Ultrasonic transducer and treatment head

Abstract

The embodiment of the invention discloses an ultrasonic transducer and a treatment head, which are used for preventing hidden dangers caused by expired use. The device comprises a shell, a piezoelectric device, a battery, a main control module, a failure device and a detection line, the shell is provided with an opening matched with the piezoelectric device, the piezoelectric device is fixedly arranged in the opening, so that the shell and the piezoelectric device define a cavity, the shell is provided with a mounting hole, and the mounting hole is used for mounting and connecting a signal line of the piezoelectric device; the battery, the main control module and the failure device are all arranged in the cavity, the detection line is laid on the inner side of the shell, the battery is used for supplying power to the main control module, the main control module is electrically connected with the failure device and the detection line, and the failure device is electrically connected with the detection line. And the main control module is used for controlling the failure device to work when the detection line is detected to be disconnected, so that the function of the piezoelectric device is failed.

Description

Technical Field

[0001] This application relates to the field of medical devices, and more particularly to an ultrasonic transducer and a treatment head. Background Technology

[0002] An ultrasonic transducer is a device that converts electrical energy into sound energy, enabling the treatment of specific parts of the human body using ultrasound waves. Each device has a lifespan, and ultrasonic transducers also have a limited number of uses. Expired ultrasonic transducers, after exceeding this limit, will output abnormal ultrasound energy, potentially leading to poor treatment outcomes and risks such as skin injury. Therefore, existing ultrasonic transducer designs incorporate a counter to accumulate the number of uses, causing the piezoelectric components to malfunction when a preset number of uses is reached.

[0003] However, some users may disassemble the ultrasonic transducer, remove the chip, and modify the usage count of the counter on the chip to continue using the expired ultrasonic transducer. Expired ultrasonic transducers pose certain safety hazards. Summary of the Invention

[0004] This application provides an ultrasonic transducer and a treatment head to prevent potential hazards caused by expired use.

[0005] The first aspect of this application provides an ultrasonic transducer, including: a housing, a piezoelectric device, a battery, a main control module, a failure device, and a detection line;

[0006] The housing is provided with an opening adapted to the piezoelectric device, and the piezoelectric device is fixedly disposed in the opening so that the housing and the piezoelectric device form a cavity. The housing is provided with a mounting hole for installing a signal line connected to the piezoelectric device.

[0007] The battery, the main control module, and the failure device are all disposed inside the cavity. The detection line is laid on the inner side of the housing. The battery is used to power the main control module. The main control module is electrically connected to the failure device and the detection line respectively. The main control module is used to control the failure device to work when the detection line is detected to be disconnected, thereby causing the piezoelectric device to fail.

[0008] Optionally, the ultrasonic transducer further includes a detection module;

[0009] The detection module is disposed inside the cavity and is electrically connected to the main control module. The detection module is used to detect changes in the electrical signal of the signal line and send the changes in the electrical signal to the main control module. The main control module is used to count the number of times the ultrasonic transducer is used based on the changes in the electrical signal detected by the detection module.

[0010] The main control module is also used to control the failed device to work after the number of uses reaches a preset number, thereby causing the piezoelectric device to fail.

[0011] Optionally, the detection module includes: an induction coil;

[0012] The induction coil is fixed inside the cavity, one of the signal lines passes through the inside of the induction coil and is connected to the piezoelectric device, and the two ends of the induction coil are connected to the main control module via wires;

[0013] The induction coil is used to detect changes in the electrical signal of the signal line to generate an induced current, and sends the induced current to the main control module.

[0014] Optionally, the detection module includes: a resistor;

[0015] One of the signal lines is connected to the piezoelectric device via the resistor, and the two ends of the resistor are connected to the main control module via wires;

[0016] The resistor is used to detect changes in the voltage signal of the signal line and send the changes in the voltage signal to the main control module.

[0017] Optionally, the failure device includes: a pressure assembly;

[0018] The main control module is electrically connected to the pressure component to control the pressure component to operate when the detection line is disconnected, so that the piezoelectric device breaks due to the pressure from the pressure component.

[0019] Optionally, the failed device includes: a heating wire;

[0020] The heating wire is attached to the piezoelectric device, and the main control module is electrically connected to the heating wire to heat the heating wire when the detection line is disconnected, so that the piezoelectric device is in a thermal depolarization state due to the high temperature of the heating wire.

[0021] Optionally, the failure device further includes: a fuse;

[0022] One of the signal lines is connected to the piezoelectric device via the fuse, which is attached to the heating wire to melt when the heating wire is at a high temperature.

[0023] Optionally, the detection line includes a top surface detection line and a side surface detection line; the top surface detection line is provided on the inner side of the top surface of the housing, and the side surface detection line is provided on the inner side of the side surface of the housing.

[0024] Optionally, the top surface detection lines are laid out in a spiral pattern of equal width on the inner side of the top surface of the housing.

[0025] A second aspect of this application provides a treatment head including an ultrasonic transducer as described above.

[0026] As can be seen from the above technical solutions, the embodiments of this application have the following advantages:

[0027] The ultrasonic transducer of this application has a detection line laid inside the housing. Therefore, when the ultrasonic transducer is disassembled by external force, the detection line will be broken. At this time, the main control module will control the failed device to work so that the piezoelectric device will fail and the piezoelectric device will not be usable. At this time, even if the counter value is changed, the ultrasonic transducer will not be usable, thus preventing the ultrasonic transducer from being used beyond its expiration date and avoiding safety hazards. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings.

[0029] Figure 1 This is a schematic diagram of an embodiment of an ultrasonic transducer disclosed in this application;

[0030] Figure 2 This is a schematic diagram of another embodiment of an ultrasonic transducer disclosed in this application;

[0031] Figure 3 This is a schematic diagram of the top surface inspection line disclosed in this application;

[0032] Figure 4 This is a schematic diagram of the side detection line disclosed in this application;

[0033] Figure 5 This is a schematic diagram of one embodiment of a treatment disclosed in this application.

[0034] The attached figures are labeled as follows:

[0035] 1. Housing; 2. Piezoelectric device; 3. Battery; 4. Main control module; 5. Failure device; 51. Heating wire; 52. Fuse; 6. Detection line; 61. Top detection line; 62. Side detection line; 7. Cavity; 8. Signal line; 9. Detection module; 91. Induction coil. Detailed Implementation

[0036] The present application will be further described in detail below with reference to the accompanying drawings.

[0037] This application provides an ultrasonic transducer and a treatment head to prevent potential hazards caused by expired use.

[0038] In the medical field, ultrasonic transducers are used to treat specific parts of the human body. All devices have a limited lifespan, and ultrasonic transducers also have a limited number of uses. Because ultrasonic transducers are not inexpensive, some users, for illegal reasons, disassemble them and alter the countdown timer to continue using expired transducers, posing a safety hazard. To address this issue, this application provides an ultrasonic transducer and treatment head. An anti-tamper detection wire is laid inside the ultrasonic transducer. Once the transducer is disassembled, the detection wire will break, rendering the transducer inoperable. Modifying the counter will then be ineffective, thus avoiding the safety hazard of using expired transducers.

[0039] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0040] The terms "first," "second," "third," "fourth," etc., used in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0041] An ultrasonic transducer according to this application is described below. Please refer to... Figure 1 An embodiment of an ultrasonic transducer according to this application includes: a housing 1, a piezoelectric device 2, a battery 3, a main control module 4, a failure device 5, and a detection line 6;

[0042] The housing 1 has an opening adapted to the piezoelectric device 2. The piezoelectric device 2 is fixedly disposed in the opening, so that the housing 1 and the piezoelectric device 2 form a cavity 7. The housing 1 has mounting holes for mounting the signal line 8 connecting the piezoelectric device 2. Specifically, the housing 1 can be cylindrical, cuboid, or frustum-shaped, depending on actual needs. No specific limitation is made here; in this embodiment, a cylindrical shape is used. The piezoelectric device 2 can be made of ceramic or other materials; no specific limitation is made here. In this embodiment, piezoelectric ceramic is used. The shape of the piezoelectric device 2 is also not limited. One embodiment is that the piezoelectric device 2 is concave spherical; in this embodiment, a concave spherical shape is used. The battery 3 is the sole power supply device for the ultrasonic transducer. The ultrasonic transducer does not require external power. The model of the battery 3 can be selected according to the actual main control module 4. The failure device 5 can function physically or chemically to cause the piezoelectric device 2 to malfunction when the ultrasonic transducer is disassembled or its usage cycle is exhausted. The specific number and form of the failure device 5 are not limited. The detection line 6 is firmly fixed to the inside of the housing 1 using adhesive or similar substances. The detection line 6 should not be too thick to facilitate detection of whether the housing 1 has been disassembled; the specific size is selected according to actual needs. The piezoelectric device 2 can be installed and fixed at an opening on the housing 1 to form a sealed cavity 7. The signal line 8 is used to activate the piezoelectric device 2 to emit ultrasonic energy.

[0043] The battery 3, the main control module 4, and the failure device 5 are all disposed inside the cavity 7. The detection line 6 is laid on the inner side of the housing 1. The battery 3 supplies power to the main control module 4. The main control module 4 is electrically connected to both the failure device 5 and the detection line 6. The main control module 4 controls the failure device 5 to operate when the detection line 6 is detected to be disconnected, thereby causing the piezoelectric device 2 to malfunction. Specifically, the detection line 6 can be laid as widely as possible, including on the top and sides of the inner side of the housing 1, and even on the back side of the piezoelectric device 2. The routing of the detection line 6 can be designed according to actual needs. When the housing 1 of the ultrasonic transducer is disassembled, the detection line 6 will be broken. The main control module 4 will detect that the detection line 6 is partially open and immediately control the failure device 5 to operate, causing the piezoelectric device 2 to malfunction.

[0044] The working principle of this embodiment will now be explained. The ultrasonic transducer housing 1 and the piezoelectric device 2 constitute a sealed cavity 7. The battery 3, the main control module 4, and the failure device 5 are placed inside the cavity 7. The detection line 6 is laid on the inside of the housing 1 with adhesive backing. When some users attempt to disassemble the ultrasonic transducer, the adhesive-backed detection line 6 will be torn off. The main control module 4 will immediately detect that the detection line 6 is partially open-circuited and control the failure device 5 to work. The failure device 5 will act on the piezoelectric device 2 through physical or chemical means, causing the piezoelectric device 2 to malfunction.

[0045] In this embodiment, a detection line 6 is laid inside the housing 1 of the ultrasonic transducer. Therefore, when the ultrasonic transducer is disassembled by external force, the detection line 6 will be torn off. At this time, the main control module 4 will control the failure device 5 to work so that the piezoelectric device 2 will fail and the piezoelectric device 2 will be unusable. Even if the counter value is changed, the ultrasonic transducer will not be usable, thus preventing the ultrasonic transducer from being used beyond its expiration date and avoiding safety hazards.

[0046] Please see Figure 2 Another embodiment of an ultrasonic transducer according to this application includes: a housing 1, a piezoelectric device 2, a battery 3, a main control module 4, a failure device 5, a detection line 6, and a detection module 9;

[0047] The housing 1 has an opening adapted to the piezoelectric device 2. The piezoelectric device 2 is fixedly disposed in the opening, so that the housing 1 and the piezoelectric device 2 form a cavity 7. The housing 1 has mounting holes for mounting the signal line 8 connecting the piezoelectric device 2. Specifically, the housing 1 can be cylindrical, cuboid, or frustum-shaped, depending on actual needs. No specific limitation is made here; in this embodiment, a cylindrical shape is used. The piezoelectric device 2 can be made of ceramic or other materials; no specific limitation is made here. In this embodiment, piezoelectric ceramic is used. The shape of the piezoelectric device 2 is also not limited. One embodiment is that the piezoelectric device 2 is concave spherical; in this embodiment, a concave spherical shape is used. The focusing surface of the piezoelectric device 2 faces outward. The battery 3 is the sole power supply device for the ultrasonic transducer. The ultrasonic transducer does not require external power. The model of the battery 3 can be selected according to the actual main control module 4. The failure device 5 can function physically or chemically to cause the piezoelectric device 2 to malfunction when the ultrasonic transducer is disassembled or its usage cycle is exhausted. The specific number and form of the failure device 5 are not limited. The detection line 6 is firmly fixed to the inside of the housing 1 using adhesive or similar substances. The detection line 6 should not be too thick to facilitate detection of whether the housing 1 has been disassembled; the specific size is selected according to actual needs. The piezoelectric device 2 can be installed and fixed at an opening on the housing 1 to form a sealed cavity 7. The signal line 8 is an energy input pin that can input signals such as sine waves to cause the piezoelectric device 2 to emit ultrasonic energy.

[0048] The battery 3, the main control module 4, and the failure device 5 are all disposed inside the cavity 7. The detection line 6 is laid on the inner side of the housing 1. The battery 3 supplies power to the main control module 4. The main control module 4 is electrically connected to both the failure device 5 and the detection line 6. The main control module 4 controls the failure device 5 to operate when the detection line 6 is detected to be disconnected, thereby causing the piezoelectric device 2 to malfunction. Specifically, the detection line 6 can be laid as widely as possible, including on the top and sides of the inner side of the housing 1, and even on the back side of the piezoelectric device 2. The routing of the detection line 6 can be designed according to actual needs. When the housing 1 of the ultrasonic transducer is disassembled, the detection line 6 will be broken. The main control module 4 will detect that the detection line 6 is partially open and immediately control the failure device 5 to operate, causing the piezoelectric device 2 to malfunction.

[0049] The detection module 9 is disposed inside the cavity 7 and is electrically connected to the main control module 4. The detection module 9 is used to detect changes in the electrical signal of the signal line 8 and send the changes in the electrical signal to the main control module 4. The main control module 4 is used to count the number of times the ultrasonic transducer is used based on the changes in the electrical signal detected by the detection module 9. The main control module 4 is also used to control the failure device 5 to work after the number of uses reaches a preset number, thereby causing the piezoelectric device 2 to fail.

[0050] The detection module 9 is used to detect the number of times the piezoelectric device 2 has been used. Specifically, this is achieved by detecting changes in the electrical signal of the signal line 8. An induction coil 91 or a resistor can be used; the specific method is not limited here. The following description uses an induction coil 91 and a resistor as examples. In one embodiment, the detection module 9 includes an induction coil 91.

[0051] An induction coil 91 is fixed inside the cavity 7. One of the signal lines 8 passes through the inside of the induction coil 91 and is connected to the piezoelectric device 2. The two ends of the induction coil 91 are connected to the main control module 4 via wires. The induction coil 91 is used to detect changes in the electrical signal of the signal line 8 to generate an induced current, and sends the induced current to the main control module 4. Specifically, using the principle of electromagnetics, when current flows through the signal line 8, the current generates a magnetic field, which causes the induction coil 91 to generate an induced current. The induced current flows to the main control module 4, and the main control module 4 counts based on changes in the induced current. The main control module 4 is equipped with a counter, and each change in the induced current counts once. The main control module 4 also presets a counting threshold and compares the real-time cumulative usage count with the counting threshold.

[0052] In another embodiment, the detection module 9 includes a resistor.

[0053] One of the signal lines 8 is connected to the piezoelectric device 2 via a resistor, and the two ends of the resistor are connected to the main control module 4 via wires. The resistor is used to detect changes in the voltage signal of the signal line 8 and send these changes to the main control module 4. Specifically, when current flows through the signal line 8, that is, when current flows through the two ends of the resistor, the voltage signal across the resistor is detected, and a count is performed based on the changes in the voltage signal. The counter in the main control module 4 compares the actual count with the counting threshold.

[0054] This embodiment uses induction coil 91 as an example for illustration.

[0055] The failure device 5 is used to disable the piezoelectric device 2, which can be achieved through physical or chemical means, etc., and is not limited here. Two implementation methods are described below.

[0056] In one embodiment, the failure device 5 includes a pressure component. The main control module 4 is electrically connected to the pressure component to control its operation when the detection line 6 is disconnected, causing the piezoelectric device 2 to break due to the pressure from the pressure component. Specifically, when the detection line 6 is disconnected, the main control module 4 detects that part of the detection line 6 is in an open circuit state. The main control module 4 controls the pressure component to operate, and the pressure component applies pressure to the piezoelectric device 2, causing the piezoelectric device 2 to break. The piezoelectric component can be a sharp object such as a small knife; the specific type is not limited here.

[0057] In another embodiment, the failure device 5 includes a heating wire 51. The heating wire 51 is attached to the piezoelectric device 2, and the main control module 4 is electrically connected to the heating wire 51 to heat the heating wire 51 when the detection line 6 is disconnected, causing the piezoelectric device 2 to enter a thermal depolarization state due to the high temperature of the heating wire 51. Specifically, when the detection line 6 is disconnected, the main control module 4 detects that part of the detection line 6 is open-circuited. The main control module 4 applies voltage to both ends of the heating wire 51, causing the heating wire 51 to heat up. The heating wire 51 raises the temperature of the piezoelectric device 2 to the Curie temperature, thus causing the piezoelectric device 2 to enter a thermal depolarization state and fail to function. The heating temperature and heating time of the heating wire 51 can be controlled to ensure that the piezoelectric device 2 undergoes thermal depolarization while preventing the coolant inside the treatment head from vaporizing and expanding after the piezoelectric device 2 burns through. In addition, to further prevent the use of expired ultrasonic transducers and disconnect the circuit of piezoelectric device 2, a fuse 52 can be added. Specifically, the failure device 5 also includes a fuse 52. One of the signal lines 8 is connected to piezoelectric device 2 via the fuse 52. The fuse 52 is attached to the heating wire 51 so that it will melt when the heating wire 51 is at a high temperature. Specifically, when the detection line 6 is disconnected, the heating wire 51 is heated. Since the fuse 52 is in close contact with the heating wire 51, when the temperature of the heating wire 51 rises to a certain level, the fuse 52 melts due to the high temperature, causing the electrical connection between one of the signal lines 8 connected to the fuse 52 and the piezoelectric device 2 to be disconnected. The piezoelectric device 2 then loses its power supply and cannot operate.

[0058] This embodiment uses heating wire 51 and fuse 52 as examples for illustration.

[0059] The detection line 6 is used to prevent the ultrasonic transducer housing 1 from being disassembled. The detection line 6 is laid inside the housing 1. If the housing 1 is disassembled, the detection line 6, secured firmly to the inside of the housing 1 by adhesive, will be torn. The specific laying method and electrical connection method of the detection line 6 are not specified here. Please refer to [link to relevant documentation]. Figure 3 and Figure 4In one embodiment, the detection line 6 includes a top detection line 61 and a side detection line 62. The top detection line 61 is provided on the inner side of the top surface of the housing 1, and the side detection line 62 is provided on the inner side of the side surface of the housing 1. The top detection line 61 is laid out in a spiral pattern of equal width on the inner side of the top surface of the housing 1. The side detection line 62 is spirally laid around the inner side of the cylindrical housing 1, so that every part of the housing 1 is covered with a detection line 6.

[0060] The working principle of this embodiment will now be illustrated by an example. When the detection line 6 is not disconnected, the piezoelectric device 2 of the ultrasonic transducer and the housing 1 form a sealed cavity 7, and the main control module 4 in the cavity 7 is independently powered by the battery 3. One end of signal line 8 is connected to an external power source, and the other end is connected to piezoelectric device 2. The positive and negative signal lines 8 form a circuit loop. Current flows through signal line 8, and piezoelectric device 2 works. Since current flows through one of the signal lines 8, which passes through the middle of induction coil 91, an induced current can be generated in induction coil 91 by electromagnetic principle. The main control module 4 receives the induced current, amplifies and processes it, and counts the periodic changes of the induced current to obtain the real-time cumulative usage count. It then determines whether the cumulative usage count is greater than the counting threshold. If the cumulative usage count is greater than the counting threshold, the main control module 4 controls the circuit of heating wire 51 to generate current, and heating wire 51 is heated. In this example, the heating temperature of the heating wire can be controlled to rise to 350°C within 1 second and remain there for 5 seconds. When the heating wire 51 gradually heats up, causing the temperature of the piezoelectric ceramic in close contact to exceed the Curie temperature, the piezoelectric ceramic undergoes thermal depolarization and cannot work. At the same time, the heating wire 51 causes the fuse 52 to heat up and disconnect. If the cumulative usage count is less than or equal to the counting threshold, the main control module 4 does not operate. When the ultrasonic transducer is disassembled, the detection line 6 laid inside the housing 1 is disconnected. The main control module 4 detects that the detection line 6 is partially open-circuited. The main control module 4 controls the heating wire 51 to heat up to burn out the piezoelectric device 2 and cause the fuse 52 to blow.

[0061] In this embodiment, a detection line 6 is laid inside the housing 1 of the ultrasonic transducer. Therefore, when the ultrasonic transducer is disassembled by external force, the detection line 6 will be broken. At this time, the main control module 4 will control the failure device 5 to work, causing the piezoelectric device 2 to malfunction. The piezoelectric device 2 cannot be used, and even if the counter value is changed, the ultrasonic transducer will still not be usable, preventing the ultrasonic transducer from being used beyond its expiration date and avoiding safety hazards. In addition, the detection module 9 and the failure device 5 can detect the cumulative number of times the ultrasonic transducer has been used to prevent it from being used beyond its expiration date.

[0062] The above describes an ultrasonic transducer according to an embodiment of this application. The following describes a treatment head according to an embodiment of this application. Please refer to... Figure 5 One embodiment of the treatment head in this application includes: the ultrasonic transducer of the above embodiment;

[0063] The ultrasonic transducer is housed within the outer shell of the treatment head, and the outer shell has a penetration port for the ultrasonic transducer to emit ultrasonic energy.

[0064] In this embodiment, the ultrasonic transducer in the treatment head can treat specific human tissues and prevent expired use, thus ensuring the safety of the treated person.

[0065] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing embodiments, and will not be repeated here.

[0066] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection between apparatuses or units through some interfaces, and may be electrical, mechanical, or other forms.

[0067] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0068] In addition, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0069] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this invention.

Claims

1. An ultrasonic transducer, characterized in that, include: Housing, piezoelectric components, battery, main control module, failed components, and testing lines; The housing is provided with an opening adapted to the piezoelectric device, and the piezoelectric device is fixedly disposed in the opening so that the housing and the piezoelectric device form a cavity. The housing is provided with a mounting hole for installing a signal line connected to the piezoelectric device. The battery, the main control module, and the failure device are all disposed inside the cavity. The detection line is laid on the inner side of the housing. The battery is used to power the main control module. The main control module is electrically connected to the failure device and the detection line respectively. The main control module is used to control the failure device to work when the detection line is detected to be disconnected, thereby causing the piezoelectric device to fail.

2. The ultrasonic transducer according to claim 1, characterized in that, The ultrasonic transducer also includes a detection module; The detection module is disposed inside the cavity and is electrically connected to the main control module. The detection module is used to detect changes in the electrical signal of the signal line and send the changes in the electrical signal to the main control module. The main control module is used to count the number of times the ultrasonic transducer is used based on the changes in the electrical signal detected by the detection module. The main control module is also used to control the failed device to work after the number of uses reaches a preset number, thereby causing the piezoelectric device to fail.

3. The ultrasonic transducer according to claim 2, characterized in that, The detection module includes: an induction coil; The induction coil is fixed inside the cavity, one of the signal lines passes through the inside of the induction coil and is connected to the piezoelectric device, and the two ends of the induction coil are connected to the main control module via wires; The induction coil is used to detect changes in the electrical signal of the signal line to generate an induced current, and sends the induced current to the main control module.

4. The ultrasonic transducer according to claim 2, characterized in that, The detection module includes: a resistor; One of the signal lines is connected to the piezoelectric device via the resistor, and the two ends of the resistor are connected to the main control module via wires; The resistor is used to detect changes in the voltage signal of the signal line and send the changes in the voltage signal to the main control module.

5. The ultrasonic transducer according to claim 1, characterized in that, The failed device includes: a pressure assembly; The main control module is electrically connected to the pressure component to control the pressure component to operate when the detection line is disconnected, so that the piezoelectric device breaks due to the pressure from the pressure component.

6. The ultrasonic transducer according to claim 1, characterized in that, The failed device includes: a heating wire; The heating wire is attached to the piezoelectric device, and the main control module is electrically connected to the heating wire to heat the heating wire when the detection line is disconnected, so that the piezoelectric device is in a thermal depolarization state due to the high temperature of the heating wire.

7. The ultrasonic transducer according to claim 6, characterized in that, The failed device also includes: a fuse; One of the signal lines is connected to the piezoelectric device via the fuse, which is attached to the heating wire to melt when the heating wire is at a high temperature.

8. The ultrasonic transducer according to claim 1, characterized in that, The detection lines include a top surface detection line and a side surface detection line; the top surface detection line is provided on the inner side of the top surface of the housing, and the side surface detection line is provided on the inner side of the side surface of the housing.

9. The ultrasonic transducer according to claim 8, characterized in that, The top surface detection lines are laid out in a spiral pattern of equal width on the inner side of the top surface of the shell.

10. A treatment head, characterized in that, Includes the ultrasonic transducer as described in any one of claims 1 to 9.

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