A portable skin disease ozone treatment device and gas path closed-loop control method

Abstract

This invention relates to the field of dermatology treatment technology, specifically to a portable ozone therapy device for skin diseases and a closed-loop airflow control method. The device includes a treatment cylinder, a sliding annular slider, an annular airbag, an air supply pump, an air extraction pump, an annular chamber, and a sealing mechanism. The treatment chamber is formed by inflating and sealing the annular airbag, and the sealing mechanism enables dual-mode switching between limb penetration and distal closure, suitable for treating skin diseases in different locations. The air supply pump and air extraction pump work together, with a three-way valve, a pressure relief valve, and pressure and ozone concentration sensors for closed-loop control, automatically achieving "sealing before treatment" and step-by-step recovery of residual ozone. The annular chamber is equipped with a catalytic decomposition bed or a microporous aerator, which can decompose the recovered ozone into oxygen for recycling or dissolve it into ozone water for atomized treatment. This invention has a compact structure, is easy to operate, achieves zero ozone emissions and resource recycling, and significantly improves treatment safety and applicability.

Description

Technical Field

[0001] This invention patent relates to the field of skin disease treatment technology, specifically to a portable ozone therapy device for skin diseases and a closed-loop control method for the gas path. Background Technology

[0002] Ozone, due to its strong oxidizing properties, possesses excellent bactericidal, anti-inflammatory, and tissue-repair-promoting effects, and has been widely used in the clinical treatment of skin diseases. Compared to traditional hormone-based or antibiotic treatments, ozone therapy has advantages such as no drug resistance, fewer side effects, and reusability, making it particularly suitable for the adjunctive treatment of chronic wounds, infectious skin diseases, and inflammatory skin conditions. Currently, most commonly used ozone therapy devices in clinical practice are similar to the bag-type structure disclosed in patent CN2207840Y. These devices employ a porous ozone tube with an insulating sleeve in conjunction with a flexible bag. After the bag is placed over the affected area, ozone gas is inflated for treatment.

[0003] However, this type of bag-type ozone therapy device has obvious limitations: on the one hand, the shape of the bag needs to be specially designed according to the treatment site. For example, a glove-shaped bag is needed to treat the hand, a sock-shaped bag is needed to treat the foot, and a trouser-shaped or T-shirt-shaped bag is needed to treat the limb. This means that the same device cannot be used for different parts of the body. Patients need to buy multiple bags according to the affected area, which is costly and cumbersome. On the other hand, the bag is sealed to the skin of the affected area by tying the bag opening tightly. The sealing reliability is poor, which can easily lead to ozone leakage. This not only affects the treatment effect but also easily irritates the patient's respiratory tract.

[0004] Research reveals that current designs for ozone-based skin disease treatment devices primarily focus on two directions: first, functional integration and automation, integrating multiple treatment modes (such as ozone gas therapy, ozone water cleaning, fumigation, etc.) into a single device and automating operation through a control system; second, diversifying treatment methods, improving treatment efficacy through different administration methods (such as direct gas contact, ozone water immersion, atomized spraying, etc.). For example, Chinese patent CN203329018U discloses a skin disease-specific ozone therapy device that integrates an ozone generator, ultrasonic atomizer, jet injector, mixer, water pump, and air pump, achieving multiple functions such as cleaning, fumigation, and ozone water therapy, all automated by a CPU module. Another example is Chinese patent CN213642598U, which discloses a device that uses an ozone electrolysis generator to prepare ozone water, which is then atomized by an ultrasonic atomizer before entering a bag. This atomization method enhances the penetrating power of ozone, achieving deeper sterilization and disinfection of the skin.

[0005] However, current technologies do not adequately address the handling of residual ozone after treatment. Existing devices often directly release residual ozone from the treatment chamber and tubing into the atmosphere after treatment, or simply discharge it through a simple exhaust vent, lacking effective recovery and harmless treatment methods. Ozone, as a strong oxidizing gas, has a significant irritant effect on the human respiratory tract, and long-term exposure may cause coughing, chest tightness, and even lung damage. Furthermore, existing devices also have significant shortcomings in clinical applicability, requiring specially designed bags of different shapes for different treatment sites, resulting in high costs and cumbersome operation.

[0006] In view of the current state of the technology, the applicant provides a portable ozone therapy device for skin diseases that is widely applicable, reliably sealed, and has the function of residual ozone recovery. Summary of the Invention

[0007] The purpose of this invention is to provide a portable ozone therapy device for skin diseases and a closed-loop airflow control method. This device achieves dual-mode treatment—limb-penetrating and end-point-closed—allowing a single device to cover different areas such as the arms, legs, hands, and feet, significantly improving clinical applicability. Furthermore, the device, combined with its control method, enables effective recovery and harmless treatment of residual ozone, avoiding the risk of respiratory irritation and environmental pollution from direct emissions.

[0008] The present invention is implemented as follows: a portable ozone therapy device for skin diseases includes a treatment cylinder, with an annular slider at each of the inner ends of the treatment cylinder that can move along the axial direction of the treatment cylinder; an annular airbag is provided on the annular slider; a pressure relief valve is provided on each of the two annular airbags on opposite sides; a sealing mechanism is provided at one end of the inner side of the treatment cylinder, which can seal one end of the treatment cylinder. The treatment cylinder is equipped with an ozone generator and an air supply pump connected by pipes. The outlet of the air supply pump is connected to two annular airbags simultaneously through pipes. The treatment cylinder is also equipped with a suction pump, which is connected to both annular airbags simultaneously through pipes. A three-way valve is located at the junction of the connecting pipes between the two annular airbags and the suction pump. By switching the working state of the three-way valve, two air path connection modes can be achieved: first, both annular airbags are connected to the suction pump simultaneously; second, the treatment chamber formed inside the treatment cylinder is connected to the suction pump. The treatment cylinder is also equipped with an annular chamber, which contains an ozone recovery mechanism. The outlet of the air pump is connected to the ozone recovery mechanism.

[0009] Furthermore, the ozone recovery mechanism is a catalytic decomposition bed, and the outlet of the air pump is connected to the catalytic decomposition bed; an annular oxygen storage chamber is formed between the catalytic decomposition bed and the annular chamber; the inlet of the ozone generator is connected to the oxygen storage chamber; an ozone concentration sensor is installed on the inner wall of the treatment cylinder between two annular air bladders.

[0010] Furthermore, the ozone recovery mechanism is a microporous aerator, and the outlet of the air pump is connected to the microporous aerator; multiple ultrasonic atomizing plates are arranged circumferentially on the side wall between the treatment cylinder and the annular chamber. When liquid is injected into the annular chamber, the ultrasonic atomizing plates can atomize the liquid and enter the treatment cylinder to act on the skin lesion site, thereby realizing ozone atomization therapy.

[0011] Furthermore, the two annular airbags are connected to the air supply pump via two retractable air inlet branches, and the intersection of the two air inlet branches is connected to the air outlet of the air supply pump; the two annular airbags are connected to the suction pump via two retractable air outlet branches, and a three-way valve is located at the intersection of the two air outlet branches. The common end of the three-way valve is connected to the air inlet of the suction pump. When the reversing end of the three-way valve is adjusted and controlled, two air path connection modes can be realized: first, both air outlet branches are connected to the suction pump simultaneously; second, the treatment chamber formed inside the treatment cylinder is connected to the suction pump.

[0012] Furthermore, the sealing mechanism is a sealing cap, which is detachably connected to the treatment cylinder.

[0013] Furthermore, the sealing mechanism is a multi-layered airbag, and each multi-layered airbag is equipped with a pressure relief valve on the inner side facing the treatment cylinder. The multi-layered airbag is annular and fits into the inner ring of the annular airbag to form a multi-layered annular airbag structure. Each annular airbag is equipped with a pressure relief valve on the side facing the inner side of the treatment cylinder. At least two one-way valves with opposite flow directions are provided on the contact surface between two adjacent annular airbags to allow gas to flow unidirectionally between adjacent airbags. When the gas supply pump pressurizes and supplies gas, ozone gas enters and inflates the outer annular airbag in sequence, and then enters the adjacent inner annular airbags step by step through the one-way valve. This causes each layer of annular airbags to inflate and expand from the outside to the inside, gradually shrinking and finally sealing the central hole of the annular airbag, thus achieving the sealing of the end of the treatment cylinder.

[0014] Furthermore, the occlusion mechanism consists of multiple cone-shaped valves, which close in their natural state to seal the end of the treatment cylinder; the annular slider can open the multiple cone-shaped valves when it slides along the axial direction of the treatment cylinder.

[0015] This invention also provides a closed-loop control method for the gas path of a portable ozone therapy device for skin diseases, which is applied in the portable ozone therapy device for skin diseases; the method includes the following steps: S1: During the sealing stage, the controller outputs a control signal to turn on the air supply pump and the ozone generator. The air supply pump pressurizes and delivers the ozone gas generated by the ozone generator to the two annular airbags, causing the annular airbags to gradually expand after being inflated until they are in close contact with the surface of the patient's limb, thereby forming a sealed treatment cavity inside the treatment cylinder. S2: During the treatment phase, the controller controls the operation of the treatment components according to the preset treatment mode and monitors the treatment process in real time. S3: Recovery phase. When the treatment process reaches the preset end condition, the controller outputs a control signal to adjust the working state of the three-way valve and simultaneously turns on the suction pump to extract ozone gas.

[0016] Furthermore, in S2, when the treatment mode is gas treatment mode, the treatment element is an ozone generator, and the ozone concentration sensor monitors the ozone concentration in the treatment chamber in real time. When the monitored ozone concentration reaches the preset treatment threshold, the controller disconnects the power supply to the gas pump and the ozone generator, and starts timing the treatment time. The preset end condition is that the treatment time reaches the preset duration. In S3, the controller adjusts the three-way valve in the following way: the controller first connects the two reversing ends of the three-way valve to the treatment chamber, and at the same time, the controller turns on the suction pump to extract ozone gas from the treatment chamber. When the monitored ozone concentration is close to zero, the controller adjusts the three-way valve again so that the two reversing ends of the three-way valve connect the two annular airbags to the suction pump, and the suction pump then extracts ozone gas from the two annular airbags.

[0017] Furthermore, in S2, when the treatment mode is nebulization therapy mode, the treatment element is an ultrasonic nebulizer. The controller controls the ultrasonic nebulizer to work, atomize the liquid in the annular chamber and send it into the treatment chamber and start timing the nebulization working time; the preset end condition is that the nebulization working time reaches the preset duration; when the pressure value received by the pressure sensor in the annular airbag reaches the preset value, the controller disconnects the power supply to the air pump and the ozone generator. In S3, the controller adjusts the three-way valve in the following way: the controller connects the two reversing ends of the three-way valve to the two annular airbags and the suction pump, and the suction pump then extracts the ozone gas from the two annular airbags.

[0018] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention features an annular chamber fitted onto the outer wall of the treatment cylinder. The outlet of the air pump is connected to an ozone recovery mechanism housed within the annular chamber. By adjusting the operation of the three-way valve, all residual ozone in the treatment chamber and the annular airbag can be pumped to the ozone recovery mechanism for treatment, achieving zero ozone emissions and avoiding direct emissions that could harm human health and the environment. The ozone recovery mechanism can be configured as a catalytic decomposition bed, decomposing the recovered ozone into oxygen and storing it in the annular chamber. The stored oxygen can be recycled by the ozone generator during the next treatment to regenerate ozone, thereby improving ozone production efficiency and achieving resource recycling. The ozone recovery mechanism can also be configured as a microporous aerator to work with the liquid in the annular chamber. Multiple ultrasonic atomizing plates are embedded in the sidewall between the treatment cylinder and the annular chamber. When the annular chamber is filled with liquid, a vacuum pump draws ozone into the chamber, where it is dispersed and dissolved in the water by the microporous aerator to form ozone water. The ozone water is then atomized by the ultrasonic atomizing plates and enters the treatment chamber, achieving ozone liquid atomization therapy on the lesion site. This design allows the same device to perform both ozone gas therapy and ozone liquid atomization therapy, expanding the applicability of the treatment device.

[0019] 2. The outlet of the air supply pump is simultaneously connected to two annular airbags, and a pressure relief valve is installed on the opposite side of the two annular airbags, forming a series air path between the air supply pump, the annular airbags, and the treatment chamber. During the sealing phase, the air supply pump continuously pressurizes, and the annular airbags first inflate to achieve a sealed fixation with the patient's limb; when the air pressure inside the airbag reaches the opening threshold of the pressure relief valve, ozone gas enters the treatment chamber through the pressure relief valve, thereby performing ozone gas therapy. This air path design allows the air supply pump to automatically achieve "sealing first, then treatment" timing control during operation, without the need for additional switching operations.

[0020] 3. The sealing mechanism is configured as a multi-layered airbag, which is then attached to the inner ring surface of the annular airbag to form a multi-layered annular airbag structure. When treating skin diseases of the limbs, a limb-through mode is used, with the air pump continuously pressurizing to inflate the annular airbag and seal the treatment cavity at the lesion site. When treating skin diseases of the extremities, an end-closure mode is used, with the air pump continuously pressurizing to sequentially inflate the multi-layered annular airbags, gradually shrinking and ultimately sealing the central hole of the multi-layered annular airbag structure, thus sealing one end of the treatment cylinder. This allows for convenient sealing of the treatment cavity even when treating skin diseases of the extremities.

[0021] 4. The sealing mechanism is configured with multiple conical valves, one end of which is rotatably connected to the inner wall of the treatment cylinder. In its natural state, the conical valves are closed to each other, sealing the end of the treatment cylinder for the treatment of skin diseases of the extremities. When treatment of skin diseases of the extremities is required, the annular slider is driven to move towards the end of the treatment cylinder. The annular slider pushes the conical valves outward, allowing the end of the treatment cylinder to be open. Then, the annular airbag is inflated to achieve a seal and fixation with the limb, thereby achieving the treatment of the lesions on the limb. This allows for free switching between two treatment modes to meet the treatment needs of skin diseases in different locations. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a portable ozone therapy device for skin diseases provided in Embodiment 1 of the present invention; Figure 2 This is a top view of the three-way valve provided in Embodiment 1 of the present invention; Figure 3 This is a schematic diagram of the control system in a portable ozone therapy device for skin diseases provided in Embodiment 1 of the present invention; Figure 4 This is a schematic diagram of the structure of a portable ozone therapy device for skin diseases provided in Embodiment 2 of the present invention when the sealing mechanism is not installed; Figure 5 This is a schematic diagram of the structure of a portable ozone therapy device for skin diseases provided in Embodiment 2 of the present invention when the sealing mechanism is installed; Figure 6 This is a schematic diagram of the control system in a portable ozone therapy device for skin diseases provided in Embodiment 2 of the present invention; Figure 7 This is a schematic diagram of the structure of a portable ozone therapy device for skin diseases provided in Embodiment 3 of the present invention; Figure 8 yes Figure 7 Cross-sectional view at point AA; Figure 9 yes Figure 7 Enlarged view of point B in the middle; Figure 10 This is a schematic diagram of the use of a portable ozone therapy device for skin diseases in limb penetration mode according to Embodiment 3 of the present invention; Figure 11 This is a schematic diagram of the use of a portable ozone therapy device for skin diseases in the end-closed mode according to Embodiment 3 of the present invention; Figure 12 This is a schematic diagram of the structure of a portable ozone therapy device for skin diseases provided in Embodiment 4 of the present invention when the sealing mechanism is closed; Figure 13This is a schematic diagram of the structure of a portable ozone therapy device for skin diseases provided in Embodiment 4 of the present invention when the sealing mechanism is opened; Figure 14 This is a schematic diagram of the use of a portable ozone therapy device for skin diseases in limb penetration mode, as provided in Embodiment 4 of the present invention.

[0023] Reference numerals used in the above figures: 1. Treatment cylinder; 2. Annular slider; 3. Sealing cap; 4. Three-way valve; 5. Air pump; 6. Air outlet branch pipe; 7. Catalytic decomposition bed; 8. Annular airbag; 9. Annular chamber; 10. Conical valve; 11. Ozone generator; 12. Air inlet branch pipe; 13. Air supply pump; 14. Interface; 15. Valve core; 16. T-shaped channel; 17. Spherical shell; 18. Microporous aerator; 19. Ultrasonic atomizing plate; 20. Valve body; 21. Sealing plate; 22. Spring. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0025] The implementation of the present invention will be described in detail below with reference to specific embodiments.

[0026] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this invention, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this invention. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0027] Referring to the figure, a preferred embodiment of the present invention is provided.

[0028] Reference Figure 1-13 The image shows a preferred embodiment of the present invention.

[0029] Example 1: A portable ozone therapy device for skin diseases, the main structure of which is a treatment cylinder 1. For example... Figure 1As shown, two annular sliders 2 are provided on the inner side of the treatment cylinder 1, which can slide along its axis. Annular airbags 8 are attached to the inner ring sides of each of the two annular sliders 2. When the two annular airbags 8 are inflated and sealed, they together with the inner wall of the treatment cylinder 1 form a sealed treatment cavity. The annular sliders 2 can slide along the axis of the treatment cylinder 1, thereby flexibly adjusting the spatial size of the treatment cavity according to the location and size of the skin lesion. This effectively reduces the amount of ozone gas used while ensuring treatment effectiveness, achieving precise treatment.

[0030] An air supply pump 13 and an ozone generator 11 are installed on the outer wall of the treatment cylinder 1. The ozone generator 11 is a miniature ozone generator, specifically the 3S-TM500 miniature ozone generator 11 manufactured by Beijing Tonglin Technology Co., Ltd. This model uses German corona discharge technology, has an ozone output of 1000mg / h, a rated voltage of 12V, a power of 12W, and an external dimension of only 175mm×83mm×80mm, making it compact and easy to integrate. The air supply pump 13 is a miniature air pump, specifically the CurieJet® GS8ST miniature piezoelectric pump. This model uses piezoelectric actuation and diaphragm micropump technology, with a flow rate of approximately 100ml / min, and features ultra-small, ultra-thin, ultra-quiet, and low-power consumption characteristics, making it suitable for portable medical devices. The outlet of the ozone generator 11 is connected to the inlet of the air supply pump 13. The outlet of the air supply pump 13 is also connected to two inlet branch pipes 12, which are located inside the treatment cylinder 1. The outlet of the air supply pump 13 is connected to the intersection of the two inlet branch pipes 12. The other end of the two inlet branch pipes 12 is installed in the annular slider 2 and communicates with the annular airbag 8. Since the annular slider 2 can slide along the axial direction of the treatment cylinder 1, in this embodiment, the inlet branch pipes 12 are set as rigid telescopic pipes (such as stainless steel telescopic sleeves or telescopic corrugated pipes) so that when the annular slider 2 is adjusted, the annular airbag 8 always remains in communication with the air supply pump 13.

[0031] To achieve sequential control of the air supply pump 13's process of first sealing the annular airbag 8 before injecting ozone into the treatment chamber for skin disease treatment, this embodiment installs pressure relief valves on opposite sides of both annular airbags 8. The air supply pump 13, annular airbags 8, and treatment chamber are connected in series via these pressure relief valves. When the internal air pressure of the annular airbag 8 reaches the preset opening pressure threshold of the pressure relief valve, the air supply pump 13 only needs to continuously pressurize, and the high-pressure ozone gas will open the pressure relief valve, allowing the ozone gas to evenly disperse in the sealed treatment chamber. This air path design eliminates the need for complex control logic adjustments; the "seal first, treat later" effect is automatically achieved simply by the air supply pump 13 continuously pressurizing.

[0032] This embodiment uses ozone gas to directly treat skin lesions, and is mainly applicable to infectious skin diseases (such as viral warts, herpes zoster, fungal infections), chronic ulcers or wounds (such as diabetic foot, pressure sores, infected wounds), and bullous skin diseases (such as pemphigus).

[0033] To ensure effective ozone removal after treatment, this embodiment also includes two outlet pipes 6 inside the treatment cylinder 1. One end of each outlet pipe 6 is installed in one of the two annular sliders 2 and connected to the corresponding annular airbags 8; the other end of each outlet pipe 6 is connected to the side wall of the three-way valve 4. To allow the annular sliders 2 to slide normally, the outlet pipes 6, like the inlet pipes 12, are rigid telescopic pipes.

[0034] like Figure 2 As shown, the three-way valve 4 mainly consists of a spherical housing 17, a valve core 15, and a stepper motor (not labeled in the figure). The valve core 15 has a T-shaped channel 16, with its horizontal ends serving as reversing ends and its vertical end as a common end. The top of the valve core 15 is connected to the output end of the stepper motor, and the stepper motor drives the valve core 15 to rotate, thus achieving reversal. Four ports 14 are provided on the side wall of the spherical housing 17. Two opposite ports 14 are connected to two air outlet branches 6, and the other two opposite ports 14 are connected to the treatment chamber. The air inlet of the suction pump 5 is connected to the common end of the valve core 15.

[0035] When the stepper motor drives the valve core 15 to rotate to the first working position, the two reversing ends of the T-shaped channel 16 are respectively connected to the interfaces 14 connecting the two air outlet branches 6, so that the suction pump 5 and the two annular air bags 8 form an air passage connection, which can extract ozone gas from the annular air bags 8. When the valve core 15 rotates to the second working position, the two reversing ends of the T-shaped channel 16 are respectively connected to the two interfaces 14 connecting the treatment chamber, so that the suction pump 5 and the treatment chamber form an air passage connection, which can extract ozone gas from the treatment chamber. By driving the valve core 15 to reverse the direction of the stepper motor, the suction pump 5 can selectively connect to the annular air bags 8 and the treatment chamber respectively, thus completing the stepwise recovery of ozone gas inside the entire treatment device.

[0036] To avoid pollution and resource waste caused by the direct release of ozone gas into the environment, this embodiment provides an annular chamber 9 on the outer wall of the treatment cylinder 1. A catalytic decomposition bed 7 is located in the annular chamber 9 near the outlet of the suction pump 5. This catalytic decomposition bed 7 uses a supported metal oxide catalyst, specifically manganese dioxide (MnO2) as the main catalyst and copper oxide (CuO) or nickel oxide (NiO) as a co-catalyst, supported on activated carbon or a porous γ-alumina carrier. This catalytic decomposition bed 7 can efficiently catalytically decompose the ozone recovered by the suction pump 5 into oxygen at room temperature and pressure, with a catalytic efficiency exceeding 90%. The outlet of the suction pump 5 is connected to the inlet of the catalytic decomposition bed 7 in the annular chamber 9, allowing the recovered ozone to enter the catalytic decomposition bed 7 for decomposition. The resulting oxygen is stored in the annular chamber 9. To achieve oxygen recycling, this embodiment connects the air inlet of the ozone generator 11 to the oxygen storage chamber of the annular chamber 9, so that the ozone generator 11 can directly use the oxygen stored in the annular chamber 9 as a gas source to generate ozone, thereby realizing the recycling of ozone, effectively reducing oxygen consumption and improving resource utilization efficiency.

[0037] To enable the treatment device to flexibly switch operating modes according to different treatment sites, this embodiment has a sealing mechanism at one end of the treatment cylinder 1. This sealing mechanism uses a sealing cap 3, which is detachably connected to the end of the treatment cylinder 1 via a threaded connection. When the sealing cap 3 is tightened, it forms a reliable seal at the end of the treatment cylinder 1, achieving end closure. When treating skin lesions on the patient's palms, soles, or other extremities, simply tighten the sealing cap 3 onto the end of the treatment cylinder 1, then insert the patient's palm or sole from the other end of the treatment cylinder 1. Start the air pump 13 to continuously pressurize, inflating the annular airbag 8 to achieve a sealed fixation with the patient's wrist or ankle. Simultaneously, the sealing cap 3 seals the other end of the treatment cylinder 1, forming a closed treatment cavity within the treatment cylinder 1, thereby achieving ozone therapy for skin lesions on the extremities. When treating the patient's arms, legs, or other limbs, simply remove the sealing cap 3, leaving the treatment cylinder 1 open at both ends, and switch to the limb penetration mode.

[0038] To achieve precise control of ozone gas within the treatment chamber and the annular airbag 8, this embodiment includes a pressure sensor inside the annular airbag 8 for real-time monitoring of the airbag pressure; and an ozone concentration sensor inside the treatment cylinder 1 for real-time monitoring of the ozone concentration within the treatment chamber. The ozone concentration sensor can be an OX-B431 electrochemical ozone sensor manufactured by Alphasense Ltd. (UK), with a measurement range of 0-200 ppm.

[0039] The control system in this embodiment is as follows: Figure 3As shown, in order to avoid ozone leakage when injecting and expelling ozone gas during skin disease treatment using this device, this embodiment also provides a closed-loop gas path control method, which mainly includes a sealing stage, a treatment stage, and a recovery stage.

[0040] Sealing Phase: The controller is activated, outputting a control signal to turn on the air supply pump 13 and the ozone generating unit. The air supply pump 13 pressurizes the ozone gas generated by the ozone generating unit and delivers it to the two annular airbags 8 through two air inlet branches 12. The two annular airbags 8 gradually expand after inflation until they fit tightly against the surface of the patient's limb, thus forming a sealed treatment cavity within the treatment cylinder 1.

[0041] When the air pressure reaches the pressure relief valve's threshold, the pressure relief valve opens, and the air supply pump 13 continues to work, allowing ozone gas to enter the treatment chamber through the pressure relief valve.

[0042] Treatment phase: The ozone concentration sensor monitors the ozone concentration in the treatment chamber in real time. When the monitored ozone concentration reaches the preset treatment threshold, the controller outputs a control signal to disconnect the power supply to the air supply pump 13 and the ozone generating unit, stops the inflation, and starts timing the treatment time.

[0043] The treatment cavity maintains a preset concentration of ozone gas to treat the lesions on the surface of the patient's limbs.

[0044] Recovery Phase: When the treatment time reaches the preset duration, the controller outputs a control signal to adjust the working state of the three-way valve 4, connecting the two reversing ends of the three-way valve 4 to the treatment chamber. Simultaneously, the controller activates the suction pump 5 to extract the residual ozone gas from the treatment chamber and deliver it to the catalytic decomposition unit within the annular chamber 9. The catalytic decomposition unit decomposes the ozone into oxygen, which is then stored in the annular chamber 9.

[0045] An ozone concentration sensor continuously monitors the ozone concentration within the treatment chamber. When the detected ozone concentration drops to zero, the controller readjusts the operation of the three-way valve 4, connecting its two reversing ends to the two outlet branches 6 respectively. The suction pump 5 continues to operate, extracting the residual ozone gas from the two annular airbags 8 and delivering it to the catalytic decomposition unit within the annular chamber 9 for decomposition and storage.

[0046] Example 2: A portable ozone therapy device for skin diseases, such as Figures 4-6As shown, this embodiment provides a new ozone recovery mechanism compared to Embodiment 1. This ozone recovery mechanism uses a microporous aerator 18, which is installed on the side wall of the annular chamber 9. The outlet of the suction pump 5 is connected to the inlet of the microporous aerator 18. In this embodiment, the annular chamber 9 can be pre-filled with a certain amount of liquid (such as water or medicinal solution). After the suction pump 5 extracts the residual ozone from the treatment chamber and the annular airbag 8, it is transported to the microporous aerator 18. The ozone is dispersed by the microporous aerator 18 to form micron-sized fine bubbles, allowing the ozone gas to fully contact and dissolve in the liquid in the annular chamber 9, generating ozone liquid, thereby achieving efficient recovery and utilization of ozone.

[0047] To achieve the ozone liquid atomization therapy function, this embodiment has multiple ultrasonic atomizing plates 19 uniformly embedded in the circumferential direction on the side wall between the annular chamber 9 and the treatment cylinder 1. The atomizing surface of the ultrasonic atomizing plate 19 faces the inside of the treatment cylinder 1, and its electrical terminal is connected to the controller. When the annular chamber 9 contains ozone liquid, the controller activates the ultrasonic atomizing plate 19. The ultrasonic atomizing plate 19 atomizes the ozone liquid into fine droplets through high-frequency vibration. The droplets enter the treatment cavity through the through holes on the side wall of the treatment cylinder 1, acting evenly on the skin lesion site to achieve ozone liquid atomization therapy.

[0048] Through the above structural design, the ozone therapy device for skin diseases in this embodiment can simultaneously achieve two treatment modes: one is the direct ozone gas treatment mode (same as in Embodiment 1), and the other is the ozone liquid atomization treatment mode, which is suitable for dermatitis and eczema-like skin diseases (such as atopic dermatitis and hand eczema), pruritic skin diseases, and inflammatory skin diseases (such as seborrheic dermatitis). The integration of the two treatment modes significantly expands the treatment applicability of the device and meets the clinical needs of patients with different skin diseases.

[0049] In this embodiment, since the annular chamber 9 is used to store liquid, the air inlet of the ozone generator 11 needs to be connected to an external gas source, specifically, to the outside atmosphere or to an external oxygen source, in order to meet the gas supply required for ozone preparation.

[0050] It should be noted that regardless of the specific structure of the ozone recovery mechanism, as long as it can introduce ozone gas into the annular chamber 9 for decomposition or absorption, it should be considered to fall within the scope of protection of this application.

[0051] The control system in this embodiment is as follows: Figure 6 As shown, an ultrasonic atomizing plate 19 is added, and the pressure sensor also has a special function. The control system in this embodiment has two main modes: ozone gas therapy mode and ozone liquid atomization mode. In ozone gas therapy mode, the closed-loop control logic is the same as in Embodiment 1. When switching to ozone liquid atomization mode, the specific closed-loop control method is as follows: Sealing Phase: The controller is activated, outputting a control signal to turn on the air supply pump 13 and the ozone generating unit. The air supply pump 13 pressurizes the ozone gas generated by the ozone generating unit and delivers it to the two annular airbags 8 through two air inlet branches 12. The two annular airbags 8 gradually expand after inflation, causing them to fit tightly against the skin surface, thus sealing the treatment cavity.

[0052] Treatment phase: The pressure sensor inside the annular airbag 8 monitors the airbag pressure value in real time. When the monitored pressure reaches the set threshold (this threshold is less than the opening pressure value of the pressure relief valve to ensure that ozone gas does not enter the treatment chamber), the controller outputs a control signal to disconnect the power supply to the air supply pump 13 and the ozone generator 11 and stop inflation; at the same time, the ultrasonic nebulizer 19 is activated to atomize the ozone liquid in the annular chamber 9 and deliver it to the treatment chamber to perform ozone liquid atomization treatment on the lesion site.

[0053] Recovery phase: When the nebulization time of the ultrasonic nebulizer 19 reaches the preset treatment time, the controller disconnects the power supply of the ultrasonic nebulizer 19 and stops nebulization; at the same time, the three-way valve 4 is adjusted to connect with the two air outlet branches 6, and the air pump 5 is turned on to draw the residual ozone gas in the two annular airbags 8 into the annular chamber 9, where it is absorbed or decomposed by the ozone recovery mechanism in the annular chamber 9.

[0054] Example 3: A portable ozone therapy device for skin diseases, such as Figures 7-11 As shown, compared to Embodiments 1 and 2, this embodiment provides a new sealing mechanism, which adopts a double-layer annular airbag 8 structure, specifically a triple-layer annular airbag 8. Figure 7 and Figure 8 As shown, the three-layered annular airbags 8 are all annular, consisting of a first-layer annular airbag 8, a second-layer annular airbag 8, and a third-layer annular airbag 8 from the outside in. Each annular airbag 8 is concentrically fitted within the inner ring of the first annular airbag 8, forming a three-layered annular airbag structure. Each annular airbag 8 has a pressure relief valve on the side facing inwards from the treatment cylinder 1. Figure 9 As shown, two one-way valves with opposite flow directions are installed on the contact surface between two adjacent annular airbags 8. One one-way valve allows gas to flow unidirectionally from the outer layer to the inner layer, and the other one-way valve allows gas to flow unidirectionally from the inner layer to the outer layer, thereby realizing bidirectional controllable flow of gas between adjacent airbags.

[0055] In this embodiment, the check valve and the pressure relief valve adopt the same valve body 20 structure, both consisting of a valve body 20, a spring 22, and a sealing plate 21. An airflow channel is provided inside the valve body 20. One end of the spring 22 is fixedly installed on the inner wall of the airflow channel, and the other end of the spring 22 is connected to the sealing plate 21. In its natural state, the sealing plate 21 blocks the airflow channel under the elastic force of the spring 22, keeping the valve in a normally closed state.

[0056] To achieve the "sealing first, treatment later" timing control, this embodiment features a differentiated design for the spring coefficients 22 of the check valve and the pressure relief valve: the spring coefficient of the check valve is smaller than that of the pressure relief valve, allowing the check valve to open at lower pressures, while the pressure relief valve requires higher pressures to open. Simultaneously, the check valve, which allows gas to flow from the outer layer to the inner layer, works in conjunction with the air supply pump 13 to achieve staged inflation; the check valve, which allows gas to flow from the inner layer to the outer layer, works in conjunction with the suction pump 5 to achieve staged exhaust.

[0057] In the limb penetration mode, such as Figure 10 As shown, the three-layer annular airbag 8 structure is inflated and expanded under the pressure of the air supply pump 13. Each layer of airbag is in close contact with the surface of the patient's limb and together with the first annular airbag 8, forms a sealed treatment cavity. Its working principle is the same as that of the annular airbag 8 in Embodiments 1 and 2.

[0058] In the terminal closed mode, such as Figure 11 As shown, the air supply pump 13 continuously pressurizes and supplies ozone gas. Ozone gas first enters the first annular airbag 8, inflating it. When the air pressure inside the first airbag reaches the opening pressure of the one-way valve, the one-way valve, which allows gas to flow from the outer layer to the inner layer, opens, allowing ozone gas to enter the second annular airbag 8 and inflate it. This process continues, with the third annular airbag 8 inflating sequentially. As each airbag inflates, the three-layer annular airbag structure gradually contracts towards the center, ultimately completely sealing the central hole with the third annular airbag 8, achieving reliable sealing of the end of the treatment cylinder 1. This structural design allows the same airbag system to automatically switch between two working modes without manual operation, simplifying the operation process and ensuring reliable sealing.

[0059] Example 4: A portable ozone therapy device for skin diseases, such as Figures 12-14 As shown, this embodiment provides a new blocking mechanism compared to embodiments 1-3, such as... Figure 12 As shown, the occlusion mechanism of this embodiment is mainly composed of multiple cone-shaped valves 10. One end of each cone-shaped valve 10 is rotatably connected to the inner wall of the treatment cylinder 1. In the natural state, each cone-shaped valve 10 closes to each other, realizing reliable occlusion of the end of the treatment cylinder 1. At this time, the device is in the end-closure mode, which is suitable for the treatment of skin diseases of the extremities such as the palms and soles.

[0060] like Figure 13As shown, the annular slider 2 can slide along the axial direction of the treatment cylinder 1. When the annular slider 2 moves towards the end of the treatment cylinder 1, the front end of the annular slider 2 contacts each cone valve 10 and gradually expands them outward, causing the multiple cone valves 10 to change from a closed state to an open state, thus completing the connection at the end of the treatment cylinder 1. At this time, the annular airbag 8 is inflated by the air supply pump 13. After the annular airbag 8 expands, it fits tightly against the surface of the patient's limb to achieve a seal and fixation. The device switches to the limb penetration mode, which is suitable for the treatment of skin diseases of the arms, legs, and other limbs. Figure 14 The diagram shows the state of the cone valve 10 after it is fully open.

[0061] With the above structural design, the device can be easily switched between the end-closure mode and the limb penetration mode simply by driving the annular slider 2 to move axially. The operation is simple and the switching is rapid, which further improves the clinical applicability of the device.

[0062] It should be noted that, regardless of the specific structural form of the sealing mechanism, as long as it can open and close the end of the treatment cylinder 1 through mechanical, pneumatic or electric drive, thereby switching between the end-closure mode and the limb penetration mode, it should be considered to fall within the protection scope of this application.

[0063] It should be noted that the ozone recovery mechanism (including the catalytic decomposition bed 7 and the microporous aerator 18) described in Examples 1 and 2 can be applied to the schemes described in Examples 3 or 4, respectively. That is, the blocking mechanism and the ozone recovery mechanism in each example can be arbitrarily combined. Such cross-combination application of technical features between different examples should be considered as falling within the protection scope of this application.

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A portable dermatological ozone treatment device, characterized in that, The treatment cylinder (1) includes a treatment cylinder (1), and each of the inner ends of the treatment cylinder (1) is provided with an annular slider (2) that can move along the axial direction of the treatment cylinder (1); the annular slider (2) is provided with an annular airbag (8); the two annular airbags (8) are provided with pressure relief valves on opposite sides; a sealing mechanism is provided at one end of the inner side of the treatment cylinder (1), which can seal one end of the treatment cylinder (1); The treatment cylinder (1) is equipped with an ozone generator (11) and an air supply pump (13) connected by pipes. The outlet of the air supply pump (13) is connected to two annular airbags (8) through pipes. The treatment cylinder (1) is equipped with an air extraction pump (5), which is connected to two annular airbags (8) through pipes. A three-way valve (4) is provided at the junction of the connecting pipes of the two annular airbags (8) and the air extraction pump (5). By switching the working state of the three-way valve (4), two air path connection modes can be realized: first, the two annular airbags (8) are connected to the air extraction pump (5) at the same time; second, the treatment cavity formed inside the treatment cylinder (1) is connected to the air extraction pump (5). The treatment cylinder (1) is also provided with an annular chamber (9), and an ozone recovery mechanism is provided in the annular chamber (9). The outlet of the air pump (5) is connected to the ozone recovery mechanism.

2. The portable dermatological ozone treatment device according to claim 1, characterized in that The ozone recovery mechanism is a catalytic decomposition bed (7), and the outlet of the air pump (5) is connected to the catalytic decomposition bed (7); an annular oxygen storage chamber is formed between the catalytic decomposition bed (7) and the annular chamber (9); the inlet of the ozone generator (11) is connected to the oxygen storage chamber; an ozone concentration sensor is provided on the inner wall of the treatment cylinder (1) between two annular air bags (8).

3. The portable dermatological ozone treatment device according to claim 1, characterized in that The ozone recovery mechanism is a microporous aerator (18), and the outlet of the air pump (5) is connected to the microporous aerator (18). Multiple ultrasonic atomizing plates (19) are provided circumferentially on the side wall between the treatment cylinder (1) and the annular chamber (9). When liquid is injected into the annular chamber (9), the ultrasonic atomizing plates can atomize the liquid and enter the treatment cylinder (1) to act on the skin lesion site to achieve ozone atomization therapy.

4. The portable dermatological ozone treatment device according to claim 1, characterized in that Two annular airbags (8) are connected to the air supply pump (13) via two retractable air inlet branches (12), and the intersection of the two air inlet branches (12) is connected to the air outlet of the air supply pump (13); two annular airbags (8) are connected to the suction pump (5) via two retractable air outlet branches (6), and a three-way valve (4) is set at the intersection of the two air outlet branches (6), and the common end of the three-way valve (4) is connected to the air inlet of the suction pump (5). When the reversing end of the three-way valve (4) is in reversing adjustment control, two air path connection modes can be realized: first, the two air outlet branches (6) are connected to the suction pump (5) at the same time; second, the treatment cavity formed inside the treatment cylinder (1) is connected to the suction pump (5).

5. The portable dermatological ozone treatment device according to any one of claims 1 to 4, characterized in that The sealing mechanism is a sealing cap (3), which is detachably connected to the treatment cylinder (1).

6. The portable dermatological ozone treatment device according to any one of claims 1 to 4, characterized in that The sealing mechanism is a multi-layer airbag. Each multi-layer airbag is equipped with a pressure relief valve on the inner side facing the treatment cylinder (1). The multi-layer airbag is annular and fits into the inner ring of the annular airbag (8) to form a multi-layer annular airbag (8) structure. Each annular airbag (8) is equipped with a pressure relief valve on the side facing the inner side of the treatment cylinder (1). At least two one-way valves with opposite flow directions are provided on the mating surface between two adjacent annular airbags (8) so that the gas can flow unidirectionally between adjacent airbags. When the gas supply pump (13) pressurizes and supplies gas, ozone gas enters and inflates the outer annular airbag (8) in sequence, and then enters the adjacent inner annular airbag (8) through the one-way valve step by step, so that each layer of annular airbag (8) is inflated from the outside to the inside, gradually shrinks and finally seals the central hole of the annular airbag (8), thereby sealing the end of the treatment cylinder (1).

7. The portable dermatological ozone treatment device according to any one of claims 1 to 4, characterized in that The occlusion mechanism consists of multiple cone valves (10), which close in their natural state to seal the end of the treatment cylinder (1); the annular slider (2) can open the multiple cone valves (10) when sliding along the axial direction of the treatment cylinder (1).

8. A gas path closed loop control method of a portable dermatological ozone treatment device, characterized by, This method is applied to any one of the portable ozone therapy devices for skin diseases according to claims 1-8; and includes the following steps: S1: During the sealing stage, the controller outputs a control signal to turn on the air supply pump and the ozone generator. The air supply pump pressurizes and delivers the ozone gas generated by the ozone generator to the two annular airbags, causing the annular airbags to gradually expand after being inflated until they are in close contact with the surface of the patient's limb, thereby forming a sealed treatment cavity inside the treatment cylinder. S2: During the treatment phase, the controller controls the operation of the treatment components according to the preset treatment mode and monitors the treatment process in real time. S3: Recovery phase. When the treatment process reaches the preset end condition, the controller outputs a control signal to adjust the working state of the three-way valve and simultaneously turns on the suction pump to extract ozone gas.

9. The closed-loop control method for the gas path of a portable ozone therapy device for skin diseases according to claim 8, characterized in that, In S2, when the treatment mode is gas treatment mode, the treatment element is an ozone generator. The ozone concentration sensor monitors the ozone concentration in the treatment chamber in real time. When the monitored ozone concentration reaches the preset treatment threshold, the controller disconnects the power supply to the gas pump and the ozone generator, and starts timing the treatment time. The preset end condition is that the treatment time reaches the preset duration. In S3, the controller adjusts the three-way valve in the following way: the controller first connects the two reversing ends of the three-way valve to the treatment chamber, and at the same time, the controller turns on the suction pump to extract ozone gas from the treatment chamber. When the monitored ozone concentration is close to zero, the controller adjusts the three-way valve again so that the two reversing ends of the three-way valve connect the two annular airbags to the suction pump, and the suction pump then extracts ozone gas from the two annular airbags.

10. The closed-loop control method for the gas path of a portable ozone therapy device for skin diseases according to claim 8, characterized in that, In S2, when the treatment mode is nebulization therapy mode, the treatment element is an ultrasonic nebulizer. The controller controls the ultrasonic nebulizer to work, atomizes the liquid in the annular chamber and sends it into the treatment chamber and starts timing the nebulization working time. The preset end condition is that the nebulization working time reaches the preset duration. When the pressure value received by the pressure sensor in the annular airbag reaches the preset value, the controller disconnects the power supply to the air pump and the ozone generator. In S3, the controller adjusts the three-way valve in the following way: the controller connects the two reversing ends of the three-way valve to the two annular airbags and the suction pump, and the suction pump then extracts the ozone gas from the two annular airbags.

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