Disinfecting and cleaning auxiliary device for oral operation

Abstract

The invention relates to the technical field of medical instruments, in particular to an oral cavity operation disinfection and cleaning auxiliary device which is used for solving the problem that an existing device cannot meet the dual requirements for washing and sucking in an oral cavity operation at the same time. The pumping pipe is located in the middle of the joint of the adsorption pipe and the negative pressure pipe, and one-way valves are arranged on the adsorption pipe, the negative pressure pipe and the exhaust pipe; when the water pump rotates forwards, disinfectant in the box body is pumped through the liquid outlet pipe, the disinfectant is pumped to the spray head through the pumping pipe to be sprayed out, when the water pump rotates backwards, the negative pressure barrel is vacuumized through the negative pressure pipe, the negative pressure barrel transmits negative pressure to the spray head through the adsorption pipe, and air in the negative pressure barrel is exhausted through the exhaust pipe. According to the device, the cleaning mechanism pumps disinfectant to the spray head for flushing through forward rotation of the water pump, and the adsorption mechanism generates negative pressure through a negative pressure barrel and a negative pressure pipe through reverse rotation of the water pump, so that blood and other liquid in the oral cavity is sucked into the negative pressure barrel.

Description

Technical Field

[0001] The present invention relates to the technical field of medical instruments, and in particular to an oral surgery disinfection and cleaning auxiliary device. Background Art

[0002] During oral surgery, it is crucial to ensure the cleanliness and disinfection of the surgical area, which is directly related to the success rate of the surgery and the patient's postoperative recovery. Traditional oral surgery disinfection and cleaning methods often rely on manual operations by medical staff, such as using disinfectant to rinse the mouth and using a straw to suck out blood in the mouth. However, this method is not only inefficient, but also increases the workload of medical staff. It may also lead to incomplete cleaning or the risk of cross infection due to improper operation.

[0003] In order to solve the above problems, some oral surgery disinfection and cleaning auxiliary devices have appeared on the market, which have improved the cleaning efficiency and safety of the surgery to a certain extent. However, most of the existing auxiliary devices have single functions, either only having a flushing function or only having a suction function, and cannot meet the dual needs of flushing and suction in oral surgery at the same time. Summary of the invention

[0004] The invention provides an oral surgery disinfection and cleaning auxiliary device to solve the problem that the existing device cannot simultaneously meet the dual requirements of flushing and suction in oral surgery.

[0005] In order to alleviate the above technical problems, the technical solution provided by the present invention is:

[0006] An oral surgery disinfection and cleaning auxiliary device comprises a cleaning mechanism and an adsorption mechanism, wherein the cleaning mechanism comprises a box body with a built-in disinfectant, the box body is connected to a liquid outlet pipe, the liquid outlet pipe is connected to a water pump, the water pump is connected to a pumping pipe, and the end of the pumping pipe is connected to a nozzle;

[0007] The adsorption mechanism comprises a negative pressure cylinder, the negative pressure cylinder is connected with a negative pressure pipe and an adsorption pipe, the negative pressure pipe and the adsorption pipe are both connected with the pumping pipe, and the liquid outlet pipe is connected with an exhaust pipe;

[0008] When the water pump rotates forward, the disinfectant is pumped to the nozzle through the pumping pipe for spraying. When the water pump rotates reversely, the negative pressure cylinder is vacuumed. The negative pressure cylinder transmits negative pressure to the nozzle, and the exhaust pipe discharges the air in the negative pressure cylinder.

[0009] Furthermore, a one-way valve is arranged on the pumping pipe at the middle of the connection between the adsorption pipe and the negative pressure pipe, on the adsorption pipe, on the negative pressure pipe and on the exhaust pipe;

[0010] A one-way valve is provided on the liquid outlet pipe at a portion between the exhaust pipe and the box body.

[0011] Furthermore, the nozzle includes an inner cylinder and an outer cylinder, the inner cylinder is connected to the pumping pipe, the outer cylinder is slidably sleeved on the inner cylinder, the outer wall of the inner cylinder is connected to a limit ring, and a pressure-sensitive switch for controlling the forward and reverse rotation of the water pump is provided on the side of the limit ring facing the outer cylinder, when the outer cylinder approaches the limit ring, it abuts against the pressure-sensitive switch to reverse the water pump, and when the outer cylinder is away from the limit ring, the water pump rotates forward.

[0012] Furthermore, the nozzle also includes four arc blocks, the inner wall of the outer cylinder is provided with a cavity cooperating with the four arc blocks, the four arc blocks can approach or move away from each other synchronously, and, when approaching each other, the four arc blocks form a circular ring, and the inner wall of the circular ring has a taper to form a conical hole, and the large diameter end of the conical hole faces the inner cylinder.

[0013] Furthermore, the nozzle also includes a piston rod connected to the limiting ring, the end of the piston rod is connected to a piston plate, a piston cavity is opened in the side wall of the outer cylinder, the piston plate slides in the piston cavity, a flow channel is opened in the side wall of the outer cylinder, the flow channel is connected to the cavity and the space in the piston cavity where the piston plate faces the piston rod, when the piston plate slides in the piston cavity, air is injected or extracted into the cavity through the flow channel, so that the four arc blocks are synchronously approached or moved away.

[0014] Furthermore, a first pressure-stabilizing hole is provided on the outer wall of the outer cylinder, and the first pressure-stabilizing hole is connected to the space in the piston cavity from the piston plate toward the cavity.

[0015] Furthermore, it also includes a self-cleaning mechanism, which includes a slide cylinder, the inner wall of the slide cylinder is in contact with the side wall of the limiting ring, and disinfectant is stored in a space in the slide cylinder on the side of the limiting ring away from the piston rod. When the outer cylinder slides in a direction away from the inner cylinder, the disinfectant in the slide cylinder space is released into the part of the pumping tube between the adsorption tube and the nozzle, so that the adsorbed substance in the pumping tube is discharged.

[0016] Furthermore, the self-cleaning mechanism also includes an extraction pipe and a discharge pipe, and both the extraction pipe and the discharge pipe are provided with a one-way valve, the portion between the water pump on the pumping pipe and the one-way valve on the pumping pipe is connected to the space inside the slide cylinder through the extraction pipe, and the portion between the nozzle on the pumping pipe and the one-way valve on the pumping pipe is connected to the space inside the slide cylinder through the discharge pipe.

[0017] Furthermore, a second pressure-stabilizing hole is provided on the side wall of the slide cylinder, and the second pressure-stabilizing hole is connected to a space on one side of the slide cylinder and close to the piston rod on the limiting ring.

[0018] Furthermore, a portion of the pumping pipe between the water pump and the one-way valve on the pumping pipe is connected to a liquid storage bag.

[0019] The beneficial effects of the present invention are analyzed as follows:

[0020] An oral surgery disinfection and cleaning auxiliary device comprises a cleaning mechanism and an adsorption mechanism, wherein the cleaning mechanism comprises a box body with built-in disinfectant, the box body is connected with a liquid outlet pipe, the liquid outlet pipe is connected with a water pump, the water pump is connected with a pumping pipe, and the end of the pumping pipe is connected with a nozzle; the adsorption mechanism comprises a negative pressure cylinder, the negative pressure cylinder is connected with a negative pressure pipe and an adsorption pipe, both the negative pressure pipe and the adsorption pipe are connected with the pumping pipe, and the liquid outlet pipe is connected with an exhaust pipe; a check valve is arranged on the pumping pipe at the middle of the connection between the adsorption pipe and the negative pressure pipe, on the adsorption pipe, on the negative pressure pipe and on the exhaust pipe; when the water pump rotates forward, the disinfectant in the box body is extracted through the liquid outlet pipe, and the disinfectant is pumped to the nozzle for spraying through the pumping pipe; and when the water pump rotates reversely, the negative pressure cylinder is vacuumed through the negative pressure pipe, the negative pressure cylinder transmits negative pressure to the nozzle through the adsorption pipe, and the exhaust pipe discharges air in the negative pressure cylinder.

[0021] During use, if it is necessary to rinse the patient's mouth, the water pump is controlled to rotate forward. At this time, the one-way valve on the negative pressure pipe prevents the disinfectant from flowing into the negative pressure pipe. The water pump draws the disinfectant in the box through the outlet pipe, and then pumps it to the nozzle through the pumping pipe to spray it out to rinse and disinfect the patient's mouth. If it is necessary to absorb blood and other liquids from the patient's mouth, the water pump is controlled to rotate reversely. The one-way valve on the pumping pipe prevents blood and other liquids from entering the box through the pumping pipe and the outlet pipe, keeping the disinfectant in the box from being contaminated. The water pump is reversed. The generated negative pressure is transmitted to the negative pressure cylinder through the negative pressure tube, and the negative pressure cylinder transmits the negative pressure to the nozzle through the adsorption tube and the pumping tube. At this time, the opening of the nozzle is close to the part to be cleaned, so that the blood and water in the mouth can be sucked into the negative pressure cylinder. The connecting part between the negative pressure tube and the negative pressure cylinder is located at the upper part of the negative pressure cylinder, thereby preventing the blood and water in the negative pressure cylinder from flowing into the negative pressure tube. The air discharged when the negative pressure cylinder draws negative pressure is discharged through the exhaust pipe, so that only one device is needed to complete the flushing of the patient's mouth and the absorption of blood and water. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the related technologies, the drawings required for use in the specific embodiments or the related technical descriptions will be briefly introduced below. Obviously, the drawings described below are 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.

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a fluid flow diagram when the water pump of the present invention rotates forward;

[0025] Figure 3 It is a fluid flow diagram when the water pump of the present invention is reversed;

[0026] Figure 4 It is a structural schematic diagram of the nozzle of the present invention;

[0027] Figure 5 It is a structural schematic diagram of the arc block of the present invention;

[0028] Figure 6 It is a structural schematic diagram of the self-cleaning mechanism of the present invention.

[0029] icon:

[0030] 100, cleaning mechanism; 110, housing; 120, water pump; 130, liquid outlet pipe; 140, pumping pipe; 200, adsorption mechanism; 210, negative pressure cylinder; 220, adsorption tube; 230, negative pressure tube; 240, exhaust pipe; 300, nozzle; 310, inner cylinder; 320, outer cylinder; 330, arc block; 331, cavity; 340, limiting ring; 350, piston rod; 360, piston plate; 370, piston cavity; 371, flow channel; 372, first pressure-stabilizing hole; 400, self-cleaning mechanism; 410, slide cylinder; 411, second pressure-stabilizing hole; 420, extraction tube; 430, discharge tube; 440, liquid storage capsule. DETAILED DESCRIPTION

[0031] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Example

[0035] like Figure 1-Figure 6 As shown, an oral surgery disinfection and cleaning auxiliary device includes a cleaning mechanism 100 and an adsorption mechanism 200. The cleaning mechanism 100 includes a box 110 with a built-in disinfectant, the box 110 is connected to a liquid outlet pipe 130, the liquid outlet pipe 130 is connected to a water pump 120, the water pump 120 is connected to a pumping pipe 140, and the end of the pumping pipe 140 is connected to a nozzle 300; the adsorption mechanism 200 includes a negative pressure cylinder 210, the negative pressure cylinder 210 is connected to a negative pressure pipe 230 and an adsorption pipe 220, the negative pressure pipe 230 and the adsorption pipe 220 are both connected to the pumping pipe 140, the liquid outlet pipe 130 is connected to the water pump 120, and the water pump 120 is connected to a pumping pipe 140. The end of the pumping pipe 140 is connected to a nozzle 300; An exhaust pipe 240 is provided; a one-way valve is provided on the pumping pipe 140 at the middle part of the connection between the adsorption pipe 220 and the negative pressure pipe 230, on the adsorption pipe 220, on the negative pressure pipe 230 and on the exhaust pipe 240; when the water pump 120 rotates forward, the disinfectant in the box body 110 is extracted through the liquid outlet pipe 130, and the disinfectant is pumped to the nozzle 300 for spraying through the pumping pipe 140; and, when the water pump 120 is reversed, the negative pressure cylinder 210 is vacuumed through the negative pressure pipe 230, the negative pressure cylinder 210 transmits negative pressure to the nozzle 300 through the adsorption pipe 220, and the exhaust pipe 240 discharges the air in the negative pressure cylinder 210.

[0036] The working mechanism of the oral surgery disinfection and cleaning auxiliary device provided in this embodiment is as follows:

[0037] During use, if it is necessary to rinse the patient's mouth, the water pump 120 is controlled to rotate forward. At this time, the one-way valve on the negative pressure pipe 230 prevents the disinfectant from flowing into the negative pressure pipe 230. The water pump 120 extracts the disinfectant in the box 110 through the liquid outlet pipe 130, and then pumps it to the nozzle 300 through the pumping pipe 140 to spray it out to rinse and disinfect the patient's mouth. If it is necessary to absorb liquids such as blood and water in the patient's mouth, the water pump 120 is controlled to rotate in the reverse direction. The one-way valve on the pumping pipe 140 prevents liquids such as blood and water from entering the box 110 through the pumping pipe 140 and the liquid outlet pipe 130, so as to keep the disinfectant in the box 110 from being contaminated. The water pump 120 is reversed. The generated negative pressure is transmitted to the negative pressure cylinder 210 through the negative pressure tube 230, and the negative pressure cylinder 210 transmits the negative pressure to the nozzle 300 through the adsorption tube 220 and the pumping tube 140. At this time, the opening of the nozzle 300 is close to the part to be cleaned, so that the blood and water in the mouth can be sucked into the negative pressure cylinder 210. The connecting part between the negative pressure tube 230 and the negative pressure cylinder 210 is located at the upper part of the negative pressure cylinder 210, thereby preventing the blood and water in the negative pressure cylinder 210 from flowing into the negative pressure tube 230. The air discharged when the negative pressure cylinder 210 draws negative pressure is discharged through the exhaust pipe 240, so that only one device is needed to complete the flushing of the patient's mouth and the absorption of blood and water.

[0038] Among the optional methods of this embodiment, the more preferred ones are:

[0039] A one-way valve is provided on the liquid outlet pipe 130 between the exhaust pipe 240 and the housing 110 .

[0040] By setting a one-way valve on the liquid outlet pipe 130, the disinfectant in the box 110 can only flow out through the liquid outlet pipe 130 and the air in the negative pressure cylinder 210 will not enter the box 110 to cause pollution. A box cover or a pipe can be set on the box 110 to facilitate the replenishment of disinfectant into the box 110.

[0041] Regarding the structure of the nozzle 300, specifically:

[0042] The nozzle 300 includes an inner cylinder 310 and an outer cylinder 320, the inner cylinder 310 is connected to the pumping pipe 140, the outer cylinder 320 is slidably sleeved on the inner cylinder 310, the outer wall of the inner cylinder 310 is connected to the limit ring 340, and a pressure-sensitive switch for controlling the forward and reverse rotation of the water pump 120 is arranged on the side of the limit ring 340 facing the outer cylinder 320, when the outer cylinder 320 approaches the limit ring 340, it abuts against the pressure-sensitive switch to make the water pump 120 reverse, and when the outer cylinder 320 is away from the limit ring 340, the water pump 120 rotates forward; the nozzle 300 also includes four arc blocks 330, the inner wall of the outer cylinder 320 is provided with a cavity 331 that cooperates with the four arc blocks 330, the four arc blocks 330 can approach or move away from each other synchronously, and when the four arc blocks 330 approach each other The block 330 forms a circular ring, and the inner wall of the circular ring has a taper to form a tapered hole, and the large diameter end of the tapered hole faces the inner cylinder 310; the nozzle 300 also includes a piston rod 350 connected to the limit ring 340, and the end of the piston rod 350 is connected to the piston plate 360. A piston cavity 370 is opened in the side wall of the outer cylinder 320, and the piston plate 360 ​​slides in the piston cavity 370. A flow channel 371 is opened in the side wall of the outer cylinder 320, and the flow channel 371 is connected to the cavity 331 and the space in the piston cavity 370 where the piston plate 360 ​​faces the piston rod 350. When the piston plate 360 ​​slides in the piston cavity 370, air is injected or extracted into the cavity 331 through the flow channel 371, so that the four arc blocks 330 are synchronously approached or moved away.

[0043] The water pump 120 is turned on or off by a separate master switch. When the outer cylinder 320 is pulled away from the inner cylinder 310 to slide, the pressure-sensitive switch is not squeezed. At this time, the master switch of the water pump 120 is turned on to make the water pump 120 run. At this time, the water pump 120 rotates forward, and the nozzle 300 sprays disinfectant. Moreover, when the outer cylinder 320 slides away from the inner cylinder 310, the piston plate 360 ​​slides relative to the piston cavity 370, so that the air in the piston cavity 370 is conducted to the cavity 331, so that the air pressure in the cavity 331 increases and pushes the four arc blocks 330 to move closer to each other by one stroke. Ring, and the inner diameter of the tapered hole in the middle of the ring is smaller, so that the pressure of the disinfectant sprayed out of the nozzle 300 can be increased without changing the pumping speed of the water pump 120, and then the water pump 120 can select a fixed power, and there is no need to install a speed regulator. On the contrary, when the outer cylinder 320 is pushed to slide close to the inner cylinder 310, the pressure-sensitive switch is squeezed, and the water pump 120 is reversed, so that negative pressure can be generated at the nozzle 300. At the same time, the four arc blocks 330 are away from each other, so that the inner diameter of the outer cylinder 320 is increased, thereby alleviating the situation where the solid debris in the blood water blocks the nozzle 300;

[0044] It should be noted here that the water pump 120 is a pump that can be operated in both forward and reverse directions, such as a gear pump.

[0045] Among the optional methods of this embodiment, the more preferred ones are:

[0046] A first pressure-stabilizing hole 372 is formed on the outer wall of the outer cylinder 320 . The first pressure-stabilizing hole 372 is connected to a space in the piston chamber 370 from the piston plate 360 ​​toward the cavity 331 .

[0047] The provision of the first pressure-stabilizing hole 372 enables the piston plate 360 ​​to slide in the piston chamber 370 without being affected by the gas pressure in the piston chamber 370 .

[0048] Regarding the structure of the self-cleaning mechanism 400, specifically:

[0049] The self-cleaning mechanism 400 includes a slide 410 connected to the outer cylinder 320, the inner wall of the slide 410 is in contact with the side wall of the limiting ring 340, and a disinfectant is stored in the slide 410 on the side of the limiting ring 340 away from the piston rod 350. When the outer cylinder 320 slides in a direction away from the inner cylinder 310, the disinfectant in the slide 410 space is released to the part between the adsorption tube 220 and the nozzle 300 in the pumping tube 140, so that the adsorption tube 220 in the pumping tube 140 is The attached objects are discharged; the self-cleaning mechanism 400 also includes an extraction pipe 420 and a discharge pipe 430, both of which are provided with a one-way valve, the portion located between the water pump 120 on the pumping pipe 140 and the one-way valve on the pumping pipe 140 is connected to the space inside the slide 410 through the extraction pipe 420, and the portion located between the nozzle 300 on the pumping pipe 140 and the one-way valve on the pumping pipe 140 is connected to the space inside the slide 410 through the discharge pipe 430.

[0050] When the nozzle 300 is converted from the state of spraying disinfectant to the state of negative pressure adsorption, the outer cylinder 320 slides toward the inner cylinder 310. At this time, a closed space is formed between the slide cylinder 410 and the limit ring 340. Negative pressure is generated during the formation of this closed space. The negative pressure causes the disinfectant remaining in the pumping tube 140 to be extracted and stored through the extraction tube 420. Therefore, when the nozzle 300 is subsequently converted from the state of negative pressure adsorption to the state of spraying disinfectant, the outer cylinder 320 slides away from the inner cylinder 310. At this time, the previously retained disinfectant is discharged into the pumping tube 140 through the discharge tube 430 and flows out in the direction section of the one-way valve on the pumping tube 140 toward the nozzle 300, so that the residual adsorbent in the pumping tube 140 is discharged, preventing the previous blood and other liquids from being sprayed into the patient's mouth when rinsing the patient's mouth;

[0051] It should be noted here that first, the main switch of the water pump 120 is turned off, and then the outer cylinder 320 is controlled to move away from the inner cylinder 310 until the pressure-sensitive switch is just not pressurized. Then, after the negative pressure in the negative pressure cylinder 210 is released, the outer cylinder 320 is continued to be controlled to slide to the position farthest from the inner cylinder 310.

[0052] Among the optional methods of this embodiment, the more preferred ones are:

[0053] A second pressure-stabilizing hole 411 is formed on the side wall of the slide cylinder 410 . The second pressure-stabilizing hole 411 is connected to a space on one side of the slide cylinder 410 located on the limiting ring 340 and close to the piston rod 350 .

[0054] The provision of the second pressure-stabilizing hole 411 reduces the air resistance encountered by the slide cylinder 410 when it slides.

[0055] Among the optional methods of this embodiment, the more preferred ones are:

[0056] The portion of the pumping tube 140 between the water pump 120 and the one-way valve on the pumping tube 140 is in communication with a liquid storage bag 440 .

[0057] The arrangement of the liquid storage bag 440 enables sufficient disinfectant to be stored in the extraction tube 420 .

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An oral surgery disinfection and cleaning auxiliary device, characterized in that: The invention comprises a cleaning mechanism (100) and an adsorption mechanism (200), wherein the cleaning mechanism (100) comprises a box (110) containing a disinfectant, the box (110) is connected to a liquid outlet pipe (130), the liquid outlet pipe (130) is connected to a water pump (120), the water pump (120) is connected to a pumping pipe (140), and the end of the pumping pipe (140) is connected to a nozzle (300); The adsorption mechanism (200) comprises a negative pressure cylinder (210), the negative pressure cylinder (210) is connected to a negative pressure tube (230) and an adsorption tube (220), the negative pressure tube (230) and the adsorption tube (220) are both connected to the pumping tube (140), and the liquid outlet tube (130) is connected to an exhaust pipe (240); When the water pump (120) rotates forward, the disinfectant is pumped to the nozzle (300) through the pumping pipe (140) for spraying; and when the water pump (120) rotates reversely, the negative pressure cylinder (210) is evacuated, the negative pressure cylinder (210) transmits negative pressure to the nozzle (300), and the exhaust pipe (240) discharges the air in the negative pressure cylinder (210).

2. The oral surgery disinfection and cleaning auxiliary device according to claim 1, characterized in that: A one-way valve is provided on the pumping pipe (140) at the middle of the connection between the adsorption pipe (220) and the negative pressure pipe (230), the adsorption pipe (220), the negative pressure pipe (230), and the exhaust pipe (240); A one-way valve is provided on the liquid outlet pipe (130) at a portion between the exhaust pipe (240) and the box body (110).

3. The oral surgery disinfection and cleaning auxiliary device according to claim 2, characterized in that: The nozzle (300) comprises an inner cylinder (310) and an outer cylinder (320), wherein the inner cylinder (310) is connected to the pumping pipe (140), and the outer cylinder (320) is slidably sleeved on the inner cylinder (310), and the outer wall of the inner cylinder (310) is connected to a limit ring (340), and a pressure-sensitive switch for controlling the forward and reverse rotation of the water pump (120) is arranged on a surface of the limit ring (340) facing the outer cylinder (320), and when the outer cylinder (320) approaches the limit ring (340), it abuts against the pressure-sensitive switch to make the water pump (120) reverse, and when the outer cylinder (320) is away from the limit ring (340), the water pump (120) rotates forward.

4. The oral surgery disinfection and cleaning auxiliary device according to claim 3, characterized in that: The nozzle (300) further comprises four arc blocks (330), the inner wall of the outer cylinder (320) is provided with a cavity (331) cooperating with the four arc blocks (330), the four arc blocks (330) can be synchronously moved closer to or farther from each other, and when approaching each other, the four arc blocks (330) form a circular ring, and the inner wall of the circular ring has a taper to form a conical hole, and the large diameter end of the conical hole faces the inner cylinder (310).

5. The oral surgery disinfection and cleaning auxiliary device according to claim 4, characterized in that: The spray head (300) further comprises a piston rod (350) connected to the limiting ring (340), the end of the piston rod (350) being connected to a piston plate (360), a piston cavity (370) being provided in the side wall of the outer cylinder (320), the piston plate (360) sliding in the piston cavity (370), a flow channel (371) being provided in the side wall of the outer cylinder (320), the flow channel (371) being connected to the cavity (331) and a space in the piston cavity (370) where the piston plate (360) faces the piston rod (350), and when the piston plate (360) slides in the piston cavity (370), air is injected or extracted into the cavity (331) through the flow channel (371), so that the four arc blocks (330) are synchronously approached or moved away from each other.

6. The oral surgery disinfection and cleaning auxiliary device according to claim 5, characterized in that: A first pressure-stabilizing hole (372) is provided on the outer wall of the outer cylinder (320), and the first pressure-stabilizing hole (372) is connected to the space in the piston chamber (370) from the piston plate (360) toward the cavity (331).

7. The oral surgery disinfection and cleaning auxiliary device according to claim 6, characterized in that: The invention also includes a self-cleaning mechanism (400), wherein the self-cleaning mechanism (400) includes a slide cylinder (410), the inner wall of the slide cylinder (410) is in contact with the side wall of the limiting ring (340), and a disinfectant is stored in a space in the slide cylinder (410) on a side of the limiting ring (340) away from the piston rod (350). When the outer cylinder (320) slides in a direction away from the inner cylinder (310), the disinfectant in the space of the slide cylinder (410) is released into the part of the pumping tube (140) between the adsorption tube (220) and the nozzle (300), so that the adsorbed substance in the pumping tube (140) is discharged.

8. The oral surgery disinfection and cleaning auxiliary device according to claim 7, characterized in that: The self-cleaning mechanism (400) further includes an extraction pipe (420) and a discharge pipe (430), each of which is provided with a one-way valve. The portion between the water pump (120) on the pumping pipe (140) and the one-way valve on the pumping pipe (140) is connected to the space inside the slide cylinder (410) via the extraction pipe (420), and the portion between the nozzle (300) on the pumping pipe (140) and the one-way valve on the pumping pipe (140) is connected to the space inside the slide cylinder (410) via the discharge pipe (430).

9. The oral surgery disinfection and cleaning auxiliary device according to claim 8, characterized in that: A second pressure-stabilizing hole (411) is provided on the side wall of the slide cylinder (410), and the second pressure-stabilizing hole (411) is connected to a space on one side of the slide cylinder (410) and close to the piston rod (350) on the limiting ring (340).

10. The oral surgery disinfection and cleaning auxiliary device according to claim 9, characterized in that: The portion of the pumping pipe (140) between the water pump (120) and the one-way valve on the pumping pipe (140) is in communication with a liquid storage bag (440).

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