US 10,500,061 B2Granted

Adjustable spinal implant

AssigneeK2M, Inc.

InventorsJennifer Moore, Stephen Truesdell

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Abstract

An adjustable spinal implant includes a fixed segment that slidably supports a locking segment and pivotally supports an upper segment and a lower segment relative to one another. The locking segment translates within a channel defined by the fixed segment between locked and unlocked positions. In the locked position, the upper and lower segments are fixed relative to one another and to the fixed segment. In the unlocked position, the upper and lower segments are pivotal relative to one another and to the fixed segment. The adjustable spinal implant includes a locking mechanism including a locking screw to translate the locking segment between locked and unlocked positions.

Claims20

Dependent claims

An adjustable spinal implant comprising:

a fixed segment defining a channel disposed about a longitudinal axis of the spinal implant;
a locking segment translatable within the channel of the fixed segment along the longitudinal axis between a locked position and an unlocked position, the locking segment defining a proximal opening passing vertically therethrough, the locking segment having a distal end portion including locking teeth;
a lower segment pivotally coupled to the fixed segment about a pivot axis that is transverse to the longitudinal axis, the lower segment having a distal end portion including teeth that oppose the locking teeth;
an upper segment pivotally coupled to the fixed segment about the pivot axis, the upper segment having a distal end portion including teeth that oppose the locking teeth, the adjustable spinal implant having a collapsed configuration wherein the distal end portions of the lower and upper segments define a first height and an expanded configuration wherein the distal end portions of the lower and upper segments define a second height greater than the first height;
and
a locking mechanism engageable with the locking segment to translate the locking segment longitudinally between locked and unlocked positions to fix the lower and upper segments relative to the fixed segment;
and
wherein, in the unlocked position, the locking teeth are longitudinally spaced apart from the teeth of the lower and upper segments.

5 more elements

A method of inserting an adjustable spinal implant, the method comprising:

positioning an adjustable spinal implant into an intervertebral space in a collapsed configuration, a distal end portion of the adjustable spinal implant having a first height in the collapsed configuration;
unlocking the adjustable spinal implant when the adjustable spinal implant is positioned within the intervertebral space by disengaging locking teeth of a locking segment from teeth of a lower segment and teeth of an upper segment such that the locking teeth are longitudinally spaced apart from the teeth of the lower and upper segments;
transitioning the adjustable spinal implant to an expanded configuration by pivoting at least one of the lower segment or the upper segment of the adjustable spinal implant about a pivot axis defined by a fixed segment of the adjustable spinal implant such that a distal end portion of the adjustable spinal implant has a second height greater than the first height;
and
locking the adjustable spinal implant in the expanded configuration by engaging the locking teeth of the locking segment with the teeth of the lower segment and the teeth of the upper segment to fix the lower segment and the upper segment relative to the fixed segment.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/752,369Filed 15 Aug 2016 · us provisional application
Priority: 13 Aug 2015
Published: US 2019/0000644 A13 Jan 2019
Granted: 10 Dec 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification14 codes

A61F 2/4465
For the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages: having a circular or kidney shaped…
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 2/4611
For insertion or extraction of endoprosthetic joints or of accessories thereof: of spinal prostheses
A61F 2002/30405
Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements: made by screwing complementary threads…

Family

Application62/204,542Us provisional application · filed 13 Aug 2015
US 2019/0000644 A1Pre-grant publication · published 3 Jan 2019
US 10,500,061 B2This patent

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

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