Assembly for replacing a heart valve or a coronary angioplasty assembly

An assembly for replacing a heart valve by the percutaneous route, comprising:

• an introducer comprising at least one tubular introduction sheath intended to be introduced into an artery of a human body (C) and to allow through a surgical intervention device;
• at least one bipolar guide wire, intended to be introduced into the tubular introduction sheath and configured to advance an artificial valve intended to replace the heart valve, the bipolar guide wire comprising a metal core coated with an electrically isolating sheath on a central portion between a proximal end and a distal end of the bipolar guide wire, the metal core being non-electrically isolated on the length of the bipolar guide wire beyond the central portion, the electrically isolating sheath comprising an outer periphery and integrating an electrically conductive element, for which a distal portion is apparent towards the exterior on at least one part of an outer periphery of the electrically isolating sheath configured to be in contact with the subcutaneous tissue of the body or with the artery and for which a proximal portion is apparent towards the exterior on the at least one part of the outer periphery of the electrically isolating sheath configured to be accessible from outside the body (C) when the bipolar guide wire is introduced into the tubular introduction sheath, with the proximal portion acting as a connection to an electrode of a cardiac stimulator configured to be outside the body, and the metal core of the bipolar guide wire acts as a connection to another electrode of the cardiac stimulator.