An ultrasonic generator that allows you to adjust the ultrasonic focusing depth

Abstract

The present invention relates to an ultrasonic generator capable of adjusting the focal depth of ultrasonic waves, comprising: a handpiece, a cartridge housing, an ultrasonic generating unit provided in the cartridge housing and connected to a moving shaft extending from the handpiece, the ultrasonic generating unit including a transducer for generating ultrasonic waves, a variable shaft connected to the ultrasonic generating unit and provided movable in the vertical direction of the transducer, and an operation unit for moving the variable shaft in the vertical direction, the movable shaft being provided movable in the axial direction of the variable shaft. The ultrasonic generating unit can be moved in the vertical direction by operation of the operation unit, and after a target position in the vertical direction is determined, the ultrasonic generating unit can be moved in the axial direction of the variable shaft by the movable shaft, or the ultrasonic generating unit can be moved in the axial direction of the variable shaft by the movable shaft, and after a focal position of ultrasonic waves is determined, the ultrasonic generating unit can be moved in the vertical direction by operation of the operation unit.

Description

[Technical field]

[0001] The present invention relates to an ultrasonic generator capable of adjusting the focusing depth of ultrasonic waves. [Background technology]

[0002] Ultrasound is a type of wave with a frequency of 20 kHz or higher, and is used in a variety of ways, including for diagnosis and treatment of affected areas in the medical field, as well as for skin beauty treatments.

[0003] In particular, high intensity focused ultrasound (HIFU), which is a form of ultrasound focused at high intensity, can be non-invasively focused at a target depth in the skin without causing any damage to the surface of the skin, unlike lasers and radio frequency (RF). As a result, a rapid temperature rise is induced at the target depth of the skin, causing coagulation necrosis of cells without leaving side effects in various affected areas of the skin. The necrotic cells are naturally removed by the recovery mechanism of the damaged parts of our body.

[0004] On the other hand, a conventional ultrasonic generator has a cartridge housing and an ultrasonic generating unit that is built into the cartridge housing and radiates ultrasonic waves.

[0005] In such a conventional ultrasonic generator, the ultrasonic generating unit is fixed inside the cartridge housing, so that the focusing depth of the ultrasonic waves from the ultrasonic generating unit cannot be adjusted.

[0006] Therefore, the conventional ultrasonic generator has a problem in that the focal depth of the ultrasonic waves cannot be adjusted according to the target depth of the skin. Summary of the Invention [Problem to be solved by the invention]

[0007] The present invention has been made in consideration of the above circumstances, and its object is to provide an ultrasonic generator that can easily adjust the focal depth of ultrasonic waves according to a target depth of the skin.

[0008] The problems to be solved by the present invention are not limited to those mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description. [Means for solving the problem]

[0009] According to one embodiment of the present invention, an ultrasonic generator capable of adjusting the focused depth of ultrasonic waves includes a handpiece, a cartridge housing, an ultrasonic generating unit provided in the cartridge housing and connected to a moving shaft extending from the handpiece, the ultrasonic generating unit including a transducer that generates ultrasonic waves, a variable shaft connected to the ultrasonic generating unit and arranged to be movable in an up-down direction of the transducer, and an operating unit for moving the variable shaft in the up-down direction, and the moving shaft can be arranged to be movable in an axial direction of the variable shaft.

[0010] The variable shaft may be provided so as to be extendable and contractible in an axial direction of the variable shaft by the moving shaft.

[0011] Additionally, the variable shaft may include one or more shafts having different diameters and capable of being inserted and removed in multiple stages.

[0012] The cartridge housing may further include a guide portion that guides the ultrasonic generating unit to move in the vertical direction and the axial direction of the variable shaft, and the guide portion may include a guide shaft that passes through the ultrasonic generating unit.

[0013] Furthermore, the guide portion may further include at least one elastic member provided on the ultrasonic generating unit.

[0014] The ultrasonic wave generating unit may further include a first magnetic member provided on the ultrasonic wave generating unit, and a second magnetic member provided on the moving shaft and magnetically coupled to the first magnetic member.

[0015] Furthermore, the operating portion may be a driving means, a button or a knob.

[0016] Further details of the invention are contained in the detailed description and the drawings. Effect of the Invention

[0017] The ultrasound generating device according to an embodiment of the present invention can easily adjust the focusing depth of ultrasound depending on the target depth of the skin.

[0018] In addition, in an ultrasonic generating device according to one embodiment of the present invention, the connector of the ultrasonic generating unit is slidably connected to the guide shaft, so that when adjusting the position of the ultrasonic generating unit, the ultrasonic generating unit is prevented from rotating when it moves in the vertical direction or along the axial direction of the variable shaft, and the position of the ultrasonic generating unit can be precisely adjusted, allowing stable ultrasonic therapy to be performed through the transducer of the ultrasonic generating unit.

[0019] The effects of the present invention are not limited to those mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the following description. [Brief description of the drawings]

[0020] [Figure 1] 1 is a schematic diagram showing an ultrasonic generating device according to a first embodiment of the present invention. [Diagram 2] 1 is a cross-sectional view showing a connector of an ultrasonic generator according to a first embodiment of the present invention. [Diagram 3] 4 is an operational diagram showing a state in which the focal depth of ultrasonic waves of the transducer of the ultrasonic generating device according to the first embodiment of the present invention is adjusted. FIG. [Figure 4]4 is an operational diagram showing a state in which the focal depth of ultrasonic waves of the transducer of the ultrasonic generating device according to the first embodiment of the present invention is adjusted. FIG. [Diagram 5] FIG. 2 is an operational view showing a state in which an ultrasonic generating unit of the ultrasonic generating device according to the first embodiment of the present invention has moved in the axial direction of a moving shaft. [Figure 6] FIG. 11 is a schematic diagram showing an ultrasonic generating device according to a second embodiment of the present invention. [Figure 7] FIG. 11 is an operational diagram showing a state in which the focal depth of ultrasonic waves of a transducer of an ultrasonic generating device according to a second embodiment of the present invention is adjusted. [Figure 8] FIG. 11 is an operational diagram showing a state in which the focal depth of ultrasonic waves of a transducer of an ultrasonic generating device according to a second embodiment of the present invention is adjusted. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] The advantages and features of the present invention, as well as the methods for achieving them, will become apparent from the following detailed description of the embodiments in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, and may be embodied in various different forms. However, the embodiments are provided to complete the disclosure of the present invention and to allow those skilled in the art to fully understand the scope of the present invention, and the present invention is defined only by the scope of the claims.

[0022] The terms used in this specification are for the purpose of describing the embodiments and are not intended to limit the present invention. In this specification, the singular includes the plural unless otherwise specified. The terms "comprises" and / or "comprising" used in this specification do not exclude the presence or addition of one or more other components other than the components mentioned. The same reference numerals throughout this specification refer to the same components, and "and / or" includes each and every combination of one or more of the components mentioned. Even if "first", "second", etc. are used to describe various components, these components are not limited by these terms. These terms are used simply to distinguish one component from another component. Therefore, it goes without saying that the first component mentioned below may also be the second component within the technical spirit of the present invention.

[0023] Unless otherwise defined, all terms (including technical and scientific terms) used in this specification are used as meanings commonly understood by ordinary skilled artisans in the technical field to which the present invention belongs. Furthermore, terms defined in commonly used dictionaries are not interpreted ideally or excessively unless clearly and specifically defined.

[0024] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0025] Prior to describing the present invention, components having the same configuration in multiple embodiments will be described using the same reference numerals, and a first embodiment will be described as a representative example, while configurations different from those in the first embodiment will be described in the other embodiments.

[0026] FIG. 1 is a schematic diagram showing an ultrasonic generator according to a first embodiment of the present invention, and FIG. 2 is a cross-sectional view showing a connector of the ultrasonic generator according to the first embodiment of the present invention.

[0027] As shown in FIG. 1, the ultrasonic generating device according to the first embodiment of the present invention includes a handpiece 10, a cartridge housing 20, an ultrasonic generating unit 30, a variable shaft 40, an operating section 50, and a guide section .

[0028] Here, the handpiece 10 and the cartridge housing 20 are the basic main body, the ultrasonic generating unit 30 includes a transducer 32 that generates ultrasonic waves, the variable axis 40 and the operating unit 50 serve to move the ultrasonic generating unit 30 in the vertical direction of the transducer 32, and the guide unit 70 is provided on the cartridge housing 20 and serves to guide the ultrasonic generating unit 30 to move in the vertical direction of the transducer 32 and in the axial direction of the variable axis 40.

[0029] The handpiece 10 is a basic body that can be used as a handle for a user to hold, and a cartridge housing 20, which will be described later, is removably coupled to one side of the handpiece 10. An ultrasound generating unit 30 having a transducer 32 that generates ultrasound is disposed inside the cartridge housing 20. Thus, a user can hold the handpiece 10 and move the handpiece 10 so that the cartridge housing 20 is in close contact with the surface of the skin, and then irradiate ultrasound generated from the transducer 32 to a target depth of the skin to perform an ultrasound medical treatment.

[0030] A cable may be provided inside the handpiece 10, which is connected to an RF board for applying an RF current to the transducer 32. The RF board may be housed in the main body or the handpiece 10, and may apply an RF current to the transducer 32 intermittently or continuously.

[0031] The cartridge housing 20 is a type of case that houses the transducer 32 and is detachably coupled to the handpiece 10 .

[0032] The cartridge housing 20 can accommodate a fluid medium for transmitting ultrasonic waves generated by the transducer 32. Here, the fluid medium can be, but is not limited to, distilled water, degassed liquid, or silicone.

[0033] The ultrasonic wave generating unit 30 is provided in the cartridge housing 20 and includes a connector 31 connected to a variable shaft 40 (described later) and a transducer 32 connected to the connector 31 for generating ultrasonic waves.

[0034] The connector 31 is provided on the cartridge housing 20 , one side of the connector 31 is connected to the variable shaft 40 , and the other side of the connector 31 is connected to the transducer 32 .

[0035] The transducer 32 can focus ultrasonic waves at a specific position by receiving an electric signal from the RF board via a cable of the handpiece 10. Here, the up and down direction of the transducer 32 can be defined as the direction in which the focusing depth of the ultrasonic waves of the transducer 32 changes.

[0036] Here, the vertical distance from the end of the cartridge housing 20 to a specific position where the ultrasonic waves are focused can be defined as the ultrasonic focusing depth of the transducer 32. In this embodiment, the ultrasonic focusing depth of the transducer 32 can be adjusted by moving the ultrasonic generating unit 30 in the vertical direction of the transducer 32, which will be described later.

[0037] Meanwhile, the ultrasonic generating unit 30 can be detachably coupled to the cartridge housing 20. For example, the ultrasonic generating unit 30 can be screwed to the cartridge housing 20. Also, the ultrasonic generating unit 30 can be located within the cartridge housing 20 and detachably coupled, for example, by a protrusion and a groove.

[0038] The guide portion 70 may include a guide shaft 72 that passes through the ultrasonic generating unit 30 .

[0039] 2, the connector 31 of the ultrasonic generating unit 30 may be provided with one or more elastic members 80, which will be described later, for elastically supporting the guide shaft 72.

[0040] The guide shaft 72 guides the movement of the transducer 32 in the vertical direction and in the axial direction of the variable shaft 40. As will be described later, the moving shaft 121 plays a role in moving the ultrasonic generating unit 30 in the axial direction of the variable shaft 40.

[0041] The guide shaft 72 is provided in the cartridge housing 20 and disposed parallel to the variable shaft 40, and the connector 31 can be coupled to the transducer 32 so as to be movable in the up and down direction. Such a guide shaft 72 can be fixed to the cartridge housing 20, but for example, both sides of the guide shaft 72 can be coupled to both sides of the cartridge housing 20, respectively.

[0042] On the other hand, the guide shaft 72 can be slidably coupled to the connector 31 of the ultrasonic generating unit 30 .

[0043] In addition, the guide shaft 72 can be disposed below the variable shaft 40 .

[0044] In this way, by slidably connecting the connector 31 of the ultrasonic generating unit 30 to the guide shaft 72, when adjusting the position of the ultrasonic generating unit 30, the ultrasonic generating unit 30 is prevented from rotating when it moves along the vertical direction of the transducer 32 or along the axial direction of the variable shaft 40, thereby enabling the position of the ultrasonic generating unit 30 to be precisely adjusted and stable ultrasonic treatment to be performed via the transducer 32 of the ultrasonic generating unit 30.

[0045] One or more elastic members 80 may be provided inside the connector 31 of the ultrasonic generating unit 30 .

[0046] One or more elastic members 80 can elastically support the guide shaft 72. Specifically, one or more elastic members 80 are provided in a pair, and the pair of elastic members 80 are arranged facing each other in the vertical direction with the bushing 60 to which the guide shaft 72 is slidably coupled sandwiched therebetween, and can elastically support the bushing 60 inserted inside the connector 31 of the ultrasonic generating unit 30. A spring can be used as such an elastic member 80, but is not particularly limited thereto.

[0047] The bushing 60 encases a specific portion of the guide shaft 72. Such a bushing 60 can slide along the axial direction of the guide shaft 72, and in conjunction with this, the connector 31 can also slide along the axial direction of the guide shaft 72. Meanwhile, a pair of elastic members 80 are disposed opposite each other in the up-down direction with the bushing 60 in between, and can elastically support the bushing 60.

[0048] Here, in this embodiment, the bushing 60 is slidably coupled to the guide shaft 72, and the bushing 60 is elastically supported by a pair of elastic members 80, but the present invention is not limited to this, and the bushing 60 can be selectively provided. In this case, the connector 31 moves along the axial direction of the guide shaft 72, and the guide shaft 72 can be elastically supported by the pair of elastic members 80.

[0049] The variable shaft 40 is coupled to the ultrasonic generating unit 30 and is disposed horizontally with respect to the up-down direction of the transducer 32. Specifically, the variable shaft 40 can be connected to the connector 31 of the ultrasonic generating unit 30. Therefore, when the variable shaft 40 moves in the up-down direction of the transducer 32, the ultrasonic generating unit 30 can also move in the up-down direction of the transducer 32 in conjunction with the variable shaft 40.

[0050] Both ends of the variable shaft 40 can be coupled to an operating section 50 and a connector 31, respectively, which will be described later.

[0051] The variable axis 40 can be disposed parallel to a direction perpendicular to the up-down direction of the transducer 32. Here, the direction perpendicular to the up-down direction of the transducer 32 can be the axial direction of the variable axis 40.

[0052] The variable shaft 40 can be provided so as to be extendable and contractable in the axial direction of the variable shaft 40 by the moving shaft 121. On the other hand, when the variable shaft 40 extends and contracts, the connector 31 can move along the axial direction of the variable shaft 40.

[0053] The variable shaft 40 may include one or more shafts having different diameters and capable of being inserted and removed in multiple stages. That is, the variable shaft 40 may have a form in which a plurality of shafts having different diameters are connected to each other so as to be telescopically movable.

[0054] The operating unit 50 is coupled to the variable shaft 40 and moves the variable shaft 40 in the vertical direction of the transducer 32. In this way, when the variable shaft 40 is moved in the vertical direction of the transducer 32 by the operating unit 50, the ultrasonic generating unit 30 also moves in the vertical direction of the transducer 32 in conjunction with this, so that the focal depth of the ultrasonic waves of the transducer 32 can be easily adjusted.

[0055] As an example, the operation unit 50 may be a driving means for driving the variable shaft 40 in the up and down directions of the transducer 32 .

[0056] As another example, the operating unit 50 may be a knob coupled to an end of the variable shaft 40. A force for moving the transducer 32 in the vertical direction may be applied to such a knob by a user. Here, the operating unit 50 may move along a rack gear formed at a certain length along the vertical direction on the outer surface of the cartridge housing 20. The operating unit 50 may be provided with a pinion gear that is selectively engaged or disengaged with the rack gear.

[0057] The moving shaft 121 serves to move the transducer 32 along the axial direction of the variable shaft 40. Such a moving shaft 121 can be provided so as to be movable in the axial direction of the variable shaft.

[0058] The moving shaft 121 is coupled to the variable shaft 40, and can move the connector 31 coupled to the variable shaft 40 along the axial direction of the variable shaft 40 by expanding and contracting the variable shaft 40. Here, the moving shaft 121 moves in the axial direction of the variable shaft 40, and can expand and contract the variable shaft 40. Such movement of the moving shaft 121 can be performed by a driving device. Here, the driving device can be, but is not limited to, an actuator and a driving motor.

[0059] Meanwhile, the moving shaft 121 and the variable shaft 40 can be separably coupled by a first magnetic member 130 and a second magnetic member 140, which will be described later.

[0060] The first magnetic member 130 may be provided in the connector 31, facing the variable shaft 40. The first magnetic member 130 may have a length equal to or greater than the maximum movement distance of the variable shaft 40. Here, the maximum movement distance of the variable shaft 40 may be defined as the maximum distance that the variable shaft 40 can move from the cartridge housing 20 based on the vertical direction of the transducer 32.

[0061] The second magnetic member 140 may be provided on the moving shaft 121 and may be magnetically coupled to the first magnetic member 130. The second magnetic member 140 may have a length shorter than that of the first magnetic member 130 based on the vertical direction of the transducer 32.

[0062] Meanwhile, a first tube 90 accommodating a region of the moving shaft 121, the first magnetic member 130 and the second magnetic member 140 may be provided between one surface of the cartridge housing 20 and the connector 31. A second tube 100 accommodating the variable shaft 40 may be provided between the other surface of the cartridge housing 20 and the connector 31. The first tube 90 and the second tube 100 may be expandable and contractible bellows hoses.

[0063] The first tube 90 and the second tube 100 may have an elliptical shape having a major axis whose length in the vertical direction of the transducer 32 is longer than its length in other directions. Since the first tube 90 and the second tube 100 are formed in an elliptical shape in this manner, when the moving shaft 121 and the variable shaft 40 move in the vertical direction of the transducer 32, the moving range of the moving shaft 121 and the variable shaft 40 can be secured, and airtightness between the inside and outside of the cartridge housing 20 can be secured.

[0064] In addition, the first pipe 90 and the second pipe 100 are each formed of a material having soft properties, such as urethane or silicone, thereby reducing the possibility of gaps occurring in the first pipe 90 and the second pipe 100, preventing leakage of the medium, and further ensuring reliability in airtightness.

[0065] As an example, the ultrasonic generating unit 30 can be moved in the vertical direction of the transducer 32 by operating the operating section 50, and after the target position of the transducer 32 in the vertical direction is determined, it can be moved in the axial direction of the variable shaft 40 by the moving shaft 121.

[0066] Here, when the target position of the transducer 32 in the vertical direction relative to the ultrasound generating unit 30 is determined, the focusing depth of the ultrasound of the transducer 32 can be adjusted to the target depth under the skin.

[0067] In addition, while the ultrasound generating unit 30 moves in a linear path in the axial direction of the variable axis 40 by the moving axis 121, the transducer 32 is activated, and ultrasound generated from the transducer 32 can be provided along a linear path in the axial direction of the variable axis 40 from the target depth under the skin.

[0068] An example of adjusting the focal depth of the ultrasonic waves of the transducer 32 of the ultrasonic generator according to the first embodiment of the present invention will be described below.

[0069] 3 and 4 are operation diagrams showing a state in which the focal depth of ultrasonic waves of the transducer of the ultrasonic generating device according to the first embodiment of the present invention is adjusted.

[0070] 3, first, the operation unit 50 moves the variable shaft 40 downward. At this time, the operation unit 50 can be manually moved downward by a user's operation.

[0071] Next, the ultrasonic generating unit 30 also moves downward in conjunction with the downward movement of the variable shaft 40. As a result, the focusing depth of the ultrasonic waves of the transducer 32 becomes deeper.

[0072] On the other hand, when the variable shaft 40 moves downward, the moving shaft 121 is fixed, but as the variable shaft 40 moves downward, the first magnetic member 130 provided on the variable shaft 40 moves downward, and the second magnetic member 140 can be coupled to the upper part of the first magnetic member 130.

[0073] Furthermore, when the ultrasonic generating unit 30 moves downward, the pair of elastic members 80 elastically support the ultrasonic generating unit 30, thereby preventing the ultrasonic generating unit 30 from rotating.

[0074] Next, as shown in Fig. 4, the operation unit 50 moves the variable shaft 40 upward. At this time, the operation unit 50 can be manually moved upward by the user.

[0075] Next, the ultrasonic generating unit 30 also moves upward in conjunction with the upward movement of the variable shaft 40. As a result, the focusing depth of the ultrasonic waves of the transducer 32 becomes shallower.

[0076] At this time, the positions of the moving shaft 121 and the second magnetic member 140 are fixed, but as the variable shaft 40 and the first magnetic member 130 move upward, the second magnetic member 140 is magnetically coupled to the lower part of the first magnetic member 130.

[0077] On the other hand, when the variable shaft 40 moves upward, the moving shaft 121 is fixed, but as the variable shaft 40 moves upward, the first magnetic member 130 provided on the variable shaft 40 moves upward, and the second magnetic member 140 can be coupled to the lower part of the first magnetic member 130.

[0078] Furthermore, when the ultrasonic generating unit 30 moves upward, the pair of elastic members 80 elastically support the ultrasonic generating unit 30, thereby preventing the ultrasonic generating unit 30 from rotating.

[0079] An example of the operation in which the ultrasonic generating unit 30 of the ultrasonic generating device according to the first embodiment of the present invention moves in the axial direction of the variable shaft 40 will be described below.

[0080] FIG. 5 is an operational diagram showing a state in which the ultrasonic generating unit of the ultrasonic generating device according to the first embodiment of the present invention moves in the axial direction of the variable shaft.

[0081] As shown in FIG. 5, first, the driving device moves the moving shaft 121 so as to approach the operation unit 50.

[0082] Next, as the movable shaft 121 moves in a direction approaching the operation section 50, the connector 31 also moves in a direction approaching the operation section 50, and in conjunction with this, the ultrasonic generating unit 30 also moves in a direction approaching the operation section 50.

[0083] On the other hand, when the variable shaft 40 moves in a direction approaching the operation portion 50, the first tube 90 can be expanded and the second tube 100 can be compressed.

[0084] Furthermore, when the ultrasonic generating unit 30 moves in a direction in which the variable shaft 40 approaches the operation section 50 , the bushing 60 provided inside the ultrasonic generating unit 30 can slide along the guide shaft 72 .

[0085] FIG. 6 is a schematic diagram showing an ultrasonic generating device according to a second embodiment of the present invention.

[0086] As shown in FIG. 6, the ultrasonic generating device according to the second embodiment of the present invention is different from the first embodiment of the present invention in that the guide shaft 73 is provided in the cartridge housing 20 and connected to the connector 31 of the ultrasonic generating unit 30, and can move in the vertical direction of the transducer 32 in conjunction with the variable shaft 40.

[0087] That is, the guide shaft 73 can move in the vertical direction of the transducer 32 together with the variable shaft 40 and the ultrasonic generating unit 30 .

[0088] In this embodiment, the pair of elastic members 80 are disposed opposite each end of the guide shaft 73, and can elastically support the guide shaft 73 moving in the up-down direction of the transducer 32. The pair of elastic members 80 can be provided on both sides of the guide shaft 73, respectively.

[0089] Hereinafter, an example of adjusting the focal depth of the ultrasonic wave of the transducer 32 of the ultrasonic generator according to the second embodiment of the present invention will be described. For convenience of explanation, the up-down direction of the transducer 32 will be defined as the up-down direction.

[0090] 7 and 8 are operation diagrams showing a state in which the focal depth of ultrasonic waves of a transducer of an ultrasonic generating device according to a second embodiment of the present invention is adjusted.

[0091] 7, first, the operation unit 50 moves the variable shaft 40 downward. At this time, the operation unit 50 can be moved downward by the user's operation.

[0092] Next, the ultrasonic generating unit 30 and the guide shaft 73 also move downward in conjunction with the downward movement of the variable shaft 40. As a result, the focusing depth of the ultrasonic waves of the transducer 32 becomes deeper.

[0093] On the other hand, when the variable shaft 40 moves downward, the movable shaft 121 is fixed, but as the variable shaft 40 moves downward, the first magnetic member 130 provided on the variable shaft 40 moves downward, and the second magnetic member 140 can be coupled to the upper part of the first magnetic member 130.

[0094] Furthermore, when the ultrasonic generating unit 30 moves downward, the pair of elastic members 80 elastically support the guide shaft 73 which moves in conjunction with the ultrasonic generating unit 30, thereby preventing the ultrasonic generating unit 30 from rotating.

[0095] 8, first, the operation unit 50 moves the variable shaft 40 upward. At this time, the operation unit 50 can be manually moved upward by the user.

[0096] Next, the ultrasonic generating unit 30 and the guide shaft 73 also move upward in conjunction with the upward movement of the variable shaft 40. As a result, the focusing depth of the ultrasonic waves of the transducer 32 becomes shallower.

[0097] On the other hand, when the variable shaft 40 moves upward, the moving shaft 121 is fixed, but as the variable shaft 40 moves upward, the first magnetic member 130 provided on the variable shaft 40 moves upward, and the second magnetic member 140 can be coupled to the lower part of the first magnetic member 130.

[0098] Furthermore, when the ultrasonic generating unit 30 moves upward, the pair of elastic members 80 elastically support the guide shaft 73 which moves in conjunction with the ultrasonic generating unit 30, thereby preventing the ultrasonic generating unit 30 from rotating.

[0099] Meanwhile, the ultrasonic generating cartridge according to the present invention is detachably attached to the handpiece 10 and can include a cartridge housing 20, an ultrasonic generating unit 30, a moving shaft 40, an operating portion 50, a guide portion 70 and an elastic member 80.

[0100] In addition, the ultrasonic generating cartridge according to the present invention may further include a moving shaft 121, a first magnetic member 130 and a second magnetic member 140.

[0101] According to the present invention, an ultrasound generating device according to an embodiment of the present invention can easily adjust the focusing depth of ultrasound depending on a target depth of the skin.

[0102] Although the embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art will understand that the present invention can be embodied in other specific forms without changing the technical spirit or essential features of the present invention. Therefore, the above-described embodiments should be understood as illustrative and not restrictive in all respects.

Claims

1. A handpiece, A cartridge housing; an ultrasonic generating unit including a transducer provided in the cartridge housing and connected to a moving shaft extending from the handpiece to generate ultrasonic waves; A variable shaft connected to the ultrasonic generating unit and movable in the vertical direction of the transducer; an operation unit that moves the variable shaft in the up and down direction, The movement axis is An ultrasonic generator capable of adjusting the focal depth of ultrasonic waves, characterized in that the variable shaft is movable in an axial direction thereof, the variable shaft extends in a direction perpendicular to the up-down direction of the transducer, and the variable shaft is extendable and contractible in the axial direction thereof by the variable shaft.

2. The variable axis is 2. The ultrasonic generator according to claim 1, further comprising one or more shafts having different diameters and capable of being inserted and removed in multiple stages.

3. a guide portion provided in the cartridge housing for guiding the ultrasonic generating unit so as to be movable in the vertical direction and in the axial direction of the variable shaft, The guide portion is 2. The ultrasonic generator capable of adjusting the focused depth of ultrasonic waves according to claim 1, further comprising a guide shaft penetrating said ultrasonic generating unit.

4. The guide portion is 4. The ultrasonic generating device according to claim 3, further comprising at least one elastic member provided in the ultrasonic generating unit.

5. A first magnetic member provided in the ultrasonic generating unit; 2. The ultrasonic generator according to claim 1, further comprising a second magnetic member provided on the moving shaft and magnetically coupled to the first magnetic member.

6. The operation unit includes:

2. The ultrasonic generator capable of adjusting the ultrasonic focusing depth according to claim 1, wherein the driving means is a button or a knob.

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