Epicardial and myocardial leads for implanting in the heart by thoracotomy or port access surgeries with detachable electrode tip
First Claim
1. An implantable, epicardial lead adapted to conduct electrical stimulation from an electrical stimulator to an epicardial site of the heart and to conduct electrical signals of the heart from the epicardial site to the electrical stimulator, the implantable epicardial lead comprising:
- an elongated lead body defining a lead body distal end and a lead body proximal end, and comprising a connector at the lead body proximal end for mechanical and electrical attachment to the electrical stimulator, and further comprising a conductor extending between the lead body distal end and lead body proximal end; and
an electrode head provided at the lead body distal end including an electrode tip member adapted to be fixated to the outside of the heart and an electrode backing member fixed to the distal end of the lead body and releasably attachable to the electrode tip member to establish electrical contact between the electrode tip member and the lead body, a planar surface at a distal end of the electrode tip member to establish contact with the outside of the heart;
a tip electrode disposed at the planar surface of the electrode tip member, the elongated lead body being coupled to the electrode head such that the lead body distal end is moveable from a first position wherein a longitudinal axis of the lead body distal end is substantially perpendicular to the planar surface to a second position wherein the longitudinal axis of the lead body distal end is substantially parallel to the planar surface when the tip electrode is in electrical contact with the outside of the heart;
wherein the electrode tip member comprises;
a first non-conductive and disc-shaped base;
the tip electrode mounted on and projecting away from the first base in one direction; and
the first base having a first mounting member directed away from the tip electrode; and
wherein the electrode backing member comprises;
a second non-conductive and disc-shaped base; and
a second mounting member cooperatively received on the second base and adapted for mounting engagement with the first mounting member for releasably but firmly integrating the electrode tip member and the electrode backing member as a unit.
1 Assignment
0 Petitions
Accused Products
Abstract
A medical electrical lead to conduct electrical stimulation and/or signals between an electrical stimulator and a heart site includes an elongated lead body extending to a proximal connector for attachment to the electrical stimulator. An electrode head at the distal end includes an electrode tip member for fixation to the heart and an electrode backing member fixed to the lead body is releasably attachable to the electrode tip member for transmission of electrical signals between the heart and the electrical stimulator. The electrode tip member may include a first non-conductive base with an outwardly projecting tip electrode and a first mounting member projecting oppositely away from the non-conductive base. The electrode backing member includes a second non-conductive base and a second mounting member thereon adapted for mounting engagement with the first mounting member for selectively releasably but firmly integrating the electrode tip member and the electrode backing member.
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Citations
16 Claims
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1. An implantable, epicardial lead adapted to conduct electrical stimulation from an electrical stimulator to an epicardial site of the heart and to conduct electrical signals of the heart from the epicardial site to the electrical stimulator, the implantable epicardial lead comprising:
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an elongated lead body defining a lead body distal end and a lead body proximal end, and comprising a connector at the lead body proximal end for mechanical and electrical attachment to the electrical stimulator, and further comprising a conductor extending between the lead body distal end and lead body proximal end; and an electrode head provided at the lead body distal end including an electrode tip member adapted to be fixated to the outside of the heart and an electrode backing member fixed to the distal end of the lead body and releasably attachable to the electrode tip member to establish electrical contact between the electrode tip member and the lead body, a planar surface at a distal end of the electrode tip member to establish contact with the outside of the heart; a tip electrode disposed at the planar surface of the electrode tip member, the elongated lead body being coupled to the electrode head such that the lead body distal end is moveable from a first position wherein a longitudinal axis of the lead body distal end is substantially perpendicular to the planar surface to a second position wherein the longitudinal axis of the lead body distal end is substantially parallel to the planar surface when the tip electrode is in electrical contact with the outside of the heart; wherein the electrode tip member comprises; a first non-conductive and disc-shaped base; the tip electrode mounted on and projecting away from the first base in one direction; and the first base having a first mounting member directed away from the tip electrode; and wherein the electrode backing member comprises; a second non-conductive and disc-shaped base; and a second mounting member cooperatively received on the second base and adapted for mounting engagement with the first mounting member for releasably but firmly integrating the electrode tip member and the electrode backing member as a unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An implantable, epicardial lead adapted to conduct electrical stimulation from an electrical stimulator to an epicardial site of the heart and to conduct electrical signals of the heart from the epicardial site to the electrical stimulator, the implantable epicardial lead comprising:
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an elongated lead body defining a lead body distal end and a lead body proximal end, and comprising a connector at the lead body proximal end for mechanical and electrical attachment to the electrical stimulator, and further comprising a conductor extending between the lead body distal end and lead body proximal end; and an electrode head provided at the lead body distal end including an electrode tip member adapted to be fixated to the outside of the heart and an electrode backing member fixed to the distal end of the lead body and releasably attachable to the electrode tip member to establish electrical contact between the electrode tip member and the lead body, a planar surface at a distal end of the electrode tip member to establish contact with the outside of the heart; a tip electrode disposed at the planar surface of the electrode tip member, the elongated lead body being coupled to the electrode head such that the lead body distal end is moveable from a first position wherein a longitudinal axis of the lead body distal end is substantially perpendicular to the planar surface to a second position wherein the longitudinal axis of the lead body distal end is substantially parallel to the planar surface when the tip electrode is in electrical contact with the outside of the heart; wherein the electrode tip member comprises; a first non-conductive base; the tip electrode mounted on and projecting away from the first non-conductive base in one direction; and the first base having a first mounting member directed away from the tip electrode, a longitudinal axis of the first mounting member being parallel to a longitudinal axis of the tip electrode; and wherein the electrode backing member comprises; a second non-conductive base; and a second mounting member cooperatively received on the second non-conductive base and adapted for mounting engagement with the first mounting member for releasably but firmly integrating the electrode tip member and the electrode backing member as a unit, a longitudinal axis of the second mounting member being parallel to the longitudinal axis of the first mounting member and the longitudinal axis of the tip electrode. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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Specification