Intrapericardial lead with precurved distal end portion
First Claim
1. A cardiac lead comprising:
- a lead body having a proximal portion and a flexible, pre-curved distal end portion configured to transition between a straightened state and a curved state; and
a first pre-curved flexible wire member having ends attached to spaced apart points along the distal end portion of the lead body, the flexible wire member configured to (a) assume a normally expanded state in response to the distal end portion of the lead body being in a curved state, wherein in the normally expanded state an intermediate portion of the flexible wire member is spaced apart from the distal end portion of the lead body, and to (b) assume a generally straightened state in response to the distal end portion of the lead body being in a straightened state, wherein in the generally straightened state the flexible wire member and the distal end portion of the lead body are disposed in a more parallel arrangement.
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Accused Products
Abstract
The intrapericardial lead includes a lead body having a proximal portion and a flexible, pre-curved distal end portion. The distal end portion carries at least one electrode assembly containing an electrode adapted to engage pericardial tissue. The distal end portion further carries a pre-curved flexible wire member having ends attached to spaced apart points along the distal end portion of the lead body, the flexible wire member having a normally expanded state wherein an intermediate portion of the wire member is spaced apart from the distal end portion, and a generally straightened state wherein the wire member and the distal end portion are disposed in a more parallel, adjacent relationship so as to present a small frontal area to facilitate delivery into the pericardial space. The wire member re-expands to its normal state after delivery into the pericardial space to anchor the distal end portion of the lead body relative to the pericardial tissue.
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Citations
18 Claims
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1. A cardiac lead comprising:
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a lead body having a proximal portion and a flexible, pre-curved distal end portion configured to transition between a straightened state and a curved state; and a first pre-curved flexible wire member having ends attached to spaced apart points along the distal end portion of the lead body, the flexible wire member configured to (a) assume a normally expanded state in response to the distal end portion of the lead body being in a curved state, wherein in the normally expanded state an intermediate portion of the flexible wire member is spaced apart from the distal end portion of the lead body, and to (b) assume a generally straightened state in response to the distal end portion of the lead body being in a straightened state, wherein in the generally straightened state the flexible wire member and the distal end portion of the lead body are disposed in a more parallel arrangement. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification