Handle cable and ultrasonic therapeutic apparatus

Abstract

The utility model discloses a handle cable and an ultrasonic therapeutic apparatus, and relates to the technical field of medical instruments, the handle cable is applied to the therapeutic apparatus and used for connecting a host and a handle of the therapeutic apparatus, the handle cable comprises a wrapping structure, a first cable and a second cable, and the wrapping structure wraps the first cable and the second cable; wherein the first cable is arranged to transmit a power signal and a control signal, the second cable is arranged to transmit a power signal, and a shielding layer is arranged on the outer wall of the first cable and / or the second cable, so that the first cable and the second cable are electromagnetically isolated from each other. The technical scheme of the utility model aims to solve the problem that an existing handle cable is susceptible to electromagnetic interference, so that interference signals are transmitted into an equipment circuit, and misoperation is caused.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a handle cable and an ultrasonic therapy device. Background Technology

[0002] The power output of an ultrasonic therapy device typically employs an ultrasonic power amplification circuit to transmit energy to the ultrasonic transducer treatment head. The principle is that after parameters are set via the human-machine interface, the host controls the waveform generator module to output a waveform. This waveform passes through the ultrasonic power amplification drive circuit, and then through an LC resonant impedance matching circuit, before being output as a sine wave to the focused ultrasonic transducer treatment head on the handpiece, thus producing ultrasonic waves.

[0003] For ultrasound therapy equipment, to meet clinical requirements and facilitate operation, a handpiece cable is typically extended from the main unit. The handpiece cable contains signal lines, power lines, and power lines for outputting ultrasound energy.

[0004] The ultrasonic amplification circuit for ultrasonic power output is mainly driven by a MOSFET switch, which drives the subsequent load. The MOSFET drive signal is a square wave signal. Due to the high energy required by the ultrasonic therapy device, the drive frequency needs to reach 2-7MHz, causing the MOSFET to operate in a high-speed switching state. The switch operates in a non-linear region, with rapid changes during conduction and cutoff, generating severe EMC interference. The handheld cable acts as a receiving antenna, and interference signals from the power drive amplification circuit are led out to the transducer treatment head through the handheld cable, causing excessive radiation. Handheld communication and position detection signals are also interfered with, resulting in operational errors (such as button malfunction, abnormal position detection, and abnormal communication between the host and the handheld). Utility Model Content

[0005] The main purpose of this invention is to provide a handle cable and an ultrasonic therapy device, which aims to solve the problem that existing handle cables are susceptible to electromagnetic interference, which transmits interference signals into the device circuit and causes operational errors.

[0006] To achieve the above objectives, this utility model proposes a handle cable, which is used in a therapeutic instrument to connect the main unit and the handle of the therapeutic instrument. The handle cable includes a wrapping structure, a first cable, and a second cable, with the wrapping structure wrapping around the first cable and the second cable.

[0007] The first cable is configured to transmit power signals and control signals, and the second cable is configured to transmit power signals. The outer wall of the first cable and / or the second cable is provided with a shielding layer to electromagnetically isolate the first cable and the second cable from each other.

[0008] In one embodiment, the first cable includes a first shielding mesh, a signal core, and a power core, wherein the power core and the signal core are coaxially twisted together.

[0009] The first shielding mesh covers the outside of the power core and the signal core to form the shielding layer.

[0010] In one embodiment, the first cable includes a metal foil layer, a signal core, and a power core, wherein the power core and the signal core are coaxially twisted together.

[0011] The metal foil layer covers the outside of the power core and the signal core to form the shielding layer;

[0012] The metal foil layer is one of aluminum foil paper layer, aluminum-plastic composite layer, copper foil paper layer, and copper-plastic composite layer.

[0013] In one embodiment, the first cable includes a first shielding mesh, a metal foil layer, a signal core, and a power core, wherein the power core and the signal core are coaxially twisted together.

[0014] The metal foil layer covers the outside of the power core and the signal core, and the first shielding mesh is disposed on the side of the metal foil layer facing away from the power core and the signal core. The metal foil layer and the first shielding mesh form the shielding layer.

[0015] In one embodiment, the second cable includes:

[0016] Power conductor;

[0017] An insulating layer, the insulating layer covering the periphery of the power conductor; and

[0018] The second shielding mesh covers the side of the insulation layer facing away from the power conductor.

[0019] In one embodiment, the handle cable further includes a plug, the plug having a first grounding terminal, and the second shielding mesh being a metal braided shielding mesh, the second shielding mesh being electrically connected to the first grounding terminal;

[0020] And / or, the handle cable further includes a plug, the plug having a second grounding terminal, the first cable having a first shielding mesh, the first shielding mesh being a metal braided shielding mesh, and the first shielding mesh being electrically connected to the second grounding terminal.

[0021] In one embodiment, both the first cable and / or the second cable include a first outer sheath, which covers the outside of the shielding layer.

[0022] In one embodiment, the packaging structure includes a second outer sheath and a metal shielding plate, the second outer sheath forming a wire cavity, and the first cable and the second cable being disposed in the wire cavity;

[0023] The metal shielding plate is located in the wire cavity and in at least a portion of the area between the first cable and the second cable.

[0024] In one embodiment, the packaging structure further includes an outer shielding layer that covers the first cable, the second cable, and the metal shielding plate;

[0025] The outer shielding layer is one of conductive rubber, carbon black conductive polymer, metal powder conductive polymer, and carbon nanotube. The outer shielding layer fills the wire cavity and covers the first cable and the second cable respectively.

[0026] Alternatively, the outer shielding layer may be a metal woven shielding mesh.

[0027] This utility model also proposes an ultrasonic therapy device, which includes a main unit, a handle, and a handle cable as described above. The main unit and the handle are electrically and signal connected through the handle cable.

[0028] Compared with the prior art, the handle cable and ultrasonic therapy device provided by this utility model have the following beneficial effects:

[0029] The handle cable of this utility model is used in a therapeutic device to connect the main unit and handle of the therapeutic device. The handle cable includes a sheathing structure, a first cable, and a second cable, with the sheathing structure covering the first and second cables. The first cable is configured to transmit power and control signals, while the second cable is configured to transmit power signals. The outer wall of the first and / or second cables is provided with a shielding layer to electromagnetically isolate them from each other. By separating the first and second cables into two independent sets of wires and providing a shielding layer on the outside of at least one of the first and second cables, the cable transmitting power signals and the cable transmitting control signals are separated into two independent sets of wires. This effectively reduces electromagnetic interference from the power signals received by the control signal cable and prevents internally generated electromagnetic energy from leaking into the external environment and becoming an interference source. This reduces external interference and avoids operational errors. Furthermore, the independent routing of the first and second cables reduces wear between them during bending and use, thus improving the lifespan of the handle cable. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the overall structure of the handle cable in one embodiment of the present invention;

[0032] Figure 2 This is a cross-sectional schematic diagram of the handle cable in one embodiment of the present invention;

[0033] Figure 3 This is a cross-sectional schematic diagram of the plug in one embodiment of the present invention.

[0034] Explanation of icon numbers:

[0035] 100. Handle cable; 1. Encasing structure; 11. Second outer sheath; 111. Cable cavity; 12. Outer shielding layer; 2. First cable; 21. First shielding mesh; 22. Signal core; 23. Power core; 24. Metal foil layer; 3. Second cable; 31. Power core; 32. Insulation layer; 33. Second shielding mesh; 4. Plug; 41. Frame; 42. Interface; 5. First outer sheath; 6. Corrugated tube.

[0036] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0039] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0040] Please refer to Figures 1 to 3 As shown, this utility model proposes a handle cable 100, which is used in a therapeutic instrument to connect the main unit and handle of the therapeutic instrument. The handle cable 100 includes a wrapping structure 1, a first cable 2 and a second cable 3. The wrapping structure 1 wraps around the first cable 2 and the second cable 3. The first cable 2 is configured to transmit power signals and control signals, and the second cable 3 is configured to transmit power signals. The outer wall of the first cable 2 and / or the second cable 3 is provided with a shielding layer to electromagnetically isolate the first cable 2 and the second cable 3 from each other.

[0041] In this embodiment, the handle cable 100 is applied to a therapeutic device, which may be an ultrasound therapeutic device, a laser therapeutic device, or a radiofrequency therapeutic device, etc., and is not limited thereto. The therapeutic device typically includes a main unit and a handle. The main unit is a main structure with a power supply and a control motherboard, and the handle is an execution structure that directly or indirectly contacts the patient to achieve treatment. The handle cable 100 is used to connect the main unit and the handle to achieve electrical and signal connections between the main unit and the handle.

[0042] In this embodiment, the wrapping structure 1 refers to the physical structure used to accommodate, protect, and fix the first cable 2 and the second cable 3. Typically, the wrapping structure 1 is wrapped around the outside of the first cable 2 and the second cable 3 to protect the first cable 2 and the second cable 3 located inside from corrosion and mechanical damage from the external environment, thereby providing physical protection and integrating the first cable 2 and the second cable 3 into a whole. Specifically, the wrapping structure 1 can be implemented using insulating materials and / or composite layer materials. The wrapping structure 1 includes, but is not limited to, armor layers, insulation layers 32, etc.

[0043] Meanwhile, the wrapping structure 1 may also include a metal braided mesh, which wraps around the first cable 2 and the second cable 3. The metal braided mesh is made of woven metal wires and is usually located between the insulation layer 32 and the outer sheath. Its function is to form a preliminary barrier against external electromagnetic interference and prevent electromagnetic interference. Among them, the first cable 2 is a cable for transmitting power signals and control signals, responsible for powering the handle and transmitting control commands. Specifically, it can be implemented using a coaxial twisted structure of power core 23 and signal core 22. Coaxial twisting can reduce crosstalk between internal signals, and the signal core 22 in the first cable 2 can transmit digital signals or analog signals, which is not limited here. The second cable 3 is a cable for transmitting power signals, which can be implemented using a single-core or multi-core conductor structure. Its function is to carry high-power signals to meet the energy requirements of therapeutic instruments, such as ultrasonic therapeutic instruments.

[0044] In this embodiment, the shielding layer is a structural layer used to isolate electromagnetic interference. Specifically, the shielding layer can be implemented using a metal foil layer 24 or a metal braided shielding mesh. Its function is to prevent the transmission of electromagnetic interference between the first cable 2 and the second cable 3. Based on the mutual isolation between the first cable 2 and the second cable 3, by setting a shielding layer on the outside of at least one of the first cable 2 and the second cable 3, it is possible to prevent the power signal in the second cable 3 from interfering with the control signal in the first cable 2.

[0045] Mutual electromagnetic isolation refers to blocking electromagnetic field coupling between cables through physical shielding. This can be achieved by setting up independent shielding layers or separating cable spaces. Its function is to eliminate the impact of electromagnetic interference generated by high-frequency power signals on the transmission of other signals and ensure the stability of signal transmission.

[0046] It is understood that by setting a shielding layer on the outer wall of the first cable 2 and / or the second cable 3, and integrating the two using the wrapping structure 1, the first cable 2 and the second cable 3 are electromagnetically isolated from each other, and the high-frequency interference of the power signal and control signal is isolated from the high-energy interference of the power signal, so as to prevent the power signal from interfering with the power and control signals. This solves the electromagnetic compatibility problem caused by the high-frequency switching signal of the ultrasonic therapy instrument, avoids the handle cable 100 from becoming a source of radiation interference or a signal interference receiving antenna, effectively reduces electromagnetic interference, and ensures the integrity and reliability of the signal.

[0047] Through the above solution, this application achieves effective isolation of different functional signals inside the handle cable 100. By transmitting power signals separately from control and power signals and setting shielding layers outside their respective cables, the electromagnetic interference of power signals on control and power signals is greatly reduced. This design effectively improves the quality and reliability of signal transmission, reduces equipment malfunctions caused by signal interference, and ensures the normal operation of the ultrasonic therapy device. At the same time, the setting of shielding layers also reduces the electromagnetic radiation of the cable to the outside and improves the electromagnetic compatibility of the device.

[0048] The handle cable 100 of this utility model is applied to a therapeutic instrument and is used to connect the main unit and handle of the therapeutic instrument. The handle cable 100 includes a wrapping structure 1, a first cable 2, and a second cable 3. The wrapping structure 1 wraps around the first cable 2 and the second cable 3. The first cable 2 is configured to transmit power signals and control signals, and the second cable 3 is configured to transmit power signals. The outer wall of the first cable 2 and / or the second cable 3 is provided with a shielding layer to electromagnetically isolate the first cable 2 and the second cable 3 from each other. By separating the first cable 2 and the second cable 3 into two independent sets of wires and providing a shielding layer on the outside of at least one of the first cable 2 and the second cable 3, the cable transmitting the power signal and the cable transmitting the control signal are separated into two independent sets of wires. This effectively reduces the electromagnetic interference of the cable transmitting the control signal receiving the power signal, and effectively prevents the electromagnetic energy generated inside from leaking into the external environment and becoming an interference source. This reduces external interference and avoids operational errors. At the same time, the independent routing of the first cable 2 and the second cable 3 can reduce wear between the first cable 2 and the second cable 3 when the handle cable 100 is bent during use, and can improve the life of the handle cable 100.

[0049] like Figure 2 As shown, in one embodiment, the first cable 2 includes a first shielding mesh 21, a signal core 22, and a power core 23, with the power core 23 and the signal core 22 twisted coaxially; the first shielding mesh 21 covers the outside of the power core 23 and the signal core 22 to form a shielding layer.

[0050] In this embodiment, the signal core 22 in the first cable 2 can be a conductor made of multiple strands of copper wire twisted together, used for transmitting control signals. Similarly, the power core 23 can also be a conductor made of multiple strands of copper wire twisted together, used for transmitting power signals. The power core 23 and the signal core 22 are arranged coaxially, ensuring a tight spatial fit and reducing electromagnetic leakage that may occur due to internal gaps. The first cable 2 also includes a first shielding mesh 21, which uses a metal braided structure to cover the outer periphery of the core assembly (i.e., the power core 23 and the signal core 22) in a mesh shape, forming a continuous shielding surface and a shielding layer. Coaxial twisting creates a uniform and symmetrical electromagnetic field distribution between the cores, reducing differential-mode interference generated by the cores themselves.

[0051] Specifically, metal braided mesh is a shielding layer structure, usually woven from metal materials such as copper wire, tinned copper wire, and aluminum alloy wire. Its main function is to shield electromagnetic interference and prevent external electromagnetic waves from interfering with the internal signals of the cable. It can also prevent internal signals from radiating out. The shielding effect of metal braided mesh is related to the braiding density and the conductivity of the metal.

[0052] When the composite conductor is wrapped by the first shielding mesh 21, its mesh structure forms a Faraday cage effect, confining the internal electromagnetic field inside the core assembly. When an external high-frequency interference signal (the power signal generated by the second cable 3) reaches the shielding mesh, the electromagnetic wave generates eddy currents on the surface of the metal mesh and is reflected, preventing energy penetration. At the same time, the capacitive coupling effect between the shielding mesh and the core assembly absorbs residual high-frequency components. When the power signal cable generates 7MHz high-frequency interference, the skin depth of the first shielding mesh 21 is smaller than the wavelength of the interference signal, causing the interference current to be distributed along the surface of the shielding mesh, preventing it from penetrating into the internal core. This structure ensures that the power signal and control signal maintain electromagnetic compatibility during transmission, preventing high-order harmonic interference of the power signal from causing control command errors.

[0053] It is understood that this application achieves effective electromagnetic isolation between the signal core 22 and power core 23 inside the first cable 2 and the second cable 3 used for transmitting power signals by setting a first shielding mesh 21 outside the first cable 2. This improves the quality and stability of signal transmission in the first cable 2. Simultaneously, the first shielding mesh 21 enhances the shielding effect against external electromagnetic interference, effectively protecting the safety of internal signal transmission. This structural design allows the handle cable 100 to maintain good signal transmission performance even in complex electromagnetic environments, effectively isolating external electromagnetic interference and preventing signal leakage, thus improving the overall reliability and stability of the therapeutic device.

[0054] like Figure 2As shown, in one embodiment, the first cable 2 includes a metal foil layer 24, a signal core 22, and a power core 23, with the power core 23 and the signal core 22 coaxially twisted together; the metal foil layer 24 covers the outside of the power core 23 and the signal core 22 to form a shielding layer; wherein, the metal foil layer 24 is one of an aluminum foil layer, an aluminum-plastic composite layer, a copper foil layer, and a copper-plastic composite layer.

[0055] In this embodiment, the power core 23 and the signal core 22 are coaxially twisted together. Then, a metal foil layer 24 is wrapped around the power core 23 and the signal core 22. For example, a single metal foil layer 24 such as an aluminum foil layer or a copper foil layer can be used, or a composite material foil layer such as an aluminum-plastic composite layer or a copper-plastic composite layer. The aluminum-plastic composite layer or the copper-plastic composite layer is made by combining aluminum foil or copper foil with a plastic film, which combines the shielding performance of the metal foil with the flexibility of the film to improve the flexibility and service life of the metal foil layer 24. The wrapping of the metal foil layer 24 can be achieved by spiral winding or tubing. Its edges are longitudinally overlapped or spirally wound to ensure the integrity of the coverage. The metal foil layer 24 wraps the coaxially twisted power core 23 and the signal core 22 in a continuous covering manner to form a gapless conductive shield, thereby forming a shielding layer for the first cable 2.

[0056] Understandably, the metal foil layer 24, through the high conductivity of aluminum or copper, creates a skin effect in the 2-7MHz high-frequency band, confining interference current to the surface of the foil layer. Using an aluminum-plastic composite layer or a copper-plastic composite layer, a composite structure of metal and plastic layers can be achieved. For example, an aluminum-plastic composite layer can use a 12μm aluminum film combined with a 50μm polyethylene film, ensuring flexibility while improving mechanical strength and tear resistance. After the coating is completed, the metal foil layer 24 forms a complete shielding layer, isolating the internal power core 23 and signal core 22 from external electromagnetic fields.

[0057] Specifically, when a high-frequency interference signal penetrates the wrapping structure 1 from the outside, the metal foil layer 24 forms a continuous conductive path through the fully wrapped structure, and the interference current is conducted along the surface of the foil layer to the grounding terminal. The coaxial stranded structure causes the electromagnetic fields of the power core 23 and the signal core 22 to cancel each other out, reducing capacitive coupling between the lines.

[0058] By using the metal foil layer 24 as a shielding layer, the influence of external electromagnetic fields (such as the power signal cable of the second cable 3) on the internal signal of the first cable 2 can be blocked, while also preventing the internal signal from radiating outward. Compared with traditional metal braided mesh, the metal foil layer 24 has better shielding effect and lower cost. In addition, different types of metal foil layers 24 can be selected according to actual needs, improving design flexibility. As a result, the signal transmission quality of the handle cable 100 is improved, operational errors caused by electromagnetic interference are reduced, and the overall performance and reliability of the ultrasonic therapy device are improved.

[0059] like Figure 2 As shown, in one embodiment, the first cable 2 includes a first shielding mesh 21, a metal foil layer 24, a signal core 22, and a power core 23, with the power core 23 and the signal core 22 twisted coaxially. The metal foil layer 24 covers the outside of the power core 23 and the signal core 22, and the first shielding mesh 21 is disposed on the side of the metal foil layer 24 facing away from the power core 23 and the signal core 22. The metal foil layer 24 and the first shielding mesh 21 form a shielding layer.

[0060] In this embodiment, the metal foil layer 24 is made of aluminum foil or copper foil and covers the surface of the wire cores in a continuous wrapping manner, such as by spiral winding or sleeve wrapping around the signal wire core 22 and the power wire core 23, to eliminate the gaps generated when the signal wire core 22 and the power wire core 23 are twisted together. The first shielding mesh 21 is a metal braided structure that covers the outside of the metal foil layer 24, providing mechanical support and enhancing the high-frequency interference shielding capability, so that the metal foil layer 24 and the first shielding mesh 21 together form a shielding layer. For example, the shielding efficiency of the metal foil layer 24 against high-frequency electric field interference can reach more than 60dB, and the shielding efficiency of the first shielding mesh 21 against magnetic field interference can reach more than 40dB. The two are physically stacked together, so that the overall shielding effectiveness covers a wider frequency band.

[0061] Specifically, when the metal foil layer 24 directly wraps the wire core, its surface adhesion is high, effectively blocking the outward radiation of electric field interference generated inside the wire core and the electromagnetic interference radiated from the outside in. The first shielding mesh 21 covers the outer surface of the metal foil layer 24, converting external magnetic field interference into current and conducting it to the grounding terminal through the conductive path of the metal braid structure. When the cable is subjected to high-frequency switching noise interference, the metal foil layer 24 preferentially absorbs the electric field component, and the remaining magnetic field component is further attenuated by the eddy current effect of the first shielding mesh 21. Thus, the double-layer shielding structure is spatially complementary, reducing the risk of crosstalk between wire cores and between cables, while avoiding the problem of insufficient frequency band coverage caused by the material characteristics of a single shielding layer, ensuring that power signals and control signals remain stable during transmission. The metal foil layer 24 and the subsequent first shielding mesh 21 form a double-layer shielding structure, which together form a shielding layer. The metal foil layer 24 preferentially absorbs high-frequency interference, while the first shielding mesh 21 suppresses low-frequency magnetic field interference, forming a wideband shielding effect, thereby better passively blocking the electromagnetic interference generated in the second cable 3.

[0062] Understandably, this application can effectively improve the electromagnetic shielding performance of the handle cable 100. The double-layer shielding structure can better block external electromagnetic interference and protect the transmission quality of internal signals. At the same time, the combination of the metal foil layer 24 and the first shielding mesh 21 can also prevent internal signal leakage and reduce electromagnetic interference to the outside world. This double-layer shielding structure design can significantly improve the working performance of the handle cable 100 in the ultrasonic therapy device and improve the reliability and safety of the device.

[0063] like Figure 1 and Figure 2 As shown, in one embodiment, the second cable 3 includes a power core 31, an insulation layer 32, and a second shielding mesh 33. The insulation layer 32 covers the periphery of the power core 31, and the second shielding mesh 33 covers the side of the insulation layer 32 facing away from the power core 31.

[0064] In this embodiment, the second cable 3 includes a power core 31, which can be a single conductor or multiple conductors twisted together, such as multi-strand twisted copper conductors to achieve high current carrying capacity, which is not limited here; the insulation layer 32 of the second cable 3 is uniformly covered on the surface of the power core 31 by extrusion molding process, and the material of the insulation layer 32 can be cross-linked polyethylene or polytetrafluoroethylene; at the same time, a second shielding mesh 33 is provided on the side of the insulation layer 32 facing away from the power core 31. The second shielding mesh 33 can be woven from metal materials such as copper wire, tinned copper wire, and aluminum alloy wire, and is covered on the outer surface of the insulation layer 32 in a twill weave pattern so that the second shielding mesh 33 forms a shielding layer for the second cable 3.

[0065] Specifically, the insulation layer 32, as the primary isolation layer, can prevent the power core 31 from directly contacting and short-circuiting with the shielding layer. The second shielding mesh 33 forms a coaxial structure with the power core 31. Through the Faraday cage effect of the metal braid, the electromagnetic field is confined to the inside of the shielding layer. When the power core 31 transmits a 2-7MHz high-frequency signal, the second shielding mesh 33 can effectively absorb eddy currents and form a reverse electromagnetic field. Actual measurements show that it can reduce the intensity of radiated interference by more than 25dB.

[0066] Understandably, the second shielding mesh 33 installed outside the second cable 3 effectively shields the electromagnetic interference generated by the internal power core 31 during operation, preventing interference signals from radiating outwards and affecting signal transmission in the first cable 2, and preventing such interference signals from propagating to the transducer treatment head through the handle cable 100, thus avoiding excessive radiation. Simultaneously, the second shielding mesh 33 also blocks external electromagnetic interference from affecting the power signal, ensuring the transmission quality of the power signal and effectively improving the active power of the second cable 3. Furthermore, the insulation layer 32 prevents direct contact between the power core 31 and the second shielding mesh 33, improving the safety and reliability of the cable.

[0067] like Figure 1 and Figure 3 As shown, in one embodiment, the handle cable 100 further includes a plug 4, the plug 4 having a first grounding terminal, and a second shielding mesh 33 being a metal braided shielding mesh, the second shielding mesh 33 being electrically connected to the first grounding terminal; optionally, the handle cable 100 further includes a plug 4, the plug 4 having a second grounding terminal, the first cable 2 having a first shielding mesh 21, the first shielding mesh 21 being a metal braided shielding mesh, the first shielding mesh 21 being electrically connected to the second grounding terminal.

[0068] In this embodiment, the plug 4 includes a frame 41 and multiple interfaces 42. The multiple interfaces 42 are located inside the frame 41. One of the multiple interfaces 42 forms the first grounding terminal and / or the second grounding terminal mentioned above. The first cable 2 is provided with a first shielding mesh 21, and the second cable 3 is provided with a second shielding mesh 33. Both the first shielding mesh 21 and the second shielding mesh 33 are metal braided shielding meshes, which are formed by interlacing multiple strands of copper wire and tinned copper wire in a warp and weft manner to form a mesh structure and covering the inner wire core. The first grounding terminal and the second grounding terminal are connected to the housing by riveting or welding to form a conductive path. The first shielding mesh 21 and the second grounding terminal are electrically connected by welding or crimping terminals or wiring, etc., to ensure the continuity of conductivity.

[0069] It is understandable that by electrically connecting the first shielding mesh 21 to the second grounding terminal to ground the first shielding mesh 21, and electrically connecting the second shielding mesh 33 to the first grounding terminal to ground the second shielding mesh 33, the first shielding mesh 21 and the second shielding mesh 33 themselves form a Faraday cage structure. High-frequency interference current is conducted along the surface of the metal braided shielding mesh to the first grounding terminal and / or the second grounding terminal of the plug 4, and then introduced into the device grounding system through the plug 4 housing. Grounding ensures that the first shielding mesh 21 and the second shielding mesh 33 are at the same potential as the earth, preventing the accumulation of charge on the conductor surface and the formation of a potential difference, further ensuring the shielding effect of the internal electric field. This allows for effective shielding and grounding of different cables in the handle cable 100. The connection between the second shielding mesh 33 and the first grounding terminal effectively suppresses electromagnetic interference of the power signal, preventing interference signals from propagating to the treatment head through the handle cable 100. Simultaneously, the connection between the first shielding mesh 21 and the second grounding terminal of the first cable 2 further reduces external interference to the power signal and control signal. This dual shielding and grounding design significantly improves the anti-interference capability of the handle cable 100, reduces the impact of electromagnetic interference on the performance of the therapeutic device, and ensures the stability and reliability of the equipment in clinical use.

[0070] like Figure 1 and Figure 2As shown, in one embodiment, the first cable 2 and / or the second cable 3 both include a first outer sheath 5, which covers the outside of the shielding layer.

[0071] In this embodiment, the first outer sheath 5 is made of polyvinyl chloride, thermoplastic polyurethane, or polyethylene. The first outer sheath 5 is completely wrapped around the outer surface of the shielding layer using an extrusion molding process, forming a continuous and sealed tubular structure. The inner wall of the first outer sheath 5 is fixed to the shielding layer by hot-melt bonding, forming a gapless interface. Specifically, the first outer sheath 5 provides all-round protection to the shielding layer through physical wrapping, preventing the metal foil layer 24 from cracking or the braided mesh from deforming when the shielding layer is bent, rubbed, or compressed. When the handle cable 100 is subjected to external tension, the axial tensile strength of the first outer sheath 5 bears the main stress, preventing the conductive layer from breaking due to stretching. In high-temperature and high-humidity environments, the sealed structure of the first outer sheath 5 prevents moisture from penetrating into the interior of the shielding layer, avoiding oxidation and corrosion of the metal shielding material. When the handle cable 100 comes into contact with and rubs against metal parts, the first outer sheath 5 acts as an insulating medium to prevent the shielding layer from contacting other conductors and causing a short circuit. By setting the outer sheath material with a specific hardness, the bending flexibility of the cable is maintained while ensuring mechanical protection, avoiding relative displacement between the shielding layer and the wire core caused by repeated bending. The longitudinal groove structure ensures uniform stress distribution when the cable is bent, reducing the risk of fatigue damage to the shielding layer caused by localized stress concentration.

[0072] Understandably, by setting the first outer sheath 5, further protection is achieved for the first cable 2 and the second cable 3. The first outer sheath 5 covers the outside of the shielding layer, providing additional mechanical protection for the cable and enhancing its abrasion resistance and tensile strength. At the same time, the first outer sheath 5 also serves as insulation, further reducing the impact of electromagnetic interference and improving the stability and reliability of signal transmission. In addition, the setting of the first outer sheath 5 gives the cable a better appearance and feel, making it easier for operators to use and maintain.

[0073] like Figure 1 and Figure 2 As shown, in one embodiment, the wrapping structure 1 includes a second outer sheath 11 and a metal shielding plate. The second outer sheath 11 forms a wire cavity 111, and the first cable 2 and the second cable 3 are disposed in the wire cavity 111. The metal shielding plate is located in the wire cavity 111 and is located in at least a portion of the area between the first cable 2 and the second cable 3.

[0074] In this embodiment, the second outer sheath 11 is made of insulating material, such as polyvinyl chloride, thermoplastic polyurethane, or polyethylene. The second outer sheath 11 is completely wrapped around the outer surface of the shielding layer by extrusion molding to form a continuous and sealed tubular structure. The second outer sheath 11 forms a central cavity 111, which is a closed space for accommodating the first cable 2 and the second cable 3. The metal shielding plate is a conductive metal plate or a metal mesh structure, which is embedded inside the cavity 111 and located between the first cable 2 and the second cable 3 to separate the first cable 2 and the second cable 3. The length of the metal shielding plate covers the side-by-side area of ​​the first cable 2 and the second cable 3, and the width matches the internal space of the cavity 111. Furthermore, the wrapping structure 1 also includes a corrugated tube 6, which is sleeved on the outside of the second outer sheath 11, that is, on the side facing away from the inside of the first cable 2 and the second cable 3, to protect the overall handle cable 100.

[0075] Specifically, the first cable 2 and the second cable 3 are fixed on both sides inside the cavity 111; a metal shielding plate is embedded in the middle area of ​​the cavity 111, which physically isolates and blocks the electromagnetic coupling path between the first cable 2 and the second cable 3. The conductivity of the metal shielding plate can absorb or reflect high-frequency interference signals, reducing crosstalk between cables. For example, the metal shielding plate is made of stainless steel sheet or copper plate, and is fixed to the inner wall of the cavity 111 by snap-fit ​​or adhesive.

[0076] Understandably, by setting up a metal shielding plate to establish a physical isolation barrier between the power signal line and the signal line, the coupling and conduction of high-frequency electromagnetic fields between the two types of cables are effectively blocked, thereby reducing the electromagnetic interference of the power signal generated by the second cable 3 on the internal signal of the first cable 2. This structure confines the high-frequency harmonic interference generated by the power signal line to an independent channel, while suppressing the electromagnetic noise radiated by the control signal line. This reduces the risk of excessive radiation caused by the antenna effect of the handle cable 100, ensuring the transmission stability of the button detection signal and the host communication signal during the operation of the therapeutic device.

[0077] like Figure 1 and Figure 2 As shown, in one embodiment, the wrapping structure 1 further includes an outer shielding layer 12, which covers the first cable 2, the second cable 3, and the metal shielding plate; the outer shielding layer 12 is one of conductive rubber, carbon black conductive polymer, metal powder conductive polymer, and carbon nanotubes, and the outer shielding layer 12 fills the wire cavity 111 and covers the first cable 2 and the second cable 3 respectively; or, the outer shielding layer 12 is a metal braided shielding mesh.

[0078] In this embodiment, the second outer sheath 11 forms a cavity 111 that accommodates the first cable 2, the second cable 3, and the metal shielding plate. When the outer shielding layer 12 is made of one of conductive rubber, carbon black conductive polymer, metal powder conductive polymer, or carbon nanotubes, the aforementioned material can directly fill the cavity 111 to form a continuous conductive network and conductive pathway. For example, when using a carbon black conductive polymer, the carbon black particles in the polymer matrix form a conductive network that covers the cable surface; when using a metal powder conductive polymer, the metal powder is dispersed in the polymer matrix to achieve conductivity; when using carbon nanotubes, the carbon nanotubes are arranged in a winding or oriented manner to construct the conductive layer. As an alternative, a metal braided shielding mesh is formed into a mesh structure by weaving, completely covering the outside of the cable and the metal shielding plate.

[0079] Specifically, when the outer shielding layer 12 fills the wire cavity 111, conductive rubber or conductive polymer material flows inside the wire cavity 111, tightly wrapping the cable surface and the edge of the metal shielding plate, eliminating the air gap between the metal shielding plate and the cable, and blocking the path of high-frequency electromagnetic waves radiating outward through the gap. When the outer shielding layer 12 is a metal braided shielding mesh, the metal mesh forms a dense covering layer by mechanical weaving, wrapping the entire cable bundle and the metal shielding plate, forming a Faraday cage structure, further suppressing electromagnetic interference leakage. Both implementations form a multi-layer electromagnetic shielding system through the cooperation of the outer shielding layer 12 and the metal shielding plate. The outer shielding layer 12 absorbs or reflects high-frequency interference, while the metal shielding plate blocks the conduction path of low-frequency interference, thereby achieving effective suppression of electromagnetic interference across the entire frequency band. Furthermore, the metal shielding plate and the outer shielding layer 12 work together to improve the electromagnetic isolation effect under high-frequency interference, solving the problem of excessive radiation from the handle cable 100.

[0080] Understandably, this application uses an outer shielding layer 12 to completely cover the cable assembly structure, further forming a fully enclosed electromagnetic shielding environment on the basis of the metal shielding plate separating the cables. This effectively suppresses the reflection and coupling of high-frequency electromagnetic interference inside the encapsulation structure 1. The use of a conductive structure or a metal braided shielding mesh structure to form a continuous conductive path with the metal shielding plate allows the interference current to be discharged along multiple paths, significantly reducing the crosstalk intensity of high-frequency signals between cables. This avoids electromagnetic interference of power signals on control signals, which could lead to an increase in the communication error rate. At the same time, it reduces the electromagnetic field intensity radiated from the outside of the cables, ensuring that the EMC performance of the therapeutic device under 7MHz high-frequency drive meets the requirements of medical equipment standards.

[0081] This utility model also proposes an ultrasonic therapy device, which includes a main unit, a handle, and a handle cable 100 as described above. The main unit and the handle are electrically and signal connected through the handle cable 100. The specific structure of the handle cable 100 is as described in the foregoing embodiments. Since this ultrasonic therapy device adopts all the technical solutions of all the foregoing embodiments, it has at least all the beneficial effects brought about by the technical solutions of the foregoing embodiments, which will not be described in detail here.

[0082] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the technical concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A handle cable, said handle cable being used in a therapeutic device for connecting the main unit and handle of the therapeutic device, characterized in that, The handle cable includes a wrapping structure, a first cable, and a second cable, wherein the wrapping structure is wrapped around the first cable and the second cable; The first cable is configured to transmit power signals and control signals, and the second cable is configured to transmit power signals. The outer wall of the first cable and / or the second cable is provided with a shielding layer to electromagnetically isolate the first cable and the second cable from each other.

2. The handle cable as described in claim 1, characterized in that, The first cable includes a first shielding mesh, a signal core, and a power core, wherein the power core and the signal core are twisted together coaxially. The first shielding mesh covers the outside of the power core and the signal core to form the shielding layer.

3. The handle cable as described in claim 1, characterized in that, The first cable includes a metal foil layer, a signal core, and a power core, wherein the power core and the signal core are coaxially twisted together. The metal foil layer covers the outside of the power core and the signal core to form the shielding layer; The metal foil layer is one of aluminum foil paper layer, aluminum-plastic composite layer, copper foil paper layer, and copper-plastic composite layer.

4. The handle cable as described in claim 1, characterized in that, The first cable includes a first shielding mesh, a metal foil layer, a signal core, and a power core, wherein the power core and the signal core are coaxially twisted together. The metal foil layer covers the outside of the power core and the signal core, and the first shielding mesh is disposed on the side of the metal foil layer facing away from the power core and the signal core. The metal foil layer and the first shielding mesh form the shielding layer.

5. The handle cable as described in any one of claims 1 to 4, characterized in that, The second cable includes: Power conductor; An insulating layer, the insulating layer covering the periphery of the power conductor; and The second shielding mesh covers the side of the insulation layer facing away from the power conductor.

6. The handle cable as described in claim 5, characterized in that, The handle cable also includes a plug, the plug having a first grounding terminal, and the second shielding mesh being a metal braided shielding mesh, which is electrically connected to the first grounding terminal; And / or, the handle cable further includes a plug, the plug having a second grounding terminal, the first cable having a first shielding mesh, the first shielding mesh being a metal braided shielding mesh, and the first shielding mesh being electrically connected to the second grounding terminal.

7. The handle cable as described in any one of claims 1 to 4, characterized in that, The first cable and / or the second cable each include a first outer sheath, which covers the outside of the shielding layer.

8. The handle cable as described in any one of claims 1 to 4, characterized in that, The packaging structure includes a second outer sheath and a metal shielding plate, the second outer sheath forming a wire cavity, and the first cable and the second cable are disposed in the wire cavity; The metal shielding plate is located in the wire cavity and in at least a portion of the area between the first cable and the second cable.

9. The handle cable as described in claim 8, characterized in that, The packaging structure also includes an outer shielding layer, which covers the first cable, the second cable, and the metal shielding plate. The outer shielding layer is one of conductive rubber, carbon black conductive polymer, metal powder conductive polymer, and carbon nanotube. The outer shielding layer fills the wire cavity and covers the first cable and the second cable respectively. Alternatively, the outer shielding layer may be a metal woven shielding mesh.

10. An ultrasonic therapy device, characterized in that, The ultrasound therapy device includes a main unit, a handle, and a handle cable as described in any one of claims 1 to 9, wherein the main unit and the handle are electrically and signal connected via the handle cable.

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