Apparatus and methods for intraoperatively performing surgery to create transmural channels in tissue, for example, as in transmyocardial revascularization, are provided using a device including a mechanical end effector and means for stabilizing the end effector in contact with the tissue. The end effector...http://www.google.com.au/patents/US5899915?utm_source=gb-gplus-sharePatent US5899915 - Apparatus and method for intraoperatively performing surgery