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FLO-2
As an expandable intervertebral implant expands the geometric shapes 602 deform and stretch. The size, shape, and distribution of the pores 606 may be predetermined such that the structure having the pattern will expand to a desired or target distance.
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FLO-2
In the pattern 600a of Figure 6A, the geometric shapes 602 are hexagons. In the pattern 600b of Figure 6B, the geometric shapes 602 are octagons. In the pattern 600c of Figure 6C, the geometric shapes 602 are diamonds. In the pattern 600d of Figure 6D, the geometric shapes 602 are ovals. In the pattern 600e of Figure 6E, the geometric shapes 602 are triangles. In the pattern 600f of Figure 6D, the geometric shapes 602 are quadrilaterals, such as for example trapezoids.
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FLO-2
Figures 7A-6F illustrates different patterns 700a-c that can be used in various embodiments of the present disclosure. In certain embodiments, the patterns 700a-c can include one geometric shape, two geometric shapes, or a combination three or more geometric shapes. The shapes and/or designs that make up the pattern are a set of geometric shapes. Each of the shapes of the pattern can include a pore or opening such that the pattern includes a distributed set of one or more geometric shapes comprising a set of pores.
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FLO-2
For example, pattern 700a illustrates a pattern for embodiments in which the pattern includes two geometric shapes. In the illustrated embodiment, the pattern 700a includes a repeated and evenly distributed set of circles 702 and hexagons 704.
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FLO-2
Pattern 700b illustrates a pattern for embodiments in which the pattern includes three geometric shapes. In the illustrated embodiment, the pattern 700a includes a repeated and evenly distributed set of pentagons 706, ovals 708, and hexagons 710.
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FLO-2
Pattern 700c illustrates a pattern for embodiments in which the pattern includes three geometric shapes. In the illustrated embodiment, the pattern 700a includes a repeated and evenly distributed set of octagons 712, diamonds 714, and triangles 716.
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FLO-2
Certain embodiments may include one or more of the following aspects. The opening may have internal threads about the longitudinal axis and the expansion mechanism may have a screw member that may include a shank that may have threads that engage the internal threads within the opening, the screw member having a diameter selected such that rotation of the screw member about the longitudinal axis by activation of the driver expands, the first mesh, the second mesh, the upper mesh, and the lower mesh.
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FLO-2
Figure 2B is a perspective top view of a distal end of the expandable intervertebral implant 200 of Figure 2A;
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FLO-2
Figure 2A is a perspective top view of a proximal end of an expandable intervertebral implant 200, according to one embodiment of the present disclosure;
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FLO-2
Figure 1B is a perspective top view of a distal end of the expandable intervertebral implant 100 of Figure 1A;
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FLO-2
Figure 1A is a perspective top view of a proximal end of an expandable intervertebral implant 100, according to one embodiment of the present disclosure;
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FLO-2
Certain embodiments, of the expandable intervertebral implant may further include a proximal end, a distal end, and an inserter attachment feature connected to the upper plate, the lower plate, the first lattice, and the second lattice at the proximal end. The upper lattice, the lower lattice, the first lattice, and the second lattice each extend to include the inserter attachment feature. In other words, a pattern for one or more of the upper lattice, the lower lattice, the first lattice, and the second lattice may also be formed within one or more walls of the inserter attachment feature.
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FLO-2
The upper plate, the lower plate, the first lattice, and the second lattice may be made from titanium. The first lattice and the second lattice may each include a first pattern, a size of the opening, and a diameter of the screw member selected such that that rotation of the screw member about the longitudinal axis moves the screw member within the opening and expands the expandable intervertebral implant along a cephalad-caudal axis and along a medial-lateral axis to a target expanded configuration.
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FLO-2
One general aspect can include an expandable intervertebral implant that may have an upper plate that may have an upper lattice, a first upper side, and a second upper side, a lower plate that may have a lower lattice, a first lower side and a second lower side, a first lattice that connects the first upper side of the upper plate to the first lower side of the lower plate, a second lattice that connects the second upper side of the upper plate to the second lower side of the lower plate, an opening having internal threads about a longitudinal axis between the upper plate, the lower plate, the first lattice, and the second lattice, and a screw member that may have a shank that may have threads that engage the internal threads within the opening, the screw member having a diameter such that rotation of the screw member about the longitudinal axis separates the upper plate from the lower plate by deforming the first lattice and the second lattice and separates the first lattice from the second lattice by deforming the upper lattice and the lower lattice.
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FLO-2
The expandable intervertebral implant may have a proximal end and a distal end. The first mesh may span the first wall from the first upper side to the first lower side and from the proximal end to the distal end of the expandable intervertebral implant. The second mesh may span the second wall from the second upper side to the second lower side and from the proximal end to the distal end of the expandable intervertebral implant. The upper mesh may span the upper plate from the first upper side to the second upper side and from the proximal end to the distal end of the expandable intervertebral implant. The lower mesh may span the lower plate from the first lower side to the second lower side and from the proximal end to the distal end of the expandable intervertebral implant.
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FLO-2
In one aspect, the first mesh and the second mesh may each have a first pattern and the upper mesh and the lower mesh may each have a second pattern. The first pattern and the second pattern may each be selected such that activation of the driver of the expansion mechanism causes a first predetermined increase in a distance between the upper plate and the lower plate that differs from a second predetermined increase in a distance between the first wall and the second wall.
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FLO-2
The opening may have an elliptical cross-section that may have a height that is smaller than a width of the elliptical cross-section. The first mesh and the second mesh may each have a first pattern. The first pattern and the height of the elliptical cross-section of the opening may each be selected such that activation of the driver of the expansion mechanism causes a predetermined increase in distance, a predetermined spacing, between the upper plate and the lower plate.
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FLO-2
Similarly, an expandable intervertebral implant having fewer parts may be fabricated with smaller dimensions in a collapsed configuration. A smaller expandable intervertebral implant can enable MIS surgery techniques that use a narrower incision and/or narrower cannulas to perform the procedure. A smaller expandable intervertebral implant can facilitate positioning and placement of the implant. In certain circumstances two or more expandable intervertebral implants may be used to provide desired support for vertebral bodies.
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FLO-2
One general aspect can include an expandable intervertebral implant that may have an upper plate that may have an upper mesh, a first upper side, and a second upper side, a lower plate that may have a lower mesh, a first lower side, and a second lower side, a first wall that connects the first upper side of the upper plate to the first lower side of the lower plate, the first wall may have a first mesh, a second wall that connects the second upper side of the upper plate to the second lower side of the lower plate, the second wall may have a second mesh, an opening having a longitudinal axis between the upper plate, the lower plate, the first wall, and the second wall, and an expansion mechanism that may have a driver that expands the upper plate and the lower plate away from each other along a cephalad-caudal axis by expanding the first mesh and the second mesh and moves the first wall and the second wall away from each other along a medial-lateral axis by expanding the upper mesh and the lower mesh.
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FLO-2
The first lattice and the second lattice may be made of metal. The first lattice and the second lattice each have a common pattern. The pattern, and/or the common pattern, may have one or more of a set of geometric shapes that include pores.
10
Added by DJM 2 2021
2/18/21, 12:00 AM
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