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FLO-5PROV
FIG. 2H illustrates a proximal end view of the expandable intervertebral implant 100 of FIG. 1A in an expanded configuration and FIG. 2I illustrates a distal end view of the expandable intervertebral implant 100 of FIG. 1A in an expanded configuration. Arrow 248 illustrates a first direction for rotation of the screw member 118 about the axis 246 and arrow 250 illustrates a second direction for rotation of the screw member 118 about the axis 246.
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FLO-5PROV
By way of example, angles between the ramps 214, 222 and wedges 114, 116 can be selected such that the upper endplate 110 moves uniformly vertically relative to the lower endplate 112. In another embodiment, the the ramps 214, 222, wedges 114, 116, and/or angles between them are configured such that a ratio of the first height H1 to the second height H2 (See FIG. 1C, 1D) changes as the exemplary expandable intervertebral implant 100 transitions from a collapsed configuration to a partially expanded configuration or expanded configuration. For example, in an expanded configuration H1 and H2 can be substantially the same.
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FLO-5PROV
In certain embodiments, the proximal wedge 114, distal wedge 116, proximal ramp 214 and/or distal ramp 222 are configured such that the upper endplate 110 move vertically uniformly relative to the lower endplate 112. Consequently, a ratio of the first height H1 to the second height H2 (See FIG. 1C, 1D) remains the substantially the same as the exemplary expandable intervertebral implant 100 transitions from a collapsed configuration to a partially expanded configuration or expanded configuration. In other words, where H1 is greater than H2 in a collapsed configuration, H1 continues to be greater than H2 in a partially expanded configuration or expanded configuration.
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FLO-5PROV
Conversely, movement of the proximal wedge 114 down the ramps 210, 222 causes the upper endplate 110 to move vertically relative to the lower endplate 112 and to move vertically closer to the lower endplate 112. Movement of the distal wedge 116 down the ramps 222,226 causes the upper endplate 110 to move vertically relative to the lower endplate 112 and to move vertically closer to the lower endplate 112.
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FLO-5PROV
Rotating the screw member 118 about the axis 246 in a first direction 248 (See FIG. 2H) draws the proximal wedge 114 up the ramps 210, 222 and the distal wedge 116 up the ramps 222, 226. Rotating the screw member 118 about the axis 246 in a second direction 250 (See FIG. 2H) drives the proximal wedge 114 down the ramps 210, 222 and the distal wedge 116 down the ramps 222, 226. Movement of the proximal wedge 114 up the ramps 210, 222 causes the upper endplate 110 to move vertically relative to the lower endplate 112 and to separate from the lower endplate 112. Movement of the distal wedge 116 up the ramps 222,226 causes the upper endplate 110 to move vertically relative to the lower endplate 112 and to separate from the lower endplate 112.
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FLO-5PROV
FIG. 2F illustrates a first side of the expandable intervertebral implant 100 of FIG. 1A in an expanded configuration and FIG. 2G illustrates a second side of the expandable intervertebral implant 100 of FIG. 1A in an expanded configuration. FIGs. 2F and 2G illustrate that the proximal wedge 114 and distal wedge 116 are closer together than in a collapsed configuration as illustrated in FIGs. 1C and 1D. In the collapsed configuration, shown in FIGs. 1C and 1D, the proximal wedge 114 is closer to the proximal ends 120, 130 and distal wedge 116 is closer to the distal ends 122, 132. In the expanded configuration, shown in FIGs. 2F and 2G, the proximal wedge 114 is closer to the distal wedge 116 and further from the proximal ends 120, 130 and distal wedge 116 is closer to the proximal wedge 114 and further from the distal ends 122, 132.
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FLO-5PROV
FIG. 2A is a perspective view of a proximal end of the expandable intervertebral implant 100 of FIG. 1A in an expanded configuration;
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FLO-5PROV
FIG. 2I illustrates a distal end view of the expandable intervertebral implant 100 of FIG. 1A in an expanded configuration;
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FLO-5PROV
FIG. 2H illustrates a proximal end view of the expandable intervertebral implant 100 of FIG. 1A in an expanded configuration;
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FLO-5PROV
FIG. 2G illustrates a second side of the expandable intervertebral implant 100 of FIG. 1A in an expanded configuration;
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FLO-5PROV
FIG. 2F illustrates a first side of the expandable intervertebral implant 100 of FIG. 1A in an expanded configuration;
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FLO-5PROV
FIG. 2E illustrates a side view of the screw member 118 of the expandable intervertebral implant 100 of FIG. 1A;
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FLO-5PROV
FIG. 2D illustrates a side view of the proximal wedge 114, screw member 118, and distal wedge 116 of the expandable intervertebral implant 100 of FIG. 1A;
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FLO-5PROV
FIG. 2C is a perspective top view of a distal end of the expandable intervertebral implant 100 of FIG. 1A with the upper endplate 110 removed and shown upside down;
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FLO-5PROV
FIG. 2B is a perspective view of a distal end of the expandable intervertebral implant 100 of FIG. 1A in an expanded configuration;
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FLO-5PROV
FIG. 2J is a top view of the expandable intervertebral implant 100 of FIG. 1A in an expanded configuration;
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FLO-5PROV
FIG. 1H is a bottom view of the expandable intervertebral implant 100 of FIG. 1A;
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FLO-5PROV
FIG. 1G is a top view of the expandable intervertebral implant 100 of FIG. 1A;
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FLO-5PROV
FIG. 1F illustrates a distal end view of the expandable intervertebral implant 100 of FIG. 1A;
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FLO-5PROV
FIG. 1E illustrates a proximal end view of the expandable intervertebral implant 100 of FIG. 1A;
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