Inductive element for providing MRI compatibility in an implantable medical device lead
First Claim
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1. A system comprising:
- a medical device lead including;
a connector at a proximal end of the lead;
a conductor electrically connected to the connector at a proximal end of the conductor; and
at least one electrode coupled to a distal end of the conductor; and
a device securable to the proximal end of the lead and comprising an inductive element, the device including a port configured to receive the connector and position the inductive element entirely circumferentially around at least a portion of the connector, wherein the device is configured such that, when the connector of the medical device lead is received within the port, the inductive element is not directly electrically connected to the conductor of the lead.
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Abstract
A system includes a medical device lead including a connector at a proximal end of the lead, a conductor electrically connected to the connector at a proximal end of the conductor, and at least one electrode coupled to a distal end of the conductor. The system further includes a device securable to the proximal end of the lead including an inductive element. The device includes a port configured to receive the connector and position the inductive element around at least a portion of the connector.
364 Citations
20 Claims
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1. A system comprising:
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a medical device lead including; a connector at a proximal end of the lead; a conductor electrically connected to the connector at a proximal end of the conductor; and at least one electrode coupled to a distal end of the conductor; and a device securable to the proximal end of the lead and comprising an inductive element, the device including a port configured to receive the connector and position the inductive element entirely circumferentially around at least a portion of the connector, wherein the device is configured such that, when the connector of the medical device lead is received within the port, the inductive element is not directly electrically connected to the conductor of the lead. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A device for transforming a non-MR conditional lead into an MRI conditionally safe lead, the device comprising:
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an insulative housing including a port configured to receive a connector of the non-MR conditional lead; and an inductive element disposed around at least a portion of the port and positioned within the housing such that the inductive element entirely circumferentially surrounds at least a portion of the connector from the non-MR conditional lead when the connector is received in the port, the device configured such that the inductive element does not directly electrically connect to circuitry within a pulse generator when the connector of the non-MRI conditional lead is received within the port. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A lead assembly comprising:
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a non-MR conditional medical device lead including a connector at a proximal end of the lead, a conductor electrically connected to the connector at a proximal end of the conductor, and at least one electrode coupled to a distal end of the conductor; and a lead cap securable to the proximal end of the lead, the lead cap including a port configured to receive the connector of the non-MRI conditional lead, and an inductive element comprising an inductor coil defining a lumen, the lead cap configured to electrically terminate the lead and inhibit MRI-induced currents in the conductor of the lead when the lead is not connected to a pulse generator, by covering the connector and positioning the inductor coil around at least a portion of the connector disposed within the port of the lead cap such that the connector extends within the lumen of the inductor coil. - View Dependent Claims (18, 19, 20)
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Specification