An apparatus for delivering a clip includes an introducer sheath including an outer surface extending between its proximal and distal ends, and a hub on the proximal end that includes spacer elements spaced away from the outer surface. An annular clip includes a plurality of tines extending from its...http://www.google.se/patents/US8007512?utm_source=gb-gplus-sharePatent US8007512 - Plunger apparatus and methods for delivering a closure device
