A treatment head and skin treatment device

Abstract

The utility model discloses a kind of processing head and skin processing equipment, it is related to medical instrument technical field, the processing head includes shell, including front shell and rear shell, front shell is equipped with injection hole and electrode assembly, electrode assembly is used to electrically connect the radio frequency generator to heat skin;Formed with liquid inlet pipe and air inlet pipe on rear shell;And adapter, setting in shell, and connect front shell and rear shell;Wherein, air inlet pipe, adapter, injection hole is communicated to form the gas delivery path for spraying high-pressure gas;Liquid inlet pipe, adapter, injection hole is communicated to form the liquid delivery path for spraying moisturizing liquid;Liquid delivery path and gas delivery path converge at injection hole and the gas-liquid mixture after high-pressure gas is broken liquid is sprayed to skin by injection hole. The diameter of atomized liquid sprayed in the case is more fine, and skin radio frequency processing and nutrient solution atomization penetration can be integrated, and one skin processing equipment is used to realize efficient water replenishment, drug penetration and radio frequency processing.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a treatment head and skin treatment device. Background Technology

[0002] Radio frequency (RF) is a high-frequency alternating electromagnetic wave that falls between amplitude-modulated (AM) and frequency-modulated (FM) radio waves. Its energy exists and propagates in space in the form of electricity or magnetism (waves). Its frequency range is very wide, ranging from hundreds of kHz to hundreds of MHz.

[0003] The mechanism of radio frequency (RF) heating primarily depends on the operating frequency of the RF circuit. There are two main heating mechanisms: one is the generation of ionic currents through the displacement of charged particles in an alternating electromagnetic field; the other is the rotation of polar water molecules in an alternating electromagnetic field. Both phenomena interact with the affected particles and biological tissues, leading to the volume dissipation of electromagnetic energy, thereby heating and raising the temperature of the biological tissues. During high-frequency thermal treatment of the skin, it is necessary to replenish the skin tissue with liquids or gases to achieve fluid and gas replenishment during the skin heating process, such as moisturizing lotions and oxygen.

[0004] Currently, the common treatment head structure on the market is designed with a gas-liquid mixing path connecting the jet orifice. After converging within the handle, the liquid then passes through a shared gas-liquid path within the treatment head to replenish nutrients and oxygen to the skin. However, the molecules of nutrients and oxygen are relatively large, limiting skin penetration. Therefore, there is an urgent need for a treatment head equipped with independent gas and liquid delivery paths, converging at the jet orifice in contact with the skin, and combining this with radiofrequency skin treatment for anti-aging, to further enhance the skin's self-repair function after radiofrequency treatment. Utility Model Content

[0005] The main purpose of this invention is to propose a treatment head and skin treatment device that aims to simultaneously achieve efficient hydration, drug penetration and radio frequency energy treatment.

[0006] To achieve the above objectives, this utility model proposes a method for coupling a processing head with a radio frequency generator in a skin treatment device, comprising:

[0007] A housing, comprising a front housing and a rear housing, the front housing having injection holes and an electrode assembly for electrically connecting the radio frequency generator to heat the skin; the rear housing having a liquid inlet pipe and an air inlet pipe formed thereon; and

[0008] An adapter is disposed within the housing and connects the front and rear housings;

[0009] The air inlet pipe, the adapter, and the injection hole are connected to form a gas delivery path for injecting high-pressure gas.

[0010] The inlet pipe, the adapter, and the spray hole are connected to form a liquid delivery path for spraying moisturizing liquid;

[0011] The liquid delivery path and the gas delivery path converge at the injection hole, and the gas-liquid mixture after the high-pressure gas breaks up the liquid is sprayed onto the skin through the injection hole.

[0012] In one embodiment, the front shell includes a first connecting portion, the first connecting portion being disposed around the injection hole, and the inner cavity of the first connecting portion including an injection core disposed at the position of the injection hole;

[0013] The rear housing includes a second connecting portion, which is disposed around the air intake pipe and the air intake pipe;

[0014] The adapter includes an outer annular portion, an inner annular portion, and a connecting partition. The inner annular portion and the outer annular portion are disposed on the connecting partition. The outer annular portion is spaced out and sleeved on the outside of the inner annular portion. The connecting partition located between the inner annular portion and the outer annular portion has a plurality of air passage holes. The space between the outer annular portion and the inner annular portion and the plurality of air passage holes form the first part of the gas delivery path.

[0015] In one embodiment, the nozzle has a plurality of strip grooves circumferentially arranged, the nozzle abuts against the inner cavity of the first connecting part, and the inner wall of the strip grooves and the inner cavity of the first connecting part form a second part of the gas delivery path.

[0016] In one embodiment, one end of the outer annular portion is sealed and sleeved on the outside of the first connecting portion, and the other end of the outer annular portion is sealed and sleeved on the outside of the second connecting portion; one end of the inner annular portion is sealed and sleeved on the spray core, and the other end of the inner annular portion is sealed and embedded in the mounting hole of the second connecting portion and communicates with the liquid inlet pipe.

[0017] In one embodiment, the liquid inlet pipe, the mounting hole of the second connecting portion, the inner annular portion, and the nozzle core are connected to form the liquid delivery path; the first and second portions of the gas delivery path are arranged around the liquid delivery path.

[0018] In one embodiment, the outer wall of the spray core is fitted with a first sealing ring, which is sealed to the inner annular portion; the first connecting portion is fitted with a second sealing ring, which is sealed to the outer annular portion; the inner annular portion is fitted with a third sealing ring, which is sealed to the inlet pipe; and the second connecting portion is fitted with a fourth sealing ring, which is sealed to the outer annular portion.

[0019] In one embodiment, the outer wall of the spray core is formed with an annular boss, and the first sealing ring abuts against the annular boss and the end of the inner annular portion near the spray core; the outer wall of the first connecting portion is formed with a first step, and the end of the outer annular portion near the first connecting portion is formed with a second step, and the second sealing ring abuts against the first step and the second step; the outer wall of the end of the inner annular portion away from the spray core is formed with a first annular groove, and the third sealing ring is confined within the first annular groove; the outer wall of the second connecting portion is formed with a second annular groove; and the fourth sealing ring is confined within the second annular groove.

[0020] In one embodiment, the inner cavity of the nozzle includes a first cavity segment, a second cavity segment, and a third cavity segment that are sequentially connected along the direction from the rear shell to the front shell. The inner diameter of the first cavity segment is larger than the inner diameter of the third cavity segment, and the second cavity segment gradually contracts along the direction from the first cavity segment to the third cavity segment.

[0021] In one embodiment, the inner cavity of the first connecting portion includes a conveying cavity section and a contraction cavity section that are sequentially connected along the direction from the rear shell to the front shell. The conveying cavity section is connected to the inner cavity of the outer annular portion, and the contraction cavity section is connected to the injection hole. The contraction cavity section gradually contracts along the direction from the rear shell to the front shell.

[0022] This utility model also proposes a skin treatment device, which includes a handle and a treatment head as described in any of the above embodiments, wherein the handle includes a gripping housing and the treatment head is connected to the gripping housing.

[0023] The skin treatment head proposed in this utility model includes a housing, a front housing, and a rear housing. The front housing is provided with a spray hole and an electrode assembly, which is used to electrically connect to the radio frequency generator to heat the skin. The rear housing has a liquid inlet pipe and an air inlet pipe. An adapter is disposed inside the housing and connects the front housing and the rear housing. The air inlet pipe, the adapter, and the spray hole are connected to form a gas delivery path for spraying high-pressure gas. The liquid inlet pipe, the adapter, and the spray hole are connected to form a liquid delivery path for spraying moisturizing liquid. The liquid delivery path and the gas delivery path converge at the spray hole, and the gas-liquid mixture after the high-pressure gas breaks up the liquid is sprayed onto the skin through the spray hole. The gas delivery path and liquid delivery path can respectively input high-pressure air and nutrient solution, which converge at the spray nozzle. The liquid film is disturbed by the air, generating and expanding surface waves that break into small liquid columns at the end of the film. These columns are then further broken into tiny droplets by the surface waves, forming a spray. Compared to traditional methods where gas and liquid converge within the skin treatment device before being sprayed out, the spray from this invention's treatment head avoids the fragmented droplets from re-merging within the head. Therefore, the diameter of the atomized droplets sprayed from the treatment head is smaller, facilitating the penetration of nutrient solution and oxygen through pores and skin cracks into the dermis, directly accelerating oxygen and nutrient solution supply to the treatment area. Furthermore, by setting electrode components on the shell around the spray nozzle, this invention can simultaneously perform radio frequency treatment and nutrient solution atomization penetration, thus achieving efficient hydration, drug penetration, and radio frequency energy treatment simultaneously. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of an embodiment of the processing head provided by this utility model;

[0026] Figure 2 for Figure 1 A sectional view along line A-A'.

[0027] Figure 3 for Figure 2 Schematic diagram of the structure of the front shell;

[0028] Figure 4 for Figure 2 A schematic diagram of the gas and liquid paths in the processing head;

[0029] Figure 5 for Figure 1 A sectional view along line B-B' in the middle;

[0030] Figure 6 for Figure 1 Exploded view of the processing head;

[0031] Figure 7 for Figure 1 An exploded view of the processing head from another perspective;

[0032] Figure 8 for Figure 7 Schematic diagram of the intermediate connector;

[0033] Figure 9 for Figure 8 A cross-sectional view of the intermediate connector.

[0034] Explanation of icon numbers:

[0035] 100. Processing head;

[0036] 1. Shell;

[0037] 11. Front shell; 11a. Injection hole; 111. First connecting part; 111a. Conveying chamber section; 111b. Contraction chamber section; 1111. First stepped part;

[0038] 12. Rear shell; 121. Liquid inlet pipe; 122. Air inlet pipe; 123. Second connecting part; 123a. Second annular groove;

[0039] 13. Adapter; 131. Outer annular portion; 1311. Second step portion; 132. Inner annular portion; 132a. First annular groove; 133. Connecting partition; 133a. Air passage;

[0040] 2. Spray core; 2a. First cavity section; 2b. Second cavity section; 2c. Third cavity section; 2d. Strip groove; 21. Annular boss;

[0041] 31. Electrode assembly; 32. Circuit board; 33. Connector;

[0042] 41. First sealing ring; 42. Second sealing ring; 43. Third sealing ring; 44. Fourth sealing ring.

[0043] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0044] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0045] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0046] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0047] This utility model proposes a processing head 100.

[0048] Please see Figure 1 , Figure 2 and Figure 4In one embodiment of this utility model, the treatment head 100 includes a housing 1, which includes a front housing 11 and a rear housing 12. The front housing 11 is provided with a spray hole 11a and an electrode assembly 31, which is used to electrically connect the radio frequency generator to heat the skin. The rear housing 12 is provided with a liquid inlet pipe 121 and an air inlet pipe 122. An adapter 13 is disposed inside the housing 1 and connects the front housing 11 and the rear housing 12. The air inlet pipe 122, the adapter 13, and the spray hole 11a are connected to form a gas delivery path for spraying high-pressure gas. The liquid inlet pipe 121, the adapter 13, and the spray hole 11a are connected to form a liquid delivery path for spraying moisturizing liquid. The liquid delivery path and the gas delivery path converge at the spray hole 11a and spray the gas-liquid mixture after the high-pressure gas breaks up the liquid onto the skin through the spray hole 11a.

[0049] The technical principle of this embodiment is based on the principles of fluid mechanics and electromagnetics. In terms of fluid mechanics, after the liquid and gas mix at the injection hole 11a, the liquid film is disturbed by air, generating surface waves that diffuse and increase in size. This causes the liquid film to break into small liquid columns at its end, which are then further split into tiny droplets by the surface waves, forming a spray. In terms of electromagnetics, the electrode assembly 31 generates radio frequency energy through positive and negative electrodes, which acts on the skin to stimulate collagen regeneration, achieving radio frequency treatment. Specifically, the liquid column splits into atomized molecules with a diameter less than micrometers. The high-pressure spray acts on the skin surface, treating each area sequentially, with the aim of replenishing the skin tissue with liquid or gas. Since the mechanism of radio frequency heating mainly depends on the operating frequency of the radio frequency, there are two heating mechanisms: one is the generation of ionic current through the displacement of charged particles in an alternating electromagnetic field; the other is the rotation of polar water molecules in an alternating electromagnetic field. Both phenomena interact with the affected particles and biological tissue, leading to the volume dissipation of electromagnetic energy, thereby heating and raising the temperature of the biological tissue. During high-frequency thermal treatment of the skin, it is necessary to replenish the skin tissue with liquid or gas to achieve fluid and gas replenishment during the skin heating process, such as moisturizing fluid and oxygen. In this embodiment, the treatment head converges at the injection hole 11a through the liquid delivery path and the gas delivery path, and sprays the gas-liquid mixture after the high-pressure gas breaks up the liquid through the injection hole 11a onto the skin. This allows oxygen and atomized molecules to penetrate into the dermis through pores and skin cracks, directly accelerating the oxygen supply to the treatment area, promoting local blood circulation, increasing oxygen content, and activating cells.

[0050] In this embodiment, the housing 1 is the main structure of the processing head 100, including a front housing 11 and a rear housing 12. The front housing 11 is provided with a spray hole 11a and an electrode assembly 31. The rear housing 12 has a liquid inlet pipe 121 and an air inlet pipe 122. The housing 1 has an adapter 13 inside, which is connected to the front housing 11 and the rear housing 12 and forms a liquid delivery path and a gas delivery path to guide the flow of liquid and gas. The spray hole 11a is the outlet for the liquid and gas mixture. The diameter and shape of the spray hole 11a can be optimized according to the processing requirements to obtain the best atomization effect. The liquid inlet pipe 121 and the air inlet pipe 122 are used to input nutrient solution and high-pressure air, respectively. The liquid delivery path and the gas delivery path are independent of each other to ensure smooth flow of liquid and gas in the channel and avoid mutual interference. It should be noted that in this embodiment, the front housing forming the spray hole 11a and the rear housing forming the liquid inlet pipe 121 are not limited to two opposite ends, but can also be two adjacent ends, etc. Figure 2 As shown, the housing 1 is cylindrical in shape. The injection hole 11a and the liquid inlet pipe 121 / air inlet pipe 122 are respectively located at opposite ends of the cylinder. This is only an exemplary example of this application. In addition, the liquid inlet pipe 121 and the air inlet pipe 122 can also be located at any position of the cylindrical housing, such as on the curved side wall.

[0051] Electrode assembly 31 is disposed on the outer wall of housing 1 and located around the periphery of injection hole 11a, for synchronous radio frequency processing. The structure of electrode assembly 31 includes positive and negative electrodes, conductive sheet or block structure, etc. The outer contour shape of the electrode can be set to ring or dot shape, etc., which can be selected according to processing requirements.

[0052] The liquid delivery path and the gas delivery path guide the liquid and gas flow through the housing 1, respectively, and finally converge at the injection hole 11a. The liquid delivery path and the gas delivery path can be two independent channels spaced apart from each other, or the two channels can be arranged coaxially. For example, the gas delivery path can be spaced apart from the liquid delivery path. Or, for example, the liquid delivery path can be set as an annular channel surrounding the gas delivery path.

[0053] When the treatment head 100 of this embodiment is applied to skin treatment devices or similar treatment equipment, high-pressure air and nutrient solution can be input into the gas delivery path and liquid delivery path respectively, and converge at the spray hole 11a. The liquid film is disturbed by the air, and surface waves are generated and diffused on the liquid film under the disturbance of the air, causing the end of the liquid film to break into small liquid columns. The liquid columns are then split into fine droplets by the surface waves, forming a spray. Compared with the traditional method of gas and liquid converging in the skin treatment device before being sprayed out, the spray from the treatment head 100 of this invention can avoid the split droplets from re-merging in the treatment head 100, and the diameter of the sprayed atomized droplets is smaller, which facilitates the penetration of nutrient solution and oxygen into the dermis through pores and skin cracks, directly accelerating the oxygen supply and nutrient solution supply to the treatment area. In addition, by setting the electrode assembly 31 on the shell 1 around the spray hole 11a, this invention can simultaneously perform radio frequency treatment and nutrient solution atomization penetration, thus achieving efficient hydration, drug penetration and radio frequency energy treatment simultaneously.

[0054] Further, please refer to Figure 2 , Figure 5 and Figure 6 In one embodiment of the present invention, a spray hole 11a and a first connecting portion 111 are formed on the front shell 11. The first connecting portion 111 is arranged around the spray hole 11a, and a spray core 2 is provided in the inner cavity of the first connecting portion 111. A liquid inlet pipe 121, an air inlet pipe 122, and a second connecting portion 123 are formed on the rear shell 12. The adapter 13 includes an outer annular portion 131, an inner annular portion 132, and a connecting partition 133. The inner annular portion 132 and the outer annular portion 131 are disposed on the connecting portion 133. On the connecting partition 133, the outer annular portion 131 is spaced out on the outside of the inner annular portion 132, and the connecting partition 133 located between the inner annular portion 132 and the outer annular portion 131 has a number of air passage holes 133a. The number of air passage holes 133a are evenly distributed circumferentially along the annular gap between the inner annular portion 132 and the outer annular portion 131. Therefore, the outer annular portion 131 and the inner annular portion 132 and the number of air passage holes 133a form the first part of the gas conveying path.

[0055] In this embodiment, the housing 1 consists of a front housing 11, an adapter 13, and a rear housing 12. The front housing 11 and the rear housing 12 enclose a receiving cavity, which can accommodate a circuit board 32, a power connector 33, etc. The circuit board 32 is used to supply power to the electrode assembly 31 and control the electrode assembly 31. A spray hole 11a is formed on the front housing 11, penetrating the front housing 11 and connecting the receiving cavity to the outside. A first connecting portion 111 is formed on the side of the front housing 11 facing the rear housing 12, communicating with the spray hole 11a. The inner cavity of the first connecting portion 111 is provided with a spray core 2, which is used to accelerate the liquid flow rate. The spray core 2 is confined within the first connecting portion 111, and the output end of the spray core 2 extends into the spray hole 11a. The spray core 2 can be made of metal or alloy material to withstand high-pressure water flow. By replacing different models of spray core 2, sprays with different droplet diameters or different spray ranges can be achieved. A liquid inlet pipe 121 and an air inlet pipe 122 are formed on the side of the rear shell 12 facing away from the front shell 11. A second connecting portion 123 is formed on the side of the rear shell 12 facing the front shell 11. The second adapter 13 communicates with the liquid inlet pipe 121 and the air inlet pipe 122. The adapter 13 includes an outer annular portion 131, an inner annular portion 132, and a connecting partition 133. The outer annular portion 131 is sleeved outside the inner annular portion 132. The connecting partition 133 connects the inner annular portion 132 and the outer annular portion 131. The connecting partition 133 is provided with a plurality of air passage holes 133a. Therefore, the air passage holes 133a connect the gap between the outer annular portion 131 and the inner annular portion 132 and form a space for gas to pass through. The annular gap between the outer annular portion 131 and the inner annular portion 132 and the plurality of air passage holes 133a form the first part of the gas delivery path.

[0056] The connection between the front shell 11 and the rear shell 12 can be achieved through fastener connection, snap-fit, or other methods. In this embodiment, the shell 1 is configured to be detachably connected by the front shell 11 and the rear shell 12. Therefore, it is convenient to install electronic components such as the circuit board 32 inside the shell 1 for controlling the electrode assembly 31 and supplying power to the electrode assembly 31. It is also convenient to disassemble for maintenance and replacement. Placing these electronic components inside the shell 1 also helps to save space and facilitates the miniaturization design of the processing head 100.

[0057] Further, please refer to Figure 4 , Figures 6 to 8 In one embodiment of the present invention, the spray core 2 is provided with a plurality of strip grooves 2d in the circumferential direction. The spray core 2 abuts against the inner wall of the first connecting part 111. The inner wall of the strip grooves 2d and the inner wall of the first connecting part 111 form the second part of the gas delivery path.

[0058] In this embodiment, in order to make the spray core 2 more stably installed in the inner cavity of the first connecting part 111 and to prevent the spray core 2 from shaking during liquid spraying, which would lead to a decrease in sealing performance or liquid discharge stability, this embodiment controls the outer diameter of the spray core 2 and the inner diameter of the first annular part so that the outer wall of the spray core 2 slides against the inner wall of the first connecting part 111. In this way, while ensuring that the spray core 2 can slide smoothly into the inner cavity of the first connecting part 111, the outer wall of the spray core 2 and the inner wall of the first connecting part 111 abut against each other to provide support, avoid the spray core 2 shaking, and ensure the sealing performance and liquid discharge stability of the spray core 2. In addition, to maintain the unobstructed gas delivery path, a plurality of strip grooves 2d are provided on the circumferential outer wall of the nozzle 2. These strip grooves 2d extend axially along the nozzle 2. The inner wall of each strip groove 2d and the inner wall of the first connecting portion 111 enclose a portion of the gas delivery path. That is, the gap between the first connecting portion 111 and the nozzle 2 (including the strip grooves 2d) are sequentially connected to form the second part of the gas delivery path. This ensures the unobstructed gas delivery channel and effectively enhances the stability of the nozzle 2 within the first connecting portion 111. It should be noted that in this embodiment, "a plurality of strip grooves 2d" refers to one or more strip grooves 2d. Understandably, when the nozzle 2 abuts against the inner wall of the first connecting portion 111, at least one strip groove 2d is required to ensure the unobstructed gas delivery path.

[0059] Further, please refer to Figure 4 and Figure 5 In one embodiment of the present invention, one end of the outer annular portion 131 is sealed and sleeved on the outside of the first connecting portion 111, and the other end of the outer annular portion 131 is sealed and sleeved on the outside of the second connecting portion 123; one end of the inner annular portion 132 is sealed and sleeved on the spray core 2, and the other end of the inner annular portion 132 is sealed and embedded in the mounting hole of the second connecting portion 123 and communicates with the liquid inlet pipe 121.

[0060] In this embodiment, to ensure smooth communication and airtightness of the air inlet pipe 122, second connecting part 123, outer annular part 131, and first connecting part 111 during the assembly of the front shell 11, adapter 13, and rear shell 12, and to avoid setting up a complex docking and positioning structure, one end of the outer annular part 131 is sleeved on the first connecting part 111, and the other end of the outer annular part 131 is sealed and sleeved on the second connecting part 123. At the same time, to ensure smooth communication and airtightness of the liquid inlet pipe 121, inner annular part 132, and spray core 2 during the connection of the front shell 11, adapter 13, and rear shell 12, one end of the inner annular part 132 is sealed and sleeved on the spray core 2, and the other end of the inner annular part 132 is sealed and embedded in the mounting hole of the second connecting part 123 and communicates with the liquid inlet pipe 121. Thus, the nozzle 2 can be placed into the first adapter 13 first, and then the front shell 11, adapter 13 and rear shell 12 can be sleeved together. During this process, the two ends of the outer annular part 131 are respectively sealed and sleeved on the outside of the first connecting part 111 and the second connecting part 123 to achieve the airtightness of the gas delivery path. Simultaneously, one end of the inner annular part 132 is sealed and embedded in the mounting hole of the second connecting part 123, and the other end is sleeved on the outside of the nozzle 2. The liquid inlet pipe 121, the mounting hole of the second connecting part 123, the inner annular part 132 of the adapter 13 and the nozzle 2 located at the spray hole 11a are connected to form a liquid delivery path, and the first part and the second part of the gas delivery path are arranged around the liquid delivery path.

[0061] Therefore, in this embodiment, by setting a connecting component 13 inside the housing 1 to connect the upper and lower parts, and sealing it with the front housing 11 and the rear housing 12, the gas delivery path is arranged around the liquid delivery path by the connecting component 13, so as to achieve mutual isolation between the gas delivery path and the liquid delivery path. Moreover, the assembly process is simple and quick, improving assembly efficiency and reliability, and improving the maintainability of the product.

[0062] Further, please refer to Figure 2 , Figure 5 and Figure 6 In one embodiment of this utility model, the outer wall of the spray core 2 is fitted with a first sealing ring 41, which is sealed to the inner annular portion 132; the first connecting portion 111 is fitted with a second sealing ring 42, which is sealed to the outer annular portion 131; the inner annular portion 132 is fitted with a third sealing ring 43, which is sealed to the liquid inlet pipe 121; and the second connecting portion 123 is fitted with a fourth sealing ring 44, which is sealed to the outer annular portion 131.

[0063] In this embodiment, a first sealing ring 41 is fitted onto the outer wall of the spray core 2 to seal the first sealing ring 41 to the inner annular portion 132, and a third sealing ring 43 is fitted onto the inner annular portion 132 to seal the third sealing ring 43 to the liquid inlet pipe 121, ensuring the isolation between the liquid delivery path and the gas delivery path and preventing liquid leakage. A second sealing ring 42 is fitted onto the first connecting portion 111 to seal the second sealing ring 42 to the outer annular portion 131, and a fourth sealing ring 44 is fitted onto the second connecting portion 123 to seal the fourth sealing ring 44 to the outer annular portion 131, ensuring the sealing between the gas delivery path and the receiving cavity and preventing gas leakage. This dual-sealing design of the gas and liquid paths in this embodiment improves the sealing performance of the gas and liquid delivery paths of the processing head 100 and ensures gas-liquid isolation before spraying, enhancing its reliability and stability during use.

[0064] Further, please refer to Figure 2 , Figure 5 and Figure 6 In one embodiment of the present invention, an annular boss 21 is formed on the outer wall of the spray core 2, and a first sealing ring 41 abuts against the annular boss 21 and the end of the inner annular portion 132 near the spray core 2; a first step portion 1111 is formed on the outer wall of the first connecting portion 111, and a second step portion 1311 is formed on the end of the outer annular portion 131 near the first connecting portion 111, and a second sealing ring 42 abuts against the first step portion 1111 and the second step portion 1311; a first annular groove 132a is formed on the outer wall of the end of the inner annular portion 132 away from the spray core 2, and a third sealing ring 43 is limited to the first annular groove 132a; a second annular groove 123a is formed on the outer wall of the second connecting portion 123; and a fourth sealing ring 44 is limited to the second annular groove 123a.

[0065] In this embodiment, to further enhance the sealing performance of the liquid circuit, an annular boss 21 is formed on the outer wall of the nozzle 2 near the rear shell 12. The first sealing ring 41 is sleeved on the outer wall of the nozzle 2 and located on the side of the annular boss 2 facing the rear shell 12. When the front shell 11, the adapter 13 and the rear shell 12 are assembled in sequence, under the action of the installation external force along the axial direction of the nozzle 2, the nozzle 2 is inserted into the inner annular portion 132, and the annular boss 21 presses the first sealing ring 41 against the inner annular portion 132. That is, the first sealing ring 41 abuts against the annular boss 21 and the end of the inner annular portion 132 near the nozzle 2. Therefore, the first sealing ring 41 is deformed by pressure and fills the gap between the nozzle 2 and the inner annular portion 132, thereby enhancing the sealing performance between the nozzle 2 and the inner annular portion 132. Similarly, a first step portion 1111 is formed on the outer wall of the first connecting portion 111, and a second step portion 1311 is formed at the end of the outer annular portion 131 near the first connecting portion 111. Under the action of the installation external force along the axial direction of the spray core 2, the second sealing ring 42 abuts against the first step portion 1111 and the second step portion 1311. Therefore, the second sealing ring 42 is deformed by pressure and fills the gap between the first connecting portion 111 and the outer annular portion 131, thereby strengthening the sealing between the first connecting portion 111 and the outer annular portion 131.

[0066] In addition, to strengthen the limiting of the sealing ring and prevent it from moving or falling off during the insertion process, thus affecting the sealing performance, this embodiment forms a first annular groove 132a on the outer wall of the end of the inner annular portion 132 away from the spray core 2. The third sealing ring 43 is confined within the first annular groove 132a. Under the mechanical limiting of the inner wall of the first annular groove 132a, the third sealing ring 43 is not easily detached from the inner annular portion 132. Similarly, a second annular groove 123a is formed on the outer wall of the second connecting portion 123, and the fourth sealing ring 44 is confined within the second annular groove 123a. Under the mechanical limiting of the inner wall of the second annular groove 123a, the fourth sealing ring 44 is not easily detached from the second connecting portion 123. The cross-section of the first annular groove 132a and the second annular groove 123a can be set as rectangular, semi-circular, or arc-shaped, etc., and this embodiment is not limited thereto.

[0067] In this embodiment, within the housing 1 of the processing head 100, the gas delivery path is arranged to surround the liquid delivery path. Specifically, outside the housing 1, the liquid inlet pipe 121 and the air inlet pipe 122 are arranged adjacent to each other. Inside the housing 1, the liquid inlet portion, composed of the inner annular member and the spray core 2, and the air inlet portion, composed of the first connecting portion 111, the outer annular portion 131, and the second connecting portion 123, are both annular, and the liquid inlet portion is located inside the air inlet portion. Therefore, within the housing 1, the gas delivery path is arranged to surround the liquid delivery path. Thus, when the gas and liquid converge at the liquid inlet hole, the gas surrounds the liquid and fully contacts and collides with it, improving the droplet breaking effect and obtaining smaller droplets, which are easier to penetrate into the dermis through pores and skin cracks.

[0068] Further, please refer to Figure 2 , Figure 4 and Figure 6 In one embodiment of the present invention, the first connecting part 111, the outer annular part 131 and the second connecting part 123 are coaxially arranged; and / or, the spray core 2, the inner annular part 132 and the liquid inlet pipe 121 are coaxially arranged.

[0069] In this embodiment, the first connecting part 111, the outer annular part 131, and the second connecting part 123 are sequentially connected and coaxially arranged to form part of the air intake section. Therefore, the gas delivery path formed in the air intake section is linear, reducing the obstruction to gas flow and facilitating high-speed gas flow. The spray core 2, the inner annular part 132, and the liquid inlet pipe 121 are sequentially connected and coaxially arranged to form the liquid inlet section. Therefore, the liquid inlet path formed in the liquid inlet section is linear, reducing the obstruction to liquid flow and facilitating high-speed liquid flow. Thus, through the above arrangement, the liquid and gas in the treatment head 100 of this embodiment can flow at high speed and collide with each other, resulting in a smaller diameter atomized droplets. This facilitates the penetration of nutrient solution and oxygen into the dermis through pores and skin cracks, directly accelerating the oxygen and nutrient solution supply to the treatment area.

[0070] Further, please refer to Figure 2 and Figure 3 In one embodiment of the present invention, the inner cavity of the spray core 2 includes a first cavity segment 2a, a second cavity segment 2b and a third cavity segment 2c connected sequentially along the direction from the rear shell 12 to the front shell 11. The inner diameter of the first cavity segment 2a is larger than the inner diameter of the third cavity segment 2c, and the second cavity segment 2b gradually contracts along the direction from the first cavity segment 2a to the third cavity segment 2c.

[0071] Correspondingly, the inner cavity of the first connecting part 111 includes a conveying cavity section 111a and a contraction cavity section 111b that are sequentially connected along the direction from the rear shell 12 to the front shell 11. The conveying cavity section 111a is connected to the inner cavity of the outer annular part 131, and the contraction cavity section 111b is connected to the injection hole 11a. The contraction cavity section 111b gradually contracts along the direction from the rear shell 12 to the front shell 11.

[0072] In this embodiment, in order to achieve more efficient liquid delivery and better atomization effect, the inner cavity of the spray core 2 in this embodiment includes a first cavity segment 2a, a second cavity segment 2b, and a third cavity segment 2c that are sequentially connected along the direction from the rear shell 12 to the front shell 11. The inner diameter of the first cavity segment 2a is larger than the inner diameter of the third cavity segment 2c, and the second cavity segment 2b gradually contracts along the direction from the first cavity segment 2a to the third cavity segment 2c. The first chamber 2a is connected to the inner cavity of the infusion tube to input nutrient solution into the spray core 2. The third chamber 2c is connected to the spray hole 11a. The inner diameter of the third chamber 2c is smaller than that of the first chamber 2a. The second chamber 2b connects the first chamber 2a and the third chamber 2c and gradually contracts along the direction from the first chamber 2a to the third chamber 2c to form a conical space. This causes the flow rate of the liquid in the second chamber 2b and the third chamber 2c to gradually increase, eventually forming a high-speed spray at the spray hole 11a. The spray force is increased, so the impact force between the liquid and the gas at the spray hole 11a is greater, which further improves the droplet breaking effect and makes the diameter of the sprayed atomized droplets smaller. This makes it easier for the nutrient solution and oxygen to penetrate into the dermis through pores and skin cracks, directly accelerating the oxygen supply and nutrient solution supply to the treatment area.

[0073] Similarly, the inner cavity of the first connecting part 111 includes a conveying cavity section 111a and a contraction cavity section 111b connected sequentially along the direction from the rear shell 12 to the front shell 11. The conveying cavity section 111a is connected to the inner cavity of the second air tube, and the contraction cavity section 111b is connected to the injection hole 11a. The contraction cavity section 111b gradually contracts along the direction from the conveying cavity section 111a to the injection hole 11a. Due to the gradual contraction of the contraction cavity section 111b, the gas flow rate gradually increases, eventually forming a high-speed jet at the injection hole 11a. This design not only improves the jetting force of liquid and gas, but also allows the liquid and gas to mix more fully at the injection hole 11a, further improving the droplet breaking effect, making the diameter of the sprayed atomized droplets smaller, which facilitates the penetration of nutrient solution and oxygen into the dermis through pores and skin cracks, directly accelerating the oxygen and nutrient solution supply to the treatment area.

[0074] This utility model also proposes a skin treatment device, which includes a handle and a treatment head as described in any of the above embodiments, wherein the handle includes a gripping housing, and the treatment head is connected to the gripping housing. Since this skin treatment device adopts all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated further here.

[0075] Specifically, the gripping housing contains a liquid supply pipe and an air supply pipe. A liquid storage tank is located at the end of the gripping housing furthest from the processing head 100. The liquid supply pipe connects the liquid storage tank to the liquid inlet on the processing head 100, and the air supply pipe connects an external air pump to the air inlet pipe 122 on the processing head 100. A power connector 33 is located at the end of the processing head 100 furthest from the spray hole 11a. One end of the power connector 33 is fixedly connected to the housing 1 of the processing head 100 and electrically connected to the circuit board 32 inside the processing head 100. The circuit board 32 inside the processing head 100 is electrically connected to the positive and negative electrodes of the electrode assembly 31, respectively. The other end of the power connector 33 is connected to a power supply module inside the gripping housing, thus providing power to the electrode assembly 31. The housing 1 of the processing head 100 can be connected to the gripping housing via fasteners, snap-fit ​​structures, etc.

[0076] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A processing head coupled to a radio frequency generator in a skin treatment device, characterized in that, The processing head includes: A housing (1), comprising a front housing (11) and a rear housing (12), the front housing (11) having a jet hole (11a) and an electrode assembly (31) for electrically connecting the radio frequency generator to heat the skin; the rear housing (12) having a liquid inlet pipe (121) and an air inlet pipe (122); and The adapter (13) is disposed inside the housing (1) and connects the front housing (11) and the rear housing (12); The air inlet pipe (122), the adapter (13), and the injection hole (11a) are connected to form a gas delivery path for injecting high-pressure gas. The inlet pipe (121), the adapter (13), and the spray hole (11a) are connected to form a liquid delivery path for spraying moisturizing liquid; The liquid delivery path and the gas delivery path converge at the injection hole (11a) and the gas-liquid mixture after the high-pressure gas breaks up the liquid is sprayed onto the skin through the injection hole (11a).

2. The processing head as described in claim 1, characterized in that, The front shell (11) includes a first connecting part (111), which is arranged around the injection hole (11a). The inner cavity of the first connecting part (111) includes a nozzle (2) located at the injection hole (11a). The rear shell (12) includes a second connecting portion (123) disposed around the air intake pipe (122) and the air intake pipe (122); The adapter (13) includes an outer annular portion (131), an inner annular portion (132), and a connecting partition (133). The inner annular portion (132) and the outer annular portion (131) are disposed on the connecting partition (133). The outer annular portion (131) is spaced out and sleeved on the outside of the inner annular portion (132). The connecting partition (133) located between the inner annular portion (132) and the outer annular portion (131) has a plurality of air passage holes (133a). The space between the outer annular portion (131) and the inner annular portion (132) and the plurality of air passage holes (133a) form the first part of the gas delivery path.

3. The processing head as described in claim 2, characterized in that, The nozzle (2) has a plurality of strip grooves (2d) in its circumferential direction. The nozzle (2) abuts against the inner cavity of the first connecting part (111). The inner walls of the plurality of strip grooves (2d) and the inner cavity of the first connecting part (111) form the second part of the gas delivery path.

4. The processing head as described in claim 3, characterized in that, One end of the outer annular portion (131) is sealed and sleeved on the outside of the first connecting portion (111), and the other end of the outer annular portion (131) is sealed and sleeved on the outside of the second connecting portion (123). One end of the inner annular portion (132) is sealed and fitted onto the outside of the spray core (2), and the other end of the inner annular portion (132) is sealed and fitted into the mounting hole of the second connecting portion (123) and communicates with the liquid inlet pipe (121).

5. The processing head as described in claim 4, characterized in that, The liquid inlet pipe (121), the mounting hole of the second connecting part (123), the inner annular part (132) and the nozzle (2) are connected to form the liquid delivery path; the first part and the second part of the gas delivery path are arranged around the liquid delivery path.

6. The processing head as described in claim 4, characterized in that, The outer wall of the spray core (2) is fitted with a first sealing ring (41), and the first sealing ring (41) is sealed to the inner annular part (132); The first connecting part (111) is covered with a second sealing ring (42), and the second sealing ring (42) is sealed to the outer annular part (131); The inner annular portion (132) is fitted with a third sealing ring (43), which is sealed to the liquid inlet pipe (121); The second connecting part (123) is covered with a fourth sealing ring (44), which is sealed to the outer annular part (131).

7. The processing head as described in claim 6, characterized in that, The outer wall of the spray core (2) is formed with an annular boss (21), and the first sealing ring (41) abuts against the annular boss (21) and the end of the inner annular portion (132) near the spray core (2). The outer wall of the first connecting part (111) is formed with a first step part (1111), and the end of the outer annular part (131) near the first connecting part (111) is formed with a second step part (1311). The second sealing ring (42) abuts between the first step part (1111) and the second step part (1311). The outer wall of the inner annular portion (132) away from the nozzle (2) is formed with a first annular groove (132a), and the third sealing ring (43) is located within the first annular groove (132a). The outer wall of the second connecting part (123) is formed with a second annular groove (123a); the fourth sealing ring (44) is located within the second annular groove (123a).

8. The processing head as described in claim 2, characterized in that, The inner cavity of the nozzle (2) includes a first cavity segment (2a), a second cavity segment (2b) and a third cavity segment (2c) connected sequentially along the direction from the rear shell (12) to the front shell (11). The inner diameter of the first cavity segment (2a) is larger than the inner diameter of the third cavity segment (2c). The second cavity segment (2b) gradually contracts along the direction from the first cavity segment (2a) to the third cavity segment (2c).

9. The processing head as described in claim 2, characterized in that, The inner cavity of the first connecting part (111) includes a conveying cavity section (111a) and a contraction cavity section (111b) that are sequentially connected along the direction from the rear shell (12) to the front shell (11). The conveying cavity section (111a) is connected to the inner cavity of the outer annular part (131), and the contraction cavity section (111b) is connected to the injection hole (11a). The contraction cavity section (111b) gradually contracts along the direction from the rear shell (12) to the front shell (11).

10. A skin treatment device, characterized in that, The skin treatment device includes a handle and a treatment head as described in any one of claims 1 to 9, wherein the handle includes a grip housing and the treatment head is connected to the grip housing.

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