Researchers at UCI have developed a minimally invasive mechanism to help deliver and implant a cardiac assist device inside the body to help patients with heart failure.
·Delivery system for cardiac assist devices
·Guide, position, release, and secure a whole-heart assist device around the heart
·Minimally invasive delivery mechanism
·Passive and active grip features help secure device to heart
·User-friendly controls to guide and release device
Successful delivery and implantation of medical devices into the body is a crucial for effective and positive outcomes. Specifically, implanting cardiac assist devices commonly require open heart surgery which is time intensive, invasive, and requires a lengthy recovery period. Replacement of heart valves can require open heart surgery, however, more minimally invasive procedures using a catheter mechanism for device delivery are becoming more common.
Investigators at UCI have previously developed a whole-heart assist device comprised of an implantable, flexible sleeve that wraps externally around the in-tact heart to provide additional pumping for heart failure patients. The UCI team has designed a minimally invasive, percutaneous delivery system to guide, position, release and secure the cardiac device around the heart, similar to the catheter mechanism for delivering heart valve replacements. The cardiac sleeve device is collapsed and attached to rod-like delivery arms that are contained within a delivery sheath. After making a small incision along the skin near the pericardium (the sac surrounding the heart), the sheath is inserted. Manual controls near the backend of the sheath allow for advancing of the delivery arms. As the delivery arms advance, the cardiac sleeve moves out of the sheath and expands for placement around the heart. Passive grip features along the basal and apical rings of the sleeve secure positioning around the heart; additional help is provided from active grip features and suture mechanisms that can be triggered when the device released. This unique delivery system allows doctors to implant these flexible cardiac assist devices in a minimally invasive way and offers heart failure patients alternatives to intensive surgeries.
Description, procedure, and drawings of delivery system are outlined.
|Patent Cooperation Treaty||Reference for National Filings||2020236750A1||11/26/2020||2019-678|