Medical electrical lead

• US 5,676,694 A
• Filed: 06/07/1996
• Issued: 10/14/1997
• Est. Priority Date: 06/07/1996
• Status: Expired due to Term

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Mabel, Mark, Laske, Timothy G., Ocel, Jon M., Viktora, Sandra F., Meregotte, Pedro A., Boser, Gregory A., Hjelle, Mark A., Shoberg, Bret R., Schaenzer, David G., Padgett, Clare E.
• Primary Examiner(s): Jastrzab, Jeffrey R.
• Application Number:
  US08/657,577
• Time in Patent Office: 494 Days
• Field of Search: 607/116, 607/119, 607/122, 607/123, 607/148, 128/642
• US Class Current: 607/122
• CPC Class Codes: A61N 1/0563 specially adapted for defibrillation or cardioversion

Abstract

A medical electrical lead having an elongated lead body provided with an internal longitudinally extending lumen carrying an elongated stranded or cabled conductor and an electrode coil, located on said lead body. The coil is coupled to the conductor by a conductive sleeve having a tubular portion which has an internal lumen through which the conductor passes and a groove or bore which engages only a portion of a turn or turns of the electrode coil, such that the coil is oriented generally perpendicular to the internal lumen of said sleeve and to the conductor.

Claims

1. A medical electrical lead comprising:

an elongated lead body provided with an internal longitudinally extending lumen and having a circumference;

an elongated conductor located in and extending along said lumen of said lead body;

an electrode coil having a plurality of turns, extending circumferentially around said lead body;

a conductive sleeve having a tubular portion located in the lumen of the lead body and which has an internal lumen through which said conductor passes, said conductor being coupled electrically to said sleeve, said sleeve further having means for engaging only a portion of a only a single said turn of said electrode coil, such that said portion of said turn of said coil passes generally perpendicular to said internal lumen of said sleeve, said portion extending circumferentially along said turn of said coil for less than one full turn.

2. A lead according to claim 1 wherein said engaging means comprises a groove formed in said sleeve, generally perpendicular to said internal lumen of said sleeve.

5. A lead according to claim 1 or claim 3 or claim 2 or claim 4 wherein said sleeve is provided with a protrusion extending from said tubular portion of said sleeve radially outward to an exterior surface of said lead body and wherein said engaging means is located on said protrusion.

6. A lead according to claim 1 or claim 3 or claim 2 or claim 4 wherein said electrode coil is welded to said sleeve.

7. A lead according to claim 1 or claim 3 or claim 2 or claim 4 wherein said tubular portion of said sleeve is crimped to said conductor.

3. A medical electrical lead comprising:

an elongated lead body provided with an internal longitudinally extending lumen;

an elongated conductor located in and extending along said lumen of said lead body;

an electrode coil having a plurality of turns, located on said lead body;

a conductive sleeve comprising a tubular portion located in said lumen of said lead body and which has an internal lumen through which said conductor passes, said conductor being coupled electrically to said sleeve, said sleeve further having means for engaging only a portion of a said turn of said electrode coil, such that said portion of said turn of said coil passes generally perpendicular to said internal lumen of said sleeve, wherein said engaging means comprises a bore through said sleeve, generally perpendicular to said internal lumen of said sleeve.

4. A medical electrical lead comprising:

an elongated lead body provided with an internal longitudinally extending lumen and having a circumference;

an elongated conductor located in and extending along said lumen of said lead body;

an electrode coil comprising a plurality of turns extending circumferentially around the lead body;

a conductive sleeve comprising a tubular portion located in said lumen of said lead body and which has an internal lumen through which said conductor passes, said conductor being coupled electrically to said sleeve, said sleeve further having means for engaging only a portion of a said turn of said electrode coil, such that said portion of said turn of said coil passes generally perpendicular to said internal lumen of said sleeve, wherein said engaging means comprises means for engaging only a portion of each of a plurality of turns of said electrode coil, each of said portions extending circumferentially along a said turn of said coil for less than one full turn.

8. A medical electrical lead comprising:

an elongated lead body provided with an internal longitudinally extending lumen;

an elongated conductor located in and extending along said lumen of said lead body;

an plurality of electrode coils, each having a having a plurality of turns and located on said lead body;

a conductive sleeve comprising a tubular portion located in said lumen of said lead body and which has an internal lumen through which said conductor passes, said conductor being coupled electrically to said sleeve, said sleeve further having means for engaging only a portion of a said turn of said electrode coil, such that said portion of said turn of said coil passes generally perpendicular to said internal tureen of said sleeve, wherein said engaging means comprises means for engaging only a portion of a turn of each of said plurality of electrode coils.