Development of a totally implantable biventricular bypass centrifugal blood pump system Yukihiko Nosé, MD, PhD, Kin-ichi Nakata, MD, PhD, Masaharu Yoshikawa,

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Presentation transcript:

Development of a totally implantable biventricular bypass centrifugal blood pump system Yukihiko Nosé, MD, PhD, Kin-ichi Nakata, MD, PhD, Masaharu Yoshikawa, MD, PhD, George V Letsou, MD, Akira Fujisawa, Ernst Wolner, MD, Heinrich Schima, PhD The Annals of Thoracic Surgery Volume 68, Issue 2, Pages 775-779 (August 1999) DOI: 10.1016/S0003-4975(99)00528-7

Fig 1 Two centrifugal blood pumps are implanted in the abdominal wall, directly under the diaphragm. The pump shown on the left is the right ventricular assist device (RVAD), and the pump shown on the right side is the left ventricular assist device (LVAD). (TETS = transcutaneous energy transmission system.) The Annals of Thoracic Surgery 1999 68, 775-779DOI: (10.1016/S0003-4975(99)00528-7)

Fig 2 A picture of the C1E3 centrifugal pump. At the top of the pump housing, the top female bearing housing is seen. The eccentric inlet port of the pump is located on the right side of the bearing housing. The Annals of Thoracic Surgery 1999 68, 775-779DOI: (10.1016/S0003-4975(99)00528-7)

Fig 3 The impeller of the C1E3 pump. The white ceramic male bearing shaft is shown at the center. The impeller spins supported by the top and bottom male bearings in the housing of the pump. The Annals of Thoracic Surgery 1999 68, 775-779DOI: (10.1016/S0003-4975(99)00528-7)

Fig 4 The PI601 pump–actuator package is shown on the right. The hermetically sealed actuator subsystem is also shown at the left. The Annals of Thoracic Surgery 1999 68, 775-779DOI: (10.1016/S0003-4975(99)00528-7)

Fig 5 The PI601 right ventricular assist device (at the top) and the PI601 left ventricular assist device (at the bottom). The Annals of Thoracic Surgery 1999 68, 775-779DOI: (10.1016/S0003-4975(99)00528-7)

Fig 6 The titanium permanently implantable centrifugal gyro pump model PI702. The Annals of Thoracic Surgery 1999 68, 775-779DOI: (10.1016/S0003-4975(99)00528-7)

Fig 7 Platelet adhesion studies. The smooth surface Ti6Al4V shows the lowest level of platelet adhesion among all test specimens. The Annals of Thoracic Surgery 1999 68, 775-779DOI: (10.1016/S0003-4975(99)00528-7)