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US 2019/0336118 A1Published application
Instruments and surgical techniques for disc preparation
OwnerJavier GARCIA-BENGOCHEA, Marc VON AMSBERGinventors
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Abstract
A positive stop distractor, and arrays thereof, each instrument adapted with a generally flat/planar paddle and one or more mechanical stops on the planar paddle. And a modular distractor used to provide sustained distraction of a joint space, particularly a spinal disc space, including a distractor handle, a body, and a retrievable shim, and an optional cable for retention and retrieval of the shim.
Claims16
A modular surgical distractor, comprising:
- an elongate body having opposing generally planar faces along a length dimension between proximal and distal ends, a handle portion at the proximal end, and at the distal end a maximum width dimension, and a maximum depth dimension, and a center elongate axis, along the body, the distal end having a generally rectangular cross sectional shape
- a shim that is engageable with the elongate body by releasable engagement at the body's distal end, the shim having opposing generally planar faces along a length dimension, and having each of a width dimension and a depth dimension
- each of the elongate body and the shim comprising engagement features that form an engagement seat for releasable engagement between the body and the shim between locked and unlocked configurations, the locked configuration actuated by rotation of one of the body and shim from an antiparallel arrangement of the body and shim width dimensions to a parallel arrangement of the body and shim width dimensions.
A positive stop distractor comprising:
- an elongate body having a length dimension and a width dimension, and a center elongate axis, the elongate body comprising
- a proximal end having a handle, and
- a distal end having a generally flat and planar distal paddle that includes one or more mechanical stop features positioned along the paddle above the distal end
- wherein, in use in an intervertebral disc space, the instrument is insertable in a first orientation with its opposing planar faces facing adjacent end plates, and is rotatable around the central axis of the elongate body so that the planar faces are essentially perpendicular with the adjacent vertebral body endplates, and
- wherein the one or more mechanical stop features is adapted to extend away from one or the other of the planar faces of the paddle so as to interfere with the edge of one or the other of the adjacent vertebral bodies so as to prevent movement of the paddle into the disc space once the mechanical stop has contacted the edge of a vertebral body adjacent to the disc space.
2 more elements
Dependencies are inferred from the claim text.