Electric toothbrush

A handle part of an electric toothbrush configured to drive a removable brush part, the handle part comprising:

• a handle part housing;
• a motor having a motor shaft and disposed within the handle part housing;
• a drive element operably connected to the motor shaft through a gear step and positioned to drive an associated removable brush part;
• and
• pump driven by the motor shaft and defining a fluid outlet;
• wherein both the pump and the gear step are driven by a driver connected to the motor drive shaft, the pump being disposed between the motor and the gear step;
• and
• wherein the drive element defines a pressure fluid channel in fluid communication with the pump.

A replacement brush head for an electric toothbrush handle, the brush head comprising

• a carrier tube;
• a drive translator movable within the carrier tube and having a first end operably couplable to a drive of an electric toothbrush handle;
• a bristle carrier movably mounted on the carrier tube and carrying a set of bristles, the bristle carrier operably connected to, and drivable in oscillatory manner by, the drive translator;
• wherein the drive translator defines a passage therein, the passage forming a part of a fluid supply channel providing fluid communication between the first end of the drive translator and the bristle carrier, such that fluid pumped into the drive translator from the electric toothbrush handle is delivered to the bristle carrier.