Ear irrigation device
View Patent ↗The ear irrigation device for the removal of earwax integrates a fluid injector assembly with a fluid container ( 2 ) which is loaded and discharged by means of a guided rod ( 3 ) and plunger ( 4 ) assembly with bidirectional linear sliding through its inside, arranged in the container ( 2 ), which it divides into a front chamber ( 2 a ) and a rear chamber ( 2 b ), an actuating element ( 5 ) to move the rod-plunger assembly ( 3, 4 ) to said retracted position, a retaining element ( 13 ) to retain it, and a nozzle portion ( 6 ) for discharging by ejection the fluid of the front chamber ( 2 a ) of the container ( 2 ) having been provided. A handgrip ( 7 ) with a trigger ( 8 ) controls the retaining element ( 13 ) to release the rod-plunger assembly ( 3, 4 ) and allow it to move towards said extended position. The rod ( 3 ) of the plunger ( 4 ) is hollow and houses a fixed axial guide element ( 10 ) and a spring ( 12 ) coaxial to the axial element ( 10 ).
1. An ear irrigation device for the removal of earwax, which integrates
a fluid injector assembly formed by
a body defining
a container for fluid which is loaded into the container and discharged therefrom by means of
a rod and plunger assembly arranged with hermetic sealing in said container, so as to divide the container into a front chamber for the fluid and a rear chamber, and enable bidirectional linear sliding of the rod and plunger assembly through an inside of the container between a retracted position and an extended position, and vice versa,
an actuating element to move said rod and plunger assembly to said retracted position,
a retaining element to retain said rod and plunger assembly in said retracted position,
a nozzle portion, through which the fluid of the front chamber of the container is discharged by ejection, and
a handgrip with a trigger controlling at least the retaining element to release the rod and plunger assembly retained by the latter and to allow the rod plunger assembly to move towards said extended position, wherein:
the rod and plunger assembly includes a hollow rod having an end that is distal from said plunger and is attached to a part acting as a guide which slides inside said rear chamber of the container,
the hollow rod of the plunger is hollow and is provided for housing, when the rod and plunger assembly moves, a fixed axial guide element starting from an end part for closing the container, and
a spring is provided coaxial to the fixed axial guide element, said spring being housed inside the hollow rod.
2. The device according to claim 1 , wherein the spring extends from the starting area of the axial element to the bottom of the hollow of the hollow rod of the plunger, such that the spring is compressed when the axial element is inserted in the hollow of the hollow rod and provides the actuation force so that the plunger, when the spring is released by means of the trigger, moves towards said extended position to push the fluid of the front chamber of the container and discharge the fluid by ejection through said nozzle portion.
3. The device according to claim 1 or 2 , wherein said spring provides a determined speed of the fluid exiting the front chamber of the container.
4. The device according to claim 2 , wherein said spring comprises the juxtaposition of several spring sectors.
5. The device according to claim 1 , wherein the part acting as a guide has associated therewith a cylindrical protrusion in which pins are locked, the pins extending into grooves of respective opposing arms of a U-shaped part, which emerges to an exterior of the container and is attached to a pull forming the actuating element ( 5 ) and compresses the spring by traction of said U-shaped part to drive the rod and plunger assembly.
6. The device according to claim 2 , wherein the hollow rod has in an outer face a plurality of flanges which can interfere with said retaining element, which is elastically loaded and controlled by the trigger, for the purpose of releasing the hollow rod from a situation of compression of the spring so as to enable stopping of movement of the rod and plunger assembly in any desired position.
7. The device according to claim 6 , wherein said flanges are equidistant.
8. The device according to claim 6 or 7 , wherein the trigger comprises a pusher operating against a pin transversely linked to the retaining element, by means of the push by the perimetric wall of oblique elongated openings against the ends of said pin introduced in such openings, such that the movement of the trigger forces the retaining element to move downwards loading a spring, and its release returns the retaining element to a position of interference with the flanges.
9. The device according to claim 5 , wherein the U-shaped part and pull are retractable towards the inside of the rear chamber of the container once the plunger has been moved to said retracted position, or loaded position, and retained in said position by the retaining element.
10. The device according to claim 1 , wherein said part acting as a guide has a span equivalent to the plunger.
11. The device according to claim 3 , wherein said spring comprises the juxtaposition of several spring sectors.
12. An ear irrigation device for the removal of earwax, which integrates a fluid injector assembly formed by:
a body defining
a container for fluid which is loaded into the container and discharged therefrom by means of
a rod and plunger assembly arranged with hermetic sealing in said container to divide the container into a front chamber for the fluid and a rear chamber so as to enable bidirectional linear sliding of the rod and plunger assembly through an inside of the container between a retracted position and an extended position, and vice versa,
an actuating element to move said hollow rod and plunger assembly to said retracted position,
a retaining element to retain said hollow rod and plunger assembly in said retracted position,
a nozzle portion, through which the fluid of the front chamber of the container is discharged by ejection, and
a handgrip with a trigger controlling at least the retaining element to release the hollow rod and plunger assembly retained by the latter and to allow the rod and plunger assembly to move towards said extended position, wherein:
the rod and plunger assembly includes a hollow rod with an end that is distal from said plunger and attached to a part acting as a guide that slides inside said rear chamber of the container,
the hollow rod of the plunger is hollow and is provided for housing, when the hollow rod and plunger assembly moves, a fixed axial guide element starting from an end part for closing the container,
a spring is provided coaxial to the fixed axial guide element, said spring being housed inside the hollow rod, and
the part acting as a guide has associated therewith a cylindrical protrusion in which pins are locked, the pins extending into grooves of respective opposing arms of a U-shaped part, which emerges to an exterior of the container and is attached to a pull forming the actuating element so as to compress the spring by traction of said U-shaped part to drive the hollow rod and plunger assembly.
13. The device according to claim 12 , wherein the U-shaped part and pull are retractable towards the inside of the rear chamber of the container once the plunger has been moved to said retracted position, or loaded position, and retained in said position by the retaining element.
14. An ear irrigation device for the removal of earwax, which integrates a fluid injector assembly formed by:
a body defining
a container for the mentioned fluid which is loaded into the container and discharged therefrom by means of
a rod and plunger assembly arranged with hermetic sealing in said container to divide the container into a front chamber for the fluid and a rear chamber so as to enable bidirectional linear sliding of the rod and plunger assembly through an inside of the container between a retracted position and an extended position, and vice versa,
an actuating element to move said rod and plunger assembly to said retracted position,
a retaining element to retain said rod and plunger assembly in said retracted position,
a nozzle portion, through which the fluid of the front chamber of the container is discharged by ejection, and
a handgrip with a trigger controlling at least the retaining element to release the rod and plunger assembly retained by the latter so as to allow the rod and plunger assembly to move towards said extended position, wherein:
the rod and plunger assembly includes a hollow rod that has an end that is distal from said plunger and attached to a part acting as a guide that slides inside said rear chamber of the container,
the hollow rod of the plunger is hollow and is provided for housing, when the rod-plunger assembly moves, a fixed axial guide element starting from an end part for closing the container,
a spring is provided coaxial to the fixed axial guide element, said spring being housed inside the hollow rod;
the part acting as a guide has associated therewith a cylindrical protrusion in which pins are locked, the pins extending into grooves of respective opposing arms of a U-shaped part, which emerges to an exterior of the container and is attached to a pull forming the actuating element and compresses the spring by traction of said U-shaped part to drive the rod-plunger assembly, and
the U-shaped part and pull are retractable towards an inside of the rear chamber of the container once the plunger has been moved to said retracted position, or loaded position, and retained in said position by the retaining element.