Implantable infusion pump with constant delivery rate

摘要

Implantable, infusion pump (1) for dosed supply of medicaments to human patients has a pump chamber with a bottom section (2) connected to a top section (3), with a gas impermeable flexible partition (6) between them. The first chamber, between the top section (3) and partition (6) is used for storing medicinal solns. and has a filling port (12) sealed by puncturable septum(s) and is connected to output catheter, opt. through a reducing device. The second chamber, between the bottom section (2) and partition (6) is a pressure chamber (8) taking a propellant. The novelty is that the partition (6) is a domed metal foil following the internal contour of the top section (3).