Implantable Centrifugal Blood Pump With Dual Impeller and Double Pivot Bearing System: Electromechanical Actuator, Prototyping, and Anatomical Studies

2011 ◽  
Vol 35 (5) ◽  
pp. 437-442 ◽  
Author(s):  
Eduardo Bock ◽  
Pedro Antunes ◽  
Tarcisio Leao ◽  
Beatriz Uebelhart ◽  
Jeison Fonseca ◽  
...  
Keyword(s):  
Blood Pump ◽  
Centrifugal Blood Pump ◽  
Anatomical Studies ◽  
Electromechanical Actuator ◽  
Pivot Bearing ◽  
Bearing System

Flow Visualization of a Centrifugal Blood Pump with Double Pivot Bearing

2002 ◽  
Vol 2002 (0) ◽  
pp. 183-184
Author(s):  
Takayuki KODAMA ◽  
Takashi YAMANE ◽  
Hiroshi KAWAMURA ◽  
Yoshiro YAMAMOTO ◽  
Toshiyuki SHINOHARA
Keyword(s):  
Flow Visualization ◽  
Blood Pump ◽  
Centrifugal Blood Pump ◽  
Pivot Bearing

20315 Development of a Disposable Extracorporeal Centrifugal Blood Pump with Magnetic Bearing System

2009 ◽  
Vol 2009.15 (0) ◽  
pp. 213-214
Author(s):  
Wataru Hijikata ◽  
Pai Chi Nan ◽  
Tadahiko Shinshi ◽  
Akira Shimokohbe ◽  
Takeshi Someya ◽  
...  
Keyword(s):  
Magnetic Bearing ◽  
Blood Pump ◽  
Centrifugal Blood Pump ◽  
Bearing System

P-MB-05 A PM-EM TYPE MAGNETIC BEARING SYSTEM FOR A CENTRIFUGAL BLOOD PUMP

2003 ◽  
Vol 2003 (0) ◽  
pp. 377-378
Author(s):  
Tadahiko SHINSHI ◽  
Daisaku NISHINAKA ◽  
Junichi ASAMA ◽  
Hiroyuki KATAOKA ◽  
Setsuo TAKATANI ◽  
...  
Keyword(s):  
Magnetic Bearing ◽  
Blood Pump ◽  
Centrifugal Blood Pump ◽  
Bearing System

scholarly journals Development of Centrifugal Blood Pump with Compact Magnetic Bearing System

2004 ◽  
Vol 16 (Supplement) ◽  
pp. 97-98
Author(s):  
H. Hoshi ◽  
T. Yasuda ◽  
H. Kataoka ◽  
K. Ohuchi ◽  
M. Nakamura ◽  
...  
Keyword(s):  
Magnetic Bearing ◽  
Blood Pump ◽  
Centrifugal Blood Pump ◽  
Bearing System

A Pivot Bearing-Supported Centrifugal Pump for a Long-Term Assist Heart

1997 ◽  
Vol 20 (4) ◽  
pp. 222-228 ◽  
Author(s):  
T. Nakazawa ◽  
Y. Ohara ◽  
R. Benkowski ◽  
K. Makinouchi ◽  
Y. Takami ◽  
...  
Keyword(s):  
Cardiopulmonary Bypass ◽  
Centrifugal Pump ◽  
Thrombus Formation ◽  
Left Ventricular ◽  
Production Model ◽  
Blood Pump ◽  
Preliminary Evaluation ◽  
Centrifugal Blood Pump ◽  
Normal Ranges ◽  
Pivot Bearing

A pivot bearing-supported centrifugal blood pump has been developed. It is a compact, cost effective, and anti-thrombogenic pump with anatomical compatibility. A preliminary evaluation of five paracorporeal left ventricular assist studies were performed on pre-conditioned bovine (70-100 kg), without cardiopulmonary bypass and aortic cross-clamping. The inflow cannula was inserted into the left ventricle (LV) through the apex and the outflow cannula affixed with a Dacron vascular graft was anastomosed to the descending aorta. All pumps demonstrated trouble free performance over a two-week screening period. Among these five studies, three implantations were subjected for one month system validation studies. All the devices were trouble free for longer than 1 month. (35, 34, and 31 days). After achieving one month studies, all experiments were terminated. There was no evidence of device induced thrombus formation inside the pump. The plasma free hemoglobin levels were within normal ranges throughout all experiments. As a consequence of these studies, a mass production model C1E3 of this pump was fabricated as a short-term assist pump. This pump has a Normalized Index of Hemolysis of 0.0007 mg/100L and the estimated wear life of the impeller bearings is longer than 8 years. The C1E3 will meet the clinical requirements as a cardiopulmonary bypass pump. For the next step, a miniaturized pivot bearing centrifugal blood pump PI-601 has been developed for use as a permanently implantable device after design optimization. The evolution from C1E3 to the PI-601 converts this pivot bearing centrifugal pump as a totally implantable centrifugal pump. A pivot bearing centrifugal pump will become an ideal assist pump for the patients with failing heart.

SINGLE PIVOT BEARING SUPPORTED CENTRIFUGAL BLOOD PUMP

ASAIO Journal ◽  
2002 ◽  
Vol 48 (2) ◽  
pp. 165
Author(s):  
M Yoshino ◽  
T Masuda ◽  
A Kikuchi ◽  
K Takahashi ◽  
N Watanabe ◽  
...  
Keyword(s):  
Blood Pump ◽  
Centrifugal Blood Pump ◽  
Pivot Bearing

Flow Visualization of the Field Inside the Single Pivot Bearing Supported Centrifugal Blood Pump

2002 ◽  
Vol 2002.14 (0) ◽  
pp. 201-202
Author(s):  
Nobuo WATANABE ◽  
M. YOSHINO ◽  
K. TAKAHASHI ◽  
T. MASUDA ◽  
A. KIKUCHI ◽  
...  
Keyword(s):  
Flow Visualization ◽  
Blood Pump ◽  
Centrifugal Blood Pump ◽  
Pivot Bearing
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