The present invention discloses a multi-access cannula for use in a variety of surgical procedures, particularly for use in the course of performing conventional open-chest and peripheral access cardiopulmonary bypass (CPB). The multi-access cannula is capable of being inserted through a single puncture...http://www.google.ca/patents/US6099506?utm_source=gb-gplus-sharePatent US6099506 - Introducer and perfusion cannula
