Toothbrush with pump

A pump toothbrush comprising:

• a brush portion, a grip portion and an intermediate arm portion, the grip portion comprising a container portion for a dental cleansing medium, said container portion being connected with the brush portion by a pump device in order to feed the dental cleansing medium into the brush portion through the arm portion, wherein:
• the pump device comprises a frame portion arranged between the container portion and the arm portion in such a way that casings of the container portion, the frame portion and the arm portion form an essentially congruent casing surface,
• the frame portion comprises a generally cylindrical recess located perpendicularly with respect to the longitudinal axis of the pump toothbrush,
• a generally cylindrical adjusting body forming an inner portion of the pump device is fitted into the recess, said body comprising an axial outwards open intermediate space acting as a chamber of the pump device,
• a pressure membrane comprising a cylindrical wall part and a flexible end part closing one end of said cylindrical wall part, said cylindrical wall part being fitted into said recess and forming a seal between the adjusting body and the frame portion, said flexible end part closing said chamber of the pump device and being exposed to permit application of pressure to the flexible end part to effect actuation of the pump device
• inlet and outlet valves arranged in a bottom of the adjusting body opposite the pressure membrane and at opposite sides of the recess to enable connection between and transfer of dental cleansing medium from the container portion to the brush portion through the inlet and outlet valves by exerting pressure on the flexible end part of the pressure membrane.