Implantable dosing device

US4140121A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Dieter Kuhl · Möhrendorf, DE
• Gunter Luft · Achern, DE
• Konrad Mund
• Gerhard Richter · Kreuztal, DE
• Ferdinand V. Sturm · Erlangen, DE

Key dates

• Filing date: Jun 2, 1977
• Grant date: Feb 20, 1979
• Expiry date: Jun 2, 1997

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M5/14276
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

The invention relates to an implantable dosing device for the continuous, controllable release of medication in the human or animal body, comprising a medicine reservoir of variable volume and a liquid chamber which is tensionally connected to the medicine reservoir and the volume of which can be varied by liquid which is transported through an ion exchange diaphragm by electro-osmosis due to an electric field between two electrodes. According to the invention, the electrodes in such an implantable dosing device are hydrogen electrodes which are connected to each other by a line for hydrogen, and means are further provided for compensating hydrogen losses.