COLLAPSING COIL COUPLING FOR LEAD EXTENSION AND EXTRACTION

摘要

A device for extending a lead according to some embodiments includes a body, a coil element coupled to the body, the body configured to cover the coil element during use, the coil element comprising an inner lumen sized to receive an outer surface of a lead, the coil element is movable between a first configuration in which the coil element slides over the lead, and a second configuration in which at least some coils grip the outer surface of the lead; an actuation mechanism operatively coupled to the coil element, the actuation mechanism configured to move the coil element between the first and second configurations; and a tether coupled to the lead via the body, the coil element, and/or actuation mechanism, the tether configured to extend further proximally than a proximal-most end of the lead and configured to transfer tension force applied to the tether to the lead.

主权项

1. A device for extending a lead, comprising:
a body; a coil element coupled to the body, the body configured to cover at least a portion of the coil element during use, the coil element comprising a plurality of coils forming an inner lumen, wherein the inner lumen is sized to receive an outer surface of a lead, the coil element is movable between a first configuration in which the coil element slides over the lead, and a second configuration in which at least some coils of the plurality of coils grip the outer surface of the lead; an actuation mechanism operatively coupled to the coil element, the actuation mechanism configured to move the coil element between the first and second configurations; and a tether coupled to the lead via one or more of the body, the coil element, and the actuation mechanism, the tether configured to extend further proximally than a proximal-most end of the lead, the tether further configured to transfer at least a portion of a tension force applied to the tether to the lead via the one or more of the body, the coil element, and the actuation mechanism.