Implants for tissue fixation and fusion
AssigneeCutting Edge Spine LLC
InventorsKyle Kuntz, Shyam Patel
Life of this patent
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Abstract
A fixation implant includes a head, a shank and a distal tip, and one or more of the head, shank and distal tip may be cannulated. The shank includes a threaded ingrowth portion extending from the head to the tapered distal tip that includes external threads, and at least one open network body extending along the length of the ingrowth portion. The open network body selected from one or a combination of a helix, an arrangement of trusses, a scaffold of open and interconnected pores, a porous framework of random open and interconnected pores, and combinations of these.
Claims20
A fixation implant, comprising:
- a shank having a length from a proximal end to a distal end;
- a head that is integral with the shank at its proximal end and has a tool recess configured for engagement with a driving instrument;
- a tapered, self-tapping tip that is integral with the shank at its distal end;
- a cannula formed entirely through the fixation implant from and including the head through the shank and to and including the tip;
- a non-porous first threading formed from metal and extending along an external surface of the shank;
- and
- a non-porous second threading formed from metal and extending along an external surface of the head,
- wherein at least a portion of the shank, or at least a portion of the shank and one or more of the tip or the head, comprises an open network body comprising a scaffold of open and interconnected pores mimicking a trabecular bone structure,
- wherein the head, inclusive of the second threading, has a maximum outer diameter which is not larger than a maximum outer diameter of the shank, inclusive of the first threading,
- wherein the maximum outer diameter of the shank, inclusive of the first threading, is consistent along the length of the shank from the proximal end to the distal end, and
- wherein the first threading is integral with a surface of the open network body.
A fixation implant, comprising:
- a shank having a length from a proximal end to a distal end;
- a head that is integral with the shank at its proximal end and has a tool recess configured for engagement with a driving instrument;
- a tapered self-tapping tip that is integral with the shank at its distal end;
- a non-porous first threading formed from metal and extending along an external surface of the shank;
- a non-porous second threading formed from metal and extending along an external surface of the head,
- wherein at least a portion of the shank comprises an open network body comprising a scaffold of open and interconnected pores mimicking a trabecular bone structure,
- wherein the head, inclusive of the second threading, has a maximum outer diameter which is not larger than a maximum outer diameter of the shank, inclusive of the first threading,
- wherein the maximum outer diameter of the shank, inclusive of the first threading, is consistent along the length of the shank from the proximal end to the distal end,
- wherein the first threading is integral with a surface of the open network body, and
- wherein the tip and the head are non-porous and formed from a solid material.
Dependencies are inferred from the claim text.