| 主权项 |
1. A toothbrush, comprising:
a housing having a handle and a toothbrush head; a pump having a pump chamber and a pump impeller or pump gear arranged in the pump chamber; a motor driving the impeller or pump gear; and an input port and an output port connected to the chamber, the impeller causing a flow of a working fluid through the output port when the impeller is driven by the motor and the working fluid is supplied through the input port, whereby a stream of fluid exits the output port for oral rinsing, the pump chamber having a circumferential wall defining a transverse cross sectional shape of the pump chamber, the output port being connected to the pump chamber through the circumferential wall. |
