A headed bioabsorbable tissue anchor has a continuous thread spiraling around a tapering central core. At the distal end, the headed bioabsorbable tissue anchor terminates in a flat point. At the proximal end, the bioabsorbable tissue anchor has a flat, disk-shaped head for engaging tissue, and slots...http://www.google.es/patents/US6616665?utm_source=gb-gplus-sharePatente US6616665 - Method of rotator cuff repair
