Cardiac lead with zone insulated electrodes
First Claim
Patent Images
1. A cardiac lead electrode, comprising:
- an electrode member including an elongate tubular shank for connecting to an end of a cardiac lead sleeve, an annular member for coupling to the exterior of a cardiac lead sleeve and a distal enlarged diameter tip with a circular, flat end surface, the distal tip having an overall blunt profile and peripherally spaced slots that define peripherally spaced projections; and
a coating applied to the electrode member, the coating being composed of an electrically insulating material and covering a first portion of the exterior of the electrode member while leaving a preselected portion thereof exposed.
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Abstract
An electrode for a cardiac lead and method of making the same are provided. The electrode includes an electrode member and a coating applied to the electrode member. The coating is composed of an electrically insulating material and covers a first portion of the exterior of the electrode member while leaving a preselected second portion thereof exposed. The second or exposed portion enhances the impedance of the electrode, resulting in power savings and extended life spans for implantable stimulation and sensing devices. Exemplary materials for the coating includes diamond-like carbon and sapphire.
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Citations
40 Claims
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1. A cardiac lead electrode, comprising:
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an electrode member including an elongate tubular shank for connecting to an end of a cardiac lead sleeve, an annular member for coupling to the exterior of a cardiac lead sleeve and a distal enlarged diameter tip with a circular, flat end surface, the distal tip having an overall blunt profile and peripherally spaced slots that define peripherally spaced projections; and
a coating applied to the electrode member, the coating being composed of an electrically insulating material and covering a first portion of the exterior of the electrode member while leaving a preselected portion thereof exposed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 32, 38, 39, 40)
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10. A cardiac stimulator lead comprising:
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a conductor wire having an electrically insulating coating applied thereto;
a connector for coupling the conductor wire to a cardiac stimulator;
a tubular insulating cardiac lead sleeve disposed around the conductor wire and coupled to the electrode member and the connector; and
an electrode member coupled to the conductor wire, the electrode member comprising an elongate tubular shank for connecting to an end of the cardiac lead sleeve, an annular member for coupling to the exterior of the cardiac lead sleeve and a distal enlarged diameter tip with a circular, flat end surface, the distal tip having an overall blunt profile and peripherally spaced slots that define peripherally spaced projections, the electrode member further having a coating applied thereto, the coating being composed of an electrically insulating material and covering a first portion of the exterior of the electrode member while leaving a preselected portion thereof exposed. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 33)
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19. A method of fabricating a high impedance cardiac lead electrode, comprising the steps of:
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providing an electrode member comprising an elongate tubular shank for connecting to an end of a cardiac lead sleeve, an annular member for coupling to the exterior of a cardiac lead sleeve and a distal enlarged diameter tip with a circular, flat end surface, the distal tip having an overall blunt profile and peripherally spaced slots that define peripherally spaced projections; and
coating a first portion of the electrode member with an electrically insulating material while leaving a preselected second portion thereof exposed. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 34)
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35. A cardiac lead electrode, comprising:
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an electrode member including an elongated tubular shank for connecting to an end of a cardiac lead sleeve, an annular member for coupling to the exterior of a cardiac lead sleeve and a distal enlarged diameter tip with a circular, flat end surface, the distal tip having an overall blunt profile and peripherally spaced slots that define peripherally spaced projections, the distal tip being of an enlarged diameter relative to the elongated tubular shank, the elongated tubular shank being of a substantially longer length than the enlarged diameter tip, and the annular member being defined by a transition from the elongated tubular shank to the enlarged diameter tip; and
a coating applied to the electrode member, the coating being composed of an electrically insulating material and covering a first portion of the exterior of the electrode member while leaving a preselected portion thereof exposed.
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36. A cardiac stimulator lead comprising:
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a conductor wire having an electrically insulating coating applied thereto;
a connector for coupling the conductor wire to a cardiac stimulator;
a tubular insulating cardiac lead sleeve disposed around the conductor wire and coupled to the electrode member and the connector; and
an electrode member coupled to the conductor wire, the electrode member comprising an elongated tubular shank for connecting to an end of the cardiac lead sleeve, an annular member for coupling to the exterior of the cardiac lead sleeve and a distal enlarged diameter tip with a circular, flat end surface, the distal tip having an overall blunt profile and peripherally spaced slots that define peripherally spaced projections, the distal tip being of an enlarged diameter relative to the elongated tubular shank, and the elongated tubular shank being of a substantially longer length than the enlarged diameter tip, and the annular member being defined by a transition from the elongated tubular shank to the enlarged diameter tip, the electrode member further having a coating applied thereto, the coating being composed of an electrically insulating material and covering a first portion of the exterior of the electrode member while leaving a preselected portion thereof exposed.
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37. A method of fabricating a high impedance cardiac lead electrode, comprising:
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providing an electrode member comprising an elongated tubular shank for connecting to an end of a cardiac lead sleeve, an annular member for coupling to the exterior of a cardiac lead sleeve and a distal enlarged diameter tip with a circular, flat end surface, the distal tip having an overall blunt profile and peripherally spaced slots that define peripherally spaced projections, the distal tip being of an enlarged diameter relative to the elongated tubular shank, and the elongated tubular shank being of a substantially longer length than the enlarged diameter tip, and the annular member being defined by a transition from the elongated tubular shank to the enlarged diameter tip; and
coating a first portion of the electrode member with an electrically insulating material while leaving a preselected second portion thereof exposed.
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Specification