US 10,238,505 B2Granted

Bi-directional fixating/locking transvertebral body screw/intervertebral cage stand-alone constructs

AssigneeMoskowitz Family LLC

InventorsNathan C. Moskowitz, Mosheh Moskowitz, Ahmnon D. Moskowitz, Pablo A. Valdivia Y. Alvarado

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Abstract

A bi-directional fixating transvertebral (BDFT) screw/cage apparatus is provided. The BDFT apparatus includes an intervertebral cage including a plurality of internal angled screw guides, a plurality of screw members, and a cage indentation adjacent to the screw guides that independently or supplemented by other screw locking mechanisms prevents the screw members from pulling out of the internal angled screw guides. The internal angled screw guides orient a first screw member superiorly and a second screw member inferiorly. The intervertebral cage is adapted for posterior lumbar intervertebral placement, anterior lumbar intervertebral placement, anterio-lateral thoracic intervertebral placement, or anterior cervical intervertebral placement.

Claims20

Dependent claims

An intervertebral combination internal screw guide and fixation apparatus configured to be inserted into a disc space between a first vertebral body and a second vertebral body and to provide fusion of the first vertebral body to the second vertebral body via biological bone fusion and screw fusion, the apparatus comprising:

an intervertebral spacer including a top wall, a bottom wall, and first and second sidewalls, wherein the intervertebral spacer defines:
an open space between the top, bottom, first, and second sidewalls capable of receiving bone filling for biological bone fusion,
a first slot on a first outer side of the first sidewall,
a second slot on a second outer side of the second sidewall of the two sidewalls, wherein the second slot is positioned opposite of the first slot, wherein the first slot is positioned along a first centerline axis that bisects the first side wall and wherein the second slot is positioned along a second centerline axis that bisects the second side wall,
a first internal screw guide having a first entry opening and a first exit opening, the first entry opening of the first internal screw guide formed at least partially in a top surface of the top wall and the first exit opening formed at least partially in a bottom surface of the top wall and at least partially in a first side surface of the top wall,
a second internal screw guide having a second entry opening and a second exit opening, the second entry opening of the second internal screw guide formed at least partially in the top surface of the top wall and the second exit opening formed at least partially in the bottom surface of the top wall and at least partially in a second side surface of the top wall so as to extend in a direction different than that of the first internal screw guide,
an indentation in the top surface of the top wall extending between at least a portion of the first internal screw guide and the second internal screw guide, and
a hole extending into the top wall at an angle that is perpendicular to the top surface of the top wall and at a position that is located in the indentation between the first internal screw guide and the second internal screw guide,
a first screw having a first screw head and a first threaded body that is sized and configured to be inserted through the first internal screw guide;
a second screw having a second screw head and a second threaded body that is sized and configured to be inserted through the second internal screw guide;
and
a screw locking mechanism positioned in the indentation of the intervertebral spacer and extending at least partially into the hole.

9 more elements

an intervertebral spacer including a top wall, a bottom wall, and first and second sidewalls, wherein the intervertebral spacer defines:
an open space between the top, bottom, first, and second sidewalls capable of receiving bone filling for biological bone fusion,
a first slot on a first outer side of the first sidewall,
a second slot on a second outer side of the second sidewall of the two sidewalls, wherein the second slot is positioned opposite of the first slot, wherein the first slot is positioned along a first centerline axis that bisects the first side wall and wherein the second slot is positioned along a second centerline axis that bisects the second side wall,
a first internal screw guide having a first entry opening and a first exit opening, the first entry opening of the first internal screw guide formed at least partially in a top surface of the top wall and the first exit opening formed at least partially in a bottom surface of the top wall and at least partially in a first side surface of the top wall,
a second internal screw guide having a second entry opening and a second exit opening, the second entry opening of the second internal screw guide formed at least partially in the top surface of the top wall and the second exit opening formed at least partially in the bottom surface of the top wall and at least partially in a second side surface of the top wall so as to extend in a direction different than that of the first internal screw guide,
an indentation in the top surface of the top wall extending between at least a portion of the first internal screw guide and the second internal screw guide, and
a hole extending into the top wall at an angle that is perpendicular to the top surface of the top wall and at a position that is located in the indentation between the first internal screw guide and the second internal screw guide,
a first screw having a first screw head and a first threaded body that is sized and configured to be inserted through the first internal screw guide;
a second screw having a second screw head and a second threaded body that is sized and configured to be inserted through the second internal screw guide;
and
a screw locking mechanism positioned in the indentation of the intervertebral spacer and extending at least partially into the hole, wherein the screw locking mechanism has a central portion sized and configured to be inserted in the hole and has first and second side portions extending perpendicular to the hole so as to engage the first and second screws and secure the first and second screws in position when the first and second screws are inserted into the first and second internal screw guides.

9 more elements

an intervertebral spacer including a top wall, a bottom wall, and first and second sidewalls, wherein the intervertebral spacer defines:
an open space between the top, bottom, first, and second sidewalls capable of receiving bone filling for biological bone fusion,
a first slot on a first outer side of the first sidewall,
a second slot on a second outer side of the second sidewall of the two sidewalls, wherein the second slot is positioned opposite of the first slot, wherein the first slot is positioned along a first centerline axis that bisects the first side wall and wherein the second slot is positioned along a second centerline axis that bisects the second side wall,
a first internal screw guide having a first entry opening and a first exit opening, the first entry opening of the first internal screw guide formed at least partially in a top surface of the top wall and the first exit opening formed at least partially in a bottom surface of the top wall and at least partially in a first side surface of the top wall,
a second internal screw guide having a second entry opening and a second exit opening, the second entry opening of the second internal screw guide formed at least partially in the top surface of the top wall and the second exit opening formed at least partially in the bottom surface of the top wall and at least partially in a second side surface of the top wall so as to extend in a direction different than that of the first internal screw guide,
an indentation in the top surface of the top wall extending between at least a portion of the first internal screw guide and the second internal screw guide, and
a hole extending into the top wall at an angle that is perpendicular to the top surface of the top wall and at a position that is located in the indentation between the first internal screw guide and the second internal screw guide,
a first screw having a first screw head and a first threaded body that is sized and configured to be inserted through the first internal screw guide;
a second screw having a second screw head and a second threaded body that is sized and configured to be inserted through the second internal screw guide;
and
a screw locking mechanism positioned in the indentation of the intervertebral spacer and extending at least partially into the hole, wherein the screw locking mechanism comprises a first curved portion extending toward the first internal screw guide in engaging contact with the first screw when the first screw is inserted in the first internal screw guide and a second curved portion extending toward the second internal screw guide in engaging contact with the second screw when the second screw is inserted in the second internal screw guide.

9 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/678,401Filed 16 Aug 2017 · continuation
Priority: 12 Apr 2005
Published: US 2018/0014945 A118 Jan 2018
Granted: 26 Mar 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification16 codes

A61F 2/447
For the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages: substantially parallelepipedal, e.g.…
A61B 17/7064
Devices acting on, attached to, or simulating the effect of, vertebral processes, vertebral facets or ribs ; Tools for such devices: devices…
A61B 17/8047
Having indirect contact with screw heads, or having contact with screw heads maintained with the aid of additional components, e.g. nuts, wedges…:…
A61B 17/8605
Pins or screws or threaded wires; nuts therefor: heads, i.e. proximal ends projecting from bone

Family

Application60/670,231Us provisional application · filed 12 Apr 2005
Application11/208,644Parent of this continuation-in-part · filed 23 Aug 2005
Application11/536,815Parent of this continuation-in-part · filed 29 Sep 2006
Application11/842,855Parent of this continuation-in-part · filed 21 Aug 2007
Application11/842,855Parent of this division · filed 21 Aug 2007
Application12/054,335Parent of this division · filed 24 Mar 2008
Application61/445,034Us provisional application · filed 21 Feb 2011
Application61/451,582Us provisional application · filed 10 Mar 2011
Application61/451,579Us provisional application · filed 10 Mar 2011
Application13/084,543Parent of this continuation-in-part · filed 11 Apr 2011
Application13/103,994Parent of this continuation-in-part · filed 9 May 2011
Application13/401,829Parent of this continuation · filed 21 Feb 2012
US 2018/0014945 A1Pre-grant publication · published 18 Jan 2018
US 9,744,052 B2Parent of this continuation
US 9,603,713 B2Parent of this continuation-in-part
Application13/401,829Parent of this continuation-in-part
US 7,972,363 B2Parent of this division
Application13/103,994Parent of this division
US 7,942,903 B2Parent of this continuation-in-part
Application12/054,335Parent of this continuation-in-part
US 7,846,188 B2Parent of this continuation-in-part
US 7,704,279 B2Parent of this continuation-in-part
US 8,353,913 B2Parent of this continuation-in-part
US 7,942,903 B2Parent of this division
Application13/084,543Parent of this division
US 2006/0241621 A1Published application
US 2007/0049943 A1Published application
US 2008/0033440 A1Published application
US 2008/0177307 A1Published application
US 2011/0295327 A1Published application
US 2012/0010714 A1Published application
US 2012/0330419 A1Published application
US 10,238,505 B2This patent

From the US filing history. Foreign family members aren’t listed.