Operative equipment for fixing spinal instrumentation
AssigneePaulette Fairant
InventorJean-Raymond Martin
Life of this patent
Estimating the term…
Abstract
An ancillary equipment for exerting and maintaining a force on a portion of the vertebral column for correcting and maintaining the shape and/or forces exerted on the vertebrae before and during a fixing operation of implanted rachidian instrumentation, comprising at least two active extremities (4, 5, 6) for cooperating respectively with two distinct vertebrae, comprising control rods for adjusting and maintaining the relative positions of the active extremities (4, 5, 6) in at least three orthogonal directions, by adjusting and maintaining the relative position of each active extremity (4, 5, 6) in at least one of said directions.
Claims11
Operative equipment for exerting and maintaining constraints on a portion of the vertebral column for correcting and maintaining the shape and forces exerted on the vertebrae before and during fixing of an implanted spinal instrumentation, comprising:
- an upper arm having a first operational end for cooperating with a first vertebra,
- a lower arm having a second operational end for cooperating with a second vertebra,
- a middle arm having a third operational end for cooperating with a third vertebra, said arms being articulated to each other or to a common support for enabling modification of the relative positions of said operational ends along a vertical direction, a frontal horizontal direction and a sagittal horizontal direction by modification of the relative position of each of said operational ends along at least one of said vertical, frontal horizontal and sagittal horizontal directions,
- a vertical control rod provided with a manipulating handle, said vertical control rod extending along said vertical direction and being connected to said arms so as to enable the adjustment and maintenance of the relative position of at least one of said operational ends in said vertical direction,
- a sagittal control rod having a manipulating handle, said sagittal control rod extending along said sagittal horizontal direction and being connected to said arms so as to allow the adjustment and maintenance of the relative position of at least one of said operational ends in said sagittal horizontal direction,
- a frontal control rod provided with a manipulating handle, said frontal control rod extending along said frontal horizontal direction and being connected to said arms so as to allow the adjustment and maintenance of the relative position of at least one of said operational ends in said frontal horizontal direction, each of said control rods comprising:
- an axial stop cooperating with one of said arms, and
- at least one threaded portion cooperating with a threaded connection secured to at least one other of said arms or control rods for cooperating with said axial stop for axially adjusting and maintaining the relative position of said arms.
Dependencies are inferred from the claim text.