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Apparatus for the prevention of retrograde movement of fluids during the use of air eliminating filters in intravenous therapy

  • US 5,634,905 A
  • Filed: 02/14/1996
  • Issued: 06/03/1997
  • Est. Priority Date: 02/14/1996
  • Status: Expired due to Term
First Claim
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1. An improved air eliminating filter in combination with an intravenous fluid line for use in intravenous therapy, the air eliminating filter having a proximal fluid chamber disposed in fluid communication with a proximal fluid inlet, and a distal fluid chamber disposed in fluid communication with a distal fluid outlet, said proximal fluid chamber and said distal fluid chamber being fluidly connected through a liquid filter element, the improvement comprising:

  • a one-way vented valve assembly for venting the proximal fluid chamber, said one-way vented valve assembly permitting gases to vent from the proximal fluid chamber to an atmosphere external to the proximal fluid chamber, and restricting a flow of gases from the external atmosphere into the proximal fluid chamber.

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