Implantable Lead Introducer With Non-Circular Lumen Orientation Control

The introducer tool employs a non-circular lumen with an asymmetric cross-sectional shape (e.g., elliptical, rectangular, or polygonal) that corresponds to the asymmetric shape of the lead body. This asymmetric geometry prevents rotational movement of the lead within the lumen, ensuring that the electrodes maintain their intended orientation during implantation. The asymmetric fit between the lumen and lead body creates mechanical constraints that lock the lead in a specific rotational position, thereby eliminating the flipping problem while maintaining ease of insertion.

The non-circular lumen introducer tool performs a preliminary action by constraining the lead's rotational orientation before the electrodes make contact with the cardiac tissue. By preventing rotation during the entire implantation process, the system ensures that electrodes are positioned at the optimal locations for cardiac stimulation from the outset. This preliminary positioning control allows the use of lower energy levels because the electrodes are already in the correct orientation, thereby avoiding the need for high energy that would otherwise be required to compensate for improper positioning.