The Effect of Rotor Geometry on the H−Q Curves of the Sputnik Implantable Pediatric Rotary Blood Pump

In this work, the effect of rotor geometry on the H−Q curves of the Sputnik implantable pediatric rotary blood pump was studied. Load sensitivity was calculated for different input angles of the pump impeller and diffuser blades. Hydraulic efficiency and shear stress were determined for each modification of the pump design. The study showed that variation of the input angles of the impeller and diffuser blades had a significant effect on the load sensitivity of the pump. An almost twofold increase in the load sensitivity was achieved (from 0.03420 to 0.05957 L·min−1·mm Hg−1).

[1]  William E Cohn,et al.  Optimization of axial-pump pressure sensitivity for a continuous-flow total artificial heart. , 2010, The Journal of heart and lung transplantation : the official publication of the International Society for Heart Transplantation.

[2]  F. Menter.  Two-equation eddy-viscosity turbulence models for engineering applications , 1994 .

[3]  Robert L Kormos,et al.  Sixth INTERMACS annual report: a 10,000-patient database. , 2014, The Journal of heart and lung transplantation : the official publication of the International Society for Heart Transplantation.

[4]  Sergey V. Selishchev,et al.  Ventricular Assist Device Sputnik: Description, Technical Features and Characteristics , 2015 .

[5]  M C Oz,et al.  Long-term use of a left ventricular assist device for end-stage heart failure. , 2001, The New England journal of medicine.

[6]  D. Telyshev,et al.  Analysis of the Preload and Afterload Sensitivity of the Sputnik Rotary Blood Pump , 2016, BioMed 2016.

[7]  Tao Zhang,et al.  A quantitative comparison of mechanical blood damage parameters in rotary ventricular assist devices: shear stress, exposure time and hemolysis index. , 2012, Journal of biomechanical engineering.

[8]  Klaus Affeld,et al.  Numerical Analysis of Blood Damage Potential of the HeartMate II and HeartWare HVAD Rotary Blood Pumps. , 2015, Artificial organs.

[9]  Anson Cheung,et al.  Design Concepts and Preclinical Results of a Miniaturized HeartWare Platform , 2015, Innovations.

[10]  Guruprasad A Giridharan,et al.  Miniaturization of mechanical circulatory support systems. , 2012, Artificial organs.

[11]  S. Kyo.  Ventricular Assist Devices in Advanced-Stage Heart Failure , 2014 .

[12]  S V Selishchev,et al.  [Development of left ventricular assist devices as the most effective way of treatment of acute cardiac insufficiency]. , 2014, Meditsinskaia tekhnika.

[13]  Sergey V Selishchev,et al.  Optimisation of the Sputnik-VAD Design , 2016, The International journal of artificial organs.

[14]  Kiyotaka Fukamachi,et al.  Preload sensitivity in cardiac assist devices. , 2013, The Annals of thoracic surgery.

[15]  William E. Cohn,et al.  Preload Sensitivity of the Jarvik 2000 and HeartMate II Left Ventricular Assist Devices , 2008, ASAIO journal.

[16]  D. Mason,et al.  Response of rotary blood pumps to changes in preload and afterload at a fixed speed setting are unphysiological when compared with the natural heart. , 2011, Artificial organs.