TWI702934B - Atmospheric pressure plasma device with endoscopy capability - Google Patents

Abstract

An atmospheric pressure plasma device with endoscopy capability comprising a pulse generator, a gas source, a plasma generator, and a flexible extending unit is provided. The plasma generator is electrically connected to the pulse generator to receive a high voltage pulse, and is connected to the gas source to receive a working gas. The flexible extending unit comprises a plasma extending tube, an endoscopy signal line, and a gas exhaust pipe. The plasma extending tube has a connecting end for connecting to the plasma generator and a plasma nozzle. The endoscopy signal line has a proximal end for connecting to a monitor and a distal end. The gas exhaust pipe has an upstream end and a downstream end for connecting to a gas pump. The distal end and the upstream end are disposed by the plasma nozzle.

Description

Low-temperature atmospheric plasma device with internal vision function

The present invention relates to a low-temperature atmospheric plasma device, in particular to a low-temperature atmospheric plasma device with internal vision function.

In recent years, atmospheric plasma has been gradually applied to the activation and treatment of human skin as a non-invasive treatment solution.

However, the traditional atmospheric plasma device is too large, which is not conducive to the application in the field of biomedicine. However, the traditional atmospheric plasma device is too large and unfavorable for operation and use. In addition, due to the design of plasma nozzles, traditional atmospheric plasma devices cannot treat inaccessible tissue surfaces such as the inside of the body. In addition, doctors cannot check the condition of the affected area immediately when performing plasma treatment or sterilization.

In view of this, the present invention provides a low-temperature atmospheric plasma device with internal vision function, which can perform plasma treatment on the tissue surface inside the body, and allows the user to check the condition of the affected area in real time.

The invention provides a low-temperature atmospheric plasma device with internal vision function. This low-temperature atmospheric plasma device with internal vision function includes a pulse Impulse generator, a gas source, a plasma generator and a flexible extension unit. Among them, the pulse generator is used to generate a high-voltage pulse. The gas source is used to provide a working gas. The plasma generator includes a tube body, a first electrode, a second electrode, a gas inlet and a plasma outlet. Wherein, the first electrode and the second electrode are electrically connected to the pulse generator to receive high-voltage pulses to be applied to the tube. The gas inlet and the plasma outlet are arranged on the tube body, and the gas inlet is connected to a gas source to obtain working gas. The flexible extension unit includes a plasma extension pipe, an internal video signal line and an exhaust pipe. The plasma extension tube includes a connecting end and a plasma spraying end opposite to the connecting end. The connecting end is connected to the plasma outlet. The internal video signal line includes a near end and a far end. The near end is used for coupling to an external screen of the endoscope. The exhaust pipe includes a front end and a rear end. The tail end is used to connect to a gas pump. The distal end and the front end are located on the side of the plasma jet end.

Compared with the traditional technology, the low-temperature atmospheric plasma device with internal vision function of the present invention can perform plasma treatment on the tissue surface inside the body, and allows the user to check the condition of the affected area in real time to make adjustments to facilitate plasma treatment get on.

The specific embodiments adopted in the present invention will be further explained by the following embodiments and drawings.

10‧‧‧Low temperature atmospheric plasma device

12‧‧‧Pulse Generator

13‧‧‧Flow Controller

14‧‧‧Gas source

16‧‧‧Plasma Generator

18,28,38,48‧‧‧Flexible extension unit

161‧‧‧Tube body

162‧‧‧First electrode

164‧‧‧Second electrode

166‧‧‧Gas inlet

168‧‧‧Plasma export

HV‧‧‧High voltage output terminal

G‧‧‧Ground terminal

182,282,382,482‧‧‧Plasma extension tube

184,284,384,484‧‧‧Internal video cable

186,286,386,486‧‧‧Exhaust pipe

1822‧‧‧Connecting terminal

1824‧‧‧Plasma injection end

1842‧‧‧Proximal

1844‧‧‧Remote

20‧‧‧External screen of endoscope

1862‧‧‧Front end

1864‧‧‧End

30‧‧‧Gas pump

28a, 38a‧‧‧Center

28b,38b‧‧‧peripheral part

The first figure is a schematic configuration diagram of an embodiment of the low-temperature atmospheric plasma apparatus with internal viewing function of the present invention.

The second figure is an embodiment of the internal configuration of the flexible extension unit of the present invention Schematic cross-section.

The third figure is a schematic cross-sectional view of another embodiment of the internal configuration of the flexible extension unit of the present invention.

The fourth figure is a schematic cross-sectional view of another embodiment of the internal configuration of the flexible extension unit of the present invention.

The specific embodiments of the present invention will be described in more detail below with reference to the schematic diagram. According to the following description and the scope of patent application, the advantages and features of the present invention will be more clear. It should be noted that the drawings all adopt very simplified forms and all use imprecise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

The first figure is a schematic configuration diagram of an embodiment of the low-temperature atmospheric plasma apparatus with internal viewing function of the present invention. As shown in the figure, the low-temperature atmospheric plasma apparatus 10 with internal vision function includes a pulse generator 12, a gas source 14, a flow controller 13, a plasma generator 16 and a flexible extension unit 18 .

The pulse generator 12 is used to generate a high voltage pulse. It is provided to the plasma generator 16 to generate atmospheric plasma. In one embodiment, the pulse generator 12 is a DC pulse generator, an AC pulse generator or a radio frequency pulse generator. In terms of the waveform of the high-voltage pulse, the high-voltage pulse can be a square wave pulse or a sine wave pulse.

The gas source 14 is used to provide a working gas to the plasma generator 16. The working gas can be nitrogen, an inert gas, such as helium or argon, or a mixed gas, such as a combination of helium and argon. Mixing, mixing of helium and oxygen, or mixing of helium and nitrogen, etc.

The flow controller 13 is disposed between the gas source 14 and the plasma generator 16 to control the gas flow provided by the gas source 14 to the plasma generator 16.

The plasma generator 16 includes a tube body 161, a first electrode 162, a second electrode 164, a gas inlet 166 and a plasma outlet 168. The first electrode 162 extends into the tube body 161, and the second electrode 164 is disposed outside the tube body 161 and is separated from the first electrode 162 by a predetermined distance. The first electrode 162 and the second electrode 164 are electrically connected to the pulse generator 12 to receive high voltage pulses.

In one embodiment, the tube body 161 is made of insulating material (such as glass, quartz, etc.). The first electrode 162 is a tungsten electrode. The tungsten electrode extends into the tube body 161 and is electrically connected to a high voltage output terminal HV. The second electrode 164 is a copper ring electrode. The copper ring electrode is ringed on the outside of the tube body 161 and electrically connected to a ground terminal G. The pulse generator 12 generates high-voltage pulses through the high-voltage output terminal HV and the ground terminal G. In this way, the high-voltage pulse generated by the pulse generator 12 can be applied to the tube 161. More precisely, it is applied to the space between the first electrode 162 and the second electrode 164 in the tube body 161 to generate atmospheric plasma.

The gas inlet 166 and the plasma outlet 168 are arranged on the tube body 161. The gas inlet 166 is connected to the gas source 14 through the flow controller 13 to obtain working gas. The working gas system from the gas source 14 enters the inside of the tube body 161 through the gas inlet 166, and is matched with the high-voltage pulse generated by the pulse generator 12 to generate atmospheric plasma to be ejected from the plasma outlet 168.

The configuration of the plasma generator 16 described above, especially the configuration of the first electrode 162 and the second electrode 164 is only an example of this case. Any plasma generator 16 that has a plasma outlet 168 capable of injecting atmospheric plasma outward can be suitable for the present invention.

The flexible extension unit 18 includes a plasma extension pipe 182, an internal video signal line 184 and an exhaust pipe 186.

The plasma extension tube 182 includes a connection end 1822 and a plasma injection end 1824 opposite to the connection end 1822. The connecting end 1822 of the plasma extension tube 182 is connected to the plasma outlet 168. The atmospheric plasma from the plasma outlet 168 is guided by the plasma extension tube 182 to be ejected from the plasma injection end 1824. Furthermore, the atmospheric plasma generated in the plasma generator 16 will follow the internal air flow, flow from the plasma outlet 168 to the plasma extension pipe 182, and be ejected from the plasma injection end 1824. In one embodiment. The plasma extension tube 182 is a silicone hose with excellent insulation effect to ensure that the plasma can be smoothly ejected from the plasma injection end 1824.

The internal video signal line 184 includes a near end 1842 and a far end 1844. The proximal end 1842 is used for coupling to an external endoscope screen 20. The distal end 1844 is arranged side by side of the plasma injection end 1824 to facilitate immediate inspection of the tissue surface inside the body undergoing atmospheric plasma treatment.

The exhaust pipe 186 includes a front end 1862 and a rear end 1864. The tail 1864 is used to connect to a gas pump 30. The front end 1862 is arranged on the side of the plasma injection end 1824 to eliminate the gas ejected from the plasma injection end 1824.

As shown in the figure, in this embodiment, the internal video signal line The 184 and the exhaust pipe 186 are arranged side by side at the side of the plasma extension pipe 182 to form a bundle to facilitate the extension into the body.

The second figure is a schematic cross-sectional view of an embodiment of the internal configuration of the flexible extension unit of the present invention. Compared with the embodiment in the first figure, the internal video signal line 184 and the exhaust pipe 186 are arranged side by side and assembled into a bundle on the side of the plasma extension pipe 182. The flexible extension unit 28 of this embodiment includes a central portion 28a and a peripheral portion 28b, the plasma extension tube 282 is located in the central portion 28a, the inner video signal line 284 is located in the peripheral portion 28b, and the exhaust pipe 286 is located between the plasma extension tube 282 and the inner video signal line 284. In other words, the plasma extension pipe 282, the exhaust pipe 286 and the internal video signal line 284 form a concentric circle structure. This configuration helps to reduce the cross-sectional width of the flexible extension unit 28 to facilitate extension into the body.

The third figure is a schematic cross-sectional view of another embodiment of the internal configuration of the flexible extension unit of the present invention. Compared with the embodiment in the second figure, the flexible extension unit 38 of this embodiment also includes a central portion 38a and a peripheral portion 38b. The plasma extension tube 382 is located at the central portion 38a, and the internal video signal line 384 is located at Peripheral portion 38b. However, the exhaust pipe 386 of this embodiment is arranged on the outside of the inner video signal line 384 side by side. In one embodiment, the exhaust pipe 386 has a round pipe structure.

The fourth figure is a schematic cross-sectional view of another embodiment of the internal configuration of the flexible extension unit of the present invention. Compared with the embodiments in the second and third figures, they all have a concentric structure. The plasma extension tube 482, the internal video signal line 484 and the exhaust pipe 486 of the flexible extension unit 48 of this embodiment are all It presents a round tube structure, and the two are close together into a bunch. This configuration method can reduce manufacturing costs.

Compared with the traditional technology, the low-temperature atmospheric plasma device 10 with internal vision function of the present invention has flexible extension units 18, 28, 38, 48 that can perform plasma treatment on the tissue surface inside the body and can be used The person can check the condition of the affected part immediately and make adjustments to facilitate the plasma treatment.

The above are only preferred embodiments of the present invention and do not limit the present invention in any way. Any person skilled in the art, without departing from the scope of the technical means of the present invention, makes any form of equivalent replacement or modification or other changes to the technical means and technical content disclosed by the present invention, which does not depart from the technical means of the present invention. The content still falls within the protection scope of the present invention.

10‧‧‧Low temperature atmospheric plasma device

12‧‧‧Pulse Generator

13‧‧‧Flow Controller

14‧‧‧Gas source

16‧‧‧Plasma Generator

18‧‧‧Flexible extension unit

161‧‧‧Tube body

162‧‧‧First electrode

164‧‧‧Second electrode

166‧‧‧Gas inlet

168‧‧‧Plasma export

HV‧‧‧High voltage output terminal

G‧‧‧Ground terminal

182‧‧‧Plasma extension tube

184‧‧‧Internal video cable

186‧‧‧Exhaust pipe

1822‧‧‧Connecting terminal

1824‧‧‧Plasma injection end

1842‧‧‧Proximal

1844‧‧‧Remote

20‧‧‧External screen of endoscope

1862‧‧‧Front end

1864‧‧‧End

30‧‧‧Gas pump

Claims (9)

A low-temperature atmospheric plasma device with internal vision function, comprising: a pulse generator for generating a high-voltage pulse; a gas source for providing a working gas; a plasma generator including a tube body and a first An electrode, a second electrode, a gas inlet, and a plasma outlet, wherein the first electrode and the second electrode are electrically connected to the pulse generator to receive the high voltage pulse applied to the tube, the gas inlet The plasma outlet is arranged on the tube body, and the gas inlet is connected to the gas source to obtain the working gas; and a flexible extension unit including a plasma extension tube, an internal video signal line, and An exhaust pipe, the plasma extension pipe includes a connection end and a plasma injection end opposite to the connection end, the connection end is connected to the plasma outlet, the internal video signal line includes a proximal end and a distal end , The proximal end is used to couple to an endoscope external screen, the exhaust pipe includes a front end and a tail end, the tail end is used to connect to a gas pump, and the distal end and the front end are Located on the side of the plasma injection end. For example, the low-temperature atmospheric plasma device of the first item in the scope of patent application, wherein the working gas system is a mixed gas. For example, the low-temperature atmospheric plasma device of the first item of the scope of patent application, wherein the first electrode extends into the tube body, and the second electrode is disposed outside the tube body and spaced a predetermined distance from the first electrode. For example, the low-temperature atmospheric plasma installation of item 1 of the patent application Wherein, the working gas system is helium, argon or nitrogen. For example, the low-temperature atmospheric plasma device of the first item in the scope of patent application, wherein the plasma extension tube is a silicone hose. For example, the low-temperature atmospheric plasma device of the first item of the scope of patent application, wherein the internal video signal line and the exhaust pipe are arranged side by side of the plasma extension pipe. For example, the low-temperature atmospheric plasma device of item 1 of the scope of patent application, wherein the flexible extension unit includes a central portion and a peripheral portion, the plasma extension tube is located at the central portion, and the internal video signal line is located at the Peripheries. For example, the low-temperature atmospheric plasma device of item 7 of the scope of patent application, wherein the exhaust pipe is located between the plasma extension pipe and the internal video signal line. For example, the low-temperature atmospheric plasma device of item 7 of the scope of patent application, wherein the exhaust pipe is arranged side by side on the outside of the inner video signal line.

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