Bone cutting device
First Claim
Patent Images
1. A bone-cutting device adapted for use in forming an implantation space in between and at least in part into two adjacent vertebral bodies where adjacent a disc space formed by the removal of disc material from a disc between the adjacent vertebral bodies of a human spine, said bone-cutting device comprising:
- a shaft having a distal end and a proximal end;
a forward projecting portion proximate said distal end of said shaft being configured to fit into the disc space, said forward projecting portion being adapted to contact each of the adjacent vertebral bodies from within the disc space; and
a cutting portion proximate said distal end of said shaft and proximate said forward projecting portion, said cutting portion having at least two opposed sharpened cutting surfaces adapted to cut bone from each of the adjacent vertebral bodies during advancement of said cutting portion into the spine behind said projecting portion, said forward projecting portion and said cutting portion being fixed relative to one another to permit simultaneous advancement of said forward projecting portion and said cutting portion into the spine.
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Abstract
Apparatus and a method of inserting spinal implants is disclosed in which an intervertebral space is first distracted, a hollow sleeve having teeth at one end is then driven into the vertebrae adjacent that disc space. A drill is then passed through the hollow sleeve removing disc and bone in preparation for receiving the spinal implant which is then inserted through the sleeve.
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Citations
29 Claims
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1. A bone-cutting device adapted for use in forming an implantation space in between and at least in part into two adjacent vertebral bodies where adjacent a disc space formed by the removal of disc material from a disc between the adjacent vertebral bodies of a human spine, said bone-cutting device comprising:
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a shaft having a distal end and a proximal end; a forward projecting portion proximate said distal end of said shaft being configured to fit into the disc space, said forward projecting portion being adapted to contact each of the adjacent vertebral bodies from within the disc space; and a cutting portion proximate said distal end of said shaft and proximate said forward projecting portion, said cutting portion having at least two opposed sharpened cutting surfaces adapted to cut bone from each of the adjacent vertebral bodies during advancement of said cutting portion into the spine behind said projecting portion, said forward projecting portion and said cutting portion being fixed relative to one another to permit simultaneous advancement of said forward projecting portion and said cutting portion into the spine. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A bone-cutting device adapted for use in forming an implantation space in between and at least in part into two adjacent vertebral bodies where adjacent a disc space formed by the removal of disc material from a disc between the adjacent vertebral bodies of a human spine, said bone-cutting device comprising:
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a shaft having a distal end and a proximal end; and a working end attached to said distal end of said shaft, said working end comprising a forward projecting portion being configured to fit into the disc space, said forward projecting portion being adapted to contact each of the adjacent vertebral bodies from within the disc space, said working end further comprising a cutting portion proximate said forward projecting portion, said cutting portion having at least two opposed sharpened cutting surfaces adapted to cut bone from each of the adjacent vertebral bodies during advancement of said cutting portion into the spine behind said forward projecting portion, said forward projecting portion and said cutting portion being fixed relative to one another to permit simultaneous advancement of said forward projecting portion and said cutting portion into the spine. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification