Patent ID: 9549836
Date: 2017-01-24
CPC Classifications: A61F

Claim:
1. An orthosis intended to be placed on a hand of a user, in particular to treat rhizarthrosis, comprising: a supporting member having a general shape of a horse saddle, having an inner flange and an outer flange connected by a curved U-shaped junction band, the inner and outer flanges arranged opposite one another and spaced apart by the junction band, the supporting member being arranged to be able to be placed at a thumb-index commissure with the inner flange configured for placement against a palm and the outer flange configured for placement against a back surface of the hand, the junction band configured for curving around a medial portion of a proximal phalange of a thumb and a lateral portion of a proximal phalange of an index finger in order to immobilize a metacarpal bone and enable a spacing to be maintained between the thumb and the index finger; a strap to be placed around the hand and the supporting member, so as to retain said supporting member, the orthosis being arranged such that a metacarpal bone of the thumb is trapped inside the orthosis between the strap and the supporting member; a rigid dorsal rod connected to the supporting member and/or the strap; a rigid palmar strip associated with the strap; wherein the orthosis is arranged such that a column of the thumb is trapped between the dorsal rod and the palmar strip.