| Presentation | 2006-06-23 Application of a magnetic fluid seal to rotary blood pumps Daisuke SAKOTA, Yoshinori MITAMURA, Kazumitsu SEKINE, Tetsuya YANO, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | A magnetic fluid seal is exellent in durability because this enables contact free rotation of the shaft without fractional heat and material wears. However, when the seal is applied to a rotary blood pump, the seal fails in a week. The reason has been considered to be due to instability of the magnetic fluid sealing liquid interface induced by Kelvin-Helmholtz problem. The problem is liquid-to-liquid (Magnetic fluid/Sealing liquid) interface instability phenomenon by relative flow velocity difference of two liquids with different density. We developed for the magnetic fluid seal without the Kelvin-Helmholtz problem at relative flow velocity difference within 1.57m/s. However, when the seal, was applied to a rotary blood pump, the seal failed in 6 days. We therefore developed the magnetic fluid seal with "a shield" which minimized the effect of the rotary pump on the sealing liquid velocity. When the seal was applied to a rotary blood pump, the seal with "the shield" showed better durability (a life of 62 days). |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Magnetic fluid / Rotary blood pump / Kelvin-Helmholtz instability / Shield |
| Paper # | MBE2006-26 |
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| Conference Information | |
| Committee | MBE |
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| Conference Date | 2006/6/16(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | ME and Bio Cybernetics (MBE) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Application of a magnetic fluid seal to rotary blood pumps |
| Sub Title (in English) | |
| Keyword(1) | Magnetic fluid |
| Keyword(2) | Rotary blood pump |
| Keyword(3) | Kelvin-Helmholtz instability |
| Keyword(4) | Shield |
| 1st Author's Name | Daisuke SAKOTA |
| 1st Author's Affiliation | Institute of Biomaterials and Bioengineering Tokyo Medical and Dental University() |
| 2nd Author's Name | Yoshinori MITAMURA |
| 2nd Author's Affiliation | Hokkaido University |
| 3rd Author's Name | Kazumitsu SEKINE |
| 3rd Author's Affiliation | Institute of Development, Aging and Cancer, Tohoku University |
| 4th Author's Name | Tetsuya YANO |
| 4th Author's Affiliation | Akita Prefectural University |
| Date | 2006-06-23 |
| Paper # | MBE2006-26 |
| Volume (vol) | vol.106 |
| Number (no) | 127 |
| Page | pp.pp.- |
| #Pages | 4 |
| Date of Issue | |