mri compatible lead coil

Abstract

Various embodiments relate to leads with low peak MRI heating for improved MRI compatibility. Various leads include: a lead body having at least one lumen; a proximal end configured to interface with an implantable medical device; and a distal end. Such a lead may further comprise: a conductor extending along at least a portion of the lead body within the at least one lumen and a defibrillation coil extending along an outer portion of the lead body and electrically connected to the conductor, wherein the defibrillation coil At least one fragment of is under vertical compression. Longitudinal compression can reduce peak MRI heating of defibrillation coils. The longitudinal compression can maintain circumferential contact between adjacent turns of the defibrillation coil segments.

Description

[0001] Cross References to Related Applications

[0002] This application claims US Provisional Patent Application No. 61 / 695,903, filed August 31, 2012, which is hereby incorporated by reference in its entirety. technical field

[0003] The present disclosure relates to implantable medical devices. More specifically, the present disclosure relates to MRI compatible tachycardia lead configurations. Background technique

[0004] Magnetic resonance imaging (MRI) is a non-invasive procedure that uses nuclear magnetic resonance technology to provide images of inside a patient's body. Typically, MRI systems employ magnetic coils with magnetic field strengths between approximately 0.2 and 3 Tesla. During this procedure, body tissue is briefly exposed to RF pulses of electromagnetic energy in a plane perpendicular to the magnetic field. The resulting electromagnetic energy from these pulses can be used to image body tissue by measuring the relaxation properties of excited nucle...

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