Lead anchors and associated systems and methods

• US 8,954,165 B2
• Filed: 01/25/2013
• Issued: 02/10/2015
• Est. Priority Date: 01/25/2012
• Status: Active Grant

• Current Assignee: Nevro Corporation
• Original Assignee: Nevro Corporation
• Inventors: Sharma, Vivek, Chitre, Yougandh, Walker, Andre B., Parker, Jon, Moore, Ellen, Villamil, Daniel
• Primary Examiner(s): Layno, Carl H
• Assistant Examiner(s): Wu, Eugene
• Application Number:
  US13/750,802
• Publication Number:
  US 20130204336A1
• Time in Patent Office: 746 Days
• Field of Search: 607/37, 607/117, 607125-127, 607130-132
• US Class Current: 607/117
• CPC Class Codes: A61N 1/0558 Anchoring or fixation means therefor
• CPC Class Codes: A61N 2001/0582 Suture sleeves

Abstract

The present technology is directed generally to a lead anchor for positioning and securing spinal cord modulation leads and associated systems and methods. In at least some contexts, the lead anchor includes a central lumen surrounded by a restriction feature. The restriction feature can interface with a tightening screw or other actuator and can be configured to provide a radial compressive fit around the lead body. In some embodiments, the clamp can be disengaged upon twisting or other unlocking motion to release the lead.

Claims

1. A lead anchor, comprising:

an implantable anchor sleeve having a lumen extending therethrough, the lumen being positioned to removably receive an implantable lead;

a securement device within the anchor sleeve, the securement device including a lead opening aligned with and positioned along the lumen of the anchor sleeve to removably receive the implantable lead;

a press member positioned within the securement device, the press member being slideable within the securement device toward the lead opening to clamp the implantable lead, and away from the lead opening to release the implantable lead;

a rotatable actuator threadably engaged with the press member to move the press member toward the lead opening when rotated in a first direction, and move the press member away from the lead opening when rotated in a second direction opposite the first direction, the rotatable actuator including a recess; and

a retention element fixedly carried by the securement device and projecting inwardly from the securement device and into the recess to at least restrict axial motion of the actuator toward and away from the lead opening.

2. The lead anchor of claim 1 wherein the retention element includes a pin projecting inwardly from the securement device into the recess to at least restrict axial motion of the actuator toward and away from the lead opening.

3. The lead anchor of claim 1 wherein the body of the securement device includes external grooves positioned to restrict relative motion between the securement device and the anchor sleeve.

4. The lead anchor of claim 1 wherein, the anchor sleeve has one or more suture eyelets positioned to receive suture thread to secure the anchor sleeve to patient tissue.

5. The lead anchor of claim 1 wherein the press member has a generally rectangular cross-sectional shape.

6. The lead anchor of claim 1 wherein the anchor sleeve is flexible.

7. The lead anchor of claim 1, further comprising the implantable lead.