An arthroscopic method and apparatus for implanting a suture anchor into tissue using a cannulated drill guide having an indented tip. Ligament tissue at a shoulder repair site is penetrated with a cannulated drill guide and removable trochar obturator. The obturator is removed, and the indented tip...http://www.google.es/patents/US5993451?utm_source=gb-gplus-sharePatente US5993451 - Cannulated suture anchor drill guide
