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Ambulatory intravenous delivery system

  • US 4,684,367 A
  • Filed: 04/12/1985
  • Issued: 08/04/1987
  • Est. Priority Date: 04/12/1985
  • Status: Expired due to Fees
First Claim
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1. An apparatus for intravenous delivery of substances while permitting the recipient to be ambulatory comprising:

  • (a) means for containing and delivering a substance to be delivered to the recipient, said containing means capable of being supported and carried by the recipient;

    (b) means for providing pressure to the substance to be delivered;

    (c) means to control the flow rate of the substance to the recipient;

    (d) meter means positioned within the flow path of said substance to determine the flow rate of the said substance, said meter means including heating means disposed to supply heat to a portion of said substance as it flows, detecting means disposed to detect temperature changes in the substance such that a pulse of heat may be intermittently added to said substance by said heating means and detected downstream by said detecting means to determine the flow rate of said substance; and

    (e) means to adjust said flow control means in response to said signal indicating the flow rate so as to maintain a predetermined flow rate of the substance.

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