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Method of detecting infiltration of infused liquid by comparing altered skin temperature with skin temperature in area of infiltrated liquid

  • US 4,010,749 A
  • Filed: 05/09/1975
  • Issued: 03/08/1977
  • Est. Priority Date: 05/09/1975
  • Status: Expired due to Term
First Claim
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1. The method of detecting liquid-infusion infiltration into the skin of a patient which is at a temperature not sufficiently different from the temperature of the liquid being infused, the method comprising the steps of:

  • placing a liquid-delivery conduit into a blood vessel of a patient for delivering an infusion liquid into a blood vessel of the patient;

    altering the patient'"'"'s skin surface temperature relative to the temperature of the liquid in a region of the skin overlying the tip of the intravascular portion of the liquid conduit means; and

    sensing the difference between the skin surface temperature due to the accumulation of the infused liquid in the perivascular region and the altered skin temperature for providing an output indicative of the difference between the two temperatures.

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