CN209997031U

CN209997031U - atmospheric pressure low temperature plasma emitter and therapeutic instrument based on same

Info

Publication number: CN209997031U
Application number: CN201920278070.1U
Authority: CN
Inventors: 江彪; 王永刚; 江敏
Original assignee: Shenzhen Zhongke Moldova Technology Co Ltd
Current assignee: Shenzhen Zhongke Moldova Technology Co Ltd
Priority date: 2019-03-05
Filing date: 2019-03-05
Publication date: 2020-01-31
Anticipated expiration: 2029-03-05

Abstract

The utility model discloses an atmosphere low temperature plasma emitter, be equipped with gas passage between dielectric layer and the insulating layer, gas passage link up load device along high-tension electrode's length direction, electrically conductive shell produces plasma as the earth pole with the high-tension electrode effect, gas passage includes passageway, cushion chamber and second passageway, passageway communicates with load device's end and second passageway communicates with load device's another end, the cushion chamber is established between passageway and second passageway, the gaseous throughput capacity of passageway and second passageway is less than the cushion chamber, beneficial effect, the throughput capacity of cushion chamber is less than passageway and second passageway, can make the plasma that high-tension electrode produced in the cushion chamber by the velocity of flow, be favorable to making plasma quilt evenly spout outside the load device.

Description

atmospheric pressure low temperature plasma emitter and therapeutic instrument based on same

Technical Field

The utility model relates to a medical low temperature plasma generating device, in particular to kinds of atmospheric pressure low temperature plasma transmitting devices and a therapeutic apparatus based on the same.

Background

In star kernel, controlled thermonuclear fusion reactor, electron temperature, ion temperature and neutral particle temperature are well and are called complete thermal equilibrium plasma, giant lightning and arc plasma for cutting and welding, charged particles and neutral particles are close to thermal equilibrium and are called local thermodynamic equilibrium plasma, while in aurora and fluorescent lamps, the electron temperature is much higher than the temperature of ions and neutral particles and are called non-thermodynamic equilibrium plasma and are also called low-temperature plasma, the high-energy electrons of low-temperature plasma are enough to excite, dissociate and ionize reactant molecules, while the whole low-temperature plasma reaction system can be kept at normal temperature, low-temperature plasma is used most in industry, and has wide application prospect in the fields of material surface modification, waste gas treatment, flow control and biomedicine.

Atmospheric pressure low temperature plasma has demonstrated its ability to be used in therapy without pain and contact, even when observed in microscopic images, without causing damage to healthy tissue.

Scientists have succeeded in making atmospheric glow discharge experiments as early as the 50's of the 20 th century. However, due to the technical limitation at that time, the adopted exposed copper electrode and tungsten electrode block cannot be well insulated and shielded, so that great potential safety hazard exists. In addition, in the technical scheme of the prior art, the discharge gap between the copper electrode and the tungsten electrode is small, and the copper electrode and the tungsten electrode cannot be successfully applied to biomedicine. In the prior art, low-temperature plasma needs to be generated under the low pressure of 0.1Pa to 500Pa, which means that experiments need to be carried out under the low-pressure closed environment to achieve satisfactory experimental results. The condition limits the large-scale application of the low-temperature plasma generating device in medical clinic, and the application cost is high. The technical defects of the prior art are as follows: the operating state of the output end of the high-frequency pulse circuit fluctuates, and the emission of the plasma is easily uneven.

In the prior art, the plasma power supply generally comprises a direct current power supply, an alternating current power supply, a radio frequency power supply, a microwave power supply and a direct current pulse power supply, and experiments prove that generally adopts a high-voltage direct current pulse power supply which is safer and generates relatively low jet temperature in medicine.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that kinds of atmospheric pressure low temperature plasma emitter and because its therapeutic instrument are provided, can overcome the inhomogeneous technical problem of outgoing that plasma received the fluctuation of high frequency pulse voltage and arouses.

The technical scheme adopted for solving the technical problems is as follows:

atmospheric pressure low temperature plasma emission device comprises a high frequency pulse circuit, the high frequency pulse circuit comprises a load device, the load device comprises a high voltage electrode, a medium layer wrapping the high voltage electrode, an insulating layer wrapping the medium layer and a conductive shell wrapping the insulating layer, a gas channel is arranged between the medium layer and the insulating layer, the gas channel penetrates through the load device along the length direction of the high voltage electrode, the conductive shell acts as a ground pole and acts with the high voltage electrode to generate plasma, the gas channel comprises a channel, a buffer cavity and a second channel, the channel is communicated with the end of the load device, the second channel is communicated with the other end of the load device, the buffer cavity is arranged between the channel and the second channel, and the gas flow capacity of the channel and the second channel is smaller than that of the buffer cavity.

The high-voltage electrode is characterized in that the dielectric layer comprises an th dielectric pipe sleeve and a second dielectric pipe sleeve, the insulating layer comprises a th insulating pipe sleeve and a second insulating pipe sleeve, the 0 th dielectric pipe sleeve wraps the outer side and the 1 end of the high-voltage electrode, the second dielectric pipe sleeve is nested outside the 2 th dielectric pipe sleeve and wraps the end of the th dielectric pipe sleeve, a ventilation gap is formed between the th dielectric pipe sleeve and the second dielectric pipe sleeve to form a second channel, the th insulating pipe sleeve is nested outside the second dielectric pipe sleeve and wraps the end of the second dielectric pipe sleeve, the second insulating pipe sleeve is nested outside the th dielectric pipe sleeve, the th channel penetrates through the second insulating pipe sleeve, and the buffer cavity is formed at the position where the th insulating pipe sleeve is connected with the.

As an improvement, th insulators and second insulators are respectively arranged at two ends of the conductive shell, a th through hole is formed in the th insulator and is communicated with the second channel, and the second insulators are arranged at the end of the high-voltage electrode and wrap the outer side of the high-voltage electrode.

As an improvement, the conductive shell is made of metal, the dielectric layer is made of quartz, and the insulating layer, the th insulator and the second insulator are made of teflon.

As an improvement, an output wire is arranged between the high-voltage electrode and the high-frequency pulse circuit, the output wire comprises an electric wire, an air pipe and a protective layer, and the protective layer is wrapped outside the electric wire and the air pipe.

As an improvement, the protective layer is a metal hose, a third insulating pipe sleeve wrapping the electric wire is arranged outside the electric wire, and the third insulating pipe sleeve is made of Teflon materials.

As an improvement, a plurality of third insulators nested between the electric wire and the protective layer are arranged in the protective layer, the third insulators are made of Teflon, second through holes and third through holes are formed in the third insulators respectively, the electric wire penetrates through the second through holes and enables the high-voltage electrode to be connected with the high-frequency pulse circuit, and the air pipe penetrates through the third through holes and supplies air for the air channel.

As an improvement, the protective layer is a high-voltage wire provided with an inner layer shielding net.

therapeutic instruments including atmospheric pressure low-temperature plasma emitters.

The high-voltage plasma generator has the beneficial effects that the flow capacity of the buffer cavity is smaller than that of the th channel and the second channel, so that the flow rate of plasma generated by the high-voltage electrode in the buffer cavity can be regulated, and the plasma can be uniformly sprayed out of the load device.

Drawings

The present invention will be described in with reference to the accompanying drawings:

fig. 1 is a schematic structural view of a load device according to embodiment 1 of the present invention;

fig. 2 is a cross-sectional view of a cross-section a of fig. 1 according to embodiment 1 of the present invention;

fig. 3 is a schematic structural view of an output wire rod according to embodiment 1 of the present invention;

fig. 4 is a cross-sectional view of the cross section B of fig. 3 according to embodiment 1 of the present invention;

fig. 5 is a schematic structural view of a third insulator according to embodiment 1 of the present invention;

fig. 6 is a circuit diagram of kinds of high-frequency pulse circuits according to embodiment 1 of the present invention;

fig. 7 is an overall configuration diagram of embodiment 1 of the present invention.

Detailed Description

Example 1:

referring to fig. 1 to 7, atmospheric pressure low temperature plasma emission devices comprise a high frequency pulse circuit, wherein the high frequency pulse circuit comprises a load device 1, the load device 1 comprises a high voltage electrode 2, a dielectric layer wrapping the high voltage electrode 2, an insulating layer wrapping the dielectric layer and a conductive shell 3 wrapping the insulating layer, a gas channel is arranged between the dielectric layer and the insulating layer, the gas channel penetrates through the load device 1 along the length direction of the high voltage electrode 2, the conductive shell 3 acts as a ground electrode and the high voltage electrode 2 to generate plasma, the gas channel comprises a channel 4, a buffer cavity 5 and a second channel 6, the channel 4 is communicated with a end of the load device 1, the second channel 6 is communicated with another end of the load device 1, the buffer cavity 5 is arranged between the channel 4 and the second channel 6, and the channel 4 and the second channel 6 have smaller gas flow capacity than the buffer cavity 5.

As an improvement, the dielectric layer comprises an th dielectric sleeve 7 and a second dielectric sleeve 8, the insulating layer comprises a th insulating sleeve 9 and a second insulating sleeve 10, the 0 th dielectric sleeve 7 wraps the outer side and the 1 end of the high-voltage electrode 2, the second dielectric sleeve 8 is nested outside the 2 th dielectric sleeve 7 and wraps the end of the th dielectric sleeve 7, a ventilation gap is formed between the th dielectric sleeve 7 and the second dielectric sleeve 8 and forms a second channel 6, the th insulating sleeve 9 is nested outside the second dielectric sleeve 8 and wraps the end of the second dielectric sleeve 8, the second insulating sleeve 10 is nested outside the th dielectric sleeve 7, the th channel 4 penetrates through the second insulating sleeve 10, and the buffer cavity 5 is arranged at the joint of the th insulating sleeve 9 and the second insulating sleeve 10.

As a modification, the conductive shell 3 is provided with

th insulators

11 and 12 at two ends respectively, the th insulator 11 is provided with th through holes 13 and communicated with the second channel 6, and the second insulator 12 is arranged at the end of the high-voltage electrode 2 and wraps the outside of the high-voltage electrode 2.

In a modification, the conductive shell 3 is made of metal, the dielectric layer is made of quartz, and the insulating layer, the th insulator 11 and the second insulator 12 are made of teflon.

As an improvement, an output wire is arranged between the high-voltage electrode 2 and the high-frequency pulse circuit, the output wire comprises an electric wire 14, an air pipe 15 and a protective layer 16, and the protective layer 16 is wrapped outside the electric wire 14 and the air pipe 15.

As an improvement, the protective layer 16 is a metal hose, a third insulating pipe sleeve 17 wrapping the electric wire 14 is arranged outside the electric wire 14, and the third insulating pipe sleeve 17 is made of Teflon materials.

As an improvement, a plurality of third insulators 18 nested between the electric wire 14 and the protective layer 16 are arranged in the protective layer 16, the third insulators 18 are made of Teflon, second through holes 19 and third through holes 20 are respectively formed in the third insulators 18, the electric wire 14 penetrates through the second through holes 19 and enables the high-voltage electrode 2 to be connected with a high-frequency pulse circuit, and the air pipe 15 penetrates through the third through holes 20 and supplies air for an air channel.

Referring to fig. 6, high frequency pulse circuits include a dc power supply 21, a diode 22, a 0 th inductive element 23, a 1 th discharge switch 24, a 2 th capacitive element 25, a second inductive element 26, a third inductive element 27, and a load device 1, wherein the dc power supply 21, the diode 22, the th inductive element 23, and the th discharge switch 24 are connected in series to form a loop, the second inductive element 26 is connected in parallel with the th discharge switch 24, the th capacitive element 25 is disposed between the th discharge switch 24 and the second inductive element 26, the th capacitive element 25 is connected in series with the second inductive element 26, the third inductive element 27 is coupled with the second inductive element 26 to form a transformer, the load device 1 is connected in parallel with the third inductive element 27, and an overvoltage suppression circuit is disposed around the th discharge switch 24.

The overvoltage suppression circuit comprises a fourth inductive element 28, a second capacitive element 29, a second resistive element 30 and a fifth inductive element 31, a th discharge switch 24, a th capacitive element 25, a fifth inductive element 31, a second resistive element 30 and the second inductive element 26 are connected in series to form a loop, the fourth inductive element 28 is connected in parallel with the second inductive element 26, and the second capacitive element 29 is connected in parallel with the second inductive element 26. the overvoltage suppression circuit also comprises a second discharge switch 32 and a second diode 33, wherein a end of the second discharge switch 32 is connected with the th discharge switch 24, another end of the second discharge switch 32 is connected with the anode of the second diode 33, and the cathode of the second diode 33 is connected with the anode of the direct-current power supply 21.

The overvoltage suppression circuit of the embodiment can suppress the generation of overvoltage by the high-frequency pulse circuit, and can improve the reliability and stability of the output voltage.

The high-frequency pulse circuit of the technical scheme has two working modes:

in the mode , when the th discharge switch 24 is turned on, the 0 th capacitive element 25 discharges the th inductive element 23 through the th discharge switch 24, voltage pulses are applied across the th inductive element 23, high voltage pulses are induced across the third inductive element 27 in the secondary winding of the transformer and output to the load device 1, and at the same time, the th diode 22 is turned on, and the voltage of the dc power supply 21 is entirely applied to the th inductive element 23, so that the current passing through the th inductive element 23 linearly rises.

Mode two when the discharge switch 24 is open, the dc power supply 21 charges the th capacitive element 25 through the th diode 22, the th inductive element 23, and the transformer's primary winding second inductive element 26. since the current is gradually reduced during charging, the voltage across the th inductive element 23 is reversed, and thus the th capacitive element 25 is fully charged, the th inductive element 23 is at a higher voltage than the dc power supply 21. a movable magnetic core is provided in the transformer, which can be reset.

The conductive shell 3 of the load device 1 of the embodiment is made of an aluminum alloy material, the surface of the conductive shell 3 is provided with a plurality of mutually staggered anti-slip grooves, the holding hand feeling of the load device 1 can be improved through the anti-slip grooves, the conductive shell 3 is connected with a ground wire and serves as a ground pole of the load device 1, the conductive shell 3 can also protect the body of the load device 1, and the conductive shell 3 can also be made of other materials with conductive performance and fixed structural strength.

The overvoltage suppression circuit can ensure the normal operation of the circuit, suppress the overvoltage generated by the high-frequency pulse circuit and improve the reliability and stability of the output voltage.

The insulating layer made of teflon and the dielectric layer made of quartz have good electrical insulation and safety, so that the load device 1 has good reliability and safety.

The plasma generated by the technical scheme has low temperature and can directly treat human skin, the length and other discharge parameters of the plasma can be changed according to needs, the sterilization and disinfection effects are obvious, and the -wide medical application value is realized.

The electric wire 14 of this embodiment is a silica gel high-voltage wire, which has good electrical insulation and safety.

The conductive shell 3 is used as a ground pole and acts with the high-voltage electrode 2 to generate plasma, and the plasma can be sprayed out along with the gas flow in the gas channel.

The flow capacity of the buffer cavity 5 is smaller than that of the th channel 4 and the second channel 6, so that the flow rate of the plasma generated by the high-voltage electrode 2 in the buffer cavity 5 can be adjusted, and the plasma can be uniformly sprayed out of the load device 1.

The arrangement of the medium sleeve 7, the second medium sleeve 8, the insulating sleeve 9 and the second insulating sleeve 10 facilitates the formation of gas channels and facilitates manufacture and assembly.

The protective layer 16 is a metal hose having a shielding capability equivalent to that of a metal shielding net, which is beneficial to make the load device 1 work stably and reliably.

The third insulating pipe sleeve 17, the th insulating body 11 and the second insulating body 12 made of teflon enable the load device 1 to have good insulating capability, and are beneficial to improving the working stability and safety of the load device 1.

The third insulator 18 is of teflon. The number of the third insulators 18 of the present embodiment is two, and two third insulators 18 are arranged near the load device 1 and the output end of the transformer, respectively. The third insulation can improve the working stability and safety of the output wire.

Referring to fig. 7, the overall structure of the embodiment is schematically illustrated, and the embodiment includes a case 34, an output wire and a load device 1, the output wire connects the case 34 and the load device 1, the case 34 is provided with an th display screen 35 capable of displaying electrical parameters, a second display screen 36 capable of displaying gas flow, a knob 38 capable of adjusting device parameters, and a plurality of buttons 37, the case 34 is further provided with a power switch 40 and a fuse 39 capable of controlling power on and off, the fuse 39 can be fused to protect devices when device current is abnormal, and the case 34 is further provided with a handle 41 to facilitate carrying of the case 34.

Example 2:

referring to fig. 1 to 7, the present embodiment is different from embodiment 1 in that: the third insulating pipe sleeve 17 and the third insulator 18 in embodiment 1 are not required to be provided in this embodiment, and the protective layer 16 in this embodiment is replaced by a high-voltage wire provided with an inner shielding net.

The high-voltage electrode 2 of this embodiment is connected with the output of transformer through output wire, and this connected mode can guarantee operating personnel's safety and the normal operating of equipment. The output wire is a wire containing an inner shielding net, which is beneficial to improving the insulation shielding capability of the output wire, so that the load device 1 can continuously and stably discharge and generate plasma.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the gist of the present invention within the knowledge of those skilled in the art.

Claims

The atmospheric pressure low-temperature plasma emission device is characterized by comprising a high-frequency pulse circuit, wherein the high-frequency pulse circuit comprises a load device (1), the load device (1) comprises a high-voltage electrode (2), a dielectric layer wrapping the high-voltage electrode (2), an insulating layer wrapping the dielectric layer and a conductive shell (3) wrapping the insulating layer, a gas channel is arranged between the dielectric layer and the insulating layer and penetrates through the load device (1) along the length direction of the high-voltage electrode (2), the conductive shell (3) serves as a ground electrode and acts with the high-voltage electrode (2) to generate plasma, the gas channel comprises a channel (4), a buffer cavity (5) and a second channel (6), the channel (4) is communicated with a end of the load device (1), the second channel (6) is communicated with another end of the load device (1), the buffer cavity (5) is arranged between the channel (4) and the second channel (6), and the overcurrent capacity of the channel (4) and the second channel (6) is smaller than that of the buffer cavity (5).
2. The kind of atmospheric pressure low temperature plasma emission device according to claim 1, wherein the dielectric layer comprises a dielectric sleeve (7) and a second dielectric sleeve (8), the insulating layer comprises a insulating sleeve (9) and a second insulating sleeve (10), a 1 dielectric sleeve (7) wraps the outer side and the end of the high voltage electrode (2), the second dielectric sleeve (8) is nested outside a dielectric sleeve (7) and wraps the end of the dielectric sleeve (7), a ventilation gap is formed between the dielectric sleeve (7) and the second dielectric sleeve (8) and forms the second channel (6), a insulating sleeve (9) is nested outside the second dielectric sleeve (8) and wraps the end of the second dielectric sleeve (8), a second insulating sleeve (10) is nested outside a dielectric sleeve (7), the channel (4) penetrates through the second insulating sleeve (10), and the buffer cavity (5) is connected with the second insulating sleeve () and the 68510).
3. The atmospheric pressure low temperature plasma emitter according to claim 2, wherein the conductive housing (3) has a th insulator (11) and a second insulator (12) at its two ends, the th insulator (11) has a th through hole (13) and communicates with the second channel (6), and the second insulator (12) is disposed at the end of the high voltage electrode (2) and wraps the outside of the high voltage electrode (2).
4. The atmospheric pressure low temperature plasma emitter according to claim 3, wherein the conductive housing (3) is made of metal, the dielectric layer is made of quartz, and the insulating layer, the th insulator (11) and the second insulator (12) are made of Teflon.
5. The kind of atmospheric pressure low temperature plasma emitter apparatus as claimed in any of claims 1 to 4, wherein an output wire is provided between the high voltage electrode (2) and the high frequency pulse circuit, the output wire includes an electric wire (14), a gas pipe (15) and a protective layer (16), and the protective layer (16) is wrapped outside the electric wire (14) and the gas pipe (15).
6. The atmospheric-pressure low-temperature plasma emitter according to claim 5, wherein the protective layer (16) is a metal hose, a third insulating sleeve (17) wrapping the electric wire (14) is arranged outside the electric wire (14), and the third insulating sleeve (17) is made of Teflon.
7. The atmospheric pressure low temperature plasma emitter according to claim 6, wherein a plurality of third insulators (18) nested between the wire (14) and the protective layer (16) are disposed in the protective layer (16), the third insulators (18) are made of Teflon, the third insulators (18) are respectively provided with a second through hole (19) and a third through hole (20), the wire (14) passes through the second through hole (19) and connects the high voltage electrode (2) with the high frequency pulse circuit, and the gas pipe (15) passes through the third through hole (20) and supplies gas to the gas channel.
8. The atmospheric pressure low temperature plasma emitter according to claim 7, wherein the protective layer (16) is a high voltage wire (14) provided with an inner shielding mesh.
An apparatus of comprising atmospheric pressure low temperature plasma emitter of any of claims 1 to 8.