There is disclosed a draining cannula to be connected with the left atrium which comprises a tip portion (A), a curvature portion (B) connected with said tip portion and a body tubular portion (C) connected with said curvature portion. The length and the outer diameter of said cannula is sufficient for...http://www.google.co.uk/patents/US5314418?utm_source=gb-gplus-sharePatent US5314418 - Cannula
