Medos International Sarl

Didier Gonzalez

Sean Saidha

Roger Berger

Markus Hunziker

Thomas E Martin

Stephane Gully

Connor Engstrom

Jonathan Melchor

Phat Luu

Meredith Walsh

An expandable intervertebral cage includes vertically opposed superior and inferior plates and longitudinally opposed distal and proximal wedges disposed between the plates. The wedges define ramps that engage complimentary ramps of the superior and inferior plates to increase a vertical distance between the plates. An actuator is located between the plates, defines a central, longitudinal axis, and is coupled to the wedges such that, as the actuator rotates about the axis, at least one of the wedges moves longitudinally relative to the other, thereby increasing the vertical separation distance. At least one locking component is insertable within a receptacle at least partially defined by the proximal wedge and is configured to transition from an unlocked configuration, where the actuator is rotatable relative to the proximal wedge, to a locked configuration, where the actuator is rotationally affixed relative to the proximal wedge.

Stabilization members for expandable intervertebral implants, and related systems and methods

An expandable intervertebral implant includes a first endplate and a endplate, a first wedge member and a second wedge member spaced from the first wedge member that couple the first and second plates together. The first and second wedge members configured to move between a first collapsed position and a second expansion position. The implant includes an actuation member coupled to the first wedge member and the second wedge member. The first and second wedge members can be coupled to the upper and lower endplates at guide members that are asymmetric. An instrument can be coupled to the implant so as to provide a force to the actuation member that causes the wedge members to move between the collapsed position and the expansion position. The instrument can include a drive shaft and a toggle member that is configured to move the drive shaft between a first position whereby the drive shaft is configured to drive an attachment pin into the implant, and a second position whereby the drive shaft is aligned to drive the actuation member to rotate.

Expandable intervertebral implant, inserter instrument, and related methods

Growing community of inventors

Binningen, Switzerland

Didier Gonzalez