William Castle DeVries is an American cardiothoracic surgeon, mainly known for the first transplant of a TAH using the Jarvik-7 model.
The heart is a muscular organ in most animals, which pumps blood through the blood vessels of the circulatory system. The pumped blood carries oxygen and nutrients to the body, while carrying metabolic waste such as carbon dioxide to the lungs. In humans, the heart is approximately the size of a closed fist and is located between the lungs, in the middle compartment of the chest.
An artificial heart is a device that replaces the heart. Artificial hearts are typically used to bridge the time to heart transplantation, or to permanently replace the heart in the case that a heart transplant is impossible. Although other similar inventions preceded it from the late 1940s, the first artificial heart to be successfully implanted in a human was the Jarvik-7 in 1982, designed by a team including Willem Johan Kolff and Robert Jarvik.
Robert Koffler Jarvik, M.D. is an American scientist, researcher and entrepreneur known for his role in developing the Jarvik-7 artificial heart.
Mitral regurgitation (MR), mitral insufficiency, or mitral incompetence is a form of valvular heart disease in which the mitral valve does not close properly when the heart pumps out blood. It is the abnormal leaking of blood backwards from the left ventricle, through the mitral valve, into the left atrium, when the left ventricle contracts, i.e. there is regurgitation of blood back into the left atrium. MR is the most common form of valvular heart disease.
The Fontan procedure or Fontan–Kreutzer procedure is a palliative surgical procedure used in children with univentricular hearts. It involves diverting the venous blood from the inferior vena cava (IVC) and superior vena cava (SVC) to the pulmonary arteries without passing through the morphologic right ventricle; i.e., the systemic and pulmonary circulations are placed in series with the functional single ventricle. The procedure was initially performed in 1968 by Francis Fontan and Eugene Baudet from Bordeaux, France, published in 1971, simultaneously described in 1971 by Guillermo Kreutzer from Buenos Aires, Argentina, and finally published in 1973.
AbioCor was a total artificial heart (TAH) developed by the Massachusetts-based company AbioMed. It was fully implantable within a patient, due to a combination of advances in miniaturization, biosensors, plastics and energy transfer. The AbioCor ran on a rechargeable source of power. The internal battery was charged by a transcutaneous energy transmission (TET) system, meaning that no wires or tubes penetrated the skin, reducing the risk of infection. However, because of its size, this heart was only compatible with men who had a large frame. It had a product life expectancy of 18 months.
Aortic valve replacement is a procedure whereby the failing aortic valve of a patient's heart is replaced with an artificial heart valve. The aortic valve may need to be replaced because:
The Rastelli procedure is an open heart surgical procedure developed by Italian physician and cardiac surgery researcher, Giancarlo Rastelli in 1967 at the Mayo Clinic and involves using a pulmonary or aortic homograft conduit to relieve pulmonary obstruction in double outlet right ventricle with pulmonary stenosis.
An artificial heart valve is a one-way valve implanted into a person's heart to replace a valve that is not functioning properly. Artificial heart valves can be separated into three broad classes: mechanical heart valves, bioprosthetic tissue valves and engineered tissue valves.
Mitral valve repair is a cardiac surgery procedure performed by cardiac surgeons to treat stenosis (narrowing) or regurgitation (leakage) of the mitral valve. The mitral valve is the "inflow valve" for the left side of the heart. Blood flows from the lungs, where it picks up oxygen, through the pulmonary veins, to the left atrium of the heart. After the left atrium fills with blood, the mitral valve allows blood to flow from the left atrium into the heart's main pumping chamber called the left ventricle. It then closes to keep blood from leaking back into the left atrium or lungs when the ventricle contracts (squeezes) to push blood out to the body. It has two flaps, or leaflets, known as cusps.
Willem Johan Kolff, also known as Pim Kolff, was a pioneer of hemodialysis as well as in the field of artificial organs. Willem is a member of the Kolff family, an old Dutch patrician family. He made his major discoveries in the field of dialysis for kidney failure during the Second World War. He emigrated in 1950 to the United States, where he obtained US citizenship in 1955, and received a number of awards and widespread recognition for his work.
Vladimir Petrovich Demikhov was a Soviet scientist and organ transplantation pioneer, who performed several transplants in the 1940s and 1950s, including the transplantation of a heart into an animal and a heart–lung replacement in an animal. He is also well known for his dog head transplants, which he conducted during the 1950s, resulting in two-headed dogs. This ultimately led to the head transplants in monkeys by Dr. Robert White, who was inspired by Demikhov's work.
Mitral valve replacement is a procedure whereby the diseased mitral valve of a patient's heart is replaced by either a mechanical or tissue (bioprosthetic) valve.
A membrane oxygenator is a device used to add oxygen to, and remove carbon dioxide from the blood. It can be used in two principal modes: to imitate the function of the lungs in cardiopulmonary bypass (CPB), and to oxygenate blood in longer term life support, termed extracorporeal membrane oxygenation (ECMO). A membrane oxygenator consists of a thin gas-permeable membrane separating the blood and gas flows in the CPB circuit; oxygen diffuses from the gas side into the blood, and carbon dioxide diffuses from the blood into the gas for disposal.
O. H. "Bud" Frazier is a heart surgeon and director of cardiovascular surgery research at the Texas Heart Institute (THI), best known for his work in mechanical circulatory support (MCS) of failing hearts using left ventricular assist devices (LVAD) and total artificial hearts (TAH).
Emmaville is a town on the Northern Tablelands in the New England region of New South Wales, Australia. It is in the Glen Innes Severn Council district.
The University of Utah School of Medicine is located on the upper campus of the University of Utah in Salt Lake City, Utah. It was founded in 1905 and is currently the only MD-granting medical school in the state of Utah.
Jack Greene Copeland is an American cardiothoracic surgeon, who has established procedures in heart transplantation including repeat heart transplantation, the implantation of total artificial hearts (TAH) to bridge the time to heart transplant, innovations in left ventricular assist devices (LVAD) and the technique of "piggybacking" a second heart in a person, while leaving them the original.
Keith Reemtsma was an American transplant surgeon, best known for the cross-species kidney transplantation operation from chimpanzee to human in 1964. With only the early immunosuppressants and no long-term dialysis, the female recipient survived nine months, long enough to return to work.
