Patent ID: 11937855
Assignee: APIFIX LTD
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 4:
5. A ratcheted spinal device, comprising:
a length member disposed in a housing, said length member having a length that protrudes out of said housing a variable amount, said length member and said housing together comprising a ratchet mechanism having an operative configuration allowing a change in said amount said length member protrudes out of said housing and having ratchet teeth formed along an axial portion of said length member and a pawl arranged to catch on one of said ratchet teeth, said pawl extending from a controller element mounted about a pivot and provided with an eccentric cam, each of said housing and said length member comprising a respective one of a plurality of polyaxial-joint attachment members for attachment to bone; and
a plurality of pedicle screws, each of said pedicle screws passing through and fixedly coupled to a respective one of said polyaxial-joint attachment members,
wherein each of said polyaxial-joint attachment members enables polyaxial rotation of a respective one of said pedicle screws and enables pivoting movement of said respective one of said pedicle screws about more than one pivoting axis,
wherein rotation of said eccentric cam moves said pawl to one of three positions: a) in ratchet engagement with said ratchet teeth so that said length member can incrementally move in one direction, b) in locked engagement with said ratchet teeth so that said length member cannot move at all, and c) moved out of engagement with said ratchet teeth so that said length member can move in both directions freely, and
wherein said controller element and said eccentric cam are mounted in said housing in all of said three positions.