Novel lead retention means

• US 20050171588A1
• Filed: 06/17/2004
• Published: 08/04/2005
• Est. Priority Date: 02/04/2004
• Status: Active Grant

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Sommer, John L., Erlebacher, Jay A., Wahlstrom, Dale A.
• Granted Patent: US 7,463,933 B2
• Time in Patent Office: Days
• US Class Current: 607/126
• CPC Class Codes: A61N 1/057 Anchoring means; Means for fixing the head inside the heart
• CPC Class Codes: A61N 2001/0585 Coronary sinus electrodes

Abstract

An elongate body of a medical device includes at least one retaining segment extending along a length of the body, the retaining segment including a plurality of fish-like scales directed in a first common direction.

Claims

1. A medical device, comprising:

an elongate body;

a first retaining segment extending along a length of the body, forming a first fixed portion of an outer surface of the body and including a proximal end and a first plurality of projections extending from the first portion of the outer surface, each of the first plurality of projections including a terminal edge directed toward the proximal end; and

a second retaining segment extending along another length of the body, forming a second fixed portion of an outer surface of the body and including a distal end and a second plurality of projections extending from the second fixed portion of the outer surface, each of the second plurality of projections including a terminal edge directed toward the distal end;

wherein the first plurality of projections and the second plurality of projections are adapted to interfere with a wall of a generally tubular vessel to retain the body within the vessel.

2. The device of claim 1, wherein the first retaining segment is positioned proximal to the second retaining segment.

3. The device of claim 1, wherein the first retaining segment is positioned distal to the second retaining segment.

4. The device of claim 1, wherein the first retaining segment and the second retaining segment each extend about an entire circumference of the body.

5. The device of claim 1, wherein the first retaining segment and the second retaining segment each extend about a portion of a circumference of the body.

6. The device of claim 1, wherein the body includes an elongate outer sheath and the first retaining segment and the second retaining segment are each an integral part of the sheath.

7. The device of claim 1, wherein the first retaining segment and the second retaining segment are formed on a collar positioned about the body.

8. The device of claim 7, wherein the collar is formed from a bioabsorbable material.

9. The device of claim 1, further comprising a dissolvable coating temporarily covering the first plurality of projections and the second plurality of projections.

10. The device of claim 1, further comprising a tubular structure deployable over the first plurality of projections and the second plurality of projections.

11. The device of claim 1, wherein the body includes at least one pre-formed curve in proximity to the first retaining segment and the second retaining segment.

12. The device of claim 1, wherein the first plurality of projections and the second plurality of projections are barb-like.

13. The device of claim 1, wherein the first plurality of projections and the second plurality of projections are fish scale-like.

14. A medical device comprising

an elongate body;

and

at least one retaining segment extending along a length of the body, the retaining segment including a plurality of fish-like scales directed in a first common direction.

15. The device of claim 14 further comprising a second retaining segment extending along a length of the body, the second retaining segment including a plurality of fish-like scales directed in a second common direction opposite to the first common direction.

16. The device of claim 14 wherein the fish-like scales are disposed in an overlapping pattern.

17. The device of claim 14 wherein the fish-like scales are disposed in multiple circumferential rows and each of the circumferential rows of scales is disposed in offset relation to an adjacent circumferential row of scales.

18. The device of claim 14 wherein the elongate body includes a lead body having the retaining segment thereon, an electrode at one end of the lead body, a connector at an opposite end of the lead body from the electrode and a conductor electrically coupling the electrode to the connector.

19. The device of claim 14 wherein the lead body has at least one preformed curved section in proximity to the retaining segment.

20. The device of claim 19 wherein the curved section is disposed distally of the retaining segment.

21. The device of claim 19 wherein the retaining segment is disposed in the curved section.

22. The device of claim 14 wherein the lead body has a serpentine shape along the length thereof.

23. The device of claim 14 further comprising a dissolvable coating disposed over the retaining segment.

24. The device of claim 14 further comprising a thin-walled tube disposed in concentric relation about the retaining segment.

25. The device of claim 14 wherein the elongate body is sized to move within a vessel and the retaining segment is characterized in allowing movement of the elongate body within the vessel in the common direction to an implanted position and preventing movement of the elongate body from the implanted position in an opposite direction to the common direction.