Ear irrigation device

An ear irrigation device includes a water reservoir, a water inlet chamber, a water inlet assembly communicating with the water inlet chamber and a water outlet assembly communicating with the water inlet chamber. A piston is inserted at one end of the water inlet chamber, the piston and an interior of the water inlet chamber form a chamber, a recess is formed on a side of the piston away from the chamber, a rotor is rotatably connected in the recess, the rotor is connected with a link, an end of the link away from the rotor is connected with an eccentric rotating assembly, one end of the water inlet assembly communicates with the water reservoir, a check valve is arranged in the water inlet assembly, and another check valve is arranged in the water outlet assembly.

CROSS-REFERENCE TO RELATED APPLICATION

This application is based on and claims the priority benefits of China application No. 202023345858.1, filed on Dec. 30, 2020. The entirety of the above-mentioned patent application is hereby incorporated by reference herein and made a part of this specification.

BACKGROUND

Technical Field

The present application relates to the field of medical instruments, and in particular, to an ear irrigation device.

Description of Related Art

Irrigation of the external auditory canal refers to irrigating an ear with warm physiological saline to remove soft cerumen and small cerumen fragments, tiny foreign materials or softening impacted cerumen which are not easy to remove from the deep part of the external auditory canal, with the need of using an ear irrigator, warm physiological saline, cotton swab, or the like.

In the related art, an ear washer reservoir is generally used for introducing water into an auditory canal, and the water is pumped into the auditory canal by pressing the pressing handle of the ear washer reservoir by hand. Therefore, different pressing handles are required for the user, and the operation is troublesome. However, if a general electric irrigation device is adopted to pump water into the auditory canal, the tympanic membrane in the auditory canal will be subjected to an impact since the water flow of the irrigating water is continuous, thereby causing discomfort to the user.

SUMMARY

In order to reduce the impact of the water flow of an electric irrigation device on the auditory canal, the present application provides an ear irrigation device.

In one embodiment, an ear irrigation device includes a water reservoir, a water inlet chamber, a water inlet assembly and a water outlet assembly. The water inlet assembly communicates with the water inlet chamber, the water outlet assembly communicates with the water inlet chamber. One end of the water inlet chamber is provided with a slidably engaged piston by insertion, the piston and an interior of the water inlet chamber form a chamber, a recess is formed on a side of the piston facing away from the chamber, and a rotor is rotatably connected in the recess. The rotor is connected with a link, an end of the link away from the rotor is connected with an eccentric rotating assembly which drives one end of the link connecting the rotor to reciprocate in the direction of the chamber. One end of the water inlet assembly communicates with the water reservoir, a check valve in unidirectional communication with the interior of the water inlet chamber is arranged in the water inlet assembly, and another check valve in unidirectional communication with the outside of the water inlet chamber is arranged in the water outlet assembly.

By adopting the above technical solution, when the eccentric rotating assembly drives the piston to move in a direction away from the chamber formed by the water inlet chamber through the rotor on the link, a negative pressure is generated in the chamber. Due to the unidirectional flow function of the check valve, the water outlet assembly is closed, and then the water inlet assembly is communicated, and the water inlet assembly introduces water in the water reservoir into the chamber. When the piston moves towards the chamber, the water inlet assembly is closed, the water outlet assembly is communicated, and water in the chamber flows out through the water outlet assembly. Therefore, when the piston reciprocates, the chamber is repeatedly switched between the water inlet action and the water outlet action, so that water intermittently flows out, thus avoiding the impact of continuous water flow on the tympanic membrane.

Optionally, the eccentric rotating assembly includes a rotating disk, an eccentric ring, a driving ring and a rotating motor. A rotating shaft penetrates through an axial center of the rotating disk, the eccentric ring is eccentrically connected to a side surface of the rotating disk, the rotating shaft is located in a space surrounded by the eccentric ring, the driving ring is coaxially sleeved outside the eccentric ring, the driving ring is connected to the link, a conical gear ring is coaxially connected with a side edge of the rotating disk, and a driving shaft of the rotating motor is coaxially connected with a conical gear meshed with the conical gear ring.

By adopting the above technical solution, the rotating motor drives the conical gear to rotate the meshed conical gear ring, so as to rotate the eccentric ring on the rotating disk, and the eccentric ring in turn drives the driving ring to move up and down with left and right shaking. The left and right shaking of the driving ring are converted into sliding between the rotor and the recess, and the up-down movement of the driving ring are converted into a reciprocating movement of the piston towards the chamber.

Optionally, the ear irrigation device further includes a base and an end cover, the base and the end cover are connected to form a cavity enclosing the rotating disk, the eccentric ring and the driving ring. A first pivotal groove is formed in a side surface of the base facing the end cover, a second pivotal groove is formed in a side surface of the end cover facing the base, and two ends of the rotating shaft abut against an inner bottom wall of the first pivotal groove and an inner bottom wall of the second pivotal groove, respectively.

By adopting the above technical solution, the base and the end cover form the cavity to protect the movement of the rotating disk, the eccentric ring and the driving ring, and the first pivotal groove and the second pivotal groove axially limit the rotating shaft.

Optionally, an inner wall of the recess is provided with a radially protruded ring, and the protruded ring abuts against the rotor and prevents the rotor from disengaging from the recess.

By adopting the above technical solution, the protruded ring prevents the rotor from disengaging from the recess.

Optionally, an annular groove is circumferentially formed in the side wall of the piston, and a sealing ring is embedded in the annular groove.

By adopting the above technical solution, the sealing ring improves the sealing property between the side wall of the piston and the inner wall of the water inlet chamber, and avoids air leakage or water leakage between the side wall of the piston and the inner wall of the water inlet chamber.

Optionally, the water inlet assembly includes a first water inlet connector, a second water inlet connector, a first water inlet pipe, a second water inlet pipe and a closure plug. The first water inlet connector communicates with the water inlet chamber, the first water inlet pipe communicates with the first water inlet connector, one end of the first water inlet pipe away from the first water inlet connector communicates with the second water inlet connector, one end of the second water inlet connector away from the first water inlet pipe is circumferentially sleeved with the closure plug. The closure plug is axially formed with a water passage hole communicating with the first water inlet pipe, the second water inlet pipe is inserted into one end of the water passage hole away from the first water inlet pipe, one open end of the water reservoir is sleeved on a circumferential side wall of the closure plug, one end of the second water inlet pipe away from the closure plug is close to an inner bottom wall of the water reservoir, and the closure plug is axially formed with a ventilation hole communicating with the water reservoir.

By adopting the above technical solution, the circumferential side wall of the closure plug is snap connected in the inner wall of the water reservoir, to avoid the water in the water reservoir from leaking out of the reservoir opening. The ventilation hole equalizes the air pressure in the water reservoir pumps water, thereby avoiding the difficulty of pumping water due to negative pressure generated in the water reservoir.

Optionally, the water outlet assembly includes a water outlet connector, a first water outlet pipe and a second water outlet pipe, the water outlet connector communicates with the water inlet chamber, the first water outlet pipe communicates with the water outlet connector, and the second water outlet pipe communicates with one end of the first water outlet pipe away from the water outlet connector.

By adopting the above technical solution, the water outlet assembly is divided into a separate water outlet connector, a first water outlet pipe and a second water outlet pipe, which can be assembled, so as to facilitate the processing of the water outlet assembly.

Optionally, the check valve includes a spring, a ball head and a water passage base allowing water to pass through, and two ends of the spring are respectively connected with the water passage base and the ball head.

By adopting the above technical solution, the ball head closes the water inlet assembly and the water outlet assembly, and the spring provides a force for the ball head to close the water inlet assembly and the water outlet assembly.

Optionally, one end of the second water outlet pipe away from the first water outlet pipe is detachably connected with an irrigation nozzle.

By adopting the above technical solution, the irrigation nozzle is replaceable, and the ear irrigation device is more hygienic to use.

Optionally, an ear cover is circumferentially connected with the side wall of the irrigation nozzle.

By adopting the above technical solution, the ear cover may receive water flowing out of the auditory canal and gather the water collectively.

In summary, the present application provides at least one of the following advantages:

The eccentric rotating assembly drives the piston to reciprocate, so that water intermittently flows out, thus avoiding the impact of continuous water flow on the tympanic membrane.

DESCRIPTION OF THE EMBODIMENTS

This application is described in detail below in combination withFIGS.1-10.

Embodiments of the present application disclose an ear irrigation device. Referring toFIG.1, the ear irrigation device includes a water reservoir1, an irrigation nozzle35and an ear cover36. The ear cover36is circumferentially connected with the side wall of the irrigation nozzle35. When in use, the ear is covered with the ear cover36, the irrigation nozzle35is inserted into the external auditory canal, and water is introduced from the water reservoir1into the external auditory canal through the irrigation nozzle35.

Referring toFIG.2, the irrigation nozzle35has screw threads formed on an outer side wall at the end thereof for connection.

Referring toFIGS.3and4, a water inlet chamber2, a water inlet assembly and a water outlet assembly are arranged within a housing of the ear irrigation device. The water inlet assembly communicates with the water inlet chamber2, and the water outlet assembly communicates with the water inlet chamber2. One end of the water inlet assembly away from the water inlet chamber2is inserted into the bottom of the water reservoir1, and one end of the water outlet assembly away from the water inlet chamber2communicates with the irrigation nozzle35.

Referring toFIG.4, the water outlet assembly includes a water outlet connector29, a first water outlet pipe30and a second water outlet pipe31, the water outlet connector29communicates with the water inlet chamber2, the first water outlet pipe30communicates with the water outlet connector29, and the second water outlet pipe31communicates with one end of the first water outlet pipe30away from the water outlet connector29. The irrigation nozzle35communicates with one end of the second water outlet pipe31away from the first water outlet pipe30. In some embodiments, the water outlet connector29communicates with the water inlet chamber2in such a way that the water outlet connector29is integrally formed with the water inlet chamber2, and a through hole communicating with the water inlet chamber2is formed along the axis of the water outlet connector29. The first water outlet pipe30communicates with the water outlet connector29in such a way as to extend an integrally formed hollow pipe body from the water outlet connector29, and the first water outlet pipe30is coaxially sleeved on the pipe body extending from the water outlet connector29. The second water outlet pipe31communicates with one end of the first water outlet pipe30away from the water outlet connector29in such a way that one end of the first water outlet pipe30is sleeved at one end of the second water outlet pipe31. The irrigation nozzle35communicates with one end of the second water outlet pipe31away from the first water outlet pipe30in such a way that the screw thread on the outer side wall of the irrigation nozzle35is in threaded connection with the inner wall of the second water outlet pipe31.

Referring toFIG.4, the water inlet assembly includes a first water inlet connector22, a second water inlet connector23, a first water inlet pipe24, a second water inlet pipe25and a closure plug26. The first water inlet connector22communicates with the water inlet chamber2, the first water inlet pipe24communicates with the first water inlet connector22. One end of the first water inlet pipe24away from the first water inlet connector22communicates with the second water inlet connector23. One end of the second water inlet connector23away from the first water inlet pipe24is circumferentially sleeved with a closure plug26. In some embodiments, the first water inlet connector22communicates with the water inlet chamber2in such a way that the first water inlet connector22is integrally formed with the water inlet chamber2, and the first water inlet connector22is axially formed with a through hole communicating with the water inlet chamber2. The first water inlet pipe24communicates with the first water inlet connector22in such a way that a pipe body communicating with the first water inlet connector22is integrally formed on the first water inlet connector22, and the first water inlet pipe24is coaxially sleeved on the pipe body integrally formed on the first water inlet connector22. One end of the first water inlet pipe24away from the first water inlet connector22communicates with the second water inlet connector23in such a way that a pipe body is integrally formed at an upper end of the second water inlet connector23, and the first water inlet pipe24is sleeved on the pipe body integrally formed with the second water inlet connector23.

Referring toFIG.8, the closure plug26is axially formed with a water passage hole27communicating with the first water inlet pipe24, and the closure plug26is axially formed with a ventilation hole28spaced from the water passage hole27. The second water inlet pipe25is inserted into one end of the water passage hole27away from the first water inlet pipe24, an opening of the water reservoir1is sleeved on a circumferential side wall of the closure plug26, one end of the second water inlet pipe25away from the closure plug26is close to an inner bottom wall of the water reservoir1. In some embodiments, the closure plug26is made of rubber, and when an open end of the water reservoir1is circumferentially sleeved on the side wall of the closure plug26, the inner wall of the reservoir opening of the water reservoir1is in close contact with the outer side wall of the closure plug26, thereby preventing water from leaking out of the junction between the water reservoir1and the closure plug26. The upper ventilation hole28of the closure plug26plays a role of equalizing the air pressure with the outside, thereby avoiding the difficulty of pumping water due to negative pressure generated in the water reservoir1.

Referring toFIG.5, one end of the water inlet chamber2away from the water outlet connector29and the first water inlet connector22is inserted into and slidably connected with a piston3, and a cavity4is formed between the piston3and the water inlet chamber2. Check valves8are arranged both at the junction between the water outlet connector29and the water inlet chamber2, and at the junction between the first water inlet connector22and the water inlet chamber2. In some embodiments, the check valve8in the first water inlet connector22in unidirectional communication with the interior of the water inlet chamber2, and the check valve8in the water outlet connector29in unidirectional communication with the outside of the water inlet chamber2. Referring toFIG.10, the check valve8includes a spring32, a ball head33and a water passage base34allowing water to pass through, and two ends of the spring32are respectively connected with the water passage base34and the ball head33. The water passage base34is formed by three rods extending radially from one point, a positioning rod is connected to the center of the water passage base34, and the positioning rod is located on the axis of the spring32. Referring toFIG.5, the ball head33of the check valve8in the first water inlet connector22closes the hollow pipe body extending from the first water inlet connector22. The ball head33of the check valve8at the junction between the water outlet connector29and the water inlet chamber2closes the hole communicating with the water inlet chamber2and the water outlet connector29. In some embodiments, the check valve8can achieve a unidirectional flow function at any position in the water inlet assembly and the water outlet assembly, so the check valve8can be within the water inlet assembly and the water outlet assembly.

With reference toFIGS.5and6, a recess5is formed at an end of the piston3away from the cavity4, and a rotor6is rotatably connected in the recess5. InFIG.6, the rotor6has a spherical shape. In some other embodiments, since the rotational direction of the rotor6is only in one plane, the rotor6may also have a shape of a circular disk. The inner wall of the recess5is provided with a radially protruded ring20for preventing the rotor6from disengaging from the recess5, and the inner diameter of the protruded ring20is smaller than the outer diameter of the rotor6. An annular groove is circumferentially formed in the side wall of the piston3, and a sealing ring21is embedded in the annular groove. The sealing ring improves the sealing property between the piston3and the water inlet chamber2. Referring toFIG.7, the sealing ring21has a V-shaped cross section, and the V-shaped sealing ring21forms a notch, the direction of the notch faces towards the cavity4of the water inlet chamber2. The V-shaped arrangement of the sealing ring21enables the sealing ring21to have two layers, so as to improve the sealing property of the contact surface between the piston3and the water inlet chamber2. Referring toFIGS.5and6, the rotor6is connected with a link7, an end of the link7away from the rotor6is connected with an eccentric rotating assembly which drives one end of the link7connecting the rotor6to reciprocate in the direction of the cavity4. The eccentric rotating assembly includes a rotating disk9, an eccentric ring10, a driving ring11and a rotating motor12. A rotating shaft13penetrates through an axial center of the rotating disk9. The eccentric ring10is eccentrically connected to a side surface of the rotating disk9, and the rotating shaft13is located in a space surrounded by the eccentric ring10. An annular column rotatably connected with the rotating shaft13is integrally formed in the eccentric ring10. Since the rotating shaft13itself has been rotatably connected to the rotating disk9, the arrangement of the annular column mainly maintains the stability of rotatory connection of the rotating disk9with the rotating shaft13. The driving ring11is coaxially sleeved outside the eccentric ring10, the driving ring11is connected to the link7, a conical gear ring14is coaxially connected with a side edge of the rotating disk9, and a driving shaft of the rotating motor12is coaxially connected with a conical gear15meshed with the conical gear ring14.

Referring toFIGS.4and9, the ear irrigation device further includes a base16and an end cover17. The base16and the end cover17are connected to form a cavity enclosing the rotating disk9, the eccentric ring10and the driving ring11, and protect the cavity of the rotating disk9, the eccentric ring10and the driving ring11. As shown inFIG.9, a first pivotal groove18is formed in a side surface of the base16facing the end cover17, and the first pivotal groove18is surrounded by an annular ring on the base16. As shown inFIG.4, a second pivotal groove19is formed in a side surface of the end cover17facing the base16, and the second pivotal groove19is formed by protruding outward on the end cover17. Two ends of the rotating shaft13abut against an inner bottom wall of the first pivotal groove18and an inner bottom wall of the second pivotal groove19, respectively, and therefore, the first pivotal groove18and the second pivotal groove19axially limit the rotating shaft13.

The implementation principle of the ear irrigation device according to the embodiments of the present application is as follows: referring toFIG.5, the rotating motor12drives the conical gear15to rotate the meshed conical gear ring14, so as to rotate the eccentric ring10on the rotating disk9, and the eccentric ring10in turn drives the driving ring11to move up and down with left and right shaking. The left and right shaking of the driving ring11are converted into sliding between the rotor6and the recess5, and the up-down movement of the driving ring11are converted into a reciprocating movement of the piston3towards the chamber3. As the piston3moves towards the cavity4, the ball head33of the check valve8in the water outlet connector29is pushed away so that the water in the cavity4runs out of the irrigation nozzle35. When the piston3moves in a direction away from the cavity4, the ball head33within the first water inlet connector22is pushed away due to the negative pressure within the cavity4, so that the water in the water reservoir1is pumped into the water inlet chamber2. Due to the reciprocating movement of the piston3, water in the water inlet chamber2intermittently flows out of the irrigation nozzle35, thereby avoiding the impact of continuous water flow on the external auditory canal.

The above description is only preferred embodiments of the present application and is not intended to limit the protection scope of the present application. Therefore, all equivalent changes of the structure, shape or principle according to the spirit of the present application should be all included in the protection scope of the present application.