Bonding structure for skin treatment cartridge

Abstract

The present invention relates to a skin treatment cartridge connection structure, which can be easily connected or disconnected using a ball plunger structure to a skin treatment cartridge connection object having an operating unit therein that comes into contact with the patient's skin to treat the patient's skin. This greatly improves convenience when replacing, cleaning, or disinfecting the skin treatment cartridge, and simplifies the electrical connection structure that electrically connects the skin treatment cartridge to the cartridge connection object, thereby reducing manufacturing costs.

Description

[Technical Field]

[0001] The present invention relates to a connection structure for a skin treatment cartridge, and more particularly to a connection structure for a skin treatment cartridge that ensures convenience when replacing skin treatment electrode cartridges that are replaced periodically. [Background technology]

[0002] In recent years, with the increasing interest in skin beauty, various skin treatment devices have been developed. Skin treatment devices have been proposed with various structures, such as skin treatment devices using ultrasound, skin treatment devices using lasers, and skin treatment devices using RF (radio frequency) electrodes. The skin treatment device using ultrasound includes an ultrasound treatment handpiece that comes into contact with the skin of a treatment subject and irradiates ultrasound into the skin, and a main body that controls the operation of the ultrasound treatment handpiece. Ultrasound-based skin treatment devices are primarily used to intentionally damage specific skin tissue or melt and decompose fatty tissue by generating thermal lesions using high-intensity focused ultrasound in skin tissue at a certain depth from the surface of the skin using an ultrasound treatment handpiece. In addition, skin treatment devices using lasers are used for various purposes such as preventing hair loss, promoting hair growth, skin peeling, skin regeneration, whitening, removing wrinkles or spots, and removing blemishes.The laser is irradiated onto the skin as a dot of a certain size, and the treatment is performed by applying heat only to the treatment area with the laser to damage the skin tissue. Additionally, skin treatment devices using RF (radio frequency) electrodes are used in a variety of applications, including skin remodeling / resurfacing, wrinkle removal, and treatment of sebaceous glands, hair follicles, fatty tissue, and spider veins, by inducing collagen contraction or wound healing responses in the lower dermis. In the skin treatment device, a practitioner holds a handpiece to which a treatment cartridge is detachably coupled, brings the treatment cartridge into contact with the skin, and then activates the treatment cartridge to perform treatment. Furthermore, the treatment cartridge has a preset number of uses, and must be replaced from the handpiece after being used the preset number of times. Treatment cartridges such as ultrasonic treatment cartridges, laser treatment cartridges, and RF electrode treatment cartridges are electrically connected when coupled to the handpiece, and their operation is controlled by receiving electrical power from the control unit. Conventional treatment cartridges have a complex structure and high manufacturing costs because they are equipped with a separate locking structure to maintain the connection when connected to a handpiece, and an electrical contact structure that is connected to the handpiece and electrically connected to the control body. Furthermore, when the handpiece is electrically connected to the treatment cartridge via an electric wire, there are many limitations and inconveniences in connecting and disconnecting the treatment cartridge and cleaning the treatment cartridge. In particular, in the case of an RF cartridge that rotates while the RF electrode is in contact with the skin to treat the skin, there is a problem in that the electrical connection structure is complicated and there is a lot of inconvenience in connecting or disconnecting the cartridge from the handpiece when replacing it. A prior patent for this invention is Korean Patent No. 2206623, "Needle tip and skin management device attached to a skin management device" (registered January 18, 2021). Summary of the Invention [Problem to be solved by the invention]

[0003] An object of the present invention is to provide a connection structure for a skin treatment cartridge that can ensure convenience when replacing a skin treatment electrode cartridge that is replaced periodically and can simplify the electrical connection structure. [Means for solving the problem]

[0004] In order to achieve the above object, one embodiment of a skin treatment cartridge coupling structure according to the present invention includes a skin treatment cartridge that is provided with a skin treatment operating part that stimulates the patient's skin and that comes into contact with the patient's skin, a ball plunger part that protrudes from both sides of the skin treatment cartridge, and a cartridge coupling object having a cartridge coupling part into which a portion of the skin treatment cartridge is inserted and coupled, and the inner surface of the cartridge coupling part is provided with a ball insertion part into which the ball plunger part is inserted. In the present invention, the cartridge connecting object includes a handpiece body that is held by the practitioner and electrically connects the skin treatment operating unit to the control body, and the ball plunger and the ball insertion part have an electrical terminal structure that electrically connects them to each other, so that the skin treatment operating unit and the control body can be electrically connected. In the present invention, the ball plunger portion may include a bottom terminal portion in which the spring member is seated on the bottom surface of the spring insertion groove portion into which the spring member is inserted and which is electrically connected to the skin treatment operating portion by an electric wire. In the present invention, the skin treatment cartridge may be provided on both sides with contact protrusions that protrude in a ring shape and surround the ball plunger portion. In the present invention, the skin treatment cartridge includes a cylindrical cartridge body on both sides of which the ball plunger portion is located, thereby allowing rotation about the ball plunger portion. In the present invention, the skin treatment operating unit may include an RF electrode unit that is located on the outer circumferential surface of the cartridge body and that comes into contact with the skin to apply an RF signal. In the present invention, ring-shaped contact protrusions may protrude from both side surfaces of the cartridge body, contacting the inner side surface of the cartridge coupling portion and surrounding the ball plunger portion. In the present invention, a cartridge stopper portion may be positioned to protrude from the inner surface of the cartridge coupling portion, and the contact protrusion portion may be engaged to prevent the skin treatment cartridge from being pushed inward while in contact with the skin and moving inside the cartridge coupling portion. In the present invention, the cartridge stopper may include a ball bearing portion that rolls in contact with the contact protrusion portion on a surface facing the contact protrusion portion. One embodiment of the skin treatment cartridge connection structure according to the present invention may further include a cartridge separation portion that is positioned within the cartridge connection portion so as to be movable back and forth in the connection direction of the skin treatment cartridge, and that pushes the skin treatment cartridge to separate it from the connected cartridge connection portion. In the present invention, the cartridge separating section may include a pusher member located within the combined cartridge combining section so as to be movable back and forth, and a linear moving device located within the cartridge combining object and moving the pusher member back and forth. In the present invention, the cartridge separating unit may further include an operation switch unit located on the cartridge connecting object and operated by a practitioner to control the operation of the linear moving device. [Effects of the Invention]

[0005] The present invention has the effect of greatly improving convenience when replacing, cleaning, or disinfecting the skin treatment cartridge, because the skin treatment cartridge can be easily connected to or disconnected from the cartridge connection target using a ball plunger structure. In addition, the present invention has the effect of reducing manufacturing costs by simplifying the electrical connection structure that electrically connects the skin treatment cartridge to the cartridge connection object using a ball plunger structure that connects the skin treatment cartridge to the cartridge connection object. [Brief explanation of the drawings]

[0006] [Figure 1]FIG. 1 is a perspective view of one embodiment of a coupling structure for a skin treatment cartridge according to the present invention. [Figure 2] 1 is an exploded perspective view of one embodiment of a coupling structure for a skin treatment cartridge according to the present invention; FIG. [Figure 3] 1 is a partial cross-sectional view of one embodiment of a coupling structure for a skin treatment cartridge according to the present invention. FIG. [Figure 4] FIG. 10 is a plan view of another embodiment of a coupling structure of a skin treatment cartridge according to the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0007] The present invention will now be described in further detail. A preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings as follows. Prior to a detailed description of the present invention, the terms and phrases used in the following specification and claims should not be interpreted in a limited manner to their ordinary or dictionary meanings. Therefore, it should be understood that the embodiment described in this specification and the configurations shown in the drawings are merely the most preferred embodiment of the present invention and do not represent the entire technical concept of the present invention, and that various equivalents and modifications may exist that can replace them at the time of filing this application. FIG. 1 is a perspective view showing one embodiment of a connecting structure of an ultrasonic treatment cartridge according to the present invention, FIG. 2 is an exploded perspective view showing one embodiment of a connecting structure of an ultrasonic treatment cartridge according to the present invention, and FIG. 3 is a partial cross-sectional view showing one embodiment of a connecting structure of a skin treatment cartridge according to the present invention. Next, one embodiment of the connecting structure of the skin treatment cartridge according to the present invention will be described in detail with reference to FIGS. One embodiment of a skin treatment cartridge coupling structure according to the present invention includes a skin treatment cartridge 100 having a skin treatment active portion that contacts and stimulates the patient's skin. Furthermore, one embodiment of the connection structure of the skin treatment cartridge according to the present invention includes a cartridge connection object 300 having a cartridge connection portion 310 into which a portion of the skin treatment cartridge 100 is inserted and connected. The skin treatment cartridge 100 is equipped with a skin treatment operating unit that receives an electric power supply to operate and stimulate the skin, and when the skin treatment cartridge 100 is coupled to the cartridge coupling object 300, the skin treatment operating unit is electrically connected to the cartridge coupling object 300 and receives an electric power supply from the cartridge coupling object 300 to operate. The skin treatment cartridge 100 can be modified and implemented as a known skin treatment cartridge, such as an ultrasonic treatment cartridge that comes into contact with the skin to stimulate and treat the skin, a laser treatment cartridge, or an RF treatment cartridge that includes an RF electrode. That is, as an example, the skin treatment operating unit includes at least one of an ultrasonic transducer that generates ultrasonic waves, a laser generating unit that generates a treatment laser, and an RF electrode unit 120 that is attached to the outer surface of the cartridge housing and generates an RF signal. On the other hand, the cartridge connecting object 300 is, as an example, a handpiece body 300a to which the skin treatment cartridge 100 is detachably connected, which is held by the practitioner's hand for use, and which electrically connects the skin treatment operating unit to the control body 10. The handpiece body 300a is connected to the control body 10 by a connection cable 11, and the control body 10 is electrically connected to the skin treatment cartridge 100 via the handpiece body 300a and includes a control unit that controls the operation of the skin treatment operating unit of the skin treatment cartridge 100. The control body 10 can be modified in various ways to operate and control the operation of the handpiece body 300a including the various known skin cartridges, and therefore a detailed description thereof will be omitted. The control body 10 may include a display panel 10a that displays the control mode of the handpiece body 300a on a screen so that the operation of each handpiece body 300a can be controlled. For example, the display panel 10a may be a touch screen panel, whereby an operation control signal is input by touching the screen displayed on the touch screen panel. The operation control modes of each handpiece body 300a and the input of operation control signals to the operation control modes are well known in the field of skin treatment devices, and therefore will not be described in further detail. Ball plunger parts 200 are protruded from both sides of the skin treatment cartridge 100, and a ball insertion part 321 into which the ball plunger parts 200 are inserted is provided on the inner side of the cartridge coupling part 310. The ball plunger portion 200 includes a ball member 210 that partially protrudes from the side surface of the skin treatment cartridge 100, and a spring member 220 that is located inside the skin treatment cartridge 100 and elastically supports the ball member 210. The ball plunger portion 200 has a ball member 210, a portion of which protrudes from the side of the skin treatment cartridge 100, elastically supported by a spring member 220, and when a portion of the skin treatment cartridge 100 is coupled into the cartridge coupling portion 310 of the handpiece main body 300a, which is the cartridge coupling object 300, the ball member 210 is inserted into the ball insertion portion 321 located on the inner surface of the cartridge coupling portion 310. The skin treatment cartridge 100 is maintained in a coupled state to the handpiece body 300a by inserting a portion of the ball member 210 of the ball plunger portion 200 into the ball insertion portion 321 located on the inner surface of the cartridge coupling portion 310, and can be easily separated from the handpiece body 300a when the ball member 210 is pulled in the opposite direction to the coupling direction by a force that causes it to come out of the ball insertion portion. That is, the skin treatment cartridge 100 can be easily connected to the handpiece body 300a and used for skin treatment by inserting a portion of it into the cartridge connecting portion 310 and then pushing it to insert the ball plunger portion 200 into the ball inserting portion 321. Furthermore, when the cartridge reaches the end of its life or a malfunction occurs, it can be easily separated, which increases the convenience of replacement work. Meanwhile, the ball plunger portion 200 and the ball insertion portion 321 have an electrical terminal structure that electrically connects them to each other, so that the skin treatment operating portion of the skin treatment cartridge 100 is electrically connected to the cartridge connecting object 300, i.e., the control body 10, so that electrical power can be supplied to the skin treatment operating portion and its operation can be controlled. More specifically, the ball insertion portion 321 is a ball insertion terminal member 321 having a ball insertion groove portion and made of an electrically conductive material, and the ball plunger portion 200 may have a structure in which the spring member 220 is connected to the skin treatment operating portion by an electric wire, or the spring member 220 is seated on the bottom surface of the spring insertion groove portion into which the spring member 220 is inserted, and further includes a bottom terminal portion 330 electrically connected to the skin treatment operating portion by an electric wire. The ball insertion terminal member 321 is electrically connected to the control main body 10 via the connection cable 11 of the handpiece main body 300a. The spring member 220 elastically supports the ball member 210 so as to be constantly maintained in a state of being connected to the ball member 210, and is electrically connected to the skin treatment operating unit by an electric wire or a bottom terminal portion 330. The bottom terminal portion 330 is always maintained in a stably connected state with the spring member 220 by the elastic force of the spring member 220, and the skin treatment operating portion and the spring member 220 can be maintained in a stably electrically connected state. Therefore, when the skin treatment cartridge 100 is coupled into the cartridge coupling portion 310 of the handpiece body 300a, the ball plunger portion 200 is inserted into the ball insertion groove portion of the ball insertion terminal member 321, whereby the skin treatment operating unit is electrically connected to the control body 10 via the connection cable 11 of the handpiece body 300a, and the operation of the skin treatment operating unit can be controlled via the control body 10. In the skin treatment cartridge 100 connected to the handpiece body 300a, the structure in which the skin treatment operating unit is electrically connected to the control body 10 via the connection cable 11 can be implemented in various ways using a known structure, so further detailed explanation will be omitted. On the other hand, the skin treatment operating unit includes an RF electrode unit 120 that contacts the skin and applies an RF signal, and the skin treatment cartridge 100 is, as an example, an RF treatment cartridge that can rotate around the ball plunger unit 200 during treatment with the RF electrode unit 120 in contact with the skin. More specifically, the skin treatment cartridge 100 includes a cylindrical cartridge body 110 on both sides of which a ball plunger portion 200 is located, thereby allowing the skin treatment cartridge 100 to rotate about the ball plunger portion 200 . On both side surfaces of cartridge body 110, ring-shaped contact protrusions 100a protrude, which come into contact with the inner surface of cartridge coupling portion 310 and surround ball plunger portion 200. The contact protrusion 100a is a ring-shaped protrusion that surrounds the ball plunger portion 200 and has a width that is less than 30% of the diameter of the ball member 210, thereby minimizing the contact area between both side surfaces of the cartridge main body portion 110 and the inner surface of the cartridge connecting portion 310. When the skin treatment cartridge 100 is coupled to or separated from the cartridge coupling portion 310, only the contact protrusions 100a contact the inner surface of the cartridge coupling portion 310, thereby minimizing friction and minimizing the force applied when coupling to or separating from the handpiece body 300a. On both sides of the cartridge body 110, only the contact protrusions 100a allow the cartridge body 110 to rotate smoothly around the ball plunger 200 on the inner surface of the cartridge coupling part 310. The ball plunger portion 200 of the cartridge body portion 110 is inserted into the ball insertion portion 321 so that the cartridge body portion 110 can rotate around the ball plunger portion 200, and while rotating around the ball plunger portion 200, the cartridge body portion 110 can be stably maintained in a state where the ball plunger portion 200 is electrically connected within the ball insertion portion 321. The practitioner holds the handpiece body 300a and, with the RF electrode portion 120 of the cartridge body 110 in contact with the skin, pushes and pulls the handpiece body 300a to rotate the cartridge body 110, applying an RF signal to the patient's skin for treatment. At this time, the cartridge body 110 rotates around the ball plunger portion 200, and the ball plunger portion 200 is stably maintained in an electrically connected state within the ball insertion portion 321, allowing the RF signal to be stably applied to the skin. 4 is a plan view showing another embodiment of the coupling structure of the skin treatment cartridge according to the present invention. Referring to FIG. 4, in this embodiment of the coupling structure of the skin treatment cartridge according to the present invention, the cartridge stopper portion 3, which engages with the contact protrusion 100a, is positioned so as to protrude from the inner surface of the cartridge coupling portion 310. When the skin treatment cartridge 100 is pushed in contact with the skin, the cartridge stopper portion 330 engages the contact protrusion portion 100 a to limit the movement of the skin treatment cartridge 100 inward of the cartridge coupling portion 310 . The cartridge stopper portion 330 is positioned so as to protrude from the inner surface of the cartridge coupling portion 310 toward the inside of the ball insertion portion 321, and is positioned so that when the skin treatment cartridge 100 in contact with the skin is pressed toward the inside of the cartridge coupling portion 310, the contact protrusion portion 100a protruding from the outer surface of the skin treatment cartridge 100 is engaged. The skin treatment cartridge 100 is connected to the handpiece body 300a by the ball plunger portion 200, and the practitioner can perform treatment by grasping and pressing the handpiece body 300a while it is in contact with the skin. The practitioner holds the handpiece body 300a and presses the skin treatment cartridge 100 while it is in contact with the skin, and during the treatment, the skin treatment cartridge 100 is pushed and moves inside the cartridge coupling portion 310, and the ball plunger portion 200 can be separated from the ball insertion portion 321. If the ball plunger part 200 is separated from the ball insertion part 321, the power supply is cut off, causing a problem of interrupting the treatment. When the skin treatment cartridge 100 in contact with the skin is pressurized by the practitioner, the cartridge stopper portion 330 engages the contact protrusion portion 100a inside the cartridge coupling portion 310, thereby preventing the skin treatment cartridge 100 from being pushed and moving inside the cartridge engaging portion 310, and maintaining the ball plunger portion 200 stably inserted into the ball insertion portion 321 during treatment. In addition, the cartridge stopper part 330 is provided with a ball bearing 340 that rolls in contact with the contact protrusion part 100a on the surface facing the contact protrusion part 100a, thereby allowing the cartridge body part 110 to rotate smoothly. The cartridge body 110 rotates around the ball plunger 200 while in contact with the skin to treat the patient's skin, so the contact protrusion 100a may not rotate smoothly due to friction caused by contact with the cartridge stopper 330. When the cartridge body 110 rotates while in contact with the skin, the ball bearing 340 rolls in contact with the contact protrusion 100a, thereby enabling the cartridge body 110 to rotate smoothly. This allows the cartridge body 110 to rotate smoothly while in contact with the skin during treatment, and the ball plunger portion 200 will not come off the ball insertion portion 321 even if excessive pressure is applied to the skin, allowing for stable treatment and greatly improving convenience for the practitioner. In addition, another embodiment of the skin treatment cartridge connection structure according to the present invention may further include a cartridge separation part 40 that is positioned within the cartridge connection part 310 so as to be movable back and forth in the connection direction of the skin treatment cartridge 100, and that pushes the skin treatment cartridge 100 to separate it from the connected cartridge connection part 310. The cartridge separation section 400 includes a pusher member 410 that is positioned within the cartridge connection section 310 and is movable back and forth in the connection direction of the skin treatment cartridge 100, and a linear movement device 420 that is positioned within the handpiece body 300a, which is the cartridge connection object 300, and moves the pusher member 410 back and forth. In addition, the cartridge separating unit 400 may further include an operation switch unit 430 located in the handpiece body 300a and operated by the practitioner to control the operation of the linear moving device 420. The operation switch section 430 includes a forward switch 431 and a reverse switch 432, and the practitioner can press the forward switch 431 to move the pusher member 410 forward using the linear movement device 420, and use the pusher member 410 to push the skin treatment cartridge 100 outward from the cartridge connection section 310 to separate it from the handpiece body 300a. Furthermore, when the practitioner presses the backward switch 432, the linear movement device 420 moves the pusher member 410 backward to return it to its original position. The linear movement device 420 is, for example, a ball screw type linear actuator, but can also be modified in various ways using known lifting devices such as a rack and pinion structure that includes a rack gear and a pinion gear that meshes with the rack gear and is rotated by a motor, and a hydraulic cylinder, which converts the rotational force of the motor into linear movement, and so a more detailed description will be omitted. Depending on the structure of the skin treatment cartridge 100 attached to the handpiece body 300a, it may be difficult for the practitioner to grasp it when detaching it. Also, if the RF treatment cartridge has the RF electrode portion 120 located on the outer surface, there is a risk of the practitioner's fingers being burned if an RF signal is applied when the RF treatment cartridge is held with the fingers. When replacing the skin treatment cartridge 100, the cartridge separating unit 400 can easily and safely separate the skin treatment cartridge 100 from the cartridge connecting object 300, i.e., the handpiece body 300a, by pushing the skin treatment cartridge 100 with the pusher member 410. The present invention uses a ball plunger structure to easily connect or disconnect the skin treatment cartridge 100 to or from the cartridge connection object 300, thereby greatly improving convenience when replacing, cleaning, or disinfecting the skin treatment cartridge 100. In addition, the present invention can reduce manufacturing costs by simplifying the electrical connection structure that electrically connects the skin treatment cartridge 100 to the cartridge connection object 300 using a ball plunger structure that connects the skin treatment cartridge 100 to the cartridge connection object 300. The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention, and it is clear that these modifications are included in the structure of the present invention. [Explanation of symbols]

[0008] 100 Skin Treatment Cartridges 100a Contact protrusion 110 Cartridge body 120 RF electrode section 200 Ball plunger part 210 Ball member 220 Spring member 230 Bottom terminal section 300 Cartridge connection object 300a handpiece body 310 Cartridge joint 320 Ball insertion part 321 Ball insertion terminal member 330 Cartridge stopper 340 Ball bearing section 400 Cartridge Separation Unit 410 Pusher member 420 Linear motion equipment 430 Operation switch section 431 Forward switch 432 Reverse switch

Claims

1. a skin treatment cartridge that is in contact with the patient's skin and includes a skin treatment actuator that stimulates the patient's skin; ball plungers protruding from both sides of the skin treatment cartridge; a cartridge coupling object having a cartridge coupling portion into which a portion of the skin treatment cartridge is inserted and coupled, 10. A skin treatment cartridge coupling structure, comprising: an inner surface of the cartridge coupling portion having a ball insertion portion into which the ball plunger portion is inserted.

2. The cartridge connection object is a handpiece body that is held by a practitioner for use and electrically connects the skin treatment operating unit to a control body; The skin treatment cartridge connection structure according to claim 1, characterized in that the ball plunger and the ball insertion portion have an electrical terminal structure that electrically connects them to each other, thereby electrically connecting the skin treatment operating portion and the control body.

3. 3. The skin treatment cartridge connection structure according to claim 2, wherein the ball plunger portion includes a bottom terminal portion in which the spring member is seated on the bottom surface of a spring insertion groove portion into which the spring member is inserted and which is electrically connected to the skin treatment operating portion by an electric wire.

4. The skin treatment cartridge coupling structure according to claim 1 , wherein both sides of the skin treatment cartridge are provided with ring-shaped contact protrusions surrounding the ball plunger portion.

5. The skin treatment cartridge according to claim 2, characterized in that the skin treatment cartridge includes a cylindrical cartridge body portion on both sides of which the ball plunger portion is located, thereby rotating around the ball plunger portion.

6. The skin treatment operating section includes: The connection structure of the skin treatment cartridge according to claim 5, further comprising an RF electrode portion located on the outer circumferential surface of the cartridge body portion and contacting the skin to apply an RF signal.

7. The connecting structure of a skin treatment cartridge according to claim 5, characterized in that ring-shaped contact protrusions protrude from both sides of the cartridge body, contacting the inner surface of the cartridge connecting portion and surrounding the ball plunger portion.

8. 8. The skin treatment cartridge connection structure according to claim 4 or 7, characterized in that a cartridge stopper portion is positioned to protrude from the inner surface of the cartridge connection portion, and the contact protrusion portion is engaged to prevent the skin treatment cartridge from being pushed inward while in contact with the skin and moving inside the cartridge connection portion.

9. The coupling structure of a skin treatment cartridge according to claim 8, wherein the cartridge stopper portion is provided with a ball bearing portion that rolls in contact with the contact protrusion portion on a surface facing the contact protrusion portion.

10. The skin treatment cartridge connection structure of claim 1, further comprising a cartridge separation portion located within the cartridge connection portion so as to be movable back and forth in the connection direction of the skin treatment cartridge, and which pushes the skin treatment cartridge to separate it from the connected cartridge connection portion.

11. The cartridge separation unit includes: a pusher member located within the combined cartridge combining portion so as to be movable back and forth; The connection structure of a skin treatment cartridge according to claim 10, further comprising: a linear movement device located on the cartridge connection target body and configured to move the pusher member back and forth.

12. The skin treatment cartridge connection structure according to claim 11, wherein the cartridge separation unit further includes an operation switch unit located on the cartridge connection target and operated by a practitioner to control the operation of the linear movement device.

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