A method and apparatus for accessing the pericardial space which provides for stable short term or long term placement of a delivery catheter or cannula having its distal most end located in the pericardial space. The catheter or cannula may be introduced into the pericardial space either transvenously...http://www.google.co.uk/patents/US6613062?utm_source=gb-gplus-sharePatent US6613062 - Method and apparatus for providing intra-pericardial access
