David J Leff

US Patent:

20190343645, Nov 14, 2019

Filed:

May 8, 2018

Appl. No.:

15/973609

Inventors:

- Audubon PA, US
Mark Weiman - Downingtown PA, US
David Leff - Philadelphia PA, US
Robert Ryan - Middletown PA, US
Christina M. Tiongson - Plymouth Meeting PA, US
Brian Flint - Eagleville PA, US
Alex Burkhardt - Akron PA, US
Colm McLaughlin - Glenside PA, US
Brittany Hansen - Philadelphia PA, US
Jody L. Seifert - Birdsboro PA, US
Todd Jasinski - West Chester PA, US
James Gault - Philadelphia PA, US
Samuel Petersheim - Elverson PA, US
Rena Mazur - Philadelphia PA, US

International Classification:

A61F 2/44
A61F 2/30

Abstract:

An intervertebral implant for implantation in an intervertebral space between vertebrae. The implant includes a body extending from an upper surface to a lower surface. The body has a front end, a rear end and a pair of spaced apart first and second side walls extending between the front and rear walls such that an interior chamber is defined within the front and rear ends and the first and second walls. The body defines an outer perimeter and an inner perimeter extending about the internal chamber. At least one of the side walls is defined by a solid support structure and an integral porous structure, the porous structure extending from the outer perimeter to the inner perimeter. The porous structure embeds or encapsulates at least a portion of the solid support structure.

US Patent:

20180325558, Nov 15, 2018

Filed:

May 9, 2018

Appl. No.:

15/975097

Inventors:

- Audubon PA, US
Jeff Nichols - Philadelphia PA, US
David Leff - Philadelphia PA, US

International Classification:

A61B 17/70
A61B 17/88
A61B 17/68

Abstract:

The present invention is generally directed to orthopedic fixation devices that comprise a pre-assembled double headed tulip assembly, having two tulip elements to receive rods, wherein the assembly may be configured to receive a bone fastener in at least one of the tulip elements. At least one of the tulip elements may comprise a saddle and a ring to attach the double headed tulip to a bone fastener.

US Patent:

20180185163, Jul 5, 2018

Filed:

Nov 7, 2017

Appl. No.:

15/805176

Inventors:

- Audubon PA, US
Hilliary Kopp - Berwyn PA, US
Joel Cryder - Warrington PA, US
James Himmelberger - Souderton PA, US
George Howard - Green Lane PA, US
David Leff - Philadelphia PA, US
Colm McLaughlin - Glenside PA, US
Mark Miccio - Lynbrook NY, US
Patrick Murray - Collegeville PA, US
Jeff Nichols - Philadelphia PA, US
Jason Zappacosta - Philadelphia PA, US

International Classification:

A61F 2/44
A61F 2/30
A61F 2/46

Abstract:

The present invention provides an expandable fusion device capable of being installed inside an intervertebral disc space to maintain normal disc spacing and restore spinal stability, thereby facilitating an intervertebral fusion. In one embodiment, the fusion device includes a central ramp, a first endplate, and a second endplate, the central ramp capable of being moved in a first direction to move the first and second endplates outwardly and into an expanded configuration. The fusion device is capable of being deployed down an endoscopic tube.

US Patent:

20180177603, Jun 28, 2018

Filed:

Nov 7, 2017

Appl. No.:

15/805215

Inventors:

- Audubon PA, US
Hilliary Kopp - Berwyn PA, US
Joel Cryder - Warrington PA, US
James Himmelberger - Souderton PA, US
George Howard - Green Lane PA, US
David Leff - Philadelphia PA, US
Colm McLaughlin - Glenside PA, US
Mark Miccio - Lynbrook NY, US
Patrick Murray - Collegeville PA, US
Jeff Nichols - Philadelphia PA, US

International Classification:

A61F 2/44
A61F 2/30
A61F 2/46

Abstract:

The present invention provides an expandable fusion device capable of being installed inside an intervertebral disc space to maintain normal disc spacing and restore spinal stability, thereby facilitating an intervertebral fusion. In one embodiment, the fusion device includes a central ramp, a first endplate, and a second endplate, the central ramp capable of being moved in a first direction to move the first and second endplates outwardly and into an expanded configuration. The fusion device is capable of being deployed down an endoscopic tube.

US Patent:

20180177604, Jun 28, 2018

Filed:

Nov 7, 2017

Appl. No.:

15/805257

Inventors:

- Audubon PA, US
Hilliary Kopp - Berwyn PA, US
Joel Cryder - Warrington PA, US
James Himmelberger - Souderton PA, US
George Howard - Green Lane PA, US
David Leff - Philadelphia PA, US
Colm Mclaughlin - Glenside PA, US
Mark Miccio - Lynbrook NY, US
Patrick Murray - Collegeville PA, US
Jeff Nichols - Philadelphia PA, US
Jason Zappacosta - Philadelphia PA, US

International Classification:

A61F 2/44
A61F 2/30
A61F 2/46

Abstract:

The present invention provides an expandable fusion device capable of being installed inside an intervertebral disc space to maintain normal disc spacing and restore spinal stability, thereby facilitating an intervertebral fusion. In one embodiment, the fusion device includes a central ramp, a first endplate, and a second endplate, the central ramp capable of being moved in a first direction to move the first and second endplates outwardly and into an expanded configuration. The fusion device is capable of being deployed down an endoscopic tube.

US Patent:

20170281245, Oct 5, 2017

Filed:

Mar 29, 2016

Appl. No.:

15/083467

Inventors:

- Audubon PA, US
John LaColla - West Chester PA, US
Aditya Muzumdar - King of Prussia PA, US
Aditya Ingalhalikar - King of Prussia PA, US
Andrew lott - Newtown Square PA, US
David Leff - Conshohocken PA, US
Brad Juchno - Yardley PA, US
Jeff Nichols - Philadelphia PA, US
Khiem Pham - Chalfont PA, US

International Classification:

A61B 17/70

Abstract:

Connector assemblies, systems, and methods thereof. An articulating connector has a first end that clamps to a first rod in an existing construct and a second end, rotatably connected to the first end, that clamps to a second rod in a new construct such that the clamping of the second end to the second rod prevents rotation of the second end with respect to the first end.

US Patent:

20170281246, Oct 5, 2017

Filed:

Mar 29, 2016

Appl. No.:

15/083625

Inventors:

- AUDUBON PA, US
John LaColla - West Chester PA, US
Aditya Muzumdar - King of Prussia PA, US
Andrew Iott - Newtown Square PA, US
David Leff - Conshohocken PA, US
Brad Juchno - Yardley PA, US
Jeff Nichols - Philadelphia PA, US
Khiem Pham - Chalfont PA, US

International Classification:

A61B 17/70

Abstract:

Connector assemblies, systems, and methods thereof. A connector having body having a first end and a second end; a first connecting member at the first end, the first connecting member having a rod supporting member extending away from the first connector and a passage extending between the first connecting member and the rod supporting member; and a rod extending from the second end. The body and the passage extend co-axially, and a space is provided between the first end and the second end, the space being sized such that a spinal implant screw head is insertable in the space.

US Patent:

20170252072, Sep 7, 2017

Filed:

May 18, 2017

Appl. No.:

15/598572

Inventors:

- AUDUBON PA, US
Khiem Pham - Chalfont PA, US
Doug Cahill - Lititz PA, US
Stephan Lawson - Upper Darby PA, US
Michael Zweizig - Fleetwood PA, US
David Leff - Conshohocken PA, US

International Classification:

A61B 17/70

Abstract:

Embodiments herein are generally directed to derotation systems, apparatuses, and components thereof that can be used in spinal derotation procedures, as well as methods of installation. The derotation systems may include a plurality of derotation towers and clamp members.