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System for flushing a medical fluid

  • US 4,267,834 A
  • Filed: 04/24/1979
  • Issued: 05/19/1981
  • Est. Priority Date: 04/24/1979
  • Status: Expired due to Term
First Claim
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1. A system for flushing a medical fluid that includes a pressure wave tube for coupling a patient connector with a pressure transducer, and which includes a feed tube to continuously infuse fluid to a patient through a side port of the system, wherein the improvement comprises:

  • a flushing valve connected to the feed tube and spaced from the side port by a flexible tube segment; and

    the flushing valve includes an elastically distortable tube having a noncircular outer surface, and a restriction in the tube which combines with the tube to form a restricted passage means having a predetermined flow rate therethrough, said tube being distortable to temporarily form a flush passage in the valve having a substantially faster flow rate.

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