A device for driving a needle into the tissues of a patient, the needle being a dart-like point attached by a shank to a head, and the device including a body having a bore therethrough, the needle occupying a zone of the bore near its outlet, a sliding pusher member in the bore having a split at one...http://www.google.fr/patents/US4139011?utm_source=gb-gplus-shareBrevet US4139011 - Device for driving a needle into a patient
