Paddle leads and delivery tools, and associated systems and methods
Paddle leads and delivery tools, and associated systems and methods are disclosed. A representative system is for use with a signal delivery paddle that is elongated along a longitudinal axis, and has a paddle length and a first cross-sectional area distribution that includes a first maxima. The system comprises a delivery tool including a proximal handle and a distal connection portion positioned to removably couple to the signal delivery paddle. The paddle and the delivery tool together have a combined second cross-sectional area distribution along the length of the paddle, with a second maxima that is no greater than the first maxima.
1. A patient therapy system, comprising:
a signal delivery paddle including:
a paddle body having an upper surface and a lower surface facing away from the upper surface, the paddle body carrying a plurality of signal delivery electrodes and having two lead legs projecting in a proximal direction and separated by a gap; and
two lead tails, each extending from a corresponding one of the lead legs and each carrying at least one conductor electrically connected to a corresponding one of the signal delivery electrodes; and
a delivery tool removably coupleable to the signal delivery paddle, the delivery tool including:
a proximal handle;
a distal connection portion connected to the proximal handle and having:
a central projection sized to fit within the gap between the two legs of the signal delivery paddle;
two outward-opening C-shaped leg channels, each positioned along the central projection to receive a corresponding one of the lead legs;
two outward-opening C-shaped tail channels, each positioned along the distal connection portion to receive a corresponding one of the lead tails; and
an actuator positioned to move between a first position in which the distal connection portion is engaged with the signal delivery paddle, and a second position in which the signal delivery paddle is forced away from the distal connection portion.
2. The system of claim 1 wherein the paddle body includes a blind aperture, and wherein the distal connection portion of the delivery tool includes an extension positioned to be releasably received in the aperture.
3. The system of claim 2 wherein the extension is carried by the central projection.
4. The system of claim 2 wherein the extension is a portion of the actuator.
5. The system of claim 1 wherein the paddle body alone has a paddle body length, is elongated along a longitudinal axis, and has a first cross-sectional area distribution along the longitudinal axis, the first cross-sectional area distribution including a first maxima, and wherein the paddle body and the delivery tool together have a combined second cross-sectional area distribution along the longitudinal axis, the second cross-sectional area distribution including a second maxima over the length of the paddle body that is no greater than the first maxima.
6. The system of claim 1 wherein the delivery tool has no forward facing steps over the length of the paddle body.
7. The system of claim 1 wherein the delivery tool has at least one forward facing edge over the length of the paddle body.
8. The system of claim 1 wherein a diameter of at least one of the leg channels of the delivery tool is greater than a diameter of a corresponding at least one lead leg of the signal delivery paddle.
9. The system of claim 1 wherein a diameter of at least one of the leg channels of the delivery tool is less than a diameter of a corresponding at least one lead leg of the signal delivery paddle.
10. The system of claim 1 wherein the central portion has a leading edge that fits over the upper surface of the paddle body.
11. The system of claim 1 wherein the central portion has a leading edge that fits under the lower surface of the paddle body.
12. The system of claim 1 wherein the central portion has a first leading edge that fits over the upper surface of the paddle body and a second leading edge that fits under the lower surface of the paddle body.