Roche Diabetes Care, Inc.

F. Hoffmann-La Roche Ag

Olaf Lebau

Thomas Kristen

Oliver Kreidemacher

Disclosed is a pierceable septum for use in drug reservoirs and infusion sets. The pierceable septum has an elastic core made from a core material and a surround made from a surrounding material. The surrounding material is more rigid than the core material. The elastic core is fully embedded in the surround.

Overmolded septum

Disclosed herein is a pierceable elastic septum for use in drug reservoirs and infusion sets, the pierceable septum comprising a first surface and a second surface. The first surface and the second surface are positioned opposite to each other. A distance between the first surface and the second surface is not constant over the first surface, and is configured such that if a higher pressure is applied to the first surface as compared to the second surface, a component of a force, which is exerted on the first surface, acts towards an axis (A) which intersects the center of the first surface and the center of the second surface.

Self-sealing septum

Disclosed is septum arrangement having a pierceable septum. The pierceable septum has first and second surfaces positioned opposite to one another and a peripheral surface. A compression element has at least two compression members that partially or fully surround the peripheral surface and has at least two gripping members. Each compression member is connected to at least one gripping member, and the gripping members extend from the compression members towards a common axis (A) which intersects the first surface. A resilient element exerts a biasing force on the pierceable septum that is directed towards the common axis (A). The gripping members define an aperture between them such that introduction of a needle into the aperture exerts a force on the gripping members that counteracts the biasing force and moves the gripping members apart from each other.

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Wiesbaden, Germany

Olaf Lebau