Patent ID: 8224440
Filing Date: 2012-07-17
Classification: A61N,H01F,H03H

Abstract:
1. An implantable medical lead, comprising: a) a lead body adapted for in-vivo implantation in a living subject, the lead body comprising at least one electrical conductor extending from a conductor distal end to a conductor proximal end that is configured to be electrically connectable to a therapy delivery or a monitoring device; b) a collar disposed at the distal end of the lead body, the collar comprising a proximal collar end extending to an open distal collar end; c) a casing extending from a proximal casing end to a distal casing end, wherein the casing is disposed within the collar and translatable along a longitudinal axis thereof; d) at least one electronic component disposed within the casing, but electrically insulated therefrom, wherein the electronic component is electrically coupled to the distal end of the electrical conductor; e) an electrode electrically connected to the electronic component at the distal casing end; and f) a seal supported by at least one of the collar and the casing and extending to the other of the collar and the casing so as to substantially prevent passage of fluid to the proximal casing end from the open distal collar end, g) wherein the at least one electrical conductor, the casing and the electrode are axially translatable along the collar to extend the electrode distally beyond the open distal collar end and to alternatively retract the electrode proximally into the collar as a contact location of the seal between an inner surface of the collar and an outer surface of the casing changes upon such axial proximal and distal translation thereof.