Patent ID: 7379776
Filing Date: 2008-05-27
Classification: A61N

Abstract:
1. A stylet unit for implanting in a body, with the aid of an earlier installed tubular delivery sheath having a lumen with an inner diameter, a lead system including a distal electrode for an implantable cardiac stimulation device being slidably received in the lumen of the introducer device, the stylet unit comprising: an elongated main member having a longitudinal axis extending between a proximal end and a distal end engageable with a thrusting region of the lead for advancing the distal electrode to a desired stimulation site in the body; and a knob of resilient composition fixed to the proximal end of the main member for manipulating the main member, the knob being generally aligned with the longitudinal axis of the main member and having a nominal outer dimension greater than the inner diameter of the lumen of the delivery sheath and being compressible in directions transverse of the longitudinal axis to slidably remove the delivery sheath from the body and from the lead system and from the stylet unit, advancing the delivery sheath across the knob which becomes compressed to a reduced outer dimension generally equivalent to the inner diameter of the delivery sheath enabling its slidable transit across the knob and, eventually, free of the lead system and of the stylet unit.