Internal jugular and left ventricular thermodilution catheter
First Claim
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1. A bioelectric measuring apparatus for insertion within a living organism comprising:
- an elongated, flexible, catheter body having a distal or tip end and a proximal segment;
main heating means, mounted on the distal or top end of said catheter body, for tepefying the surrounding substance of said living organism;
temperature measuring means, mounted on the proximal segment of said catheter body, for quantifying the amount of caloric energy conducted to the surrounding substance of said living organism; and
auxiliary heating means, electrically connected to said main heating means by lead wires, for providing heat to said lead wires.
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Abstract
A thermodilution catheter having a distal high frequency heating coil of fine wires, heat measuring thermocouples, and a proximal resistance thermometer, all wound externally on a catheter for measuring blood flow in either the jugular vein or the left ventricle of the heart. The device also incorporates electrodes for electrocardiogram tracings.
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Citations
11 Claims
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1. A bioelectric measuring apparatus for insertion within a living organism comprising:
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an elongated, flexible, catheter body having a distal or tip end and a proximal segment; main heating means, mounted on the distal or top end of said catheter body, for tepefying the surrounding substance of said living organism; temperature measuring means, mounted on the proximal segment of said catheter body, for quantifying the amount of caloric energy conducted to the surrounding substance of said living organism; and auxiliary heating means, electrically connected to said main heating means by lead wires, for providing heat to said lead wires. - View Dependent Claims (2, 3, 4, 6, 7, 8, 9, 10, 11)
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5. A bioelectric measuring apparatus for insertion within a living organism according to claim 5 wherein said heating coil comprises a bifilarlywound coil with an impedance identical to that of said main heating means.
Specification