Positive anchoring A-V lead
First Claim
1. A body implantable lead comprising:
- an atrial conductor having a proximal end and a distal end;
a ventricular conductor having a proximal end and a distal end;
an outer insulative sheath covering a portion of said atrial conductor and a portion of said ventricular conductor;
a ventricular electrode coupled to the distal end of said ventricular conductor;
a first electrical connector coupled to the proximal end of said ventricular conductor;
a second electrical connector coupled to the proximal end of said atrial conductor; and
an atrial electrode assembly coupled to said distal end of said atrial conductor and including means for actively affixing said atrial electrode assembly to body tissue.
1 Assignment
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Accused Products
Abstract
A single pass atrial-ventricular transvenous pacing lead wherein the atrial branch has a positive fixation device. The proximal end of the lead has a standard electrical connector for coupling both atrial and ventricular electrodes to an implantable pulse generator. The lead is bifurcated at a point near or above the superior vena cava during normal transvenous insertion. The atrial and ventricular branches are of a fixed length from the point of bifurcation to the distal tip. The ventricular branch preferably employs a passive fixation device such as tines to maintain the ventricular electrode within the right ventricular apex. The atrial branch is positioned in the normal manner under control of a stylet to obtain optimal sensing and stimulation thresholds. This position is maintained using an active fixation device. Preferably the active fixation device is a helix which is screwed into the atrial wall by rotating the atrial connector pin and conductor coil.
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Citations
15 Claims
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1. A body implantable lead comprising:
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an atrial conductor having a proximal end and a distal end; a ventricular conductor having a proximal end and a distal end; an outer insulative sheath covering a portion of said atrial conductor and a portion of said ventricular conductor; a ventricular electrode coupled to the distal end of said ventricular conductor; a first electrical connector coupled to the proximal end of said ventricular conductor; a second electrical connector coupled to the proximal end of said atrial conductor; and an atrial electrode assembly coupled to said distal end of said atrial conductor and including means for actively affixing said atrial electrode assembly to body tissue. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A body implantable lead comprising:
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an atrial conductor having a proximal end and a distal end; a ventricular conductor having a proximal end and a distal end, said ventricular conductor mounted fixedly parallel to said atrial conductor between the proximal end of said atrial conductor and a bifurcation point intermediate the proximal end and the distal end of said atrial conductor wherein said atrial and ventricular conductors diverge distal to said bifurcation point; an insulative sheath means covering said atrial and ventricular conductors, for maintaining said atrial and ventricular conductors in fixed longitudinal relationship; a first electrical connector coupled to the proximal end of said atrial conductor; a second electrical connector coupled to the proximal end of said ventricular conductor; a ventricular electrode coupled to the distal end of said ventricular conductor; and an atrial electrode assembly coupled to the distal end of said atrial conductor including active fixation means for maintaining said atrial electrode in contact with body tissue. - View Dependent Claims (11, 12, 13, 14, 15)
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Specification