×

Mri/nmr compatible hyperpolarized gas delivery valves for ventilators and associated gas delivery methods

  • US 20070144523A1
  • Filed: 02/25/2004
  • Published: 06/28/2007
  • Est. Priority Date: 02/26/2003
  • Status: Abandoned Application
First Claim
Patent Images

1. A gas delivery valve for a ventilator configured to supply hyperpolarized gas to a subject, the gas delivery valve comprising:

  • a valve body having at least one gas flow path extending between at least one gas inlet port and at least one gas exit port and at least one spool receptacle, one of the at least one gas inlet ports being in fluid communication with a hyperpolarized gas source;

    at least one spool member disposed in a respective one of said at least one spool receptacles of said valve body, said spool member configured and sized to cooperate with said valve body to selectively open and close the at least one gas flow path; and

    at least one pilot fluid port in fluid communication with said spool receptacle, wherein, in operation, a pilot fluid command pulse signal having an associated pressure and duration is transmitted into said pilot fluid port thereby forcing said spool to translate an actuation distance in a predetermined direction in said valve body receptacle to open and/or close the at least one gas flow path.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×