Piezoelectric element, ultrasonic treatment head, ultrasonic medical beauty instrument and ultrasonic treatment equipment

Abstract

The utility model provides a piezoelectric element, an ultrasonic treatment head, an ultrasonic medical beauty instrument and ultrasonic treatment equipment, the piezoelectric element is provided with a focusing cambered surface, the piezoelectric element is provided with a hollow slotted hole in the middle of the focusing cambered surface, and the hollow slotted hole penetrates through the piezoelectric element from the focusing cambered surface back to a focusing point corresponding to the focusing cambered surface. The ultrasonic treatment head is provided with the piezoelectric element, the ultrasonic medical beauty instrument is provided with the ultrasonic treatment head, the ultrasonic treatment equipment is provided with the ultrasonic medical beauty instrument, and the piezoelectric element can reduce the energy consumption of the ultrasonic treatment head and improve the use safety of the ultrasonic treatment head.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical beauty instrument technical field, specifically, it is related to a piezoelectric element, and be equipped with the ultrasonic treatment head of this piezoelectric element, be equipped with the ultrasonic medical beauty instrument of above-mentioned ultrasonic treatment head, be equipped with the ultrasonic treatment equipment of above-mentioned ultrasonic medical beauty instrument. BACKGROUND

[0002] In the medical beauty industry, the treatment head of ultrasonic medical beauty instrument (such as ultrasonic gun) is equipped with ultrasonic generator, and the ultrasonic generator includes a piezoelectric element 9, and the piezoelectric element 9 has focusing camber 91;Usually, the piezoelectric element 9 is a rectangular ball band body-shaped piezoelectric ceramic sheet (such as Figure 1 As shown). Ultrasonic generator converts electric energy into high-frequency sound wave through piezoelectric ceramic sheet, and makes ultrasonic wave focus on a point to produce high temperature;Therefore, when using ultrasonic gun to treat, the high temperature and energy produced by focusing can act on fascia layer, so that fascia layer shrinks, thereby achieving the effect of improving skin, such as stimulating the proliferation of collagen, making skin firm to reduce wrinkles.

[0003] However, the piezoelectric ceramic sheet of rectangular ball band body shape actually cannot really focus ultrasonic wave on a point, but produces a long strip type high temperature zone, and a large amount of kinetic energy is also transmitted to the fascia layer below (below the target), which has great risk;Specifically:

[0004] As shown in Figure 2 (a), take a cross section of sound wave transmission, and simplify the sound wave transmission of this cross section into a plurality of lines L1, L2, L3, L4, …, Ln.

[0005] As shown in Figure 2 (b), L1, L2 are analyzed as a group, the speed of sound wave on L1 line to focus is Vb1, which can be decomposed into Ve1 and Vc1;The speed of sound wave on L2 line to focus is Va2, which can be decomposed into Vc2 and Vd2;Among them, Ve1=Vd2, Vc1=Vc2, Ve1 and Vd2 are the same size and opposite direction, Vc1 and Vc2 are the same size and same direction. Ve1 and Vd2 are opposite in direction, so they can make the substances at the focus point collide and rub, and the kinetic energy is converted into heat energy to produce high temperature;And Vc1 and Vc2 are in the same direction to the front, so that the energy is transmitted forward, thus producing risk, so Ve1 and Vd2 can produce effects at the focus point.

[0006] As shown in Figure 2(c) and (d) shown, same reason, can focus on the role of Vd4, Ve3, Vd6, Ve5, wherein Vd4 and Ve3 size is the same, opposite direction, Vd6 and Ve5 size is the same, opposite direction, Vd6 and Ve5 size is the same, opposite direction, Vc3 and Vc4 size is the same, the same direction, Vc5 and Vc6 size is the same, the same direction. Comparison Ve1, Vd2, Ve3, Vd4, Ve5, Vd6 can be known, Ve1=Vd2>Ve3=Vd4>Ve5=Vd6, therefore, the speed of the risk is Vc1, Vc2, Vc3, Vc4, Vc5, Vc6, and because Vc1=Vc2>Vc3=Vc4>Vc5=Vc6, it can be known that the closer the piezoelectric ceramic sheet is to the center, the smaller the effect is, but the greater the risk is, which is the main risk source, and the middle part also consumes energy. SUMMARY

[0007] In order to solve the above problems, the first object of the present application is to provide a piezoelectric element which can reduce energy consumption and has high safety.

[0008] The second object of the present application is to provide an ultrasonic treatment head provided with the piezoelectric element.

[0009] The third object of the present application is to provide an ultrasonic medical and beauty instrument provided with the ultrasonic treatment head.

[0010] The fourth object of the present application is to provide an ultrasonic treatment device provided with the ultrasonic medical and beauty instrument.

[0011] In order to achieve the main object of the present application, the present application provides a piezoelectric element having a focusing camber, wherein the piezoelectric element has a hollow slot in the middle of the focusing camber, and the hollow slot penetrates the piezoelectric element from the back of the focusing camber to the focusing point corresponding to the focusing camber.

[0012] As can be seen from the above, because the high-frequency sound waves converted by the piezoelectric element are closer to the center of the focusing camber, the smaller the effect is, and the greater the risk is, so the hollow slot is arranged in the middle of the focusing camber, so that the high-frequency sound waves cannot be focused through the middle of the focusing camber, thereby reducing the risk and reducing the energy consumption. In addition, because the required instantaneous power is very high when the high-frequency sound waves are converted, the technical requirements for the power supply are also very high, and through the above design, the technical requirements for the power supply can also be reduced.

[0013] A further scheme is that the first contour of the hollow slot on the focusing camber is similar to the second contour of the focusing camber.

[0014] From the above, the design can ensure the maximum effect of the hollow groove, ensure the reliability and stability of the high-frequency sound wave converted by the piezoelectric element, and optimize the structure of the piezoelectric element.

[0015] Further, the first profile and the second profile are concentric, and the first profile and the second profile are equidistantly enlarged.

[0016] From the above, the position of the hollow groove on the focusing camber is optimal, so as to maximize the treatment effect of the ultrasonic treatment head provided with the piezoelectric element, and minimize the risk and energy consumption of the ultrasonic treatment head.

[0017] Further, the equidistant enlargement ratio of the second profile to the first profile is between 2:1 and 3:1.

[0018] From the above, the design can ensure the effect of the high-frequency sound wave converted by the piezoelectric element, and ensure the treatment effect of the ultrasonic treatment head.

[0019] Further, the piezoelectric element is in a rectangular spherical band shape or a spherical band shape; and the piezoelectric element is made of piezoelectric ceramic, quartz crystal, lithium niobate or piezoelectric composite material.

[0020] From the above, the shape of the piezoelectric element can be adjusted according to the shape of the ultrasonic treatment head and the ultrasonic wave generator, so as to improve the application range, use flexibility and practicability of the piezoelectric element.

[0021] In order to achieve the second purpose of the utility model, the utility model provides an ultrasonic treatment head, including first shell and ultrasonic wave generator, first shell has window, ultrasonic wave generator is located in first shell, wherein, the ultrasonic treatment head includes above -mentioned piezoelectric element, focusing camber is towards window setup, focusing focus is located outside first shell.

[0022] From the above, the ultrasonic treatment head provided with the piezoelectric element has lower use risk and energy consumption.

[0023] In order to achieve the third purpose of the utility model, the utility model provides an ultrasonic medical beauty instrument, including handle, handle is equipped with first electric connection part, wherein, the ultrasonic medical beauty instrument still includes above -mentioned ultrasonic treatment head, and the ultrasonic treatment head is equipped with second electric connection part, and the ultrasonic treatment head is installed on the handle, and the second electric connection part is electrically connected with the first electric connection part.

[0024] From the above, the ultrasonic medical beauty instrument has lower use risk and energy consumption by being provided with the ultrasonic treatment head.

[0025] Further, the handle has a plug-in end, the first electric connection part is arranged at the plug-in end; one of the plug-in end and the first shell is provided with a plug-in part, and the other is provided with an inner recessed clamping groove, the plug-in part is detachably inserted into the inner recessed clamping groove; the plug-in end is further provided with a first quick release connection module, the first shell is provided with a second quick release connection module at the first quick release connection module, and the second quick release connection module is detachably connected with the first quick release connection module.

[0026] As can be seen, the design makes the ultrasonic treatment head replaceable, facilitates quick replacement, and facilitates maintenance and repair.

[0027] Further, the second quick release connection module comprises a clamping jaw; the first quick release connection module comprises a jack, a lock tongue button and an elastic piece, the jack is formed on the plug-in end, the clamping jaw is inserted into the jack, the jaw end of the clamping jaw is located in the second shell of the handle, the lock tongue button is slidably arranged in the second shell, the lock tongue button has a pressing part and a lock tongue part, the pressing part penetrates through the second shell, the pressing part can drive the lock tongue part to be separated from the jaw end, and the elastic piece forces the lock tongue button to slide towards the jaw end so that the lock tongue part is connected with the jaw end in a buckling manner; the ultrasonic medical and aesthetic instrument is an ultrasonic gun or an ultrasonic knife.

[0028] As can be seen, the design makes the ultrasonic treatment head and the handle more convenient, faster and easier to disassemble and assemble.

[0029] In order to achieve the fourth purpose of the utility model, the utility model provides an ultrasonic treatment equipment, including a host computer, wherein, still including the above-mentioned ultrasonic medical and aesthetic instrument, and the ultrasonic medical and aesthetic instrument is electrically connected with the host computer.

[0030] As can be seen, the ultrasonic treatment equipment provided with the above-mentioned ultrasonic medical and aesthetic instrument has higher safety, lower energy consumption and cost. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is a structural diagram of the existing piezoelectric element.

[0032] Figure 2 (a) is a schematic diagram of the transmission of the existing sound wave on a section of the piezoelectric element.

[0033] Figure 2 (b) is Figure 2 (a) is a transmission analysis diagram of lines L1 and L2 simplified from the transmission of the sound wave.

[0034] Figure 2 (c) is Figure 2 (a) is a transmission analysis diagram of lines L3 and L4 simplified from the transmission of the sound wave.

[0035] Figure 2 (d) is Figure 2 (a) is a transmission analysis diagram of lines L5 and L6 simplified from the transmission of the sound wave.

[0036] Figure 3 is the sectional view of the embodiment of the ultrasonic medical beauty instrument.

[0037] Figure 4 is the structure diagram of the ultrasonic treatment head of the embodiment of the ultrasonic medical beauty instrument.

[0038] Figure 5 is the exploded view of the ultrasonic treatment head of the embodiment of the ultrasonic medical beauty instrument.

[0039] Figure 6 is the structure diagram of the piezoelectric element of the embodiment of the ultrasonic medical beauty instrument under the first perspective.

[0040] Figure 7 is the structure diagram of the piezoelectric element of the embodiment of the ultrasonic medical beauty instrument under the second perspective.

[0041] Figure 8 is the sectional view of the handle of the embodiment of the ultrasonic medical beauty instrument.

[0042] Figure 9 is the structure diagram of the embodiment of the ultrasonic medical beauty instrument after omitting part of the assembly.

[0043] Figure 10 is the sectional view of the local structure of the embodiment of the ultrasonic medical beauty instrument.

[0044] The utility model will be further described below in combination with the drawings and embodiments. DETAILED DESCRIPTION

[0045] Embodiment of ultrasonic medical beauty instrument

[0046] Referring to Figure 3 , the ultrasonic medical beauty instrument 100 comprises an ultrasonic treatment head 1 and a handle 2, the ultrasonic treatment head 1 is installed on the handle 2 and is electrically connected with the handle 2. Preferably, the ultrasonic treatment head 1 is detachably connected with the handle 2, so that the ultrasonic treatment head 1 has replaceability, and therefore the treatment depth of the ultrasonic medical beauty instrument 100 can be changed by replacing the ultrasonic treatment head 1, the practicability of the ultrasonic medical beauty instrument 100 is improved, and the use cost of the ultrasonic medical beauty instrument 100 is reduced.

[0047] In combination with Figure 4 and Figure 5, the ultrasonic treatment head 1 comprises a first shell 11 and an ultrasonic generator 12. The first shell 11 has a window 111, the ultrasonic generator 12 is installed in the first shell 11, and the focusing focal point of the ultrasonic generator 12 is located outside the window 111. Wherein, the ultrasonic generator 12 comprises a piezoelectric element 121, the piezoelectric element 121 has a focusing camber 1211, the focusing camber 1211 is arranged towards the window 111, and the focusing focal point corresponding to the focusing camber 1211 is located outside the first shell 11 (i.e. the focusing focal point is located outside the window 111).

[0048] In combination with Figure 6 and Figure 7 Since the high-frequency sound wave converted by the piezoelectric element 121 has less effect and greater risk when it is closer to the center of the focusing camber 1211, the piezoelectric element 121 is designed as follows: the piezoelectric element 121 has a hollow slot 1212 in the middle of the focusing camber 1211, and the hollow slot 1212 penetrates the piezoelectric element 121 from the back of the focusing camber 1211 to the focusing focal point corresponding to the focusing camber 1211. The piezoelectric element 121 can make the high-frequency sound wave unable to focus through the middle of the focusing camber 1211 through the hollow slot 1212, thereby reducing the risk and reducing energy consumption; in addition, since the required instantaneous power is very high when the high-frequency sound wave is converted, the technical requirements for the power supply are also very high, and through the above design, the required instantaneous power can be reduced, thereby also reducing the technical requirements for the power supply.

[0049] Preferably, the piezoelectric element 121 is a sheet structure with a certain thickness, and the first profile of the hollow slot 1212 on the focusing camber 1211 is preferably similar to the second profile of the focusing camber 1211, to ensure that the efficacy of the hollow slot 1212 is maximized, while ensuring the reliability and stability of the high-frequency sound wave converted by the piezoelectric element 121, and making the structure of the piezoelectric element 121 more optimized and reasonable, and facilitating design and processing.

[0050] Furthermore, the first contour of the hollowed-out slot 1212 and the second contour of the focusing arc surface 1211 overlap at their centers, and the first contour of the hollowed-out slot 1212 and the second contour of the focusing arc surface 1211 are enlarged at equal intervals, so that the position of the hollowed-out slot 1212 on the focusing arc surface 1211 is optimal, so as to maximize the therapeutic efficacy of the ultrasonic treatment head 1 equipped with this piezoelectric element 121 and minimize the risk and energy consumption of the ultrasonic treatment head 1. For example, when the second contour of the focusing arc surface 1211 is rectangular, the first contour of the hollow slot 1212 is also rectangular, making the piezoelectric element 121 resemble a rectangular spherical ribbon (which can be considered as the part where a rectangular toroidal surface intersects the spherical surface after moving along a radius of a thick spherical surface from the outside to the inside of the spherical surface); when the second contour of the focusing arc surface 1211 is a rounded rectangle, the first contour of the hollow slot 1212 is also a rounded rectangle, making the piezoelectric element 121 resemble a rectangular spherical ribbon, specifically a rounded rectangular spherical ribbon (which can be considered as the part where a rounded rectangular toroidal surface intersects the spherical surface after moving along a radius of a thick spherical surface from the outside to the inside of the spherical surface, see [reference]). Figure 6 (as shown in the figure). When the second contour of the focusing arc surface 1211 is circular, the first contour of the hollowed-out slot 1212 is also circular, making the piezoelectric element 121 resemble a spherical ribbon. More specifically, the piezoelectric element 121 is shaped like a spherical ribbon (which can be regarded as a spherical ribbon surface with thickness). It can be seen that the shape of the piezoelectric element 121 is not fixed, but can be adjusted according to the shape of the ultrasonic treatment head 1 and the ultrasonic generator 12 to improve the applicability, flexibility and practicality of the piezoelectric element 121.

[0051] The equal distance magnification ratio of the second profile of the focusing arc surface 1211 to the first profile of the hollowed-out slot hole 1212 is preferably between 2:1 and 3:1, so as to ensure the effect of the piezoelectric element 121 in converting high-frequency sound waves and ensure the treatment efficacy of the ultrasonic treatment head 1. For example, when the first profile of the hollowed-out slot hole 1212 and the second profile of the focusing arc surface 1211 are both rectangular or rounded rectangular, the first length (i.e., the first long circular arc side) L1 of the first profile of the hollowed-out slot hole 1212 is between one-third and one-half of the second length (i.e., the second long circular arc side) L2 of the second profile of the focusing arc surface 1211, and the first width (i.e., the first short circular arc side) W1 of the first profile of the hollowed-out slot hole 1212 is between one-third and one-half of the second width (i.e., the second short circular arc side) W2 of the second profile of the focusing arc surface 1211; when the first profile of the hollowed-out slot hole 1212 and the second profile of the focusing arc surface 1211 are both circular, the first diameter of the first profile of the hollowed-out slot hole 1212 is between one-third and one-half of the second profile of the focusing arc surface 1211. In addition, the piezoelectric element 121 is made of piezoelectric ceramic, quartz crystal, lithium niobate, or piezoelectric composite material to ensure the performance of the piezoelectric element 121.

[0052] In combination Figure 8 The handle 2 is provided with a first electrical connection part 22, and the ultrasonic treatment head 1 is provided with a second electrical connection part 112, so that when the ultrasonic treatment head 1 is assembled and connected with the handle 2, the second electrical connection part 112 is electrically connected with the first electrical connection part 22. The handle 2 further includes a second housing 21 and a control unit, the control unit is installed in the second housing 21 and is electrically connected with the first electrical connection part 22, and the second housing 21 has a plug-in end, and the first electrical connection part 22 is arranged at the plug-in end; one of the plug-in end and the first housing 11 is provided with a plug-in part 211, and the other is provided with an inner recessed clamping groove 110, and the plug-in part 211 is detachably inserted and assembled in the inner recessed clamping groove 110. In this embodiment, the plug-in part 211 is formed on the first end of the handle 2; the first housing 11 is preferably in the shape of a circular truncated cone, the window 111 is formed on the small-diameter end of the first housing 11, and the large-diameter end of the first housing 11 is formed with the inner recessed clamping groove 110.

[0053] In addition, the plug-in end is also provided with a first quick-release connection module 23, and correspondingly, the first shell 11 is provided with a second quick-release connection module 113 at the first quick-release connection module 23, and the second quick-release connection module 113 is detachably connected with the first quick-release connection module 23, so that the ultrasonic treatment head 1 and the handle 2 are quickly assembled and disassembled through the first quick-release connection module 23 and the second quick-release connection module 113, so as to facilitate the quick replacement of the ultrasonic treatment head 1, and facilitate the maintenance and repair of the ultrasonic treatment head 1. In this embodiment, the second quick-release connection module 113 includes a clamping jaw, the first quick-release connection module 23 includes a socket 231, a lock button 232 and an elastic member 233, the socket 231 is formed on the plug-in end of the second shell 21, when the ultrasonic treatment head 1 and the handle 2 are assembled, the clamping jaw is inserted into the socket 231, and the jaw end 1131 of the clamping jaw is located in the second shell 21.

[0054] The lock button 232 is slidably installed in the second shell 21, the lock button 232 has a pressing portion 2321 and a lock portion 2322, the pressing portion 2321 penetrates through the second shell 21, and the pressing portion 2321 can drive the lock portion 2322 to be separated from the jaw end 1131; and the elastic member 233 is used to force the lock button 232 to slide towards the jaw end 1131 so that the lock portion 2322 is buckled and connected with the jaw end 1131, so as to achieve the locking and fixing of the ultrasonic treatment head 1.

[0055] In combination Figure 9 And Figure 10 When the ultrasonic treatment head 1 and the handle 2 are assembled, the plug-in portion 211 of the handle 2 is inserted into the inner recessed slot 110 of the ultrasonic treatment head 1, so that the first electric connection portion 22 is electrically connected with the second electric connection portion 112, and the clamping jaw is inserted into the socket 231; at this time, the lock button 232 moves towards the jaw end 1131 of the clamping jaw under the action of the elastic member 233, and then the lock portion 2322 of the lock button 232 is buckled and connected with the jaw end 1131, so as to lock and fix the ultrasonic treatment head 1 on the handle 2.

[0056] When the ultrasonic treatment head 1 and the handle 2 need to be disassembled, the pressing portion 2321 of the lock button 232 is pressed to move the lock button 232 away from the jaw end 1131 of the clamping jaw, and then the lock portion 2322 of the lock button 232 is separated from the jaw end 1131, and the elastic member 233 is energized, and then the ultrasonic treatment head 1 can be removed from the handle 2; after the ultrasonic treatment head 1 is removed from the handle 2, the lock button 232 is reset under the action of the elastic member 233.

[0057] Preferably, the handle 2 further comprises a rubber sleeve 24 sleeved on the second housing 21 to cover the second housing 21 and the pressing part 2321 of the lock tongue button 232, so as to effectively prevent external moisture and dust from entering the second housing 21 through the gap between the second housing 21 and the pressing part 2321, thereby protecting the control unit and ensuring the stability and reliability of the operation of the control unit; in addition, the rubber sleeve 24 can also improve the aesthetics of the handle 2.

[0058] In the embodiment, the ultrasonic treatment head 1 is preferably a head of an ultrasonic gun, and correspondingly, the ultrasonic medical and aesthetic instrument 100 is an ultrasonic gun; of course, in other embodiments, the ultrasonic treatment head 1 can also be a head of an ultrasonic knife, and correspondingly, the ultrasonic medical and aesthetic instrument 100 is an ultrasonic knife.

[0059] As can be seen from the above, the ultrasonic medical and aesthetic instrument 100 has higher safety, lower use risk and lower energy consumption through the design of the piezoelectric element 121 of the ultrasonic treatment head 1.

[0060] Embodiment of ultrasonic treatment device

[0061] The ultrasonic treatment device comprises a host and the ultrasonic medical and aesthetic instrument described in the above embodiment of the ultrasonic medical and aesthetic instrument, and the host is electrically connected with the control unit of the ultrasonic medical and aesthetic instrument. The ultrasonic treatment device has higher safety, lower energy consumption and lower cost through the design of the ultrasonic medical and aesthetic instrument.

[0062] Finally, it should be emphasized that the above description is only the preferred embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A piezoelectric element having a focusing arc surface, characterized in that: The piezoelectric element has a hollowed-out slot in the middle of the focusing arc surface, and the hollowed-out slot passes through the piezoelectric element from the focusing arc surface away from the focusing arc surface to the focal point corresponding to the focusing arc surface.

2. The piezoelectric element according to claim 1, characterized in that: The first contour of the hollowed-out slot on the focusing arc surface is similar to the second contour of the focusing arc surface.

3. The piezoelectric element according to claim 2, characterized in that: The centers of the first contour and the second contour overlap, and the first contour and the second contour are enlarged at equal intervals.

4. The piezoelectric element according to claim 3, characterized in that: The equidistant magnification ratio between the second contour and the first contour is between 2:1 and 3:

1.

5. The piezoelectric element according to any one of claims 1 to 4, characterized in that: The piezoelectric element is in the shape of a rectangular spherical ribbon or a spherical ribbon; The piezoelectric element is made of piezoelectric ceramic, quartz crystal, lithium niobate, or piezoelectric composite material.

6. Ultrasonic therapy head, including: A first housing, the first housing having a window; An ultrasonic generator, wherein the ultrasonic generator is disposed within the first housing; Its features are: The ultrasonic treatment head includes a piezoelectric element as described in any one of claims 1 to 5, the focusing arc surface is disposed toward the window, and the focusing focal point is located outside the first housing.

7. An ultrasonic medical aesthetic device, including a handle, wherein the handle is provided with a first electrical connection portion, characterized in that: The ultrasonic medical aesthetic device further includes the ultrasonic treatment head as described in claim 6, the ultrasonic treatment head having a second electrical connection portion, the ultrasonic treatment head being mounted on the handle, and the second electrical connection portion being electrically connected to the first electrical connection portion.

8. The ultrasonic medical aesthetic device according to claim 7, characterized in that: The handle has a plug-in end, and the first electrical connection part is disposed on the plug-in end; The plug-in terminal is provided with a plug-in part in one of the first housings and a recessed slot in the other. The plug-in part is detachably inserted into the recessed slot. The plug-in terminal is also provided with a first quick-release connection module, and the first housing is provided with a second quick-release connection module at the first quick-release connection module, and the second quick-release connection module is detachably connected to the first quick-release connection module.

9. The ultrasonic medical aesthetic device according to claim 8, characterized in that: The second quick-release connection module includes a locking claw; The first quick-release connection module includes a socket, a locking tongue button, and an elastic element. The socket is formed on the plug end, and the claw is inserted into the socket. The claw end of the claw is located inside the second housing of the handle. The locking tongue button is slidably installed inside the second housing. The locking tongue button has a pressing part and a locking tongue part. The pressing part penetrates through the second housing. The pressing part can drive the locking tongue part to disengage from the claw end. The elastic element forces the locking tongue button to slide towards the claw end so that the locking tongue part and the claw end are engaged and connected. The ultrasonic medical aesthetic device is an ultrasonic cannon or an ultrasonic scalpel.

10. An ultrasound therapy device, comprising a main unit, characterized in that, It also includes the ultrasonic medical aesthetic device as described in any one of claims 7 to 9, wherein the ultrasonic medical aesthetic device is electrically connected to the main unit.

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