Device and method for the implantation of active fixation medical leads

摘要

A lead implantation tool is disclosed herein. The tool may be configured to operably couple to a lead connector end of an implantable cardiac electrotherapy lead including an active fixation helix tip and wherein the lead connector end includes a contact pin proximally extending from the lead connector end. The tool may include a feature configured to couple to the contact pin and a first mechanism configured to convert linear movement into rotational movement of the contact pin relative to the lead connector end. The tool may further include a second mechanism that causes a stylet extending through the tool and into the contact pin to at least one of distally and proximally displace within the contact pin.

主权项

1. A tool for operably coupling to an implantable cardiac electrotherapy lead and a stylet, wherein the implantable cardiac electrotherapy lead has a lead connector end at a proximal portion, a contact pin proximally extending from the lead connector end, and an active fixation helix tip at a distal portion, and wherein the tool operably couples to the lead connector end, the tool comprising:
a handle having a first digit engagable member linearly displaceable along the handle; a worm gear operably coupled to the handle and first digit engagable member, wherein linear displacement of the first digit engagable member results in rotational displacement of the worm gear; an axle operably coupled to the worm gear and configured to operably couple with the contact pin, wherein rotation of the worm gear results in rotation of the axle; and a first feature that engages the lead connector end, wherein rotation of the axle causes the contact pin to rotate relative to the lead connector end; wherein the axle has a first toothed gear and the worm gear has a second toothed gear in toothed engagement with the first toothed gear.