Spinal implant insertion instrument for spinal interbody prostheses
First Claim
1. A spinal implant insertion instrument comprising:
- a) a hollow body, wherein said hollow body comprises an outer surface, an inner surface, a proximal end, and a distal end;
b) a first guide, wherein said first guide extends from said distal end of said hollow body, c) at least one handle element, wherein said handle element comprises a handle proximal end and a handle distal end; and
d) at least one retractable guide, wherein said retractable guide extends from said handle distal end;
wherein said handle distal end is hingedly attached to said distal end of said hollow body, such that said retractable guide opposes said first guide, wherein said instrument further comprises a hollow guide element comprising a top end, a bottom end, an inner diameter and an outer diameter, such that said hollow guide element can be inserted through said proximal end of said hollow body when said retractable guide is in a retracted position and said bottom end is positioned between said retractable guide and said first guide and said top end is positioned at said proximal end of said hollow body.
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Accused Products
Abstract
A spinal implant insertion instrument for intervertebral implant surgery formed from a hollow first element of various external diameters, including a channel to accommodate and incorporate a vertebral pedicle, and a second element joined by a hinge to the first element, allowing reduction of the external diameter of the leading edge of the spinal implant insertion element sufficient to allow the passage of the spinal implant insertion instrument into the inteivertebral disc space in a safe fashion, as the first maneuver, to be followed by activation of the second element upon the first, restoring the internal diameter of the spinal implant insertion instrument to a sufficient radius to allow successive passage of cutting, reaming, tapping instruments, and subsequent implantation of a spinal interbody implant device. The design of this instrument reduces traction uponsensitive neural elements, allows controlled removal of the medial portion of the vertebral pedicle, distracts the intervertebral disc space, and allows safe passage of reaming, tapping, and spinal implant insertion devices through the expanded bore of the spinal implant insertion instrument.
419 Citations
10 Claims
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1. A spinal implant insertion instrument comprising:
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a) a hollow body, wherein said hollow body comprises an outer surface, an inner surface, a proximal end, and a distal end;
b) a first guide, wherein said first guide extends from said distal end of said hollow body, c) at least one handle element, wherein said handle element comprises a handle proximal end and a handle distal end; and
d) at least one retractable guide, wherein said retractable guide extends from said handle distal end;
wherein said handle distal end is hingedly attached to said distal end of said hollow body, such that said retractable guide opposes said first guide,wherein said instrument further comprises a hollow guide element comprising a top end, a bottom end, an inner diameter and an outer diameter, such that said hollow guide element can be inserted through said proximal end of said hollow body when said retractable guide is in a retracted position and said bottom end is positioned between said retractable guide and said first guide and said top end is positioned at said proximal end of said hollow body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification