摘要:
In a venous/cardiotomy reservoir, substantially accurate volume indication and post-operative use are provided while preventing introduction of air into the reservoir outlet, by interposing a collapsible bag between the underside of a rigid reservoir housing and the reservoir outlet.
摘要:
A simple, self-supporting cardiotomy filter/defoamer is formed by a 20 νm cylindrical spray spun hollow plastic filter cartridge impregnated with an anti-foaming agent.
摘要:
Pulsatile cardiopulmonary flow closely approximating a natural heartbeat is generated in a heart-lung machine by using a proportioning valve (38) to partly convey blood in the machine's cardiopulmonary circuit to the arterial supply line (32), and to partly recycle that blood into the cardiopulmonary circuit upstream (48) of the arterial pump. The relative proportions of conveying and recycling are varied in accordance with a waveform approximating the waveform of a human heartbeat.
摘要:
In a venous/cardiotomy reservoir, substantially accurate volume indication and post-operative use are provided while preventing introduction of air into the reservoir outlet, by interposing a collapsible bag between the underside of a rigid reservoir housing and the reservoir outlet.