CN111481286B - Wart body freezing device - Google Patents

Abstract

The invention discloses a wart freezing device, which comprises a handle, an outer rod, a connecting bin, a spray pipe and a launching device, wherein the bottom of the handle is provided with a liquid nitrogen storage bin, and liquid nitrogen is arranged in the liquid nitrogen storage bin; the inner part of the outer rod is a cavity, one end of the outer rod is connected to the handle and forms an L shape with the handle, the other end of the outer rod is closed, and the length of the outer rod can be adjusted; the connecting bin is arranged in the handle, one end of the connecting bin is communicated with the liquid nitrogen storage bin, and the other end of the connecting bin is communicated with the outer rod; the spray pipe is arranged in the outer rod, one end of the spray pipe is arranged at the closed end of the outer rod, and the other end of the spray pipe is communicated with the connecting bin; and the launching device is arranged on the handle, and can press the liquid nitrogen in the liquid nitrogen storage bin into the spray pipe after being pumped into the connecting bin and then be sprayed out from the spray pipe. The wart freezing device is convenient to use and can treat any part of a human body to be treated.

Description

Wart body freezing device

Technical Field

The invention relates to the field of medical appliances, in particular to a wart freezing device.

Background

Condyloma acuminata is a transmitted disease mainly represented by proliferative lesions in the anal, genital, and cervical regions caused by infection with Human Papillomavirus (HPV). Most occur in young and middle-aged people of 18-50 years old. Onset occurs after a latency period of approximately half a month to 8 months, averaging 3 months. The disease is common and easy to spread and spread, so timely treatment is necessary. There are many ways of treating condyloma acuminatum, and laser treatment, cryotherapy and the like are mainly adopted clinically at present. The traditional freezing treatment is that liquid nitrogen is sprayed to the skin of a patient from a nozzle through a liquid nitrogen bottle with the nozzle, although the treatment effect is good, the use is inconvenient, meanwhile, the nozzle is limited in length, any part can not be treated in the treatment process, meanwhile, the liquid nitrogen which is just sprayed out can extend into the human body for treatment, the visual field is limited, and meanwhile, the air around the nozzle forms fog due to the liquid nitrogen which is just sprayed out, and the sight of a doctor is further influenced.

Disclosure of Invention

In view of the above problems, the present invention provides a wart freezing device which can perform treatment under a visual condition and can conveniently treat any part in the anus and the cervix.

In order to achieve the purpose, the invention is realized by the following technical scheme: a wart freezing device comprising:

the bottom of the handle is provided with a liquid nitrogen storage bin, and liquid nitrogen is arranged in the liquid nitrogen storage bin;

the outer rod is connected to the handle and forms an L shape with the handle, a cavity is formed inside the outer rod, and the length of the outer rod can be adjusted;

the spraying device is arranged on the handle, and can continuously pump the liquid nitrogen in the liquid nitrogen storage bin into the spraying device, press the liquid nitrogen into the outer rod and spray the liquid nitrogen out of the end of the outer rod;

the camera device comprises a camera and a display, the camera is positioned at the closed end of the outer rod, the display is arranged on the handle, the camera is connected with the display through a data line, the data line penetrates through the outer rod and then is connected to the display, and the angle of the display can be adjusted; and

the negative pressure attracts the pipe, the negative pressure attracts the pipe setting in the outer pole, negative pressure attracts pipe one end for attracting the end, is provided with the connector on the other end, it sets up to attract the end the blind end of outer pole to communicate with the external world, the connector sets up on the outer pole, the connector can be connected with external negative pressure device.

Further, the spraying device comprises a connecting bin, a spraying pipe and a launching assembly, wherein the connecting bin is arranged in the handle, one end of the connecting bin is communicated with the liquid nitrogen storage bin, the other end of the connecting bin extends to the outer rod, the spraying pipe is arranged in the outer rod, one end of the spraying pipe is arranged at the end part, far away from the handle, of the outer rod, and the other end of the spraying pipe is communicated with the connecting bin;

the transmitting assembly comprises a rotating motor, a trigger, a transmission mechanism, a piston, a third elastic part, a first one-way valve and a second one-way valve, the rotating motor is positioned in the outer rod and close to one side of the handle, a positive plate and a negative plate are arranged on the rotating motor side by side, an installation bin is arranged on one side of the connection bin close to the handle, the third elastic part is arranged in the installation bin, the piston is arranged on the third elastic part and transversely inserted into the connection bin,

the transmission mechanism is arranged between the rotating motor and the piston, the rotating motor can drive the transmission mechanism to move so as to drive the piston to push and pull in the connecting bin, the first one-way valve is arranged in the connecting bin and close to the liquid nitrogen storage bin, the first one-way valve can seal a connecting port between the connecting bin and the liquid nitrogen storage bin, the second one-way valve is arranged in the spray pipe and close to the connecting bin, the second one-way valve can seal a connecting port between the spray pipe and the connecting bin, the middle part of the trigger is hinged with the handle, one end of the trigger is exposed out of the handle, the other end of the trigger penetrates into the handle, a metal connecting piece is arranged on the trigger, and the metal connecting piece can be simultaneously contacted with or disconnected with the positive plate and the negative plate by pressing the trigger.

Furthermore, the transmission mechanism comprises a driving wheel, a driven wheel, a cam and an extension rod, the driving wheel is arranged at the power output end of the rotating motor, the driven wheel is meshed with the driven wheel and can drive the driven wheel to rotate, the cam and the driven wheel are coaxially arranged, a sliding groove is transversely formed in one side, close to the handle, of the mounting bin, one end of the extension rod penetrates through the side wall of the piston and is connected with the piston, the other end of the extension rod abuts against the side wall of the cam, and the extension rod can drive the piston to move back and forth along the sliding groove.

Further, first check valve includes first elastic component and first ball sealer, the bottom mounting of first elastic component is in connect the storehouse, first ball sealer sets up the top of first elastic component, when first elastic component extension back, first ball sealer can seal connect the storehouse in with the connector between the liquid nitrogen storage storehouse.

Further, the second one-way valve comprises a second elastic part and a second sealing ball, the bottom end of the second elastic part is fixed in the spray pipe, the second sealing ball is arranged at the top end of the second elastic part, and when the second elastic part extends, the second sealing ball can seal a connecting port between the spray pipe and the connecting bin.

Furthermore, the handle is provided with a mounting bracket, the mounting bracket is provided with a ball groove, the display is provided with a connecting rod, the end part of the connecting rod is provided with a ball head, and the ball head is inserted into the ball groove and can rotate in the ball groove.

Further, the outer rod comprises a fixed rod and an adjusting rod, the fixed rod is connected with the handle, the adjusting rod is sleeved on the fixed rod and can slide on the fixed rod, the adjusting rod is perpendicular to the axial direction of the adjusting rod and is provided with a locking nut, and the locking nut is connected with the adjusting rod through threads.

Further, the outer wall of adjusting the pole is the toper, the segment of adjusting the pole is located keeps away from the handle end, the cover is equipped with disposable protective sheath on the regulation pole, the inner chamber size of disposable protective sheath with the outer wall looks adaptation of outer pole.

Furthermore, an injection port is arranged on the handle and communicates the liquid nitrogen storage bin with the outside, and the injection port can be closed automatically.

Further, the outer wall of the handle is provided with a soft pad.

The wart freezing device at least comprises the following advantages:

the wart freezing device comprises a handle, an outer rod, a connecting bin, a spray pipe and a launching device. The wart freezing device adopts a trigger type spraying mode, and is convenient and quick to use. The spray pipe is arranged on the outer rod, and the length of the outer rod can be adjusted. Therefore, the wart body in the deep anus and the cervix can be observed and frozen, and the sight of a doctor is not influenced, thereby meeting the treatment requirement.

Drawings

FIG. 1 is a schematic view showing the structure of a wart freezing device according to the present embodiment;

FIG. 2 is a schematic view of the first check valve of FIG. 1 in an open state and the second check valve in a closed state;

FIG. 3 is a schematic view of the display of FIG. 1 mounted;

reference numerals: 10-wart body freezing device, 100-handle, 110-liquid nitrogen storage bin, 120-bracket, 130-injection port, 200-outer rod, 210-fixing plate, 220-adjusting rod, 230-locking nut, 300-injection device, 310-spray pipe, 320-connecting bin, 321-mounting bin, 400-camera device, 410-camera, 420-display, 421-connecting rod, 422-bulb, 430-data line, 500-negative pressure device, 510-connecting head, 520-suction end, 600-emission component, 610-rotating motor, 620-trigger, 621-metal connecting sheet, 630-transmission mechanism, driving wheel, 632-driven wheel, 633-cam, 634-extension rod, 640-piston, piston, 650-third resilient element, 660-first one-way valve, 661-first resilient element, 662-first sealing ball, 670-second one-way valve, 671-second resilient element, 672-second sealing ball.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

Referring to fig. 1 to 3, a wartfreezing device 10 includes ahandle 100, anouter rod 200, aspraying device 300, acamera 400 and avacuum suction tube 500.

Specifically, a liquidnitrogen storage bin 110 is disposed at the bottom of thehandle 100. Liquid nitrogen is arranged in the liquidnitrogen storage bin 110. In the embodiment, the liquid nitrogen is low-temperature liquid nitrogen at the temperature of-196 ℃, and the liquid nitrogen at the temperature can freeze and damage the condyloma acuminatum instantly, so that the treatment effect is achieved. Theouter lever 200 is coupled to thehandle 100 and forms an L-shape with thehandle 100. The inner part of theouter rod 200 is a cavity, and the length of the wholeouter rod 200 can be adjusted. Thespraying device 300 is provided on thehandle 100. Theinjection device 300 can continuously pump the liquid nitrogen in the liquidnitrogen storage bin 110 into theinjection device 300, press the liquid nitrogen into thespray pipe 310, and finally spray the liquid nitrogen out of the end of theouter rod 200.

Thecamera device 400 includes acamera 410 and adisplay 420. Thecamera 410 is located at the closed end of theouter rod 200. Thedisplay 420 is provided on thehandle 100. Thecamera 410 is connected with thedisplay 420 through adata line 430. Thedata line 430 is connected to thedisplay 420 after passing through theouter rod 200. The angle of thedisplay 420 can be adjusted. Thereby meeting the observation requirements of different angles. The negativepressure suction tube 500 is disposed inside theouter rod 200. One end of thevacuum suction tube 500 is asuction end 520, and the other end is provided with aconnector 510. Thesuction end 520 is provided at the closed end of theouter lever 200 and communicates with the outside. Theconnector 510 is disposed on theouter rod 200, and theconnector 510 can be connected to an external negative pressure bottle. After theexternal rod 200 is adjusted to a proper length during the treatment process, theexternal rod 200 is inserted into the condyloma acuminatum under the guidance of thecamera 410, and the end part of theexternal rod 200 is close to the condyloma acuminatum. Then starting an external negative pressure device to suck foreign matters around the condyloma acuminatum, then starting theinjection device 300 to continuously inject liquid nitrogen on the condyloma acuminatum to freeze and drop tissues of the condyloma acuminatum, thereby achieving the purpose of treatment.

In the present embodiment, theinjection apparatus 400 includes anozzle 310, a connectingbin 320, and a firing assembly 600. Theconnection cartridge 320 is disposed in thehandle 100. One end of the connectingbin 320 is communicated with the liquidnitrogen storage bin 110, and the other end is communicated with theouter rod 200. Thenozzle 310 is disposed inside theouter rod 200, one end of thenozzle 310 is disposed at an end of theouter rod 200 far from thehandle 100, and the other end of thenozzle 310 is communicated with theconnection bin 320.

The firing assembly 600 includes arotary motor 610, atrigger 620, atransmission mechanism 630, apiston 640, a thirdresilient member 650, a first one-way valve 660, and a second one-way valve 670. Therotating motor 610 is located inside theouter lever 200 near thehandle 100 side. The rotatingelectric machine 610 is provided with a positive electrode tab and a negative electrode tab in parallel. The connectingchamber 320 is provided with a mountingchamber 321 at a side close to thehandle 100, and the thirdelastic member 650 is disposed in the mountingchamber 321. Thepiston 640 is disposed on the thirdelastic member 650 and is laterally inserted into theconnection cartridge 320.

Thetransmission mechanism 630 is disposed between the rotaryelectric machine 610 and thepiston 640. Therotating motor 610 can drive thetransmission mechanism 630 to move, so as to drive thepiston 640 to push and pull in the connectingbin 320. Thefirst check valve 660 is arranged in the connectingbin 320 and close to the liquidnitrogen storage bin 110, and thefirst check valve 660 can be hermetically connected with a connecting port between the inside of thebin 320 and the liquidnitrogen storage bin 110. Thesecond check valve 670 is disposed inside thenozzle 310 and adjacent to theconnection bin 320, and thesecond check valve 670 can seal the connection port of thenozzle 310 and theconnection bin 320. The middle of thetrigger 620 is hinged to thehandle 100, and one end of thetrigger 620 is exposed to thehandle 100 and the other end penetrates into thehandle 100. Ametal connecting piece 621 is provided on the end portion penetrating into thehandle 100. When thetrigger 620 is pressed to expose out of one end of the handle, themetal connecting piece 621 can be contacted with or disconnected from the positive plate and the negative plate simultaneously when the trigger rotates.

Thetransmission mechanism 630 includes adriving wheel 631, a drivenwheel 632, acam 633 and anextension bar 634. Thedriving wheel 631 is provided at a power output end of the rotatingelectric machine 610. The drivenwheel 632 is engaged with the drivenwheel 632 and can drive the drivenwheel 632 to rotate. Thecam 633 is disposed coaxially with the drivenwheel 632. A sliding groove 322 is transversely arranged on one side of the mountingbin 321 close to thehandle 100. Theextension rod 634 has one end connected to thepiston 640 after passing through the sliding groove 322, and the other end abutting against the side wall of thecam 633.Extension rod 634 can movepiston 640 back and forth along runner 622.

Thefirst check valve 660 includes a firstelastic member 661 and afirst sealing ball 662. The bottom end of the firstelastic member 661 is fixed in theconnection bin 320. Thefirst sealing ball 662 is disposed at the tip of the firstelastic member 661. When the firstelastic member 661 is extended, thefirst sealing ball 662 can seal the connection port between the inside of thecartridge 320 and the liquidnitrogen storage cartridge 110. Thesecond check valve 670 includes a secondelastomeric member 671 and asecond sealing ball 672. The bottom end of the secondelastic member 671 is fixed within thespout 310, and thesecond sealing ball 672 is disposed at the top end of the secondelastic member 671. When the secondelastic member 671 is extended, thesecond sealing ball 672 can seal the connection port between thenozzle 310 and theconnection chamber 320.

When liquid nitrogen needs to be sprayed, thetrigger 620 is pressed only in the direction close to thehandle 100, thetrigger 620 rotates, and themetal connecting piece 621 on the trigger is driven to be pressed on the positive pole piece and the negative pole piece of therotating motor 610, so that the positive pole piece and the negative pole piece are communicated, therotating motor 610 is started to rotate, and thedriving wheel 631, the drivenwheel 632 and thecam 633 are driven to rotate in sequence. When thecam 633 rotates, theextension rod 634 is pushed to reciprocate back and forth, and thepiston 640 reciprocates back and forth under the action of theextension rod 634 and the thirdelastic member 650, so as to change the volume inside theconnection chamber 320.

When thepiston 640 moves in a direction close to theconnection bin 320, the volume of theconnection bin 320 is reduced, at this time, under the pressure of liquid nitrogen in the liquidnitrogen storage bin 110, the firstelastic member 661 extends, thefirst sealing ball 662 closes the connection port between theconnection bin 320 and the liquidnitrogen storage bin 110, the secondelastic member 671 drives thesecond sealing ball 672 to contract, the connection port between thespray pipe 310 and theconnection bin 320 is opened, and the liquid nitrogen is pressed into thespray pipe 310 from the connection port between thespray pipe 310 and theconnection bin 320 and is sprayed out from the nozzle of thespray pipe 310. When thetrigger 620 is released, thepiston 640 moves away from theconnection chamber 320 by the third elastic member 650530, which results in the volume of theconnection chamber 320 becoming larger, and the secondelastic member 671 extends under the action of the external atmospheric pressure, while thesecond sealing ball 672 closes the connection port between thenozzle 310 and theconnection chamber 320, and the first one-way valve 660 moves toward theconnection chamber 320 by the action of the liquid nitrogen in the liquidnitrogen storage chamber 110, so that the connection port between theconnection chamber 320 and the liquidnitrogen storage chamber 110 is opened, and the liquid nitrogen is sucked into theconnection chamber 320. In this way, thetrigger 620 is pressed intermittently to spray liquid nitrogen onto condyloma acuminatum for treatment.

In this embodiment, thehandle 100 is provided with a mounting bracket. The mounting bracket is provided with a ball groove. Thedisplay 420 is provided with a connectingrod 421, and the end of the connectingrod 421 is provided with aball 422. Theball head 422 is inserted into the ball groove and can rotate in the ball groove. During use, the angle of thedisplay 420 can be adjusted as desired to be aligned with the operator for easy viewing.

Theouter pole 200 includes afixing pole 210 and anadjusting pole 220, thefixing pole 210 is connected with thehandle 100, and theadjusting pole 220 is sleeved on thefixing pole 210. The adjustinglever 220 is provided with a lockingnut 230 perpendicular to the axial direction of the adjustinglever 220. Thelock nut 230 is screw-coupled with theadjustment lever 220. When it is required to insert into the anus and cervix or other places requiring deep treatment, the lockingnut 230 is loosened, theadjustment rod 220 is pulled outward, theouter rod 200 is adjusted to a desired length, and then the lockingnut 230 is locked. In a specific application process, the length of theexternal rod 200 is about 7-10cm for treating condyloma acuminatum deep in anus, and the length of theexternal rod 200 is about 10-15cm for treating condyloma acuminatum in cervix.

In this embodiment, the outer wall of theadjustment lever 220 is tapered, and a small section of theadjustment lever 220 is located at the end away from thehandle 100. The adjustingrod 220 is sleeved with a disposable protective sleeve. The inner cavity of the disposable protective sleeve is sized to fit the outer wall of theouter rod 200. Of course, the disposable protective sheath can also be made of elastic material, such as silica gel material. The taper facilitates the sheathing of the disposable protective sheath over theadjustment rod 220, while the taper also facilitates the insertion of the entireouter rod 200 into the body. The disposable protective sleeve is disposable and is used for preventing cross infection.

In the present embodiment, theinlet 130 is provided in thehandle 100. Theinjection port 130 communicates the liquidnitrogen storage bin 110 with the outside, and theinjection port 130 can be closed by itself. When the liquid nitrogen in the liquidnitrogen storage bin 110 is used up, new liquid nitrogen may be injected through theinjection port 130. The outer wall of thehandle 100 is provided with a cushion. The soft pad has thermal-insulated heat preservation effect, can reduce the ice-cold of thehandheld handle 100 of operator, increases the comfort level of feeling simultaneously.

The method for using thewart freezing device 10 comprises the following steps:

during treatment, the length of theouter rod 200 is adjusted to a proper length according to the treatment position. Handle 100 is then held in place, andouter shaft 200 is inserted adjacent to the site to be treated, with the nozzle ofnozzle 310 aligned with the treatment site. During insertion, the status of insertion and condyloma acuminata can be grasped by viewing thedisplay 420. Then, theconnector 510 of the negativepressure suction tube 500 is connected with an external negative pressure device; then, thetrigger 620 is pressed in a direction close to thehandle 100, and the liquid nitrogen is sprayed from the nozzle of thenozzle 310 onto condyloma acuminatum, thereby achieving the purpose of treatment. In the treatment process, the negative pressure can pump away foreign matters around the condyloma acuminatum and the mist gas at the spray nozzle, so that the sight can be prevented from being interfered, and the treatment of the condyloma acuminatum can be facilitated. After treatment is completed, the disposable protective sleeve is removed for the next use. When the liquid nitrogen in the liquidnitrogen storage bin 110 is used up, new liquid nitrogen may be injected through theinjection port 130.

Thewart freezing device 10 includes ahandle 100, anouter rod 200, aspraying device 300, animaging device 400, and avacuum suction tube 500. Thewart freezing device 10 adopts atrigger 620 type continuous spraying mode, and is convenient and quick to use. Thenozzle 310 is arranged in theouter rod 200, and the length of theouter rod 200 can be adjusted, so that the treatment requirements in different positions, such as deep anus and cervix can be met. Thecamera device 400 is used to guide the insertion of theouter rod 200 and to observe the condition of condyloma acuminatum in treatment. The negativepressure suction tube 500 is used for pumping away foreign matters around the condyloma acuminatum, thereby being beneficial to the treatment of the condyloma acuminatum. Meanwhile, the negative pressure also pumps away the fog gas at the nozzle, so that the sight line is prevented from being interfered. When the liquid nitrogen in the liquidnitrogen storage bin 110 is used up, new liquid nitrogen may be injected through theinjection port 130. The soft pad has thermal-insulated heat preservation effect, can reduce the ice-cold of thehandheld handle 100 of operator, increases the comfort level of feeling simultaneously. The disposable protective sleeve is disposable and is used for preventing cross infection.

Finally, it should be noted that: while there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (9)

1. A wart freezing device, comprising:

the bottom of the handle is provided with a liquid nitrogen storage bin, and liquid nitrogen is arranged in the liquid nitrogen storage bin;

the outer rod is connected to the handle and forms an L shape with the handle, a cavity is formed inside the outer rod, and the length of the outer rod can be adjusted;

the spraying device is arranged on the handle, and can continuously pump the liquid nitrogen in the liquid nitrogen storage bin into the spraying device, press the liquid nitrogen into the outer rod and spray the liquid nitrogen out of the end of the outer rod;

the camera device comprises a camera and a display, the camera is positioned at the closed end of the outer rod, the display is arranged on the handle, the camera is connected with the display through a data line, the data line penetrates through the outer rod and then is connected to the display, and the angle of the display can be adjusted; and

the negative pressure suction tube is arranged in the outer rod, one end of the negative pressure suction tube is a suction end, the other end of the negative pressure suction tube is provided with a connector, the suction end is arranged at the closed end of the outer rod and is communicated with the outside, the connector is arranged on the outer rod, and the connector can be connected with an outside negative pressure device;

the spraying device comprises a connecting bin, a spraying pipe and a launching assembly, wherein the connecting bin is arranged in the handle, one end of the connecting bin is communicated with the liquid nitrogen storage bin, the other end of the connecting bin extends to the outer rod, the spraying pipe is arranged in the outer rod, one end of the spraying pipe is arranged at the end part, far away from the handle, of the outer rod, and the other end of the spraying pipe is communicated with the connecting bin;

the transmitting assembly comprises a rotating motor, a trigger, a transmission mechanism, a piston, a third elastic part, a first one-way valve and a second one-way valve, the rotating motor is positioned in the outer rod and close to one side of the handle, a positive plate and a negative plate are arranged on the rotating motor side by side, an installation bin is arranged on one side of the connection bin close to the handle, the third elastic part is arranged in the installation bin, the piston is arranged on the third elastic part and transversely inserted into the connection bin,

the transmission mechanism is arranged between the rotating motor and the piston, the rotating motor can drive the transmission mechanism to move so as to drive the piston to push and pull in the connecting bin, the first one-way valve is arranged in the connecting bin and close to the liquid nitrogen storage bin, the first one-way valve can seal a connecting port between the connecting bin and the liquid nitrogen storage bin, the second one-way valve is arranged in the spray pipe and close to the connecting bin, the second one-way valve can seal a connecting port between the spray pipe and the connecting bin, the middle part of the trigger is hinged with the handle, one end of the trigger is exposed out of the handle, the other end of the trigger penetrates into the handle, a metal connecting piece is arranged on the trigger, and the metal connecting piece can be simultaneously contacted with or disconnected with the positive plate and the negative plate by pressing the trigger.

2. The wart freezing device as claimed in claim 1, wherein the transmission mechanism comprises a driving wheel, a driven wheel, a cam and an extension rod, the driving wheel is arranged at the power output end of the rotating motor, the driven wheel is meshed with the driven wheel and can drive the driven wheel to rotate, the cam and the driven wheel are coaxially arranged, a sliding groove is transversely arranged on one side of the mounting bin close to the handle, one end of the extension rod penetrates through the sliding groove and is connected with the piston, the other end of the extension rod is abutted against the side wall of the cam, and the extension rod can drive the piston to move back and forth along the sliding groove.

3. The wart freezing device as claimed in claim 1, wherein the first one-way valve comprises a first elastic member and a first sealing ball, the bottom end of the first elastic member is fixed in the connecting bin, the first sealing ball is arranged at the top end of the first elastic member, and when the first elastic member is stretched, the first sealing ball can seal a connecting port between the connecting bin and the liquid nitrogen storage bin.

4. The wart freezing device as claimed in claim 1, wherein the second one-way valve comprises a second elastic member and a second sealing ball, the bottom end of the second elastic member is fixed in the nozzle tube, the second sealing ball is arranged at the top end of the second elastic member, and when the second elastic member is stretched, the second sealing ball can seal a connecting port between the nozzle tube and the connecting bin.

5. The wart freezing device as claimed in claim 1, wherein the handle is provided with a mounting bracket, the mounting bracket is provided with a ball groove, the display is provided with a connecting rod, and the end of the connecting rod is provided with a ball head which is inserted into the ball groove and can rotate in the ball groove.

6. The wart freezing device as claimed in claim 1, wherein the external rod comprises a fixing rod and an adjusting rod, the fixing rod is connected with the handle, the adjusting rod is sleeved on the fixing rod and can slide on the fixing rod, the adjusting rod is provided with a locking nut perpendicular to the axial direction of the adjusting rod, and the locking nut is in threaded connection with the adjusting rod.

7. The wart freezing device as claimed in claim 6, wherein the outer wall of the adjusting rod is conical, the small section of the adjusting rod is located far away from the handle end, a disposable protective sleeve is sleeved on the adjusting rod, and the size of the inner cavity of the disposable protective sleeve is matched with that of the outer wall of the outer rod.

8. The wart freezing device as claimed in claim 1, wherein the handle is provided with an injection port, the injection port connects the liquid nitrogen storage bin with the outside, and the injection port can be closed automatically.

9. The wart freezing device of claim 1, wherein the outer wall of the handle is provided with a cushion.

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