Portable liquid nitrogen jet therapeutic apparatus not easy to block

Abstract

The invention relates to the technical field of medical apparatus and instruments, and provides a portable liquid nitrogen jet therapeutic apparatus not easy to block, which comprises a kettle body, a kettle cover and a heat preservation inner container mounted in the kettle body and the kettle cover, the kettle body and the kettle cover are in threaded connection, and the upper end of the heat preservation inner container is connected with a rubber plug. A thick and straight stainless steel capillary tube and an L-shaped 304 stainless steel capillary tube are connected into the rubber plug. The spraying device and the kettle cover are connected through an auxiliary mechanism, the spraying device can be pushed up and down through stretching and retracting of an electric push rod, the bending angle of the spraying device is adjusted, a spraying head can be freely bent to adapt to more application scenes, and the use convenience of the device is improved; the thick and straight stainless steel capillary tube and the spraying device are connected in a sleeved mode through the rotating structure, the method is different from an existing method that the capillary tube is directly bent, liquid nitrogen circulation between the thick and straight stainless steel capillary tube and the spraying device is ensured, and the situation that the bent position of the capillary tube is blocked due to the fact that the bending radius is reduced is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a portable liquid nitrogen jet therapeutic device that is not prone to clogging. Background Art

[0002] Liquid nitrogen cryotherapy is a new technology in the field of modern therapeutics. Liquid nitrogen cryotherapy is a comprehensive effect of cryobiology. Normal cells will be irreversibly damaged in an extremely frozen state. It kills the cells in the diseased area quickly in an extremely frozen state, so that the diseased area can recover normally. It is generally used to treat benign skin neoplastic lesions, such as common warts, trichoepithelioma, verrucous nevus, seborrheic keratosis, facial sebaceous adenoma, porokeratosis, etc., with good therapeutic effects.

[0003] The existing liquid nitrogen therapeutic device is mainly made of stainless steel, and uses the principle of phase change refrigeration. It relies on the pressure generated by the evaporation of liquid nitrogen to make the liquid nitrogen flow from the liquid nitrogen cup through the infusion tube into the cold head, thereby achieving the effect of cryotherapy. However, the existing liquid nitrogen therapeutic device is heavy, including the liquid nitrogen and the therapeutic device itself. For medical personnel who perform liquid nitrogen therapy, especially spray therapy, it is easy to have unstable hands and misaligned aiming, which may damage the surrounding normal skin. In addition, the existing products need to rely on the pressure generated by the evaporation of liquid nitrogen to operate, and the liquid nitrogen cup needs to be shaken or pressure is generated after phase change. The operation is time-consuming and laborious. The temperature of the freezing head is not well maintained, and the liquid nitrogen spray tube is prone to clogging. It cannot be maintained and cleaned every time it is used, and the service life is short.

[0004] Therefore, we have made improvements to this problem and proposed a portable liquid nitrogen jet therapy device that is not prone to clogging. Summary of the invention

[0005] The purpose of the present invention is to provide a portable liquid nitrogen jet therapy device that is not prone to clogging, so as to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above-mentioned invention object, the present invention provides a portable liquid nitrogen jet therapy device that is not easy to be clogged, comprising a kettle body, a kettle cover and a heat-insulating liner installed inside the kettle body and the kettle cover, the upper end of the heat-insulating liner is connected to a rubber plug, the inside of the rubber plug is connected to a thick straight stainless steel capillary and an L-shaped 304 stainless steel capillary, the upper end of the thick straight stainless steel capillary is movably connected to a spray device, the top end of the spray device is threadedly connected to a nozzle, and the middle part of the spray device is connected to an auxiliary mechanism, the auxiliary mechanism is fixedly installed on the edge of the kettle cover, the upper end of the L-shaped 304 stainless steel capillary is threadedly connected to a trigger device, and the trigger device is fixedly connected to the handle of the kettle body.

[0007] As a further solution of the present invention, the thermal insulation inner liner includes a glass liner, the upper end of the glass liner is fixedly connected with a spacer, the lower section of the L-shaped 304 stainless steel capillary penetrates the spacer for installation, and the lower section of the thick straight stainless steel capillary penetrates the spacer for installation inside the glass liner.

[0008] As a further solution of the present invention, the rubber stopper includes a conical stopper, the upper end of the conical stopper is connected to a spring washer, the spring washer is fixedly connected to the pot lid, the conical stopper is provided with a first through hole and an L-shaped second through hole, the thick straight stainless steel capillary is fixed inside the first through hole, and the L-shaped 304 stainless steel capillary is fixed inside the second through hole.

[0009] As a further solution of the present invention, the thick straight stainless steel capillary includes a connecting tube, the upper end of the connecting tube is fixedly connected to a V-shaped bend tube, both ends of the bend tube are simultaneously sleeved on the injection device, and the bottom end of the connecting tube is fixedly connected to a metal tube, and the metal tube extends to one centimeter above the bottom surface of the glass gall.

[0010] As a further solution of the present invention, the injection device includes a T-shaped injection pipe, a limiting ring is fixedly installed on one side of the internal T-shaped structure of the injection pipe, a sealing plug is connected to the tail end of the injection pipe, a piston is movably installed on the front side of the limiting ring inside the injection pipe, a guide rod is fixedly connected to the rear end of the piston, the guide rod penetrates the sealing plug and is connected to a first spring, and the first spring fixedly connects the guide rod and the sealing plug, a plug is arranged between the piston and the guide rod, and the plug is movably sleeved inside the piston.

[0011] As a further solution of the present invention, the piston comprises a plug shell, a middle portion of the plug shell is connected to a tapered barrel, and the plug shell.

[0012] As a further solution of the present invention, a spike cone is fixedly connected to the top end of the injection pipe, and the middle part of the spike cone is a metal rod with the same length as the piston.

[0013] As a further solution of the present invention, the plug includes a conical blocking block, a pressing groove is formed at the top of the blocking block, the pressing groove and the nail cone are located on the same axis, the bottom end of the blocking block is connected to a connecting plate, and a second spring is connected between the connecting plate and the piston.

[0014] As a further solution of the present invention, the trigger device includes an airbag, the upper end of the airbag is fixedly connected to a rubber tube, the bottom end of the airbag is fixedly connected to an exhaust pipe, the rubber tube is threadedly connected to an L-shaped stainless steel capillary, a limiting plate is arranged inside the airbag, the bottom end of the limiting plate is connected to a bolt, and the bolt penetrates the handle of the kettle body and is connected to a nut.

[0015] As a further scheme of the present invention, the auxiliary mechanism includes a protective sleeve and a fixing part, the bottom end of the protective sleeve is connected to a heat-insulating cylinder, the heat-insulating cylinder is wrapped around the upper end of a thick straight stainless steel capillary, the fixing part is fixedly installed on the upper end of the kettle cover, an electric heating wire is installed in the interlayer space between the protective sleeve and the kettle cover, a switch key is fixedly installed on the end of the protective sleeve, the protective sleeve is sleeved on the middle part of the outer side of the injection device, and connecting parts are fixedly installed on both sides of the protective sleeve, an electric push rod is connected to the connecting part, and the bottom end of the electric push rod is movably connected to the fixing part.

[0016] The portable liquid nitrogen jet therapy device provided by the present invention is not prone to clogging, and its beneficial effects are: 1. By movably installing a spray device on the upper end of a thick straight stainless steel capillary, and connecting the spray device to the kettle cover through an auxiliary mechanism, the spray device can be pushed up and down by the extension and retraction of the electric push rod, and the bending angle of the spray device can be adjusted, so that the nozzle can be freely bent to adapt to more application scenarios, thereby improving the convenience of using the device. The thick straight stainless steel capillary and the spray device are sleeved by a rotating structure, which is different from the existing method of directly bending the capillary, thereby ensuring the circulation of liquid nitrogen between the thick straight stainless steel capillary and the spray device, and avoiding blockage at the bend of the capillary due to the reduction of the bending radius.

[0017] 2. By installing a movable piston and a guide rod inside the injection tube, the guide rod and the injection tube are squeezed by the first spring, and a plug is installed between the piston and the guide rod. When liquid nitrogen is sprayed from the thick straight stainless steel capillary into the injection device, the sprayed liquid nitrogen pushes the piston and the guide rod to slide in the injection tube. When reaching the top of the injection tube, the plug is pushed by the spike cone to separate the plug from the piston. The liquid nitrogen is quickly sprayed along the gap between the piston and the plug. After the injection is completed, the first spring pulls the piston and the guide rod back. The inner wall of the injection tube is wiped through the push-pull process. Maintenance and cleaning can be achieved every time it is used to prevent water molecules and carbon dioxide impurities in the air from entering the container after injection, condensing into ice to cause blockage in the low temperature environment formed by liquid nitrogen, and also to avoid liquid nitrogen residue.

[0018] 3. An auxiliary mechanism is installed inside the injection pipe, and the auxiliary mechanism includes a protective sleeve and a heat preservation tube wrapped around the outside of the thick straight stainless steel capillary and the injection device. The thick straight stainless steel capillary and the injection device are insulated by the protective sleeve and the heat preservation tube. At the same time, an electric heating wire is installed inside the protective sleeve. The injection device is heated by the electric auxiliary heating of the electric heating wire before and after the injection of liquid nitrogen, and the moisture inside and outside the injection device is dried to prevent water molecules and carbon dioxide impurities in the air from entering the container and condensing into ice to cause blockage in the low temperature environment formed by liquid nitrogen, and to ensure smooth pushing and pulling between the injection pipe and the piston of the injection device.

[0019] 4. By sleeved an auxiliary mechanism on the outside of the injection device, the protective sleeve insulates the injection device, improves the insulation effect of the injection device and controls the temperature of the liquid nitrogen. At the same time, since the inside of the glass liner is connected to the outside, the extrusion trigger device keeps the inside of the glass liner in a negative pressure environment to squeeze out the liquid nitrogen inside the glass liner. At the same time, a limit plate is installed inside the airbag. The position of the limit plate inside the airbag is adjusted by rotating the nut to make the pressing depth of the airbag different, thereby controlling the amount of liquid nitrogen sprayed each time, which will not change due to the number of uses, improving the feel of use and lowering the threshold of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A schematic diagram of the structure of a portable liquid nitrogen jet therapy device that is not prone to clogging provided by the present application; Figure 2 A structural cross-sectional view of a portable liquid nitrogen jet therapy device that is not prone to clogging provided by the present application; Figure 3 A schematic diagram of the heat preservation inner tank structure of a portable liquid nitrogen jet therapy device that is not prone to clogging provided by the present application; Figure 4 A schematic diagram of the structure of a rubber plug of a portable liquid nitrogen jet therapy device that is not prone to clogging provided in the present application; Figure 5 A schematic diagram of the connection structure of a thick straight stainless steel capillary and a spray device of a portable liquid nitrogen spray therapy device that is not prone to clogging provided in the present application; Figure 6 A schematic diagram of a partially enlarged structure of a spray device of a portable liquid nitrogen spray therapy device that is not prone to clogging provided by the present application; Figure 7 A schematic diagram of the piston and guide rod structure of a portable liquid nitrogen jet therapy device that is not prone to clogging provided by the present application; Figure 8 A schematic diagram of the structure of a trigger device of a portable liquid nitrogen jet therapy device that is not prone to clogging provided by the present application; Fig. 9 A schematic diagram of the auxiliary mechanism structure of a portable liquid nitrogen jet therapy device that is not prone to clogging provided in this application.

[0022] In the figure: 1, kettle body; 2, kettle cover; 3, heat preservation liner; 31, glass liner; 32, spacer; 4, rubber plug; 41, tapered plug; 42, first through hole; 43, second through hole; 44, spring pad; 5, thick straight stainless steel capillary; 51, connecting pipe; 52, elbow; 53, metal pipe; 6, injection device; 61, injection pipe; 62, sealing plug; 63, piston; 631, plug shell; 632, barrel; 64, guide rod; 65, first spring; 66, limit ring; 67, plug; 671 , block; 672, press groove; 673, connecting plate; 674, second spring; 68, nail cone; 7, nozzle; 8, L-shaped 304 stainless steel capillary; 9, trigger device; 91, air bag; 92, rubber tube; 93, limit plate; 94, bolt; 95, nut; 96, exhaust pipe; 10, auxiliary mechanism; 1001, protective cover; 1002, connecting piece; 1003, electric push rod; 1004, fixing piece; 1005, electric heating wire; 1006, switch; 1007, insulation cylinder. DETAILED DESCRIPTION

[0023] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples of the specification. The following examples are only used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0024] like Figure 1-Figure 9 As shown, the present embodiment proposes a portable liquid nitrogen jet therapy device which is not easy to be clogged, comprising a threaded kettle body 1, a kettle cover 2 and a heat-insulating liner 3 installed inside the kettle body 1 and the kettle cover 2, the upper end of the heat-insulating liner 3 is connected with a rubber plug 4, the inside of the rubber plug 4 is connected with a thick straight stainless steel capillary 5 and an L-shaped 304 stainless steel capillary 8, the upper end of the thick straight stainless steel capillary 5 is movably connected with a spray device 6, the top end of the spray device 6 is threadedly connected to a nozzle 7, and the middle part of the spray device 6 is connected with an auxiliary mechanism 10, the auxiliary mechanism 10 is fixedly installed on the edge of the kettle cover 2, the upper end of the L-shaped 304 stainless steel capillary 8 is threadedly connected with a trigger device 9, and the trigger device 9 is fixedly connected to the handle of the kettle body 1.

[0025] The heat-insulating liner 3 includes a glass liner 31, the upper end of the glass liner 31 is fixedly connected with a spacer 32, the lower section of the L-shaped 304 stainless steel capillary 8 penetrates the spacer 32 for installation, and the lower section of the thick straight stainless steel capillary 5 penetrates the spacer 32 for installation inside the glass liner 31, so that the internal air pressure of the glass liner 31 is consistent with the external air pressure. When the trigger device 9 is squeezed, a negative pressure environment is formed inside the glass liner 31, and the liquid nitrogen inside the glass liner 31 is pushed out by the pressure difference, so as to avoid the concentration of liquid nitrogen inside the glass liner 31 from decreasing, and the amount of each spray is controlled so as not to change due to the number of times of use.

[0026] The rubber plug 4 includes a tapered plug 41, the upper end of which is connected to a spring washer 44, which is fixedly connected to the pot cover 2. A first through hole 42 and an L-shaped second through hole 43 are provided on the tapered plug 41, a thick straight stainless steel capillary 5 is fixed inside the first through hole 42, and an L-shaped 304 stainless steel capillary 8 is fixed inside the second through hole 43. The first through hole 42 and the second through hole 43 seal and fix the installation of the thick straight stainless steel capillary 5 and the L-shaped 304 stainless steel capillary 8. There is no jamming between the tapered plug 41 and the heat-insulating inner liner 3, and the spring washer 44 presses on the glass liner 31. If the pressure inside the glass liner 31 increases, the tapered plug 41 will be pushed up for exhaust, eliminating safety hazards.

[0027] The thick straight stainless steel capillary 5 includes a connecting tube 51, the upper end of which is fixedly connected to a V-shaped curved tube 52, both ends of which are simultaneously sleeved on the injection device 6, the bottom end of the connecting tube 51 is fixedly connected to a metal tube 53, and the metal tube 53 extends to one centimeter above the bottom surface of the glass liner 31. The thick straight stainless steel capillary 5 is connected to the interior of the thermal insulation liner 3 to discharge the liquid nitrogen inside the thermal insulation liner 3.

[0028] The spray device 6 includes a T-shaped spray tube 61, a limiting ring 66 is fixedly installed on one side of the internal T-shaped structure of the spray tube 61, a sealing plug 62 is connected to the tail end of the spray tube 61, a piston 63 is movably installed on the front side of the limiting ring 66 inside the spray tube 61, a guide rod 64 is fixedly connected to the rear end of the piston 63, the guide rod 64 penetrates the sealing plug 62 and is connected to a first spring 65, and the first spring 65 fixes the guide rod 64 and the sealing plug 62 together, a plug 67 is arranged between the piston 63 and the guide rod 64, and the plug 67 is movably sleeved inside the piston 63, and the sprayed liquid nitrogen pushes the piston 63 and the guide rod 64 to slide in the spray tube 61, and when it reaches the top of the spray tube 61, it passes through the spike cone 68 Push the plug 67 to separate the plug 67 from the piston 63, and the liquid nitrogen will be quickly sprayed out along the gap between the piston 63 and the plug 67. After the spraying is completed, the first spring 65 will pull the piston 63 and the guide rod 64 back. The inner wall of the injection pipe 61 will be wiped during the pushing and pulling process of the piston 63. Maintenance and cleaning can be achieved every time it is used to prevent water molecules and carbon dioxide impurities in the air from entering the container after spraying, and condensing into ice to cause blockage in the low temperature environment formed by liquid nitrogen, and also to avoid liquid nitrogen residue. Ultra-low temperature resistant LNG sealing rings are used at the joints between the sealing plug 62 and the injection pipe 61, and the guide rod 64 and the sealing plug 62. The applicable temperature is between -200 and +300°C to prevent liquid nitrogen leakage.

[0029] The piston 63 includes a plug shell 631, and a tapered barrel 632 is connected to the middle of the plug shell 631. When liquid nitrogen is sprayed out, the plug shell 631 drives the plug shell 631 to slide inside the injection pipe 61, so as to wipe the inside of the injection pipe 61 and remove impurities attached to the inside of the injection pipe 61, so as to avoid blockage caused by impurity moisture and condensation into ice.

[0030] The top of the injection tube 61 is fixedly connected with a spike cone 68, and the middle part of the spike cone 68 is a metal rod with the same length as the piston 63. After the spike cone 68 contacts the front end of the plug 67, the movement of the plug 67 is restricted, so that the piston 63 is separated from the plug 67, and the channel for liquid nitrogen to be sprayed is opened, which is convenient for the injection of liquid nitrogen.

[0031] The plug 67 includes a conical block 671, a top of which is provided with a pressing groove 672, the pressing groove 672 and the spike cone 68 are located on the same axis, the bottom of the block 671 is connected with a connecting plate 673, a second spring 674 is connected between the connecting plate 673 and the piston 63, and the plug 67 is blocked at the opening of the piston 63. When it is not in contact with the spike cone 68, liquid nitrogen cannot be sprayed out through the piston 63, and the thrust generated drives the piston 63 to slide.

[0032] The trigger device 9 includes an airbag 91, the upper end of the airbag 91 is fixedly connected to a rubber tube 92, the bottom end of the airbag 91 is fixedly connected to an exhaust pipe 96, the rubber tube 92 is threadedly connected to the L-shaped 304 stainless steel capillary 8, a limit plate 93 is arranged inside the airbag 91, the bottom end of the limit plate 93 is connected to a bolt 94, the bolt 94 penetrates the handle of the kettle body 1 and is connected to a nut 95, the rubber tube 92 and the airbag 91 blow gas into the glass liner 31, squeeze the liquid nitrogen in the glass liner 31 into the thick straight stainless steel capillary 5, and use the liquid nitrogen for spraying.

[0033] The auxiliary mechanism 10 includes a protective sleeve 1001 and a fixing member 1004. The bottom end of the protective sleeve 1001 is connected with a heat preservation tube 1007, and the heat preservation tube 1007 is wrapped around the upper end of the thick straight stainless steel capillary 5. The fixing member 1004 is fixedly installed on the upper end of the pot cover 2. An electric heating wire 1005 is installed in the interlayer space between the protective sleeve 1001 and the pot cover 2. A switch key 1006 is fixedly installed at the end of the protective sleeve 1001. The protective sleeve 1001 is sleeved on the middle part of the outer side of the injection device 6, and connecting members 1002 are fixedly installed on both sides of the protective sleeve 1001. An electric push rod 1003 is connected to the connecting member 1002. The bottom end of the electric push rod 1003 is movably connected to the fixing member 1004. The protective sleeve 1001 performs heat preservation protection on the injection device 6 and controls the temperature of liquid nitrogen. At the same time, the electric push rod 1003 is extended and retracted to drive the injection device 6 to adjust its angle, so as to facilitate the use of the nozzle 7 in different application modes.

[0034] Specifically, when the portable liquid nitrogen spray therapy device that is not easy to be blocked is used: the kettle body 1 and the kettle cover 2 are screwed and tightened, the kettle cover 2 presses the rubber plug 4 on the heat-insulating inner tank 3, and before operation, the L-shaped 304 stainless steel capillary 8 is separated from the trigger device 9, the kettle cover 2 is unscrewed, and the rubber plug 4 can be pulled out to add liquid nitrogen into the heat-insulating inner tank 3, and the upper end of the thick straight stainless steel capillary 5 is movably installed with a spray device 6, and the spray device 6 and the kettle cover 2 are connected by an auxiliary mechanism 10, and the extension of the electric push rod 1003 can push the spray device 6 up and down to adjust the bending angle of the spray device 6. The inside of 31 maintains a negative pressure environment, squeezes the trigger device 9, and the rubber tube 92 and the air bag 91 blow gas into the glass bladder 31, squeezes the liquid nitrogen in the glass bladder 31 into the thick straight stainless steel capillary 5, and the thick straight stainless steel capillary 5 pours the liquid nitrogen into the injection device 6, and the ejected liquid nitrogen pushes the piston 63 and the guide rod 64 to slide in the injection tube 61. When reaching the top of the injection tube 61, the spike cone 68 pushes the plug 67 to separate the plug 67 from the piston 63, and the liquid nitrogen is quickly ejected along the gap between the piston 63 and the plug 67. After the injection is completed, the first spring 65 pulls the piston 63 and the guide rod 64 back, and through the push-pull The inner wall of the injection tube 61 is wiped during the process, and maintenance and cleaning can be achieved every time it is used, so as to prevent water molecules and carbon dioxide impurities in the air from entering the container after injection, and condensing into ice to cause blockage in the low temperature environment formed by liquid nitrogen, and also to prevent liquid nitrogen residue; by sleeve-connecting the auxiliary mechanism 10 on the outer side of the injection device 6, the protective sleeve 1001 is used to insulate the injection device 6, and the switch key 1006 is turned on to start the electric auxiliary heating of the electric heating wire 1005, so as to heat the injection device 6 before and after the injection of liquid nitrogen, heat the injection tube 61 and the piston 63, and ensure the smoothness of the piston 63 when it is pushed outward. After the liquid nitrogen is sprayed out, the switch key 1006 is closed to stop the heating wire 1005 from heating. The sprayed liquid nitrogen contacts the lesion and then vaporizes, which reduces the temperature of the lesion. At the same time, after the liquid nitrogen treatment is completed, the electric heating wire 1005 is reopened to assist the closing of the piston 63. At this time, the remaining small amount of liquid nitrogen remaining in the injection tube 61 is heated and vaporized, and discharged through the exhaust pipe 96 to avoid excessive pressure in the heat preservation liner 3. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0035] The above embodiments are only used to illustrate the present invention, but not to limit the present invention. Although the present invention is described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalent substitutions of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention, and should be included in the scope of the claims of the present invention.

Claims

1. A portable liquid nitrogen jet therapy device that is not prone to clogging, comprising a threaded kettle body (1), a kettle cover (2), and a heat-insulating liner (3) installed inside the kettle body (1) and the kettle cover (2), characterized in that: The upper end of the heat-insulating inner container (3) is connected to a rubber stopper (4), the interior of the rubber stopper (4) is connected to a thick straight stainless steel capillary (5) and an L-shaped 304 stainless steel capillary (8), the upper end of the thick straight stainless steel capillary (5) is movably connected to a spray device (6), the top end of the spray device (6) is threadedly connected to a nozzle (7), and the middle part of the spray device (6) is connected to an auxiliary mechanism (10), the auxiliary mechanism (10) is fixedly mounted on the edge of the kettle cover (2), the upper end of the L-shaped 304 stainless steel capillary (8) is threadedly connected to a trigger device (9), and the trigger device (9) is fixedly connected to the handle of the kettle body (1).

2. A portable liquid nitrogen jet therapy device that is not easy to clog according to claim 1, characterized in that: The heat-insulating inner container (3) comprises a glass container (31), the upper end of the glass container (31) being fixedly connected to a spacer (32), the lower section of the L-shaped 304 stainless steel capillary tube (8) penetrating the spacer (32) for installation, and the lower section of the thick straight stainless steel capillary tube (5) penetrating the spacer (32) for installation inside the glass container (31).

3. The portable liquid nitrogen jet therapy device that is not easy to clog according to claim 1, characterized in that: The rubber stopper (4) comprises a conical stopper (41), the upper end of the conical stopper (41) is connected to a spring pad (44), the spring pad (44) is fixedly connected to the pot cover (2), the conical stopper (41) is provided with a first through hole (42) and an L-shaped second through hole (43), the thick straight stainless steel capillary (5) is fixed inside the first through hole (42), and the L-shaped 304 stainless steel capillary (8) is fixed inside the second through hole (43).

4. The portable liquid nitrogen jet therapy device that is not easy to clog according to claim 2, characterized in that: The thick straight stainless steel capillary tube (5) comprises a connecting tube (51), the upper end of the connecting tube (51) being fixedly connected to a V-shaped curved tube (52), both ends of the curved tube (52) being simultaneously sleeved on the injection device (6), and the bottom end of the connecting tube (51) being fixedly connected to a metal tube (53), the metal tube (53) extending to a position one centimeter above the bottom surface of the glass vessel (31).

5. The portable liquid nitrogen jet therapy device that is not easy to clog according to claim 1, characterized in that: The injection device (6) comprises a T-shaped injection pipe (61), a limiting ring (66) is fixedly installed on one side of the internal T-shaped structure of the injection pipe (61), the rear end of the injection pipe (61) is connected to a sealing plug (62), a piston (63) is movably installed on the front side of the limiting ring (66) inside the injection pipe (61), the rear end of the piston (63) is fixedly connected to a guide rod (64), the guide rod (64) penetrates the sealing plug (62) and is connected to a first spring (65), and the first spring (65) fixedly connects the guide rod (64) and the sealing plug (62), and a plug (67) is arranged between the piston (63) and the guide rod (64), and the plug (67) is movably sleeved inside the piston (63).

6. The portable liquid nitrogen jet therapy device that is not prone to clogging according to claim 5, characterized in that: The piston (63) comprises a plug shell (631), a conical barrel (632) is connected to the middle of the plug shell (631), and the plug shell (631).

7. The portable liquid nitrogen jet therapy device that is not easy to clog according to claim 5, characterized in that: The top end of the injection pipe (61) is fixedly connected to a spike cone (68), and the middle portion of the spike cone (68) is a metal rod having the same length as the piston (63).

8. The portable liquid nitrogen jet therapy device that is not prone to clogging according to claim 7, characterized in that: The plug (67) comprises a conical block (671), a top end of the block (671) is provided with a pressing groove (672), the pressing groove (672) and the nail cone (68) are located on the same axis, the bottom end of the block (671) is connected to a connecting plate (673), and a second spring (674) is connected between the connecting plate (673) and the piston (63).

9. The portable liquid nitrogen jet therapy device that is not easy to clog according to claim 1, characterized in that: The trigger device (9) comprises an airbag (91), the upper end of the airbag (91) is fixedly connected to a rubber tube (92), the lower end of the airbag (91) is fixedly connected to an exhaust pipe (96), the rubber tube (92) is threadedly connected to an L-shaped 304 stainless steel capillary tube (8), a limit plate (93) is arranged inside the airbag (91), the lower end of the limit plate (93) is connected to a bolt (94), and the bolt (94) penetrates the handle of the kettle body (1) and is connected to a nut (95).

10. The portable liquid nitrogen jet therapy device that is not easy to clog according to claim 1, characterized in that: The auxiliary mechanism (10) comprises a protective sleeve (1001) and a fixing member (1004); the bottom end of the protective sleeve (1001) is connected to a heat-insulating tube (1007), the heat-insulating tube (1007) is wrapped around the upper end of a thick straight stainless steel capillary (5); the fixing member (1004) is fixedly mounted on the upper end of a pot cover (2); an electric heating wire (1005) is installed in the interlayer space between the protective sleeve (1001) and the pot cover (2); a switch key (1006) is fixedly mounted on the end of the protective sleeve (1001); the protective sleeve (1001) is sleeved on the middle part of the outer side of the spray device (6); and connecting members (1002) are fixedly mounted on both sides of the protective sleeve (1001); an electric push rod (1003) is connected to the connecting member (1002); and the bottom end of the electric push rod (1003) is movably connected to the fixing member (1004).

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