A rotatable ultrasonic vibration device

Abstract

The present application discloses a rotatable ultrasonic vibration device. The ultrasonic vibration device includes: a housing; a hollow locking rod having a center hole; a piezoelectric transducer arranged around the hollow locking rod; a first amplitude rod installed in the center hole, one end of the first amplitude rod being fixedly connected to the hollow locking rod, and at least part of the length of the first amplitude rod being located in the space surrounded by the piezoelectric transducer; an instrument rod connected to the other end of the first amplitude rod, the instrument working part being located outside the housing and connected to the instrument rod, and the instrument rod being rotatable relative to the first amplitude rod; a rotary transmission assembly, the rotary transmission assembly being rotatably mounted on the housing, and the rotary transmission assembly cooperating with the instrument rod to transmit rotational torque to the instrument rod. The ultrasonic vibration device according to the embodiment of the present application is conducive to significantly reducing the axial length of the ultrasonic vibration device, saving space, and facilitating miniaturized design, and the instrument working part combines the dual power of vibration and rotation, has strong working performance, and improves energy utilization.

Description

Technical Field

[0001] The present application belongs to the field of oral medical equipment, and in particular relates to a rotatable ultrasonic vibration device. Background Art

[0002] The vibrating rotating structures on traditional medical device handles use pneumatic, electromagnetic, mechanical and other methods as vibration driving power, and the vibration frequency generated is relatively low. As a medical device, the recipient feels poor and affects the treatment effect. Summary of the Invention

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a rotatable ultrasonic vibration device that improves the treatment effect by enhancing the vibration capacity.

[0004] According to the embodiment of the present application, the rotatable ultrasonic vibration device includes: a shell, a mounting cavity is provided in the shell, a handle connecting portion is provided on the shell, and a mounting hole connected to the mounting cavity is provided on the shell; a hollow locking rod, the hollow locking rod is installed in the mounting cavity, one end of the hollow locking rod is opposite to the mounting hole in the length direction, and the hollow locking rod has a center hole arranged along the length direction; a piezoelectric transducer, the piezoelectric transducer is installed in the mounting cavity, the piezoelectric transducer is arranged around the hollow locking rod, and the hollow locking rod fixes the piezoelectric transducer in the shell; a first amplitude rod , the first amplitude variable rod is installed in the center hole, one end of the first amplitude variable rod is fixedly connected to the hollow locking rod in the length direction, and at least part of the length section of the first amplitude variable rod is located in the space surrounded by the piezoelectric transducer; an instrument rod, the instrument rod is directly or indirectly connected to the other end of the first amplitude variable rod in the length direction, the instrument working part is located outside the shell and connected to the instrument rod, and the instrument rod is rotatable relative to the first amplitude variable rod; a rotation transmission assembly, the rotation transmission assembly is rotatably mounted on the shell, and the rotation transmission assembly cooperates with the instrument rod to transmit rotational torque to the instrument rod.

[0005] According to the ultrasonic vibration device of the embodiment of the present application, a shell is provided to carry internal parts, and a handle connection portion is provided on the shell to connect to the handle body. The weight of the shell itself and the weight carried by the handle body enable the shell to act as a mass balance block, thereby reducing the structural volume by eliminating the setting of the mass balance block. By arranging the shell, piezoelectric transducer, hollow locking rod, and first amplitude variable rod in the radial direction, it is beneficial to significantly reduce the axial length of the ultrasonic vibration device, save space, and facilitate miniaturization design. Moreover, the piezoelectric transducer is surrounded by the radial outside of the first amplitude variable rod, and the first amplitude variable rod is a hollow rod, which can make the ultrasonic energy received by the first amplitude variable rod large, so that the amplitude increased under the action of the ultrasonic wave is larger, ensuring that the working part of the instrument can vibrate strongly and improving energy utilization. The instrument rod obtains a dual power source, thereby significantly improving the vibration frequency and vibration amplitude of the working part of the instrument, which is beneficial to improving the treatment effect.

[0006] In some embodiments, the first amplitude transformer is a hollow rod; the ultrasonic vibration device also includes a second amplitude transformer, which is installed in the first amplitude transformer, and at least part of the length of the second amplitude transformer is located in the space surrounded by the piezoelectric transducer, and the second amplitude transformer is fixedly connected to the first amplitude transformer at one end in the length direction and fixedly connected to the instrument rod at the other end.

[0007] In some embodiments, the instrument rod includes: a built-in section and a step positioning section, the built-in section is arranged in the first amplitude changing rod, one end of the built-in section cooperates with the rotation transmission assembly, the step positioning section is connected to the other end of the built-in section and is located outside the first amplitude changing rod, and the instrument working part and the built-in section are located on opposite sides of the step positioning section.

[0008] The ultrasonic vibration device further includes a compression elastic member, which cooperates with the housing and the instrument rod respectively to press the step positioning section against the rod end of the first amplitude changing rod.

[0009] Specifically, the ultrasonic vibration device also includes: a pre-tightening cover, which is located outside the mounting cavity and connected to the shell, and a matching hole is provided on the pre-tightening cover, and one end of the instrument rod extends from the matching hole; the clamping elastic member is a spring, and one end of the spring stops on the pre-tightening cover and the other end stops on the step positioning section.

[0010] Furthermore, one end of the hollow locking rod extends out of the shell from the mounting hole, and the ultrasonic vibration device also includes a pressure cover, which is located outside the shell and is fastened to the hollow locking rod to clamp the piezoelectric transducer; the pre-tightening cover is threadedly connected to the pressure cover to provide a certain pre-tightening force for the piezoelectric transducer.

[0011] In some embodiments, the instrument rod further includes an instrument amplitude-changing rod segment, the instrument amplitude-changing rod segment is located outside the first amplitude-changing rod, and the instrument working portion is rigidly connected to the instrument amplitude-changing rod segment.

[0012] Specifically, a concave hole is provided at the end of the hollow locking rod, and one end of the central hole extends to the concave hole;

[0013] One end of the first amplitude changing rod is provided with a first flange which fits in the concave hole, and the first flange is rigidly connected to the hollow locking rod.

[0014] In some optional embodiments, the rotary transmission assembly includes: a first gear, the first gear being mounted on the hollow locking rod via a first support bearing;

[0015] A section of the instrument rod away from the instrument working part is a transmission section, and a transmission hole that cooperates with the transmission section is provided at the center of the first gear, and the transmission hole is a non-circular hole.

[0016] Furthermore, a receiving groove is provided on the handle connecting portion, and the ultrasonic vibration device also includes a torque input shaft; the rotation transmission assembly also includes: a second gear connected to the torque input shaft, the second gear is supported in the receiving groove through a second support bearing, and the second gear is meshed with the first gear.

[0017] Further optionally, the axes of the first gear and the second gear are perpendicular; the outer edge of the first gear is surrounded by the radial outside of the hollow locking rod, and the first support bearing is located between the outer edge of the first gear and the hollow locking rod.

[0018] In some embodiments, the rod portion of the first horn is a first type rod or a second type rod;

[0019] The rod portion of the second horn is a first type rod or a second type rod;

[0020] The amplitude changing rod section of the instrument is a first type rod or a second type rod;

[0021] Among them, the outer diameter of the first type rod decreases linearly from one end to the other end, and the shape is a straight cone; the outer diameter of the second type rod gradually increases and then decreases from one end to the other end, and the shape can be a multi-segment straight cone or a curved cone.

[0022] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0024] Figure 1 is a schematic structural diagram of an ultrasonic vibration device according to some embodiments of the present application;

[0025] Figure 2 is a schematic structural diagram of a hollow locking rod in some embodiments of the present application;

[0026] Figure 3 is a schematic structural diagram of a first horn in some embodiments of the present application;

[0027] Figure 4 is a schematic structural diagram of an instrument rod according to some embodiments of the present application;

[0028] Figure 5 yes Figure 1 A partial structural diagram of the illustrated embodiment;

[0029] Figure 6 is a schematic structural diagram of a first gear in some embodiments of the present application;

[0030] Figure 7 Schematic diagram of the cooperation relationship between the pre-tightening cover and the compression elastic member in some embodiments of the present application;

[0031] Figure 8 is a schematic structural diagram of the ultrasonic vibration device of other embodiments of the present application when some parts are omitted;

[0032] Figure 9 yes Figure 8 A schematic diagram of the assembly of the first horn and the second horn in the illustrated embodiment;

[0033] Figure 10 is a schematic diagram of the appearance of a first type of rod in some embodiments;

[0034] FIG11( a ) is a schematic diagram of the appearance of a second type of rod with multiple straight tapers in some embodiments, and FIG11( b ) is a schematic diagram of the appearance of a second type of rod with a curved taper in some embodiments.

[0035] Reference numerals:

[0036] Ultrasonic vibration device 100;

[0037] Housing 1, mounting cavity 11, mounting hole 12, handle connecting portion 13, rear opening 14, receiving slot 15;

[0038] First horn 2, first flange 23;

[0039] Instrument rod 3, built-in section 31, step positioning section 32, instrument amplitude rod section 33, transmission section 34;

[0040] Piezoelectric transducer 4;

[0041] Hollow locking rod 51, center hole 512, recessed hole 513, pressure cover 53, pre-tightening cover 55, matching hole 551, and pressing elastic member 56;

[0042] Rotating transmission assembly 6, second gear 61, first gear 62, transmission hole 621,

[0043] Torque input shaft 71, second support bearing 72, first support bearing 73,

[0044] Second horn 8, second flange 83;

[0045] A first gap a1 and a second gap a2;

[0046] A first type rod 91 and a second type rod 92;

[0047] Instrument working part 200. DETAILED DESCRIPTION

[0048] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0049] In the description of this application, it should be understood that the terms "center," "front," "back," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting this application. Unless otherwise specified, "plurality" means two or more.

[0050] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0051] The following describes a rotatable ultrasonic vibration device 100 according to an embodiment of the present application with reference to the accompanying drawings.

[0052] Reference Figure 1-Figure 4 As shown, the rotatable ultrasonic vibration device 100 according to an embodiment of the present application includes: a shell 1, a hollow locking rod 51, a first amplitude changing rod 2, an instrument rod 3, an electric transducer 4 and a rotation transmission assembly 6.

[0053] Housing 1 defines a mounting cavity 11, a handle connection portion 13, and a mounting hole 12 communicating with mounting cavity 11. A hollow locking rod 51 is mounted within mounting cavity 11, with one end of the hollow locking rod 51 facing mounting hole 12 along its length. The hollow locking rod 51 has a central hole 512 extending along its length.

[0054] The piezoelectric transducer 4 is installed in the installation cavity 11 . The piezoelectric transducer 4 is arranged around the hollow locking rod 51 . The hollow locking rod 51 fixes the piezoelectric transducer 4 in the housing 1 .

[0055] The first horn 2 is installed in the central hole 512 . One end of the first horn 2 in the length direction is fixedly connected to the hollow locking rod 51 . At least part of the length of the first horn 2 is located in the space surrounded by the piezoelectric transducer 4 .

[0056] The instrument rod 3 is directly or indirectly connected to the other end of the first amplitude rod 2 in the length direction. The instrument working part 200 is located outside the shell 1 and connected to the instrument rod 3. The instrument rod 3 is rotatable relative to the first amplitude rod 2.

[0057] The rotation transmission assembly 6 is rotatably mounted on the housing 1 , and the rotation transmission assembly 6 cooperates with the instrument rod 3 to transmit rotational torque to the instrument rod 3 .

[0058] In this application, the length direction of the hollow locking rod 51 and the first horn 2 are consistent, for example, Figure 1 In the figure, the hollow locking rod 51 and the first horn 2 are both long rods extending in the front-to-back direction. For ease of description, the following description will be based on the example where the lengths of the hollow locking rod 51 and the first horn 2 are both in the front-to-back direction. The side of the housing 1 facing the instrument working portion 200 is referred to as the front side, and the side opposite it is referred to as the rear side. When using the ultrasonic vibration device 100 for tooth cleaning, the instrument working portion 200 on the front side of the ultrasonic vibration device 100 is facing the teeth.

[0059] As is well known to those skilled in the art, the core component of the piezoelectric transducer 4 is the piezoelectric chip. The piezoelectric chip can deform under pressure, causing polarization of the chip itself and the appearance of positive and negative bound charges on the surface of the chip. This effect is known as the piezoelectric effect. The piezoelectric effect is reversible, meaning that applying a voltage to the piezoelectric chip causes deformation. This inverse piezoelectric effect can generate ultrasonic waves. How to connect and control the piezoelectric chip is well known in the prior art and will not be elaborated on here.

[0060] The first horn 2 of this application is an ultrasonic horn. As the name suggests, it is a functional component that cooperates with the transducer to change the amplitude of ultrasonic vibrations. Its main function is to change the amplitude of the piezoelectric transducer 4, increase the vibration velocity ratio, improve efficiency, and enhance the mechanical quality factor. By installing the ultrasonic horn, the transducer adjusts the load matching between the transducer and the instrument working part 200, reducing the resonant impedance, allowing it to operate at the resonant frequency, improving the electroacoustic conversion efficiency, effectively reducing the heat generated by the transducer, and extending its service life.

[0061] Therefore, when the ultrasonic vibration device 100 of the present application is in operation, a voltage is applied to the piezoelectric transducer 4, causing the piezoelectric transducer 4 to deform and vibrate, while also generating ultrasonic waves. Because the hollow locking rod 51 secures the piezoelectric transducer 4 to the housing 1, the driving power of the piezoelectric transducer 4 is output through the rear end of the hollow locking rod 51. The first horn 2, connected to the rear end of the hollow locking rod 51, further increases its amplitude under the action of ultrasonic waves, causing the instrument's working portion 200, connected to the front end of the first horn 2, to vibrate strongly, thereby improving operating performance.

[0062] In the present application, a shell 1 is provided, on which a handle connection portion 13 is provided to connect to the handle body. The weight of the shell 1 itself and the weight borne by the connection with the handle body enable the shell 1 to act as a mass balance block, thereby reducing the structural volume by eliminating the setting of the mass balance block.

[0063] The present application does not limit the shape of the first horn 2; the first horn 2 can be a round rod or a square rod. The radial and axial directions herein are defined with reference to the instrument working portion 200. The axis of the instrument working portion 200 serves as the axis of the ultrasonic vibration device 100. The direction along this axis is referred to as the axial direction, and the direction perpendicular to this axis is referred to as the radial direction.

[0064] Since the piezoelectric transducer 4 is arranged in the shell 1, the piezoelectric transducer 4 is surrounded by the radial outside of the first amplitude variable rod 2, and the first amplitude variable rod 2 is a hollow rod. The shell 1, the piezoelectric transducer 4, the hollow locking rod 51, the first amplitude variable rod 2, and the instrument rod 3 are arranged radially, rather than the linear arrangement of the mass balance block, the piezoelectric transducer and the amplitude variable rod used in the prior art. This radial arrangement method of the present application is conducive to significantly reducing the axial length of the ultrasonic vibration device 100, saving space, and facilitating miniaturization design.

[0065] It can be understood that ultrasound is a radiation wave, and the ultrasonic energy in the area surrounded by the piezoelectric transducer 4 is relatively concentrated. Therefore, in this application, by surrounding the piezoelectric transducer 4 on the radial outside of the first amplitude transformer 2, the ultrasonic energy received by the first amplitude transformer 2 can be large, so that the amplitude increased under the action of ultrasound is larger, ensuring that the working part 200 of the instrument can vibrate strongly and improving energy utilization.

[0066] First horn 2 is a hollow rod with a thin wall, allowing ultrasound to easily penetrate. Furthermore, its reduced cross-sectional area makes it more susceptible to vibration when subjected to ultrasound, thereby increasing the vibration amplitude. This tube-and-sleeve arrangement reduces the bending amplitude of instrument rod 3 during vibration, preventing excessive deformation at the connection between first horn 2 and instrument rod 3, which could lead to separation, thereby improving connection reliability.

[0067] exist Figure 1 In some of the illustrated embodiments, a mounting cavity 11 is provided within the housing 1, and a mounting hole 12 is provided on the front side of the housing 1. The rear end of the mounting hole 12 communicates with the mounting cavity 11, so that the first horn 2, the hollow locking rod 51, and the piezoelectric transducer 4 can all be disposed within the mounting cavity 11. Optionally, the rear side of the mounting cavity 11 is open, that is, a rear opening 14 is provided on the rear side of the housing 1 to facilitate assembly of components such as the first horn 2, the hollow locking rod 51, and the piezoelectric transducer 4.

[0068] In the present application, the rear end of the first amplitude variable rod 2 is connected to the rear end of the hollow locking rod 51, and the front end of the first amplitude variable rod 2 is connected to the instrument working part 200. This reverse arrangement of the first amplitude variable rod 2 is not only conducive to shortening the overall axial length of the ultrasonic vibration device 100, but also the piezoelectric transducer 4, the hollow locking rod 51, the first amplitude variable rod 2, and the instrument working part 200 The vibration can be transmitted in sequence, and there is no interference with each other when arranged, thereby realizing a compact and miniaturized arrangement of parts.

[0069] In the present application, a rotary transmission assembly 6 is provided, which cooperates with the rear end of the instrument rod 3 to transmit rotational torque to the instrument rod 3. The arrangement of the rotary transmission assembly 6 does not affect the arrangement of the instrument working part 200. The instrument rod 3 obtains a dual power source, thereby greatly improving the vibration frequency and vibration amplitude of the instrument rod 3, which is beneficial to improving the treatment effect.

[0070] In some embodiments, the piezoelectric transducer 4 may include multiple layers of piezoelectric wafers, each layer of which is arranged in a circular (or other annular) shape around the first horn 2, and the multiple layers of piezoelectric wafers are stacked axially. Specifically, the piezoelectric wafers in each layer may be formed in a circular (or other annular) shape, or may include multiple block-shaped piezoelectric wafers sequentially spliced ​​into a circular (or other annular) shape, without limitation.

[0071] In some embodiments, as Figure 1 and Figure 5 As shown, the instrument rod 3 includes: a built-in section 31 and a step positioning section 32. The built-in section 31 is arranged in the first amplitude rod 2. One end of the built-in section 31 cooperates with the rotation transmission assembly 6. The step positioning section 32 is connected to the other end of the built-in section 31 and is located outside the first amplitude rod 2. The step positioning section 32 abuts on the rod end of the first amplitude rod 2. The instrument working part 200 and the built-in section 31 are located on opposite sides of the step positioning section 32.

[0072] like Figure 2 In the embodiment, the internal section 31 is disposed within the first horn 2 along the front-to-back direction. The rear end of the internal section 31 engages with the rotational transmission assembly 6. The stepped positioning section 32 connects to the front end of the internal section 31 and is located in front of the first horn 2. The provision of the stepped positioning section 32 facilitates positioning, increases the contact area between the instrument rod 3 and the first horn 2, and improves the axial load-bearing capacity of the first horn 2 on the instrument rod 3.

[0073] Specifically, if Figure 1 and Figure 7 As shown, the ultrasonic vibration device 100 further includes a compression elastic member 56, which cooperates with the housing 1 and the instrument rod 3, respectively, to press the stepped positioning section 32 against the rod end of the first horn 2. This ensures that the stepped positioning section 32 is in close contact with the rod end of the first horn 2, so that when the first horn 2 vibrates or deforms, it can effectively act on the instrument rod 3, thereby driving the instrument rod 3 to vibrate.

[0074] Specifically, if Figure 1 、 Figure 6 and Figure 7 As shown, the ultrasonic vibration device 100 further includes a pre-tightening cover 55, which is located outside the installation cavity 11 and connected to the housing 1. Figure 1 The middle pre-tightening cover 55 is provided on the front side of the housing 1 .

[0075] The preload cover 55 is provided with a mating hole 551, through which one end of the instrument rod 3 extends. The compression elastic member 56 is a spring, one end of which abuts against the preload cover 55 and the other end against the stepped positioning section 32. This arrangement greatly facilitates assembly and provides a durable spring, further extending its service life.

[0076] Furthermore, if Figure 1 、 Figure 6 and Figure 7 As shown, one end of the hollow locking rod 51 extends out of the housing 1 from the mounting hole 12 . The ultrasonic vibration device 100 further includes a pressure cover 53 . The pressure cover 53 is located outside the housing 1 and is connected to the hollow locking rod 51 to clamp the piezoelectric transducer 4 .

[0077] like Figure 1 In the embodiment, the pressure cover 53 is arranged on the front side of the housing 1 and surrounds the mounting hole 12 .

[0078] Optionally, the pre-tightening cover 55 is threadedly connected to the pressure cover 53. Such an arrangement is not only easy to assemble, but also convenient for disassembly of the pre-tightening cover 55, and convenient for subsequent maintenance and overhaul.

[0079] Of course, the setting of the instrument rod 3 in the present application is not limited to spring support. A bearing (such as a thrust bearing) can also be set between the first amplitude variable rod 2 and the instrument rod 3 to transmit the vibration of the first amplitude variable rod 2 to the instrument rod 3.

[0080] In some embodiments, the instrument rod 3 further includes an instrument amplitude changer section 33, which is located outside the first amplitude changer 2, for example, Figure 1 The middle instrument horn segment 33 is located in front of the first horn 2, and the instrument working portion 200 is rigidly connected to the front end of the instrument horn segment 33. As a result, the instrument horn segment 33 has an amplitude-varying function, which can further amplify the vibration amplitude of the instrument working portion 200, thereby improving the working efficiency of the instrument working portion 200.

[0081] Specifically, the instrument horn section 33 is a tapered rod. Further, the instrument horn section 33 is inserted into the matching hole 551 of the pre-tightening cover 55 .

[0082] Specifically, if Figure 1 As shown, the internal segment 31 is coaxially arranged with the first horn 2, with a first gap a1 defined between the outer surface of the internal segment 31 and the inner surface of the first horn 2. This arrangement provides a relatively uniform thickness of the first gap a1 around the periphery of the internal segment 31, allowing the internal segment 31 to flex in all 360 degrees.

[0083] In some specific embodiments, Figure 1 and Figure 2As shown, a recessed hole 513 is provided at the end of the hollow locking rod 51, and one end of the central hole 512 extends into the recessed hole 513. A first flange 23 is provided at one end of the first horn 2, which fits within the recessed hole 513. The first flange 23 is rigidly connected to the hollow locking rod 51. The mating of the first flange 23 and the recessed hole 513 to connect the first horn 2 and the hollow locking rod 51 not only increases the contact area between the two, but also allows for axial and radial position limiting between them, thereby enhancing the connection's strength and reliability and facilitating vibration transmission.

[0084] Furthermore, if Figure 1 As shown, there is a second gap a2 between the outer surface of the first amplitude variable rod 2 and the inner surface of the hollow locking rod 51. The setting of the second gap a2 allows the first amplitude variable rod 2 and the hollow locking rod 51 to be completely separated except for the rear end. In this way, the two interfere with each other during vibration and deformation, and the friction is small, thereby reducing friction loss.

[0085] Furthermore, if Figure 1 As shown, the ultrasonic vibration device 100 further includes: a gland 53 , one end of the hollow locking rod 51 extends out of the housing 1 from the mounting hole 12 , the gland 53 is located outside the housing 1 and connected to the hollow locking rod 51 to clamp the piezoelectric transducer 4 .

[0086] like Figure 1 In the embodiment, the gland 53 is arranged on the front side of the housing 1 and surrounds the mounting hole 12, and the front end of the hollow locking rod 51 is connected to the gland 53. In other words, the gland 53 blocks the front side of the piezoelectric transducer 4, and the hollow locking rod 51 blocks the rear side of the piezoelectric transducer 4. The hollow locking rod 51 is passed through the mounting hole 12 of the housing 1, so that the piezoelectric transducer 4 is locked in the housing 1 through the hollow locking rod 51 and the gland 53, thereby improving the fixation and protection of the piezoelectric transducer 4.

[0087] In some optional embodiments, the rotation transmission assembly 6 includes: a first gear 62, and the first gear 62 is arranged on the hollow locking rod 51 through a first support bearing 73. Figure 4 As shown, the rear end of the instrument rod 3 is a transmission section 34. Figure 6 As shown, a transmission hole 621 that cooperates with the transmission section 34 is provided at the center of the first gear 62, and the transmission hole 621 is a non-circular hole.

[0088] By providing the first gear 62, external power can transmit torque to the instrument rod 3 through gear transmission, with high transmission efficiency, and the transmission ratio can be adjusted using the gear ratio.

[0089] Specifically, the handle connection portion 13 is provided with a receiving groove 15. The ultrasonic vibration device 100 further includes a torque input shaft 71. The second gear 61 is supported in the receiving groove 15 via a second support bearing 72. The rotation transmission assembly 6 further includes a second gear 61 connected to the torque input shaft 71, and the second gear 61 is meshed with the first gear 62.

[0090] The torque input shaft 71 and the second gear 61 facilitate adjustment of the torque transmission direction. The power source of the rotary transmission assembly 6 can be disposed within the handle body. When the handle connection portion 13 is connected to the handle body, the power source on the handle transmits the torque via the torque input shaft 71 and the second gear 61 to the instrument rod 3 via the first gear 62.

[0091] The purpose of such a setting is to fully utilize the space of the handle connecting portion 13 to arrange the rotary transmission assembly 6, which is conducive to the miniaturization design of the device.

[0092] Further optionally, the axes of the first gear 62 and the second gear 61 are perpendicular, the outer edge of the first gear 62 is surrounded by the radial outside of the hollow locking rod 51, and the first support bearing 73 is located between the outer edge of the first gear 62 and the hollow locking rod 51.

[0093] In summary, if Figure 1 In the ultrasonic vibration device 100 shown, the piezoelectric transducer 4 is locked in the housing 1 by a hollow locking rod 51 and a pressure cover 53. Since the housing 1 is connected to the handle body via the handle connecting portion 13, the housing 1 has a large mass and can act as a mass balance block.

[0094] During operation, when the piezoelectric transducer 4 is excited, strong vibrations are generated at the rear end of the hollow locking rod 51. Furthermore, since the hollow first horn 2 is tightly and rigidly connected to the recessed hole 513 on the hollow locking rod 51 via the first flange 23, the first horn 2 can be driven to vibrate together.

[0095] During use, the instrument rod 3 is installed in the hollow first horn 2 and locked by the locking nut 52, so that the stepped positioning section 32 of the instrument rod 3 is tightly connected to the front end of the first horn 2. When the first horn 2 vibrates, the instrument rod 3 is driven to vibrate together.

[0096] Since the front end of the step positioning section 32 on the instrument rod 3 is connected to the instrument amplitude section 33, the vibration of the instrument working part 200 connected in front of the instrument rod 3 is further enhanced. The instrument rod 3 and the instrument working part 200 are rigidly connected.

[0097] The rotary transmission assembly 6 drives the instrument rod 3 to rotate, so that the instrument working part 200 performs a dual motion form of rotation and vibration, thereby improving the therapeutic ability.

[0098] In the present application, the first horn 2 may not be limited to Figure 1 The hollow rod shown, the first horn 2 can also be a solid rod.

[0099] In the present application, the first amplitude-changing rod 2 can be directly connected to the instrument rod 3 , or can be indirectly connected to the instrument rod 3 through the second amplitude-changing rod 8 .

[0100] In some embodiments, Figure 8 and Figure 9 As shown, the first horn 2 is a hollow rod, and the second horn 8 is installed inside the first horn 2, with at least part of the length of the second horn 8 located in the space surrounded by the piezoelectric transducer 4. The instrument rod 3 is connected to the first horn 2 via the second horn 8. The provision of the second horn 8 can further increase the amplitude.

[0101] In the present application, the second horn 8 is one. The second horn 8 can be a solid rod or a hollow rod, and the second horn 8 is rigidly connected to the first horn 2 and the instrument rod 3 at both ends in the length direction.

[0102] Specifically, the second horn 8 is provided with a second flange 83 at one end in the longitudinal direction, and the second flange 83 is rigidly connected to the end of the first horn 2. The second horn 8 is connected using the second flange 83, which not only increases the contact area but also allows for axial and radial position limiting of the second horn 8, thereby improving the connection strength and reliability and facilitating vibration transmission.

[0103] Specifically, the materials of the first horn 2 , the second horn 8 and the instrument horn segment 33 are not limited in this application.

[0104] The cross-sectional shapes of the first horn 2, the second horn 8 and the instrument horn segment 33 are not limited in this application and can be, for example, conical, catenary, Gaussian, Fourier, or other shapes.

[0105] Specifically, the rod portion of the first horn 2 is a first-type rod 91 or a second-type rod 92 , or a rod of another type.

[0106] Specifically, the rod portion of the second horn 8 is a first-type rod 91 or a second-type rod 92 , or a rod of another type.

[0107] Specifically, the instrument amplitude rod section 33 is a first type rod 91 or a second type rod 92, or a rod of other types.

[0108] Here, as Figure 10As shown, the outer diameter of the first type rod 91 gradually decreases from one end to the other end, which is what people often call a tapered rod. The intersection of the outer periphery of the first type rod 91 and its axial plane is two straight lines, and the distance between the two straight lines gradually decreases from one end to the other end. Among them, the axial plane refers to the plane passing through the axis.

[0109] Here, the outer diameter of the second type rod 92 gradually increases and then decreases from one end to the other. As shown in Figure 11(a), the outer shape of the second type rod 92 can be a multi-segment straight cone, or as shown in Figure 11(b), the outer shape of the second type rod 92 can be a curved cone. The intersection of the outer circumference of the first type rod 91 and its axial plane can be two broken lines or two curved lines. For example, each curve can be a parabola.

[0110] By providing such an ultrasonic vibration device 100, a compact and miniaturized design is achieved, which ensures efficient, large-amplitude vibration and high-speed rotation of the instrument working part 200, improves the electroacoustic conversion efficiency, reduces the heat generation of the ultrasonic vibration device 100, and extends the service life.

[0111] Throughout this specification, references to terms such as "embodiment" and "example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0112] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A rotatable ultrasonic vibration device (100), characterized in that: include: A housing (1), wherein a mounting cavity (11) is provided in the housing (1), a handle connecting portion (13) is provided on the housing (1), and a mounting hole (12) communicating with the mounting cavity (11) is provided on the housing (1); a hollow locking rod (51), the hollow locking rod (51) being installed in the installation cavity (11), one end of the hollow locking rod (51) being directly opposite to the installation hole (12) in the length direction, and the hollow locking rod (51) having a center hole (512) provided along the length direction thereof; A piezoelectric transducer (4), the piezoelectric transducer (4) being mounted in the mounting cavity (11), the piezoelectric transducer (4) being arranged around the hollow locking rod (51), and the hollow locking rod (51) fixing the piezoelectric transducer (4) in the housing (1); a first amplitude-changing rod (2), the first amplitude-changing rod (2) being mounted in the central hole (512), one end of the first amplitude-changing rod (2) being fixedly connected to the hollow locking rod (51) in the length direction, and at least a portion of the length of the first amplitude-changing rod (2) being located in the space surrounded by the piezoelectric transducer (4); An instrument rod (3), the instrument rod (3) being directly or indirectly connected to the other end of the first amplitude-changing rod (2) in the length direction; an instrument working portion (200) being located outside the housing (1) and connected to the instrument rod (3); and the instrument rod (3) being rotatable relative to the first amplitude-changing rod (2); a rotary transmission assembly (6), the rotary transmission assembly (6) being rotatably mounted on the housing (1), the rotary transmission assembly (6) cooperating with the instrument rod (3) to transmit a rotational torque to the instrument rod (3); The first horn (2) is a hollow rod; The ultrasonic vibration device (100) further includes a second amplitude transformer (8), which is installed in the first amplitude transformer (2), and at least a portion of the length of the second amplitude transformer (8) is located in the space surrounded by the piezoelectric transducer (4), and the second amplitude transformer (8) is fixedly connected to the first amplitude transformer (2) at one end in the length direction and fixedly connected to the instrument rod (3) at the other end.

2. The rotatable ultrasonic vibration device (100) according to claim 1, characterized in that: The instrument rod (3) comprises: a built-in section (31) and a step positioning section (32), wherein the built-in section (31) is arranged in the first amplitude-changing rod (2), one end of the built-in section (31) cooperates with the rotation transmission assembly (6), and the step positioning section (32) is connected to the other end of the built-in section (31) and is located outside the first amplitude-changing rod (2), and the instrument working part (200) and the built-in section (31) are located on opposite sides of the step positioning section (32); The ultrasonic vibration device (100) further comprises: a pressing elastic member (56), wherein the pressing elastic member (56) cooperates with the housing (1) and the instrument rod (3) respectively to press the step positioning section (32) against the rod end of the first amplitude changing rod (2).

3. The rotatable ultrasonic vibration device (100) according to claim 2, characterized in that: Also includes: a pre-tightening cover (55), the pre-tightening cover (55) being located outside the mounting cavity (11) and connected to the housing (1), the pre-tightening cover (55) being provided with a matching hole (551), and one end of the instrument rod (3) extending from the matching hole (551); The compression elastic member (56) is a spring, one end of which abuts against the pre-tightening cover (55) and the other end of which abuts against the step positioning section (32).

4. The rotatable ultrasonic vibration device (100) according to claim 3, characterized in that: One end of the hollow locking rod (51) extends out of the housing (1) from the mounting hole (12), and the ultrasonic vibration device (100) further includes a pressure cover (53), which is located outside the housing (1) and is tightly connected to the hollow locking rod (51) to clamp the piezoelectric transducer (4) and provide a certain pre-tightening force for the piezoelectric transducer (4); The pre-tightening cover (55) is threadedly connected to the pressure cover (53).

5. The rotatable ultrasonic vibration device (100) according to claim 1, characterized in that: The instrument rod (3) further comprises an instrument amplitude-changing rod segment (33), wherein the instrument amplitude-changing rod segment (33) is located outside the first amplitude-changing rod (2), and the instrument working portion (200) is rigidly connected to the instrument amplitude-changing rod segment (33).

6. The rotatable ultrasonic vibration device (100) according to claim 1, characterized in that A concave hole (513) is provided at the end of the hollow locking rod (51), and one end of the central hole (512) extends to the concave hole (513); One end of the first amplitude changing rod (2) is provided with a first flange (23) fitted in the recessed hole (513), and the first flange (23) is rigidly connected to the hollow locking rod (51).

7. The rotatable ultrasonic vibration device (100) according to any one of claims 1 to 6, characterized in that: The rotary transmission assembly (6) comprises: a first gear (62), the first gear (62) being mounted on the hollow locking rod (51) via a first support bearing (73); A section of the instrument rod (3) away from the instrument working part (200) is a transmission section (34); a transmission hole (621) cooperating with the transmission section (34) is provided at the center of the first gear (62); and the transmission hole (621) is a non-circular hole.

8. The rotatable ultrasonic vibration device (100) according to claim 7, characterized in that: The handle connecting portion (13) is provided with a receiving groove (15), and the ultrasonic vibration device (100) further comprises a torque input shaft (71); The rotary transmission assembly (6) further includes: a second gear (61) connected to the torque input shaft (71), the second gear (61) being supported in the accommodating groove (15) via a second support bearing (72), and the second gear (61) being meshed with the first gear (62).

9. The rotatable ultrasonic vibration device (100) according to claim 8, characterized in that: The axes of the first gear (62) and the second gear (61) are perpendicular; The outer edge of the first gear (62) surrounds the radial outer side of the hollow locking rod (51), and the first support bearing (73) is located between the outer edge of the first gear (62) and the hollow locking rod (51).

10. The rotatable ultrasonic vibration device (100) according to any one of claims 1, 2 and 6, characterized in that: The instrument rod (3) further includes an instrument amplitude-changing rod section (33); The rod portion of the first amplitude transformer (2) is a first-type rod or a second-type rod; The rod portion of the second horn (8) is a first-type rod or a second-type rod; The instrument amplitude changing rod section (33) is a first type rod or a second type rod; Among them, the outer diameter of the first type rod decreases linearly from one end to the other end, and the shape is a straight cone; the outer diameter of the second type rod gradually increases and then decreases from one end to the other end, and the shape is a multi-stage straight cone or a curved cone.

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