Device and method for preparing mouth wash for clinical operation

Abstract

According to the preparation device of the mouthwash for the clinical operation, the head end of an air pipe in a plasma generator is connected with an air source, and the tail end of the air pipe is inserted into a to-be-activated water container; to-be-activated water is placed in the to-be-activated water container; a sealing plug is arranged at the tail end of the air pipe and is provided with an inner electrode; the outer end of the inner electrode is connected with a direct-current high-voltage power supply; air holes are uniformly distributed in the bottom of a horizontal pipe part of the air pipe; the outer electrode is arranged at the bottom of the to-be-activated water container; the inner electrode is horizontally suspended on the central axis of the air pipe, and one end of the inner electrode is inserted into the plug body; two ends of the to-be-activated water container are respectively provided with a water inlet and a water outlet, and a to-be-treated water source is connected with the water inlet through a pipeline. According to the invention, the efficiency of diffusing a gas-phase substance into liquid is increased, and an efficient activation effect is finally achieved; the device is small in size, low in cost, convenient to carry and transfer and more suitable for dental clinics; the required energy is lower, the caused energy consumption is lower, and the cost is further reduced.

Description

Technical Field

[0001] The invention relates to a mouthwash for sterilization and anti-inflammation in clinical surgery, in particular to a device and method for preparing the mouthwash for clinical surgery which uses gas-liquid discharge to generate plasma to realize water activation. Background Art

[0002] Mouthwash is needed during dental surgery to clean the oral cavity and wounds to achieve the purpose of sterilization and bacteriostasis and prevent wound infection. Since plasma-activated water is not very irritating and has a good bactericidal effect, and the active ingredients in plasma-activated water that have a sterilizing effect cannot be retained for a long time, it has a good effect as a mouthwash used clinically in dental surgery.

[0003] Plasma activated water is a general term for drinking water that has been treated with plasma and meets national standards. Plasma activated water can be used to promote seed germination, plant growth, and fruit preservation, and it is also a promising disinfection and antibacterial method. In terms of disinfection and sterilization, plasma activated water can be used to disinfect certain medical devices and sterilize food and fruits and vegetables before storage, and has good sterilization and antibacterial effects.

[0004] Plasma activated water has a good broad-spectrum bactericidal effect. In the process of preparing activated water, plasma will produce ultraviolet rays, charged particles, atoms in an excited state, and oxides and nitrides with activated properties and other bactericidal components. Studies have shown that plasma activated water has a good killing effect on Staphylococcus aureus, Salmonella, Escherichia coli and Listeria, and the toxicity of plasma activated water is extremely low. While killing bacteria, it will not cause damage to the human oral cavity or surgical wounds. Therefore, the safety of plasma activated water as a mouthwash for clinical use meets the requirements.

[0005] Traditional plasma activated water preparation devices mostly use gas phase to generate plasma to act on the water to be activated. The activated water prepared in this way contains fewer components that can play a sterilizing role, such as active oxides and active nitrides, which makes the sterilization effect of the prepared activated water poor; and the plasma generated by gas phase discharge is mostly generated on the water surface, so that the plasma can only act on the water surface, and the contact area between the plasma and the liquid is small, which makes the efficiency of preparing activated water low. The specific problems that need to be solved are as follows: 1. The bactericidal components in plasma-activated water only exist for a short time and will soon transform into other components that have no bactericidal effect, which results in the bactericidal effect of plasma-activated water not being able to exist for a long time; 2. The activated water prepared by the conventional plasma activated water preparation device contains fewer components that have bactericidal and antibacterial effects, such as active oxides and active nitrides, which results in poor bactericidal effect of plasma activated water; 3. The traditional gas phase discharge plasma activated water preparation device has a small contact area between plasma and liquid, and the efficiency of utilizing plasma energy is low, resulting in low efficiency in preparing activated water; 4. The power circuit structure used in the traditional plasma activated water preparation device is complex, the number of electrical components used is large, and the cost is high. Summary of the invention

[0006] The present invention aims at the technical defects mentioned in the background technology. Firstly, it provides a device for preparing mouthwash for clinical surgery, and secondly, it provides a scheme for preparing mouthwash for surgery using the above device. The device uses gas-liquid discharge to generate plasma to activate water quality, and is mainly suitable for mouthwash prepared and used in clinical practice.

[0007] To achieve the above technical effects, the technical solution adopted by the present invention is: a preparation device for mouthwash for clinical surgery, comprising a plasma generator, a water source and an air source; the plasma generator comprises a DC high-voltage power supply, a wire, an air gap, a container for water to be activated, an inner electrode, an air pipe, an air hole, an outer electrode, a ground terminal, a water inlet and a water outlet; the DC high-voltage power supply, the air gap, the inner electrode, the outer electrode and the ground terminal are sequentially connected through the wire; the head end of the air pipe is connected to the air source, and the end of the air pipe is inserted into the container for water to be activated; the container for water to be activated contains water to be activated; a sealing plug is installed at the end of the air pipe, and an inner electrode is installed on the sealing plug; the outer end of the inner electrode is connected to the DC high-voltage power supply through the wire; The air pipe is inserted into the container for holding water to be activated, and the air pipe is placed in the bottom of the horizontal pipe part of the container for holding water to be activated, and air holes are evenly distributed; The outer electrode is placed at the bottom of the container for the water to be activated; The inner electrode is horizontally suspended on the central axis of the horizontal tube portion of the air pipe, and one end of the inner electrode is inserted into a plug body disposed at the outlet end of the air pipe; A water inlet and a water outlet are respectively arranged at two ends of the container for holding the water to be activated, and the water source to be treated is connected to the water inlet through a pipeline.

[0008] As a preferred technical solution: the horizontal tube portion of the trachea is a straight tube, and the air holes are evenly arranged along the lower half of the tube wall.

[0009] As a preferred technical solution: the horizontal tube part of the trachea is a coil, and the air holes are evenly arranged along the lower half of the tube wall. A plurality of support frames are arranged in the trachea along its axial direction, and the inner electrode is mounted in the trachea through the support frames. The support frame includes a central sleeve and a support rod on the outer circumference, and the tail end of the support rod is fixedly connected to the inner wall of the trachea.

[0010] As a preferred technical solution: the setting length of the air hole corresponds to the length of the inner electrode.

[0011] As a preferred technical solution: the liquid level of the water to be activated in the container for containing the water to be activated is above the pores and the inner electrode.

[0012] As a preferred technical solution: the DC high voltage power supply includes a rectifier circuit, a filter circuit, an inverter circuit and a voltage doubling rectifier circuit which are integrated and connected together in sequence.

[0013] A method for preparing a mouthwash for clinical surgery is prepared using the above device, and the specific steps are as follows: S1, turn on the power supply, the DC high voltage power supply inputs 220V, 50Hz AC power; S2, opening the valve at the water inlet of the container for holding water to be activated, and the water to be treated enters the container for holding water to be activated; S3, turn on the gas source, and the air flows into the trachea; S4, the alternating current in step S1 is converted into a direct high voltage current after passing through a direct high voltage power supply, and then into a high voltage pulse current after passing through an air gap, and then reaches the inner electrode through a wire, and breaks through the air between the inner electrode and the outer electrode, and an arc is formed at the inner electrode and the pore; the airflow blows the arc downward at the pore position, and forms a plasma to act on the water to be activated outside the air pipe; S5. Open the water outlet at the other end of the container for holding the water to be activated, and the processed mouthwash is delivered to the container for use through a pipeline, completing an activation cycle.

[0014] The treatment time of the water to be activated in step S4 is 1-3 seconds, during which the preparation rate of the water to be activated is 10-16 L / min.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. Since plasma activated water cannot maintain its activated properties for a long time, the mouthwash prepared by the present invention is for clinical use and is ready for immediate use; 2. The present invention uses gas-liquid discharge to generate plasma to prepare activated water. The discharge in the bubbles has a large gas-liquid contact area, which increases the efficiency of gas phase substances diffusing into the liquid. In addition, the presence of a large number of tiny bubbles stirs the water to be activated, ultimately achieving an efficient activation effect. 3. The DC high-voltage power supply used in the present invention integrates a rectifier circuit, a filter circuit, an inverter circuit, and a voltage-doubling rectifier circuit. It has a simple circuit structure, uses fewer electrical components, is small in size, and has a low cost. It is easy to carry and transfer, and is more suitable for scenes such as dental clinics. 4. The DC high-voltage power supply used in the present invention adopts 220V, 50Hz AC input, and because the energy required to generate plasma by gas-liquid discharge is lower than that required to generate plasma directly in liquid, the energy consumption is lower, further reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention (the water source is not shown).

[0017] Figure 2 for Figure 1 A partial enlarged view of .

[0018] Figure 3 This is the schematic diagram of the DC high voltage power supply circuit.

[0019] Figure 4 It is a flow chart of the present invention.

[0020] Figure 5 This is a partial structural diagram of the trachea horizontal pipe in Example 1 of the present invention.

[0021] Figure 6 This is a partial structural diagram of the trachea horizontal pipe in Example 2 of the present invention.

[0022] Figure 7 This is a schematic diagram of the inner electrode and support frame structure in the second embodiment of the present invention.

[0023] In the figure: 1 DC high voltage power supply, 2 conductor, 3 air gap, 4 container for water to be activated, 5 sealing ring, 6 air pipe, 7 air source, 8 water outlet, 9 inner electrode, 10 air hole, 11 outer electrode, 12 water inlet, 13 ground terminal, 14 support frame. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0025] The present invention aims to solve the problems existing in the conventional plasma activated water preparation device and provide a method and device for preparing plasma activated mouthwash with low cost, high efficiency and ready-to-use clinical application, which is mainly used in oral surgery. Figure 1-5 The preparation device disclosed in the present invention is an innovative improvement on the existing plasma activated water preparation device. The plasma activated water preparation device comprises a DC high voltage power supply 1, a conductor 2, an air gap 3, a container 4 for holding water to be activated, a sealing ring 5, an air pipe 6, an air source 7, a water outlet 8, an inner electrode 9, an air hole 10, an outer electrode 11, a water inlet 12, and a ground terminal 13.

[0026] The DC high voltage power supply 1 , the air gap 3 , the inner electrode 5 , the outer electrode 9 and the ground terminal 13 are all connected in sequence through the wire 2 .

[0027] The water source can be the self-supplied water source in the operating room. The head end of the trachea 6 is connected to the air source 7, and the air source 7 can be the self-owned air source of the clinic or hospital. The trachea 6 is inserted into the container 4 for holding water to be activated, and the rear section of the trachea 6 is a horizontal tube. The container 4 for holding water to be activated holds the water to be activated, and the liquid level of the water to be activated in the container for holding water to be activated is above the pores and the inner electrode. The inner electrode 9 is horizontally suspended on the central axis of the horizontal tube part of the trachea, and a sealing plug is installed at the end of the trachea 6, and the inner electrode 9 is installed on the sealing plug; the outer end of the inner electrode 9 is connected to the DC high-voltage power supply 1 through a wire 2. The trachea 6 includes an upper vertical tube part 6-1 and a lower horizontal tube part 6-2 placed in the container 4 for holding water to be activated. The bottom of the horizontal tube part 6-2 is evenly distributed with pores 10. The outer electrode 11 is placed at the bottom of the container 4 for holding water to be activated.

[0028] The two ends of the container 4 for holding water to be activated are respectively provided with a water inlet 12 and a water outlet 8, and the water source to be treated is connected to the water inlet 12 through a pipeline. The connection between the wire and the air pipe and the container 4 for holding water to be activated is provided with a sealing ring 5 to ensure air tightness. The water outlet 8 is located at the upper part of the side of the container for holding water to be activated away from the water inlet 12, and the connection joints at the water inlet and the water outlet are provided with throttle valves for controlling the inflow and outflow of water and air. The connection between the water inlet 12 and the water outlet 8 and the container 4 for holding water to be activated is provided with a sealing pad to ensure air tightness. Embodiment 1

[0029] See Figure 5 In this embodiment, the horizontal pipe part 6-2 of the trachea is a straight pipe, and the air holes 10 are evenly arranged along the lower half of the pipe wall of the horizontal pipe part 6-2 of the trachea 6. The multiple air holes 10 are arranged in parallel along the radial direction of the trachea 6, and the adjacent air holes are arranged in a staggered manner. Figure 2 and 5 Among them, the pores are closely and evenly arranged at the bottom of the air pipe in the horizontally arranged section. When the air flow blows through, a large number of tiny bubbles are formed, which increases the contact area between plasma and liquid and improves the preparation efficiency of activated water. Embodiment 2

[0030] See Figure 6-7 In this embodiment, the horizontal pipe part 6-2 of the air pipe 6 is a coil. In order to explain the distribution of the exhaust holes in detail, the inner electrode is not shown in the figure. The air holes 10 are evenly arranged along the lower half of the pipe wall. A plurality of support frames 14 are arranged in the air pipe 6 along its axial direction, and the inner electrode is mounted in the air pipe through the support frames 14. The support frame includes a central sleeve and a support rod on the outer circumference, and the tail end of the support rod is fixedly connected to the inner wall of the air pipe 6.

[0031] The length of the air hole 10 corresponds to the length of the inner electrode 9. The inner electrode is fixed on the inner wall of the sealing plug and placed on the central axis of the air pipe. The inner electrode is made of corrosion-resistant, oxidation-resistant, and electrically and thermally conductive materials.

[0032] See Figure 3 The DC high-voltage power supply includes a rectifier circuit, a filter circuit, an inverter circuit and a voltage-doubling rectifier circuit that are integrated and connected in sequence. The DC high-voltage power supply plays a rectifying role, that is, rectifying 220V, 50Hz AC power into DC high-voltage power. The circuit principle is simple, and the number of electrical components used is small. With simple circuit principles and fewer electrical components, better results can be achieved.

[0033] The specific steps of preparing mouthwash for clinical surgery using the above device are as follows.

[0034] S1. Turn on the power supply, and the DC high voltage power supply inputs 220V, 50Hz AC power.

[0035] S2. Open the valve at the water inlet of the container for holding water to be activated, and the water to be treated enters the container for holding water to be activated.

[0036] S3. Turn on the air source and the air flows into the trachea.

[0037] S4, the alternating current in step S1 is formed into a direct high-voltage current after passing through a direct high-voltage power supply, and a high-voltage pulse current is formed when the direct high-voltage current reaches the air gap through the wire, and the high-voltage pulse current reaches the inner electrode through the wire, and breaks through the air between the inner electrode and the outer electrode, forming an arc at the inner electrode and the pore, and opening the air source, the air source blows out an airflow, and the airflow reaches one end of the air pipe horizontally placed in the container for holding the water to be activated and blows the arc downward, and plasma is formed under the action of the airflow to act on the water to be activated, and the treatment time of the water to be activated is 1-3 seconds, during which the preparation rate of the water to be activated is 10-16L / min.

[0038] S5. Open the water outlet at the other end of the container for holding the water to be activated, and the processed mouthwash is delivered to the container for use through a pipeline, completing an activation cycle.

[0039] In the process of preparing the mouthwash of the present invention, nitrogen, oxygen and a small amount of water vapor in the air are ionized under the action of plasma, and a large amount of active particles such as active oxides and active nitrides are generated. When the mouthwash is actually used in dental surgery, these particles are diffused to the wound and other parts of the oral cavity, such as the surface of the teeth, along with the mouthwash, and can then destroy the biofilm of bacteria on the wound surface and bacteria in other parts of the oral cavity, and inactivate the bacteria. This can not only achieve rapid, flexible and efficient inactivation of bacteria, but also achieve harmless treatment of the wound and other parts of the oral cavity, and is more suitable for clinical use.

[0040] In the process of preparing mouthwash, according to the demand for mouthwash, the efficiency of the generated plasma can be further adjusted by adjusting the voltage amplitude of the DC high-voltage current output by the DC high-voltage power supply and adjusting the airflow blowing speed. Among them, the DC high-voltage current output by the DC high-voltage power supply has a voltage amplitude of up to 12kV. The higher voltage amplitude improves the efficiency of generating active particles such as active oxides and active nitrides, and improves the rate of mouthwash preparation. The processing time of the present invention is 1-3 seconds, and the optimal is 1 second. The preparation rate can reach 16L / min, that is, the preparation of mouthwash can reach up to 16L per minute, which meets the needs of online preparation and can be made as needed.

[0041] As a preferred technical solution: the DC high-voltage power supply plays a rectifying role, that is, rectifying the 220V, 50Hz AC power into DC high-voltage power; the inner electrode is made of corrosion-resistant, oxidation-resistant, and electrically conductive and thermally conductive materials with a diameter of 1mm; the gas generated during the activation process is discharged along the pipeline through the water outlet; the outer diameter of the water outlet and the water inlet is 28mm and the inner diameter is 20mm; the diameter of the pore is 0.5mm; the air gap is 5.1mm; the inner diameter of the air pipe is 10mm and the outer diameter is 12mm; the container for the activated water is 330mm long, 30mm wide, and 30mm high.

Claims

1. A preparation device for mouthwash for clinical surgery, comprising a plasma generator, a water source and an air source; the plasma generator comprises a DC high-voltage power supply, a wire, an air gap, a container for water to be activated, an inner electrode, an air pipe, an air hole, an outer electrode, a ground terminal, a water inlet and a water outlet; The DC high voltage power supply, the air gap, the inner electrode, the outer electrode and the ground terminal are all connected in sequence through the wires; The head end of the air pipe is connected to the air source, and the end of the air pipe is inserted into the container for holding water to be activated; the container for holding water to be activated holds the water to be activated; a sealing plug is installed at the end of the air pipe, and an inner electrode is installed on the sealing plug; the outer end of the inner electrode is connected to a DC high voltage power supply through a wire; Features: The air pipe is inserted into the container for holding the water to be activated, and the air pipe is placed in the bottom of the horizontal pipe part of the container for holding the water to be activated, and the air holes are evenly distributed; The outer electrode is placed at the bottom of the container for the water to be activated; The inner electrode is horizontally suspended on the central axis of the horizontal tube portion of the air pipe, and one end of the inner electrode is inserted into a plug body disposed at the outlet end of the air pipe; A water inlet and a water outlet are respectively arranged at two ends of the container for holding the water to be activated, and the water source to be treated is connected to the water inlet through a pipeline.

2. The device for preparing mouthwash for clinical surgery according to claim 1, characterized in that: The horizontal pipe part of the trachea is a straight pipe, and the air holes are evenly arranged along the lower half of the pipe wall.

3. The device for preparing mouthwash for clinical surgery according to claim 1, characterized in that: The horizontal pipe part of the air pipe is a coil, and the air holes are evenly arranged along the lower half of the pipe wall.

4. The device for preparing mouthwash for clinical surgery according to claim 3, characterized in that: A plurality of support frames are arranged in the air pipe along its axial direction, and the inner electrode is mounted in the air pipe through the support frames.

5. The device for preparing mouthwash for clinical surgery according to claim 4, characterized in that: The support frame comprises a central sleeve and a support rod on the outer circumference, and the tail end of the support rod is fixedly connected to the inner wall of the trachea.

6. The device for preparing mouthwash for clinical surgery according to claim 2 or 3, characterized in that: The setting length of the air hole corresponds to the length of the inner electrode.

7. The device for preparing mouthwash for clinical surgery according to claim 1, characterized in that: The liquid level of the water to be activated in the container for containing the water to be activated is above the air hole and the inner electrode.

8. The device for preparing mouthwash for clinical surgery according to claim 1, characterized in that: The DC high-voltage power supply comprises a rectifier circuit, a filter circuit, an inverter circuit and a voltage-doubling rectifier circuit which are integrated and connected in sequence.

9. A method for preparing a mouthwash for clinical surgery, characterized in that: The preparation is carried out using the device described in any one of claims 1-5 and 7-8, and the specific steps are as follows: S1, turn on the power supply, the DC high voltage power supply inputs 220V, 50Hz AC power; S2, opening the valve at the water inlet of the container for holding water to be activated, and the water to be treated enters the container for holding water to be activated; S3, turn on the gas source, and the air flows into the trachea; S4, the alternating current in step S1 is converted into a direct high voltage current after passing through a direct high voltage power supply, and then into a high voltage pulse current after passing through an air gap, and then reaches the inner electrode through a wire, and breaks through the air between the inner electrode and the outer electrode, and an arc is formed at the inner electrode and the pore; the airflow blows the arc downward at the pore position, and forms a plasma to act on the water to be activated outside the air pipe; S5. Open the water outlet at the other end of the container for holding the water to be activated, and the processed mouthwash is delivered to the container for use through a pipeline, completing an activation cycle.

10. The use of the plasma activated water preparation device according to claim 9, characterized in that: The treatment time of the water to be activated in step S4 is 1-3 seconds, during which the preparation rate of the water to be activated is 10-16 L / min.

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