US 12,268,624 B1
KAFO full leg brace for preventing knee buckling
Dennis James Richards, St. Charles, MO (US)
Filed by Dennis James Richards, St. Charles, MO (US)
Filed on May 1, 2022, as Appl. No. 17/734,110.
Application 17/734,110 is a continuation in part of application No. 16/161,616, filed on Oct. 16, 2018, abandoned.
Claims priority of provisional application 62/576,054, filed on Oct. 23, 2017.
Int. Cl. A61F 5/01 (2006.01)
CPC A61F 5/0125 (2013.01) [A61F 5/0111 (2013.01); A61F 2005/0181 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A knee ankle foot orthosis positioned on a leg of a person relative to a knee joint, comprising:
a thigh engaging section comprising a superior anterior segment, an inferior side segment, a medial superior side, and a lateral superior side, wherein the inferior side segment has a first longitudinal axis, wherein the inferior side segment has a first distal end comprising a first aperture with a first diameter and a first center, wherein the first center of the first aperture is posteriorly offset from the first longitudinal axis by a first distance greater than the first diameter, and wherein the first distal end of the inferior side segment surrounding the first aperture is further comprised of a first curved segment with a first convex outer surface and a first concave inner surface;
a calf engaging section comprising an inferior anterior segment, a superior side segment, a medial inferior side, and a lateral inferior side, wherein the superior side segment has a second longitudinal axis, wherein the superior side segment has a second distal end comprising a second aperture with a second diameter and a second center, wherein the second center is aligned with the first center, wherein the second center of the second aperture is posteriorly offset from the second longitudinal axis by a second distance greater than the second diameter, wherein the second distal end of the superior side segment surrounding the second aperture is further comprised of a second curved segment with a second convex outer surface and a second concave inner surface, and wherein the second curved segment is conformal with the first curved segment;
a fastener extending through the first aperture and the second aperture along a third longitudinal axis, wherein the fastener connects the first distal end of the thigh engaging section and the second distal send of the calf engaging section as a hinge joint around which the thigh engaging section and the calf engaging section rotate around the third longitudinal axis posteriorly from the first longitudinal axis and the second longitudinal axis by the first distance and the second distance, respectively;
a first adjustment strap connecting the medial superior side to the lateral superior side in the thigh engaging section;
a second adjustment strap connecting the medial inferior side to the lateral inferior side in the calf engaging section;
a stirrup extending between a proximal section and a distal section, wherein the proximal section is fixedly connected to the inferior anterior segment of the calf engaging section, wherein the proximal section longitudinally extends past the inferior anterior segment of the calf engaging section in a coronal plane with the inferior anterior segment of the calf engaging section, wherein the proximal section does not laterally extend to the medial inferior side or the lateral inferior side of the calf engaging section, and wherein the proximal section of the stirrup does not rotate relative to the calf engaging section at the inferior anterior segment while the distal end of the stirrup bends relative to the proximal end of the stirrup; and
a footplate connected to the distal section of the stirrup.