A surgical tool holder that includes a holding member with a clamping jaw, which is movable between open and clamping positions. A gripping member is configured to supportingly grip a surgical tool and is selectively placed in a rotatable or fixed association with the holding member. Engagement portions...http://www.google.es/patents/US7857271?utm_source=gb-gplus-sharePatente US7857271 - Surgical tool holder with engagement portions