心臓弁位置埋込型人工血液ポンプ（Ｖａｌｖｏ‐Ｐｕｍｐ）の開発

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  • Development of an artificial blood pump implanted at the heart valve position (valvo-pump).

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The valvo-pump, an axial nonpulsatile blood pump implanted at the heart valve position, has been developed. The valvo-pump consists of an impeller and a motor which are encased in a housing. An impeller with 5 vanes (22.0 mm in diameter) is used. The impeller is connected to a samarium-cobalt-rare-earth magnet direct current (DC) brushless motor measuring 21.3 mm in diameter and 24.9 mm in length. Sealing is achieved by means of a ferrof luidic seal. A pump flow of 16.1 L/min was obtained at a pump differential pressure of 7.7 kPa (58 mmHg), and a flow of 5.0 L/min at 18.4 kPa (138 mmHg). Sealing was kept perfect against a pressure of 29.3 kPa (220 mmHg) at 9000 RPM.

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  • 人工臓器

    人工臓器 21 (2), 567-571, 1992

    一般社団法人 日本人工臓器学会

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