Methods for measuring cross-sectional areas and pressure...

Details Methods for measuring cross-sectional areas and pressure... Methods for measuring cross-sectional areas and pressure...

2009-01-12

2011-12-20

Szmal, Brian (Department: 3736)

Surgery

Diagnostic testing

Measuring electrical impedance or conductance of body portion

C623S001110

Reexamination Certificate

active

08082032

ABSTRACT:
The present disclosure comprises a system, catheter and method for measuring the cross-sectional areas and pressure gradients in any hollow organ, such as, for example, blood vessels. One embodiment of such a method includes the steps of introducing an impedance catheter into a treatment site, providing electrical current flow to the treatment site, injecting a first solution and measuring a first conductance value, injecting a second solution and measuring a second conductance value, and calculating the cross-sectional area of the treatment site, in part, based on the first and second conductance values.

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