Multi-channel vibrator and ultrasonic device comprising same

Abstract

This vibrator generates ultrasonic waves and has a gradual dome-shape, the vibrator comprising a plurality of ring-shaped electrode channels, having different diameters, which are positioned on one surface of the vibrator such that the centers of the electrode channels coincide with an axis. Each electrode channel has a current connection part for receiving an electrical signal, and some electrode channels include an extension part extending to the outside of the vibrator. The extension parts are provided to facilitate wire connection by ensuring the area of the current connection part.

Description

Multichannel transducer and ultrasonic device including the same

[0001] The present invention relates to a multi-channel vibrator and an ultrasonic device including the same, and more specifically, to a multi-channel vibrator having an extension portion that facilitates wire connection to an electrode channel having a narrow area.

[0002] As interest in appearance grows day by day, there is an increasing number of people regularly managing their skin not only through cosmetics but also through dermatology clinics and beauty salons. However, visiting a dermatologist or beauty salon for skin care can be expensive, placing an economic burden on consumers. To address this issue, self-care devices that allow for easier skin management have recently been emerging.

[0003] In the past, portable skin care devices were rarely available, but with the advancement of wireless communication and the miniaturization of components, portable skin care devices are becoming widely commercialized.

[0004] These skin beauty devices can be implemented in various ways, and among them, devices utilizing ultrasound are attracting attention. Ultrasound can stimulate skin cells by applying micro-stimulation to the skin, thereby bringing about skin improvement effects such as wrinkle reduction and whitening.

[0005] Furthermore, ultrasonic vibrations can assist in the absorption of cosmetics applied to the skin, thereby maximizing their performance. Moreover, ultrasound can also perform the function of massaging the skin to relax muscles and increase skin elasticity.

[0006] The ultrasonic transducer, a core component of the ultrasonic device, is designed to emit ultrasound through channels and focus it on desired locations. Furthermore, multi-channel ultrasonic transducers generate ultrasound independently in each channel and can increase ultrasound concentration by adjusting the levels of the main and side lobes, thereby enabling more precise skin care.

[0007] However, conventional multi-channel ultrasonic transducers had a structure in which the channel width narrowed toward the outer edges, which caused a problem in connecting wires.

[0008] In particular, disadvantages occurred during the process of connecting wires to electrodes with a narrow surface area, such as inefficient electrical signal transmission or increased complexity in the manufacturing process.

[0009] To solve these problems, a new structure of multi-channel ultrasonic transducer is required that enables more efficient wire connection while providing stable ultrasonic performance.

[0010] To solve the problem described above, the present invention aims to provide a multi-channel vibrator having an extension that facilitates wire connection to the electrode channel.

[0011] In addition, it aims to provide a multi-channel vibrator that can be directly connected to a PCB.

[0012] The problems to be solved by the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art to which the present invention belongs from the description below.

[0013] In a gentle dome-shaped vibrator that generates ultrasound, the plurality of ring-shaped electrode channels are located on one surface of the vibrator and are spaced apart from each other with different diameters, while substantially coinciding with the axis and center of the gentle dome shape; each electrode channel of the plurality of electrode channels has a current connection part to which one end of a wire is connected to input an electrical signal to each electrode channel, and at least one electrode channel among the plurality of electrode channels may include an extension part formed such that a certain portion extends to the outer edge of the vibrator and the current connection part is located thereon.

[0014] The above plurality of electrode channels may have substantially the same area for each electrode channel.

[0015] The width of the above-mentioned extension may be wider than the channel width of at least one electrode channel.

[0016] The above at least one electrode channel may include an electrode channel located relatively outer among the plurality of electrode channels.

[0017] All of the above extensions may have a shape that extends in the first direction.

[0018] A hole penetrating the center around the above axis may be further provided.

[0019] The plurality of electrode channels may further include a circular electrode channel located on one surface of the vibrator and positioned at the center with respect to the axis.

[0020] Each of the above multiple electrode channels may have the above extension portion.

[0021] The above extension may include a protruding extension formed by extending further outward from the outer edge of the vibrator and where the current connection part is located.

[0022] All of the above-mentioned protruding extensions are formed to protrude in the direction in which the vibrator and the circuit board come into contact, and the current connection portion substantially contacts the circuit board, thereby allowing the electrode channel to be electrically connected to the circuit board.

[0023] Each electrode channel of the plurality of electrode channels can receive a different electrical signal to move the vibration focus of the ultrasound.

[0024] Another embodiment of the present invention is an ultrasonic device comprising: a body including a grip portion that a user holds and a head portion located at the end of the grip portion; an ultrasonic generating portion located at the end of the head portion; a vibrator that provides vibration to the ultrasonic generating portion; and a control portion that supplies and controls current to the vibrator, wherein the vibrator has a gentle dome shape and includes a plurality of ring-shaped electrode channels located on one surface of the vibrator, which are spaced apart from each other and whose axis and center substantially coincide with that of the gentle dome shape, and each electrode channel of the plurality of electrode channels has a current connection portion to which one end of a wire that inputs an electrical signal to each electrode channel is connected, and at least one electrode channel among the plurality of electrode channels is formed such that a certain portion extends to the outer edge of the vibrator and includes an extension portion where the current connection portion is located.

[0025] The above plurality of electrode channels may have substantially the same area for each electrode channel.

[0026] The width of the above-mentioned extension may be wider than the channel width of at least one electrode channel.

[0027] The above at least one electrode channel may include an electrode channel located relatively outer among the plurality of electrode channels.

[0028] All of the above extensions may have a shape that extends in the first direction.

[0029] A hole penetrating the center around the above axis may be further provided.

[0030] The plurality of electrode channels may further include a circular electrode channel located on one surface of the vibrator and positioned at the center with respect to the axis.

[0031] Each of the above multiple electrode channels may have the above extension portion.

[0032] The above extension may include a protruding extension formed by extending further outward from the outer edge of the vibrator and where the current connection part is located.

[0033] All of the above-mentioned protruding extensions are formed to protrude in the direction in which the vibrator and the circuit board come into contact, and the current connection portion substantially contacts the circuit board, thereby allowing the electrode channel to be electrically connected to the circuit board.

[0034] Each electrode channel of the plurality of electrode channels can receive a different electrical signal to move the vibration focus of the ultrasound.

[0035] According to one embodiment of the present invention, by simplifying the input electrical signal, it is possible to stably provide an electrical signal input while maintaining the efficiency of the focus-variable ultrasonic transducer.

[0036] In addition, according to one embodiment of the present invention, by securing an area for the current connection portion, the connection process of the wire and connector can be simplified during the manufacturing process.

[0037] In addition, by reducing the complexity of the manufacturing process and improving the durability of the connections, the product defect rate can be lowered.

[0038] In addition, by protruding the current connection part so that most of the channel maintains a ring shape, excellent product performance can be maintained without degrading existing ultrasonic performance.

[0039] Further scopes of the applicability of the present invention will become apparent from the following detailed description. However, since various changes and modifications within the spirit and scope of the present invention are clearly understood by those skilled in the art, specific embodiments, such as the detailed description and preferred embodiments of the present invention, should be understood as being given merely as examples.

[0040] FIG. 1 is a drawing showing an ultrasonic device according to one embodiment of the present invention.

[0041] FIG. 2 is a diagram illustrating the focus variation of a vibrator according to one embodiment of the present invention.

[0042] FIG. 3 is a drawing for explaining the types of vibrators according to one embodiment of the present invention.

[0043] FIG. 4 is a drawing for explaining the configuration of a vibrator according to one embodiment of the present invention.

[0044] Figure 5 is a diagram showing an embodiment in which the vibrator of Figure 4 is connected to a wire.

[0045] FIG. 6 is a drawing for explaining a vibrator according to another embodiment of the present invention.

[0046] FIG. 7 is a drawing for explaining a vibrator according to another embodiment of the present invention.

[0047] FIG. 8 is a drawing for explaining a vibrator according to another embodiment of the present invention.

[0048] Figure 9 is a diagram showing an embodiment in which the vibrator of Figure 8 is connected to a PCB.

[0049] Hereinafter, embodiments disclosed in this specification will be described in detail with reference to the attached drawings. Identical or similar components regardless of drawing symbols are given the same reference number, and redundant descriptions thereof will be omitted.

[0050] The suffixes "module" and "part" for components used in the following description are assigned or used interchangeably solely for the sake of ease of drafting the specification, and do not inherently possess distinct meanings or roles. Furthermore, in describing the embodiments disclosed in this specification, detailed descriptions of related prior art are omitted if it is determined that such detailed descriptions could obscure the essence of the embodiments disclosed in this specification.

[0051] In addition, the attached drawings are intended only to facilitate understanding of the embodiments disclosed in this specification, and the technical concept disclosed in this specification is not limited by the attached drawings; it should be understood that all modifications, equivalents, and substitutions included within the concept and technical scope of the present invention are included.

[0052] Terms including ordinal numbers, such as first, second, etc., may be used to describe various components, but said components are not limited by said terms. These terms are used solely for the purpose of distinguishing one component from another.

[0053] When it is stated that one component is "connected" or "connected" to another component, it should be understood that while it may be directly connected or connected to that other component, there may also be other components in between. On the other hand, when it is stated that one component is "directly connected" or "directly connected" to another component, it should be understood that there are no other components in between.

[0054] A singular expression includes a plural expression unless the context clearly indicates otherwise.

[0055] In this application, terms such as “comprising” or “having” are intended to specify the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0056] Devices for skin care are implemented through various methods. When the skin receives subtle stimuli, it causes changes in cellular activity, which can lead to skin improvement effects such as wrinkle reduction and whitening.

[0057] Representative forms include the non-invasive method, which applies electrical stimulation to the skin, and the invasive method, which applies physical stimulation.

[0058] Previously, portable devices were not widely available, but recently, with the development of wireless communication and the miniaturization of components, portable care devices are becoming widely commercialized.

[0059] FIG. 1 is a drawing showing an ultrasonic device (1000) according to one embodiment of the present invention. As one embodiment, it may include an ultrasonic skin care device that acts on the deep and surface of human skin.

[0060] The ultrasonic device (1000) of the present invention may include a grip portion (100) that a user holds with their hand, a head portion (200) located at the end of the grip portion (100), an ultrasonic generating portion (300) located at the end of the head portion (200), and a vibrator (400) that provides vibration to generate ultrasonic waves.

[0061] The grip portion (100) may include a space inside which a battery is accommodated as a power supply unit and a printed circuit board (not shown) as a control unit, and may be provided on the outside with an operating unit (not shown) for turning the power on / off and operating. Additionally, it may include a display unit (not shown) for displaying the current operating status. The display unit (not shown) may include one of a method of simply displaying by the color of a lamp or a method of displaying by characters or symbols, such as a liquid crystal display.

[0062] The grip portion (100) may include a power connection portion (not shown) for connecting an external power source. The power connection portion (not shown) may adopt a method of supplying power at all times when there is no battery, and may charge the battery when a battery is provided. Charging may be performed by connecting to a charger that receives external power through a terminal, or by using a wireless charging method.

[0063] The grip portion (100) and the head portion (200) can form an angle of 90° or more and 180° or less so that it is comfortable for the user to apply force to the ultrasonic generating portion (300) to touch their face.

[0064] The ultrasonic generating unit (300) may include a housing (not shown) in which a wire, connector, or circuit board (not shown) connected to the vibrator (400) is mounted. It may also form a part that comes into contact with the user's face.

[0065] Hereinafter, the direction in which the focus (P) exists relative to the vibrator (400) will be referred to as the lower side, and the opposite direction as the upper side.

[0066] The vibrator (400) can function to generate ultrasound by receiving an electrical signal and vibrating. The vibrator (400) can be positioned close to the lower side of the ultrasound generating unit (300). Accordingly, the focal point (P) where the ultrasound generated by the vibrator (400) is concentrated can be located outside the ultrasound generating unit (300). By adjusting the point where the focal point (P) is located outside the ultrasound generating unit (300) in this way, the subcutaneous tissue or fascia, which is the lower part of the skin in contact with the ultrasound generating unit (300), can be stimulated.

[0067] Referring to FIG. 1, the vibrator (400) may have a gentle dome shape. Hereinafter, the vibrator (400) will be described in detail with reference to FIG. 2.

[0068] FIG. 2 is a drawing for explaining the focus variation of a vibrator (400) according to one embodiment of the present invention. FIG. 2(a) is a perspective view of a gently dome-shaped vibrator viewed from above, and FIG. 2(b) is a schematic representation of the BB cross-section of FIG. 2(a), and is a drawing for explaining the focus variation.

[0069] A vibrator according to one embodiment of the present invention may be a focus-variable ultrasonic vibrator. Generally, the ultrasonic vibrator is a fixed-focus focused ultrasonic (HIFU) vibrator and may be formed in a gentle dome shape, and the electrode is positioned entirely on the upper surface (410) which can be viewed as the outer surface of the gentle dome shape or the lower surface (420) which can be viewed as the inner surface of the dome shape.

[0070] When generating ultrasound by inputting an electrical signal to the electrode with such a configuration, the focus of the ultrasound is affected by the dome shape and has the characteristic of being fixed at a specific point.

[0071] On the other hand, referring to FIG. 2(a), the focus-variable ultrasonic transducer according to one embodiment of the present invention may have the electrodes on the upper surface (410) or lower surface (420) divided into a plurality of ring-shaped electrode channels (430). That is, it may include a plurality of ring-shaped electrode channels that are spaced apart from each other and have different diameters, while the axis and center of the gentle dome shape substantially coincide.

[0072] In FIG. 2(a), an example is shown in which the electrodes on the upper surface (410) are divided, but this is not limited thereto, and it is sufficient for the multiple electrode channels (430) forming the electrodes to be located on only one of the upper surface (410) or the lower surface (420). Also, FIG. 2(a) shows an example divided into 7 sections, but the number of electrode channels is not limited thereto and may be fewer or more.

[0073] In this way, by including multiple electrode channels, the position of the focus (P) can be adjusted by adjusting the electrical signal input to each channel. This will be further explained below with reference to FIG. 2(b).

[0074] FIG. 2(b) shows a cross-section of a vibrator (400), showing the positions of the upper surface (410) and lower surface (420) of the vibrator. The vibrator has a dome-shaped structure, and this structure can affect the focal position of the ultrasound generated from the vibrator.

[0075] The focus (P) indicates the location where the ultrasonic waves generated by the transducer converge. The focus is located in the direction where the curved surface of the transducer faces inward, and this location can be influenced by the curvature of the transducer and the input electrical signal.

[0076] A vibrator according to one embodiment of the present invention is a focus-variable ultrasonic vibrator, and can move the focus of the ultrasound by inputting different electrical signals to each of the plurality of electrode channels (430). Referring to FIG. 2(b), the focus (P) can be moved in the up-and-down direction (d), and this can be adjusted according to the electrical signals input to each of the plurality of electrode channels (430).

[0077]

[0078] FIG. 3 is a diagram illustrating the types of vibrators according to an embodiment of the present invention. FIG. 3 (a) illustrates a width-identical electrode channel in which the width of each channel is the same, and FIG. 3 (b) illustrates a width-identical electrode channel in which the width of each channel is the same.

[0079] As described above, one electrode of the transducer may have multiple electrode channels. To generate ultrasound, an electrical signal having a waveform such as a sine wave or a square wave must be input to each electrode channel. In this case, to match the energy generated in each channel to a similar level, it may be required that the width or width of each channel be the same.

[0080] Referring to FIG. 3 (a), in the case of a width-identical electrode channel, the second to seventh channels (431b~g), excluding the first channel (431a) located in the center, may have a ring shape with the same width (r). In this case, the area occupied by each channel is different, and the outer channels occupy a larger area. Therefore, in order to concentrate the entire ultrasonic wave generated from the transducer and gather it to a focal point, the amplitude of the waveform of the electrical signal input to each channel must be set differently.

[0081] Therefore, in the case of width-identical electrode channels, the amplitude of the input signal must be set differently for each channel, so there may be difficulties in operating the vibrator.

[0082] On the other hand, since the width-identical electrode channels (432a~g) have the same width for all channels, including the central first channel (432a), even if the amplitude of the waveform of the electrical signal input to each channel is set equally, the focus of the ultrasound generated for each channel can be gathered at one point.

[0083] However, in such cases, the width of the channel becomes narrower as it approaches the outer channel in order to make the width equal. Therefore, in the case of the 5th to 7th electrode channels (431 e~g) located on the outer side, the width is narrower than the thickness of the wire connected to the channel or the area occupied by the solder for connection, so there was a disadvantage that connection was difficult.

[0084] Hereinafter, an electric motor according to an embodiment (first embodiment) of the present invention will be described with reference to FIGS. 4 and FIGS. 5. FIGS. 4 is a drawing for explaining the configuration of an electric motor according to an embodiment of the present invention. FIGS. 4 (a) is a perspective view of the electric motor, and FIGS. 4 (b) is a plan view of the electric motor. FIGS. 5 is a drawing showing an embodiment in which the electric motor of FIGS. 4 is connected to a wire. FIGS. 5 (a) is a perspective view of the electric motor with the wire connected, and FIGS. 5 (b) is a plan view of the electric motor with the wire connected.

[0085] Referring to FIGS. 4 and 5, the electric motor according to the first embodiment of the present invention may additionally include a hole (470). As described above, the electric motor has a gentle dome shape, and the hole (470) may further be provided with a hole penetrating vertically through the center, that is, the ceiling portion of the electric motor, centered on the axis of the dome shape. The hole (470) may serve as an idle space for other parts or devices.

[0086] The above-described electric motor (400) may include a plurality of ring-shaped electrode channels (430) forming concentric circles around the hole. That is, the plurality of electrode channels may be positioned with different diameters in a ring shape surrounding the hole. Additionally, the electrode channels may be width-equal electrode channels, with the width becoming thinner towards the outer edge.

[0087] At this time, at least one of the plurality of electrode channels may include an extension portion (450). The extension portion (450) is a portion formed by extending a certain part of the original ring-shaped electrode channel to the outer edge of the vibrator, and provides a space for current connection portions (443a~f).

[0088] The current connection parts (443a~f) are, for example, parts where a wire or connector is connected to transmit an electrical signal to the electrode channel (430). The wire is configured to transmit an electrical signal to the vibrator and may include other parts capable of performing such a role.

[0089] Wires or connectors are merely examples of configurations for transmitting electrical signals. Hereinafter, the present specification assumes that wires are connected.

[0090] The wire is generally secured to the current connection by soldering, and an electrical connection is established between the wire and the current connection (443a~f) through soldering. In this process, the soldered wire transmits current to the electrode, enabling the ultrasonic transducer to operate. Soldering is merely one example, and connections can be made in various ways.

[0091] At this time, the current connection portions (443a~f) may require a certain area or more to be stably connected to the wire. Therefore, in order to secure such a required area, if the current connection portion is located on the outer edge among the multiple electrode channels and does not have sufficient width, an extension portion (450) may be provided to position the current connection portion.

[0092] In FIG. 4, among the plurality of electrode channels, the first to third channels (433a~c) are shown as having a complete ring shape without an extension portion (450). This is because the channels located on the inner side may have sufficient width to secure the current connection portion (443a~c).

[0093] For example, in the case of the first to third channels (443a–c) illustrated in FIG. 4 (b), since they have a sufficient width, the current connection portions (443a–c) can be located at any position where they can be connected to each channel. The positions of the current connection portions (443a–c) illustrated in FIG. 4 (b) are merely examples and are not limited thereto.

[0094] On the other hand, in the case of channels located on the outer edge, for example, in the case of the 4th to 6th channels (433d~f) of FIG. 4 (b), the ring portion may not have sufficient width to position the current connection portion (433d~f). Therefore, by providing an extension portion (450) that extends outward in part and positioning the current connection portion (443d~f) in the extension portion, the area of ​​the current connection portion can be reliably secured.

[0095] To fulfill this role, the extension (450) may have a width wider than the width of the electrode channel having the extension. In this case, the width of the extension is sufficient if it is sufficient to secure the area of ​​the current connection portion. Although some channels may not form a perfect ring shape due to the formation of the extension, the effect on ultrasonic performance is minimal and does not degrade the performance of the transducer. Therefore, the formation of the extension allows for stable current connection without significantly affecting ultrasonic performance.

[0096] In addition, since the need for the expansion is high when the width of the ring portion is narrow, electrode channels located on the outer edge, as shown in Fig. 4, can be mainly provided.

[0097] In addition, as shown in FIGS. 4 and 5, the extensions may all have a shape that extends toward a first direction (downward in the drawings) in the case of electrode channels having extensions. By extending in a gathered state in the same direction in this way, the wire connection process and maintenance can be made easier (see FIG. 5).

[0098] Referring to FIG. 4 and FIG. 5 together, wires (500a~f) can be connected to current connection parts (443a~f). At this time, it is preferable that one wire be connected to each electrode channel, and each wire can input an electrical signal to generate ultrasound to each electrode channel. The electrical signal input at this time may be the same or different.

[0099] As such, the vibrator according to one embodiment of the present invention is provided with an extension part, thereby enabling stable connection of wires and thus stable provision of the input of the vibration signal. In addition, the connection process can be simplified during the manufacturing process, and the occurrence rate of defective products, such as wires falling off, can be significantly reduced by securing a sufficient attachment area.

[0100] FIG. 6 is a drawing for explaining a vibrator according to another embodiment (second embodiment) of the present invention. FIG. 6 (a) is a perspective view of the motor, and FIG. 6 (b) is a plan view of the motor.

[0101] The vibrator according to the second embodiment of the present invention may have a complete dome shape. Referring to FIG. 6, the vibrator according to the second embodiment may further include a circular electrode channel, for example, a first electrode channel (434a), located on one side of the vibrator and centered on the axis.

[0102] At this time, the first to seventh electrode channels (434a~g) may each have the same width, including the central first electrode channel.

[0103] The vibrator according to the second embodiment may also have an extension part (450) as described above in FIGS. 4 and 5. As the extension part (450) has been described in detail in FIGS. 4 and 5, a description thereof will be omitted here.

[0104] Referring to FIG. 6 (b), the first to fourth electrode channels (434a~d) located on the inside do not have an extension and have a sufficiently wide width, so the current connection portion (444a~d) is located in the electrode channel and the wire can be directly connected.

[0105] On the other hand, in the case of the 5th to 7th electrode channels (434e~g) located on the outer edge, the width is narrow, making it difficult to position the current connection part, so an extension part is provided to position the current connection part (444e~g).

[0106] FIG. 7 is a drawing for illustrating a vibrator according to another embodiment (third embodiment) of the present invention. FIG. 7 (a) is a perspective view of the motor, and FIG. 7 (b) is a plan view of the motor.

[0107] The electric motor according to the third embodiment may have a form in which all electrode channels (435a~f) each have an extension (450). As the extension (450) has been described in detail in FIGS. 4 and FIGS. 5, a description thereof will be omitted here.

[0108] In the case where each electrode channel is equipped with an extension (450), the extensions can also all be positioned facing in one direction, and as a result, they can be gathered in an overlapping form as shown in the drawing.

[0109] This arrangement allows the current connection parts (445a~f) to also be located adjacently, making it easier to handle the wire connection process or management.

[0110] Hereinafter, another embodiment (fourth embodiment) of the present invention will be described with reference to FIGS. 8 and FIGS. 9.

[0111] FIG. 8 is a drawing for explaining a vibrator according to another embodiment of the present invention. FIG. 8 (a) is a perspective view of the vibrator, and FIG. 8 (b) is a plan view of the vibrator. FIG. 9 is a drawing showing an embodiment in which the vibrator of FIG. 8 is connected to a PCB. FIG. 9 (a) is a perspective view, and FIG. 9 (b) is a plan view.

[0112] Referring to FIG. 8, the electric motor according to the fourth embodiment may include an extension portion (450) for each of the electrode channels (436a~f) as in the third embodiment, and may further include a protruding extension portion (460) formed by extending further outward from the outer edge of the vibrator at each extension portion and where the current connection portion is located.

[0113] In other words, the extension portion (450) of each electrode channel may include a protruding extension portion (460) that extends in the same direction as the vibrator and protrudes outward from the dome shape, and current connection portions (446a~f) may be located on the protruding extension portion (460).

[0114] Due to this structure, wire connection can be made more convenient, and it is also possible to connect a PCB (printed circuit board) (600) directly to the protruding extension (460).

[0115] FIG. 9 is a drawing showing an embodiment in which the vibrator (400) described in FIG. 8 is connected to a PCB (printed circuit board) (600). FIG. 9(a) is a perspective view, and FIG. 9(b) is a plan view.

[0116] Referring to FIG. 9, the protruding extension (460) of the vibrator (400) is positioned close to the PCB (600), and as a result, the current connection portions (446a~f) formed in the protruding extension portion can be directly connected to the circuit of the PCB. The connection with the PCB allows electrical signals to be stably transmitted through the current connection portions, thereby supplying signals to each electrode channel.

[0117] The current connection portions (446a–f) can be electrically connected to the PCB via soldering or a connector (610). Soldering facilitates the transmission of electrical signals through direct metal-to-metal connection and can provide a strong mechanical bond. On the other hand, the connector provides a detachable connection between the PCB and the vibrator, making maintenance and replacement easier.

[0118] In FIG. 9(b), the protruding extension (460) connected to each electrode channel (436a~f) is specifically shown in contact with the circuit on the PCB. Through this configuration, an electrical signal is stably transmitted to each electrode channel, and the electrical input required for ultrasonic generation is provided.

[0119] By using the protruding extension (460), the current connection part can be in direct contact with the PCB, thereby simplifying the circuit design and reducing instability that may occur during the wire connection process. This simplifies the manufacturing process and improves the durability of the product.

[0120] The embodiments described above are merely examples, and it is obvious to those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit and essential features of the invention.

[0121] The foregoing detailed description should not be interpreted restrictively in all respects and should be considered exemplary. The scope of the invention shall be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the invention are included within the scope of the invention.

Claims

In a gently dome-shaped vibrator that generates ultrasound, It includes a plurality of ring-shaped electrode channels located on one surface of the above-mentioned vibrator, which substantially coincide with the center of the gentle dome-shaped axis but are spaced apart from each other due to different diameters, Each electrode channel of the plurality of electrode channels above is A current connection part is provided, to which one end of each wire inputting an electrical signal to each of the above electrode channels is connected, and At least one electrode channel among the plurality of electrode channels is A multi-channel vibrator characterized by including an extension portion formed by extending a certain portion to the outer edge of the vibrator and having a current connection portion located thereon. In paragraph 1, A multichannel vibrator characterized in that the area of ​​each electrode channel is substantially the same for the plurality of electrode channels. In paragraph 1, The width of the above extension is A multichannel vibrator characterized by being wider than the channel width of at least one electrode channel. In paragraph 1, The above at least one electrode channel is A multichannel vibrator characterized by including an electrode channel located relatively outer among the plurality of electrode channels. In paragraph 1, A multichannel vibrator characterized in that all of the above-mentioned extensions have a shape extending in a first direction. In paragraph 1, A multi-channel vibrator characterized by having a hole penetrating the center centered on the above-mentioned axis. In paragraph 1, The above plurality of electrode channels are A multi-channel vibrator characterized by further including a circular electrode channel located on one surface of the vibrator and centered on the axis. In paragraph 1, A multichannel vibrator characterized in that all electrode channels of the plurality of electrode channels each have the expansion portion. In paragraph 1, The above extension A multi-channel vibrator characterized by including a protruding extension formed extending further outward from the outer edge of the vibrator and having a current connection portion located thereon. In Paragraph 9, All of the above-mentioned protruding extensions are formed to protrude in the direction in which the vibrator and the circuit board come into contact, and A multi-channel vibrator characterized in that the electrode channel is electrically connected to the circuit board by the current connection portion substantially contacting the circuit board. In paragraph 1, Each electrode channel of the plurality of electrode channels above is A multi-channel transducer characterized by receiving different electrical signals to move the vibration focus of the ultrasound. A body comprising a grip portion that a user holds and a head portion located at the end of the grip portion; Ultrasonic generating unit located at the end of the head portion above; A vibrator that provides vibration to the above-mentioned ultrasonic generating unit; It includes a control unit that supplies and controls current to the above-mentioned vibrator, and The above vibrator It has a gentle dome shape, It includes a plurality of ring-shaped electrode channels located on one surface of the above-mentioned vibrator, which substantially coincide with the center of the gentle dome-shaped axis but are spaced apart from each other due to different diameters, Each electrode channel of the plurality of electrode channels is provided with a current connection part to which one end of each wire is connected to input an electrical signal to each of the electrode channels, and An ultrasonic device characterized in that at least one of the plurality of electrode channels is formed such that a certain portion extends to the outer edge of the vibrator and includes an extension portion where the current connection portion is located. In Paragraph 12, Each electrode channel of the plurality of electrode channels above is An ultrasonic device characterized by receiving different electrical signals with substantially identical areas to move the vibration focus of the ultrasonic waves. In Paragraph 12, The width of the above extension is Ultrasonic device characterized by being wider than the channel width of at least one electrode channel. In Paragraph 12, The above at least one electrode channel is An ultrasonic device characterized by including an electrode channel located relatively outer among the plurality of electrode channels. In Paragraph 12, An ultrasonic device characterized in that all of the above-mentioned extensions have a shape extending in a first direction. In Paragraph 12, An ultrasonic device characterized by further having a hole penetrating the center around the above-mentioned axis. In Paragraph 12, The above plurality of electrode channels are An ultrasonic device characterized by further including a circular electrode channel located on one surface of the above-mentioned vibrator and centered on the above-mentioned axis. In Paragraph 12, An ultrasonic device characterized in that all electrode channels of the plurality of electrode channels each have the expansion portion. In Paragraph 12, The above extension It includes a protruding extension formed extending further outward from the outer edge of the above vibrator and having the current connection portion located thereon, All of the above-mentioned protruding extensions are formed to protrude in the direction where the vibrator and the circuit board come into contact, and An ultrasonic device characterized in that the electrode channel is electrically connected to the circuit board by the current connection portion substantially contacting the circuit board.

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