Intermediate frequency pulse physiotherapy apparatus with flexible electrode

Abstract

This invention discloses a mid-frequency pulse therapy device with flexible electrodes, comprising: a main unit, a flexible electrode unit, a wearable mechanism, and a limb adaptation mechanism; the main unit is used to generate mid-frequency pulse electrical signals; the flexible electrode unit is electrically connected to the main unit and is used to attach to human skin to introduce the mid-frequency pulse electrical signals into the human body; the wearable mechanism is used to fix the flexible electrode unit to a human limb; the flexible electrode unit is connected to the wearable mechanism through the limb adaptation mechanism, which is used to maintain the contact state between the flexible electrode unit and the skin during pulse therapy. This device solves the problem of insufficient connection reliability in existing mid-frequency pulse therapy devices.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a medium-frequency pulse physiotherapy device with flexible electrodes. Background Technology

[0002] Medium-frequency pulse therapy devices effectively promote local blood circulation, relieve muscle spasms, and alleviate pain by applying current of specific frequency and waveform to the human body. They are widely used in rehabilitation medicine and chronic pain management. Their basic components include a main unit, lead wires, and electrode pads that contact the skin. The electrodes, as the current output terminals, must be stably attached to the treatment area to ensure effective energy transfer.

[0003] However, existing intermediate-frequency pulse physiotherapy devices generally suffer from insufficient connection reliability. Traditional electrodes mostly adopt rigid or semi-rigid structures, which are prone to slippage, displacement, or local detachment during changes in patient position, limb movement, or prolonged treatment because they cannot adapt to changes in skin curvature or resist external shear forces. This leads to unstable output current and treatment area displacement, which not only affects the physiotherapy effect but may also cause discomfort due to uneven local current density. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the purpose of this invention is to provide a medium-frequency pulse physiotherapy device with flexible electrodes, which solves the problem of insufficient connection reliability of existing medium-frequency pulse physiotherapy devices.

[0005] The objective of this invention is achieved through the following technical solution:

[0006] A medium-frequency pulse physiotherapy device with flexible electrodes includes: a main unit, a flexible electrode unit, a wearable mechanism, and a limb adaptation mechanism;

[0007] The host computer is used to generate intermediate frequency pulse electrical signals;

[0008] The flexible electrode unit is electrically connected to the host and is used to attach to human skin to introduce intermediate frequency pulse electrical signals into the human body.

[0009] The wearable mechanism is used to fix the flexible electrode unit to a human limb;

[0010] The flexible electrode unit is connected to the wearable mechanism through the limb adaptation mechanism, which is used to maintain the flexible electrode unit in contact with the skin during pulse therapy.

[0011] Furthermore, the wearable mechanism includes a first base and a second base, the hinged ends of the first base and the second base being hinged together so that the free end of the second base can swing relative to the first base along a vertical plane; the wearable mechanism is provided with a locking structure, which is used to lock the free end of the second base to the free end of the first base; when the first base and the second base are fixed relative to each other by the locking structure, they together form a wearing cavity for accommodating human limbs.

[0012] Furthermore, the locking structure includes a first through hole in the first base, a second through hole in the second base, and a limiting rod; the inner wall of the first through hole is provided with a plurality of first ratchet grooves, the plurality of first ratchet grooves are spaced apart along the axial direction of the first through hole and linearly distributed, the first ratchet grooves extend circumferentially around the first through hole and form an open-loop structure, so that the first ratchet groove has a first opening; the outer wall of the limiting rod is provided with a pawl, the pawl is adapted to the first ratchet groove; the first ratchet groove is used to prevent the pawl from moving away from the first through hole, and the limiting rod can rotate circumferentially along the first through hole so that the pawl is aligned with the first opening, thereby allowing the limiting rod to disengage axially from the first through hole.

[0013] Furthermore, the inner wall of the second through hole is provided with a plurality of second ratchet grooves, which are spaced apart axially and linearly distributed along the second through hole. The second ratchet grooves extend circumferentially around the second through hole and form an open-loop structure, so that the second ratchet groove has a second opening. The pawl is adapted to the second ratchet groove, which is used to prevent the pawl from moving away from the second through hole. The limiting rod can rotate circumferentially along the second through hole so that the pawl is aligned with the second opening, thereby allowing the limiting rod to disengage axially from the second through hole.

[0014] Furthermore, the outer wall of the limiting rod is provided with multiple pawls, which are spaced apart and linearly distributed along the axial direction of the limiting rod.

[0015] Furthermore, the limb adaptation mechanism includes a plurality of first adaptation units spaced apart along the extension direction of the first base; each first adaptation unit includes: a guide seat, a conductive element, and an elastic element; the guide seat is disposed on a side wall of the first base facing the wearing cavity, and has a guide hole extending in a direction toward the center of the wearing cavity; at least a portion of the conductive element extends into the guide hole and forms a retractable connection with the guide seat, one end of the conductive element is electrically connected to the host, and the other end is electrically connected to the flexible electrode unit; the elastic element is sleeved on the guide seat, and both ends of the elastic element abut against the first base and the flexible electrode unit respectively, and is used to provide elastic force to the flexible electrode unit toward the center of the wearing cavity.

[0016] Furthermore, the limb adaptation mechanism includes a plurality of second adaptation units spaced apart along the extension direction of the second base; each second adaptation unit includes: a guide seat, a conductive element, and an elastic element; the guide seat is disposed on a side wall of the second base facing the wearing cavity, and has a guide hole extending in a direction toward the center of the wearing cavity; at least a portion of the conductive element extends into the guide hole and forms a retractable connection with the guide seat, one end of the conductive element is electrically connected to the host, and the other end is electrically connected to the flexible electrode unit; the elastic element is sleeved on the guide seat, and both ends of the elastic element abut against the second base and the flexible electrode unit respectively, and is used to provide elastic force to the flexible electrode unit toward the center of the wearing cavity.

[0017] Furthermore, the elastic element is a compression spring.

[0018] Furthermore, the guide seat is integrally formed with the first base and / or the second base.

[0019] Furthermore, one end of the limiting rod is provided with an operating handle.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1. Based on the flexible electrode unit, it is electrically connected to the host and is used to attach to human skin to introduce intermediate frequency pulse electrical signals into the human body. Therefore, it can form a large-area, low-impedance electrical contact interface with the skin, avoiding stinging or burning sensations caused by local current concentration, and providing a reliable electrical coupling basis for the safe and uniform introduction of intermediate frequency pulse signals.

[0022] 2. Since the wearable mechanism is used to fix the flexible electrode unit to the human limb, the overall positioning of the physiotherapy device on the limb can be achieved without relying on external adhesion methods, effectively preventing the device from slipping or accidentally falling off during use, and providing a reliable mechanical support for the continuous contact between the electrode and the skin and stable physiotherapy.

[0023] 3. Based on the flexible electrode unit being connected to the wearable mechanism through the limb adaptation mechanism, the limb adaptation mechanism is used to maintain the contact state between the flexible electrode unit and the skin during pulse therapy. Therefore, even under dynamic conditions such as limb movement, muscle contraction, or sweating, the effective contact between the electrode and the skin can still be maintained through structural self-adaptation, which solves the technical problem of insufficient connection reliability caused by the easy interference of the contact state between the electrode and the skin in existing medium-frequency pulse therapy devices.

[0024] 4. Based on the wearable mechanism used to fix the flexible electrode unit to the human limb, and the flexible electrode unit connected to the wearable mechanism through the limb adaptation mechanism, the limb adaptation mechanism is used to maintain the contact state between the flexible electrode unit and the skin during pulse physiotherapy. Therefore, the wearable mechanism ensures the macroscopic position stability of the physiotherapy device on the limb, while the limb adaptation mechanism allows the electrode unit to be locally adjusted with the micro-movement of the skin. The two work together to make the physiotherapy device have both overall stability and local fit in dynamic use scenarios, providing structural compatibility guarantee for continuous treatment in complex movement states.

[0025] 5. The host is used to generate intermediate frequency pulse electrical signals; the flexible electrode unit is electrically connected to the host and is used to attach to human skin to introduce intermediate frequency pulse electrical signals into the human body; the wearable mechanism is used to fix the flexible electrode unit to the human limb; and the flexible electrode unit is connected to the wearable mechanism through the limb adaptation mechanism, which is used to maintain the contact state between the flexible electrode unit and the skin during pulse physiotherapy. Therefore, the entire process from signal generation and transmission to skin coupling is in a controlled and stable physical connection link, which not only ensures the consistency of signal output in a single treatment, but also improves the repeatability and clinical reliability of the therapeutic effect between multiple uses, providing system-level technical support for long-term standardized physiotherapy in home or rehabilitation scenarios. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of a medium-frequency pulse physiotherapy device with flexible electrodes according to the present invention;

[0027] Figure 2 for Figure 1 A magnified view of part A shown;

[0028] Figure 3 for Figure 2 A partial cross-sectional view;

[0029] Figure 4 for Figure 2 A partial cross-sectional view from another perspective.

[0030] In the diagram: 1. Main unit; 2. Flexible electrode unit; 3. Wearing mechanism; 31. First base; 32. Second base; 33. Wearing cavity; 4. Limb adaptation mechanism; 41. First adaptation unit; 411. Guide seat; 412. Conductive component; 413. Elastic component; 42. Second adaptation unit; 5. Locking structure; 51. First through hole; 511. First ratchet groove; 512. First opening; 52. Second through hole; 521. Second ratchet groove; 522. Second opening; 53. Limiting rod; 531. Pawl; 532. Operating handle. Detailed Implementation

[0031] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0032] It should be noted that when an element is described as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is described as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0034] See Figures 1-4 A preferred embodiment of the present invention provides a mid-frequency pulse physiotherapy device with flexible electrodes, comprising: a main unit 1, a flexible electrode unit 2, a wearable mechanism 3, and a limb adaptation mechanism 4; the main unit 1 is used to generate mid-frequency pulse electrical signals;

[0035] The flexible electrode unit 2 is electrically connected to the host 1 and is used to attach to human skin to introduce intermediate frequency pulse electrical signals into the human body. The flexible electrode unit 2 can be an adhesive electrode structure made of flexible conductive materials such as conductive fabric, conductive silicone, or graphene composite film. The flexible electrode unit 2 has good extensibility and can stretch or bend synchronously with skin deformation during limb movement, thereby maintaining stable electrical signal acquisition or electrical stimulation output performance.

[0036] The wearable mechanism 3 is used to fix the flexible electrode unit 2 to the human limb; the wearable mechanism 3 can be in the form of a wrap-around strap, an elastic wristband or a headband frame, etc., and its material can be medical-grade silicone, nylon elastic fabric or memory foam composite material.

[0037] The flexible electrode unit 2 is connected to the wearable mechanism 3 via the limb adaptation mechanism 4. The limb adaptation mechanism 4 is used to maintain the flexible electrode unit 2 in contact with the skin during pulse therapy. The limb adaptation mechanism 4 can be a multi-degree-of-freedom ball-and-socket connector, an adjustable length slide rail assembly, or a biomimetic curved base, etc., to adjust deformation. This limb adaptation mechanism 4 can automatically or manually adjust the electrode position and contact force according to the user's limb size, contour curvature, and dynamic posture changes, effectively compensating for displacement caused by individual differences or movement.

[0038] In use, first select a flexible electrode unit 2 of appropriate size and shape according to the treatment area, and install it onto the wearable device 3 through the limb adaptation mechanism 4. Wear the wearable device 3 on the target limb area of ​​the patient and adjust its tightness to ensure a secure but not too tight fit, avoiding affecting blood circulation. During this process, the flexible electrode unit 2 should naturally cover the skin area to be treated. Then, connect the flexible electrode unit 2 to the main unit 1 through a wire and turn on the main unit 1. The main unit 1 generates a medium-frequency pulse electrical signal of specific frequency, waveform, and intensity according to the preset program or the treatment mode selected by the user, and conducts it to the human skin through the flexible electrode unit 2. During the treatment, when the patient's limb shape changes due to breathing, muscle contraction, or postural adjustments, the limb adaptation mechanism 4 can adjust the position and angle of the flexible electrode unit 2 to ensure that it always fits tightly against the skin surface, avoiding uneven stimulation, local burning sensation, or reduced efficacy caused by electrode lifting or slippage. After the treatment time is over, the main unit 1 automatically stops outputting pulse signals, the operator turns off the power, disconnects the electrode connection, and removes the wearable device 3 and the flexible electrode unit 2. The flexible electrode unit 2 can be cleaned and reused, or replaced according to single-use specifications. The entire process takes into account comfort, stability, and therapeutic effectiveness, making it particularly suitable for mid-frequency electrotherapy scenarios that require long-term, dynamic application or joint movement, such as chronic pain relief, muscle rehabilitation training, and nerve function modulation.

[0039] The flexible electrode unit 2 is electrically connected to the host 1 and is used to attach to the human skin to introduce mid-frequency pulse electrical signals into the human body. This allows for the formation of a large-area, low-impedance electrical contact interface with the skin, avoiding stinging or burning sensations caused by localized current concentration. This provides a reliable electrical coupling basis for the safe and uniform introduction of mid-frequency pulse signals. The wearable mechanism 3 is used to fix the flexible electrode unit 2 to the human limb, thus achieving overall positioning of the physiotherapy device on the limb without relying on external adhesion methods. This effectively prevents significant slippage or accidental detachment of the device during use, providing a reliable mechanical support basis for continuous contact between the electrode and the skin and stable physiotherapy. The flexible electrode unit 2 is connected to the wearable mechanism 3 through the limb adaptation mechanism 4. The limb adaptation mechanism 4 maintains the contact state between the flexible electrode unit 2 and the skin during pulse physiotherapy. Therefore, even under dynamic conditions such as limb activity, muscle contraction, or sweating, the effective contact between the electrode and the skin can be continuously maintained through structural self-adaptation, solving the technical problem of insufficient connection reliability in existing mid-frequency pulse physiotherapy devices due to the susceptibility of electrode-skin contact to interference. The wearable mechanism 3 is used to fix the flexible electrode unit 2 to the human limb, and the flexible electrode unit 2 is connected to the wearable mechanism 3 through the limb adaptation mechanism 4. The limb adaptation mechanism 4 is used to maintain the contact state between the flexible electrode unit 2 and the skin during pulse physiotherapy. Therefore, the wearable mechanism 3 ensures the macroscopic position stability of the physiotherapy device on the limb, while the limb adaptation mechanism 4 allows the electrode unit to be locally adjusted with the micro-movement of the skin. The two work together to make the physiotherapy device have both overall stability and local fit in dynamic use scenarios, providing structural compatibility guarantee for continuous treatment in complex movement states. The host 1 is used to generate intermediate frequency pulse electrical signals; the flexible electrode unit 2 is electrically connected to the host 1 and is used to attach to human skin to introduce intermediate frequency pulse electrical signals into the human body; the wearable mechanism 3 is used to fix the flexible electrode unit 2 to the human limb; and the flexible electrode unit 2 is connected to the wearable mechanism 3 through the limb adaptation mechanism 4, which is used to maintain the contact state between the flexible electrode unit 2 and the skin during pulse physiotherapy. Therefore, the entire process from signal generation and transmission to skin coupling is in a controlled and stable physical connection link, which not only ensures the consistency of signal output in a single treatment, but also improves the repeatability and clinical reliability of the therapeutic effect between multiple uses, providing system-level technical support for long-term standardized physiotherapy in home or rehabilitation scenarios.

[0040] Preferably, in this embodiment, the wearable mechanism 3 includes a first base 31 and a second base 32, with the hinged ends of the first base 31 and the second base 32 hinged together, allowing the free end of the second base 32 to swing relative to the first base 31 along a vertical plane. The wearable mechanism 3 is provided with a locking structure 5, which is used to lock the free end of the second base 32 to the free end of the first base 31. When the first base 31 and the second base 32 are relatively fixed by the locking structure 5, they together form a wearing cavity 33 for accommodating a human limb. Specifically, the overall shape of the first base 31 and the second base 32 can be adapted to the anatomical structure of the target limb, and can adopt an arc shape, a semi-circle, or a multi-segment continuous curved surface structure to better cover limb areas with curvature characteristics such as the arm, elbow joint, or knee joint. The hinge structure can take the form of a pin, hinge, or flexible pivot, while the locking structure 5 can be a snap-on buckle, magnetic locking component, or adjustable sliding slot, etc., with a design that balances ease of operation and locking reliability. This hinged and locking mechanism, working in tandem, gives the wearable mechanism 3 a function similar to a wristband or handcuff: it can be opened and slipped onto the limb from the side or end, then closed and locked, eliminating the need to slip it onto the limb's end, thus improving ease of wearing and removing. Simultaneously, since the wearing cavity 33 consists of two relatively movable bases, its inner diameter after closure can be adaptively adjusted within a certain range to accommodate limbs of different sizes. This avoids the flexible electrode unit 2 slipping or detaching during therapy due to excessive looseness, and also prevents discomfort or impaired blood circulation caused by excessive tightness compressing the skin.

[0041] Preferably, in this embodiment, the locking structure 5 includes a first through hole 51 provided in the first base 31, a second through hole 52 provided in the second base 32, and a limiting rod 53; the inner sidewall of the first through hole 51 is provided with a plurality of first ratchet grooves 511, the plurality of first ratchet grooves 511 are spaced apart along the axial direction of the first through hole 51 and linearly distributed, the first ratchet grooves 511 extend circumferentially around the first through hole 51 and form an open-loop structure, so that the first ratchet grooves 511 have a first opening 512; the outer wall of the limiting rod 53 is provided with a pawl 531, the pawl 531 is adapted to the first ratchet groove 511; the first ratchet groove 511 is used to prevent the pawl 531 from moving in a direction away from the first through hole 51, and the limiting rod 53 can rotate circumferentially along the first through hole 51 so that the pawl 531 is aligned with the first opening 512, thereby allowing the limiting rod 53 to disengage axially from the first through hole 51. The shape, size, and position of the pawl 531 are adapted to the first ratchet groove 511. When the limiting rod 53 is inserted axially into the first through hole 51, the pawl 531 can slide into any of the first ratchet grooves 511. Since the groove wall of the first ratchet groove 511 is a one-way inclined plane or a vertical baffle structure, it can effectively prevent the pawl 531 from moving away from the first through hole 51, thereby realizing a one-way self-locking function and preventing the wearable mechanism 3 from being accidentally released due to limb movement or external force during use. When unlocking is required, the operator only needs to rotate the limiting rod 53 so that the pawl 531 is aligned with the first opening 512 of the first ratchet groove 511, and the limiting rod 53 can be pulled out from the first through hole 51 axially to complete the quick disassembly. This locking structure 5 locks after the limiting rod 53 is inserted through the cooperation of the ratchet groove and the pawl 531, and allows axial disengagement after being rotated to a specific angle. This design provides reliable anti-pull-out capability while in use, ensuring that the wearable mechanism 3 is securely closed during physiotherapy. At the same time, the unlocking operation does not require tools and can be completed by simply rotating the limiting rod 53 with one hand, which improves the ease of operation for users and is especially suitable for rehabilitation patients or the elderly and other people with limited operational capabilities.

[0042] Preferably, in this embodiment, the inner wall of the second through hole 52 is provided with a plurality of second ratchet grooves 521. The plurality of second ratchet grooves 521 are spaced apart along the axial direction of the second through hole 52 and linearly distributed. The second ratchet grooves 521 extend circumferentially around the second through hole 52 and form an open-loop structure, so that the second ratchet grooves 521 have a second opening 522. The pawl 531 is adapted to the second ratchet grooves 521. The second ratchet grooves 521 are used to prevent the pawl 531 from moving in a direction away from the second through hole 52. The limiting rod 53 can rotate circumferentially along the second through hole 52 so that the pawl 531 is aligned with the second opening 522, thereby allowing the limiting rod 53 to disengage axially from the second through hole 52. When the limiting rod 53 passes through the second through hole 52 and the first through hole 51 in sequence, the pawl 531 can be embedded in the corresponding second ratchet groove 521 and first ratchet groove 511 respectively. After the limiting rod 53 is inserted into place, its pawl 531 is constrained on both sides of the axial direction, forming a double locking effect. When unlocking is required, the limiting rod 53 is rotated so that the pawl 531 is aligned with the first opening 512 of the first ratchet groove 511 and the second opening 522 of the second ratchet groove 521, and the limiting rod 53 can be pulled out from the two through holes along the axial direction to complete the disassembly operation. By setting mutually cooperating ratchet groove structures on the first base 31 and the second base 32 respectively, the limiting rod 53 can achieve unidirectional locking on both sides, improving the overall pull-out resistance and mechanical rigidity of the locking structure 5. This bidirectional constraint mechanism effectively avoids the problem of locking failure due to unilateral force or local deformation during limb activity, thereby further enhancing the wearing stability and connection reliability of the wearable mechanism 3.

[0043] Preferably, in this embodiment, the outer wall of the limiting rod 53 is provided with multiple pawls 531, which are spaced apart and linearly distributed along the axial direction of the limiting rod 53. This multi-pawl structure allows the limiting rod 53 to engage with the first ratchet groove 511 and the second ratchet groove 521 located at different axial positions during insertion into the first through hole 51 and the second through hole 52, thereby achieving multiple locking positions. The user can select the ratchet groove at the corresponding axial position to insert the pawl 531 according to the actual limb circumference, so as to adjust the inner diameter of the wearing cavity 33 formed after the first base 31 and the second base 32 are closed. Through the above-mentioned multi-position adjustment mechanism, the wearing mechanism 3 can adapt to the limb circumference of different users within a wide range, ensuring wearing stability while avoiding discomfort caused by excessive tightness or slippage caused by excessive looseness, thus taking into account both wearing comfort and fixed reliability.

[0044] Preferably, in this embodiment, the limb adaptation mechanism 4 includes a plurality of first adaptation units 41 spaced apart along the extension direction of the first base 31; each first adaptation unit 41 includes: a guide seat 411, a conductive element 412, and an elastic element 413; the guide seat 411 is disposed on a side wall of the first base 31 facing the wearing cavity 33, and has a guide hole extending in a direction toward the center of the wearing cavity 33; at least a portion of the structure of the conductive element 412 extends into the guide hole and forms a telescopic connection with the guide seat 411, one end of the conductive element 412 is electrically connected to the host 1, and the other end is electrically connected to the flexible electrode unit 2; the elastic element 413 is sleeved on the guide seat 411, and both ends of the elastic element 413 abut against the first base 31 and the flexible electrode unit 2 respectively, and is used to provide elastic force to the flexible electrode unit 2 toward the center of the wearing cavity 33. The elastic element 413 can be a compression spring, an elastic rubber sleeve, or an elastic element with similar axial rebound properties. The elastic element 413 possesses good fatigue durability and biocompatibility to adapt to long-term wear and repeated deformation. Through this structure, the flexible electrode unit 2 remains in close contact with the limb skin surface under the action of the elastic element 413. When there are local contour undulations, muscle deformations, or changes in wearing posture on the limb, the conductive element 412 can extend and retract axially within the guide hole, allowing the flexible electrode unit 2 to adaptively adjust its position according to the skin surface, thereby maintaining good contact. Simultaneously, because the conductive element 412 maintains a stable electrical connection with the main unit 1 and the electrode unit, signal attenuation or conduction interruption caused by loose contact or gaps is effectively avoided, ensuring the reliability and consistency of the connection during the physiotherapy process.

[0045] Preferably, in this embodiment, the limb adaptation mechanism 4 includes a plurality of second adaptation units 42 spaced apart along the extension direction of the second base 32; each second adaptation unit 42 includes: a guide seat 411, a conductive element 412, and an elastic element 413; the guide seat 411 is disposed on a side wall of the second base 32 facing the wearing cavity 33, and has a guide hole extending in a direction toward the center of the wearing cavity 33; at least a portion of the structure of the conductive element 412 extends into the guide hole and forms a telescopic connection with the guide seat 411, one end of the conductive element 412 is electrically connected to the host 1, and the other end is electrically connected to the flexible electrode unit 2; the elastic element 413 is sleeved on the guide seat 411, and both ends of the elastic element 413 abut against the second base 32 and the flexible electrode unit 2 respectively, and is used to provide elastic force to the flexible electrode unit 2 toward the center of the wearing cavity 33. By providing a second adaptive unit 42 on the second base 32 that is symmetrical or complementary to the first base 31, the flexible electrode unit 2 possesses independent elastic following capability not only on the first base 31 side but also on the second base 32 side. Thus, the entire electrode array forms multi-point, distributed adaptive support in the circumferential direction surrounding the limb, dynamically adjusting local pressure and position according to the limb contour to achieve a close fit throughout the entire circumference. This structure is particularly suitable for areas with significant curvature changes and irregular surfaces, such as the elbow and knee joints, maintaining stable contact between the electrodes and the skin during user activity, thus improving the electrode contact reliability and consistency of therapeutic effects of this mid-frequency pulse physiotherapy device under complex limb shapes.

[0046] Preferably, in this embodiment, the elastic element 413 is a compression spring. Using a compression spring as the elastic element has advantages such as simple structure, low manufacturing cost, stable axial rebound performance, and long fatigue life. During long-term use, the compression spring can continuously provide a constant preload, ensuring that the flexible electrode unit 2 is always reliably pressed against the skin surface, effectively preventing loosening of contact due to elastic decay or material creep.

[0047] Preferably, in this embodiment, the guide seat 411 is integrally formed with the first base 31 and / or the second base 32. Specifically, the guide seat 411 can be integrally formed with the first base 31 and / or the second base 32 through injection molding, compression molding, or machining. This integral design eliminates the need for fasteners or secondary assembly processes required by traditional split structures, which not only simplifies the manufacturing process and reduces production costs, but also effectively avoids the risk of structural failure caused by loose connections, component detachment, or interface wear. At the same time, the overall structure improves local rigidity and dimensional stability, helping to ensure the sliding accuracy and long-term reliability of the conductive component 412 in the guide hole, thereby enhancing the structural integrity and durability of the entire machine.

[0048] Preferably, in this embodiment, one end of the limiting rod 53 is provided with an operating handle 532. The operating handle 532 increases the contact area for the user's fingers, making it easier to grip and apply axial thrust or circumferential torque. This design ensures that the user can stably and reliably complete the locking or unlocking action, especially under adverse operating conditions such as wet hands, sweating, or wearing medical gloves, enhancing the convenience of interaction and the tolerance for operational errors, thereby optimizing the overall user experience.

[0049] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0050] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0051] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this application, and these should all be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A medium-frequency pulse physiotherapy device with flexible electrodes, characterized in that, include: Host (1), the host (1) is used to generate intermediate frequency pulse electrical signals; Flexible electrode unit (2), which is electrically connected to the host (1) and is used to attach to human skin to introduce intermediate frequency pulse electrical signals into the human body; Wearing mechanism (3), the wearing mechanism (3) is used to fix the flexible electrode unit (2) to the human limb; Limb adaptation mechanism (4), the flexible electrode unit (2) is connected to the wearable mechanism (3) through the limb adaptation mechanism (4), the limb adaptation mechanism (4) is used to maintain the flexible electrode unit (2) in contact with the skin during pulse therapy.

2. The medium-frequency pulse physiotherapy device with flexible electrodes according to claim (1), characterized in that, The wearable mechanism (3) includes a first base (31) and a second base (32), the hinged ends of the first base (31) and the second base (32) are hinged together so that the free end of the second base (32) can swing relative to the first base (31) along a vertical plane; the wearable mechanism (3) is provided with a locking structure (5), the locking structure (5) is used to lock the free end of the second base (32) to the free end of the first base (31); when the first base (31) and the second base (32) are fixed relative to each other through the locking structure (5), the two together enclose a wearing cavity (33) for accommodating human limbs.

3. A medium-frequency pulse physiotherapy device with flexible electrodes according to claim (2), characterized in that, The locking structure (5) includes a first through hole (51) in the first base (31), a second through hole (52) in the second base (32), and a limiting rod (53); the inner wall of the first through hole (51) is provided with a plurality of first ratchet grooves (511), the plurality of first ratchet grooves (511) are spaced apart along the axial direction of the first through hole (51) and are linearly distributed, the first ratchet grooves (511) extend circumferentially around the first through hole (51) and form an open-loop structure, so that the first ratchet grooves (511) have The first opening (512); the outer wall of the limiting rod (53) is provided with a pawl (531), the pawl (531) is adapted to the first ratchet groove (511); the first ratchet groove (511) is used to prevent the pawl (531) from moving away from the first through hole (51), and the limiting rod (53) can rotate circumferentially along the first through hole (51) so that the pawl (531) is aligned with the first opening (512), thereby allowing the limiting rod (53) to axially disengage from the first through hole (51).

4. A medium-frequency pulse physiotherapy device with flexible electrodes according to claim (3), characterized in that, The inner wall of the second through hole (52) is provided with a plurality of second ratchet grooves (521). The plurality of second ratchet grooves (521) are spaced apart along the axial direction of the second through hole (52) and are linearly distributed. The second ratchet grooves (521) extend around the circumference of the second through hole (52) and form an open-loop structure so that the second ratchet grooves (521) have a second opening (522). The pawl (531) is adapted to the second ratchet groove (521). The second ratchet groove (521) is used to prevent the pawl (531) from moving away from the second through hole (52). The limiting rod (53) can rotate along the circumference of the second through hole (52) so that the pawl (531) is aligned with the second opening (522), thereby allowing the limiting rod (53) to disengage from the second through hole (52) axially.

5. A medium-frequency pulse physiotherapy device with flexible electrodes according to claim (3), characterized in that, The outer wall of the limiting rod (53) is provided with a plurality of pawls (531), which are spaced apart and linearly distributed along the axial direction of the limiting rod (53).

6. A medium-frequency pulse physiotherapy device with flexible electrodes according to claim (2), characterized in that, The limb adaptation mechanism (4) includes a plurality of first adaptation units (41) spaced apart along the extension direction of the first base (31); each first adaptation unit (41) includes: a guide seat (411), a conductive element (412), and an elastic element (413); the guide seat (411) is disposed on a side wall of the first base (31) facing the wearing cavity (33), and is provided with a guide hole extending in the direction toward the center of the wearing cavity (33); at least a portion of the structure of the conductive element (412) extends into the guide hole and forms a retractable connection with the guide seat (411), one end of the conductive element (412) is electrically connected to the host (1), and the other end is electrically connected to the flexible electrode unit (2); the elastic element (413) is sleeved on the guide seat (411), and both ends of the elastic element (413) abut against the first base (31) and the flexible electrode unit (2) respectively, and is used to provide elastic force to the flexible electrode unit (2) toward the center of the wearing cavity (33).

7. A medium-frequency pulse physiotherapy device with flexible electrodes according to claim (2), characterized in that, The limb adaptation mechanism (4) includes a plurality of second adaptation units (42) spaced apart along the extension direction of the second base (32); each second adaptation unit (42) includes: a guide seat (411), a conductive element (412), and an elastic element (413); the guide seat (411) is disposed on a side wall of the second base (32) facing the wearing cavity (33), and is provided with a guide hole extending in the direction toward the center of the wearing cavity (33); at least a portion of the structure of the conductive element (412) extends into the guide hole and forms a retractable connection with the guide seat (411), one end of the conductive element (412) is electrically connected to the host (1), and the other end is electrically connected to the flexible electrode unit (2); the elastic element (413) is sleeved on the guide seat (411), and both ends of the elastic element (413) abut against the second base (32) and the flexible electrode unit (2) respectively, and is used to provide elastic force to the flexible electrode unit (2) toward the center of the wearing cavity (33).

8. A medium-frequency pulse physiotherapy device with flexible electrodes according to claim (6), characterized in that, The elastic element (413) is a compression spring.

9. A medium-frequency pulse physiotherapy device with flexible electrodes according to claim (6) or (7), characterized in that, The guide seat (411) is integrally formed with the first base (31) and / or the second base (32).

10. A medium-frequency pulse physiotherapy device with flexible electrodes according to claim (3), characterized in that, One end of the limiting rod (53) is provided with an operating handle (532).

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