Insertion tool for paddle-style electrode
View Patent ↗The present disclosure describes various embodiments of an insertion tool that affords steerability of the paddle-style electrode during implantation without causing damage to the insulation and/or the contacts of the paddle-style electrode. One embodiment is described as having a “pin fork” configuration; another a “shovel” configuration; and yet another has tabs or a lumen on the paddle-style electrode for facilitating the insertion of a stylet. The various embodiments for the insertion tool allow for adjustments of the paddle-style electrode in both the medial/lateral and inferior/superior directions allowing the surgeon to steer the paddle-style electrode to the desired stimulation site within the epidural space of the spinal column.
1. A system for implanting a paddle-style electrode in a patient without an insertion needle, the system comprising:
a lead comprising
a paddle-style electrode platform including a distal end, a proximal end, a back surface, an active surface opposite the back surface, side edges between the back and active surfaces, a plurality holes in one or more of the back surface, active surface, or the side edges of the electrode platform, and a plurality of electrode contacts formed in two or more columns and disposed on the active surface, wherein the plurality of holes comprises a first hole and a second hole, and
a plurality of conductive wires coupled to the plurality of electrode contacts and extending away from the electrode contacts and out of the proximal end of the paddle-style electrode platform; and
an insertion tool to implant the paddle-style electrode platform in the patient without using an insertion needle, the insertion tool including a platform engager comprising a handle a plurality of pins configured to engage the plurality of holes of the electrode platform to guide the electrode platform during placement of the electrode platform in the patient, wherein the plurality of pins comprises a first pin and a second pin.
2. The system of claim 1 , wherein the first and second pins extend downward from the handle and are configured and arranged to engage two holes in the back surface of the electrode platform.
3. The system of claim 2 , wherein the first and second pins extend forwardly and inwardly from the handle and are configured and arranged to engage two holes in the side edges of the electrode platform.
4. The system of claim 1 , wherein the first and second pins and handle are configured such that the handle is oriented at the back surface of the electrode platform when the first and second pins are engaged in the first and second holes.
5. The system of claim 1 , wherein the first and second holes are in the back surface of the electrode platform and the first and second pins are configured to extend from a forward end of the handle into the first and second holes.
6. The system of claim 1 , wherein the first and second holes are in the side edges of the electrode platform and the first and second pins are configured to extend from the handle into the first and second holes.
7. The system of claim 1 , wherein the first and second pins and handle are configured such that the handle is oriented at the active surface of the electrode platform when the first and second pins are engaged in the first and second holes.
8. The system of claim 1 , wherein the first and second holes are both located on the back surface of the electrode platform.
9. The system of claim 1 , wherein the first and second holes are both located in the side edges of the electrode platform.
10. The system of claim 1 , wherein the first and second pins and the electrode platform are configured for engagement of the first and second pins with the first and second holes through the active surface of the electrode platform.
11. A method of using the system of claim 1 to implant the paddle-style electrode platform in a patient without using an insertion needle, the method comprising:
locating a stimulation site in a patient;
making an incision proximal the stimulation site;
engaging the electrode platform with the insertion tool;
inserting the insertion tool and electrode platform through the incision without using an insertion needle;
locating an electrode positioning space within the stimulation site;
with the insertion tool, positioning the electrode platform in the positioning space within the stimulation site;
releasing the insertion tool from the electrode platform; and
removing the insertion tool from the patient.
12. The method of claim 11 , wherein engaging the electrode platform with the insertion tool comprises inserting the first and second pins of the insertion tool into the first and second holes of the electrode platform.
13. The method of claim 12 , wherein the first and second holes are in the back surface of the electrode platform and the first and second pins are configured to extend from a forward end of the handle into the first and second holes.
14. The method of claim 13 , wherein engaging the electrode platform with the insertion tool further comprises engaging the first and second pins with the first and second holes from the back surface of the electrode platform.
15. The method of claim 12 , wherein the first and second holes are in the side edges of the electrode platform and the first and second pins are configured to extend from the handle into the first and second holes.
16. The method of claim 11 , wherein engaging the electrode platform with the insertion tool further comprises engaging the first and second pins with the first and second holes through the active surface of the electrode platform.
17. The method of claim 11 , wherein engaging the electrode platform with the insertion tool further comprises engaging the electrode platform with the insertion tool such that the handle is oriented at the active surface of the electrode platform when the first and second pins are engaged in the first and second holes.