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Sealing performance of a magnetic fluid seal for rotary blood pumps.
- Source :
-
Artificial organs [Artif Organs] 2009 Sep; Vol. 33 (9), pp. 770-3. - Publication Year :
- 2009
-
Abstract
- A magnetic fluid (MF) for a rotary blood pump seal enables mechanical contact-free rotation of the shaft and, hence, has excellent durability. The performance of a MF seal, however, has been reported to decrease in liquids. We have developed a MF seal that has a "shield" mechanism and a new MF with a higher magnetization of 47.9 kA/m. The sealing performance of the MF seal installed in a rotary blood pump was studied. Under the condition of continuous flow, the MF seal remained in perfect condition against a pressure of 298 mm Hg (pump flow rate: 3.96 L/min). The seal was also perfect against a pressure of 170 mm Hg in a continuous flow of 3.9 L/min for 275 days. We have developed a MF seal that works in liquid against clinically used pressures. The MF seal is promising as a shaft seal for rotary blood pumps.
Details
- Language :
- English
- ISSN :
- 1525-1594
- Volume :
- 33
- Issue :
- 9
- Database :
- MEDLINE
- Journal :
- Artificial organs
- Publication Type :
- Academic Journal
- Accession number :
- 19775271
- Full Text :
- https://doi.org/10.1111/j.1525-1594.2009.00899.x