Electromagnetic trap for a lead
First Claim
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1. A medical electrical lead, comprising:
- an elongate body having a proximal and a distal end portion and a coil wound about said distal end, said coil to provide an electromagnetic trap for filtering radio frequency (RF) signal-induced currents.
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Abstract
A method and an apparatus for trapping induced current resulting from an electromagnetic field. Embodiments of the present invention provide for an elongate body having a proximal and a distal end portion and a coil wound about the distal end, the coil to provide an electromagnetic trap for filtering radio frequency (RF) signal-induced currents.
219 Citations
22 Claims
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1. A medical electrical lead, comprising:
an elongate body having a proximal and a distal end portion and a coil wound about said distal end, said coil to provide an electromagnetic trap for filtering radio frequency (RF) signal-induced currents. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A medical electrical lead, comprising:
an elongate body having a proximal and a distal end portion and a coil wound about said distal end, said coil to provide an inductive impedance in parallel with a capacitive impedance for reducing induced currents resulting in the presence of an electromagnetic field. - View Dependent Claims (13, 14, 15)
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16. A implantable medical device system, comprising:
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an implantable medical device; and
a medical electrical lead operatively coupled to said implantable medical device, said medical electrical lead having a proximal and a distal end portion and a coil wound about said distal end, said coil to provide an inductive impedance in parallel with a capacitive impedance for reducing induced currents resulting in the presence of an electromagnetic field.
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- 17. The implantable medical device system of claim 17, wherein said inductive impedance and said capacitive impedance to form a filter to pass a sensor signal and to block said induced current.
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20. A method for trapping an radio frequency (RF) signal induced current on a medical electrical lead, comprising:
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providing a wound coil at a distal end of said medical electrical lead such that said coil provides an inductive impedance in parallel with a capacitive impedance to reduce said induced current. - View Dependent Claims (21, 22)
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Specification