The Valvo‐Pump, An Axial Blood Pump Implanted at the Heart Valve Position: Concept and Initial Results
- 1 June 1992
- journal article
- Published by Wiley in Artificial Organs
- Vol. 16 (3) , 297-299
- https://doi.org/10.1111/j.1525-1594.1992.tb00314.x
Abstract
The valvo-pump, an axial nonpulsatile blood pump implanted at the heart valve position, has been developed. The valvo-pump consists of an impeller and a motor, which are encased in a housing. An impeller with 5 vanes (22.0 mm in diameter) is used. The impeller is connected to a samarium-cobalt-rare earth magnet direct current (DC) brushless motor measuring 21.3 mm in diameter and 18.5 mm in length. Sealing is achieved by means of a ferrofluidic seal. A pump flow of 10.5 L/min was obtained at a pump differential pressure of 3.3 kPa (25 mm Hg), and a flow of 4.9 L/min was obtained at 7.0 kPa (53 mm Hg). Sealing was kept perfect against a pressure of 29.3 kPa (220 mm Hg) at 9,000 rpm.Keywords
This publication has 0 references indexed in Scilit: