Infusion device intended for implantation in a living body

Details Infusion device intended for implantation in a living body Infusion device intended for implantation in a living body

A - Human Necessities

61

M

128/80

A61M 5/00 (2006.01) A61M 5/142 (2006.01)

Patent

CA 1187366

ABSTRACT OF THE DISCLOSURE 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 environ- ment is effected for example by a hydrophobic or hydrophilic diaphragm with pores of a specific size or a diffusion diaphragm in combination with a pres- sure control valve in the wall of the device housing.

412170

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