Portable oral irrigator

A portable oral irrigation attachment adapted for engagement with a power base, said portable oral irrigation attachment comprising:

• a housing;
• a power driven pump within said housing;
• a tube adapted to bring liquid to said pump;
• and
• an outlet for discharging a stream of pulsating liquid from said pump, said outlet including a tip adapted for insertion into an oral cavity,
• wherein said tube has a first end and a second end, said first end being attached to said housing, and said second end being free thus enabling said second end to be placed by a user into a container of liquid.

A method of irrigating an oral cavity, comprising:

• filling a container at least partially with a fluid;
• inserting a free end of a tube into said container, said tube affixed to a portable oral irrigator, said portable oral irrigator including a power driven pump and a tip adapted for insertion into the oral cavity;
• directing said tip at the oral cavity;
• and
• activating said pump of said portable oral irrigator to generate a stream of fluid into the oral cavity.

A portable oral irrigator comprising:

• a power source;
• a motor coupled to said power source;
• a drive shaft coupled to and rotated by said motor;
• and
• a pump including an inlet aperture, a fluid chamber, an outlet chamber and a piston coupled to and rotated by said drive shaft;
• said piston further includes a bearing and a ramped cam to convert rotational motion of said drive shaft to reciprocating linear motion of said piston, such that said piston alternately seals off said inlet aperture and said outlet aperture as it rotates and such that said piston reciprocates to form a vacuum within said fluid chamber when said piston has sealed off said outlet aperture drawing fluid into said fluid chamber through said inlet aperture and to form a pressure within said fluid chamber to jet fluid from said fluid chamber through said outlet aperture when said piston has sealed off said inlet aperture.