In-line microwave warming apparatus

Details In-line microwave warming apparatus In-line microwave warming apparatus

1994-09-06

1997-11-04

Shay, David M.

Surgery

Instruments

Heat application

604 20, 604114, 607102, 219630, 219679, 219687, 219690, A61B 1738

Patent

active

056833814

ABSTRACT:
A microwave apparatus for warming of a liquid such as blood or IV fluids in which the warming occurs in-line by means of a microwave heating cavity having a source of microwave energy coupled thereto. A support element in the form of a bobbin forms an assembly with an IV tube wound about the bobbin. This tubing-bobbin assembly is inserted into the microwave heating cavity. A non-invasive, non-perturbing microwave temperature monitor is provided coupled to the microwave heating cavity for monitoring the temperature of liquid flowing in the IV tube. Controls are provided including a desired operating selector for combining signals representative of, not only cavity temperature, but also inlet and outlet temperatures to control the power level of microwave energy delivered to the heating cavity.

REFERENCES:
patent: 4321918 (1982-03-01), Clark, II
patent: 4614514 (1986-09-01), Carr et al.
patent: 4632127 (1986-12-01), Sterzer
patent: 4715727 (1987-12-01), Carr
patent: 5073167 (1991-12-01), Carr et al.
"Heating Blood in Extracorporal Circulation with a High-Frequency Electromagnetic Field; Effect of Microwaves on Blood" Andre et al.; Biomedical Thermology, Alan R Liss, 1982 pp. 257-268.

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