IP Library › Granted Patent US 12,329,962
Granted Patent B2
US 12,329,962 · App. 17/062,183 · Granted Jun 17, 2025

Open channel implant tools and implant techniques utilizing such tools

Inventors: Kevin R. Seifert (Forest Lake, MN); Nathan L. Olson (Shoreview, MN); Rebecca L. Poindexter (Minneapolis, MN)
Assignee: Medtronic, Inc.
A61N1/0504A61B17/3415A61B17/3468A61N1/0563
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Quick Facts
Patent No.
US 12,329,962
App. No.
17/062,183
Granted
Jun 17, 2025
Kind
B2
Abstract

Implant tools and techniques for implantation of a medical lead, catheter or other component are provided. The implant tools and techniques are particularly useful in implanting medical electrical leads in extravascular locations, including subcutaneous locations. An implant tool for implanting a medical lead may include a handle and a shaft adjacent the handle. The shaft has a proximal end, a distal end, and an open channel that extends from near the proximal end to the distal end, the open channel having a width that is greater than or equal to an outer diameter of the implantable medical lead.

Claims (35)

1. An implant tool for implanting an implantable medical lead within a patient, the implant tool comprising:

a shaft including a proximal end, and a distal end, wherein a portion of the shaft is configured to be removably coupled to the implantable medical lead; and

a handle including a proximal end, a distal end, and a handle body extending between the proximal end and the distal end of the handle, wherein the handle includes a lumen at the distal end of the handle body extending proximally into the handle body, the lumen configured to receive the proximal end of the shaft to removably couple the shaft to the handle by moving the proximal end of the shaft proximally relative to the handle into the lumen at the distal end of the handle, wherein the implant tool is configured such that the portion of the shaft configured to be removably coupled to the implantable medical lead is positioned within the lumen of the handle when the handle receives the proximal end of the shaft, wherein an exterior surface of the shaft defines an open channel that extends on an exterior of the shaft, the open channel defining the portion of the shaft that is configured to be removably coupled to the implantable medical lead, and wherein, when the proximal end of the shaft is received within the lumen of the handle, the distal end of the shaft extends beyond the distal end of the handle,

wherein the distal end of the shaft defines a rounded distal end such that the shaft is configured to form a tunnel through a tissue of the patient with the rounded distal end of the shaft leading, wherein the shaft defines a thickness in a direction orthogonal to a longitudinal axis of the shaft, wherein the thickness of the shaft proximal from the rounded distal end to the proximal end is relatively uniform such that the entire shaft can be pulled through the tunnel when uncoupled from the handle.

2. The implant tool of claim 1 , wherein the open channel extends from the proximal end towards the distal end of the shaft.

3. The implant tool of claim 1 , wherein the open channel extends from the distal end toward the proximal end of the shaft.

4. The implant tool of claim 1 , wherein the open channel includes at least one guide along an inner surface of the shaft forming the open channel, the guide being recessed into the inner surface of the shaft and configured to receive a protrusion portion of the implantable medical lead within the recess of the guide to guide the lead within the open channel.

5. The implant tool of claim 1 , wherein the open channel is sized to provide an interference fit with a connector of the implanted medical lead.

6. The implant tool of claim 1 , wherein the lumen and the shaft are configured such than an interference fit is created to couple the shaft to the handle when the proximal end of the shaft is received in the lumen of the handle, and wherein, when the shaft and the handle are coupled via the interference fit, a portion of the exterior surface of the shaft is in direct contact with a surface of the lumen.

7. The implant tool of claim 1 , wherein the portion of the shaft that is configured to be removably coupled to the implantable medical lead comprises a hook feature configured to couple to a feature of the implantable medical lead, wherein the shaft has the thickness and the hook feature extends through the thickness of the shaft such that there is an opening through the surface of the shaft between the distal end and the proximal end of the shaft.

8. The implant tool of claim 1 , wherein the portion of the shaft that is configured to be removably coupled to the implantable medical lead comprises a hook feature configured to couple to a feature of the implantable medical lead, wherein the shaft has the thickness and the hook feature does not extend through the thickness of the shaft.

9. The implant tool of claim 1 , wherein the portion of the shaft that is configured to be removably coupled to the implantable medical lead is configured to receive and couple to a connector of the implantable medical lead.

10. The implant tool of claim 1 , wherein the portion of the shaft that is configured to be removably coupled to the implantable medical lead comprises a round recess that extends into the proximal end of the shaft, wherein the recess is sized to receive and couple to a portion of the implantable medical lead.

11. The implant tool of claim 10 , wherein the portion of the shaft that is configured to be removably coupled to the implantable medical lead comprises a slit that extends across the diameter of the proximal end of the shaft and into the proximal end of the shaft.

12. The implant tool of claim 10 , wherein the recess of the proximal end of the shaft is configured to be coupled to the portion of the medical lead via an interference fit.

13. The implant tool system of claim 1 , wherein the handle body includes a grip portion that is longitudinally offset from a portion of the handle adjacent the shaft.

14. The implant tool of claim 1 , wherein the rounded distal end of the shaft includes an edge that is rounded in a distal direction.

15. The implant tool of claim 1 , wherein the shaft is configured to be withdrawn from the lumen by moving the proximal end of the shaft distally relative to the handle.

16. The implant tool of claim 1 , wherein the open channel of the shaft defines a concave cross-section perpendicular to a longitudinal axis of the shaft extending between the distal end and the proximal end of the shaft.

17. The implant tool of claim 1 , wherein the open channel is configured to be received within the lumen of the handle when the shaft is removably coupled to the shaft handle.

18. The implant tool of claim 1 , wherein the shaft is formed of a single, unitary piece of material.

19. An implant tool system for implanting an implantable medical lead within a patient, the implant tool system comprising:

the implantable medical lead; and

an implant tool comprising:

a shaft including a proximal end, and a distal end, wherein a portion of the shaft is configured to be removably coupled to the implantable medical lead, and

a handle including a proximal end, a distal end, and a handle body extending between the proximal end and the distal end of the handle, wherein the handle includes a lumen at the distal end of the handle body extending proximally into the handle body, the lumen configured to receive the proximal end of the shaft to removably couple the shaft to the handle by moving the proximal end of the shaft proximally relative to the handle into the lumen at the distal end of the handle, wherein the implant tool is configured such that the portion of the shaft configured to be removably coupled to the implantable medical lead is positioned within the lumen of the handle when the handle receives the proximal end of the shaft, and wherein the tool is configured such that the portion of the shaft is configured to couple to the implantable medical lead when the shaft is not coupled to the handle, wherein an exterior surface of the shaft defines an open channel that extends on an exterior of the shaft, the open channel defining the portion of the shaft that is configured to be removably coupled to the implantable medical lead, and wherein, when the proximal end of the shaft is received within the lumen of the handle, the distal end of the shaft extends beyond the distal end of the handle.

20. The implant tool of claim 19 , wherein the open channel is configured to receive at least a portion of the implantable medical lead to couple the implantable medical lead to the shaft, the open channel having a width that is approximately equal to an outer diameter of the implantable medical lead at a location along a length of the implantable medical lead such that when the implantable medical lead is placed within the open channel there is an interference fit between the shaft and the implantable medical lead at the location.

21. A method for implanting an implantable medical lead within a patient, the method comprising:

introducing an implant tool into a first incision in a tissue of a patient, the implant tool comprising:

a shaft including a proximal end, and a distal end, wherein a portion of the shaft is configured to be removably coupled to the implantable medical lead, and

a handle including a proximal end, a distal end, and a handle body extending between the proximal end and the distal end of the handle, wherein the handle includes a lumen at the distal end of the handle body extending proximally into the handle body, the lumen configured to receive the proximal end of the shaft to removably couple the shaft to the handle by moving the proximal end of the shaft proximally relative to the handle into the lumen, and wherein the implant tool is configured such that the portion of the shaft configured to be removably coupled to the implantable medical lead is positioned within the lumen of the handle when the handle receives the proximal end of the shaft, and wherein an exterior surface of the shaft defines an open channel that extends on an exterior of the shaft, the open channel defining the portion of the shaft that is configured to be removably coupled to the implantable medical lead, and wherein, when the proximal end of the shaft is received within the lumen of the handle, the distal end of the shaft extends beyond the distal end of the handle;

advancing, when the proximal end of the shaft is received by the lumen of the handle and the distal end of the shaft extends beyond the distal end of the handle, the shaft of the implant tool through the tissue such that that the distal end of the shaft exits the tissue through a second incision;

removing the proximal end of the shaft from the lumen to detach the shaft from the handle by moving the proximal end of the shaft distally relative to the handle;

attaching the implantable medical lead to the open channel of the shaft; and

pulling the implantable lead through the first incision into the tissue of the patient via the shaft while the implantable medical lead is attached to the open channel of the shaft.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 2, 2020
From: SEIFERT, KEVIN R.; OLSON, NATHAN L.; POINDEXTER, REBECCA L.
To: MEDTRONIC, INC.
Reel/Frame 053975/0608 →
Continuity (3)
Continuation 14193634 · Feb 28, 2014
Provisional Application 61902847 · Nov 12, 2013
Related Publication 20210085960A1 · Mar 25, 2021
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