Orthopaedic brace having a range of motion hinge with an adjustable-length strut
View Patent ↗An orthopaedic brace includes a strut length adjustment assembly to change the operable length of the strut for sizing the brace on a patient without the need for special tools or cutting of the strut. The adjustment assembly includes a biased adjustment mechanism that coacts with a plurality of notches in the strut to variably set/position the strut relative to the adjustment assembly to set the struts length. Each upper and lower strut preferably includes a strut length adjustment assembly to independently set the length of each strut. The strut length adjustment assembly retains a strut and includes a strap retention mechanism that is configured to releasably engage the strap.
1. An orthopedic brace comprising:
a first adjustable-length support;
a second adjustable-length support; and
a hinge pivotably connecting the first and second supports, wherein at least one of the first and second supports comprises:
a strut including a slot extending in a direction substantially parallel to a longitudinal axis of the strut;
a wing member slidable with respect to the strut; and
a stop; wherein
the slot has a first width in a direction perpendicular to the longitudinal axis of the strut, and a plurality of openings spaced along a center axis of the slot, the openings having a second width greater than the first width; and
the stop engages at least one opening to fix an amount of extension of the wing member with respect to the strut.
2. The orthopedic brace of claim 1 , wherein the stop comprises a shaft having a first segment with a first transverse thickness and a second segment with a second transverse thickness less than the first thickness.
3. The orthopedic brace of claim 2 , wherein the first transverse thickness is equal to or less than the second slot width and greater than the first slot width, and the second transverse thickness is equal to or less than the first slot width.
4. The orthopedic brace of claim 3 , wherein the stop is biased toward a first position in which the shaft first segment engages one of the openings, thereby fixing an amount of extension of the wing member with respect to the strut.
5. The orthopedic brace of claim 4 , wherein the stop is slidable to a second position in which the shaft first segment disengages the openings and the first slot widths are slidable past the shaft second segment such that the wing member us slidable with respect to the strut.
6. The orthopedic brace of claim 4 , wherein the stop is biased by a coil spring.
7. The orthopedic brace of claim 1 , wherein the strut is slidable within a longitudinal channel formed in the wing member.