cardiac valve surgery
Category C - full version without watermark 720x576 (check terms and conditions at www.teledesign.de) The embed version with watermark is free of charge. Two catheter-based delivery systems are being developed so the prosthesis can be placed at the aortic annulus retrograde in a transfemoral approach, or antegrade in a transapical approach. Both systems provide easy maneuverability, positioning and repositioning capabilities. The systems can deploy the prosthesis with the heart beating, without the use of cardiopulmonary bypass, disruption of blood flow or rapid pacing. In the first deployment step, the feelers of the JenaClip stent are unsheathed from the catheter to allow the physician to assure proper positioning. The feelers can be fully retracted back into the catheter sheath for repositioning and re-deployment, if necessary. Once the feelers are determined to be in the proper position, the rest of the prosthesis can be deployed in two distinct steps to securely anchor the valve base in the native annulus and to be released from the delivery system.