Liquid nitrogen cryotherapy pen capable of conveniently adjusting liquid nitrogen discharge amount

Abstract

The utility model relates to the technical field of dermatological nursing, and discloses a liquid nitrogen cryotherapy pen convenient to adjust liquid nitrogen discharge amount, which comprises a pen holder, a liquid nitrogen tank is arranged in the upper end of the pen holder, an adjusting device is arranged at the lower end of the liquid nitrogen tank of the pen holder, and the adjusting device comprises a liquid nitrogen transmission pipe. A sleeve is fixedly connected to the bottom of the liquid nitrogen conveying pipe, a rotary knob is rotationally connected to the left end of the sleeve, a screw rod is fixedly connected to the right end of the rotary knob, a plug is in threaded connection with the outer surface of the screw rod, a limiting cavity is formed in the middle of the plug, and the plug is located in the sleeve and is in sliding connection with the sleeve. According to the liquid nitrogen cryotherapy pen capable of conveniently adjusting the liquid nitrogen discharge amount, by rotating the rotary knob, the rotary knob drives the screw rod to rotate, the screw rod drives the plug to move horizontally, the limiting cavity of the plug and the conveying pipeline of the liquid nitrogen conveying pipe coincide, the size of the conveying pipeline is adjusted, and therefore the effects of conveniently and accurately controlling the liquid nitrogen discharge amount and improving the medical effect are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to dermatological nursing technical field, concretely is a liquid nitrogen cryotherapy pen convenient for adjusting liquid nitrogen discharge amount. BACKGROUND

[0002] Liquid nitrogen is widely used in treating skin diseases such as monkey bites and chicken eyes, and the treatment effect is good, but the storage and use of liquid nitrogen are not very convenient, and the liquid nitrogen is usually stored in a liquid nitrogen tank, and when needed, some liquid nitrogen is introduced into a thermos bottle from the tank for treatment, the boiling point of liquid nitrogen is -196 DEG C, and the volatility is relatively strong, so that more liquid nitrogen is lost during treatment, and medical staff usually use the method of winding medicine cotton on the tip of a cotton swab according to the size of the diseased area on the patient's skin, so that the size of the cotton swab head corresponds to the size of the diseased skin, and then dipping liquid nitrogen liquid for freezing.

[0003] According to the liquid nitrogen cryotherapy pen convenient for adjusting liquid nitrogen discharge amount disclosed by the Chinese patent publication No. CN 212281605 U, the existing liquid nitrogen cryotherapy pen convenient for adjusting liquid nitrogen discharge amount has the problem of complicated liquid nitrogen replacement steps, and professional staff is needed to complete the liquid nitrogen replacement work, the patent sets the liquid nitrogen storage tank at the inner top position of the equipment main body, the liquid nitrogen storage tank is fixedly connected with the equipment main body, and the liquid nitrogen storage tank can replace the liquid nitrogen more easily. However, the device uses the press blocks on the left end and the right end of the dosage adjusting mechanism to control the use amount of liquid nitrogen, the hand strength is unstable, and the pressing force fluctuates when pressing, which leads to uneven control of the liquid nitrogen output and affects the treatment.

[0004] Therefore, we propose a liquid nitrogen cryotherapy pen convenient for adjusting liquid nitrogen discharge amount to solve the problem that the above device cannot uniformly control the liquid nitrogen output and reduces the treatment effect. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a liquid nitrogen cryotherapy pen convenient for adjusting liquid nitrogen discharge amount to solve the problem that the above device cannot uniformly control the liquid nitrogen output and reduces the treatment effect in the above background technology.

[0006] In order to solve the above technical problem, the utility model provides the following technical scheme: a liquid nitrogen cryotherapy pen convenient for adjusting liquid nitrogen discharge amount, comprising a pen barrel, a liquid nitrogen tank is arranged in the upper end of the pen barrel, and an adjusting device is arranged at the lower end of the liquid nitrogen tank.

[0007] The adjusting device includes a liquid nitrogen transmission pipe, a sleeve is fixedly connected to the bottom of the liquid nitrogen transmission pipe, a knob is rotatably connected to the left end of the sleeve, a screw rod is fixedly connected to the right end of the knob, a plug is threadedly connected to the outer surface of the screw rod, a limiting cavity is arranged in the middle of the plug, the plug is located in the interior of the sleeve and is slidably connected with the sleeve, and a frozen contact is fixedly connected to the lower end of the liquid nitrogen transmission pipe.

[0008] Preferably, a support ring is fixedly connected to the inner side wall of the upper end of the pen barrel, a spring one is fixedly connected to the upper end of the support ring, a bottom plate is fixedly connected to the upper end of the spring one, and a cover plate is threadedly connected to the upper end of the pen barrel.

[0009] Preferably, the inner side wall of the cover plate and the inner side wall of the pen barrel are both filled with a heat insulation material, the lower end of the middle of the cover plate is provided with a protruding block, and a soft pad is fixedly connected to the lower end of the protruding block.

[0010] Preferably, the left end of the knob penetrates through the pen barrel and the left surface of the knob is marked with a scale, the limiting cavity in the middle of the plug coincides with the conveying pipeline of the liquid nitrogen transmission pipe, and sealing rings are fixedly connected to the outer surfaces of the two ends of the plug.

[0011] Preferably, a sliding block is rotatably connected to the left side of the knob, a sliding piece is slidably connected to the left end of the sliding block, a plug rod is fixedly connected to the right end of the sliding piece, a spring two is fixedly connected between the front end of the plug rod and the sliding block, the sliding block is slidably connected to the bottom of the left end of the pen barrel, a connecting head is slidably connected to the upper end of the liquid nitrogen transmission pipe, a spring three is fixedly connected between the connecting head and the liquid nitrogen transmission pipe, and the upper end of the connecting head is fixedly connected to the bottom of the liquid nitrogen tank.

[0012] Preferably, the rear end of the plug rod is provided with an inclined surface, and the plug rod is slidably connected with the sliding block.

[0013] Preferably, heat insulation baffles are fixedly connected to the upper and lower ends of the sliding block, the heat insulation baffles penetrate through the pen barrel and are slidably connected with the pen barrel.

[0014] Compared with the prior art, the present application has the following beneficial effects:

[0015] Firstly, the present application can conveniently and accurately control the amount of liquid nitrogen, and improve the medical effect by rotating the knob, driving the screw rod to rotate, driving the plug to translate, making the limiting cavity of the plug coincide with the conveying pipeline of the liquid nitrogen transmission pipe, and adjusting the size of the conveying channel.

[0016] Second, the utility model discloses, through the lower sliding block when using, and the sleeve is lowered with the knob drive sliding block, and the sleeve drive liquid nitrogen transmission pipe drops, makes the frozen contact expose pen holder, and the sliding movement between liquid nitrogen transmission pipe and connector produces, and spring three is stretched, when sliding block moves to pen holder bottom end, under the action of spring two, push the plug rod and insert into pen holder, and the sliding block is positioned, and then the liquid nitrogen transmission pipe is fixed, after using, the dial piece is dialled forward, and the plug rod is moved with the dial piece, and the sliding block is positioned, and under the action of spring three, liquid nitrogen transmission pipe resets, and the frozen contact contracts and enters pen holder inside, and the liquid nitrogen transmission pipe drives sliding block reset, thereby reach the effect of convenient contraction and frozen contact pop-out, strengthen the protection and avoid the pollution effect. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the structure three-dimensional schematic view of the utility model;

[0018] Figure 2 It is the structure three-dimensional sectional view schematic view of the utility model;

[0019] Figure 3 It is the structure of the utility model Figure 2 The enlarged schematic view of A part in it;

[0020] Figure 4 It is the structure of the utility model Figure 2 The enlarged schematic view of B part in it;

[0021] Figure 5 It is the structure connector three-dimensional sectional view schematic view of the utility model;

[0022] Figure 6 It is the structure sleeve sectional view schematic view of the utility model;

[0023] Figure 7 It is the structure sliding block side sectional view schematic view of the utility model.

[0024] Wherein: 1, pen holder;11, liquid nitrogen tank;12, support ring;13, spring one;14, bottom plate;15, cover plate;16, heat insulation material;2, adjusting device;201, liquid nitrogen transmission pipe;202, sleeve;203, knob;204, screw;205, plug;206, frozen contact;207, connector;208, spring three;301, sliding block;302, dial piece;303, plug rod;304, spring two;305, heat insulation baffle. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0026] The utility model provides the following technical scheme:

[0027] Embodiment one

[0028] Please refer to Figures 1-6 A liquid nitrogen refrigeration treatment pen convenient for adjusting the discharge amount of liquid nitrogen, comprising a pen barrel 1, a liquid nitrogen tank 11 is arranged in the upper end of the pen barrel 1, and an adjusting device 2 is arranged at the lower end of the liquid nitrogen tank 11;

[0029] The adjusting device 2 comprises a liquid nitrogen transmission pipe 201, the bottom of the liquid nitrogen transmission pipe 201 is fixedly connected with a sleeve 202, the left end of the sleeve 202 is rotatably connected with a knob 203, the right end of the knob 203 is fixedly connected with a screw rod 204, the outer surface of the screw rod 204 is threadedly connected with a plug 205, the middle of the plug 205 is provided with a limiting cavity, the plug 205 is arranged in the interior of the sleeve 202 and is slidably connected with the sleeve 202, and the lower end of the liquid nitrogen transmission pipe 201 is fixedly connected with a refrigeration contact 206.

[0030] Through the above technical scheme, the liquid nitrogen in the liquid nitrogen transmission pipe 201 is guided out and is conveyed to the refrigeration contact 206 through the liquid nitrogen transmission pipe 201, the hand-held refrigeration pen is used to smear the patient's wound for treatment, before use, the knob 203 is rotated, the knob 203 drives the screw rod 204 to rotate, the screw rod 204 drives the plug 205 to translate, the limiting cavity of the plug 205 is coincided with the conveying pipeline of the liquid nitrogen transmission pipe 201 and the size of the conveying channel is adjusted, so that the liquid nitrogen discharge amount is conveniently and accurately controlled, and the medical effect is improved.

[0031] Specifically, the upper end of the pen barrel 1 is fixedly connected with a supporting ring 12, the upper end of the supporting ring 12 is fixedly connected with a spring one 13, the upper end of the spring one 13 is fixedly connected with a bottom plate 14, and the upper end of the pen barrel 1 is threadedly connected with a cover plate 15.

[0032] Through the above technical scheme, the supporting ring 12 plays a limiting role, when being replaced, the cover plate 15 is screwed down, under the action of the spring one 13, the bottom plate 14 is pushed to move upwards, the bottom plate 14 pushes the liquid nitrogen tank 11 to pop out, so that the liquid nitrogen tank 11 is conveniently disassembled and assembled.

[0033] Specifically, the cover plate 15 and the inner side wall of the pen barrel 1 are filled with the heat insulation material 16, the lower end of the middle part of the cover plate 15 is provided with a protrusion, and the lower end of the protrusion is fixedly connected with a soft pad.

[0034] Through the above technical scheme, by filling the heat insulation material 16 in the cover plate 15 and the pen barrel 1, the heat insulation effect is strengthened, and the liquid nitrogen is prevented from being vaporized. By providing the protrusion at the lower end of the cover plate 15, the liquid nitrogen tank 11 is easily pressed downward during installation, and the spring 13 is retracted by the liquid nitrogen tank 11 pressing the bottom plate 14. The soft pad at the lower end of the cover plate 15 enhances the protection of the liquid nitrogen tank 11.

[0035] Specifically, the left end of the knob 203 penetrates the pen barrel 1 and the left surface is marked with a scale, the limiting cavity in the middle part of the plug 205 coincides with the delivery pipeline of the liquid nitrogen delivery pipe 201, and the outer surfaces of the two ends of the plug 205 are fixedly connected with sealing rings.

[0036] Through the above technical scheme, by penetrating the knob 203 through the pen barrel 1, the operator can easily rotate the knob 203. By providing a circular scale on the left end surface of the knob 203, the liquid nitrogen flow size can be easily observed and controlled. By providing sealing rings on the outer surfaces of the two ends of the plug 205, the sealing effect is enhanced.

[0037] Example two

[0038] Please refer to Figure 1 , Figure 2 , Figure 4 and Figure 7 , and on the basis of example one, further obtained: the left side of the knob 203 is rotatably connected with a sliding block 301, the left end of the sliding block 301 is slidably connected with a tab 302, the right end of the tab 302 is fixedly connected with a plug rod 303, the front end of the plug rod 303 and the sliding block 301 are fixedly connected with a spring 304, the sliding block 301 and the left end of the pen barrel 1 are slidably connected, the upper end of the liquid nitrogen delivery pipe 201 is slidably connected with a connector 207, the connector 207 and the liquid nitrogen delivery pipe 201 are fixedly connected with a spring 208, and the upper end of the connector 207 and the bottom of the liquid nitrogen tank 11 are fixedly connected.

[0039] Through the above technical scheme, by pressing down the sliding block 301 during use, the sliding block 301 drives the sleeve 202 to descend through the knob 203, the sleeve 202 drives the liquid nitrogen transmission pipe 201 to descend, the frozen contact 206 is exposed inside the pen barrel 1, the liquid nitrogen transmission pipe 201 and the connecting head 207 slide relative to each other, the spring three 208 is stretched, when the sliding block 301 moves to the bottom end of the pen barrel 1, the plug rod 303 is pushed into the pen barrel 1 under the action of the spring two 304, the sliding block 301 is limited, and then the liquid nitrogen transmission pipe 201 is fixed, after use, the push piece 302 is pushed forward, the plug rod 303 is driven to move, the limitation of the sliding block 301 is cancelled, the liquid nitrogen transmission pipe 201 is reset under the action of the spring three 208, the frozen contact 206 is retracted into the pen barrel 1, and the sliding block 301 is reset, so that the frozen contact 206 is conveniently retracted and popped out, and the protection effect is improved.

[0040] Specifically, the rear end of the plug rod 303 is provided with an inclined surface, and the plug rod 303 is slidably connected with the sliding block 301.

[0041] Through the above technical scheme, by setting the inclined surface on the rear end of the plug rod 303, the contact area with the pen barrel 1 is reduced during descent, and the friction is reduced.

[0042] Specifically, the upper and lower ends of the sliding block 301 are fixedly connected with heat insulation baffles 305, the heat insulation baffles 305 penetrate the pen barrel 1 and are slidably connected with the pen barrel 1.

[0043] Through the above technical scheme, by setting the heat insulation baffles 305 on the upper and lower ends of the sliding block 301, the heat insulation baffles 305 are inserted into the pen barrel 1, and the temperature insulation capacity of the pen barrel 1 is improved.

[0044] Although the specific embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these specific embodiments without departing from the principles and spirits, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A liquid nitrogen cryotherapy pen that is convenient for adjusting the amount of liquid nitrogen discharged, comprising a pen holder (1), wherein a liquid nitrogen tank (11) is provided inside the upper end of the pen holder (1), and characterized in that: The pen holder (1) is provided with an adjusting device (2) at the lower end thereof located in the liquid nitrogen tank (11); The regulating device (2) comprises a liquid nitrogen transmission tube (201), the bottom of the liquid nitrogen transmission tube (201) is fixedly connected to a sleeve (202), the left end of the sleeve (202) is rotatably connected to a knob (203), the right end of the knob (203) is fixedly connected to a screw (204), the outer surface of the screw (204) is threadedly connected to a plug (205), the middle part of the plug (205) is provided with a limiting cavity, the plug (205) is located inside the sleeve (202) and is slidably connected to the sleeve (202), and the lower end of the liquid nitrogen transmission tube (201) is fixedly connected to a freezing contact (206).

2. The liquid nitrogen cryotherapy pen that is easy to adjust the liquid nitrogen discharge amount according to claim 1, characterized in that: The inner side wall of the upper end of the pen holder (1) is fixedly connected to a support ring (12), the upper end of the support ring (12) is fixedly connected to a spring 1 (13), the upper end of the spring 1 (13) is fixedly connected to a bottom plate (14), and the upper end of the pen holder (1) is threadedly connected to a cover plate (15).

3. The liquid nitrogen cryotherapy pen capable of facilitating adjustment of liquid nitrogen discharge volume according to claim 2, characterized in that: The inner side walls of the cover plate (15) and the pen holder (1) are filled with heat insulating material (16), the middle portion of the lower end of the cover plate (15) is set as a convex block, and the cover plate (15) is fixedly connected to the lower end of the convex block with a soft pad.

4. The liquid nitrogen cryotherapy pen capable of facilitating adjustment of liquid nitrogen discharge volume according to claim 1, characterized in that: The left end of the knob (203) passes through the pen holder (1) and is marked with a scale on its left surface. The limiting cavity in the middle of the plug (205) coincides with the delivery pipe of the liquid nitrogen delivery pipe (201). The outer surfaces of both ends of the plug (205) are fixedly connected with sealing rings.

5. The liquid nitrogen cryotherapy pen capable of facilitating adjustment of liquid nitrogen discharge volume according to claim 1, characterized in that: The left side of the knob (203) is rotatably connected to a slider (301), the left end of the slider (301) is slidably connected to a paddle (302), the right end of the paddle (302) is fixedly connected to an insertion rod (303), a spring 2 (304) is fixedly connected between the front end of the insertion rod (303) and the slider (301), the slider (301) is slidably connected to the bottom of the left end of the pen body (1), the upper end of the liquid nitrogen transmission tube (201) is slidably connected to a connector (207), a spring 3 (208) is fixedly connected between the connector (207) and the liquid nitrogen transmission tube (201), and the upper end of the connector (207) is fixedly connected to the bottom of the liquid nitrogen tank (11).

6. The liquid nitrogen cryotherapy pen capable of facilitating adjustment of liquid nitrogen discharge volume according to claim 5, characterized in that: The rear end of the insertion rod (303) is provided with an inclined surface, and the insertion rod (303) is slidably connected to the slider (301).

7. The liquid nitrogen cryotherapy pen capable of adjusting the discharge amount of liquid nitrogen according to claim 5, characterized in that: The upper and lower ends of the slider (301) are both fixedly connected with heat insulation baffles (305), and the heat insulation baffles (305) pass through the pen holder (1) and are slidably connected to the pen holder (1).

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