A tacker instrument for laparoscopic applications fits within a cannula and incorporates within a sleeve a positioning and driving system coupled to a tack holder mechanism at the distal end. The tack is held unexposed during entry but then may be extended to a predetermined position for embedment, with...http://www.google.co.uk/patents/US5458608?utm_source=gb-gplus-sharePatent US5458608 - Laparoscopic instruments and methods
