ACTIVE IMPLANTABLE MEDICAL SYSTEM HAVING EMI SHIELDED LEAD
First Claim
Patent Images
1. An implantable medical system, comprising:
- an active implantable medical device (AIMD) having a conductive equipotential surface;
at least one lead having a length exteriorly extending from a proximal end at or adjacent to the AIMD to a biological sensing or stimulating electrode at a distal end; and
an electromagnetic interference (EMI) shield surrounding the at least one lead along at least a portion of the length thereof, the EMI shield being conductively coupled to the AIMD equipotential surface.
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Abstract
A lead extending exteriorly from an active implantable medical device (AIMD) is at least partially ensheathed within an electromagnetic interference (EMI) shield. The AIMD has a conductive equipotential surface to which the EMI shield may be conductively coupled. An impeding circuit may be provided for raising the high frequency impedance of the lead. An energy diversion circuit may also be provided for conductively coupling the lead to the EMI shield.
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Citations
59 Claims
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1. An implantable medical system, comprising:
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an active implantable medical device (AIMD) having a conductive equipotential surface; at least one lead having a length exteriorly extending from a proximal end at or adjacent to the AIMD to a biological sensing or stimulating electrode at a distal end; and an electromagnetic interference (EMI) shield surrounding the at least one lead along at least a portion of the length thereof, the EMI shield being conductively coupled to the AIMD equipotential surface. - 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)
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33. An implantable medical system, comprising:
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an active implantable medical device (AIMD); at least one lead having a length exteriorly extending from a proximal end at or adjacent to the AIMD, to a biological sensing or stimulating electrode at a distal end; and an electromagnetic interference (EMI) shield surrounding the at least one lead along at least a portion of the length thereof, the EMI shield including an electrically conductive exterior surface suitable for long-term exposure to body tissues/fluids. - View Dependent Claims (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)
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Specification