Research and Development for a Left Ventricular Bypass Pump System.

摘要

A complete left ventricular bypass pump system has been developed which includes pump power consoles,monitoring consoles,bypass pumps,and intrathoracic connectors. The bedside pump power console is a quiet self-contained unit that provides carbon dioxide pressure and vacuum pulses to the blood pump. The carbon dioxide is recylced and gas pressure and vacuum are maintained by servo-controlled internal compressor-motor units. An internal ECG amplifier provides synchronization and batteries provide continuous mobil pump actuation. Controls provide for pressure and vacuum setting,synchronization time delay,expulsion pulse duration,slow actuation of pulse diagram,and patient weaning by reduced pump rate. Blood pump actuation is insured by automatic switchover to a pacer if ECG is incompetent. The monitor unit displays four channels of blood pressure,heart rate,and blood flow. An ECG amplifier is included and six channels of data can be recorded and simultaneously displayed on a 8 x 10oscilloscope. Batteries provide emergency operation of both the monitor and the pump unit.