An apparatus for cutting and removing a tissue is described, which includes a rotational axle device, at least one non-mechanical cutting device radially disposed from the rotational axle device, at least one device capable of protecting the heart ventricle, and a first collapsible plate. Also described...http://www.google.se/patents/US20040116951?utm_source=gb-gplus-sharePatent US20040116951 - Apparatus and method for cutting a heart valve
