Premium
In Vitro Evaluation of a Pulsatile Assist Device for a Centrifugal Pump Using a New Principle
Author(s) -
Iwaya Fumio,
Igari Tsuguo,
Hoshino Schunichi,
Hikichi Hitoshi
Publication year - 1995
Publication title -
artificial organs
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.684
H-Index - 76
eISSN - 1525-1594
pISSN - 0160-564X
DOI - 10.1111/j.1525-1594.1995.tb02406.x
Subject(s) - pulsatile flow , centrifugal pump , volumetric flow rate , peristaltic pump , materials science , flow (mathematics) , biomedical engineering , rotodynamic pump , centrifugal force , pulse pressure , tube (container) , pulse (music) , mechanics , impeller , reciprocating pump , progressive cavity pump , mechanical engineering , variable displacement pump , cardiology , blood pressure , electrical engineering , engineering , medicine , composite material , physics , voltage
To induce a pulsatile flow in a centrifugal pump, we developed a new device (pulsatile assist device for centrifugal pump: PADCP) using a new concept. This device consists of a flexible polyurethane tube with an air chamber which is connected to the arterial side of the centrifugal pump circuit directly. A mock circulation system was used for evaluation of this PADCP. Thirty to 40 mm Hg of pulse pressure was obtained under 3–6 L/min of flow rate. By increasing the driving pressure of the PADCP from 200 to 600 mm Hg in a mock system, 4–48 mm Hg of pulse pressure was gained accompanied by a decrease in pump flow and increased left atrial pressure. The decreased pump flow and increased left atrial pressure were recovered easily by increasing the flow rate of the centrifugal pump. Pressures at the proximal site of the PADCP were less than 500 mm Hg. The PADCP was useful to induce a pulsatile flow in a centrifugal pump.