Key result
A prototype rotary blood pump with passive hydromagnetic bearings demonstrated lower hemolysis values (NIH = 0.0029 g/100 L) compared to the Biomedicus BP-80 pump (NIH = 0.0033 g/100 L).
Population
In vitro test stand and blood damage tests using viscosity-adjusted test fluid and blood
Comparison
Prototype rotary blood pump with passive… vs Biomedicus BP-80 pump (for hemolysis tests)
Design
Preclinical
Authors
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May enable lower-hemolysis rotary pumps; leaves open clinical adoption pending prospective human data.
Absolute Event Rate: 0.0029% vs 0.0033%
A novel rotary blood pump with passive hydromagnetic bearings and large rotor-housing gaps demonstrated stable performance and low hemolysis in vitro, suggesting potential for disposable pump heads.
Stoiber et al. (2009) studied this question. Passive magnetically and hydrodynamically suspended rotary blood pump vs. Biomedicus BP-80 pump was evaluated on Hemolysis (NIH in g/100 L). A prototype rotary blood pump with passive hydromagnetic bearings demonstrated lower hemolysis values (NIH = 0.0029 g/100 L) compared to the Biomedicus BP-80 pump (NIH = 0.0033 g/100 L).