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Flow pulsatility dampening devices for closed-loop controlled infusion systems

  • US 8,449,500 B2
  • Filed: 11/16/2007
  • Issued: 05/28/2013
  • Est. Priority Date: 11/16/2007
  • Status: Expired due to Fees
First Claim
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1. A flow monitoring infusing system, comprising:

  • a liquid pathway for containing a liquid pumped at a non-continuous fluid flow;

    a dampening chamber in communication with the liquid pathway, the dampening chamber configured to hold a compressed gas that absorbs pressure fluctuations of the non-continuous fluid flow to smoothen the non-continuous fluid flow, wherein the compressed gas is in direct fluid communication with the pumped liquid; and

    a fluid flow sensor disposed along the liquid pathway downstream of the dampening chamber to measure the flowrate of the smoothened fluid flow.

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