Medela Holding Ag

Madela Holding Ag

David Imboden

Ivo Ramella

Manuel Ebert

Adrian Hofmann

A piston pump device has a support unit, a pump cylinder, and a pump piston arranged in the pump cylinder. The pump cylinder has a longitudinal center axis, and a cylinder bottom arranged perpendicular to the longitudinal center axis. The pump piston is movable relative to the cylinder bottom, and the pump cylinder is secured on the support unit by a securing unit. The securing unit has a leaf spring, which permits a pivoting movement of the longitudinal center axis of the pump cylinder relative to the support unit. The piston pump device is wear-resistant and runs quietly. When used as a suction pump, the piston pump device additionally permits a controllable air flow until the pump comes to a stop.

Piston pump device

A fluid-collecting container for receiving a siphoned-off fluid has a closed chamber for a solidifying agent. The chamber can be opened towards an internal space in the fluid-collecting container under external application of force. At least part of the chamber projects into the internal space in the fluid-collecting container. On the outer side of the container, the chamber is closed by an outer wall which can be pressed inwards, and the chamber is open towards the internal space in the fluid-collecting container by the outer wall being pressed in. The internal space continues to be closed to the outside in the region by the outer wall. The fluid-collecting container has a first and a second housing part which together form the internal space in the fluid-collecting container. The outer wall is formed integrally with a wall of the first housing part, the wall surrounding the outer wall. The fluid-collecting container can be produced cost-effectively and prevents damage to the chamber containing the solidifying agent prior to the use thereof. Furthermore, the chamber can be opened in a simple and safe manner when required.

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Baar, Switzerland

David Imboden