Medical lead delivery device

• US 7,881,806 B2
• Filed: 03/30/2007
• Issued: 02/01/2011
• Est. Priority Date: 10/31/2006
• Status: Active Grant

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Senarith, Patrick, Bauer, Ryan T., Steingisser, H. Allan, Mersgotte, Pedro A., Horrigan, John B., Sommer, John L.
• Primary Examiner(s): Layno; Carl H
• Assistant Examiner(s): Stice; Paula J
• Application Number:
  US11/694,242
• Publication Number:
  US 20080242964A1
• Time in Patent Office: 1,404 Days
• Field of Search: 607 5-122, 604/2
• US Class Current: 607/119
• CPC Class Codes: A61B 5/283 Invasive
• CPC Class Codes: A61B 5/6852 Catheters
• CPC Class Codes: A61N 1/056 Transvascular endocardial electrode systems
• CPC Class Codes: A61N 2001/0585 Coronary sinus electrodes

Abstract

The medical lead delivery device combines features of a guidewire and a stylet in order to more easily and quickly deliver a lead to or through the coronary vein of a patient'"'"'s heart. The medical lead delivery device includes an elongated body, a controller, a first and second spring, and a sleeve. The elongated body includes a proximal end and a distal end. The controller is disposed at the proximal end and provides enhanced control of the distal tip of the elongated body.

Claims

1. A medical lead delivery device comprising:

an elongated body extending from a proximal end to a distal end, wherein the elongated body comprises a conductive material, and further wherein the elongated body further comprises a tapered section at the distal end of the elongated body;

a controller disposed on the elongated body;

a first coil extending from a proximal end to a distal end and surrounding at least a portion of the tapered section of the elongated body, wherein the distal end of the first coil is located closer to the distal end of the elongated body than the proximal end of the first coil, wherein the first coil comprises conductive material, and further wherein the proximal end of the first coil is electrically coupled to the tapered section of the elongated body;

a second coil extending from a proximal end to a distal end and surrounding at least a portion of the tapered section of the elongated body, wherein the second coil comprises conductive material, wherein the proximal end of the second coil is electrically coupled to the distal end of the first coil, wherein the distal end of the second coil is located closer to the distal end of the elongated body than the proximal end of the second coil, and further wherein at least a portion of the second coil is uninsulated so as to be operable for use in measuring electrical values of body tissue; and

insulative material surrounding at least the first coil such that the first coil is disposed between the insulative material and the elongated body and wherein the diameter of the first coil is less than the diameter of the second coil.

2. The medical lead delivery device of claim 1, wherein the medical lead delivery device further comprises a solder element electrically coupling the distal end of the elongated body to the distal end of the second coil forming a distal tip of the medical lead delivery device, and further wherein the distal tip extends distally from the distal end of the elongated body and the distal end of the second coil.

3. The medical lead delivery device of claim 1, wherein the medical lead delivery device further comprises a solder element electrically coupling the tapered section of the elongated body, the distal end of the first coil, and the proximal end of the second coil.

4. The medical lead delivery device of claim 1, wherein the medical lead delivery device further comprises a solder element electrically coupling the tapered section of the elongated body to the proximal end of the first coil.

5. The medical lead delivery device of claim 1, wherein the elongated body ranges in length from about 34 inches to about 51 inches.

6. The medical lead delivery device of claim 1, wherein the elongated body is about 34 inches.

7. The medical lead delivery device of claim 1, wherein the medical lead delivery device is a hybrid of a stylet and a guidewire.

8. The medical lead delivery device of claim 1, wherein the medical lead delivery device is a unitary element.

9. The medical lead delivery device of claim 1, wherein the medical lead delivery device is not a separate guidewire and a separate stylet.

10. The medical lead delivery device of claim 1, wherein the medical lead delivery device is adapted to insert a medical lead into a right atrium through to a coronary vein without using a stylet and a guidewire.

11. The medical lead delivery device of claim 1, wherein the controller is slideably adjustable along at least a portion of a length of the medical lead delivery device.

12. The medical lead delivery device of claim 1, wherein the insulative material comprises a sleeve.

13. The medical lead delivery device of claim 1, wherein the insulative material comprises a coating.

14. The medical lead delivery device of claim 1, wherein the diameter of the elongated body is about 0.014 inches or less.

15. The medical lead delivery device of claim 1, wherein the diameter of the first coil is smaller than the diameter of the second coil.

16. The medical lead delivery device of claim 1, wherein the medical lead delivery device further comprises a distal tip extending distally from the distal end of the second coil and the distal end of the elongated body, wherein the at least a portion of the second coil that is uninsulated is adjacent the distal tip, and further wherein the length of the at least a portion of the second coil that is uninsulated is greater than the length of the distal tip.

17. A medical lead delivery device comprising:

an elongated body extending from a proximal end to a distal end, wherein the elongated body comprises a conductive material, and wherein the elongated body further comprises a tapered section at the distal end of the elongated body;

a first coil extending from a proximal end to a distal end and surrounding at least a portion of the tapered section of the elongated body, wherein the distal end of the first coil is located closer to the distal end of the elongated body than the proximal end of the first coil, wherein the first coil comprises conductive material, and further wherein the proximal end of the first coil is electrically coupled to the tapered section of the elongated body;

a second coil extending from a proximal end to a distal end and surrounding at least a portion of the tapered section of the elongated body, wherein the distal end of the second coil is located closer to the distal end of the elongated body than the proximal end of the second coil, wherein the second coil comprises conductive material, wherein the proximal end of the second coil is electrically coupled to the distal end of the first coil, wherein at least a portion of the second coil is uninsulated so as to be operable for use in measuring electrical values of body tissue; and

insulative material surrounding at least the first coil, wherein the insulative material further surrounds the elongated body between the proximal end of the first coil and the proximal end of the elongated body such that at least a portion of the elongated body near the proximal end of the elongated body is configured for sampling electrical values therefrom and wherein the diameter of the first coil is less than the diameter of the second coil.

18. The medical lead delivery device of claim 17, wherein the medical lead delivery device further comprises a solder element electrically coupling the distal end of the elongated body to the distal end of the second coil forming a distal tip of the medical delivery device, and further wherein the distal tip extends distally from the distal end of the elongated body and the distal end of the second coil.

19. A medical lead delivery device of claim 18, wherein the distal tip is about 2-6 sq. mm.

20. The medical lead delivery device of claim 17, wherein the medical lead delivery device further comprises a solder element electrically coupling the tapered section of the elongated body, the distal end of the first coil, and the proximal end of the second coil.

21. The medical lead delivery device of claim 17, wherein the medical lead delivery device further comprises a solder element electrically coupling the tapered section of the elongated body to the proximal end of the first coil.

22. The medical lead delivery device of claim 17, wherein the insulative material comprises a sleeve.

23. The medical lead delivery device of claim 17, wherein the insulative material comprises a coating.

24. The medical lead delivery device of claim 17, wherein the diameter of the elongated body is about 0.014 inches or less.

25. The medical lead delivery device of claim 17, wherein the diameter of the first coil is smaller than the diameter of the second coil.

26. The medical lead delivery device of claim 17, wherein the medical lead delivery device further comprises a distal tip extending distally from the distal end of the second coil and the distal end of the elongated body, wherein the at least a portion of the second coil that is uninsulated is adjacent the distal tip, and further wherein the length of the at least a portion of the second coil that is uninsulated is greater than the length of the distal tip.