Back to results
US 2003/0158491 A1Published application
Retrograde catheter with reduced injectate induced temperature offset
AssigneeTransonic Systems, Inc.
InventorsNikolai M. Krivitski, Victor V. Kislukhin
Life of this patent
Estimating the term…
Abstract
A catheter for retrograde orientation in a blood flow is used to determine the blood flow rate by thermodilution measurements. The determination of the blood flow rate accommodates injectate induced thermal influences on a dilution thermal sensor, wherein the thermal influences can occur prior to introduction of the injectate into the blood flow.
Claims1
A retrograde thermodilution measurement catheter for measuring a blood flow, comprising:
- (a) an elongate catheter body including an injectate lumen, a thermal insulating lumen and a thermal dilution sensor lumen:
- (b) a thermal dilution sensor connected to the catheter body and located to measure the blood flow;
- (c) a thermal conductor in a length of the thermal insulating lumen;
- and
- (d) a thermal injectate sensor adjacent the thermal conductor.
2 more elements
Dependencies are inferred from the claim text.