Means to securely fixate pacing leads and/or sensors in vessels
First Claim
1. A cardiac lead system adapted for fixation to a vessel, the system comprising:
- an expandable fixation mechanism having an expanded position adapted to engage an inner surface of the vessel; and
a lead member having a proximal end and a distal end, the distal end comprising a helix structure,wherein the helix structure removably engages the fixation mechanism by rotation of the helix structure into the fixation mechanism.
1 Assignment
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Accused Products
Abstract
According to embodiments of the present invention, a cardiac lead system adapted for fixation to a vessel including an expandable fixation mechanism adapted to engage an inner surface of the vessel and a lead member comprising an anchor structure at distal end, the anchor structure configured to removably engage with fixation mechanism. Such anchor structure may be helical, and may removably engage fixation mechanism upon rotation or an application of torque, and may be extendable and/or retractable. Fixation mechanism may be polymer coated weave and/or mesh to trap anchor structure. Lead member and/or fixation mechanism may include electrodes and/or sensors, and lead member may include L-shape, S-shape, spiral, and/or sinusoidal shape for positioning of electrodes and/or sensors or for facilitated engagement of anchor structure. A guide wire attached to fixation mechanism during deployment may, prior to detachment, serve to guide lead member to a target site at fixation mechanism.
83 Citations
25 Claims
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1. A cardiac lead system adapted for fixation to a vessel, the system comprising:
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an expandable fixation mechanism having an expanded position adapted to engage an inner surface of the vessel; and a lead member having a proximal end and a distal end, the distal end comprising a helix structure, wherein the helix structure removably engages the fixation mechanism by rotation of the helix structure into the fixation mechanism. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A cardiac lead system adapted for fixation to a vessel, the system comprising:
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an expandable fixation mechanism having an expanded position adapted to engage an inner surface of the vessel; and a lead member having a proximal end and a distal end, the distal end comprising an anchor structure, wherein the anchor structure is substantially rigid and removably engages the fixation mechanism by penetrating the fixation mechanism. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A cardiac lead system adapted for fixation to a vessel, the system comprising:
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an fixation mechanism having an inner surface, an outer surface, and an expanded position in which the outer surface of the fixation mechanism engages an inner surface of the vessel; and a lead member having a proximal end and a distal end, the distal end comprising an anchor structure, wherein the anchor structure removably engages the inner surface of the fixation mechanism by penetrating the fixation mechanism. - View Dependent Claims (23, 24, 25)
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Specification