US 12,440,363 B2
Foot orthosis with swivel joint for correcting foot malpositions
Manfred Brass, Grünwald (DE); and Joerg Ostenrieder, Ebenhausen (DE)
Assigned to LUDWIG BERTRAM GMBH, Isernhagen (DE)
Appl. No. 18/551,757
Filed by LUDWIG BERTRAM GMBH, Isernhagen (DE)
PCT Filed Mar. 22, 2022, PCT No. PCT/EP2022/057525
§ 371(c)(1), (2) Date Sep. 21, 2023,
PCT Pub. No. WO2022/200369, PCT Pub. Date Sep. 29, 2022.
Claims priority of application No. 102021107084.8 (DE), filed on Mar. 22, 2021.
Prior Publication US 2024/0173160 A1, May 30, 2024
Int. Cl. A61F 5/01 (2006.01)
CPC A61F 5/019 (2013.01) 15 Claims
OG exemplary drawing
 
1. A foot orthosis for correcting foot malpositions comprising a toe splint configured to be fastened to a toe and a metatarsal splint configured to be fastened to a metatarsal region of the foot, each of which are pivotably connected relative to one another by means of a swivel joint, wherein
in a fastened state in which the foot orthosis is fastened to the foot, the foot orthosis is configured to exert a first corrective force on the toe via the toe splint and to exert a second corrective force on a metatarsophalangeal joint via the swivel joint in the opposite direction to the first corrective force; in the fastened state, the foot orthosis is configured to exert a holding force on the metatarsus via the metatarsal splint which is directed opposite to the second corrective force;
the swivel joint is provided with a recess in the form of a through hole which extends along a swivel axis of the swivel joint and which is designed such that, in the state fastened to the foot, a sideways protruding section of the metatarsophalangeal joint is received in the through hole, wherein the swivel joint comprises a first joint element in the form of a joint ring connected to the toe splint and a second joint element in the form of a joint pin connected to the metatarsal splint which are form-fittingly engaged along and transversely to the swivel axis of the swivel joint, wherein the joint pin is provided with a receiving groove in which a correspondingly designed connecting ring of the joint ring is guided, the joint pin comprises a circumferential radial shoulder which provides a form-fit connection between the joint ring and the joint pin in direction of the swivel axis and which is received in a correspondingly designed further recess of the joint ring; the swivel joint is configured to, in the fastened state, transmit bending forces between the metatarsal splint and the toe splint which are parallel to the first or second corrective force; and in the fastened state, the foot orthosis is configured such that the first corrective force, the second corrective force and the holding force are provided in the form of a bending force induced by an elastic deformation of the toe splint and the metatarsal splint.