Verfahren und Gerät zum Anpassen der Fühlerlänge eines Impedanzmesskatheters an eine ventrikuläre Kammer

An apparatus and method for matching the distance spanned by a plurality of surface electrodes on an impedance measuring catheter to the size of a ventricular chamber to be measured is disclosed. The catheter (18) includes a plurality of longitudinally spaced electrodes (A-L) extending from its dist...

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Hauptverfasser:	SALO, RODNEY W., FRIDLEY, MN 55432, US, PEDERSEN, BRIAN D., ST. PAUL, MN 55119, US
Format:	Patent
Sprache:	ger
Schlagworte:	DIAGNOSIS HUMAN NECESSITIES HYGIENE IDENTIFICATION MEDICAL OR VETERINARY SCIENCE SURGERY
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creator	SALO, RODNEY W., FRIDLEY, MN 55432, US PEDERSEN, BRIAN D., ST. PAUL, MN 55119, US
description	An apparatus and method for matching the distance spanned by a plurality of surface electrodes on an impedance measuring catheter to the size of a ventricular chamber to be measured is disclosed. The catheter (18) includes a plurality of longitudinally spaced electrodes (A-L) extending from its distal end (20) and spanning a distance known to be greater than the maximum length of a ventricular chamber. With the distal end of the catheter located at the apex of the ventricle, an AC drive signal is applied between the distal electrode and a proximal electrode known to be outside of the ventricle. By then sensing the resulting voltage between successive adjacent electrode pairs and comparing same, the pair where a different characteristic is exhibited is known to be at the transition between the ventricle and the atrium.
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subjects	DIAGNOSIS HUMAN NECESSITIES HYGIENE IDENTIFICATION MEDICAL OR VETERINARY SCIENCE SURGERY
title	Verfahren und Gerät zum Anpassen der Fühlerlänge eines Impedanzmesskatheters an eine ventrikuläre Kammer
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