The invention concerns a device to be implanted in an accessible subcutaneous zone of the body of a patient in order to constitute a chronic injection site of a liquid, in particular a therapeutant. This device includes an injection chamber (12) bounded by an integral rigid case (11) provided for that...http://www.google.com.au/patents/US4710167?utm_source=gb-gplus-sharePatent US4710167 - Implantable device for chronically injecting a substance, in particular a therapeutant
