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US 11,076,967 B2Granted
Interbody fusion devices with self-affixing mechanisms
OwnerDon Reed, Aditya Ingalhalikar +6inventors
InventorsDon Reed, Aditya Ingalhalikar, Jeff Nichols, Brandon Preske, Mark Fromhold, Colm McLaughlin, Mark Adams, Brian Garvey
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Abstract
Interbody fusion devices including deployable fixation members. The implant may include a spacer, optionally, an end member coupled to the spacer, and one or more fixation members configured to extend into adjacent vertebrae. The fixation members may include screws, nails, shims, tangs, spikes, staples, pins, blades, fins, or the like, and combinations thereof.
Claims20
A spinal implant comprising:
- a spacer comprising an upper surface and a lower surface, wherein the upper surface comprises one or more protrusions and the lower surface comprises one or more protrusions;
- an end member attached to the spacer, wherein the end member comprises first, second and third openings, the first opening disposed between the second and third openings;
- a first fixation member extendable through the first opening, the first fixation member having a head portion and a distal end;
- and
- a second fixation member extendable through the second opening, the second fixation member having a head portion that is at least in part spherical allowing the second fixation member to freely rotate within the second opening;
- a third fixation member extendable through the third opening, the third fixation member having a head portion that is at least in part spherical allowing the third fixation member to freely rotate within the third opening;
- a first blocker for simultaneously blocking the first and second fixation members from back out,
- a second blocker for simultaneously blocking the first and third fixation members from back out,
- wherein the first fixation member is non-threaded and the second fixation member is threaded,
- wherein the first fixation member includes a spline,
- wherein the first blocker includes a rotatable blocking screw having a head adapted to block the spherical head portion of the second fixation member from backing out when the blocking screw is rotated, and
- wherein the first opening is circular with at least one lateral extension configured to receive a substantially flat portion of the first fixation member that extends laterally across a proximal end of the first fixation member.
9 more elements
A spinal implant comprising:
- a spacer comprising an upper surface and a lower surface, wherein the upper surface comprises one or more protrusions and the lower surface comprises one or more protrusions;
- an end member attached to the spacer, wherein the end member comprises a first opening, a second opening and a third opening, the first opening disposed between the second and third openings;
- a first fixation member extendable through the first opening, the first fixation member having a head portion and a distal end;
- a second fixation member extendable through the second opening, the second fixation member having a head portion that is at least in part spherical allowing the second fixation member to freely rotate within the second opening;
- a third fixation member extendable through the third opening, the third fixation member having a head portion that is at least in part spherical allowing the third fixation member to freely rotate within the third opening,
- a first blocker positioned to simultaneously block the first and second fixation members from back out,
- a second blocker positioned to simultaneously block the first and third fixation members from back out, the second blocker adapted to block the spherical head portion of the third fixation member from backing out,
- wherein the first fixation member is non-threaded,
- wherein the second fixation member and third fixation member are each threaded,
- wherein the first fixation member includes a spline,
- wherein the first blocker includes a rotatable blocking screw having a head adapted to block the spherical head portion of the second fixation member from backing out when the blocking screw is rotated, and
- wherein the first opening is circular with at least one lateral extension configured to receive a substantially flat portion of the first fixation member that extends laterally across a proximal end of the first fixation member.
9 more elements
Dependencies are inferred from the claim text.