Method and apparatus for shielding coating for MRI resistant electrode systems
OwnerVolkert A. Zeijlemakerinventor
Life of this patent
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Abstract
A medical electrical lead is disclosed comprising an electrically-conductive shield adjacent to at least a portion of the lead body. The shield is adapted to dissipate energy when the lead is subjected to an electromagnetic field. The shield may be further coupled to a housing of an implantable medical device to enhance energy dissipation capabilities. In another embodiment, a method comprises receiving electromagnetic energy within a shield coating surrounding a portion of the lead. The energy is then dissipated in a manner that protects tissue surrounding the lead from injury.
Claims22
A medical electrical lead, comprising:
- an elongated body;
- a conductor extending within the elongated body;
- and
- an electrically-conductive shield positioned adjacent at least a portion of the elongated body to shield the conductor from electromagnetic energy.
The lead of claim 7, wherein the electrically-conductive shield is sized so that stiffness of the elongated body remains substantially unaffected by the electrically-conductive shield.
An apparatus, comprising:
- an implantable medical device (IMD);
- an electrical lead connected to the IMD;
- and
- a shield coating adjacent to at least a portion of the exterior of the lead to reduce the effects of electromagnetic energy on the lead.
A method of shielding a medical electrical lead, comprising:
- providing an electrically-conductive shield proximate a portion of the lead;
- subjecting the lead to electromagnetic energy;
- and
- dissipating the energy with the electrically-conductive shield to thereby reduce the amount of energy received by the medical electrical lead.
A method of shielding a medical electrical lead from radio-frequency energy, comprising:
- providing an electrical lead comprising at least one conductor surrounded by a layer of insulative material;
- and
- applying a conductive shield coating to the lead covering at least a portion of the insulative material.
A method of using a shielded medical electrical lead, comprising:
- inserting a lead comprising a conductive shield coating within a patient's body;
- exposing the shield coating to electromagnetic energy;
- and
- utilizing the shield coating to dissipate the energy.
A method of shielding a patient from the effects of electromagnetic energy absorbed by a medical electrical lead, comprising:
- providing a lead having at least one electrode wire surrounded by a layer of insulative material;
- providing a shield coating over at least a portion of the insulative material, wherein the shield coating is adapted to receive electromagnetic energy, and wherein the shield coating is insulated from direct electrical communication with the electrode wire;
- inserting the medical electrical lead within the body of a patient;
- exposing the shield coating to electromagnetic energy;
- and
- dissipating the energy received by the shield coating, thus reducing the quantity of electromagnetic energy absorbed by the at least one electrode wire.
A method of manufacturing a shielded medical lead, comprising:
- providing a lead having at least one conductor surrounded by a layer of insulative material;
- and
- applying a shield coating over at least a portion of the insulative material, wherein the shield coating is adapted to receive electromagnetic energy, and wherein the shield coating is insulated from direct electrical communication with the electrode wire.
Dependencies are inferred from the claim text.