An implantable fluid delivery device for dispensing metered amounts of liquid medication when a pump assembly within its casing is operated by finger pressure applied to a central target zone of the casing's top wall. The top wall also includes an injection site spaced from the central target zone for...http://www.google.de/patents/US4898585?utm_source=gb-gplus-sharePatent US4898585 - Implantable patient-activated fluid delivery device with bolus injection port
