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Infusion reservoir and pump system

  • US 4,588,394 A
  • Filed: 03/16/1984
  • Issued: 05/13/1986
  • Est. Priority Date: 03/16/1984
  • Status: Expired due to Term
First Claim
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1. A normally closed valve for use in an infusion reservoir and pump system, said valve comprising:

  • a resiliently flexible housing having an inlet and an outlet;

    an inlet chamber within said housing, said inlet chamber being in open communication with said inlet;

    an outlet chamber within said housing, said outlet chamber generally overlying said inlet chamber and said outlet chamber being in open communication with said outlet;

    a valve passageway through said housing between said inlet chamber and said outlet chamber, the portion of said housing generally surrounding said valve passageway forming a valve seat; and

    a valve stem attached to and extending downwardly from an upper ceiling of said outlet chamber through said valve passageway and into said inlet chamber, said valve stem including a lower foot which sealingly engages said valve seat, the seal being replaceably broken when a housing cover overlying said outlet chamber is resiliently deformed to cause the downward movement of said valve stem through said valve passageway.

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