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Titolo:
Design and evaluation of a single-pivot supported centrifugal blood pump
Autore:
Yoshino, M; Uemura, T; Takahashi, T; Watanabe, T; Hoshi, H; Ohuchi, K; Nakamura, M; Fujita, H; Sakamoto, T; Takatani, S;
Indirizzi:
Tokyo Med & Dent Univ, Dept Artificial Organs, Inst Biomat & Bioengn, Chiyoda Ku, Tokyo, Japan Tokyo Med & Dent Univ Tokyo Japan t & Bioengn, Chiyoda Ku, Tokyo, Japan Nihon Univ, Coll Sci & Technol, Dept Mech Engn, Tokyo 102, Japan Nihon Univ Tokyo Japan 102 i & Technol, Dept Mech Engn, Tokyo 102, Japan Shibaura Inst Technol, Dept Engn Mech, Tokyo 108, Japan Shibaura Inst Technol Tokyo Japan 108 , Dept Engn Mech, Tokyo 108, Japan Tokyo Denki Univ, Fac Sci & Engn, Dept Appl Elect Engn, Tokyo 101, Japan Tokyo Denki Univ Tokyo Japan 101 Dept Appl Elect Engn, Tokyo 101, Japan Tokyo Med & Dent Univ, Inst Biomat & Bioengn, Dept Thorac Organ Replacement, Tokyo, Japan Tokyo Med & Dent Univ Tokyo Japan horac Organ Replacement, Tokyo, Japan
Titolo Testata:
ARTIFICIAL ORGANS
fascicolo: 9, volume: 25, anno: 2001,
pagine: 683 - 687
SICI:
0160-564X(200109)25:9<683:DAEOAS>2.0.ZU;2-F
Fonte:
ISI
Lingua:
ENG
Soggetto:
MAGNETIC SUSPENSION; SYSTEM;
Keywords:
single-pivot bearing system; centrifugal blood pump; ventricular assist device; sealless continuous flow pump;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
12
Recensione:
Indirizzi per estratti:
Indirizzo: Takatani, S Tokyo Med & Dent Univ, Dept Artificial Organs, Inst Biomat & Bioengn, Chiyoda Ku, 2-3-10 Surugadai, Tokyo, Japan Tokyo Med & Dent Univ 2-3-10 Surugadai Tokyo Japan yo, Japan
Citazione:
M. Yoshino et al., "Design and evaluation of a single-pivot supported centrifugal blood pump", ARTIF ORGAN, 25(9), 2001, pp. 683-687

Abstract

In order to develop a centrifugal blood pump that meets the requirements of a long-term, implantable circulatory support device, in this study a singe-pivot bearing supported centrifugal blood pump was designed to evaluate its basic performance. The single-pivot structure consisted of a ceramic ball male pivot mounted on the bottom surface of the impeller and a polyethylene female pivot incorporated in the bottom pump casing. The follower magnet mounted inside the impeller was magnetically coupled to the driver magnetmounted on the shaft of the direct current brushless motor. As the motor rotated, the impeller rotated supported entirely by a single-pivot bearing system. The static pump performance obtained in the mock circulatory loop revealed an acceptable performance as a left ventricular assist device in terms of flow and head pressure. The pump flow of 5 L/min against the head pressure of 100 mm Hg was obtained at rotational speeds of 2,000 to 2,200 rpm. The maximum pump flow was 9 L/min with 2,200 rpm. The maximum electrical-to-hydraulic power conversion efficiency was around 14% at pump flows of 4 to 5 L/min. The stability of the impeller was demonstrated at the pump rpm higher than 1,400 with a single-pivot bearing without an additional support at its top. The single-pivot supported centrifugal pump can provide adequate flow and pressure as a ventricular assist device, but its mechanical stability and hemolytic as well as thrombotic performances must be tested priorto clinical use.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/07/20 alle ore 23:22:17