Abstract
The helical flow pump (HFP) was invented to develop a total artificial heart at the University of Tokyo in 2005. The HFP consists of the multi-vane impeller involving rotor magnets, a motor stator and pump housing having double-helical volutes. To investigate the characteristics of the HFP, computational fluid dynamics analysis was performed. Validation of the computational model was performed with the data of the actual pump. A control computational model in which the vane area corresponded approximately to that of the actual pump was designed for the parametric study. The parametric study was performed varying the vane height, vane width and helical volute pitch. When the vane height was varied from 0.5 to 1.5 times that of the control computational model, the H–Q (pressure head vs. flow) and efficiency curves were translated in parallel with the vane height. When the vane height was two and three times that of the control computational model, the profile of these curves changed. From the results, the best proportion for the vane was considered to be a vane height between 1.5 and 2 times the vane width. The effect of vane width was not very strong compared to that of the vane height. A similar tendency in vane height was observed by varying the helical volute pitch. The best helical volute-pitch size is considered to be between 1.5 and 2 times the vane width. Although further study is necessary to determine the best values for these parameters, the characteristics of the pump parameters in the HFP could be approximately clarified.
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References
DeBakey ME. A miniature implantable axial flow ventricular assist device. Ann Thorac Surg. 1999;68:637–40.
Kormos RL, Borovetz HS, Litwak K, Antaki JF, Poirier VL, Butler KC. HeartMate II left ventricular assist system: from concept to first clinical use. Ann Thorac Surg. 2001;71(3 Suppl):S116–20.
Frazier OH, Shah NA, Myers TJ, Robertson KD, Gregoric ID, Delgado R. Use of the Flowmaker (Jarvik 2000) left ventricular assist device for destination therapy and bridging to transplan- tation. Cardiology. 2004;101:111–6.
Schmid C, Tonny D, Tjan TDT, Etz C, Schmidt CS, Wenzelburger F, Wilhelm M, Rothenburger M, Drees G, Scheld HH. First clinical experience with the Incor left ventricular assist device. J Heart Lung Transpl. 2005;24:1188–94.
Jeffrey LA, Daniel T, Michael A, Carlos R. Design concepts and principle of operation of the HeartWare ventricular assist system. ASAIO J. 2010;56:285–9.
Yamazaki K, Kihara S, Akimoto T, Tagusari O, Kawai A, Umezu M, Tomioka J, Kormos RL, Griffith BP, Kurosawa H. EVAHEART: an implantable centrifugal blood pump for long-term circulatory support. Jpn J Thorac Cardiovasc Surg. 2002;50:461–5.
Nojiri C, Kijima T, Maekawa J, Horiuchi K, Kido T, Sugiyama T, Mori T, Sugiura N, Asada T, Umemura W, Ozaki T, Suzuki M, Akamatsu T, Westaby S, Katsumata T, Saito S. Development status of Terumo implantable left ventricular assist system. Artif Organs. 2001;25:411–3.
Frazier OH, Cohn WE, Tuzun E, Winkler JA, Gregoric ID. Continuous-flow total artificial heart supports long-term survival of a calf. Tex Heart Inst J. 2009;36:568–74.
Loebe M, Bruckner B, Reardon MJ, Doorn E, Estep J, Gregoric I, Masud F, Cohn W, Motomura T, Torre-Amione G, Frazier OH. Initial clinical experience of total cardiac replacement with dual HeartMate-II axial flow pumps for severe biventricular heart failure. Methodist Debakey Cardiovasc J. 2011;7:40–4.
Fukamachi K, Horvath DJ, Massiello AL, et al. An innovative, sensorless, pulsatile, continuous-flow total artificial heart: device design and initial in vitro study. J Heart Lung Transplant. 2010;29:13–20.
Greatrex NA, Timms DL, Kurita N, Palmer EW, Masuzawa T. Axial magnetic bearing development for the BiVACOR rotary BiVAD/TAH. IEEE Trans Biomed Eng. 2010;57:714–21.
Guan Y, Karkhanis T, Wang S, Rider A, Koenig SC, Slaughter MS, Banayosy AE, Ündar A. Physiologic benefits of pulsatile perfusion during mechanical circulatory support for the treatment of acute and chronic heart failure in adults. Artif Organs. 2010;34:529–36.
Abe Y, Ishii K, Isoyama T, Saito I, Inoue Y, Ono T, Nakagawa H, Nakano E, Fukazawa K, Ishihara K, Fukunaga K, Ono M, Imachi K. The helical flow pump with a hydrodynamic levitation impeller. J Artif Organs. 2012;15:331–40.
Abe Y, Ishii K, Isoyama T, Saito I, Inoue Y, Sato M, Hara S, Hosoda K, Ariyoshi K, Nakagawa H, Ono T, Fukazawa K, Ishihara K, Imachi K. The helical flow total artificial heart: implantation in goats. Conf Proc IEEE Eng Med Biol Soc. 2013; 2720–3. ISSN 1557-170X.
Richards PJ, Hoxey RP. Appropriate boundary conditions for computational wind engineering models using the k-ε turbulence model. J Wind Eng Ind Aerodyn. 1993;46&47:145–53.
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The study was supported in part by the JSPS KAKENHI (22249053 and 22240054).
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Hosoda, K., Ishii, K., Isoyama, T. et al. Computational fluid dynamics analysis of the pump parameters in the helical flow pump. J Artif Organs 17, 9–15 (2014). https://doi.org/10.1007/s10047-013-0739-8
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DOI: https://doi.org/10.1007/s10047-013-0739-8