Devices, systems and methods are provided for tissue approximation and repair at treatment sites, particularly in those procedures requiring minimally-invasive or endovascular access to remote tissue locations. Fixation devices are provided to fix tissue in approximation with the use of distal elements....http://www.google.com/patents/US20060089671?utm_source=gb-gplus-sharePatent US20060089671 - Fixation devices for variation in engagement of tissue
