Expandable electrode for coronary venous leads
First Claim
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1. A cardiac lead positionable within the vasculature of the heart for use in conjunction with a cardiac rhythm management device, said cardiac lead comprising:
- a. a lead body;
b. a balloon electrode having a first retracted position and a second expanded position in which said balloon electrode is in contact with a vessel wall when the lead is positioned within the vasculature of the heart; and
c. a water-perineable material within the balloon electrode that reacts with body fluids to cause the balloon electrode to expand by the osmotic process for causing said balloon electrode to move from said first retracted position to said second extended position.
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Abstract
Expandable electrodes for intravascular leads permit the electrodes to be placed and retained in the vasculature of the left side of the heart. Such electrodes can be in the form of a balloon, an expandable wire coil, or other expandable shapes.
168 Citations
18 Claims
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1. A cardiac lead positionable within the vasculature of the heart for use in conjunction with a cardiac rhythm management device, said cardiac lead comprising:
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a. a lead body; b. a balloon electrode having a first retracted position and a second expanded position in which said balloon electrode is in contact with a vessel wall when the lead is positioned within the vasculature of the heart; and c. a water-perineable material within the balloon electrode that reacts with body fluids to cause the balloon electrode to expand by the osmotic process for causing said balloon electrode to move from said first retracted position to said second extended position. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A cardiac lead positionable within the vasculature of the heart for use in conjunction with a cardiac rhythm management device, said cardiac lead comprising:
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a. a lead body; b. a ribbon wire coil electrode having a first retracted position and a second expanded position in which said electrode is in contact with a vessel wall when the lead is positioned within the vasculature of the heart; and c. adaptation means for causing said electrode to move from said first retracted position to said second extended position.
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8. A cardiac lead positionable within the vasculature of the heart for use in conjunction with a cardiac rhythm management device, said cardiac lead comprising:
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a. a lead body; b. a nickel-titanium coil electrode having a first retracted position and a second expanded position in which said electrode is in contact with a vessel wall when the lead is positioned within the vasculature of the heart; and c. adaptation means for causing said electrode to move from said first retracted position to said second extended position.
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9. A cardiac lead positionable within the vasculature of the heart for use in conjunction with a cardiac rhythm management device, said cardiac lead comprising:
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a. a lead body; b. a coil electrode having a first retracted position and a second expanded position in which said electrode is in contact with a vessel wall when the lead is positioned within the vasculature of the heart; and c. an outer member that surrounds a portion of the lead body said lead body extending beyond said outer member and said coil electrode coupled to said lead body and said outer member for causing said coil electrode to move from said first retracted position to said second extended position. - View Dependent Claims (10, 11)
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12. A cardiac lead positionable within the vasculature of the heart for use in conjunction with a cardiac rhythm management device, said cardiac lead comprising:
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a. a lead body; b. a round or ribbon wire NiTi coil electrode having a first retracted position and a second expanded position in which said electrode is in contact with a vessel wall when the lead is positioned within the vasculature of the heart; and c. adaptation means for causing said coil electrode to move from said first retracted position to said second extended position.
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13. A cardiac lead positionable within the vasculature of the heart for use in conjunction with a cardiac rhythm management device, said cardiac lead comprising:
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a. a lead body included a lumen and an orifice extending between the lumen and the exterior of the lead; b. an electrode having a first retracted position and a second expanded position in which said electrode is in contact with a vessel wall when the lead is positioned within the vasculature of the heart; and c. adaptation means for causing said electrode to move from said first retracted position to said second extended position. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification