Patent ID: 7483753

Claim:
A coronary probe for implantation in a vein of the coronary network for the stimulation of a left cavity of the heart, comprising: a flexible hollow sheath having an internal conductor and a distal end; an intermediate element, positioned at the distal end of the sheath, having a cylindrical body bearing a retention structure and a distal end wherein said cylindrical body further comprises a first diameter and a first axis at the median of the first diameter; a probe-head, positioned at the distal end of the intermediate element, having a protuberance and at least one stimulation electrode that is electrically conducting and connected to said internal conductor, said stimulation electrode being positioned on said probe-head to come in contact with said vein; wherein said retention structure further comprises: at least one relief formed on the cylindrical body, said relief having an overall helicoid contour and a continuous ridge of variable radius extending around and for a length along the cylindrical body, said helicoid contour having a second diameter at the point where said variable radius is at a maximum, wherein said second diameter is greater than said first diameter; a second axis formed at the median of the second diameter that is offset from, and parallel to, the first axis; wherein said overall helicoid contour further comprises an eccentric contour, relative to the first axis of the cylindrical body, that is centered on the second axis at the point where the variable radius is at a maximum.