Masuzawa, T Onuma, H Kim, SJ Okada, Y 2024-01-21T10:32:29Z 2024-01-21T10:32:29Z 2021-09-01 2002-07 1058-2916 https://pubs.kist.re.kr/handle/201004/139427 A magnetically suspended centrifugal blood pump with a self bearing motor has been developed for long-term ventricular assistance. A rotor of the self bearing motor is actively suspended and rotated by an electromagnetic field without mechanical bearings. Radial position of the rotor is controlled actively, and axial position of the rotor is passively stable within the thin rotor structure. An open impeller and a semiopened impeller were examined to determine the best impeller structure. The outer diameter and height of the impeller are 63 and 34 mm, respectively. Both the impellers indicated similar pump performance. Single volute and double volute structures were also tested to confirm the performance of the double volute. Power consumption for levitation and radial displacement of the impeller with a rotational speed of 1,500 rpm were 0.7 W and 0.04 mm in the double volute, while those in the single volute were 1.3 W and 0.07 mm, respectively. The stator of the self bearing motor was redesigned to avoid magnetic saturation and improve motor performance. Maximum flow rate and pressure head were 9 L/min and 250 mm Hg, respectively. The developed magnetically suspended centrifugal blood pump is a candidate for an implantable left ventricular assist device. English LIPPINCOTT WILLIAMS & WILKINS IMPELLER DESIGN Magnetically suspended centrifugal blood pump with a self bearing motor Article 10.1097/00002480-200207000-00019 1 ASAIO JOURNAL, v.48, no.4, pp.437 - 442 ASAIO JOURNAL 48 4 437 442 scie scopus 000176809600019 Engineering, Biomedical Transplantation Engineering Transplantation Article IMPELLER DESIGN