Oral irrigator with variable pressure
First Claim
Patent Images
1. An oral irrigator comprisinga fluid reservoir;
- a pumping assembly comprisinga power source;
a motor in electrical communication with the power source and including a drive shaft; and
a pump in fluid communication with the reservoir and connected to the drive shaft; and
a pressure control assembly in fluid communication with the pump, the pressure control assembly comprising;
a spool movable from a first position relative to an outlet of the pump to a second position relative to the outlet of the pump, wherein the spool comprises;
a lumen extending longitudinally along a length of the spool;
an orifice defined through an outer sidewall of the spool in fluid communication with the lumen;
whereinin the first position the orifice is aligned with and fluidly connected to the outlet of the pump; and
in the second position the orifice is misaligned with the outlet of the pump and is not fluidly connected to the pump; and
a control mechanism operably connected to the spool, wherein movement of the control mechanism in a first direction causes the spool to move in a second direction; and
movement of the control mechanism in the second direction causes the spool to move in the first direction; and
a nozzle in fluid communication with the pressure control assembly;
whereinwhen activated, the power source powers the motor, causing the drive shaft to rotate and activate the pump to pump a fluid from the reservoir to the nozzle in a series of pulses at a predetermined pulse rate; and
the pressure control assembly selectively and mechanically varies a pressure of the fluid exiting the nozzle, maintaining the predetermined pulse rate of the fluid as it exits the nozzle.
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Abstract
An oral irrigator including a fluid reservoir, a pumping assembly, a pressure control assembly, and a nozzle. The pumping assembly comprises a power source, a motor in electrical communication with the power source, and a pump in fluid communication with the reservoir. The pressure control assembly is in fluid communication with the pump; mechanically varies a pressure of a fluid exiting the nozzle to change the outlet pressure of the oral irrigator a high pressure to a low pressure and vice versa.
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Citations
11 Claims
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1. An oral irrigator comprising
a fluid reservoir; -
a pumping assembly comprising a power source; a motor in electrical communication with the power source and including a drive shaft; and a pump in fluid communication with the reservoir and connected to the drive shaft; and a pressure control assembly in fluid communication with the pump, the pressure control assembly comprising; a spool movable from a first position relative to an outlet of the pump to a second position relative to the outlet of the pump, wherein the spool comprises; a lumen extending longitudinally along a length of the spool; an orifice defined through an outer sidewall of the spool in fluid communication with the lumen;
whereinin the first position the orifice is aligned with and fluidly connected to the outlet of the pump; and in the second position the orifice is misaligned with the outlet of the pump and is not fluidly connected to the pump; and a control mechanism operably connected to the spool, wherein movement of the control mechanism in a first direction causes the spool to move in a second direction; and
movement of the control mechanism in the second direction causes the spool to move in the first direction; anda nozzle in fluid communication with the pressure control assembly;
whereinwhen activated, the power source powers the motor, causing the drive shaft to rotate and activate the pump to pump a fluid from the reservoir to the nozzle in a series of pulses at a predetermined pulse rate; and the pressure control assembly selectively and mechanically varies a pressure of the fluid exiting the nozzle, maintaining the predetermined pulse rate of the fluid as it exits the nozzle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A water flossing device comprising
a reservoir; -
a nozzle in fluid communication with the reservoir; a pump having an inlet in fluid communication with the reservoir and an outlet in fluid communication with the nozzle; a motor connected to the pump and configured to selectively activate the pump; a power source in electrical communication with the motor; and a pressure assembly connected between the nozzle and the pump, the pressure assembly includes a spool comprising; a lumen defined longitudinally along a length of the spool; and an orifice defined through a sidewall of the spool and in fluid communication with the lumen; a first sealing member connected to the spool and positioned above the orifice; and a second sealing member connected to the spool and positioned below the orifice;
whereinin an on state the power source provides a substantially constant voltage to the motor and the pressure assembly selectively varies an outlet pressure of fluid exiting the nozzle while maintaining a constant pulse rate of the fluid exiting the nozzle, wherein the outlet pressure varies between a high pressure setting and a low pressure setting, during the high pressure setting, the spool is in a first position relative to the outlet of the pump and the orifice is fluidly sealed from the outlet of the pump; and during the low pressure setting, the spool is in a second position relative to the outlet of the pump and the orifice is in fluid communication with the outlet of the pump and fluid flows through the orifice into the lumen from the outlet of the pump.
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Specification