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Valve for intravenous-line flow-control system

  • US 6,709,417 B1
  • Filed: 11/17/2000
  • Issued: 03/23/2004
  • Est. Priority Date: 06/07/1995
  • Status: Expired due to Term
First Claim
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1. A valve for smoothing the delivery of intravenous fluid from a source to a patient comprising:

  • an occludable inlet mouth;

    an expandable valving chamber disposed downstream from and in fluid communication with the inlet mouth; and

    a restrictive outlet mouth disposed downstream from and in fluid communication with the expandable valving chamber, wherein the outlet mouth is capable of variably restricting delivery to the patient by providing alternatively (i) a fully open position, (ii) a partially open position and (iii) a closed position;

    so that the chamber is expandable to accept and hold under pressure a charge of fluid via the inlet mouth when the outlet mouth sufficiently restricts delivery, and so that the charge is capable of delivery to the patient when the inlet mouth is occluded, the chamber applying pressure on the charge while returning to an unstretched state such that the charge is urged to continue flowing through the outlet mouth.

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