Multi-electrode lead with elongated electrode
AssigneeSorin Crm SAS
InventorJEAN-FRANÇOIS OLLIVIER
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Abstract
The invention relates to a multi-electrode lead device that comprises an interelectrode portion between a distal first electrode and a proximal second electrode, wherein the interelectrode portion comprises an elongated surface electrode for right bundle branch pacing, the elongated surface electrode having a reduced exposed area and at least one non-exposed portion to obtain an increased current density, wherein the elongated surface electrode is connected to a single pacing input terminal of a proximal lead connector. The elongated surface electrode with reduced exposed area enables lower energy consumption by achieving the increased current density and provides an enhanced right bundle branch pacing area for various anatomies.
Claims14
A lead device (200) for left and/or right bundle branch pacing, the lead device (200) comprising:
- a distal first electrode (30) configured to be inserted into a septum of a heart by puncturing and to be used for left bundle branch pacing;
- a proximal second electrode (206);
- and
- an interelectrode portion between the distal first electrode (30) and the proximal second electrode (206);
- wherein the interelectrode portion comprises an elongated surface electrode (208a-c;
- 209;
- 212) for right bundle branch pacing, the elongated surface electrode (208a-c;
- 209;
- 212) having a reduced exposed area (208a, 208b) and at least one non-exposed portion (208c;
- 213);
- and
- wherein the elongated surface electrode (208a-c;
- 209;
- 212) is connected to only one pacing input terminal of a proximal lead connector (220).
The lead device (200) of any one of the preceding claims, wherein the distal first electrode is formed by a fixation helix (30).
The lead device (200) of any one of the preceding claims, wherein the proximal second electrode is an anode (206).
The lead device (200) of any of the preceding claims, wherein the interelectrode portion has a conical shape.
The lead device (200) of any of the preceding claims, wherein the body (211) of the lead device (200) has a coradial structure.
The lead device (200) of any of the preceding claims, wherein the axial distance between the distal end of the fixation helix (30) and the distal end of the elongated surface electrode (208 a-c;
- 209;
- 212) ranges from 7 to 12 mm, the axial length of the elongated surface electrode (208 a-c;
- 209;
- 212) ranges from 7 to 11 mm, and the axial distance between the distal end of the elongated surface electrode (208a-c;
- 209;
- 212) and the distal end of the proximal second electrode (206) ranges from 10 to 20 mm.
The lead device (200) of any of the preceding claims, wherein the elongated surface electrode (208a-c;
- 209;
- 212) is configured to obtain a size of a resultant limited active electrode surface within a range of 2 to 8 mm2.
Dependencies are inferred from the claim text.