Patent ID: 9597218
Date: 2017-03-21
CPC Classifications: A61F

Claim:
1. An orthotic device, comprising: a hard or hardenable cast suitable for application to a limb of a patient; a footbed comprising an internal footbed and an external sole, wherein the internal footbed is substantially rigid; a first strut coupled to the footbed; a second strut coupled to the footbed; a first paddle coupled to the first strut, the first paddle comprising a first inner surface configured to face the hard or hardenable cast as applied to the limb of the patient; a second paddle coupled to the second strut, the second paddle comprising a second inner surface configured to face the hard or hardenable cast as applied to the limb of the patient; and a circumferential attachment system configured to interface with the first paddle for tightening around the limb, wherein the first inner surface comprises a first mechanical interlock feature, and wherein the mechanical interlock feature is configured to minimize sliding of the first paddle with respect to the cast as applied to the limb and to increase an area over which forces from the first strut are transmitted to the cast as applied to the limb; wherein the second inner surface comprises a second mechanical interlock feature, and wherein the second mechanical interlock feature is configured to minimize sliding of the second paddle with respect to the cast as applied to the limb; wherein the first and second mechanical interlock features comprise a plurality of protrusions, and wherein the plurality of protrusions are configured to minimize sliding of the first and second paddles with respect to the cast as applied to the limb; and wherein the cast comprises a plurality of indentations, and wherein at least some protrusions of the plurality of protrusions are configured to protrude within at least some indentations of the plurality of indentations when the circumferential attachment system is applied to the orthotic device.