Infusion device intended for implantation in a living body

Abstract From the Canadian patent

The exemplary embodiments relate to a device housing implantable in the body and having a reservoir for the infusion of fluid and having a conveying and dosing unit for conveying the fluid from the reservoir to the discharge opening of a discharge catheter. In known devices of this type the reservoir is held at a reference pressure which is lower in comparison to the pressure at the fluid discharge location in order in case of a defect, to prevent fluid from flowing out. According to the present disclosure pressure equalization between the inside space of the housing and the environment is effected for example by a hydrophobic or hydrophilic diaphragm with pores of a specific size or a …