Baylor Gyro Pump: A Completely Seal-less Centrifugal Pump Aiming for Long-Term Circulatory Support
| Autor: | Kazumi Mizuguchi, Kozo Naito, Julie Glueck, Yasuhisa Ohara, Setsuo Takatani, Yukihiko Nosé, Kenzo Makinouchi, George P. Noon, George Damm, Yukihiko Orime, Ichiro Sakuma, Kimitaka Tasai |
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| Rok vydání: | 2008 |
| Předmět: |
Time Factors
Materials science Biomedical Engineering Medicine (miscellaneous) Bioengineering Hemolysis DC motor Biomaterials Impeller Control theory Animals Humans Models Cardiovascular Equipment Design General Medicine Centrifugal pump Models Structural Blood Motor efficiency Heat generation Bovine blood Circulatory system Right heart Cattle Female Heart-Assist Devices |
| Zdroj: | Artificial Organs. 17:599-604 |
| ISSN: | 1525-1594 0160-564X |
| DOI: | 10.1111/j.1525-1594.1993.tb00601.x |
| Popis: | A seal-less centrifugal pump aiming for long-term circulatory support has been developed. In this model, shaft seals that cause thrombus formation and blood leakage were eliminated. A brushless direct current motor was incorporated as a driving unit, and pivot bearings were used to support the impeller. With reference to its motor-driven system, this pump was named the M-Gyro Pump. The first model (M1) yielded an index of hemolysis of 0.005 g/100 L using bovine blood and demonstrated satisfactory performance as a right heart assist for 2 days (4 L/min, 60 mm Hg, 1,800 rpm). The second model (M2) has been developed for left heart assist by employing a stronger motor. The pump capacity was improved to 6 L/min against 240 mm Hg at 1,800 rpm, but significant heat generation was observed. By optimization of motor efficiency, the M2 model can be improved to meet the requirements of a pump for left heart assist. |
| Databáze: | OpenAIRE |
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