US 10,206,788 B2Granted

Expandable interbody devices and related instruments and methods for spinal fusion surgery

AssigneeSouthern Spine, LLC

InventorsDavid C. Field, Mitchell Blenden, Hugh F. Smisson, III

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Abstract

An interbody device may include a main body and an arm movably connected thereto. The device may have a first end, a second end opposite the first end in a direction of a longitudinal axis of the device, a first side, a second side opposite the first side in a direction of a first transverse axis of the device, a third side, and a fourth side opposite the third side in a direction of a second transverse axis of the device. An overall distance between the first side and the second side may increase along at least a majority of a length of the device in a direction from the first end toward the second end, and an overall distance between the third side and the fourth side may increase along at least a majority of the length in a direction from the second end toward the first end.

Claims20

Dependent claims

An interbody device for implantation within an intervertebral space between a first vertebra and a second vertebra, the interbody device comprising:

a main body having an elongated shape;
and
an arm movably connected to the main body and having an elongated shape;
wherein the interbody device has a first end, a second end disposed opposite the first end of the interbody device in a direction of a longitudinal axis of the interbody device, a first side, a second side disposed opposite the first side of the interbody device in a direction of a first transverse axis of the interbody device, a third side, and a fourth side disposed opposite the third side of the interbody device in a direction of a second transverse axis of the interbody device;
wherein the first transverse axis of the interbody device is perpendicular to the longitudinal axis of the interbody device;
wherein the second transverse axis of the interbody device is perpendicular to each of the longitudinal axis and the first transverse axis of the interbody device;
wherein a first overall distance between the first side and the second side of the interbody device increases along at least a majority of a length of the interbody device in a direction from the first end toward the second end of the interbody device;
wherein the main body has a first side, a second side disposed opposite the first side of the main body in the direction of the first transverse axis of the interbody device, a third side, and a fourth side disposed opposite the third side of the main body in the direction of the second transverse axis of the interbody device;
wherein the arm has a first side, a second side disposed opposite the first side of the arm in the direction of the first transverse axis of the interbody device, a third side, and a fourth side disposed opposite the third side of the arm in the direction of the second transverse axis of the interbody device;
and
wherein a second overall distance between the third side and the fourth side of the main body is greater than a third overall distance between the third side and the fourth side of the arm.

8 more elements

An interbody device for implantation within an intervertebral space between a first vertebra and a second vertebra, the interbody device comprising:

a main body having an elongated shape;
and
an arm pivotally connected to the main body via a hinge connection defining a pivot axis and having an elongated shape;
wherein the arm is pivotable about the pivot axis with respect to the main body from a compact position to an expanded position;
wherein the interbody device has a first end, a second end disposed opposite the first end of the interbody device in a direction of a longitudinal axis of the interbody device, a first side, a second side disposed opposite the first side of the interbody device in a direction of a first transverse axis of the interbody device, a third side, and a fourth side disposed opposite the third side of the interbody device in a direction of a second transverse axis of the interbody device;
wherein the first transverse axis of the interbody device is perpendicular to the longitudinal axis of the interbody device;
wherein the second transverse axis of the interbody device is perpendicular to each of the longitudinal axis and the first transverse axis of the interbody device;
wherein the pivot axis is parallel to the second transverse axis of the interbody device;
wherein a first overall distance between the first side and the second side of the interbody device increases along at least a majority of a length of the interbody device in a direction from the first end toward the second end of the interbody device;
wherein the main body has a first side, a second side disposed opposite the first side of the main body in the direction of the first transverse axis of the interbody device, a third side, and a fourth side disposed opposite the third side of the main body in the direction of the second transverse axis of the interbody device;
and
wherein the main body comprises a first plurality of teeth positioned on the third side of the main body and a second plurality of teeth positioned on the fourth side of the main body.

9 more elements

An interbody device for implantation within an intervertebral space between a first vertebra and a second vertebra, the interbody device comprising:

a main body having an elongated shape;
and
an arm pivotally connected to the main body via a hinge connection defining a pivot axis and having an elongated shape;
wherein the arm is pivotable about the pivot axis with respect to the main body from a compact position to an expanded position;
wherein the interbody device has a first end, a second end disposed opposite the first end of the interbody device in a direction of a longitudinal axis of the interbody device, a first side, a second side disposed opposite the first side of the interbody device in a direction of a first transverse axis of the interbody device, a third side, and a fourth side disposed opposite the third side of the interbody device in a direction of a second transverse axis of the interbody device;
wherein the first transverse axis of the interbody device is perpendicular to the longitudinal axis of the interbody device;
wherein the second transverse axis of the interbody device is perpendicular to each of the longitudinal axis and the first transverse axis of the interbody device;
wherein the pivot axis is parallel to the second transverse axis of the interbody device;
wherein the interbody device has a first overall distance between the first side and the second side of the interbody device at the first end of the interbody device;
wherein the interbody device has a second overall distance between the first side and the second side of the interbody device at the second end of the interbody device;
wherein the interbody device has a third overall distance between the third side and the fourth side of the interbody device at the second end of the interbody device;
wherein the first overall distance is than each of the second overall distance and the third overall distance;
and
wherein the second overall distance is greater than the third overall distance.

11 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/387,191Filed 21 Dec 2016 · us provisional application
Priority: 21 Dec 2015
Published: US 2017/0172758 A122 Jun 2017
Granted: 19 Feb 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification18 codes

A61F 2/4455
For the spine, e.g. vertebrae or spinal discs: for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion…
A61F 2/442
For the spine, e.g. vertebrae or spinal discs: intervertebral or spinal discs, e.g. resilient
A61F 2/4611
For insertion or extraction of endoprosthetic joints or of accessories thereof: of spinal prostheses
A61F 2/4603
Special tools for implanting artificial joints: for insertion or extraction of endoprosthetic joints or of accessories thereof