Mri/nmr compatible hyperpolarized gas delivery valves for ventilators and associated gas delivery methods
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United States of America Patent
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Issued Date -
Jun 28, 2007
app pub date -
Feb 25, 2004
filing date -
Feb 26, 2003
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Methods, systems, assemblies, computer program products and devices deliver hyperpolarized gas by: (a) providing a gas delivery valve with at least one gas flow path therein, the valve comprising a valve body and at least one spool held in the valve body; (b) transmitting a pilot command fluid pulse signal to the at least one spool to introduce pressure onto the spool to force the spool to translate an actuation distance in the valve body; and (c) opening and/or closing the at least one gas flow path in response to the transmitted signal to deliver hyperpolarized gas to a subject.
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