Summary
The valvo-pump, implanted at the heart valve position preserving the diseased heart muscle, has several advantages over artificial heart replacement. They are (a) good anatomical fitting to the natural heart, (b) less blood- contacting surface, and (c) easy implantation technique.
The housing of the pump consists of a stainless steel tube of 37 mm in outer diameter and 33 mm in length. Within the housing, an impeller with 10 vanes is located. The impeller is connected to a d.c. brushless motor (Inland, RBE 0400- A00) of 21.3 mm in outer diameter and 18.5 mm in length. The maximum continuous output power is 10.6 W. The blood passes through the channel between the motor housing (23 mm in diameter) and the pump housing.
The pump was evaluated on a hydraulic mock circulation system to study its performance characteristics. A pump flow of 51/min was obtained against a mean outlet pressure of 60 mmHg. The valvo-pump will become feasible by the development of a miniature high-power motor and the optimization of the impeller design.
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© 1991 Springer-Verlag Tokyo
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Mitamura, Y., Yozu, R., Tanaka, T. (1991). Valvo-pump: Axial nonpulsatile blood pump implanted at the heart valve position. In: Akutsu, T., et al. Artificial Heart 3. Springer, Tokyo. https://doi.org/10.1007/978-4-431-68126-7_14
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DOI: https://doi.org/10.1007/978-4-431-68126-7_14
Publisher Name: Springer, Tokyo
Print ISBN: 978-4-431-68128-1
Online ISBN: 978-4-431-68126-7
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