US 10,441,430 B2 · Expandable spinal implants

Abstract

A spinal implant has proximal and distal regions, and includes upper and lower bodies. A proximal adjustment assembly is disposed between the upper and lower bodies in the proximal region of the spinal implant and is adjustably coupled to the upper and lower bodies, and a distal adjustment assembly is disposed between the upper and lower bodies in the distal region of the spinal implant and is adjustably coupled to the upper and lower bodies. The proximal and distal adjustment assemblies are independently movable with respect to each other, both concurrently and alternately, to change a vertical height of at least one of the proximal or distal regions of the spinal implant. A set screw is removably disposed within the proximal region of the spinal implant to lock the vertical height of the proximal and distal regions of the spinal implant.

Claims27

Dependent claims

A spinal implant having a proximal region and a distal region, the spinal implant comprising:

an upper body including an outer surface and an inner surface;
a lower body including an outer surface and an inner surface, the inner surfaces of the upper and lower bodies disposed in opposed relation relative to each other;
a proximal adjustment assembly disposed between the upper and lower bodies in the proximal region of the spinal implant and adjustably coupled to the upper and lower bodies;
a distal adjustment assembly disposed between the upper and lower bodies in the distal region of the spinal implant and adjustably coupled to the upper and lower bodies, wherein the proximal and distal adjustment assemblies are independently movable, both concurrently and alternately, to change a vertical height of at least one of the proximal region or the distal region of the spinal implant;
and
a set screw removably disposed within the proximal region of the spinal implant to lock the vertical height of the proximal and distal regions of the spinal implant.

3 more elements

A system comprising:

a spinal implant having a proximal region and a distal region, the spinal implant comprising:
an upper body including an outer surface and an inner surface;
a lower body including an outer surface and an inner surface, the inner surfaces of the upper and lower bodies disposed in opposed relation relative to each other;
a proximal adjustment assembly disposed between the upper and lower bodies in the proximal region of the spinal implant and adjustably coupled to the upper and lower bodies;
and
a distal adjustment assembly disposed between the upper and lower bodies in the distal region of the spinal implant and adjustably coupled to the upper and lower bodies, wherein the proximal and distal adjustment assemblies are independently movable, both concurrently and alternately, to change a vertical height of at least one of the proximal region or the distal region of the spinal implant;
and
an insertion instrument comprising:
a body portion including an elongated shaft extending along a longitudinal axis;
and
a connector assembly including connector arms pivotably secured to opposed sides of the elongated shaft, the connector arms configured to engage an outer surface of the spinal implant.

8 more elements

A system comprising:

a spinal implant having a proximal region and a distal region, the spinal implant comprising:
an upper body including an outer surface and an inner surface;
a lower body including an outer surface and an inner surface, the inner surfaces of the upper and lower bodies disposed in opposed relation relative to each other;
a proximal adjustment assembly disposed between the upper and lower bodies in the proximal region of the spinal implant and adjustably coupled to the upper and lower bodies;
and
a distal adjustment assembly disposed between the upper and lower bodies in the distal region of the spinal implant and adjustably coupled to the upper and lower bodies, wherein the proximal and distal adjustment assemblies are independently movable, both concurrently and alternately, to change a vertical height of at least one of the proximal region or the distal region of the spinal implant;
and
a driving instrument including:
an outer shaft including a distal end configured to actuate the proximal adjustment assembly;
a distal inner shaft disposed within the outer shaft and including a distal end configured to actuate the distal adjustment assembly;
and
a proximal shaft assembly including a proximal outer shaft, a proximal inner shaft disposed within the proximal outer shaft, and an adjustment knob for adjusting the position of the proximal inner shaft relative to the proximal outer shaft, a distal portion of the proximal outer shaft disposed within a proximal portion of the distal inner shaft, the adjustment knob movable between a height position configured to allow for simultaneous actuation of the proximal and distal adjustment assemblies, a proximal position configured to allow for actuation of only the proximal adjustment assembly, and a distal position configured to allow for actuation of only the distal adjustment assembly.

9 more elements

A method of implanting a spinal implant into a disc space between adjacent vertebral bodies, the method comprising:

inserting a spinal implant that is releasably attached to a distal end of an insertion instrument into a disc space, the spinal implant including:
an upper body including an outer surface and an inner surface;
a lower body including an outer surface and an inner surface, the inner surfaces of the upper and lower bodies disposed in opposed relation relative to each other;
a proximal adjustment assembly disposed between the upper and lower bodies in the proximal region of the spinal implant and adjustably coupled to the upper and lower bodies;
and
a distal adjustment assembly disposed between the upper and lower bodies in the distal region of the spinal implant and adjustably coupled to the upper and lower bodies, wherein the proximal and distal adjustment assemblies are independently movable, both concurrently and alternately, to change a vertical height of at least one of the proximal region or the distal region of the spinal implant;
inserting a driving instrument into a lumen defined through the insertion instrument and into engagement with the spinal implant, the driving instrument including:
an outer shaft including a distal end configured to actuate the proximal adjustment assembly;
a distal inner shaft disposed within the outer shaft and including a distal end configured to actuate the distal adjustment assembly;
and
a proximal shaft assembly including a proximal outer shaft, a proximal inner shaft disposed within the proximal outer shaft, and an adjustment knob for adjusting the position of the proximal inner shaft relative to the proximal outer shaft, a distal portion of the proximal outer shaft disposed within a proximal portion of the distal inner shaft, the adjustment knob movable between a height position configured to allow for simultaneous actuation of the proximal and distal adjustment assemblies, a proximal position configured to allow for actuation of only the proximal adjustment assembly, and a distal position configured to allow for actuation of only the distal adjustment assembly;
and
adjusting at least one of the proximal or distal adjustment assemblies of the spinal implant with the driving instrument.

10 more elements

Dependencies are inferred from the claim text.

Expandable spinal implants

Life of this patent

Expandable spinal implants

Life of this patent

Abstract

Claims27