A small pulsatile pump for extracorporeal circulation

Sasaki, Yoshitaka; Sakabe, Hideaki; Hara, T; Hashimoto, Isamu

doi:10.1007/bf02469391

The Japanese Journal of Surgery

1977

DOI: 10.1007/bf02469391

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A small pulsatile pump for extracorporeal circulation

Yoshitaka Sasaki

Hideaki Sakabe

T Hara

et al.

Abstract: A new pulsatile pump was constructed with variable beat rate and the stroke volume, controlled systolic maximum pressure and a very steep built-up curve, to be used for extracorporeal circulation.

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1988

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A pulsatile pump for cardiopulmonary bypass and its clinical use

Sasaki¹,

Kawai²,

Nishiyama³

et al. 1988

The Japanese Journal of Surgery

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A pulsatile pump driven by a coil spring, which was designed and constructed by us, is described in this report. It consists of two main parts, a disposable blood chamber and a driving section. The blood chamber has two leaflet valves and a piston, which is covered with two bellofram rolling diaphragms and moves into the housing to draw in and eject the blood. The driving section consists of three cams, an electric motor and a coil spring. The ejection force is wholly produced by the compressed coil spring and is transmitted to the piston in the blood chamber by a rod. This pump allows the ejection pressure, the beat rates, and the stroke volume all to be changed independently. The performance of the pump was tested by using a circulation model where the beat rate was adjusted from 30 to 250 bpm. The output subsequently increased from 0.8 l/min to 5.7 l/min and the stroke volume, from 20.4 ml to 36.7 ml. This new pump has been used for clinical cardiopulmonary bypasses in 24 patients of open heart surgery and the pressure traces during perfusion resembled those of the patients' own hearts.

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A pulsatile pump for cardiopulmonary bypass and its clinical use

Sasaki¹,

Kawai²,

Nishiyama³

et al. 1988

The Japanese Journal of Surgery

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show abstract

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A small pulsatile pump for extracorporeal circulation

Abstract: A new pulsatile pump was constructed with variable beat rate and the stroke volume, controlled systolic maximum pressure and a very steep built-up curve, to be used for extracorporeal circulation.

Cited by 1 publication

References 3 publications

A pulsatile pump for cardiopulmonary bypass and its clinical use

A pulsatile pump for cardiopulmonary bypass and its clinical use

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