Oral suction integrated flusher

Abstract

The application provides a mouth suction integrated flusher, which comprises a hand-held part and a catheter part connected to the hand-held part; the hand-held part comprises a liquid storage container, a liquid suction container and an electromechanical part, and the liquid storage container, the liquid suction container and the electromechanical part cooperatively define the shape contour of the hand-held part; the electromechanical part comprises a pump and a driving motor thereof, and one port of the pump is communicated with a pipeline connected to the liquid storage container or the liquid suction container through a switching mechanism, and the other port is communicated with the catheter part, so that when the pump is operated, the liquid in the liquid storage container is suitable to be sprayed out through the catheter part or the external liquid is suitable to be sucked into the liquid suction container.

Description

Technical Field

[0001] This invention relates to the field of oral irrigation equipment technology, and specifically to an integrated oral suction irrigation device. Background Technology

[0002] In oral irrigation equipment, the oral irrigator is an auxiliary rinsing tool for cleaning the oral cavity. It is a tool that uses the impact of water flow to clean the oral cavity. Irrigators also play an important role in the treatment of oral diseases, such as the treatment of jaw cysts. Jaw cysts refer to the appearance of cystic masses containing fluid in the jawbone, which gradually enlarge and eventually rupture through the jawbone. According to the cause of the disease, they can be divided into two main categories: dental and non-dental.

[0003] Jawbone cysts can be treated with jawbone cyst fenestration surgery. After jawbone cyst fenestration surgery, the surgical wound needs to be irrigated with an irrigator. After irrigating larger or deeper defect cavities, the irrigating fluid or other fluids in the defect cavity are easy to remain in the defect cavity. If they cannot be drained smoothly, the defect cavity is easily soaked in fluid for a long time, causing secondary damage. Similar problems also occur in treatments such as oral surgery tumor surgery. After irrigating the wound, it is not easy to drain the irrigating fluid in the wound or defect cavity.

[0004] Existing irrigation and aspiration devices fall into two categories: one type involves connecting an external inlet and a negative pressure line to a handheld device to irrigate the wound and aspirate the irrigation fluid, which requires sophisticated equipment and a fixed treatment location; the other type uses a syringe-like method for irrigation and aspiration, but this type requires one hand to hold the device body and the other to operate the push rod, resulting in low operational precision and poor stability. Summary of the Invention

[0005] In view of the problems in the prior art, the present invention provides an integrated oral suction irrigator, which includes a handheld component and a tubing component, the tubing component being connected to the handheld component; the handheld component includes a liquid storage container, a suction container, and an electromechanical component, the liquid storage container, the suction container, and the electromechanical component cooperating to define the external outline of the handheld component; the electromechanical component includes a pump and its drive motor, and a switching mechanism connects one port of the pump to a pipeline connected to the liquid storage container or the suction container, and the other port to the tubing component, thereby adapting the pump to spray liquid from the liquid storage container or draw external liquid into the suction container when the pump is running.

[0006] Furthermore, one end of the handheld part is provided with a rotating cover suitable for rotation and a liquid passage driven by the rotating cover. The rotating cover is provided with a mounting hole, and the conduit component is connected to the handheld part through the mounting hole. By rotating the rotating cover, the liquid passage and the conduit component can be selectively connected to the corresponding ports of the pump, and the other end of the liquid passage is correspondingly connected to the pipeline connected to the liquid storage container or the liquid suction container.

[0007] Furthermore, the handheld part also includes an end cap, the rotating cap being adapted to rotate relative to the end cap, the end cap being provided with a plurality of positioning holes, the plurality of positioning holes respectively defining the position of the pump port and the position of the port of the pipeline connecting to the liquid storage container and the liquid suction container.

[0008] Furthermore, the rotating cover is fitted to the end cover, the end cover is provided with a liquid passage groove, and the liquid passage route is defined by the liquid passage groove and the end cover.

[0009] Furthermore, a limiting structure is provided between the rotating cover and the end cover to limit the rotation range of the rotating cover.

[0010] Furthermore, the rotating cap has a first limit position and a second limit position within the rotation range. When the rotating cap is in the first limit position, the conduit component is connected to the first port of the pump, and the pipeline connecting to the liquid storage container is connected to the second port of the pump through the liquid passage. When the rotating cap is in the second limit position, the conduit component is connected to the second port, and the pipeline connecting to the liquid suction container is connected to the first port through the liquid passage.

[0011] Furthermore, one end of the conduit component is provided with a rotatable nozzle, and the nozzle is provided with several through holes.

[0012] Furthermore, the through-hole on the side of the nozzle extends tangentially along a reference circle, thereby adapting the nozzle to rotate under the influence of the ejected liquid.

[0013] The present invention also provides another oral suction-irrigator, which includes a handheld component and a tubing component connected to the handheld component. The handheld component includes a liquid storage container, a suction container, and an electromechanical component. The liquid storage container, the suction container, and the electromechanical component cooperate to define the outer contour of the handheld component. The electromechanical component includes a pump and its drive motor. One-way valves are respectively provided on the pipes connecting to the liquid storage container and the suction container, and are connected to one port of the pump through a three-way connector. The other port of the pump is connected to the tubing component, so that by different directions of the pump, it is suitable to spray liquid in the liquid storage container through the tubing component or to draw external liquid into the suction container.

[0014] Furthermore, one end of the conduit component is provided with a rotatable nozzle, and the nozzle is provided with a plurality of spray holes.

[0015] Furthermore, the nozzle's side orifices extend tangentially along a reference circle, thereby adapting the nozzle to rotate under the influence of the ejected liquid.

[0016] Furthermore, the pump is an internal gear pump.

[0017] The oral cavity suction and irrigator of the present invention is handheld and portable, and can realize the functions of electric rinsing and suction in one machine. It is suitable for one-handed operation, convenient to use, and has high operating accuracy. Moreover, it does not require an external liquid source or air source, and its application is not limited by location.

[0018] The following will further explain the concept, specific structure, and technical effects of the present invention in conjunction with the accompanying drawings, so as to fully understand the purpose, features, and effects of the present invention. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of an oral suction and rinsing device according to an embodiment of the present invention;

[0020] Figure 2 yes Figure 1 A structural schematic diagram of an integrated oral suction and rinsing device from another perspective;

[0021] Figure 3 yes Figure 1 Exploded view of the parts of an integrated oral suction and irrigator;

[0022] Figure 4 yes Figure 3 A magnified view of a portion of position A in the middle;

[0023] Figure 5 yes Figure 1 A schematic diagram of the handheld component in an integrated oral suction irrigator, where the rotating cap is not shown;

[0024] Figure 6 yes Figure 1 A schematic diagram of the structure of the end cap of the oral suction irrigator;

[0025] Figure 7 yes Figure 1 A schematic diagram of the structure of the transfer cover in the oral suction and irrigator, specifically the side near the end cover;

[0026] Figure 8 yes Figure 1 A schematic diagram of the tubing component in an integrated oral suction and irrigator, where the adapter is not shown;

[0027] Figure 9 yes Figure 1 A schematic diagram of the catheter component in an integrated oral suction and irrigator from another perspective, where the adapter is not shown;

[0028] Figure 10 yes Figure 8 Exploded view of the central guide tube and nozzle;

[0029] Figure 11 yes Figure 10 Schematic diagram of the structure of the central nozzle;

[0030] Figure 12 yes Figure 11 A schematic diagram of the radial cross-section of the nozzle shows the extended structure of the nozzle side orifices;

[0031] Figure 13 This is a partial structural schematic diagram of an oral suction-irrigation device according to another embodiment of the present invention, wherein electromechanical components are not shown;

[0032] Explanation of reference numerals in the attached figures:

[0033] 10 - Handheld components

[0034] 100 - liquid storage container,

[0035] 200 — Liquid suction container

[0036] 300—Electromechanical components,

[0037] 310 — Pump

[0038] 311, 312 — ports,

[0039] 320 — Motor

[0040] 330 — Battery

[0041] 340 - Bracket

[0042] 350 – outer casing

[0043] 400, 500 – Liquid delivery tubes

[0044] 410, 510 — ports,

[0045] 600—End cap,

[0046] 610 - Limiting groove

[0047] 611 - Protrusion,

[0048] 700 - Turn on the lid

[0049] 710 - Bump,

[0050] 720 - Mounting hole

[0051] 730—Liquid circulation tank,

[0052] 731, 732 — Connecting ports

[0053] 740 - Locking bolt

[0054] 80—Diagram components,

[0055] 810 - Adapter

[0056] 820 - Drainage tube

[0057] 830 - Sprayer head

[0058] 831 - Nozzle

[0059] 900 - T-connector

[0060] 910, 920 — Check valves. Detailed Implementation

[0061] In the description of the embodiments of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are used only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. The accompanying drawings are schematic diagrams or conceptual diagrams, and the relationships between the thickness and width of each part, as well as the proportional relationships between each part, etc., are not entirely consistent with their actual values.

[0062] Example 1

[0063] Figures 1 to 4A schematic diagram of an oral suction-irrigator according to an embodiment of the present invention is shown, including a handheld component 10 and a catheter component 80, the catheter component 80 being connected to the handheld component 10.

[0064] The handheld component 10 includes a liquid storage container 100, a liquid suction container 200, and an electromechanical component 300. In this embodiment, the handheld component 10 is generally cylindrical. The liquid storage container 100, the liquid suction container 200, and the electromechanical component 300 are fitted together, and the three together define the outer contour of the handheld component 10. Specifically, the liquid storage container 100 is also generally cylindrical. The liquid suction container 200 and the electromechanical component 300 are disposed at one end of the liquid storage container 100, and the two fit together to form a cylinder. Thus, the compact arrangement of the liquid storage container 100, the liquid suction container 200, and the electromechanical component 300 forms a long, cylindrical structure suitable for the user to hold.

[0065] The electromechanical component 300 includes a pump 310, a motor 320, a battery 330, a bracket 340, and a housing 350. The pump 310, motor 320, and battery 330 are fixed in the bracket 340, and the housing 350 is sleeved on the outside of the bracket 340 and fixed to the bracket 340.

[0066] The handheld component 10 is also provided with liquid guide tubes 400 and 500. One end of the liquid guide tube 400 extends into the liquid storage container 100. In this embodiment, the end of the liquid guide tube 400 that enters the liquid storage container 100 has a bend, and the bend is close to the bottom of the liquid storage container 100. The other end of the liquid guide tube 400 extends to one end of the handheld component 10, specifically the end away from the liquid storage container 100. The liquid guide tube 500 is disposed inside the outer casing 350. One end of the liquid guide tube 500 extends out of the outer casing 350 and is connected to the liquid suction container 200 disposed next to the outer casing 350. The other end of the liquid guide tube 500 extends to one end of the handheld component 10 in the same way as the other end of the liquid guide tube 410.

[0067] Ports 311 and 312 of pump 310, along with ports 410 and 510, extend towards the same end face of the handheld component 10 and are flush with it. The handheld component 10 has an end cap 600 at this end, which has a round cap-like structure. The end cap 600 has through holes that respectively mate with ports 311, 312, 410, and 510, allowing ports 311, 312, 410, and 510 to be exposed through the corresponding through holes. In this embodiment, ports 311 and 312 are symmetrically arranged near the center of the end cap 600 about its axial central axis, and ports 410 and 510 are also symmetrically arranged near the edge of the end cap 600 about its axial central axis. Figure 5 and Figure 6 As shown.

[0068] A rotating cover 700 is also provided on the outer side of the end cover 600. The rotating cover 700 is configured to rotate relative to the end cover 600. This can be achieved by a shaft connection, or by providing matching grooves and sliders on the outer periphery of the end cover 600 and the inner periphery of the rotating cover 700, respectively. No limitation is made here. The rotating cover 700 has a mounting hole 720. One end of the guide tube component 80 is inserted into the mounting hole 720 to connect to the handheld component 10. Figure 7 As shown.

[0069] The position of the mounting hole 720 matches the positions of the ports 311 and 312 of the pump 310, so that the conduit component 80 inserted into the mounting hole 720 can be aligned and connected with the ports 311 or 312. For example, in this embodiment, when the rotating cover 700 is rotated to a specific position, the port of the conduit component 80 on the side of the handheld component 10 can be aligned with the port 311 and the end faces of the two can be in close contact to form a connection. After rotating the rotating cover 700 by 180 degrees, the port of the conduit component 80 on the side of the handheld component 10 can be aligned with the port 311 again and the end faces of the two can be in close contact to form a connection.

[0070] like Figure 6 and Figure 7 As shown, in order to accurately control the docking position of the conduit component 80 with the port 311 or 312, a matching limiting groove 610 and a protrusion 710 are respectively provided on the end cap 600 and the rotating cap 700. The protrusion 710 is adapted to be set in the limiting groove 610. The limiting groove 610 extends circumferentially along the circular surface of the end cap 600. In this embodiment, the limiting groove 610 is in the shape of a 180-degree arc, so that the protrusion 710 can move within the range of the limiting groove 610 as the rotating cap 700 rotates. When the protrusion 710 is rotated to the extreme positions at both ends of the limiting groove 610, the conduit component 80 installed on the rotating cap 700 can be connected to the port 311 or 312 respectively.

[0071] In order to keep the protrusion 710 stably at the extreme positions at both ends, protrusions 611 are provided on the side walls at both ends of the limiting groove 610. When the protrusion 710 moves to the extreme positions at both ends of the limiting groove 610, the protrusions 611 abut against the protrusion 710, keeping it at the current extreme position.

[0072] A liquid passage groove 730 is also provided on the side of the rotating cover 700 facing the end cover 600. The position of the connecting port 731 at one end of the liquid passage groove 730 matches the positions of ports 311 and 312, and the position of the connecting port 732 at the other end matches the positions of ports 410 and 510. Since the surfaces of the end cover 600 and the rotating cover 700 are fitted together, the liquid passage groove 730 on the rotating cover 700 and the surface of the fitted end cover 600 together define a liquid passage, the shape of which is consistent with the shape of the liquid passage groove 730.

[0073] When the rotating cover 700 is rotated to the limit position at both ends of the limiting groove 610, the conduit component 80 is connected to one of the ports 311 and 312. At this time, the connecting port 731 of the liquid passage groove 730 is connected to the other of the ports 311 and 312, and the connecting port 732 of the liquid passage groove 730 is connected to one of the ports 410 and 510. In this embodiment, the two extreme positions that the rotating cover 700 can reach by rotating under the limiting groove 610 are defined as the first extreme position and the second extreme position, respectively. When the rotating cover 700 is in the first extreme position, the conduit component 80 is connected to the port 311, the connecting port 731 is connected to the port 312, the connecting port 732 is connected to the port 410, and the port 510 is closed by the surface of the end cover 600 that is attached to it. When the rotating cover 700 is rotated 180 degrees along the extension direction of the limiting groove 610 to reach the second extreme position, the conduit component 80 is connected to the port 312, the connecting port 731 is connected to the port 311, the connecting port 732 is connected to the port 510, and the port 410 is closed by the surface of the end cover 600 that is attached to it.

[0074] In a preferred embodiment, the radius of the limiting groove 610 is greater than the distance between the ports 410 and 510 and the center of the end cap 600. That is, the limiting groove 610 is closer to the edge of the end cap 600 than the ports 410 and 510. This avoids the limiting groove 610 and the liquid passage groove 730 from intersecting during the rotation of the rotating cap 700.

[0075] In this embodiment, the battery 330 is a rechargeable battery, which serves as the power supply for the motor 320. The motor 320 drives the pump 310 to operate. Port 311 of the pump 310 is the fluid outlet, and port 312 is the fluid inlet. The following two operating modes can be switched via the rotating cover 700:

[0076] In the flushing mode, when the rotating cap 700 is in the first extreme position, the conduit component 80 is connected to port 311, the connecting port 731 is connected to port 312, and the connecting port 732 is connected to port 410. This forms a fluid passage from the liquid guide tube 400 through the liquid channel 730 to port 312, into the pump 310, and then from port 311 to the conduit component 80. Since one end of the liquid guide tube 400 is located in the liquid storage container 100, when the pump 310 is running, the liquid in the liquid storage container 100 can pass through the above-mentioned fluid passage to the conduit component 80 and be sprayed out from the other port of the conduit component 80, thereby being used for flushing cysts in the oral cavity.

[0077] In the suction mode, when the rotating cap 700 is in the second extreme position, the conduit component 80 is connected to the port 312, the connecting port 731 is connected to the port 311, and the connecting port 732 is connected to the port 510. This forms a fluid passage from the conduit component 80 to the port 312, into the pump 310, and then from the port 311 through the liquid passage 730 to the liquid guide tube 500. Since one end of the liquid guide tube 500 is connected to the suction container 200, when the pump 310 is running, the liquid drawn by the conduit component 80 can enter the suction container 200 through the above-mentioned fluid passage, which can be used to drain the residual liquid in the cyst.

[0078] In some cases, medical staff may only use one of the above-mentioned flushing mode and suction mode for a certain period of time. For this reason, this embodiment also provides a locking bolt 740. The center of the rotating cover 700 is provided with a through hole for one end of the locking bolt 740 to pass through. Correspondingly, the end cover 600 is provided with a threaded hole that mates with the locking bolt 740. By tightening the locking bolt 740, the end cover 600 and the rotating cover 700 are secured, preventing them from rotating relative to each other, thereby locking the working mode of the device.

[0079] The conduit assembly 80 includes an adapter 810, a flow guide tube 820, and a nozzle 830, such as Figure 2 As shown, one end of the adapter 810 is connected to the mounting hole 720. The adapter 810 can be detachably connected to the mounting hole 720, or it can be fixedly connected to the mounting hole 720, or it can even be integrally formed with the cap 700. There are no restrictions here. The other end of the adapter 810 is detachably connected to the drainage tube 820, such as by threaded connection, snap connection or various matching medical connectors, so as to facilitate the replacement of drainage tubes of different shapes and specifications.

[0080] like Figure 8 and Figure 9 As shown, the drainage tube 820 has a curved arc structure to accommodate the rinsing requirements of the oral cavity. Figure 9 The maximum horizontal distance H between the inner side of the arc-shaped structure of the guide tube 820 and its end is shown. It is usually set to 20mm≤H≤50mm, and preferably in the range of 30mm≤H≤40mm. The inner diameter of the guide tube 820 is in the range of 2mm-8mm.

[0081] like Figure 10 As shown, the nozzle 830 is rotatably connected to one end of the guide tube 820, and the two can be connected by a matching groove and slider to achieve relative rotation between them. Figure 11 As shown, the nozzle 830 is provided with a plurality of nozzle holes 831, which are distributed on the end face and side face of the nozzle 830. For the nozzle holes 831 located on the side face, their axial direction extends tangentially along a circle, such as... Figure 12As shown, when liquid is ejected from the side nozzle 831, a force is generated that causes the nozzle 830 to rotate, thus keeping the nozzle 830 in a rotating state during flushing. The nozzle 831 located on the end face of the nozzle 830 does not need to be parallel to the axis of the nozzle 830; they can have an angle to increase the flushing range of the nozzle 831 on the end face. This arrangement of the nozzle 831 gives the nozzle 830 the advantages of a large flushing range and high flushing efficiency. When aspirating residual liquid from the cyst, the nozzle 830 can be retained, removed, or replaced with another guide tube.

[0082] Inside the housing 350, there is a control panel for the rinsing device (not shown in the figure). On the outside of the housing 350, there are corresponding control buttons, such as buttons for turning the device on / off and buttons for starting the motor. A charging port for the rechargeable battery is also provided.

[0083] When the user needs to add rinsing fluid to the storage container 100, the storage container 100 can be removed. The storage container 100 can be connected by means such as threaded connection or snap-fit ​​connection, and then reinstalled after the cleaning fluid is added. For draining the liquid from the suction container 200, this embodiment uses a drain hole (not shown in the figure) on the outer wall of the suction container 200, which is sealed with a plug. When drainage is needed, the plug is pulled out to drain the liquid from the suction container 200. Preferably, the drain hole is located at the bottom of the suction container 200, i.e., on the side of the suction container 200 facing the storage container 100, so that the drain hole and plug are not exposed, avoiding the risk of misoperation.

[0084] In some embodiments, the liquid storage container 100 and the liquid suction container 200 are made of transparent material and are marked with scale lines.

[0085] Example 2

[0086] Figure 13 A partial structural schematic diagram of an oral suction-irrigation device according to another embodiment of the present invention is shown. The difference between this embodiment and the first embodiment is the connection method between the liquid guide tubes 400 and 500 and the pump 310, as well as the driving method for the device's working mode.

[0087] In this embodiment, the liquid guide pipes 400 and 500 are connected to either port of the pump 310 via a three-way connector 900, and the conduit component 80 is connected to the other port of the pump 310. A one-way valve 910 is provided on the liquid guide pipe 400, which allows fluid to flow from the liquid storage container 100 to the pump 310. Correspondingly, a one-way valve 920 is provided on the liquid guide pipe 500, which allows fluid to flow from the pump 310 to the suction container 200.

[0088] When the flushing mode is required, the motor 320 is driven to rotate forward by pressing the corresponding button, thereby forming a fluid self-guiding tube 400. The fluid flows through the three-way connector 900 into the pump 310, and then out of the pump 310 to the conduit assembly 80. During this process, the one-way valve 910 is open and the one-way valve 920 is closed, thus blocking the flow of the guiding tube 500. Since one end of the guiding tube 400 is located in the storage container 100, when the pump 310 is running, the liquid in the storage container 100 can flow through the aforementioned fluid passage to the conduit assembly 80 and be ejected from the other end of the conduit assembly 80, thereby rinsing the cysts in the oral cavity.

[0089] When suction mode is required, the motor 320 is reversed by pressing the corresponding button, thus creating a fluid passage from the conduit component 80 into the pump 310, then out of the pump 310, through the three-way connector 900 to the liquid guide tube 500. During this process, the one-way valve 920 is open and the one-way valve 910 is closed, thereby blocking the flow of the liquid guide tube 400. Since one end of the liquid guide tube 500 is connected to the suction container 200, when the pump 310 is running, the liquid drawn by the conduit component 80 can enter the suction container 200 through the above-mentioned fluid passage, which can be used to drain residual fluid from the cyst.

[0090] In this embodiment, pump 310 uses an internal gear pump. Internal gear pumps have advantages such as simple and compact structure, small size, light weight, good manufacturability, low price, strong self-priming force, wide speed range, ability to withstand impact loads, convenient maintenance, and reliable operation.

[0091] Example 1 uses a mechanical switching of working modes, which prevents errors in the execution of working modes due to accidental touches during button operation. Example 2 uses an electronic switching of working modes, which simplifies the structure compared to Example 1, but there is a certain risk of accidental touches because different buttons are used to control the corresponding working modes.

[0092] In general, the oral cavity suction and irrigator provided in Embodiment 1 and Embodiment 2 above are both handheld and portable, capable of electric rinsing and suction functions in one device, suitable for one-handed operation, convenient to use, and highly accurate in operation. They do not require an external liquid or air source and are not limited by location.

[0093] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A combined oral suction and irrigator, characterized in that, The device includes a handheld component and a conduit component, the conduit component being connected to the handheld component; the handheld component includes a liquid storage container, a liquid suction container, and an electromechanical component, the liquid storage container, the liquid suction container, and the electromechanical component working together to define the external outline of the handheld component; the electromechanical component includes a pump and its drive motor, a switching mechanism connecting one port of the pump to a pipeline leading to the liquid storage container or the liquid suction container, and the other port to the conduit component, thereby adapting the pump to eject liquid from the liquid storage container or draw external liquid into the liquid suction container during operation; One end of the handheld part is provided with a rotating cover suitable for rotation and a liquid passage driven by the rotating cover. The rotating cover is provided with a mounting hole. The conduit component is connected to the handheld part through the mounting hole. By rotating the rotating cover, the liquid passage and the conduit component can be selectively connected to the corresponding ports of the pump, and the other end of the liquid passage is connected to the pipeline connected to the liquid storage container or the liquid suction container. The handheld part also includes an end cap, and the rotating cap is adapted to rotate relative to the end cap. The end cap and the rotating cap are respectively provided with a matching limiting groove and a protrusion to limit the rotation range of the rotating cap. The protrusion is adapted to be disposed in the limiting groove and can move within the limiting groove as the rotating cap rotates. The end cap is provided with a plurality of positioning holes, which respectively define the position of the pump port and the position of the port of the pipeline connecting to the liquid storage container and the liquid suction container. The rotating cover has a first limit position and a second limit position within the rotation range. The two limit positions that the rotating cover can reach by rotating under the limitation groove are defined as the first limit position and the second limit position, respectively. When the rotating cover is in the first limit position, the conduit component is connected to the first port of the pump, and the pipeline connecting to the liquid storage container is connected to the second port of the pump through the liquid passage. When the rotating cover is in the second limit position, the conduit component is connected to the second port, and the pipeline connecting to the liquid suction container is connected to the first port through the liquid passage.

2. The oral suction and irrigator as described in claim 1, characterized in that, The rotating cap is fitted to the end cap, the end cap is provided with a liquid passage groove, and the liquid passage route is defined by the liquid passage groove and the end cap.

3. The oral suction and irrigator as described in claim 1, characterized in that, One end of the conduit component is provided with a rotatable nozzle, and the nozzle is provided with a plurality of spray holes.

4. The oral suction and irrigator as described in claim 3, characterized in that, The nozzle's side nozzles extend tangentially along a reference circle, thereby adapting to the rotation of the nozzle by the ejected liquid.

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