Intraluminal guidance system using bioelectric impedance

Details Intraluminal guidance system using bioelectric impedance Intraluminal guidance system using bioelectric impedance

2009-04-02

2010-12-21

Hindenburg, Max (Department: 3736)

Surgery

Instruments

Blood vessel, duct or teat cutter, scrapper or abrader

C600S585000, C600S373000, C600S547000

Reexamination Certificate

active

07854740

ABSTRACT:
A system using bioelectric impedance to guide a flexible elongate transluminal device through an occlusion in a vessel. The device can be a guidewire or a device for performing an atherectomy, discectomy, ablation or similar technique. The device includes a first electrode disposed on a distal portion of the device. A second electrode is disposed in electric contact with the patient separate from the first electrode. An electric current is supplied between the first and second electrodes and a voltage drop is measured between the first and second electrodes. The voltage drop is converted to bioelectric impedance. Based on the impedance measurement, a clinician can determine if the device is approaching the vessel wall, permitting the clinician to redirect the device away from the vessel wall.

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