Surgical ultrasonic transducer with feedback regulation and surgical ultrasonic equipment

Abstract

The utility model belongs to the technical field of medical instruments, and discloses a surgical ultrasonic transducer with feedback regulation and surgical ultrasonic equipment. The surgical ultrasonic transducer with the feedback regulation function comprises a first piezoelectric structure and a second piezoelectric structure, the first piezoelectric structure is used for receiving ultrasonic oscillation signals output by an ultrasonic signal generation device, the first piezoelectric structure and the second piezoelectric structure are separated by an insulating part, and when the first piezoelectric structure generates ultrasonic vibration, the second piezoelectric structure generates ultrasonic oscillation signals. And the second piezoelectric structure synchronously vibrates and generates an alternating electric signal. The ultrasonic oscillation signal of the first piezoelectric structure is output after the ultrasonic signal generating device is dynamically adjusted according to the amplitude change of the alternating electric signal, and the problems that the output stability of the ultrasonic handle is insufficient and the amplitude is attenuated after the ultrasonic handle is used for many times are solved by dynamically adjusting the output signal of the ultrasonic signal generating device. And the problem that the cutting efficiency is reduced is solved.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a surgical ultrasound transducer with feedback adjustment and a surgical ultrasound device. Background Technology

[0002] When using ultrasound to achieve functions such as cutting, closing, and coagulation, the most important indicator for evaluating the effectiveness of ultrasound is the stability of its amplitude. Therefore, a stable amplitude output from the ultrasonic handpiece is usually required to ensure effective separation of soft or hard tissues. The impedance of the ultrasonic scalpel head mounted on the ultrasonic transducer changes when it contacts different tissues. The core component of the ultrasonic handpiece's vibration is a piezoelectric ceramic, which exhibits aging and degradation characteristics. With prolonged storage time or increased usage, the performance of the piezoelectric ceramic gradually deteriorates, and the amplitude of the ultrasonic handpiece decreases. After a certain number of uses, this may lead to malfunctions in ultrasonic cutting, closing, and coagulation.

[0003] Therefore, there is an urgent need for a surgical ultrasound transducer and surgical ultrasound equipment with feedback adjustment to solve the above-mentioned technical problems. Utility Model Content

[0004] The purpose of this invention is to provide a surgical ultrasound transducer and surgical ultrasound equipment with feedback adjustment, which aims to solve the problems of unstable output amplitude of existing ultrasound devices and the tendency of piezoelectric structure aging and decay to lead to amplitude reduction. The output amplitude of the surgical ultrasound transducer and surgical ultrasound equipment with feedback adjustment is consistent, which has high safety in use and ensures the safety and effectiveness of ultrasound minimally invasive surgery.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A surgical ultrasound transducer with feedback adjustment, comprising:

[0007] The first piezoelectric structure is used to receive the ultrasonic oscillation signal output by the ultrasonic signal generating device in order to generate ultrasonic vibration;

[0008] The second piezoelectric structure is located at the rear end of the first piezoelectric structure and is mounted on the same axis as the first piezoelectric structure; the first piezoelectric structure and the second piezoelectric structure are separated by an insulating element; wherein...

[0009] The front and rear ends of the first piezoelectric structure are separated by insulating materials, and the front and rear ends of the second piezoelectric structure are also separated by insulating materials. When the first piezoelectric structure undergoes ultrasonic vibration, the second piezoelectric structure vibrates synchronously and generates an alternating electrical signal. The amplitude of the alternating electrical signal can be captured and measured in real time by a signal acquisition device connected to the second piezoelectric structure. The ultrasonic oscillation signal for the first piezoelectric structure is output after dynamically adjusting the ultrasonic signal generating device according to the amplitude change of the alternating electrical signal.

[0010] In some possible implementations, the first piezoelectric structure includes a plurality of stacked first piezoelectric ceramics and a first electrode sheet disposed at both ends and between the plurality of first piezoelectric ceramics; the second piezoelectric structure includes one or more second piezoelectric ceramics and a second electrode sheet disposed at both ends of one second piezoelectric ceramic or disposed at both ends and between the plurality of second piezoelectric ceramics.

[0011] In some possible implementations, the device further includes a front cover plate, an insulating structure for a metal rod sleeved on the front cover plate, and a rear cover plate covering the end of the metal rod away from the front cover plate. The first piezoelectric structure and the second piezoelectric structure are both sleeved on the insulating structure. The insulating element is disposed between the front end of the first piezoelectric structure and the front cover plate, and between the front end of the rear cover plate and the rear end of the second piezoelectric structure.

[0012] In some possible implementations, a preload element is also included, which is disposed on the side of the rear cover away from the insulator, for applying a preload force to the first piezoelectric structure, the second piezoelectric structure, the plurality of insulators, and the rear cover.

[0013] In some possible implementations, the rear cover is provided with internal threads, which can be mounted onto the external threads of the metal rod to apply a preload to the first piezoelectric structure, the second piezoelectric structure, and the plurality of insulating elements.

[0014] In some possible implementations, the insulating element is an insulating pad or an insulating board.

[0015] In some possible implementations, the insulating structure is provided as an insulating sleeve, insulating tape, insulating film, insulating adhesive, or insulating varnish.

[0016] This utility model also provides a surgical ultrasound transducer with feedback adjustment, including a front cover plate, an insulating sleeve for a metal rod sleeved on the front cover plate, a first piezoelectric structure and a second piezoelectric structure sequentially sleeved on the insulating sleeve, and a rear cover plate covering the end of the metal rod away from the front cover plate. An insulating plate is provided between the front cover plate and the front end of the first piezoelectric structure, an insulating plate is provided between the rear end of the first piezoelectric structure and the front end of the second piezoelectric structure, and an insulating plate is provided between the rear end of the second piezoelectric structure and the rear cover plate. When the first piezoelectric structure undergoes ultrasonic vibration, the second piezoelectric structure vibrates synchronously and generates an alternating electrical signal. The amplitude of the alternating electrical signal can be captured and measured in real time by a signal acquisition device connected to the second piezoelectric structure. The ultrasonic oscillation signal for the first piezoelectric structure is output after dynamically adjusting the ultrasonic signal generating device according to the amplitude change of the alternating electrical signal.

[0017] In some possible implementations, a preload is included, which is disposed on the side of the rear cover away from the insulating plate, for applying a preload force to the first piezoelectric structure, the second piezoelectric structure, the plurality of insulating plates, and the rear cover.

[0018] This utility model also provides a surgical ultrasound device with feedback adjustment, including a surgical ultrasound transducer with feedback adjustment as described in any of the above embodiments and a main unit connected to the surgical ultrasound transducer, wherein the main unit includes the ultrasonic signal generating device and the signal acquisition device.

[0019] The beneficial effects of this utility model are:

[0020] This invention provides a surgical ultrasound transducer with feedback regulation. By setting a first piezoelectric structure and a second piezoelectric structure, when the first piezoelectric structure vibrates ultrasonically, the second piezoelectric structure vibrates synchronously and generates an alternating electrical signal. A signal acquisition device captures and measures this alternating electrical signal in real time. When the alternating electrical signal is less than the value corresponding to a preset amplitude, the ultrasonic oscillation signal output by the ultrasonic signal generating device is dynamically adjusted according to the amplitude change of the alternating electrical signal until the alternating electrical signal captured and measured by the signal acquisition device returns to the preset value. Therefore, the output of the surgical ultrasound transducer with feedback regulation can be controlled. Consistent amplitude ensures the safety and effectiveness of minimally invasive ultrasound surgery, while also preventing premature product failure due to performance degradation of the piezoelectric structure, thus extending the service life of the surgical ultrasound transducer with feedback adjustment. The first and second piezoelectric structures are separated by an insulating component. The front and rear ends of the first and second piezoelectric structures are also separated by insulating components. This design ensures that the surgical ultrasound transducer with feedback adjustment and the part of the blade connected to the transducer that comes into contact with the human body are not charged, preventing leakage and ensuring high safety in use.

[0021] This invention provides another type of surgical ultrasound transducer with feedback adjustment. By setting a first piezoelectric structure and a second piezoelectric structure, when the first piezoelectric structure vibrates ultrasonically, the second piezoelectric structure vibrates synchronously and generates an alternating electrical signal. A signal acquisition device captures and measures this alternating electrical signal in real time. When the alternating electrical signal is less than or greater than the alternating electrical signal corresponding to a preset amplitude, the ultrasonic oscillation signal output by the ultrasonic signal generating device is dynamically adjusted according to the amplitude change of the alternating electrical signal until the alternating electrical signal captured and measured by the signal acquisition device returns to the preset value. Therefore, the output amplitude consistency of this surgical ultrasound transducer with feedback adjustment can be controlled, ensuring the safety of minimally invasive ultrasonic surgery. This design ensures safety and effectiveness, while also preventing premature product failure due to performance degradation of the piezoelectric structure, thus extending the service life of the surgical ultrasound transducer with feedback adjustment. By insulating the first piezoelectric structure and the metal rod with an insulating sleeve, and by insulating the second piezoelectric structure and the metal rod with an insulating plate, the front cover plate is isolated from the first piezoelectric structure, the first piezoelectric structure from the second piezoelectric structure, and the second piezoelectric structure from the rear cover plate. This configuration ensures that the surgical ultrasound transducer with feedback adjustment and the parts of the surgical head connected to the transducer that come into contact with the human body are not electrified, preventing leakage and providing high safety in use.

[0022] This invention also provides a surgical ultrasound device with feedback adjustment, including the aforementioned surgical ultrasound transducer with feedback adjustment, which has high safety and reliability in use. Attached Figure Description

[0023] Figure 1 This is an exploded view of the surgical ultrasound transducer and blade with feedback adjustment provided in this embodiment of the present invention;

[0024] Figure 2 This is a side view of the assembled surgical ultrasound transducer with feedback adjustment and the blade provided in this embodiment of the present invention;

[0025] Figure 3 yes Figure 2 Cross-sectional view at point AA;

[0026] Figure 4 This is a schematic diagram of the structure of the first electrode sheet and the second electrode sheet provided in the embodiment of this utility model;

[0027] Figure 5 This is a schematic diagram of the structure of the first piezoelectric ceramic and the second piezoelectric ceramic provided in the embodiment of this utility model;

[0028] Figure 6 This is a schematic diagram of the structure of the surgical ultrasound device with feedback adjustment provided in this embodiment of the present invention.

[0029] In the diagram: 10. Surgical ultrasound transducer; 20. Main unit; 21. Ultrasonic signal generating device; 22. Signal acquisition device; 30. Blade head;

[0030] 100, Front cover plate; 200, Insulating sleeve; 310, First electrode plate; 320, First piezoelectric ceramic; 410, Second electrode plate; 420, Second piezoelectric ceramic; 500, Insulating plate; 600, Rear cover plate; 700, Preload. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0032] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature. It should be noted that in this embodiment, "front end" refers to the end closer to the blade head, and "rear end" refers to the end farther from the blade head.

[0034] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0035] The surgical ultrasound transducer and surgical ultrasound device with feedback adjustment provided in this embodiment aim to solve the problems of unstable output amplitude of existing ultrasound devices and the easy decrease in amplitude due to aging and decay of piezoelectric structures. The output amplitude of the surgical ultrasound transducer and surgical ultrasound device with feedback adjustment is consistent. The setting of insulating parts and insulating structures in the transducer makes the blade connected to the transducer have high safety in use, ensuring the safety and effectiveness of ultrasound minimally invasive surgery.

[0036] like Figures 1 to 5As shown, the surgical ultrasound transducer 10 includes a first piezoelectric structure and a second piezoelectric structure. The first piezoelectric structure receives the ultrasonic oscillation signal output by the ultrasonic signal generating device 21 to generate ultrasonic vibration, thereby driving the blade 30 connected to the surgical ultrasound transducer 10 to vibrate and achieve the surgical effect. The second piezoelectric structure is located at the rear end of the first piezoelectric structure. The second piezoelectric structure and the first piezoelectric structure are mounted on the same axis. Essentially, the first and second piezoelectric structures are mounted on the same component. The first and second piezoelectric structures are separated by an insulating element, wherein the front and rear ends of the first and second piezoelectric structures are separated by an insulating element. When the first piezoelectric structure generates ultrasonic vibration, the second piezoelectric structure vibrates synchronously and generates an alternating electrical signal. The amplitude of the alternating electrical signal can be captured and measured in real time by the signal acquisition device 22 connected to the second piezoelectric structure. The ultrasonic oscillation signal to the first piezoelectric structure is output after dynamically adjusting the ultrasonic signal generating device 21 according to the amplitude change of the alternating electrical signal. The ultrasonic signal generating device 21 can be, for example, an ultrasonic generator, a square wave transmitter, or an FPGA-based ultrasonic signal generator. The signals in the signal acquisition device 22 can be, for example, current, voltage, frequency, and impedance. Therefore, the signal acquisition device 22 can be an ammeter, voltmeter, multimeter, impedance analyzer, or radio frequency impedance tester.

[0037] The aforementioned surgical ultrasound transducer 10, by incorporating a first piezoelectric structure and a second piezoelectric structure, allows the second piezoelectric structure to vibrate synchronously and generate an alternating electrical signal when the first piezoelectric structure undergoes ultrasonic vibration. The signal acquisition device 22 captures and measures this alternating electrical signal in real time. The first piezoelectric structure is connected to the ultrasonic output signal of the ultrasonic signal generating device 21, generating ultrasonic vibration through the inverse piezoelectric effect of the piezoelectric ceramic in the first piezoelectric structure. The second piezoelectric structure and the signal acquisition device 22 utilize the piezoelectric effect to achieve their functions. When the first piezoelectric structure vibrates, the piezoelectric ceramic in the second piezoelectric structure generates an alternating signal due to repeated elongation and compression. The signal acquisition device 22 can capture and measure the amplitude of this signal. When the amplitude of the surgical ultrasound transducer 10 is large, the generated electrical signal is strong; when the amplitude is weak, the electrical signal is weak. When the alternating electrical signal is less than the alternating electrical signal corresponding to the preset amplitude, the ultrasonic oscillation signal output by the ultrasonic signal generating device 21 is dynamically adjusted according to the amplitude change of the alternating electrical signal, thereby changing the amplitude of the first piezoelectric structure until the alternating electrical signal captured and measured by the signal acquisition device 22 recovers to the preset value. Therefore, the output amplitude consistency of the surgical ultrasonic transducer 10 can be controlled, ensuring the safety and effectiveness of minimally invasive ultrasonic surgery. Simultaneously, it can avoid premature product failure due to piezoelectric structure performance degradation, extending the usable life of the surgical ultrasonic transducer 10. For example, when the alternating electrical signal of the surgical ultrasonic transducer 10 decreases by 80% due to piezoelectric structure performance degradation, the ultrasonic oscillation signal output by the ultrasonic signal generating device 21 is dynamically adjusted to restore the alternating electrical signal to the factory setting value. In addition, the first piezoelectric structure and the second piezoelectric structure are separated by an insulating component. The front and rear ends of the first piezoelectric structure are separated by an insulating component, and the front and rear ends of the second piezoelectric structure are separated by an insulating component. This arrangement ensures that the surgical ultrasound transducer 10 and the part of the blade 30 connected to the surgical ultrasound transducer 10 that comes into contact with the human body are not electrified and will not cause leakage, thus providing high safety in use.

[0038] The first piezoelectric structure includes multiple stacked first piezoelectric ceramics 320 and first electrode sheets 310 disposed at both ends and between the multiple first piezoelectric ceramics 320; the second piezoelectric structure includes one or more second piezoelectric ceramics 420 and second electrode sheets 410 disposed at both ends of one second piezoelectric ceramic 420 or at both ends and between the multiple second piezoelectric ceramics 420. For example, as... Figure 1 , Figure 4 and Figure 5As shown, the first piezoelectric structure includes six first piezoelectric ceramics 320 and seven first electrode plates 310. A first piezoelectric ceramic 320 is disposed between adjacent first electrode plates 310. These first electrode plates 310 are connected in two groups, forming the positive and negative electrodes of the first piezoelectric structure, respectively. The second piezoelectric structure includes one second piezoelectric ceramic 420 and two second electrode plates 410. The second piezoelectric ceramic 420 is disposed between the two second electrode plates 410. Alternatively, the two second electrode plates 410 are respectively disposed at both ends of the second piezoelectric ceramic 420 (i.e., abutting against the insulating parts at both ends of the second piezoelectric ceramic 420). These two second electrode plates 410 respectively form the positive and negative electrodes of the second piezoelectric structure, thereby forming a separate electrical circuit. The second piezoelectric structure may, when appropriate, have multiple second piezoelectric ceramics 420 and multiple second electrode plates 410. Specifically, the second electrode plates 410 are disposed at both ends of the multiple second piezoelectric ceramics 420 (i.e., against the insulating members at both ends of the second piezoelectric ceramics 420) and between each adjacent pair of second piezoelectric ceramics 420. These second electrode plates 410 are divided into two groups of electrical connections, forming the positive and negative electrodes of the second piezoelectric structure, respectively, forming another separate electrical circuit. In this way, the first piezoelectric structure and the second piezoelectric structure each form an independent electrical circuit. In other embodiments, the number of first piezoelectric ceramics 320, second piezoelectric ceramics 420, first electrode plates 310, and second electrode plates 410 is set as needed.

[0039] The surgical ultrasound transducer 10 also includes a front cover plate 100, an insulating structure for a metal rod sleeved on the front cover plate 100, and a rear cover plate 600 covering the end of the metal rod furthest from the front cover plate 100. Both the first and second piezoelectric structures are sleeved on the insulating structure. An insulating element is provided between the front end of the first piezoelectric structure and the front cover plate 100, and between the front end of the rear cover plate 600 and the rear end of the second piezoelectric structure. The insulating structure isolates the metal rod from the first piezoelectric structure and the second piezoelectric structure. The insulating element isolates the first piezoelectric structure from the front cover plate 100 and the second piezoelectric structure from the rear cover plate 600. This ensures that the surgical ultrasound transducer 10 and the portion of the surgical blade 30 connected to the transducer 10 that comes into contact with the human body are not electrified, preventing leakage and providing high safety. The insulating element is an insulating pad or insulating plate 500. The insulation structure is set as an insulating sleeve 200, but it can also be insulating tape, insulating film, insulating adhesive, or insulating varnish, etc. In actual implementation, the specific type of insulating component and insulation structure can be set as needed.

[0040] Furthermore, the surgical ultrasound transducer 10 also includes a pre-tightening member 700, which is disposed on the side of the rear cover plate 600 away from the insulating members, for applying a pre-tightening force to the first piezoelectric structure, the second piezoelectric structure, the multiple insulating members, and the rear cover plate 600. Additionally, the pre-tightening member 700 is also mounted on the metal rod. This arrangement prevents loosening between the first piezoelectric structure, the second piezoelectric structure, the multiple insulating members, and the rear cover plate 600 under external force, ensuring a more secure connection and enhancing connection reliability and tightness. Secondly, the pre-tightening member 700 can increase the pre-tightening force on the first and second piezoelectric structures, resulting in tighter contact between the piezoelectric ceramics and the electrode plates, and more consistent vibration of each piezoelectric ceramic during vibration. In this embodiment, the pre-tightening member 700 can be configured as a hexagonal nut, which can be installed onto the external thread of the metal rod via its internal thread. In another embodiment, the rear cover plate 600 is provided with internal threads, which can be installed onto the external threads of the metal rod, thereby applying a preload to the first piezoelectric structure, the second piezoelectric structure, and the multiple insulating components. This results in a tighter contact between the piezoelectric ceramics and the electrode plates, and more consistent vibration of each piezoelectric ceramic during vibration. This arrangement also simplifies the overall structure of the surgical ultrasound transducer 10 with feedback adjustment.

[0041] The surgical ultrasound device with feedback adjustment provided in this embodiment is described in [reference needed]. Figure 6 The system includes the aforementioned surgical ultrasound transducer 10 with feedback adjustment and a host unit 20 connected to the surgical ultrasound transducer 10. The host unit 20 includes an ultrasound signal generating device 21 and a signal acquisition device 22. Preferably, the host unit 20 internally integrates an ultrasound signal generating module and a signal acquisition module that can include functions similar to the ultrasound signal generating device 21 and the signal acquisition device 22, and the acquired information can be directly displayed on the screen of the host unit 20. By adjusting the oscillation signal output by the host unit 20 to the ultrasound handpiece, the amplitude of the electrical signal captured and measured by the signal acquisition device 22 is stabilized, thereby stabilizing the output amplitude of the ultrasound handpiece.

[0042] The surgical ultrasound device with feedback adjustment also includes a blade head 30. The blade head 30 and the aforementioned surgical ultrasound transducer 10 constitute the ultrasonic handle of the surgical ultrasound device with feedback adjustment. The front end of the front cover plate 100 is threaded and is fixed to the blade head 30 through a threaded connection. When the first piezoelectric structure generates ultrasonic vibration, it can drive the working tip of the blade head 30 to vibrate.

[0043] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A surgical ultrasound transducer with feedback adjustment, characterized in that, include: The first piezoelectric structure is used to receive the ultrasonic oscillation signal output by the ultrasonic signal generating device in order to generate ultrasonic vibration; The second piezoelectric structure is located at the rear end of the first piezoelectric structure and is mounted on the same axis as the first piezoelectric structure; the first piezoelectric structure and the second piezoelectric structure are separated by an insulating element; wherein... The front and rear ends of the first piezoelectric structure are separated by insulating materials, and the front and rear ends of the second piezoelectric structure are also separated by insulating materials. When the first piezoelectric structure undergoes ultrasonic vibration, the second piezoelectric structure vibrates synchronously and generates an alternating electrical signal. The amplitude of the alternating electrical signal can be captured and measured in real time by a signal acquisition device connected to the second piezoelectric structure. The ultrasonic oscillation signal for the first piezoelectric structure is output after dynamically adjusting the ultrasonic signal generating device according to the amplitude change of the alternating electrical signal.

2. The surgical ultrasound transducer according to claim 1, characterized in that, The first piezoelectric structure includes multiple stacked first piezoelectric ceramics and first electrode sheets disposed at both ends and between the multiple first piezoelectric ceramics; the second piezoelectric structure includes one or more second piezoelectric ceramics and second electrode sheets disposed at both ends of one second piezoelectric ceramic or disposed at both ends and between the multiple second piezoelectric ceramics.

3. The surgical ultrasound transducer according to claim 2, characterized in that, It also includes a front cover plate, an insulating structure for a metal rod sleeved on the front cover plate, and a rear cover plate covering the end of the metal rod away from the front cover plate. The first piezoelectric structure and the second piezoelectric structure are both sleeved on the insulating structure. The insulating element is provided between the front end of the first piezoelectric structure and the front cover plate, and the insulating element is provided between the front end of the rear cover plate and the rear end of the second piezoelectric structure.

4. The surgical ultrasound transducer according to claim 3, characterized in that, It also includes a pre-tightening member disposed on the side of the rear cover away from the insulating member, for applying a pre-tightening force to the first piezoelectric structure, the second piezoelectric structure, the plurality of insulating members and the rear cover.

5. The surgical ultrasound transducer according to claim 3, characterized in that, The rear cover plate is provided with an internal thread, which can be installed onto the external thread of the metal rod, thereby applying a preload to the first piezoelectric structure, the second piezoelectric structure, and the plurality of insulating components.

6. The surgical ultrasound transducer according to any one of claims 1-5, characterized in that, The insulating component is an insulating pad or an insulating board.

7. The surgical ultrasound transducer according to claim 3, characterized in that, The insulation structure is provided as an insulating sleeve, insulating tape, insulating film, insulating adhesive or insulating varnish.

8. A surgical ultrasound transducer with feedback adjustment, characterized in that, The device includes a front cover plate, an insulating sleeve for a metal rod fitted onto the front cover plate, a first piezoelectric structure and a second piezoelectric structure sequentially fitted onto the insulating sleeve, and a rear cover plate covering the end of the metal rod furthest from the front cover plate. An insulating plate is provided between the front cover plate and the front end of the first piezoelectric structure, between the rear end of the first piezoelectric structure and the front end of the second piezoelectric structure, and between the rear end of the second piezoelectric structure and the rear cover plate. When the first piezoelectric structure undergoes ultrasonic vibration, the second piezoelectric structure vibrates synchronously and generates an alternating electrical signal. The amplitude of the alternating electrical signal can be captured and measured in real time by a signal acquisition device connected to the second piezoelectric structure. The ultrasonic oscillation signal for the first piezoelectric structure is output after dynamically adjusting the ultrasonic signal generating device based on the amplitude change of the alternating electrical signal.

9. The surgical ultrasound transducer according to claim 8, characterized in that, The device includes a pre-tightening element disposed on the side of the rear cover plate away from the insulating plate, for applying a pre-tightening force to the first piezoelectric structure, the second piezoelectric structure, the plurality of insulating plates, and the rear cover plate.

10. A surgical ultrasound device with feedback adjustment, characterized in that, The device includes a surgical ultrasound transducer with feedback adjustment as described in any one of claims 1-9 and a host connected to the surgical ultrasound transducer, wherein the host includes the ultrasound signal generating device and the signal acquisition device.

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