Connecting structure of a skin treatment cartridge

JP7899471B2Active Publication Date: 2026-08-03CLASSYS INC

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Patent Information

Authority / Receiving Office: JP · JP
Patent Type: Patents
Current Assignee / Owner: CLASSYS INC
Filing Date: 2023-11-08
Publication Date: 2026-08-03

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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.

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Description

Technical Field

[0001] The present invention relates to a coupling structure of a cartridge for skin treatment, and particularly to an invention of a coupling structure of a cartridge for skin treatment that can ensure convenience when replacing an electrode cartridge for skin treatment that is periodically replaced.

Background Art

[0002] In recent years, due to the increasing trend of growing interest in skin beauty day by day, various skin treatment devices have been developed. Skin treatment devices have been proposed in various structures, such as a skin treatment device using ultrasonic waves, a skin treatment device using a laser, and a skin treatment device using an RF (radio frequency) electrode. A skin treatment device using ultrasonic waves includes an ultrasonic treatment handpiece that contacts the skin of a treatment subject and irradiates ultrasonic waves into the skin, and a main body that controls the operation of the ultrasonic treatment handpiece. A skin treatment device using ultrasonic waves uses the ultrasonic treatment handpiece to generate a thermal lesion by high-intensity focused ultrasonic waves in skin tissue at a certain depth from the surface of the skin, and is mainly used for procedures such as intentionally damaging specific skin tissue, melting adipose tissue, and decomposing it. In addition, a skin treatment device using a laser is used for various purposes such as preventing hair loss, promoting hair growth, skin peeling, skin regeneration, whitening, removing wrinkles or spots, and removing scars. The laser is irradiated onto the skin as a point of a certain size, but the treatment is performed by applying heat only to the treatment target site with the laser to damage the skin tissue. In addition, a skin treatment device using an RF electrode (radio frequency) is variously used for skin remodeling / resurfacing, removing wrinkles, and treating sebaceous glands, hair follicles, adipose tissue, and spider veins by causing contraction of collagen in the lower dermis or a wound healing reaction. The skin treatment device involves the practitioner grasping a handpiece to which a treatment cartridge is detachably attached, bringing the treatment cartridge into contact with the skin, and then activating the treatment cartridge to perform the treatment. Furthermore, the treatment cartridge has a predetermined number of uses, and it must be replaced from the handpiece after being used for the predetermined number of uses. Treatment cartridges, such as ultrasonic treatment cartridges, laser treatment cartridges, and RF electrode treatment cartridges, are electrically connected to the handpiece when coupled, and their operation is controlled by receiving electrical power from the control unit. Conventional treatment cartridges had the problem of being structurally complex and costly to manufacture, as they required separate locking structures to maintain the connection with the handpiece and electrical contact structures that connected to the handpiece and electrically linked to the control unit. Furthermore, if the handpiece has a structure that electrically connects to the treatment cartridge via wires when connecting or disconnecting the treatment cartridge, there are problems that arise in terms of many constraints and inconveniences during the connection or disconnection and cleaning of the treatment cartridge. In particular, with RF cartridges that rotate while the RF electrode is in contact with the skin during treatment, the electrical connection structure is complex, and there are many inconveniences in connecting or disconnecting them from the handpiece during replacement. Prior to this invention, there is Korean Registered Patent No. 2206623, "Needle tip to be attached to a skin management device and skin management device" (registered January 18, 2021). [Overview of the project] [Problems that the invention aims to solve]

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

[0004] To achieve the above objective, one embodiment of the coupling structure for a skin treatment cartridge according to the present invention includes a skin treatment cartridge that has a skin treatment operating part that stimulates the patient's skin and comes into contact with the patient's skin, a cartridge coupling target having ball plunger parts protruding from both sides of the skin treatment cartridge and a cartridge coupling part into which a portion of the skin treatment cartridge is inserted and coupled, wherein 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-to-connect body includes a handpiece body that is held and used by the practitioner and electrically connects the skin treatment operating part 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 part 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 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. In the present invention, the skin treatment cartridge may be provided with ring-shaped contact protrusions that surround the ball plunger portion on both sides. In the present invention, the skin treatment cartridge includes cylindrical cartridge body portions on both sides on which the ball plunger portion is located, thereby enabling rotation around the ball plunger portion. In the present invention, the skin treatment operating unit may include an RF electrode unit located on the outer circumferential surface of the cartridge body and in contact with the skin to apply an RF signal. In the present invention, ring-shaped contact protrusions can protrude from both sides of the cartridge body portion, contacting the inner surface of the cartridge coupling portion and surrounding the ball plunger portion. In the present invention, a cartridge stopper portion can be positioned on the inner surface of the cartridge coupling portion so as to protrude, thereby preventing the skin treatment cartridge from being pushed inward while in contact with the skin, by engaging with the contact projection portion. In the present invention, the cartridge stopper portion may be provided with a ball bearing portion on the surface facing the contact projection portion, which rolls in contact with the contact projection portion. One embodiment of the bonding structure for a skin treatment cartridge according to the present invention may further include a cartridge separation portion that is located within the cartridge bonding portion so as to be movable back and forth in the bonding direction of the skin treatment cartridge, and which pushes the skin treatment cartridge to separate it from the bonding cartridge bonding portion. In the present invention, the cartridge separation unit may include a pusher member that is movable back and forth within the combined cartridge coupling unit, and a linear movement device that is located on the cartridge coupling target and moves the pusher member back and forth. In the present invention, the cartridge separation unit may further include an operating switch unit located on the cartridge coupling target and operated by a practitioner to control the operation of the linear motion device. [Effects of the Invention]

[0005] This invention allows for easy attachment or detachment of a skin treatment cartridge to a target object using a ball plunger structure, thereby significantly improving convenience during cartridge replacement, cleaning, and disinfection. Furthermore, 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-connecting object through a ball plunger structure that connects the skin treatment cartridge to the cartridge-connecting object. [Brief explanation of the drawing]

[0006] [Figure 1]This is a perspective view showing one embodiment of the bonding structure for a skin treatment cartridge according to the present invention. [Figure 2] This is an exploded perspective view showing one embodiment of the coupling structure of a skin treatment cartridge according to the present invention. [Figure 3] This is a partial cross-sectional view showing one embodiment of the bonding structure of a skin treatment cartridge according to the present invention. [Figure 4] This is a plan view showing another embodiment of the coupling structure for a skin treatment cartridge according to the present invention. [Modes for carrying out the invention]

[0007] The present invention will be described in more detail below. Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to the detailed description of the present invention, terms or words used in this specification and claims as described below should not be construed as being limited to their ordinary or lexicographical meanings. Accordingly, the embodiments described herein and the configurations shown in the drawings represent only one of the most preferred embodiments of the present invention and do not represent the entire technical idea of the present invention, and it should be understood that there are various equivalents and modifications that can be substituted for them at the time of filing. Figure 1 is a perspective view showing one embodiment of the coupling structure for an ultrasonic therapy cartridge according to the present invention, Figure 2 is an exploded perspective view showing one embodiment of the coupling structure for an ultrasonic therapy cartridge according to the present invention, and Figure 3 is a partial cross-sectional view showing one embodiment of the coupling structure for a skin treatment cartridge according to the present invention. Next, with reference to Figures 1 to 3, one embodiment of the coupling structure for a skin treatment cartridge according to the present invention will be described in detail. One embodiment of a coupling structure for a skin treatment cartridge according to the present invention includes a skin treatment cartridge 100 having a skin treatment activating part that contacts and stimulates the patient's skin. Furthermore, one embodiment of the bonding structure for a skin treatment cartridge according to the present invention includes a cartridge bonding target 300 having a cartridge bonding portion 310 into which a portion of the skin treatment cartridge 100 is inserted and bonded. The skin treatment cartridge 100 is equipped with a skin treatment activator that operates when an electrical power supply is provided to stimulate the skin. When the skin treatment cartridge 100 is coupled to the cartridge coupling target 300, the skin treatment activator is electrically connected to the cartridge coupling target 300 and operates when an electrical power supply is provided from the cartridge coupling target 300. The skin treatment cartridge 100 can be modified and implemented as a known skin treatment cartridge, such as an ultrasound treatment cartridge, a laser treatment cartridge, or an RF treatment cartridge including an RF electrode, which treats the skin by contacting and stimulating it. In other words, the skin treatment unit may include, for example, at least one of the following: an ultrasonic transducer that generates ultrasound, a laser generating unit that generates a therapeutic 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, one example of a cartridge-connected body 300 is a handpiece body 300a to which a skin treatment cartridge 100 is detachably connected, which is held by the practitioner in their hand for use, and which electrically connects the skin treatment operating part to the control body 10. The handpiece body 300a is connected to the control body 10 by a connecting 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 part of the skin treatment cartridge 100. The control unit 10 can be modified in various ways to operate and control the operation of the handpiece body 300a, which includes each known skin cartridge; therefore, a more detailed explanation is omitted. The control unit 10 may include a display panel 10a that outputs the control mode of each handpiece body 300a to the screen, and one example of the operation control signals being input to the display panel 10a is by touching the screen output to the touchscreen panel. The operation control modes of each handpiece body 300a, and the input of operation control signals to these operation control modes, are well known in skin treatment devices, so a more detailed explanation will be omitted. Ball plunger portions 200 are provided protruding from both sides of the skin treatment cartridge 100, and a ball insertion portion 321 into which the ball plunger portions 200 are inserted is provided on the inner surface of the cartridge coupling portion 310. The ball plunger section 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 section 200 has a ball member 210 that protrudes a portion of the side surface of the skin treatment cartridge 100, which is elastically supported by a spring member 220. When a portion of the skin treatment cartridge 100 is coupled into the cartridge coupling section 310 of the handpiece body 300a, which is the cartridge coupling target 300, it is inserted into the ball insertion section 321 located on the inner surface of the cartridge coupling section 310. The skin treatment cartridge 100 is maintained in a state where a portion of the ball member 210 of the ball plunger portion 200 is inserted into a ball insertion portion 321 located on the inner surface of the cartridge coupling portion 310 and coupled to the handpiece body 300a, and the ball member 210 can be easily separated from the handpiece body 300a when pulled in the opposite direction of coupling by the force that pulls the ball member 210 out of the ball insertion portion. That is, after inserting a part inside the cartridge coupling part 310, the skin treatment cartridge 100 can be easily coupled to the handpiece main body 300a by pushing and inserting the ball plunger part 200 into the ball insertion part 321, and can be used for skin treatment procedures. When the life is exhausted or a failure occurs, it can be easily separated, thus increasing the convenience during replacement work. On the other hand, since the ball plunger part 200 and the ball insertion part 321 have an electrical terminal structure that is electrically connected to each other, the skin treatment operating part of the skin treatment cartridge 100 and the cartridge coupling object 300, that is, the control main body 10, can be electrically connected to supply electrical power to the skin treatment operating part and control its operation. More specifically, the ball insertion part 321 includes a ball insertion groove part and is a ball insertion terminal member 321 made of a material through which electricity can pass. The ball plunger part 200 can have a structure further including a bottom terminal part 330 where the spring member 220 is connected to the skin treatment operating part by an electric wire or the spring member 2 is seated on the bottom surface of the spring insertion groove part into which the spring member 220 is inserted and is electrically connected to the skin treatment operating part 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 is always maintained in a connected state with the ball member 210 by elastically supporting the ball member 210 and is electrically connected to the skin treatment operating part by an electric wire or the bottom terminal part 330. The bottom terminal part 330 is always maintained in a stable connection state with the spring member 220 by the elastic force of the spring member 220 and can stably maintain the skin treatment operating part and the spring member 220 in an electrically connected state. Therefore, when the skin treatment cartridge 100 is coupled into the cartridge coupling part 310 of the handpiece main body 300a, the ball plunger part 200 is inserted into the ball insertion groove part of the ball insertion terminal member 321. As a result, the skin treatment operating part is electrically connected to the control main body 10 via the connection cable 11 of the handpiece main body 300a, and the operation of the skin treatment operating part can be controlled via the control main body 10. In the skin treatment cartridge 100 coupled to the handpiece main body 300a, the structure in which the skin treatment operation part is electrically connected to the control main body 10 via the connection cable 11 can be variously modified to a known structure, and thus a more detailed description will be omitted. On the other hand, the skin treatment operation part includes an RF electrode part 120 that contacts the skin and applies an RF signal. As an example, the skin treatment cartridge 100 is an RF treatment cartridge that can rotate around the ball plunger part 200 during the treatment while the RF electrode part 120 is in contact with the skin. More specifically, as an example, the skin treatment cartridge 100 includes a cylindrical cartridge main body part 110 where the ball plunger part 200 is located on both side surfaces, and rotates around the ball plunger part 200. On both side surfaces of the cartridge main body part 110, ring-shaped contact protrusions 100a that contact the inner surface of the cartridge coupling part 310 and surround the ball plunger part 200 protrude. The contact protrusion 100a is a ring-shaped protrusion that surrounds the ball plunger part 200 and has a width less than 30% of the diameter of the ball member 210, so as to minimize the contact area between the both side surfaces of the cartridge main body part 110 and the inner surface of the cartridge coupling part 310 with the ring-shaped protrusion. When the skin treatment cartridge 100 is coupled and separated within the cartridge coupling part 310, only the contact protrusion 100a contacts the inner surface of the cartridge coupling part 310, so that the friction can be minimized, and the force applied during the coupling or separation with the handpiece main body 300a can be minimized. On both side surfaces of the cartridge main body part 110, the cartridge main body part 110 can rotate smoothly around the ball plunger part 200 on the inner surface of the cartridge coupling part 310 only with the contact protrusion 100a. The cartridge body 110 is such that the ball plunger 200 is inserted into the ball insertion section 321 and can rotate around the ball plunger 200, and the cartridge body 110 rotating around the ball plunger 200 can be stably maintained with the ball plunger 200 electrically connected within the ball insertion section 321. The practitioner grasps the handpiece body 300a and rotates the cartridge body 110 by pushing and pulling the handpiece body 300a while keeping the RF electrode portion 120 of the cartridge body 110 in contact with the skin, thereby applying an RF signal to the patient's skin and performing the 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, thereby enabling the RF signal to be stably applied to the skin. On the other hand, Figure 4 is a plan view showing another embodiment of the coupling structure for a skin treatment cartridge according to the present invention. Referring to Figure 4, in the other embodiment of the coupling structure for a skin treatment cartridge according to the present invention, the cartridge stopper portion 3 is positioned to protrude from the inner surface of the cartridge coupling portion 310, with the contact projection 100a being engaged with it. The cartridge stopper portion 330 engages the contact projection 100a when the skin treatment cartridge 100 is pressed while in contact with the skin, thereby restricting the movement of the skin treatment cartridge 100 inward of the cartridge coupling portion 310. The cartridge stopper portion 330 is positioned 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 that is in contact with the skin is pushed toward the inside of the cartridge coupling portion 310, the contact projection 100a protruding from the outer surface of the skin treatment cartridge 100 is locked in place. The skin treatment cartridge 100 is connected to the handpiece body 300a by a ball plunger part 200, and the practitioner can perform the treatment by grasping and pressing the handpiece body 300a while it is in contact with the skin. During treatment, when the practitioner grasps the handpiece body 300a and presses the skin treatment cartridge 100 in contact with the skin, the skin treatment cartridge 100 is pushed and moves inward into the cartridge coupling portion 310, thereby separating the ball plunger portion 200 from the ball insertion portion 321. When the ball plunger section 200 is separated from the ball insertion section 321, the power supply is cut off, causing the procedure to be interrupted. The cartridge stopper portion 330 prevents the skin treatment cartridge 100 from being pushed and moving inside the cartridge locking portion 310 when the skin treatment cartridge 100, which is in contact with the skin, is pressed by the practitioner. This is achieved by locking the contact projection 100a inside the cartridge coupling portion 310, thereby stably maintaining the ball plunger portion 200 in the ball insertion portion 321 during treatment. Furthermore, the cartridge stopper portion 330 is equipped with a ball bearing 340 on the surface facing the contact projection 100a, which contacts the contact projection 100a and rolls, thereby enabling the cartridge body portion 110 to rotate smoothly. Since the cartridge body 110 rotates around the ball plunger 200 while in contact with the skin to treat the patient's skin, the friction caused by the contact projection 100a contacting the cartridge stopper 330 prevents it from rotating smoothly. The ball bearing portion 340 ensures that when the cartridge body portion 110 rotates while in contact with the skin, it comes into contact with the contact projection portion 100a and rolls, allowing the cartridge body portion 110 to rotate smoothly. As a result, the cartridge body 110 rotates smoothly while in contact with the skin during treatment, and the ball plunger 200 does not detach from the ball insertion part 321 even if excessive pressure is applied to the skin, enabling stable treatment and greatly improving the convenience of the practitioner. Furthermore, another embodiment of the bonding structure for a skin treatment cartridge according to the present invention may further include a cartridge separation portion 40 that is positioned within the cartridge bonding portion 310 so as to be movable back and forth in the bonding direction of the skin treatment cartridge 100, and which pushes the skin treatment cartridge 100 to separate it from the bonding cartridge bonding portion 310. The cartridge separation unit 400 includes a pusher member 410 located within the combined cartridge coupling unit 310 so as to be movable back and forth in the coupling direction of the skin treatment cartridge 100, and a linear movement device 420 located within the handpiece body 300a, which is the cartridge coupling target 300, for moving the pusher member 410 back and forth. Furthermore, the cartridge separation unit 400 is located on the handpiece body 300a and may further include an operating switch unit 430 that the operator can operate to control the operation of the linear motion device 420. The operating switch section 430 includes a forward switch 431 and a reverse switch 432. The operator can press the forward switch 431 to advance the pusher member 410 with the linear movement device 420, and use the pusher member 410 to push the skin treatment cartridge 100 to the outside of the cartridge coupling section 310, thereby separating it from the handpiece body 300a. Furthermore, when the operator presses the reverse switch 432, the linear movement device 420 reverses the pusher member 410 and returns it to its original position. The linear motion device 420 is, for example, a ball screw type linear actuator. However, it can also be modified in various ways using a rack and pinion structure that converts the rotational force of a motor into linear motion, a known lifting device such as a hydraulic cylinder, by including a rack gear and a pinion gear that meshes with the rack gear and is rotated by a motor. Therefore, a more detailed explanation is omitted. Depending on the structure of how the skin treatment cartridge 100 is attached to the handpiece body 300a, it may be difficult for the practitioner to grasp when separating it. Furthermore, if the RF treatment cartridge has the RF electrode section 120 located on its outer surface, there is a risk of burns to the practitioner's fingers if an RF signal is applied when the cartridge is grasped by the fingers. The cartridge separation unit 400 allows the skin treatment cartridge 100 to be easily and safely separated from the cartridge coupling target 300, i.e., the handpiece body 300a, by being pushed by the pusher member 410 when replacing the skin treatment cartridge 100. The present invention allows for easy attachment or detachment of the skin treatment cartridge 100 to or from the cartridge attachment target 300 using a ball plunger structure, thereby greatly improving convenience during replacement, cleaning, or disinfection of the skin treatment cartridge 100. Furthermore, the present invention reduces manufacturing costs by simplifying the electrical connection structure that electrically connects the skin treatment cartridge 100 to the cartridge-connecting target body 300 through a ball plunger structure that connects the skin treatment cartridge 100 to the cartridge-connecting target body 300. The present invention is not limited to the embodiments described above, and can be implemented in various ways without departing from the spirit of the invention, and this is clearly included in the configuration of the present invention. [Explanation of symbols]

[0008] 100 Skin Treatment Cartridges 100a Contact projection 110 Cartridge body 120 RF electrode section 200 Ball plunger section 210 Ball component 220 Spring component 230 Bottom terminal section 300 cartridges to be combined 300a Handpiece Body 310 Cartridge connection part 320 Ball insertion section 321 Ball insertion terminal member 330 Cartridge stopper section 340 Ball bearing section 400 Cartridge Separation Section 410 Pusher component 420 Linear motion equipment 430 Operation switch section 431 Forward switch 432 Reverse switch

Claims

1. It is equipped with a skin treatment activating unit that stimulates the patient's skin, and a skin treatment cartridge that comes into contact with the patient's skin, The aforementioned skin treatment cartridge includes ball plunger portions protruding from both sides, A cartridge-connecting body having a cartridge-connecting portion into which a portion of the skin treatment cartridge is inserted and connected, The inner surface of the cartridge coupling portion is provided with a ball insertion portion into which the ball plunger portion is inserted, and A coupling structure for a skin treatment cartridge, further comprising a cartridge separation portion that is located within the cartridge coupling portion so as to be movable back and forth in the coupling direction of the skin treatment cartridge, and which pushes the skin treatment cartridge to separate it from the cartridge coupling portion.

2. The cartridge to be coupled is The handpiece body, which is held and used by the practitioner, includes the skin treatment operating part that is electrically connected to the control unit. The coupling structure for a skin treatment cartridge according to claim 1, characterized in that the ball plunger portion 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. The coupling structure for a skin treatment cartridge according to claim 2, characterized in that the ball plunger portion includes a bottom terminal portion into which a spring member is seated on the bottom surface of a spring insertion groove portion into which a spring member is inserted, and which is electrically connected to the skin treatment operating portion by an electric wire.

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

5. The skin treatment cartridge coupling structure according to claim 2, characterized in that the skin treatment cartridge includes cylindrical cartridge body portions on both sides on which the ball plunger portion is located, thereby allowing it to rotate around the ball plunger portion.

6. The skin treatment operating section includes: The coupling structure for a skin treatment cartridge according to claim 5, characterized in that it includes an RF electrode portion located on the outer circumferential surface of the cartridge body portion and in contact with the skin to apply an RF signal.

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

8. A coupling structure for a skin treatment cartridge according to claim 4 or 7, characterized in that a cartridge stopper portion is positioned on the inner surface of the cartridge coupling portion so as to prevent the skin treatment cartridge from being pushed inward while in contact with the skin by the contact projection engaging with the cartridge coupling portion.

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

10. The cartridge separation section is A pusher member is positioned within the cartridge coupling portion so as to be movable back and forth, A coupling structure for a skin treatment cartridge according to claim 1, characterized in that it includes a linear movement device located on the cartridge coupling target and moving the pusher member back and forth.

11. The coupling structure for a skin treatment cartridge according to claim 10, characterized in that the cartridge separation unit is located on the cartridge coupling target and further includes an operating switch unit which is operated by a practitioner to control the operation of the linear motion device.