Patent ID: 9119968
Filing Date: 2015-09-01
Classification: A61B,A61N,G01R,H03H,Y10T

Abstract:
1. An implantable lead comprising a lead length extending from a proximal lead end to a distal lead portion having a distal lead end, wherein the proximal lead end is configured to be removably connectable to electronic circuits of a cardiac pacemaker, the lead comprising: a) a first electrode contactable with biological cells, wherein the first electrode is disposed at the distal lead end; b) a first conductor extending from an electrical connection at the first electrode to or adjacent to the proximal lead end; c) a second, RING electrode contactable with biological cells, wherein the second electrode is disposed at the distal lead portion; d) a second conductor electrically insulated from the first conductor and extending from an electrical connection at the second, RING electrode to or adjacent to the proximal lead end; e) a first bandstop filter physically and electrically coupled in series along the first conductor; and f) a second bandstop filter physically and electrically coupled in series along the second conductor, g) wherein the first conductor is in a spirally wound relationship with the second conductor from adjacent to the proximal lead end to adjacent to the RING electrode where the first conductor extends through the RING electrode to the first electrode so that along the lead length: h) wherein, at or near their respective resonant frequencies, the first and second bandstop filters comprise respective first and second high impedance resonant filters, and wherein the first and second resonant frequencies are each at or near an MRI RF pulsed frequency i) wherein, proximal to the second electrode, the second conductor is wrapped around the first conductor in a spiral wound system, and wherein, the first conductor extends to the distal tip, passing through the second electrode.