Atmospheric pressure low temperature plasma skin treatment device

Abstract

The application discloses an atmospheric pressure low-temperature plasma skin treatment instrument and belongs to the technical field of low-temperature plasma medical treatment equipment. The device comprises a base and a treatment instrument main body, the treatment instrument main body comprises a shell, an ionization assembly is arranged in the shell, an electric spark filtering assembly is clamped and installed at the bottom of the shell, the electric spark filtering assembly comprises a filter fixing device, and an electric spark filter is fixedly installed on the inner wall of the filter fixing device. The independent conductive electric spark filtering assembly is specially arranged at the plasma jet output end, the energy of the high-energy electric spark charged particle group is neutralized and quenched through charge discharge before the high-energy electric spark charged particle group contacts the skin, the path of the electric spark contacting the skin is completely blocked at the terminal, and the safety is ensured for the pain point that a single electric spark stimulation can induce burn on the skin of a psoriasis patient.

Description

Technical Field

[0001] This invention relates to the field of low-temperature plasma medical treatment equipment technology, and in particular to an atmospheric pressure low-temperature plasma skin treatment device. Background Technology

[0002] Atmospheric pressure low-temperature plasma technology has become an important treatment for chronic inflammatory skin diseases such as psoriasis due to its advantages such as being non-invasive, non-drug-dependent, and having few side effects.

[0003] However, existing home-use atmospheric pressure low-temperature plasma skin therapy devices have a fatal safety flaw: during the coaxial dielectric barrier discharge process, due to factors such as air pressure fluctuations, voltage instability, and electrode contamination, instantaneous high-energy electric spark charged particle clusters are inevitably generated inside the tube. These particle clusters are continuously ejected from the nozzle with the directional working airflow, directly contacting the treatment area. For ordinary beauty or disinfection scenarios, these weak electric sparks usually do not cause obvious harm, but for psoriasis patients, whose skin barrier is severely damaged, a single electric spark stimulation can induce skin burns, erythema, and even trigger the isomorphic response characteristic of psoriasis, causing new lesions to appear on normal skin or exacerbating and spreading existing lesions, seriously affecting the treatment effect and patient safety. Summary of the Invention

[0004] This invention provides an atmospheric pressure low-temperature plasma skin therapy device, which can solve the problem that the electric sparks generated during the discharge process of existing plasma skin therapy devices can easily damage the skin of psoriasis patients.

[0005] This invention provides an atmospheric pressure low-temperature plasma skin therapy device, comprising a base and a main body of the device. The main body includes a shell, an ionization component is disposed inside the shell, and an electric spark filter component is snapped onto the bottom of the shell. The electric spark filter component includes a filter holder, and an electric spark filter is fixedly installed on the inner wall of the filter holder. The base is provided with a replacement component for replacing the electric spark filter component.

[0006] As a further aspect of the present invention, the electric spark filter is made of aluminum alloy mesh or aluminum foam.

[0007] As a further aspect of the present invention, the electric spark filter is configured as a hemispherical, inverted conical, or circular disc.

[0008] As a further embodiment of the present invention: the filter holder includes a fixing ring, a mating block is fixedly connected to the inner wall of the fixing ring, a mating joint is provided at the bottom of the outer shell, a guide groove is provided on the outer wall of the mating joint, the top of the guide groove is inclined and a positioning hole is provided at the top, the mating block is slidably disposed in the guide groove and can be engaged with the positioning hole.

[0009] As a further aspect of the present invention: the ionization component includes an ionization tube, an inner positive electrode is disposed inside the ionization tube, an ionization cavity is disposed between the ionization tube and the inner positive electrode, an external grounding electrode is disposed outside the ionization tube, an insulating protective layer is fixedly connected to the outer wall of the external grounding electrode, a grounding socket is opened on one side of the top of the outer shell, a grounding terminal is fixedly connected inside the grounding socket, the external grounding electrode is fixedly connected to the grounding terminal through a grounding connection wire, a positive electrode socket is disposed at the center of the top of the outer shell, and the inner positive electrode is fixedly connected to the inner wall of the positive electrode socket.

[0010] As a further aspect of the present invention: the replacement assembly includes a replacement disc, the top of which is provided with a plurality of placement slots, the inner diameter of which is the same as the diameter of the fixing ring, and a limiting block is fixedly connected to the bottom of the inner wall of the placement slot, the diameter of which is the same as the inner diameter of the fixing ring.

[0011] As a further embodiment of the present invention: a storage groove is provided on one side of the base, and the replacement disc is rotatably installed in the storage groove. The replacement disc can be completely stored in the storage groove by rotation.

[0012] As a further aspect of the present invention: an air inlet connector is fixedly connected to the other side of the top of the outer shell, an air intake pipe is fixedly connected to the bottom of the air inlet connector, a flow equalization component is fixedly connected to the bottom of the air intake pipe, and the bottom of the flow equalization component is connected to the ionization chamber.

[0013] As a further aspect of the present invention: the current equalization assembly includes a current equalization hood, a current equalization port is provided at one end of the current equalization hood near the ionization assembly, a current equalization ring is fixedly connected to the inner wall of the current equalization port, and a plurality of equally spaced current equalization holes are opened on the edge of the current equalization ring.

[0014] As a further aspect of the present invention: the end of the flow equalization hood away from the ionization component is connected to the air intake pipe, a flow guide block is provided inside the flow equalization hood, a flow guide cavity is provided between the outer wall of the flow guide block and the inner wall of the flow equalization hood, and the bottom of the flow guide cavity is correspondingly provided with the top of the flow equalization ring.

[0015] As a further aspect of the present invention: an air pump is provided inside the base, an air supply pipe is fixedly connected to the air outlet end of the air pump, and an air intake processing assembly is provided at the air inlet end of the air pump, the air intake processing assembly including a dust removal filter, a water removal filter and an odor removal filter connected in sequence.

[0016] As a further aspect of the present invention: a pneumatic control safety component is provided between the gas supply pipe and the gas inlet pipe. The pneumatic control safety component includes a positioning sleeve, an external electric ring is embedded in the middle of the inner wall of the positioning sleeve, a flow-blocking block is fixedly connected inside the positioning sleeve, a movable sleeve is slidably fitted outside the flow-blocking block, and an internal electric ring is fixedly connected to the outer wall of the movable sleeve; a reset pusher for pushing the movable sleeve to reset is provided on one side of the inner wall of the movable sleeve, and a flow guide is fixedly connected to the other end of the inner wall of the movable sleeve. A flow guide slope is opened at the end of the flow-blocking block near the flow guide slope, and the inner wall of the flow guide is inclined and parallel to the flow guide slope.

[0017] As a further aspect of the present invention: a flow guide cone is fixedly connected to one end of the flow guide block near the gas supply pipe; the flow guide block is fixedly connected to the inner wall of the positioning sleeve by a plurality of fixing rods; a docking sleeve is fixedly connected to the middle part of one end of the flow guide block near the air inlet pipe; the diameter of the docking sleeve is smaller than the diameter of the air inlet pipe.

[0018] As a further embodiment of the present invention: the reset pusher includes a plurality of connecting rods, the outer wall of the baffle block is provided with a plurality of movable grooves, the inner walls of the plurality of movable grooves are slidably connected with connecting blocks, the bottom of the connecting blocks and the end of the inner wall of the movable grooves are fixedly connected with reset springs, and the plurality of connecting rods are respectively fixedly connected to the plurality of blocks.

[0019] As a further aspect of the present invention: a support frame is fixedly connected to one side of the base, a support groove is provided in the middle of the support frame, and an anti-slip pad is fixedly connected to the inner wall of the support groove.

[0020] As a further embodiment of the present invention: a base plate is fixedly connected to the bottom of the base, a support frame is fixedly connected to one side of the top of the base plate, an end cover is rotatably connected to the inner wall of the support frame, a dust cover is engaged at the bottom of the fixing ring, an anti-slip pad is fixedly connected to the top, an end cover is rotatably connected to one side of the support frame, a dust cover is engaged at the bottom of the fixing ring, and the inner diameter of the end cover is slightly larger than the diameter of the dust cover.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention, by specially setting an independent conductive electric spark filter component at the plasma jet output end, neutralizes and dissipates the energy of the high-energy electric spark charged particle clusters through charge conduction before they come into contact with the skin, thereby blocking the path of electric spark contact with the skin. This provides a safety guarantee for the problem that the skin barrier of psoriasis patients is easily damaged and can be induced by a single electric spark stimulation; at the same time, it completely preserves the low-energy therapeutic active nitrogen and oxygen ions, so as not to lose the therapeutic effect while achieving spark protection. This invention sets up a purely mechanical pneumatic safety component in the base air circuit, and uses airflow pressure to push the movable sleeve to realize the physical opening and closing of the circuit, thereby forcing the implementation of the safety logic of first opening the air and then opening the power, and cutting off the air must cut off the power first, thus eliminating the risk of electrical sparks generated by dry discharge without airflow. This invention rectifyes and homogenizes the airflow entering the ionization cavity by setting up a flow equalization component, avoiding discharge instability caused by airflow turbulence, and improving the consistency and stability of glow discharge from the source; by using equidistant flow equalization holes on the flow equalization ring, the concentrated airflow is dispersed into multiple uniform small airflows, so that the airflow distribution in the ionization cavity is uniform, ensuring that the glow discharge intensity of the entire ionization region is consistent, and avoiding excessive local discharge that will generate electric sparks. Attached Figure Description

[0022] Figure 1 This is a perspective view of the main body of the therapeutic device of the present invention; Figure 2 This is a cross-sectional schematic diagram of the main body of the therapeutic device of the present invention; Figure 3 This is a schematic diagram of the structure of the electric spark filter assembly of the present invention; Figure 4 This is a schematic diagram showing the shape classification of the electric spark filter of the present invention; Figure 5 This is a cross-sectional schematic diagram of the flow equalization component of the present invention; Figure 6 This is a three-dimensional schematic diagram of the skin treatment device of the present invention; Figure 7 This is a three-dimensional schematic diagram of the base of the present invention; Figure 8 This is a schematic diagram of the internal structure of the base of the present invention; Figure 9 This is a cross-sectional schematic diagram of the pneumatic safety component of the present invention; Figure 10 This is a schematic diagram of the working state of the pneumatic safety component of the present invention. Explanation of reference numerals in the attached figures: 1. Main body of the therapeutic instrument; 101. Outer shell; 102. Insulating protective layer; 103. Ionization tube; 104. Inner positive electrode; 105. Ionization chamber; 106. External grounding electrode; 107. Air inlet connector; 108. Positive electrode socket; 109. Grounding socket; 110. Air duct; 111; 112. Connecting connector; 113. Fixing ring; 114. Guide groove; 115. Positioning hole; 116. Spark filter; 117. Connecting block; 118. Dust cover; 2. Flow equalization assembly; 201. Flow equalization hood; 202. Flow equalization ring; 203. Flow equalization hole; 204. Drainage block; 301. Base; 302. Base plate 303. Support frame; 304. Support bracket; 305. End cover; 306. Replacement plate; 307. Placement slot; 308. Lifting handle; 309. Limit sleeve; 310. Gas supply pipe; 311. Air pump; 312. Deodorizing filter; 313. Water removal filter; 314. Dust removal filter; 4. Pneumatic control safety components; 401. Positioning sleeve; 402. Baffle block; 403. Fixing rod; 404. Drain cone; 405. Connecting rod; 406. Connecting block; 407. Return spring; 408. Inner electric ring; 409. Outer electric ring; 410. Movable sleeve; 411. Flow guide; 412. Connecting sleeve. Detailed Implementation

[0023] The specific embodiments of the present invention will be described in detail below, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0024] like Figure 6 As shown in the figure, the present invention provides an atmospheric pressure low-temperature plasma skin therapy device, including a base 301 and a therapy device body 1. Please refer to [link to relevant documentation]. Figures 1-2 The main body 1 of the therapeutic device includes a housing 101, an ionization component is disposed inside the housing 101, and an electric spark filter assembly is snapped into place at the bottom of the housing 101. The electric spark filter assembly includes a filter holder. Please refer to [link to relevant documentation]. Figures 2-3 An electric spark filter 116 is fixedly installed on the inner wall of the filter holder; a replacement component for replacing the electric spark filter assembly is provided on the base 301; this solution, by setting a conductive electric spark filter 116 at the output end through which the jet must pass, can completely neutralize and quench the energy of high-energy particle clusters before they come into contact with the skin through charge discharge, while completely preserving low-energy therapeutic active nitrogen and oxygen species, improving operational safety and ensuring treatment effect; furthermore, this application adopts a split design, integrating the heavy and noisy air pump 311 and electronic control module into the base 301, achieving extreme lightweight handheld end; the base 301 integrates a replacement component that can simultaneously store multiple sets of spare electric spark filters 116 of different specifications, making it convenient for users to replace them according to their needs.

[0025] In one embodiment, the electric spark filter 116 is made of aluminum alloy mesh or aluminum foam. The aluminum alloy mesh or aluminum foam guides away the charge of high-energy charged particle clusters, thereby achieving the core safety function of intercepting electric sparks and retaining therapeutic low-temperature plasma. The aluminum foam material has a three-dimensional porous structure, which has better air permeability and significantly reduces air outlet resistance, stabilizes the back pressure inside the tube, and reduces the quenching of active particles in the air, thereby increasing the concentration of active nitrogen and oxygen species reaching the skin.

[0026] In one embodiment, see Figure 4 The electric spark filter 116 is configured as a circular disc, a hemispherical shape, or an inverted conical shape, respectively corresponding to... Figure 4 (a) Figure 4 (b) and Figure 4 (c) By adjusting the shape of the plasma jet after exiting the nozzle through different shapes and structures, the treatment needs of psoriasis lesions in different locations can be adapted without changing the discharge state inside the tube: the hemispherical diffusion jet is suitable for large-area conventional plaques on the trunk and limbs, achieving rapid and uniform treatment; the inverted cone-shaped converging jet is suitable for thickened and stubborn plaques, increasing the local concentration and penetration of active particles; the disc-shaped jet disperses the jet gently, suitable for delicate areas such as the face, reducing airflow impact and avoiding irritation to damaged skin.

[0027] In one embodiment, see Figure 2 and Figure 3 The filter holder includes a fixing ring 113, with a mating block 117 fixedly connected to the inner wall of the fixing ring 113. A mating connector 112 is provided at the bottom of the outer shell 101. A guide groove 114 is provided on the outer wall of the mating connector 112. The top of the guide groove 114 is inclined and has a positioning hole 115. The mating block 117 is slidably disposed in the guide groove 114 and can engage with the positioning hole 115. The mechanical rotational engagement structure of the guide groove 114 and the positioning hole 115 allows for easy installation and removal of the electric spark filter 116 by simply inserting and rotating it, without any tools. The inclined guide groove 114 and the positioning hole 115 cooperate to ensure automatic locking after installation, preventing the electric spark filter 116 from falling off during use, while ensuring air circuit sealing and avoiding back pressure fluctuations and unstable discharge caused by air leakage.

[0028] In one embodiment, see Figure 2The ionization assembly includes an ionization tube 103, an inner positive electrode 104 inside the ionization tube 103, an ionization cavity 105 between the ionization tube 103 and the inner positive electrode 104, an external grounding electrode 106 outside the ionization tube 103, and an insulating protective layer 102 fixedly connected to the outer wall of the external grounding electrode 106. A grounding socket 109 is provided on one side of the top of the outer shell 101, and a grounding terminal is fixedly connected inside the grounding socket 109. The external grounding electrode 106 is fixedly connected to the grounding terminal through a grounding connection wire. A positive electrode socket 108 is provided at the center of the top of the outer shell 101, and the inner positive electrode 104 is fixedly connected to the inner wall of the positive electrode socket 108. A coaxial dielectric barrier discharge structure is adopted, and glow discharge stably occurs inside the ionization cavity 105, generating low-temperature plasma that meets the treatment requirements. Independent positive and negative electrode sockets and grounding design ensure the reliability and safety of electrical connections. The insulating protective layer 102 completely covers the external grounding electrode 106 to prevent leakage during handheld use and improve operational safety.

[0029] In one embodiment, see Figure 6 and Figure 7 The replacement assembly includes a replacement tray 306, with several placement slots 307 on the top. The inner diameter of the placement slots 307 is the same as the diameter of the fixing ring 113. A limiting block is fixedly connected to the bottom of the inner wall of the placement slots 307, and the diameter of the limiting block is the same as the inner diameter of the fixing ring 113. The placement slots 307 and the limiting blocks cooperate to stably fix spare EDM filter sheets 116 of different shapes, preventing them from shaking and being damaged during storage. When replacing, the old EDM filter sheet 116 can be directly placed into the empty placement slot 307, and then another EDM filter sheet 116 can be taken out and installed. The operation process is simple and avoids the EDM filter sheet 116 from coming into contact with the outside world and causing contamination.

[0030] In one embodiment, a storage slot is provided on one side of the base 301, and the replacement disc 306 is rotatably installed in the storage slot. The replacement disc 306 can be completely stored in the storage slot by rotating. The rotating storage structure allows the replacement disc 306 to be completely hidden inside the base 301 when not in use, keeping the overall appearance of the device clean and preventing dust from entering and contaminating the spare overcurrent spark filter 116. When in use, it can be quickly taken out by rotating it out without taking up extra space, which is better suited to portable use scenarios.

[0031] In one embodiment, see Figure 2 and Figure 5An air inlet connector 107 is fixedly connected to the top of the outer casing 101. An air intake pipe 110 is fixedly connected to the bottom of the air inlet connector 107. A flow equalization component 2 is fixedly connected to the bottom of the air intake pipe 110. The bottom of the flow equalization component 2 is connected to the ionization chamber 105. The air intake pipe 110 stably guides the airflow output from the air pump 311 of the base 301 into the handheld main body. The flow equalization component 2 rectifies and homogenizes the airflow entering the ionization chamber 105, avoiding unstable discharge caused by airflow turbulence, and improving the consistency of glow discharge from the source. Stability; The flow equalization assembly 2 includes a flow equalization hood 201. A flow equalization port is provided at one end of the flow equalization hood 201 near the ionization assembly. A flow equalization ring 202 is fixedly connected to the inner wall of the flow equalization port. Several equidistant flow equalization holes 203 are opened on the edge of the flow equalization ring 202. The concentrated airflow is dispersed into multiple uniform small airflows by using the equidistant flow equalization holes 203 on the flow equalization ring 202, so that the airflow distribution in the ionization cavity 105 is uniform, ensuring that the glow discharge intensity of the entire ionization region is consistent and avoiding excessive local discharge that could generate electric sparks.

[0032] In one embodiment, the end of the flow equalization hood 201 away from the ionization component is connected to the air intake pipe 110. The flow equalization hood 201 is provided with a flow guide block 204 inside. A flow guide cavity is provided between the outer wall of the flow guide block 204 and the inner wall of the flow equalization hood 201. The bottom of the flow guide cavity is correspondingly provided with the top of the flow equalization ring 202. The flow guide block 204 guides the concentrated airflow input from the air intake pipe 110 to the surrounding flow guide cavity, and then evenly distributes it to each flow equalization hole 203 of the flow equalization ring 202, further improving the airflow homogenization effect, eliminating airflow dead zones, ensuring uniform and stable air pressure in the ionization chamber 105, and maintaining the glow discharge steady state.

[0033] In one embodiment, see Figure 8 An air pump 311 is installed inside the base 301. An air supply pipe 310 is fixedly connected to the air outlet end of the air pump 311. An air intake treatment assembly is installed at the air inlet end of the air pump 311. The air intake treatment assembly includes a dust filter 314, a water filter 313, and an odor filter 312 connected in sequence. The three-stage air intake pretreatment system removes large particles of dust, water vapor, and organic matter from the air in sequence. It reduces electrode contamination, discharge drift, and electric spark generation caused by dust and water vapor entering the ionization chamber 105. It also reduces ozone and odor generated by the ionization of organic matter, improving user comfort. At the same time, it reduces the deposition of pollutants on the electric spark filter 116, extends the service life of the electric spark filter 116, and stabilizes the outlet back pressure.

[0034] In one embodiment, see Figure 9A pneumatic safety component 4 is provided between the gas supply pipe 310 and the air inlet pipe. The pneumatic safety component 4 includes a positioning sleeve 401, an external electric ring 409 embedded in the middle of the inner wall of the positioning sleeve 401, a flow-blocking block 402 fixedly connected inside the positioning sleeve 401, a movable sleeve 410 slidably sleeved outside the flow-blocking block 402, and an internal electric ring 408 fixedly connected to the outer wall of the movable sleeve 410. A reset pusher is provided on one side of the inner wall of the movable sleeve 410 for pushing the movable sleeve 410 to reset. A flow guide shroud 411 is fixedly connected to the other end of the inner wall of the movable sleeve 410. A flow guide slope is provided at one end of the baffle block 402 near the flow guide shroud 411. The inner wall of the flow guide shroud 411 is inclined and parallel to the flow guide slope. Through a purely mechanical pneumatic control safety structure, only when the air pressure output by the air pump 311 reaches the working threshold will the airflow push the movable sleeve 410 to compress the return spring 407 forward, causing the inner electric ring 408 to contact the outer electric ring 409, thus connecting the circuit. Please refer to the status at this time. Figure 10 In specific implementation, a spring-loaded structure can also be provided on the adjacent sidewalls of the inner electric ring 408 and the outer electric ring 409 to improve the electrical connection stability of the inner electric ring 408 and the outer electric ring 409 when they are in contact. When the air pressure is insufficient or the machine stops, the reset spring 407 pushes the movable sleeve 410 to reset, and the circuit loop is physically disconnected. This forces the system to ensure that air is supplied before power is supplied, and power is cut off before air supply is cut off, avoiding the problem of electric sparks and skin burns caused by dry discharge when there is no airflow. The mechanical triggering method makes the pneumatic safety component 4 highly reliable in harsh operating environments. At the same time, the pneumatic safety component 4 can also stabilize the airflow speed within a certain range, improving the uniformity of plasma delivery.

[0035] In one embodiment, a guide cone 404 is fixedly connected to one end of the guide block near the air supply pipe 310. The guide cone 404 cooperates with the guide slope to guide the airflow to smoothly push the movable sleeve 410 to move, reducing airflow resistance. The guide block is fixedly connected to the inner wall of the positioning sleeve 401 by several fixed rods 403. The structure of the fixed rods 403 ensures the stability of the position of the baffle block 402, thereby making the gap between the guide block and the inner cavity of the positioning sleeve 401 stable and not affecting the normal flow of airflow. A docking sleeve 412 is fixedly connected to the middle of one end of the guide block near the air inlet pipe. The diameter of the docking sleeve 412 is smaller than the diameter of the air inlet pipe. The docking sleeve 412 is designed to ensure the sealed connection between the air supply pipe 310 and the air control safety component 4, avoiding insufficient air pressure caused by air leakage.

[0036] In one embodiment, the reset pusher includes several connecting rods 405, and the outer wall of the baffle block 402 is provided with several movable slots. The inner walls of the movable slots are slidably connected to connecting blocks 406. The bottom of the connecting blocks 406 and the end of the inner wall of the movable slots are fixedly connected to reset springs 407. The multiple sets of reset springs 407 are evenly distributed to ensure that the movable sleeve 410 is subjected to uniform force and moves smoothly. The movable slots cooperate with the connecting blocks 406 to limit the movement stroke of the movable sleeve 410 and prevent excessive displacement. The elastic force of the reset springs 407 is precisely matched with the working air pressure threshold to ensure that the circuit is accurately connected when the air pressure meets the standard and quickly disconnected when the air pressure is insufficient.

[0037] In one embodiment, several connecting rods 405 are respectively fixedly connected to one side of several block fixed connection bases 301 with support frames 303. The support frame 303 has a support groove in the middle, and the inner wall of the support groove is fixedly connected with an anti-slip pad. The support frame 303 cooperates with the support groove to stably place the handheld treatment body and avoid collision damage caused by random placement during use or transportation.

[0038] In one embodiment, a lifting handle 308 is fixedly connected to the top center of the base 301; a limiting sleeve 309 for the air intake pipe to pass through is fixedly connected to one side of the top of the base 301; a base plate 302 is fixedly connected to the bottom of the base 301; a support bracket 304 is fixedly connected to one side of the top of the base plate 302; an end cover 305 is rotatably connected to the inner wall of the support bracket 304; a dust cover 118 is engaged with the bottom of the fixing ring 113; and the inner diameter of the end cover 118 is slightly larger than that of the dust cover 118. With a diameter of 8, when not in use, the dust cover 118 can be snapped onto the bottom of the fixing ring 113 of the spark filter 116 to prevent dust and moisture from entering the ionization tube 103 and the spark filter 116; the end cover 305 can store the spare dust cover 118, and at the same time, when the main body is placed on the support frame 303, it covers the end of the spark filter 116 to further improve the dustproof effect, ensure that the inside of the equipment is clean when it is idle for a long time, and avoid abnormal discharge due to contamination when it is used again.

[0039] When the device is powered on and started, the air pump 311 in the base 301 starts working first. Outside air first enters the air intake treatment component and passes through the dust removal filter 314 to remove large dust particles, the water removal filter 313 to absorb water vapor, and the deodorization filter 312 to absorb odors and their sources in the air, thus obtaining clean and dry working gas. Clean gas is pressurized by air pump 311 and enters pneumatic safety component 4. The airflow pushes movable sleeve 410 to compress reset spring 407 and move forward. When the gas pressure reaches the rated working threshold required for glow discharge, inner electric ring 408 contacts outer electric ring 409 and connects the power supply circuit. Subsequently, the airflow enters the air inlet connector 107 of the handheld treatment unit through the air supply pipe 310, and is guided into the flow equalization component 2 through the air duct 110. The flow block 204 guides the concentrated airflow to the surrounding flow cavities, and then disperses it into multiple uniform airflows through the equidistant flow equalization holes 203 on the flow equalization ring 202, which smoothly enter the ionization chamber 105. At this time, it is delivered to the inner positive electrode 104 for power connection through the positive electrode socket 108, and the outer grounding electrode 106 is reliably grounded through the grounding terminal. The high-frequency high-voltage electric field between the inner and outer electrodes causes the clean air in the ionization chamber 105 to generate electricity. Uniform glow discharge generates low-temperature plasma containing active nitrogen and oxygen species; the plasma moves towards the nozzle with the directional airflow, and all the high-energy electric spark charged particle clusters carried out with the airflow pass through the conductive electric spark filter 116 at the nozzle before contacting the skin. The electric spark filter 116 completely neutralizes and quenches the electric spark energy through charge discharge, while completely preserving the low-energy therapeutic active particles. Different shaped electric spark filters 116 can also adjust the jet to a diffused, focused, or soft shape to adapt to different skin lesions. If insufficient air pressure causes the air pump 311 to stop during treatment, resulting in insufficient air supply, the reset spring 407 will immediately push the movable sleeve 410 to reset, physically disconnecting the circuit and eliminating the risk of electrical sparks generated by dry discharge without airflow. During treatment, users can quickly replace different specifications of over-spark filter 116 through the rotating replacement disc 306 on the base 301. When not in use, the dust cover 118 is snapped into the bottom of the over-spark filter 116 fixing ring 113, and the handheld body is placed on the support frame 303 and the end cover 305 is fastened to prevent dust and moisture from entering the equipment and ensure stable discharge status during the next use.

[0040] The above-disclosed embodiments are merely a few specific examples of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. An atmospheric pressure low-temperature plasma skin therapy device, characterized in that, The device includes a base (301) and a treatment device body (1). The treatment device body (1) includes a shell (101). An ionization component is provided inside the shell (101). An electric spark filter component is snapped onto the bottom of the shell (101). The electric spark filter component includes a filter holder. An electric spark filter (116) is fixedly installed on the inner wall of the filter holder. The base (301) is provided with a replacement component for replacing the electric spark filter component.

2. The atmospheric pressure low-temperature plasma skin therapy device as described in claim 1, characterized in that, The electric spark filter (116) is made of aluminum alloy mesh or aluminum foam.

3. The atmospheric pressure low-temperature plasma skin therapy device as described in claim 1, characterized in that, The electric spark filter (116) is hemispherical, inverted conical, or disc-shaped.

4. The atmospheric pressure low-temperature plasma skin therapy device as described in claim 1, characterized in that, The filter holder includes a fixing ring (113), and a docking block (117) is fixedly connected to the inner wall of the fixing ring (113). A docking joint (112) is provided at the bottom of the outer shell (101). A guide groove (114) is provided on the outer wall of the docking joint (112). The top of the guide groove (114) is inclined and a positioning hole (115) is provided at the top. The docking block (117) is slidably disposed in the guide groove (114) and can engage with the positioning hole (115).

5. The atmospheric pressure low-temperature plasma skin therapy device as described in claim 1, characterized in that, The ionization assembly includes an ionization tube (103), an inner positive electrode (104) is provided inside the ionization tube (103), an ionization cavity (105) is provided between the ionization tube (103) and the inner positive electrode (104), an external grounding electrode (106) is provided outside the ionization tube (103), an insulating protective layer (102) is fixedly connected to the outer wall of the external grounding electrode (106), a grounding socket (109) is provided on one side of the top of the outer shell (101), a grounding terminal is fixedly connected inside the grounding socket (109), the external grounding electrode (106) is fixedly connected to the grounding terminal through a grounding connection line, a positive electrode socket (108) is provided at the center of the top of the outer shell (101), and the inner positive electrode (104) is fixedly connected to the inner wall of the positive electrode socket (108).

6. The atmospheric pressure low-temperature plasma skin therapy device as described in claim 1, characterized in that, The replacement assembly includes a replacement plate (306), the top of which has several placement slots (307); a storage slot is provided on one side of the base (301), the replacement plate (306) is rotatably installed in the storage slot, and the replacement plate (306) can be rotated and stored in the storage slot.

7. The atmospheric pressure low-temperature plasma skin therapy device as described in claim 1, characterized in that, An air inlet connector (107) is fixedly connected to the other side of the top of the outer shell (101). An air intake pipe (110) is fixedly connected to the bottom of the air inlet connector (107). A flow equalization assembly (2) is fixedly connected to the bottom of the air intake pipe (110). The bottom of the flow equalization assembly (2) is connected to the ionization chamber (105). The flow equalization assembly (2) includes a flow equalization hood (201). A flow equalization port is provided at one end of the flow equalization hood (201) near the ionization assembly. A flow equalization ring (202) is fixedly connected to the inner wall of the flow equalization port. Several flow equalization holes (203) are opened on the edge of the flow equalization ring (202).

8. The atmospheric pressure low-temperature plasma skin therapy device as described in claim 1, characterized in that, An air pump (311) is installed inside the base (301). An air supply pipe (310) is fixedly connected to the air outlet end of the air pump (311). An air intake processing assembly is installed at the air inlet end of the air pump (311). The air intake processing assembly includes a dust filter (314), a water filter (313), and an odor filter (312) connected in sequence.

9. The atmospheric pressure low-temperature plasma skin therapy device as described in claim 8, characterized in that, A pneumatic safety component (4) is provided between the gas supply pipe (310) and the air inlet pipe. The pneumatic safety component (4) includes a positioning sleeve (401). An external electric ring (409) is embedded in the middle of the inner wall of the positioning sleeve (401). A flow-blocking block (402) is fixedly connected inside the positioning sleeve (401). A movable sleeve (410) is slidably sleeved on the outside of the flow-blocking block (402). An internal electric ring (408) is fixedly connected to the outer wall of the movable sleeve (410). A reset pusher for pushing the movable sleeve (410) to reset is provided on one side of the inner wall of the movable sleeve (410). A flow guide (411) is fixedly connected to the other end of the inner wall of the movable sleeve (410). A flow guide slope is opened at one end of the flow-blocking block (402) near the flow guide (411). The inner wall of the flow guide (411) is inclined and parallel to the flow guide slope.

10. The atmospheric pressure low-temperature plasma skin therapy device as described in claim 9, characterized in that, The reset pusher includes several connecting rods (405), the outer wall of the baffle block (402) is provided with several movable grooves, the inner walls of several movable grooves are slidably connected with connecting blocks (406), the bottom of the connecting block (406) and the end of the inner wall of the movable groove are fixedly connected with reset springs (407), and several connecting rods (405) are respectively fixedly connected to several blocks.

Images