MULTI-LOOP COUPLING FOR LEAD EXTENSION AND EXTRACTION

• US 20160184580A1
• Filed: 12/29/2015
• Published: 06/30/2016
• Est. Priority Date: 12/30/2014
• Status: Active Grant

• Current Assignee: Spectranetics Corporation (Koninklijke Philips N.V.)
• Original Assignee: Spectranetics Corporation (Koninklijke Philips N.V.)
• Inventors: Grace, Kenneth P.
• Granted Patent: US 10,105,533 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61B 17/221 Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions surgical snare instruments A61B17/32056
• CPC Class Codes: A61B 17/32056 Surgical snare instruments for removing or smashing calculi A61B2017/2212; tonsillotomes A61B17/26
• CPC Class Codes: A61B 2017/00358 Snares for grasping
• CPC Class Codes: A61B 2017/2212 having a closed distal end, e.g. a loop
• CPC Class Codes: A61N 1/056 Transvascular endocardial electrode systems
• CPC Class Codes: A61N 1/0587 Epicardial electrode systems; Endocardial electrodes piercing the pericardium
• CPC Class Codes: A61N 2001/0578 having means for removal or extraction

Abstract

A device for extending a lead according to an embodiment of the present disclosure includes a body, wherein the body is elongated and includes at least two apertures; a first filament loop comprising a filament, the filament extending along the inner surface of the body and through at least one of the at least two apertures, the first filament loop extending outside the outer surface of the body; a second filament loop extending outside the outer surface of the body; the first and second filament loops arranged so as to receive therethrough a lead, the first and second filament loops being tightenable about the lead in a manner that grips the lead between the first and second filament loops and an outer surface of the lead; and a tether coupled to the lead via one or more of the body, the first filament loop, and the second filament loop.

Claims

1. A device for extending a lead, comprising:

a body, wherein the body is elongated and includes at least two apertures formed through and between an inner surface and an outer surface of the body;

a first filament loop comprising a filament, the filament extending along the inner surface of the body and through at least one of the at least two apertures, the first filament loop extending outside the outer surface of the body;

a second filament loop extending outside the outer surface of the body;

the first and second filament loops arranged so as to receive therethrough a lead, the first and second filament loops being tightenable about the lead in a manner that grips the lead between the first and second filament loops and an outer surface of the lead; and

a tether coupled to the lead via one or more of the body, the first filament loop, and the second filament loop, the tether configured to extend further proximally than a proximal-most end of the lead, the tether further configured to transfer at least a portion of a tension force applied to the tether to the lead via the one or more of the body, the first filament loop, and the second filament loop.

2. The device of claim 1, wherein the filament is a first filament, wherein the second filament loop comprises a second filament.

3. The device of claim 1, wherein the body is tubular and includes an opening at a distal end of the body, and wherein the second filament loop extends through the opening.

4. The device of claim 1, wherein the first filament loop is tightenable independently of the second filament loop.

5. The device of claim 1, wherein the first and second filament loops both comprise the filament, and wherein the first and second filament loops are tightenable about the lead simultaneously upon application of tension to the filament.

6. The device of claim 1, further comprising a third filament loop extending outside the outer surface of the body, the first, second, and third filament loops arranged so as to receive therethrough the lead, the first, second, and third filament loops being tightenable about the lead in the manner that grips the lead between the first, second, and third filament loops and the outer surface of the lead.

7. The device of claim 1, wherein the filament is of a construct selected from the group consisting of monofilament wire, multifilament wire, monofilament suture, multifilament suture, and braided strands.

8. The device of claim 1, wherein each of the first and second filament loops comprise at least a half twist outside the outer surface of the body.

9. The device of claim 1, wherein the filament is fixedly coupled to the body on one side of the first filament loop.

10. A method for extending a lead, comprising:

inserting a first filament loop and a second filament loop over a lead, the first and second filament loops extending outside an outer surface of a body, wherein the body is elongated and includes at least two apertures formed through and between an inner surface and the outer surface of the body, the first filament loop comprising a filament, the filament extending along the inner surface of the body and through at least one of the at least two apertures, the first filament loop extending outside the outer surface of the body;

tightening the first and second filament loops about the lead in a manner that grips the lead between the first and second filament loops and an outer surface of the lead; and

applying tension to the lead by applying tension to a tether that is coupled to the lead via the first and second filament loops when the first and second filament loops are tightened about the lead.

11. The method of claim 10, wherein tightening the first and second filament loops about the lead comprises applying tension to a pull loop extending proximally from the body and coupled to the first and second filament loops.

12. The method of claim 11, wherein tightening the first and second filament loops about the lead comprises applying tension to a sleeve translatably carried by the body and fixedly coupled to pull loop.

13. The method of claim 10, wherein tightening the first and second filament loops about the lead comprises applying tension to a sleeve translatably carried by the body and coupled to the first and second filament loops.

14. The method of claim 10, further comprising, prior to inserting the first filament loop and the second filament loop over the lead:

coupling a device comprising the first filament loop, the second filament loop, and the body to a deployment sheath via the first and second filament loops; and

deploying the device in a desired location by moving the deployment sheath to the desired location.

15. The method of claim 14, wherein coupling the device to the deployment sheath via the first and second filament loops comprises:

inserting the first filament loop and the second filament loop over the deployment sheath; and

tightening the first and second filament loops about the deployment sheath in a manner that grips the deployment sheath between the first and second filament loops and an outer surface of the deployment sheath.

16. The method of claim 15, further comprising, prior to inserting the first filament loop and the second filament loop over the lead, loosening the first filament loop and the second filament loop from the deployment sheath.

17. The method of claim 10, wherein tightening the first and second filament loops comprises:

tightening the first filament loop about the lead; and

independently tightening the second filament loop about the lead.

18. The method of claim 10, wherein the first and second filament loops both comprise the filament, and wherein tightening the first and second filament loops comprises applying tension to the filament to simultaneously tighten the first and second filament loops about the lead.