Power ultrasonic transducer with clamping function

Abstract

The invention discloses a power ultrasonic transducer with a clamping function, relates to the technical field of cardiovascular intervention medical instruments, and has the advantages that ultrasonic vibration is stably and efficiently transmitted to an external guide wire connected with an amplitude-change pole so as to act on a target area through the head end of the guide wire. According to the technical scheme, the amplitude transformer comprises a rear end cover and an amplitude transformer located on one side of the rear end cover and further comprises a connecting assembly, the connecting assembly comprises a pre-tightening bolt, a screw hole is formed in one end of the amplitude transformer, and one end of the pre-tightening bolt sequentially penetrates through the rear end cover, a first electrode plate, a first piezoelectric ceramic piece, a second electrode plate and a second piezoelectric ceramic piece. One end, penetrating out of the second piezoelectric ceramic piece, of the amplitude-change pole enters a screw hole of the amplitude-change pole and is in threaded fixation with the amplitude-change pole.

Description

Technical Field

[0001] The present invention relates to the technical field of cardiovascular interventional medical devices, in particular to a power ultrasonic transducer with a clamping function. Background Art

[0002] Blood enters the heart through two main coronary arteries and flows through a network of blood vessels on the surface of the heart muscle, nourishing the heart. Cholesterol and fat deposits form in the arteries, narrowing the passages. This condition is called atherosclerosis. Blood flowing through the arteries can form blood clots, further aggravating the narrowing or even completely blocking the arteries, leading to ischemic heart disease. During physical or psychological stress, the heart beats faster, increasing oxygen demand. However, the narrowed or blocked coronary arteries cannot provide an adequate blood supply, resulting in insufficient blood supply, causing angina pectoris or acute myocardial infarction, which can be life-threatening in severe cases.

[0003] Currently, the main treatments for coronary artery stenosis or occlusion include medication, balloon angioplasty, and stent implantation. Traditional percutaneous coronary artery angioplasty (PTCA) can be ineffective in certain cases of severely calcified or completely occluded lesions, potentially leading to restenosis or vascular damage. In recent years, ultrasound-assisted therapy has been gradually applied to cardiovascular intervention. Ultrasound energy is transmitted via a guidewire to the site of vascular stenosis or occlusion, using high-frequency mechanical vibrations to break up the plaque and create a pathway, facilitating subsequent balloon angioplasty and stent implantation.

[0004] In a conventional power ultrasonic transducer, a guide wire is inserted into a socket at the end of a horn, and a nut is then sleeved on the end of the horn to fix the guide wire.

[0005] However, the existing power ultrasonic transducer has a problem that during long-term use, the device's energy output is large at a momentary moment, causing the connection parts to loosen, the nut to slip, and the guidewire connection to be unstable, resulting in reduced energy transmission efficiency. Summary of the Invention

[0006] In view of the above-mentioned technical deficiencies, the purpose of the present invention is to provide a power ultrasonic transducer with a clamping function, which has the advantage of stably and efficiently transmitting ultrasonic vibrations to an external guide wire connected to a transformer, so as to act on the target area through the guide wire head.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions: The present invention provides a power ultrasonic transducer with a clamping function, comprising a rear end cover and a horn located on one side of the rear end cover, and the power ultrasonic transducer further comprises: The connection assembly includes a pre-tightening bolt, a screw hole is formed at one end of the horn, one end of the pre-tightening bolt passes through the rear end cover, the first electrode sheet, the first piezoelectric ceramic sheet, the second electrode sheet, and the second piezoelectric ceramic sheet in sequence, and one end of the horn passes through the second piezoelectric ceramic sheet and enters the screw hole of the horn and is threadedly fixed to the horn; The conical clamping structure includes a conical connecting block arranged at the other end of the amplitude rod and coaxially arranged with the amplitude rod. A guide wire connection hole is provided on the conical connecting block. A groove connected to the guide wire connection hole is also provided on the conical connecting block. The groove extends to the end of the amplitude rod. An external thread groove is provided on the outer wall of the conical connecting block. A clamping nut that cooperates with the external thread groove is provided on the outer sleeve of the conical connecting block.

[0008] By adopting the above technical solution, the pre-tightening bolt, the rear end cover, the first electrode sheet, the first piezoelectric ceramic sheet, the second electrode sheet, the second piezoelectric ceramic sheet, the amplitude rod, the tapered connecting block, and the clamping nut are coaxially arranged from left to right, and the overall structure is axially symmetrical. The pre-tightening bolt passes through the rear end cover, the first electrode sheet, the first piezoelectric ceramic sheet, the second electrode sheet, and the second piezoelectric ceramic sheet in sequence, and enters the screw hole of the amplitude rod and is fixed to the amplitude rod through the screw thread. There is a radial gap between the screw section and the inner hole of each component, forming a non-contact axial prestressing structure, so that the rear end cover, the first electrode sheet, the first piezoelectric ceramic sheet, the second electrode sheet, the second piezoelectric ceramic sheet, and the amplitude rod are tightly fixed, reducing The invention reduces mechanical loss and prevents the first piezoelectric ceramic sheet and the second piezoelectric ceramic sheet from being broken due to uneven force during vibration, thereby ensuring that energy is radiated from the rear surface of the transducer to a minimum and improving the forward radiation power of the transducer. The guide wire is inserted into the guide wire connection hole, and the conical connection block is conveniently retracted inwardly through the groove. The clamping nut is fixed to the conical connection block through the thread so that the conical connection block is tightened and the guide wire is clamped. The ultrasonic vibration can be stably and efficiently transmitted to the external guide wire connected to the amplitude transformer, and acts on the target area through the guide wire head end, thereby reducing the possibility of transducer slippage leading to unstable connection between the amplitude transformer and the guide wire, resulting in reduced energy transmission efficiency and abnormal equipment vibration, thereby improving the safety of the device.

[0009] Preferably, the rear end cover is a hollow cylinder, and a countersunk hole adapted for the pre-tightening bolt is formed at one end of the rear end cover away from the first electrode sheet. The rear end cover, the first piezoelectric ceramic sheet and the second piezoelectric ceramic sheet have the same outer diameter.

[0010] Preferably, the first electrode sheet and the second electrode sheet are brass sheets with a thickness of 0.1-0.3 mm, and radial dimensions of the first electrode sheet and the second electrode sheet are adapted to those of the first piezoelectric ceramic sheet and the second piezoelectric ceramic sheet.

[0011] Preferably, the transition section of the horn has a catenary profile and a total length of one quarter of the ultrasonic wavelength.

[0012] Preferably, a fixing flange coaxially arranged with the amplitude variable rod is integrated at one end of the large outer diameter of the circumferential outer wall of the amplitude variable rod, and a connecting flange for connecting to the fixing flange is provided outside the fixing flange. A connecting groove for the amplitude variable rod to pass through is provided at one end of the connecting flange, and an assembly groove connected to the connecting groove is provided at the other end. The diameter of the assembly groove is larger than the diameter of the connecting groove. The connecting groove, the assembly groove and the connecting flange are coaxially arranged, and an assembly component detachably fixedly connected to the fixing flange is provided in the assembly groove.

[0013] Preferably, the assembly component includes a rubber annular sleeve that is sleeved outside the amplitude transformer and fits against the outer wall of the amplitude transformer. Rubber annular sheets that are sleeved outside the amplitude transformer are fixed to the upper and lower ends of the rubber annular sleeve. The rubber annular sheet located on the upper side is in contact with the lower surface of the fixed flange, and the rubber annular sheet located on the lower side is in contact with the bottom of the assembly groove. A metal annular block is fixed between the two rubber annular sheets and is nested outside the rubber annular sleeve and fixed to the rubber annular sleeve.

[0014] Preferably, the metal ring block is provided with a locking assembly that cooperates with the assembly groove to fix the metal ring block and the connecting flange.

[0015] Preferably, the locking assembly includes inclined slides evenly arranged on the circumferential outer wall of the metal ring block, each inclined slide is slidably connected to a slider, the slider is provided with an inclined surface that cooperates with the inclined slide facing the inclined slide, each inclined slide is provided with a slide groove with a T-shaped cross-section, a T-shaped moving block is slidably connected in the slide groove, one end of the T-shaped moving block extends out of the slide groove, the end of the T-shaped moving block extending out of the slide groove is fixed to the slider, one end of the slider extends out of the inclined slide, and the end of the slider extending out of the inclined slide is fixed with an arc-shaped rubber block, and a combination of the said arc-shaped rubber blocks forms an annular structure.

[0016] Preferably, a control assembly for controlling the movement of the plurality of sliders is provided on one side of the metal ring block.

[0017] Preferably, the control component includes a spring connecting the slider and the bottom end of the inclined slide, and each slider is fixed with a long axis at one end away from the spring. A plurality of waist-shaped holes are opened on the rubber ring sheet near the long axis, and the long axis passes through the rubber ring sheet through adjacent waist-shaped holes and is slidably connected to the rubber ring sheet.

[0018] The beneficial effects of the present invention are as follows: the pre-tightening bolt, the rear end cover, the first electrode sheet, the first piezoelectric ceramic sheet, the second electrode sheet, the second piezoelectric ceramic sheet, the amplitude rod, the tapered connecting block, and the clamping nut are coaxially arranged from left to right, and the overall structure is axially symmetrical. The pre-tightening bolt passes through the rear end cover, the first electrode sheet, the first piezoelectric ceramic sheet, the second electrode sheet, and the second piezoelectric ceramic sheet in sequence, and enters the screw hole of the amplitude rod and is fixed to the amplitude rod through the screw thread. There is a radial gap between the screw section and the inner hole of each component, forming a non-contact axial prestressing structure, so that the rear end cover, the first electrode sheet, the first piezoelectric ceramic sheet, the second electrode sheet, the second piezoelectric ceramic sheet, and the amplitude rod are tightly fixed, reducing The invention reduces mechanical loss and prevents the first piezoelectric ceramic sheet and the second piezoelectric ceramic sheet from being broken due to uneven force during vibration, thereby ensuring that energy is radiated from the rear surface of the transducer to a minimum and improving the forward radiation power of the transducer. The guide wire is inserted into the guide wire connection hole, and the conical connection block is conveniently retracted inwardly through the groove. The clamping nut is fixed to the conical connection block through the thread so that the conical connection block is tightened and the guide wire is clamped. The ultrasonic vibration can be stably and efficiently transmitted to the external guide wire connected to the amplitude transformer, and acts on the target area through the guide wire head end, thereby reducing the possibility of transducer slippage leading to unstable connection between the amplitude transformer and the guide wire, resulting in reduced energy transmission efficiency and abnormal equipment vibration, thereby improving the safety of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 Schematic diagram of the overall structure of this embodiment; Figure 2 This is a schematic diagram showing the structure of the connection slot in this embodiment; Figure 3 This is a schematic diagram showing the structure of the horn in this embodiment; Figure 4 is a schematic structural diagram of a cross-section of the horn of this embodiment; Figure 5 This is a schematic structural diagram of the first piezoelectric ceramic sheet according to the present embodiment; Figure 6 For this embodiment Figure 5 A schematic diagram of the structure enlarged in the middle; Figure 7 This is a schematic diagram of the structure of the assembly slot in this embodiment; Figure 8This is a schematic structural diagram of a cross-section of the connecting flange of this embodiment; Figure 9 This is a schematic structural diagram of a slider according to the present embodiment; Figure 10 This is a structural diagram of the waist-shaped hole in this embodiment.

[0021] Description of reference numerals: In the figure: 1. rear end cover; 2. amplitude transformer; 3. piezoelectric ceramic crystal stack; 301. first electrode sheet; 302. first piezoelectric ceramic sheet; 303. second electrode sheet; 304. second piezoelectric ceramic sheet; 4. connecting assembly; 401. pre-tightening bolt; 402. screw hole; 403. countersunk hole; 5. conical clamping structure; 501. conical connecting block; 502. guide wire connecting hole; 503. cut groove; 504. external thread groove; 505. clamping nut; 6. fixing flange; 7. connecting flange; 701. connecting groove; 702. assembly groove; 8. assembly assembly; 801. rubber ring sleeve; 802. rubber ring sheet; 803. metal ring block; 804. inclined slide; 805. slider; 806. slide groove; 807. arc-shaped rubber block; 808. long axis; 809. waist-shaped hole. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] Example 1: Please refer to Figure 1-9 A power ultrasonic transducer with a clamping function includes a rear end cover 1, a piezoelectric ceramic crystal stack 3, and a horn 2 arranged in sequence along the axial direction. The piezoelectric ceramic crystal stack 3 includes a first electrode sheet 301, a first piezoelectric ceramic sheet 302, a second electrode sheet 303, and a second piezoelectric ceramic sheet 304 that are coaxially arranged in sequence along the axial direction and in conflict with each other.

[0024] like Figure 3 and Figure 4 and Figure 5 In order to tightly fix the rear end cover 1, the piezoelectric ceramic crystal stack 3, and the horn 2, a connecting assembly 4 is provided on the rear end cover 1. The connecting assembly 4 includes a pre-tightening bolt 401. A screw hole 402 is provided at one end of the horn 2. One end of the pre-tightening bolt 401 passes through the rear end cover 1, the first electrode sheet 301, the first piezoelectric ceramic sheet 302, the second electrode sheet 303, and the second piezoelectric ceramic sheet 304 in sequence. One end of the horn 2 passes through the second piezoelectric ceramic sheet 304 and enters the screw hole 402 of the horn 2 and is threadedly fixed to the horn 2.

[0025] like Figure 3 and Figure 4 and Figure 5 and Figure 6 To improve the stability of the connection between the horn 2 and the guidewire, a conical clamping structure 5 is provided on the horn 2. The conical clamping structure 5 includes a conical connecting block 501 disposed at the other end of the horn 2 and arranged coaxially with the horn 2. A guidewire connection hole 502 is formed on the conical connecting block 501. The guidewire connection hole 502 has a diameter of 0.5-1.5 mm and a depth of 8-12 mm, supporting rapid replacement of 0.014"-0.018" guidewires and adapting to peripheral and coronary CTO lesions. The conical connecting block 501 also has a groove 503 connected to the guidewire connection hole 502. The groove 503 is a 0.1 mm wide groove cut along the diameter of the conical connecting block 501 and extends to the end of the horn 2. An external thread groove 504 is formed on the outer wall of the conical connecting block 501, and a clamping nut 505 is provided on the outer sleeve of the conical connecting block 501 to cooperate with the external thread groove 504.

[0026] like Figure 3 and Figure 4 and Figure 5 and Figure 6 , the pre-tightening bolt 401, the rear end cover 1, the first electrode sheet 301, the first piezoelectric ceramic sheet 302, the second electrode sheet 303, the second piezoelectric ceramic sheet 304, the amplitude rod 2, the conical connecting block 501, and the clamping nut 505 are coaxially arranged from left to right, and the overall structure is axially symmetrical. The pre-tightening bolt 401 passes through the rear end cover 1, the first electrode sheet 301, the first piezoelectric ceramic sheet 302, the second electrode sheet 303, and the second piezoelectric ceramic sheet 304 in sequence, and enters the screw hole 402 of the amplitude rod 2 and is threadedly fixed to the amplitude rod 2 through the screw hole 402. There is a radial gap between the screw section and the inner hole of each component, forming a non-contact axial prestressing structure, so that the rear end cover 1, the first electrode sheet 301, the first piezoelectric ceramic sheet 302, the second electrode sheet 303, and the second piezoelectric ceramic sheet 3 04. The amplitude converter 2 is tightly fixed to reduce mechanical loss and prevent the first piezoelectric ceramic piece 302 and the second piezoelectric ceramic piece 304 from being broken due to uneven force during vibration. It can ensure that energy is radiated from the rear surface of the transducer to a minimum, thereby improving the forward radiation power of the transducer. The guide wire is inserted into the guide wire connecting hole 502, and the conical connecting block 501 is conveniently retracted inward through the groove 503. The clamping nut 505 is threadedly fixed to the conical connecting block 501 so that the conical connecting block 501 is tightened and clamped to the guide wire, which can stably and efficiently transmit ultrasonic vibration to the external guide wire connected to the amplitude converter 2, and act on the target area through the guide wire head end, thereby reducing the possibility of transducer slippage leading to unstable connection between the amplitude converter 2 and the guide wire, resulting in reduced energy transmission efficiency and abnormal equipment vibration, thereby improving the safety of the device.

[0027] like Figure 3 and Figure 4 and Figure 5 The rear end cover 1 is a hollow cylinder made of stainless steel. A countersunk hole 403 adapted to the pre-tightening bolt 401 is opened at the end of the rear end cover 1 away from the first electrode sheet 301. The rear end cover 1, the first piezoelectric ceramic sheet 302 and the second piezoelectric ceramic sheet 304 have the same outer diameter. The rear end cover 1 mainly realizes the barrier-free unidirectional radiation of the transducer to ensure that the energy is radiated from the rear surface of the transducer to a minimum. A countersunk hole 403 is provided at the end of the rear end cover 1 to accommodate the head of the pre-tightening bolt 401 to ensure structural stability and energy transmission efficiency, and facilitate the fixed connection of the rear end cover 1, the first electrode sheet 301, the first piezoelectric ceramic sheet 302, the second electrode sheet 303, the second piezoelectric ceramic sheet 304 and the amplitude transformer 2. The pre-tightening bolt 401 is made of stainless steel.

[0028] like Figure 3 and Figure 4 and Figure 5 The first electrode sheet 301 and the second electrode sheet 303 are both brass sheets with a thickness of 0.1-0.3 mm. The radial dimensions of the first electrode sheet 301 and the second electrode sheet 303 are adapted to the first piezoelectric ceramic sheet 302 and the second piezoelectric ceramic sheet 304. The first electrode sheet 301 and the second electrode sheet 303 cooperate with the first piezoelectric ceramic sheet 302 and the second piezoelectric ceramic sheet 304 to conduct electrical signals to the piezoelectric ceramic sheet and ensure uniform distribution of the electric field.

[0029] like Figure 3 and Figure 4 and Figure 5 The first piezoelectric ceramic sheet 302 and the second piezoelectric ceramic sheet 304 are formed by stacking piezoelectric ceramic rings made of PZT-8 material, with preferred dimensions of 12-16 mm in outer diameter, 5-86 mm in inner diameter, and 4-10 mm in thickness. They are stacked in a manner of connecting with the same poles and connected in mechanical series and circuit parallel, so that the transducer can efficiently convert electrical signals into mechanical vibrations and can generate high-frequency mechanical vibrations under the action of high-frequency alternating current signals. The first piezoelectric ceramic sheet 302 and the second piezoelectric ceramic sheet 304 are connected to the power supply through the wires on the first electrode sheet 301 and the second electrode sheet 303, and generate a high-frequency excitation signal in the power-on state, which is converted into mechanical vibration and transmitted to the front end of the guide wire along the amplitude rod 2.

[0030] like Figure 3 and Figure 4 and Figure 5The horn 2 is made of stainless steel. Its transition section has a catenary profile, with a total length of one-quarter of the ultrasonic wavelength. This catenary-shaped horn 2 incorporates a dual-quarter-wavelength resonant design, resulting in an amplitude output efficiency of ≥85%. Horn 2 amplifies the mechanical amplitude and efficiently transmits ultrasonic vibrations to the guidewire. Compared to stepped, exponential, and tapered structures, the catenary profile significantly reduces stress concentration and increases vibration amplitude while maintaining a large vibration displacement.

[0031] like Figure 3 and Figure 4 and Figure 5 The end with the large outer diameter of the circumferential outer wall of the amplitude transformer 2 is integrated with a fixing flange 6 arranged coaxially with the amplitude transformer 2. The fixing flange 6 is located at the nodal position of the transducer, dividing the transducer into two quarter-wavelength oscillators. The operating frequency of the transducer is 20-35 kHz, and the operating voltage is 300~3000Vpp; the working mode of the transducer is optional, which can be a continuous excitation working mode or a pulse excitation mode. The duty cycle of the excitation signal is 5%~95%, and the voltage amplitude and signal duty cycle can be adjusted according to different needs.

[0032] like Figure 1 and Figure 2 and Figure 7 and Figure 8 The outer sleeve of the fixed flange 6 is provided with a connecting flange 7 for connecting to the fixed flange 6. The connecting flange 7 is sleeved on the outside of the fixed flange 6 and fixed to the external shell or bracket. This is an existing device, so it will not be described in detail here. One end of the connecting flange 7 is provided with a connecting groove 701 for the amplitude rod 2 to pass through, and the other end is provided with an assembly groove 702 connected to the connecting groove 701. The diameter of the assembly groove 702 is larger than the diameter of the connecting groove 701. The connecting groove 701, the assembly groove 702 and the connecting flange 7 are coaxially arranged, and an assembly component 8 that is detachably fixed to the fixed flange 6 is provided in the assembly groove 702.

[0033] like Figure 1 and Figure 2 and Figure 7 and Figure 8 The assembly component 8 is connected and fixed to the horn 2, and the horn 2 passes through the assembly groove 702 and the connecting groove 701 in sequence until the assembly component 8 contacts the fixed flange 6. The assembly component 8 and the fixed flange 6 cooperate to support the horn 2. The fixed flange 6 and the connecting flange 7 are connected through the assembly component 8 to facilitate the installation of the horn 2.

[0034] like Figure 7 and Figure 8 and Figure 9The assembly component 8 includes a rubber annular sheath 801 that is sleeved on the outside of the horn 2 and fits against the outer wall of the horn 2. Rubber annular sheets 802 that are sleeved on the outside of the horn 2 are fixed to the upper and lower ends of the rubber annular sheath 801. The rubber annular sheet 802 located on the upper side contacts the lower surface of the fixing flange 6, and the rubber annular sheet 802 located on the lower side contacts the bottom of the assembly groove 702. A metal annular block 803 that is nested outside the rubber annular sheath 801 and fixed to the rubber annular sheath 801 is fixed between the two rubber annular sheets 802. The width of the rubber annular sheath 801 is slightly larger than that of the metal annular block 803. The rubber annular sheath 801, the two rubber annular sheets 802 and the metal annular block 803 are an integrated structure and are nested outside the horn 2. The horn 2 does not contact the metal, thereby reducing the possibility of wave leakage from the horn 2.

[0035] like Figure 7 and Figure 8 and Figure 9 The metal ring block 803 is provided with a locking assembly that cooperates with the assembly groove 702 to fix the metal ring block 803 and the connecting flange 7. By providing the locking assembly, the metal ring block 803 and the connecting flange 7 can be detachably fixedly connected, thereby improving the stability of the connection and further reducing the possibility of wave leakage due to contact between the horn 2 and the metal.

[0036] like Figure 7 and Figure 8 and Figure 9 The locking assembly includes an inclined slide 804 evenly arranged on the outer wall of the circumference of the metal ring block 803, and each inclined slide 804 is slidably connected with a slider 805. The slider 805 is provided with an inclined surface that cooperates with the inclined slide 804 on the side facing the inclined slide 804. Each inclined slide 804 is provided with a slide groove 806 with a T-shaped cross-section, and a T-shaped moving block is slidably connected in the slide groove 806. One end of the T-shaped moving block extends out of the slide groove 806, and the end of the T-shaped moving block extending out of the slide groove 806 is fixed to the slider 805. One end of the slider 805 extends out of the inclined slide 804, and the end of the slider 805 extending out of the inclined slide 804 is fixed with an arc-shaped rubber block 807. Several of the arc-shaped rubber blocks 807 are combined to form a ring structure.

[0037] During installation, the horn 2 is always kept in a vertical state. The staff will nest the rubber annular sheath 801, two rubber annular sheets 802 and metal annular block 803 of the integrated structure outside the horn 2 and fix it to the horn 2. At this time, the horn 2 does not contact the metal annular block 803, reducing the possibility of wave leakage, and the rubber annular sheet 802 at the upper position conflicts with the lower surface of the fixing flange 6. Then the horn 2 is passed through the assembly groove 702 and the connecting groove 701 from top to bottom. The inner diameter of the connecting groove 701 is larger than the outer diameter of the horn 2, and the inner diameter of the assembly groove 702 is larger than the width of the rubber annular sheet 802, until the rubber annular sheet 802 at the lower side conflicts with the bottom of the assembly groove 702. In the initial state, the slider 805 is located at the bottom end of the inclined slide 804 under the action of gravity. At this time, the outer diameter of the annular structure formed by the combination of several arc-shaped rubber blocks 807 is larger than the inner diameter of the assembly groove 702. When the metal ring block 803 is vertically inserted into the assembly groove 702, the connecting flange 7 will push the arc-shaped rubber block 807 to move upward, driving the slider 805 to move upward on the inclined slide 804. The arc-shaped rubber block 807 moves toward the center of the circle while moving upward until the arc-shaped rubber block 807 can enter the assembly groove 702. When the rubber ring piece 802 on the lower side conflicts with the bottom of the assembly groove 702, the several arc-shaped rubber blocks 807 are all in the appropriate position and conflict with the wall of the assembly groove 702, supporting the horn 2 while ensuring that the outer wall of the horn 2 does not contact the connecting flange 7, further reducing the possibility of wave leakage of the horn 2.

[0038] Example 2: Please refer to Figure 10 When the horn 2 is not always in a vertical state, a control component for controlling the movement of several sliders 805 is provided on one side of the metal ring block 803. The control component includes a spring connecting the slider 805 and the bottom end of the inclined slide 804. A long axis 808 is fixed to the end of each slider 805 away from the spring. Several waist-shaped holes 809 are opened on the rubber ring piece 802 near the long axis 808. The long axis 808 passes through the rubber ring piece 802 through adjacent waist-shaped holes 809 and is slidably connected to the rubber ring piece 802.

[0039] like Figure 10 When the horn 2 is not always in a vertical position, the spring provides elastic potential energy to control the movement of the slider 805 on the inclined slide 804. The assembly groove 702 pushes the slider 805 to move, and the spring is stretched. When the horn 2 needs to be removed, the long shaft 808 is manually moved. The long shaft 808 slides in the waist-shaped hole 809, facilitating the removal of the metal ring block 803. The structural relationship is similar to the relevant part of the embodiment, and the remaining structure is as described above. The working principle of embodiment 2 is similar to the relevant part of embodiment 1.

[0040] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A power ultrasonic transducer with a clamping function, comprising a rear end cover (1) and a horn (2) located on one side of the rear end cover (1), characterized in that: Power ultrasonic transducers also include: A piezoelectric ceramic crystal stack (3) comprises a first electrode sheet (301), a first piezoelectric ceramic sheet (302), a second electrode sheet (303), and a second piezoelectric ceramic sheet (304) which are coaxially arranged in sequence along the axial direction and in conflict with each other; A connecting assembly (4) includes a pre-tightening bolt (401), one end of the amplitude rod (2) is provided with a screw hole (402), one end of the pre-tightening bolt (401) sequentially passes through the rear end cover (1), the first electrode sheet (301), the first piezoelectric ceramic sheet (302), the second electrode sheet (303), and the second piezoelectric ceramic sheet (304), and one end of the amplitude rod (2) passes through the second piezoelectric ceramic sheet (304) and enters the screw hole (402) of the amplitude rod (2) and is threadedly fixed to the amplitude rod (2); The conical clamping structure (5) comprises a conical connecting block (501) provided at the other end of the amplitude transformer (2) and coaxially arranged with the amplitude transformer (2), the conical connecting block (501) being provided with a guide wire connecting hole (502), the conical connecting block (501) being further provided with a groove (503) communicating with the guide wire connecting hole (502), the groove (503) extending to the end of the amplitude transformer (2), the outer wall of the conical connecting block (501) being provided with an external thread groove (504), and the outer sleeve of the conical connecting block (501) being provided with a clamping nut (505) cooperating with the external thread groove (504).

2. The power ultrasonic transducer with a clamping function according to claim 1, characterized in that: The rear end cover (1) is a hollow cylinder. A countersunk hole (403) adapted to the pre-tightening bolt (401) is provided at one end of the rear end cover (1) away from the first electrode sheet (301). The rear end cover (1), the first piezoelectric ceramic sheet (302), and the second piezoelectric ceramic sheet (304) have the same outer diameter.

3. The power ultrasonic transducer with a clamping function according to claim 1, characterized in that: The first electrode sheet (301) and the second electrode sheet (303) are both brass sheets with a thickness of 0.1-0.3 mm, and the radial dimensions of the first electrode sheet (301) and the second electrode sheet (303) are adapted to the first piezoelectric ceramic sheet (302) and the second piezoelectric ceramic sheet (304).

4. The power ultrasonic transducer with a clamping function according to claim 1, characterized in that: The transition section of the horn (2) is a catenary-shaped profile, and the total length is one quarter of the ultrasonic wavelength.

5. The power ultrasonic transducer with a clamping function according to claim 1, characterized in that: A fixed flange (6) coaxially arranged with the horn (2) is integrated at one end of the circumferential outer wall of the horn (2), and the fixed flange (6) is provided with a connecting flange (7) for connecting with the fixed flange (6). A connecting groove (701) for the horn (2) to pass through is provided at one end of the connecting flange (7), and an assembly groove (702) communicating with the connecting groove (701) is provided at the other end. The diameter of the assembly groove (702) is larger than the diameter of the connecting groove (701). The connecting groove (701), the assembly groove (702) and the connecting flange (7) are coaxially arranged. An assembly component (8) detachably fixedly connected to the fixed flange (6) is provided in the assembly groove (702).

6. The power ultrasonic transducer with a clamping function as claimed in claim 5, characterized in that: The assembly component (8) includes a rubber annular sleeve (801) sleeved outside the amplitude transformer (2) and in contact with the outer wall of the amplitude transformer (2), and the upper and lower ends of the rubber annular sleeve (801) are fixed with rubber annular sheets (802) sleeved outside the amplitude transformer (2), the rubber annular sheet (802) located on the upper side abuts against the lower surface of the fixed flange (6), and the rubber annular sheet (802) located on the lower side abuts against the bottom of the assembly groove (702), and a metal annular block (803) is fixed between the two rubber annular sheets (802) and is nested outside the rubber annular sleeve (801) and fixed to the rubber annular sleeve (801).

7. The power ultrasonic transducer with a clamping function according to claim 6, characterized in that: The metal annular block (803) is provided with a locking assembly that cooperates with the assembly groove (702) to fix the metal annular block (803) and the connecting flange (7).

8. The power ultrasonic transducer with a clamping function according to claim 7, characterized in that: The locking assembly comprises inclined slideways (804) uniformly arranged on the outer circumferential wall of the metal ring block (803), each inclined slideway (804) being slidably connected to a slider (805), and the slider (805) is provided with an inclined surface cooperating with the inclined slideway (804) on one side facing the inclined slideway (804); Each inclined slideway (804) is provided with a slide groove (806) with a T-shaped cross section, a T-shaped moving block is slidably connected in the slide groove (806), one end of the T-shaped moving block extends out of the slide groove (806), one end of the T-shaped moving block extending out of the slide groove (806) is fixed to the slider (805), one end of the slider (805) extends out of the inclined slideway (804), and one end of the slider (805) extending out of the inclined slideway (804) is fixed with an arc-shaped rubber block (807), and a plurality of the arc-shaped rubber blocks (807) are combined to form a ring structure.

9. The power ultrasonic transducer with a clamping function according to claim 1, characterized in that: A control assembly for controlling the movement of a plurality of sliders (805) is provided on one side of the metal ring block (803).

10. The power ultrasonic transducer with a clamping function according to claim 9, characterized in that: The control component includes a spring connecting a slider (805) and the bottom end of the inclined slide (804), and a long axis (808) is fixed to one end of each slider (805) away from the spring. A plurality of waist-shaped holes (809) are opened on the rubber ring sheet (802) near the long axis (808), and the long axis (808) passes through the rubber ring sheet (802) through adjacent waist-shaped holes (809) and is slidably connected to the rubber ring sheet (802).

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