×

Heater for in vivo blood infusion

  • US 5,250,032 A
  • Filed: 12/13/1991
  • Issued: 10/05/1993
  • Est. Priority Date: 12/13/1991
  • Status: Expired due to Fees
First Claim
Patent Images

1. A heater for blood, plasma and other intravenous solution infusion comprising a housing configured to be attached snugly onto the arm of a patient for the intravenous solution to exit said housing near to the point at which the intravenous solution enters the patient'"'"'s body, said housing having an elongated channel sized to receive and releasibly hold in intimate contact therewith an elongated portion of a plastic intravenous tube, said channel being straddled by two elongated chambers in which batteries are mounted;

  • electrical heating means mounted to said housing adjacent said channel and electrically coupled with said batteries for applying heat to the elongated portion of a plastic intravenous tube held in said channel and to intravenous solutions flowing therethrough; and

    control means for controlling power supplied by said batteries to said heater means in response to changes in temperature of intravenous solutions flowing through the elongated tube portion wherein said control means comprises means for applying continual d.c. power to said heating means at temperatures below a selected value, and means for applying pulse modulated d.c. power to said heater means at temperatures above said selected value.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×