the current at the third electrode connector is detected by the third current detection unit to determine whether the second electrode connector and the third electrode connector form a circuit.

[0141] The third and eighth switches are controlled to close, and the current at the second electrode connector is detected by the second current detection unit or the current at the fourth electrode connector by the fourth current detection unit, so as to determine whether the second electrode connector and the fourth electrode connector form a circuit.

[0142] The fifth and eighth switches are controlled to close, and the current at the third electrode connector is detected by the third current detection unit, or the current at the fourth electrode connector is detected by the fourth current detection unit, in order to determine whether the third electrode connector and the fourth electrode connector form a circuit.

[0143] Please continue reading. Figure 14 A first current control unit is also connected between the first switch and the power supply terminal of the host. When the first electrode connector forms a first path, a second path, or a third path with the second electrode connector, the third electrode connector, or the fourth electrode connector, the controller is used to control the current intensity of the first path, the second path, or the third path through the first current control unit.

[0144] A second current control unit is also connected between the third switch and the power supply terminal of the host. When the second electrode connector forms a fourth or fifth path with the third or fourth electrode connector, the controller is used to control the current intensity of the fourth or fifth path through the second current control unit.

[0145] A third current control unit is also connected between the fourth switch and the power supply terminal of the host. When the third electrode connector and the fourth electrode connector form the sixth path, the controller is used to control the current intensity of the sixth path through the third current control unit.

[0146] Please continue reading. Figure 14 The main unit also includes a second switch and a seventh switch. The first electrode connector is grounded through the second switch, and the fourth electrode connector is connected to the power supply terminal of the main unit through the seventh switch.

[0147] When the first electrode connector and the second electrode connector form a first circuit, the controller provides bidirectional pulses to the first circuit by alternately controlling the closing of the first set of switches and the closing of the second set of switches. The first set of switches includes a first switch and a fourth switch, and the second set of switches includes a second switch and a third switch.

[0148] When the first electrode connector and the third electrode connector form a second path, the controller provides bidirectional pulses to the second path by alternately controlling the closing of the third group of switches and the closing of the fourth group of switches. The third group of switches includes the first switch and the sixth switch, and the fourth group of switches includes the second switch and the fifth switch.

[0149] When the first electrode connector and the fourth electrode connector form the third path, the controller provides bidirectional pulses to the third path by alternately controlling the closing of the fifth group of switches and the sixth group of switches. The fifth group of switches includes the first switch and the eighth switch, and the sixth group of switches includes the second switch and the seventh switch.

[0150] When the second electrode connector and the third electrode connector form the fourth path, the controller provides bidirectional pulses to the fourth path by alternately controlling the closing of the seventh group of switches and the closing of the eighth group of switches. The seventh group of switches includes the third and sixth switches, and the eighth group of switches includes the fourth and fifth switches.

[0151] When the second electrode connector and the fourth electrode connector form the fifth path, the controller provides bidirectional pulses to the fifth path by alternately controlling the closing of the ninth group of switches and the tenth group of switches. The ninth group of switches includes the third and eighth switches, and the tenth group of switches includes the fourth and seventh switches.

[0152] When the third electrode connector and the fourth electrode connector form the sixth channel, the controller provides bidirectional pulses to the sixth channel by alternately controlling the closing of the eleventh group of switches and the twelfth group of switches. The eleventh group of switches includes the fifth and eighth switches, and the twelfth group of switches includes the sixth and seventh switches.

[0153] Figures 15A to 15D The circuit diagram of the pathway detection circuit of the physiotherapy device according to an embodiment of this application is shown. The diagram is illustrated by taking the electrode wires of the physiotherapy device, which include four wires and four electrode connectors, as an example. Figure 15A For the circuit related to the first electrode connector (marked as electrode 1# in the figure), Figure 15B For the circuit related to the second electrode connector (marked as electrode 2# in the figure), Figure 15C For the circuit related to the third electrode connector (marked as electrode 3# in the diagram), Figure 15D This is the circuit associated with the fourth electrode connector (marked as electrode 4# in the diagram).

[0154] like Figures 15A to 15D As shown, the circuit components of each switch are identical. The following explanation, using the first switch as an example, illustrates the identical structure and connection relationships of each switch. Figure 15A As shown, the first switch includes a first resistor R3, a first transistor Q2, a second resistor R2, and a second transistor Q5. One end of the first resistor R3 is connected to the controller (connected to the MCU_SW1 pin of the controller), and the other end is connected to the base of the first transistor Q2. The collector of the first transistor Q2 is connected to one end of the second resistor R2, and the emitter of the first transistor Q2 is grounded. The other end of the second resistor R2 is connected to the base of the second transistor Q5.

[0155] like Figure 15AAs shown, for the first switch, the emitter of the second transistor Q5 is connected to the power supply terminal VCC of the host through the first current control unit, and the collector of the second transistor Q5 is connected to the first electrode connector (electrode 1#). For the second switch, the emitter of the second transistor Q6 is connected to the first electrode connector (electrode 1#), and the collector of the second transistor Q6 is grounded through the second current detection unit.

[0156] like Figure 15B As shown, for the third switch, the emitter of the second transistor Q11 is connected to the power supply terminal VCC of the host through the second current control unit, and the collector of the second transistor Q11 is connected to the second electrode connector (electrode 2#). For the fourth switch, the emitter of the second transistor Q12 is connected to the second electrode connector (electrode 2#), and the collector of the second transistor Q12 is grounded through the second current detection unit.

[0157] like Figure 15C As shown, for the fifth switch, the emitter of the second transistor Q17 is connected to the power supply terminal VCC of the host through the third current control unit, and the collector of the second transistor Q17 is connected to the third electrode connector (electrode 3#). For the sixth switch, the emitter of the second transistor Q18 is connected to the third electrode connector (electrode 3#), and the collector of the second transistor Q18 is grounded through the third current detection unit.

[0158] like Figure 15D As shown, for the seventh switch, the emitter of the second transistor Q23 is connected to the power supply terminal VCC of the host through the third current control unit, and the collector of the second transistor Q23 is connected to the fourth electrode connector (electrode 4#). For the eighth switch, the emitter of the second transistor Q24 is connected to the fourth electrode connector (electrode 4#), and the collector of the second transistor Q24 is grounded through the fourth current detection unit.

[0159] Regarding the working principle of the first switch, the controller controls the conduction and cutoff of the first transistor Q2 through the MCU_SW1 signal. When the first transistor Q2 is on, the base of the second transistor Q5 receives current through the second resistor R2, and the second transistor Q5 conducts, connecting electrode 1# to the power supply terminal VCC. When the first transistor Q2 is off, the second transistor Q5 is off, and electrode 1# is disconnected from the power supply terminal VCC. The first resistor R3 serves as a current limiter and protection, ensuring that the first transistor Q2 operates safely and reliably under the control of the controller's control signal.

[0160] Regarding the working principle of the second switch, the controller controls the conduction and cutoff of the first transistor Q3 via the MCU_SW2 signal. When the first transistor Q3 is on, the base of the second transistor Q6 receives current through the second resistor R4, the second transistor Q6 is on, and the electrode 1# connection point is grounded. When the first transistor Q3 is off, the second transistor Q6 is off, and the electrode 1# connection point is disconnected from ground. The first resistor R5 serves as a current limiter and protection, ensuring that the first transistor Q3 operates safely and reliably under the control of the controller's control signal.

[0161] The circuit structure of the current detection unit is described below.

[0162] The first, second, third, and fourth current detection units all have the same circuit components. Taking the first current detection unit as an example, the identical structure and connection relationships of each current detection unit will be explained. Figure 15A As shown, the first current detection unit includes a third transistor Q4, a third resistor R6, a fourth resistor R7, and a diode D1. The collector of the third transistor Q4 is connected to the controller (connected to the MCU_CURRENT1# pin of the controller), the emitter of the third transistor Q4 is grounded, the base of the third transistor Q4 is connected to one end of the third resistor R6 and one end of the fourth resistor R7, the other end of the third resistor R6 is grounded, the other end of the fourth resistor R7 is connected to the other end of the third resistor R6 and the anode of the diode D1, and the cathode of the diode D1 is connected to the first electrode connector (electrode 1#) corresponding to the first current detection unit. Diode D1 is a Zener diode.

[0163] The current detection unit is used to detect whether current flows through the electrode connection points. For example, when current flows through electrode 1# connection point, the third resistor R6 and the fourth resistor R7 form a voltage divider circuit, which divides the voltage at electrode 1# connection point and sends it to the base of the third transistor Q4. The third transistor Q4 conducts, and current flows through the emitter and collector of the third transistor Q4. The controller detects the presence of current through the MCU_CURRENT1# signal. Diode D1 is used to protect the base of the third transistor Q4 from overvoltage damage.

[0164] The circuit structure of the current control unit is described below.

[0165] In the first, second, third, and fourth current control units, the circuit components are identical. Taking the first current control unit as an example, the identical structure and connection relationships of each current control unit will be explained. Figure 15AAs shown, the first current control unit includes a resistor R1, a transistor Q1, an inductor U1, a diode U2, and a capacitor C1, which is a polarized capacitor. One end of the resistor R1 is connected to the controller (connected to the MCU_PWM1 pin of the controller), and the other end of the resistor R1 is connected to the base of the transistor Q1. One end of the inductor U1 is connected to the power supply terminal VCC, and the other end is connected to the collector of the transistor Q1 and the anode of the diode U2. The cathode of the diode U2 is connected to the anode of the capacitor C1 and the emitter of the second transistor Q5. The emitter of the transistor Q1 and the cathode of the capacitor C1 are grounded.

[0166] The current control unit controls the current intensity output to the electrode connection point. Inductor U1 and diode U2 form a boost or buck circuit to stabilize the current. Transistor Q1 acts as a switch, controlled by the MCU_PWM1 signal output by the controller to turn it on or off, thereby regulating the output current. When transistor Q1 is on, inductor U1 stores energy; when transistor Q1 is off, inductor U1 releases the stored energy, supplying power to electrode 1# connection point through diode U2. This alternating on and off process achieves stable current output. The on-time of transistor Q1 determines the period of energy storage and release inductor U1. By adjusting the duty cycle (the ratio of on-time to the total period) of the MCU_PWM1 signal, the output current can be adjusted. Capacitor C1 is used for filtering, removing high-frequency noise, ensuring the stability of the output current, and providing a smooth output current. The following describes the process of... Figures 15A to 15D The pathway detection process of the physiotherapy device with the shown pathway detection circuit is explained. Figures 15A to 15D The circuit structure is simplified to obtain Figure 16 The circuit diagram is shown. In the circuit related to the first electrode connector, 1# is the first electrode connector, switch S1 is the first switch, switch S2 is the second switch, VDD is the power supply terminal, and GND is the ground. The corresponding relationships of the circuits related to the second to fourth electrode connectors are similar.

[0167] Please see Figure 16 After the main unit of the physiotherapy device is turned on, its controller performs the following operations:

[0168] S101, control switch S1 is closed, and switches S4, S6 and S8 are closed in sequence to detect the current flowing through the connection point of electrode 1, so as to detect whether the connection point of electrode 1 forms a circuit with the connection points of electrodes 2, 3 and 4 respectively.

[0169] When switches S1 and S4 are closed, if a current is detected, it indicates that a conductive path has been formed between the connection points of electrodes 1# and 2# through the skin. These two electrodes can act as a single channel, transmitting electrical pulse stimulation signals to either electrode 1# or 2#. If no current is detected, it indicates that a conductive path has not been formed between the connection points of electrodes 1# and 2#, and electrical pulse stimulation signals cannot be transmitted to either electrode 1# or 2#. Detecting the current flowing through the connection point of electrode 1# and / or the current flowing through the connection point of electrode 2# can determine whether a conductive path has been formed between the connection points of electrodes 1# and 2#.

[0170] After checking whether a conductive path has been formed at the connection points of electrodes #1 and #2, keep switch S1 closed, open switch S4, and close switch S6. If current is detected when switches S1 and S6 are closed, it indicates that a conductive path has been formed between the connection points of electrodes #1 and #3 through the skin, and the two electrodes can act as a single channel, transmitting electrical pulse stimulation signals to either electrode #1 or #3. If no current is detected, it indicates that a conductive path has not been formed between the connection points of electrodes #1 and #3, and electrical pulse stimulation signals cannot be transmitted to either electrode #1 or #3. Detecting the current flowing through the connection point of electrode #1 and / or the current flowing through the connection point of electrode #3 can both determine whether a conductive path has been formed between the connection points of electrodes #1 and #3.

[0171] After checking whether a conductive path has been formed at the connection points of electrodes #1 and #3, keep switch S1 closed, open switch S6, and close switch S8. If current is detected when switches S1 and S8 are closed, it indicates that a conductive path has been formed between the connection points of electrodes #1 and #4 through the skin, and these two electrodes can act as a single channel, transmitting electrical pulse stimulation signals to either electrode #1 or #4. If no current is detected, it indicates that a conductive path has not been formed between the connection points of electrodes #1 and #4, and electrical pulse stimulation signals cannot be transmitted to either electrode #1 or #4. Detecting the current flowing through the connection point of electrode #1 and / or the current flowing through the connection point of electrode #4 can both determine whether a conductive path has been formed between the connection points of electrodes #1 and #4.

[0172] S102, control switch S3 is closed, and switches S6 and S8 are closed in sequence to detect the current flowing through the connection point of electrode #2, so as to detect whether the connection point of electrode #2 forms a circuit with the connection points of electrodes #3 and #4 respectively.

[0173] After checking whether the connection point of electrode #1 forms a circuit with the connection points of electrodes #2, #3, and #4 respectively, disconnect switches S1 and S8, and then close switches S3 and S6.

[0174] When switches S3 and S6 are closed, if a current is detected, it indicates that a conductive path has been formed between the connection points of electrodes #2 and #3 through the skin. These two electrodes can act as a single channel, transmitting electrical pulse stimulation signals to either electrode #2 or #3. If no current is detected, it indicates that a conductive path has not been formed between the connection points of electrodes #2 and #3, and electrical pulse stimulation signals cannot be transmitted to either electrode #2 or #3. Detecting the current flowing through the connection point of electrode #2 and / or the current flowing through the connection point of electrode #3 can determine whether a conductive path has been formed between the connection points of electrodes #2 and #3.

[0175] After checking whether a conductive path has been formed at the connection points of electrodes #2 and #3, keep switch S3 closed, open switch S6, and close switch S8. If current is detected when switches S3 and S8 are closed, it indicates that a conductive path has been formed between the connection points of electrodes #2 and #4 through the skin, and these two electrodes can act as a single channel, transmitting electrical pulse stimulation signals to either electrode #2 or #4. If no current is detected, it indicates that a conductive path has not been formed between the connection points of electrodes #2 and #4, and electrical pulse stimulation signals cannot be transmitted to either electrode #2 or #4. Detecting the current flowing through the connection point of electrode #2 and / or the current flowing through the connection point of electrode #4 can both determine whether a conductive path has been formed between the connection points of electrodes #2 and #4.

[0176] S103 controls the closing of switch S5 and the closing of switch S8 to detect the current flowing through the connection point of electrode #3.

[0177] After checking whether the connection point of electrode #2 forms a circuit with the connection points of electrodes #3 and #4 respectively, disconnect switches S3 and S8, and then close switches S5 and S8.

[0178] When switches S5 and S8 are closed, if a current is detected, it indicates that a conductive path has been formed between the connection points of electrodes #3 and #4 through the skin. These two electrodes can then act as a single channel, transmitting electrical pulse stimulation signals to either electrode #3 or #4. If no current is detected, it indicates that a conductive path has not been formed between the connection points of electrodes #3 and #4, and electrical pulse stimulation signals cannot be transmitted to either electrode #3 or #4. This step can also detect the current flowing through the connection point of electrode #4 to determine whether a conductive path has been formed between the connection points of electrodes #3 and #4.

[0179] After determining the two electrode connectors that form the circuit through the above steps, an electrical pulse stimulation signal can be output to the path formed by these two electrode connectors.

[0180] For example, such as Figure 17As shown, the electrode pads connected to electrode 1# and electrode 2# are attached to the human body, while the electrode pads connected to electrode 3# and electrode 4# (electrode pads within the dashed box) are not attached to the human body. After testing confirms that a circuit is formed at the connection points of electrode 1# and electrode 2#, the two sets of switches (switches S1 and S4, switches S2 and S3) are alternately closed. For example, within the first time period, switches S1 and S4 are closed, outputting a positive pulse; in the subsequent second time period, switches S2 and S3 are closed, outputting a reverse pulse, thus alternately outputting positive and negative pulses. Alternatively, one set of switches can be kept continuously closed, outputting a unidirectional pulse. The main unit of the physiotherapy device outputs electrical pulse stimulation signals according to the stimulation mode configured in the device. Figure 17 Electrode connectors #3 and #4, which are not attached to the human body, can be connected magnetically.

[0181] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An electrode lead for a physiotherapy device, characterized in that, include: At least one wire; A main unit connector, located at the first end of the at least one wire, is used for electrical connection to the main unit of the physiotherapy device; as well as At least one electrode connector is located at the second end of the at least one wire. The at least one electrode connector includes an insulating shell and a conductive portion. The conductive portion is electrically connected to the host connector via the at least one wire. The conductive portion includes a contact surface for mating with an electrode plate. The insulating shell covers the conductive portion, and the contact surface is exposed. A magnet is disposed inside the conductive part, and the magnet is magnetized along the axial direction of the magnet. The axial direction of the magnet is perpendicular to the contact surface. The insulating shell includes a first end face and a second end face that are opposite to each other along the axial direction of the magnet. The contact surface is exposed on the first end face. The first region in the second end face and the contact surface are both planar. The first region can be magnetically connected to the contact surface of another electrode connector. The magnetic poles of the magnets of each electrode connector are installed in the same direction.

2. The electrode wire of the physiotherapy device according to claim 1, characterized in that, The second end face of the insulating shell has a protrusion, the top surface of the protrusion forms the first region, and a groove is formed on the first end face of the insulating shell, the shape and size of the groove being configured to engage with the protrusion of another electrode connector.

3. The electrode wire of the physiotherapy device according to claim 2, characterized in that, The cross-sections of the protrusion and the groove are both circular; or, the cross-sections of the protrusion and the groove are both square; or, the cross-sections of the protrusion and the groove are both triangular; or, the cross-sections of the protrusion and the groove are both elliptical.

4. The electrode wire of the physiotherapy device according to claim 2, characterized in that, The bottom surface of the groove is flush with the contact surface, and the height of the protrusion is equal to the depth of the groove.

5. The electrode wire of the physiotherapy device according to claim 1, characterized in that, The insulating outer shell includes a first shell and a second shell. The first shell is provided with a first snap-fit ​​portion, and the second shell is provided with a second snap-fit ​​portion. The first snap-fit ​​portion and the second snap-fit ​​portion snap-fit ​​together to fasten the first shell and the second shell. The first snap-fit ​​portion is an arc-shaped groove, and the second snap-fit ​​portion is an arc-shaped protrusion. The arc-shaped groove and the arc-shaped protrusion are adapted to each other in shape and size.

6. The electrode wire of the physiotherapy device according to claim 5, characterized in that, The first housing has a through hole for accommodating the conductive part.

7. The electrode wire of the physiotherapy device according to claim 1, characterized in that, The magnet is a ring.

8. The electrode wire of the physiotherapy device according to claim 1, characterized in that, The number of the at least one wire is n, the number of the at least one electrode connector is n, where n is a positive integer greater than 1, and the n electrode connectors are electrically connected to the host connector through n wires respectively. The electrode wires of the physiotherapy device can be configured such that, in the non-use state, the n electrode connectors are placed adjacent to each other, and in any two adjacent electrode connectors, the contact surface of one electrode connector is magnetically connected to the first area of ​​the other electrode connector, so as to store the electrode wires of the physiotherapy device.

9. The electrode wire of the physiotherapy device according to claim 1, characterized in that, The at least one wire includes a first wire, a second wire, a third wire, and a fourth wire, and the at least one electrode connector includes a first electrode connector, a second electrode connector, a third electrode connector, and a fourth electrode connector. The conductive portions of the first electrode connector, the second electrode connector, the third electrode connector, and the fourth electrode connector are electrically connected to the host connector through the first wire, the second wire, the third wire, and the fourth wire, respectively. The electrode wires of the physiotherapy device can be configured such that the contact surface of the first electrode connector and the first area of ​​the second electrode connector are magnetically connected, and the contact surface of the third electrode connector and the first area of ​​the fourth electrode connector are magnetically connected, so as to obtain a pair of electrode connectors for single-channel use. The electrode wires of the physiotherapy device can also be configured such that, in the non-use state, the contact surface of the first electrode connector and the first area of ​​the second electrode connector are magnetically connected, the contact surface of the second electrode connector and the first area of ​​the third electrode connector are magnetically connected, and the contact surface of the third electrode connector and the first area of ​​the fourth electrode connector are magnetically connected, so as to store the electrode wires of the physiotherapy device.

10. A physiotherapy device, characterized in that, include: The physiotherapy device electrode leads as described in any one of claims 1-9, and Host.

Images