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

Abstract

The present invention relates to an ultrasonic generating device capable of adjusting the depth of ultrasonic focusing, comprising: a handpiece; a cartridge housing detachable from the handpiece; an ultrasonic generating unit provided in the cartridge housing and including a transducer that generates ultrasonic waves; a moving shaft provided to be movable in an axial direction and in the vertical direction of the ultrasonic generating unit; and a guide portion provided in the cartridge housing for guiding the ultrasonic generating unit to be movable in the vertical direction and in the axial direction of the moving shaft, wherein the guide portion includes a guide shaft that penetrates the ultrasonic generating unit.

Description

[Technical field]

[0001] The present invention relates to an ultrasonic generator capable of adjusting the focused depth of ultrasonic waves, the ultrasonic generator having a handpiece and a cartridge housing detachably coupled to the handpiece for generating 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, since the ultrasonic generating unit is fixed inside the cartridge housing, it is difficult to adjust the focal depth of the ultrasonic waves of the ultrasonic generating unit.

[0006] In recent years, developments have been made in which the focal depth of the ultrasound generating unit can be adjusted using a single cartridge by moving the ultrasound generating unit and without replacing the cartridge. However, there is a problem in that it is difficult to uniformly irradiate ultrasound to the target depth of the skin because it is difficult to keep the ultrasound generating unit horizontal after moving it to the target focal depth. 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 generating device that can easily adjust the focal depth of ultrasonic waves according to a target depth of the skin.

[0008] Another object of the present invention is to provide an ultrasonic generator capable of uniformly irradiating ultrasonic waves according to a target depth of the skin.

[0009] 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]

[0010] In order to solve the above-mentioned problems, one embodiment of the present invention provides an ultrasonic generator capable of adjusting the focused depth of ultrasonic waves, comprising a handpiece, a cartridge housing detachable from the handpiece, an ultrasonic generating unit provided in the cartridge housing and including a transducer that generates ultrasonic waves, a moving shaft provided to be movable in an axial direction and in a vertical direction of the transducer, and a guide portion provided in the cartridge housing for guiding the ultrasonic generating unit to be movable in the vertical direction and in the axial direction of the moving shaft, wherein the guide portion includes a guide shaft penetrating the ultrasonic generating unit.

[0011] The guide portion may further include at least one elastic member provided on the ultrasonic generating unit.

[0012] Furthermore, the device may further include one or more elastic members that elastically support the guide shaft.

[0013] In addition, the ultrasonic generating unit may include a mount to which the moving shaft is detachably connected, and a fixing hole may be formed in one of the moving shaft and the mount, and a fixing protrusion may be formed in the other of the moving shaft and the mount, the fixing protrusion being detachably connected to the fixing hole.

[0014] Further, a tapered portion may be formed on one side of the fixing hole into which the fixing protrusion is inserted, the inner diameter of which decreases in a direction toward which the fixing protrusion is inserted.

[0015] The mounter may further include a first tube and a second tube that are extendable and contractible on both sides of the axial direction of the moving shaft.

[0016] The magnetic head may further include a first magnetic member provided in the fixing hole, and a second magnetic member provided in the fixing protrusion and magnetically coupled to the first magnetic member.

[0017] According to another embodiment of the present invention, an ultrasonic generator capable of adjusting the focused depth of ultrasonic waves includes a handpiece, a cartridge housing detachable from the handpiece, an ultrasonic generating unit provided in the cartridge housing and including a transducer that generates ultrasonic waves, a variable shaft connected to the ultrasonic generating unit and provided so as to be movable in the vertical direction of the transducer and extendable and contractible in the axial direction, and an operating unit that moves the variable shaft in the vertical direction.

[0018] The actuator may further include a moving shaft that is movable in the axial direction of the variable shaft.

[0019] Further, the cartridge housing may include a guide portion that guides the ultrasonic generating unit to move in the vertical direction and in the axial direction of the variable shaft, and the guide portion may include a guide shaft that passes through the ultrasonic generating unit.

[0020] The guide portion may further include at least one elastic member provided on the ultrasonic generating unit.

[0021] Furthermore, the elastic members are disposed opposite each other with the guide shaft therebetween, and can elastically support the guide shaft.

[0022] The variable shaft may include one or more shafts having different diameters and capable of being inserted and removed in multiple stages.

[0023] Further details of the invention are contained in the detailed description and the drawings. Effect of the Invention

[0024] The ultrasound generating device capable of adjusting the focused depth of ultrasound according to an embodiment of the present invention can easily adjust the focused depth of ultrasound according to a target depth of the skin.

[0025] In addition, in the ultrasonic generator capable of adjusting the ultrasonic focal depth according to one embodiment of the present invention, a pair of elastic members elastically support the guide shaft inserted into the ultrasonic generating unit, thereby preventing the ultrasonic generating unit from rotating when the ultrasonic generating unit moves up and down, and allowing the ultrasonic generating unit to smoothly maintain a horizontal position at a target focal depth.

[0026] 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]

[0027] [Figure 1] 1 is a perspective view showing an ultrasonic generator capable of adjusting the focused depth of ultrasonic waves according to an embodiment of the present invention; [Diagram 2] 1 is a cross-sectional view showing a connector of an ultrasonic generator capable of adjusting the focused depth of ultrasonic waves according to an 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. 11 is a perspective view showing an ultrasonic generator capable of adjusting the focused depth of ultrasonic waves according to another embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0028] 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.

[0029] 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.

[0030] 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.

[0031] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0032] FIG. 1 is a perspective view showing an ultrasonic generator capable of adjusting the focused depth of ultrasonic waves according to one embodiment of the present invention, and FIG. 2 is a cross-sectional view showing a connector of an ultrasonic generator capable of adjusting the focused depth of ultrasonic waves according to one embodiment of the present invention.

[0033] As shown in FIG. 1, an ultrasonic generator capable of adjusting the ultrasonic focused depth according to one embodiment of the present invention may include a handpiece 10, a cartridge housing 20, an ultrasonic generating unit 30, a moving axis 40 and a guide unit 50.

[0034] Here, the handpiece 10 and the cartridge housing 20 are the basic body, the ultrasonic generating unit 30 plays a role of generating ultrasonic waves, the moving shaft 40 plays a role of moving the ultrasonic generating unit 30 in the vertical direction of the transducer 32 and in the axial direction of the moving shaft 40, and the guide part 50 plays a role of guiding the ultrasonic generating unit 30 so as to be movable in the vertical direction of the transducer 32 and in the axial direction of the moving shaft 40. Here, the vertical direction of the transducer 32 can be defined as the direction in which the focal depth of the ultrasonic waves of the transducer 32 changes.

[0035] 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 that generates ultrasound is disposed inside the cartridge housing 20. Thus, a user can hold the handpiece 10 and perform an ultrasound medical treatment by irradiating ultrasound generated from the ultrasound generating unit 30 to a target depth of the skin while moving the handpiece 10 so that the cartridge housing 20 is in close contact with the surface of the skin.

[0036] A cable may be provided inside the handpiece 10, which is connected to an RF board for applying an RF current to the ultrasonic generating unit 30. The RF board may be housed in the handpiece 10, and may apply an RF current to the ultrasonic generating unit 30 intermittently or continuously.

[0037] The cartridge housing 20 is a type of case that houses the ultrasonic generating unit 30 and is detachably coupled to the handpiece 10 .

[0038] The cartridge housing 20 may accommodate a fluid medium for transmitting ultrasonic waves generated from the ultrasonic generating unit 30. Here, the fluid medium may be, but is not limited to, distilled water, degassed liquid, or silicone.

[0039] The ultrasonic generating unit 30 is provided in the cartridge housing 20 and includes a connector 31 and a transducer 32 .

[0040] The connector 31 is provided on the cartridge housing 20 , one side of the connector 31 is connected to the moving shaft 40 , and the other side of the connector 31 is connected to the transducer 32 .

[0041] The transducer 32 can focus ultrasound waves at a specific position by receiving an electric signal from the RF board via a cable of the handpiece 10. Here, the vertical direction of the transducer 32 may be the vertical direction based on the drawing. Here, the vertical distance from the end of the cartridge housing 20 to the specific position where the ultrasound waves are focused can be defined as the ultrasound focusing depth of the transducer 32. In this embodiment, the ultrasound focusing depth of the transducer 32 can be adjusted by moving the transducer 32 in the vertical direction, which will be described later.

[0042] The ultrasonic generating unit 30 can be detachably coupled to the cartridge housing 20. For example, the ultrasonic generating unit 30 can be screwed into the cartridge housing 20. Also, the ultrasonic generating unit 30 can be detachably coupled to the cartridge housing 20 through a protrusion and a groove.

[0043] The guide portion 50 may include a guide shaft 52 that passes through the ultrasonic generating unit 30 .

[0044] In addition, the ultrasonic generating unit 30 may be provided with one or more elastic members 60, which will be described later, for elastically supporting the inserted guide shaft 52.

[0045] The guide shaft 52 is provided in the cartridge housing 20 and inserted into the ultrasonic generating unit, and can guide the movement of the transducer 32 in the vertical direction and in the axial direction of the moving shaft 40. The guide shaft 52 can be arranged parallel to the moving shaft 40, but is not particularly limited to this.

[0046] One or more elastic members 60 may be provided on the ultrasonic generating unit 30 .

[0047] One or more elastic members 60 can elastically support the guide shaft 52. Specifically, one or more elastic members 60 can be provided in a pair, and the pair of elastic members 60 are arranged facing each other in the vertical direction across the bushing 70 to which the guide shaft 52 is slidably coupled, and can elastically support the bushing 70. A spring may be used as such an elastic member 60, but is not particularly limited thereto. In this way, the pair of elastic members 60 elastically support the ultrasonic generating unit 30, so that the ultrasonic generating unit 30 can be prevented from rotating when the ultrasonic generating unit 30 moves in the vertical direction.

[0048] The bushing 70 encases a specific portion of the guide shaft 52. Such a bushing 70 can slide along the axial direction of the guide shaft 52, and in conjunction with this, the connector 31 can also slide along the axial direction of the guide shaft 52. Meanwhile, the pair of elastic members 60 are arranged facing each other in the vertical direction with the bushing 70 in between, and can elastically support the bushing 70 arranged inside the connector 31 of the ultrasonic generating unit 30.

[0049] Here, in this embodiment, the bushing 70 is slidably coupled to the guide shaft 52, and the bushing 70 is elastically supported by the pair of elastic members 60, but this is not limiting, and the bushing 70 can be selectively provided. In this case, the connector 31 moves along the axial direction of the guide shaft 52, and the guide shaft 52 can be elastically supported by the pair of elastic members 60.

[0050] The moving shaft 40 is coupled to the ultrasonic generating unit 30 and can be provided to be movable in the axial direction and in the vertical direction of the transducer 32. The movement of the moving shaft 40 can be performed by a driving device. Here, the driving device can be a forward / reverse motor, a hydraulic motor, a pneumatic motor, an engine, or the like, but is not limited thereto, and any type of device that can supply a rotational torque to the moving shaft 40 can be used.

[0051] Meanwhile, the ultrasonic generating unit 30 may include a mount 33 to which the moving shaft 40 is detachably coupled. That is, the moving shaft 40 may be detachably coupled to the mount 33 provided on the connector 31 of the ultrasonic generating unit 30. Therefore, when the moving shaft 40 moves in the vertical direction of the transducer 32 and in the axial direction of the moving shaft 40, the mount 33 may also move in the vertical direction of the transducer 32 and in the axial direction of the moving shaft 40 in conjunction with the movement of the moving shaft 40.

[0052] Furthermore, a fixing hole 33a is formed in one of the moving shaft 40 and the mounter 33, and a fixing protrusion 41 that is detachably connected to the fixing hole 33a is formed in the other of the moving shaft 40 and the mounter 33, so that the moving shaft 40 and the mounter 33 can be detachably connected to each other.

[0053] 1, a fixing protrusion 41 may be formed at an end of the moving shaft 40, and a fixing hole 33a may be formed in the mounter 33. The fixing protrusion 41 of the moving shaft 40 may be detachably coupled to the fixing hole 33a of the mounter 33. Also, the fixing protrusion 41 may be disposed coaxially with the fixing hole 33a.

[0054] Meanwhile, a tapered portion 33b having an inner diameter that decreases in the direction toward which the fixing protrusion 41 is inserted may be formed on one side of the fixing hole 33a into which the fixing protrusion 41 is inserted. Therefore, when the fixing protrusion 41 is inserted into the fixing hole 33a, the tapered portion 33b serves to guide the fixing protrusion 41 into the fixing hole 33a. The tapered portion 33b also serves to correct the position of the fixing protrusion 41 until the fixing protrusion 41 is coaxially disposed in the fixing groove.

[0055] Furthermore, the fixing protrusion 41 and the fixing hole 33a can be separably coupled by the first magnetic member 100 and the second magnetic member 110.

[0056] Here, the first magnetic member 100 may be installed in the fixing hole 33a, and the second magnetic member 110 may be installed in the fixing protrusion 41 and magnetically coupled to the first magnetic member 100. The first magnetic member 100 has a polarity opposite to that of the second magnetic member 110, and the second magnetic member 110 also has a polarity opposite to that of the first magnetic member 100, so that the first magnetic member 100 and the second magnetic member 110 can be detachably coupled to each other.

[0057] Meanwhile, the ultrasonic generator capable of adjusting the ultrasonic focal depth according to one embodiment of the present invention may further include a first tube 80 and a second tube 90 that are extendable and scalable on both sides of the mounter 33 in the axial direction of the moving shaft 40.

[0058] The first tube 80 is disposed to surround the moving shaft 40, one end of the first tube 80 is supported on one side of the cartridge housing 20, and the other end of the first tube 80 may be crimped to one side of the mounter 33. A sealing member may be provided on a contact surface between the first tube 80 and the mounter 33, and the sealing member may play a role in ensuring airtightness to prevent a fluid medium from penetrating into the inside of the first tube 80.

[0059] One end of the second tube 90 may be crimped to the other side of the mounter 33, and the other end of the second tube 90 may be supported on the other side of the cartridge housing 20. A sealing member may be provided on a contact surface between the second tube 90 and the mounter 33, and the sealing member may play a role in ensuring airtightness to prevent the fluid medium from penetrating into the inside of the second tube 90.

[0060] The first tube 80 and the second tube 90 may have a circular or elliptical cross section, but are not particularly limited thereto.

[0061] Specifically, in the case of an elliptical shape, the transducer 32 may have an elliptical shape having a major axis whose length in the vertical direction is longer than the length in other directions. In this manner, the first tube 80 and the second tube 90 are formed in an elliptical shape, thereby ensuring the movement range of the moving shaft 40 when the moving shaft 40 moves in the vertical direction of the transducer 32, and also ensuring airtightness between the inside and outside of the cartridge housing 20.

[0062] In addition, the first pipe 80 and the second pipe 90 are each formed of a material having soft properties, such as urethane or silicone, thereby reducing the possibility of gaps occurring between the first pipe 80 and the second pipe 90 and preventing leakage of the medium, thereby ensuring greater reliability in airtightness.

[0063] 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.

[0064] 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.

[0065] 3, first, the driving device moves the moving shaft 40 downward. Of course, the moving shaft 40 can be manually moved downward by a user's operation.

[0066] Next, the ultrasonic generating unit 30 also moves downward in conjunction with the downward movement of the moving shaft 40. As a result, the focusing depth of the ultrasonic waves of the transducer 32 increases.

[0067] At this time, while the ultrasonic generating unit 30 moves in the vertical direction of the transducer 32, the pair of elastic members 60 elastically support the ultrasonic generating unit 30, thereby preventing the ultrasonic generating unit 30 from rotating.

[0068] Next, as shown in Fig. 4, the driving device moves the moving shaft 40 upward. Of course, the moving shaft 40 can be manually moved upward by a user's operation.

[0069] Next, in conjunction with the upward movement of the moving axis, the ultrasonic generating unit 30 also moves upward, resulting in a decrease in the focusing depth of the ultrasonic waves of the transducer 32.

[0070] At this time, while the ultrasonic generating unit 30 moves in the vertical direction of the transducer 32, the pair of elastic members 60 elastically support the ultrasonic generating unit 30, thereby preventing the ultrasonic generating unit 30 from rotating.

[0071] FIG. 5 is a perspective view showing an ultrasonic generator capable of adjusting the focused depth of ultrasonic waves according to another embodiment of the present invention.

[0072] 5, an ultrasonic generator capable of adjusting the ultrasonic focal depth according to another embodiment of the present invention further includes a variable shaft 120 and an operating unit 130, unlike the first embodiment of the present invention. Also, in this embodiment, the first magnetic member 100 and the second magnetic member 110 are replaced with a third magnetic member 140 and a fourth magnetic member 150, respectively.

[0073] The variable shaft 120 is connected to the ultrasonic generating unit 30, and is provided so as to be movable in the vertical direction of the transducer 32, and is extendable and contractible in the axial direction.

[0074] One end of the variable shaft 120 is connected to the connector 31 of the ultrasonic generating unit 30, and the other end of the variable shaft 120 is connected to the operation unit 130 described later. Therefore, when the operation unit 130 moves in the vertical direction of the transducer 32, both the ultrasonic generating unit 30 and the operation unit 130 can move in the vertical direction of the transducer 30.

[0075] The variable shaft 120 may include one or more shafts having different diameters and capable of multi-stage insertion and ejection.

[0076] The operating section 130 serves to move the variable shaft 120 in the vertical direction of the transducer 32. When the operating section 130 moves in the vertical direction of the transducer 32, the ultrasonic generating unit 30 also moves in the vertical direction of the transducer 32 in conjunction with the movement, so that the focal depth of the ultrasonic waves of the transducer 32 can be easily adjusted.

[0077] As an example, the operation unit 130 may be a driving means for driving the variable shaft 120 in the up and down directions of the transducer 32 .

[0078] As another example, the operating unit 130 may be a knob coupled to an end of the variable shaft 120. 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 130 may move along a rack gear formed to a certain length in the vertical direction on the outer surface of the cartridge housing 20. The operating unit 130 may be provided with a ratchet protrusion that is selectively engaged or disengaged with the rack gear.

[0079] In this embodiment, the variable shaft 120 is coupled to one surface of the connector 31 of the ultrasonic generating unit 30, and the moving shaft 40 is coupled to the other surface of the connector 31 of the ultrasonic generating unit 30.

[0080] In this embodiment, the moving shaft 40 is provided so as to be movable in the axial direction of the variable shaft 120 .

[0081] Therefore, when the moving shaft 40 moves in the axial direction of the variable shaft 120 , the ultrasonic generating unit 30 moves together with it in the axial direction of the variable shaft 120 , and the variable shaft 120 is expanded or contracted in the axial direction of the variable shaft 120 .

[0082] Meanwhile, the connector 31 of the ultrasonic generating unit 30 and the moving shaft 40 can be detachably coupled to each other via the third magnetic member 140 and the fourth magnetic member 150 .

[0083] The third magnetic member 140 may be provided in the connector 31 of the ultrasonic generating unit 30, facing the variable shaft 120. The third magnetic member 140 may have a length equal to or greater than the maximum movement distance of the variable shaft 120. Here, the maximum movement distance of the variable shaft 120 may be defined as the maximum distance that the variable shaft 120 can move from the cartridge housing 20 based on the vertical direction of the transducer 32.

[0084] The fourth magnetic member 150 may be provided on the moving shaft 40 and may be magnetically coupled to the third magnetic member 140. The fourth magnetic member 150 may have a length shorter than that of the third magnetic member 140 based on the vertical direction of the transducer 32.

[0085] As an example, the ultrasonic generating unit 30 can be moved in the vertical direction of the transducer 32 by operating the operating section 130, 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 120 by the moving shaft 40.

[0086] 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.

[0087] In addition, while the ultrasound generating unit 30 is moved by the moving axis 40 in a linear path in the axial direction of the variable axis 120, the transducer 32 is operated, and ultrasound generated from the transducer 32 can be provided along a linear path in the axial direction of the variable axis 120 from a target depth under the skin.

[0088] Meanwhile, the ultrasonic generating cartridge according to the present invention is detachably attached to the handpiece 10 and may include a cartridge housing 20 , an ultrasonic generating unit 30 , a moving shaft 40 , a guide portion 50 and an elastic member 60 .

[0089] Moreover, the ultrasonic generating cartridge according to the present invention may further include a bushing 70 , a first tube 80 and a second tube 90 .

[0090] According to the present invention, an ultrasonic generator capable of adjusting the focused depth of ultrasonic waves according to an embodiment of the present invention can easily adjust the focused depth of ultrasonic waves according to a target depth of the skin.

[0091] In addition, in the ultrasonic generator capable of adjusting the ultrasonic focal depth according to one embodiment of the present invention, a pair of elastic members elastically support the guide shaft inserted into the ultrasonic generating unit, thereby preventing the ultrasonic generating unit from rotating when the ultrasonic generating unit moves up and down, and allowing the ultrasonic generating unit to smoothly maintain a horizontal position at a target focal depth.

[0092] Although the embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains 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 to be illustrative in all respects and not restrictive.

Claims

1. A handpiece, a cartridge housing that is detachably attached to the handpiece; an ultrasonic generating unit provided in the cartridge housing and including a transducer for generating ultrasonic waves; a moving shaft that is movable in an axial direction of the moving shaft and in a vertical direction of the transducer; a guide portion provided in the cartridge housing and configured to guide the ultrasonic generating unit so as to be movable in the vertical direction and in the axial direction of the moving shaft, The guide portion is A guide shaft penetrating the ultrasonic generating unit, The ultrasonic generating unit includes: An ultrasonic generating device capable of adjusting the focused depth of ultrasonic waves, comprising at least one elastic member provided in the ultrasonic generating unit.

2. The elastic member is 2. The ultrasonic generator capable of adjusting the focused depth of ultrasonic waves according to claim 1, wherein the guide shaft is sandwiched between the first and second electrodes, and the first and second electrodes are disposed opposite each other with the guide shaft interposed therebetween and elastically support the guide shaft.

3. the ultrasonic generating unit includes a mount to which the moving shaft is detachably coupled, A fixing hole is formed in either the moving shaft or the mounter, 2. The ultrasonic generator according to claim 1, wherein the other of the moving shaft and the mount has a fixing protrusion that is detachably coupled to the fixing hole.

4. 4. The ultrasonic generator capable of adjusting the ultrasonic focusing depth according to claim 3, wherein a tapered portion is formed on one side of the fixing hole into which the fixing protrusion is inserted, the inner diameter of which decreases as the fixing protrusion is inserted.

5. 5. The ultrasonic generator according to claim 4, further comprising a first tube and a second tube, each of which is extendable and scalable on both sides of the mount.

6. A first magnetic member provided in the fixing hole; a second magnetic member provided on the fixed projection and magnetically coupled to the first magnetic member; 5. The ultrasonic generating device capable of adjusting the ultrasonic focusing depth according to claim 4, further comprising:

7. A handpiece, a cartridge housing that is detachably attached to the handpiece; an ultrasonic generating unit provided in the cartridge housing and including a transducer for generating ultrasonic waves; a variable shaft connected to the ultrasonic generating unit, movable in the vertical direction of the transducer, and extendable in an axial direction; an operation unit that moves the variable shaft in the up and down direction; and a movable shaft that is movable in an axial direction of the variable shaft.

8. 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 8. The ultrasonic generating device according to claim 7, further comprising a guide shaft penetrating the ultrasonic generating unit.

9. The ultrasonic generating unit comprises:

9. The ultrasonic generating device according to claim 8, further comprising at least one elastic member provided in the ultrasonic generating unit.

10. The elastic member is 10. The ultrasonic generator capable of adjusting the ultrasonic focal depth according to claim 9, wherein the guide shaft is sandwiched between the first and second electrodes, and the first and second electrodes are disposed opposite each other with the guide shaft interposed therebetween and elastically support the guide shaft.

11. A handpiece, a cartridge housing that is detachably attached to the handpiece; an ultrasonic generating unit provided in the cartridge housing and including a transducer for generating ultrasonic waves; a variable shaft connected to the ultrasonic generating unit, movable in the vertical direction of the transducer, and extendable in an axial direction; an operation unit that moves the variable shaft in the up and down direction, The ultrasonic generating unit includes: An ultrasonic generating device capable of adjusting the focused depth of ultrasonic waves, comprising at least one elastic member provided in the ultrasonic generating unit.

12. A guide portion is provided in the cartridge housing and guides the ultrasonic generating unit to be movable in the up-down direction and in the axial direction of the variable shaft, The guide portion is The ultrasonic generating device capable of adjusting the focused depth of ultrasonic waves according to claim 11, further comprising a guide shaft penetrating the ultrasonic generating unit.

13. The elastic member is 13. The ultrasonic generator capable of adjusting the ultrasonic focal depth according to claim 12, characterized in that the two actuators are disposed opposite each other with the guide shaft interposed therebetween and elastically support the guide shaft.

14. The variable axis is The ultrasonic generator capable of adjusting the ultrasonic focused depth according to any one of claims 7 to 13, characterized in that it includes one or more shafts having different diameters and capable of being inserted and removed in multiple stages.

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