FREQUENCY SELECTIVE PASSIVE COMPONENT NETWORKS FOR IMPLANTABLE LEADS OF ACTIVE IMPLANTABLE MEDICAL DEVICES UTILIZING AN ENERGY DISSIPATING SURFACE
First Claim
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1. A passive component network for an implantable leadwire of an active implantable medical device (AIMD), comprising:
- at least one leadwire having a length extending between and to a proximal end and a tissue-stimulating or biological-sensing electrode at a distal tip end; and
a frequency selective energy diversion circuit for diverting high frequency energy away from the electrode to a point or an area spaced from the electrode for dissipation of said high-frequency energy.
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Abstract
Decoupling circuits are provided which transfer energy induced from an MRI pulsed RF field to an energy dissipating surface. This is accomplished through broadband filtering or by resonant filtering. In a passive component network for an implantable leadwire of an active implantable medical device, a frequency selective energy diversion circuit is provided for diverting high-frequency energy away from a leadwire electrode to a point or an area spaced from the electrode, for dissipation of high-frequency energy.
165 Citations
62 Claims
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1. A passive component network for an implantable leadwire of an active implantable medical device (AIMD), comprising:
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at least one leadwire having a length extending between and to a proximal end and a tissue-stimulating or biological-sensing electrode at a distal tip end; and a frequency selective energy diversion circuit for diverting high frequency energy away from the electrode to a point or an area spaced from the electrode for dissipation of said high-frequency energy. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62)
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Specification