Surgical, medical, and veterinary apparatus and instruments, namely, for use in vascular and cardiovascular surgery; Medical devices, namely, intravascular implants made of artificial materials; medical devices for treating congestive heart failure; medical devices for treating pulmonary hypertension; surgical implants comprised of artificial materials for use in vascular, cardiovascular and endovascular surgery and interventions; medical apparatus and instruments, namely, cardiac implants comprised of artificial material for implantation between heart chambers of a patient; medical devices for use in interventional procedures, namely, implantable medical devices which are particularly well-suited for delivery through a catheter for implantation in a heart of a patient, vessels and other places in a body of a patient, all of the aforementioned consisting of artificial and natural, nonliving materials