Tibial alignment guide and cutting system
View Patent ↗The present invention relates to a patient specific instrumentation for a total ankle replacement. The system is comprised of a device primarily comprised of a device front face; a device rear face opposite the front face that may be configured to face a human tibia; a device thickness extending from the device front face to the device rear face; a device top; a device bottom that may configured to be positioned over a user's foot; a device height extending from the device top to the device bottom and perpendicular to device thickness; a device left side; a device right side; a device width extending from the device left side to the device right side and perpendicular to the device height and device thickness; and a lower portion that may include a device body.
1 . A tibial alignment guide and cutting system comprising:
a device body;
a star-shaped cutout;
a vertical rod comprised of a rod hole;
an angled fastener hole;
a perpendicular fastener hole;
a screw;
an upward-angled fastener hole;
a talar cutting piece comprised of a cutting window and a cutting slot;
a bar comprised of a prong and a wing tab;
a tibial cutting slot;
an angel wing comprised of an angel wing cutting slot; and
a fastener.
2 . The tibial alignment guide and cutting system of claim 1 , wherein the vertical rod is comprised of a radiopaque rod.
3 . The tibial alignment guide and cutting system of claim 1 , wherein the vertical rod is comprised of a bottom end that is connected to the device body.
4 . The tibial alignment guide and cutting system of claim 1 , wherein the fastener is comprised of a smooth fastener, a threaded fastener, a drill-tipped fastener or a cannulated fastener.
5 . A tibial alignment guide and cutting system comprising:
a device body;
a cutout comprised of an angled slot;
a blade slot comprised of a tooth;
an outrigger clip that attaches to the device body;
an oblong slot;
a vertical rod comprised of a first rod hole and a second rod hole;
a left-angled fastener hole and a right-angled fastener hole;
a first perpendicular fastener hole, a second perpendicular fastener hole, and a third perpendicular fastener hole;
a screw;
an upward-angled fastener hole;
a talar cutting piece comprised of a cutting window, a cutting slot, an arc-shaped recess comprised of a tooth, and a fastener hole;
a bar comprised of a prong and a wing tab;
a tibial cutting slot;
a moveable carriage that attaches to the device body;
a driver;
a pin; and
a k-wire.
6 . The tibial alignment guide and cutting system of claim 5 , wherein the driver is comprised of a cannulated driver, a screwdriver, a cannulated hex handle driver, or a hex handle driver.
7 . The tibial alignment guide and cutting system of claim 5 , wherein the first rod hole is positioned 90 degrees relative to the second rod hole.
8 . The tibial alignment guide and cutting system of claim 5 , wherein the first perpendicular fastener hole, the second perpendicular fastener hole, and the third perpendicular fastener hole are arranged in a triangular pattern.
9 . The tibial alignment guide and cutting system of claim 5 , wherein the left-angled fastener hole and the right-angled fastener hole converge.
10 . A tibial alignment guide and cutting system comprising:
a device body comprised of a perpendicular fastener hole and an angled fastener hole;
a star-shaped cutout;
a blade slot comprised of a tooth;
an outrigger clip that attaches to the device body;
a vertical rod comprised of a rod hole;
a screw;
an upward-angled fastener hole;
a talar cutting piece comprised of a talar cutting window, a talar cutting slot, an oblong slot, a blade slot, an arc-shaped recess comprised of a tooth, and a fastener hole;
a bar comprised of a prong and a wing tab;
a tibial cutting slot positioned above the talar cutting slot;
an angel wing comprised of an angel wing cutting slot; and
a moveable carriage that attaches to the device body.
11 . The tibial alignment guide and cutting system of claim 10 , wherein the device body is comprised of a transparent device body.
12 . The tibial alignment guide and cutting system of claim 10 , wherein the device body is comprised of a radiolucent device body.
13 . The tibial alignment guide and cutting system of claim 10 , wherein the perpendicular fastener hole extends from a front face of the device body to a rear face of the device body.
14 . The tibial alignment guide and cutting system of claim 13 , wherein the perpendicular fastener hole is perpendicular to a width of the device body.
15 . The tibial alignment guide and cutting system of claim 10 , wherein the angled fastener hole extends from a front face of the device body to a rear face of the device body.
16 . The tibial alignment guide and cutting system of claim 15 , wherein the angled fastener hole extends from a front face of the device body to a rear face of the device body at an angle between 10 and 80 degrees relative to a width of the device body and inwardly.
17 . The tibial alignment guide and cutting system of claim 10 , wherein the tibial cutting slot extends from a front face of the device body to a rear face of the device body.
18 . The tibial alignment guide and cutting system of claim 10 , wherein the talar cutting piece removably attaches to the device body.
19 . The tibial alignment guide and cutting system of claim 10 , wherein the movable carriage attaches to the device body via a vertical fastener.
20 . The tibial alignment guide and cutting system of claim 10 , wherein the angel wing is comprised of an L-shaped bar.