Abstract: 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.

Abstract: Disclosed are various embodiments for an anti-reflux nasal aspirator that includes a nozzle comprising a nozzle outlet, a bulb configured to provide suction at the nozzle outlet in response to a squeezing force applied to the bulb, an anti-reflux coupler positioned between the bulb and the nozzle through which air passes from the bulb to the nozzle, and a one-way air valve positioned in an aperture located at a base of the bulb. The anti-reflux coupler may include a check valve configured to prevent reflux of debris into the bulb. The check valve may include one of an umbrella valve; a duckbill valve; a slit-cutting valve; and a flapper valve.

Abstract: Disclosed are various embodiments for an anti-reflux tube-type enemator that is leakproof, easy-to-clean, and quickly inflates to provide a steady flow of solution. The anti-reflux enemator includes a nozzle comprising a nozzle outlet, a tube fluidly coupled to the nozzle, and an enema bulb fluidly coupled to the tube. The enema bulb is configured to store solution therein and, in response to a squeezing force applied to the enema bulb, direct the solution through the tube and the nozzle, and expel the solution through the nozzle outlet. An anti-reflux coupler is positioned between the enema bulb and the tube through which the solution passes from the enema bulb to the tube. One or more one-way air valves are positioned relative to an aperture of the enema bulb.

Abstract: Disclosed are various embodiments for an anti-reflux enema bag having a pulley restrictor that acts as a waterflow restrictor, where the enema bag is leakproof, easy-to-clean, and provides a steady flow of solution. An enema bag system includes an enema bag, a nozzle comprising a nozzle outlet, and an anti-reflux coupler positioned between the enema bag and the nozzle through which the solution passes from the enema bag to the nozzle outlet. The anti-reflux coupler comprises an inlet for receiving at least a portion of the solution from the enema bag; an outlet for expelling the solution into the nozzle; and a check valve configured to prevent reflux of the solution from the nozzle. The enema bag system further comprises a pulley restrictor configured to selectively control a speed at which the solution is introduced into the nozzle and expelled from the nozzle outlet.

Abstract: The present application discloses an ear-cover structure and an ear irrigation device. The ear-cover structure includes a cover configured with a containing space with an opening configured at a side of the containing space, a liquid collecting portion extending outwards from the bottom of the cover, and an injection port configured on the cover and communicating with the containing space. The medium collected in the containing space flows through the liquid collecting portion and is discharged from a leakage port to the external environment.