Expandable intervertebral implant, system, kit and method
First Claim
1. An expandable implant for insertion in an intervertebral space defined between a first vertebral body and a second vertebral body, the implant defining an insertion end spaced apart from a trailing end along a longitudinal direction, the implant comprising:
- a first plate defining a first connection groove and a first projection;
a second plate opposed to the first plate along a vertical direction that is perpendicular to the longitudinal direction, the second plate defining a second connection groove and a second projection, wherein the first and second projections are positioned between the first and second connection grooves with respect to the vertical direction;
a first wedge member and a second wedge member spaced from the first wedge member along the longitudinal direction, each wedge member defining;
an inner end and a narrow end spaced apart from the inner end along the longitudinal direction, each wedge member tapering from the inner end to the narrow end, the inner ends of each wedge member facing one another;
a first side surface and a second side surface spaced from the first side surface along a transverse direction that is perpendicular to the longitudinal and vertical directions;
a first ridge and a second ridge spaced from the first ridge with respect to the vertical direction, each of the first and second ridges
1) elongated in a direction extending from the narrow end to the inner end of the associated wedge member, and
2) protruding from one of the first and second side surfaces of the associated wedge member in the transverse direction,wherein the first ridge is received within the first connection groove and overlaps the first projection in the transverse direction so as to interlock the associated wedge member with the first plate, the second ridge is received within the second connection groove and overlaps the second projection in the transverse direction so as to interlock the associated wedge member with the second plate, and the first and second wedge members are configured to translate away from one another along the longitudinal direction along the first and second plates from a first contracted configuration of the first and second wedge members into a second separated configuration of the first and second wedge members; and
an actuation member coupled to the first wedge member and the second wedge member, the actuation member defining a shaft having a proximal end and a distal end spaced from the proximal end along the longitudinal direction, the shaft defining a first threaded portion and a second threaded portion proximal to the first threaded portion, the actuation member defining a flange extending toward the first and second plates, the flange disposed between the first and second threaded portions, the actuation member configured to translate the first and second wedge members from the first contracted configuration into the second separated configuration so as to separate the first plate from the second plate along the vertical direction.
3 Assignments
0 Petitions
Accused Products
Abstract
An implant includes a first plate and a second plate, a first wedge member and a second wedge member spaced from the first wedge member that couple the first and second plates together. The first and second wedge members configured to translate along the first and second plates from a first contracted configuration into a second separated configuration. The implant includes an actuation member coupled to the first wedge member and the second wedge member. The actuating member defines a flange extending toward the first and second plates. The actuation member configured to move the first and second wedge members from the first contracted configuration into the second separated configuration so that the first and second plates separate from each other.
513 Citations
27 Claims
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1. An expandable implant for insertion in an intervertebral space defined between a first vertebral body and a second vertebral body, the implant defining an insertion end spaced apart from a trailing end along a longitudinal direction, the implant comprising:
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a first plate defining a first connection groove and a first projection; a second plate opposed to the first plate along a vertical direction that is perpendicular to the longitudinal direction, the second plate defining a second connection groove and a second projection, wherein the first and second projections are positioned between the first and second connection grooves with respect to the vertical direction; a first wedge member and a second wedge member spaced from the first wedge member along the longitudinal direction, each wedge member defining; an inner end and a narrow end spaced apart from the inner end along the longitudinal direction, each wedge member tapering from the inner end to the narrow end, the inner ends of each wedge member facing one another; a first side surface and a second side surface spaced from the first side surface along a transverse direction that is perpendicular to the longitudinal and vertical directions; a first ridge and a second ridge spaced from the first ridge with respect to the vertical direction, each of the first and second ridges
1) elongated in a direction extending from the narrow end to the inner end of the associated wedge member, and
2) protruding from one of the first and second side surfaces of the associated wedge member in the transverse direction,wherein the first ridge is received within the first connection groove and overlaps the first projection in the transverse direction so as to interlock the associated wedge member with the first plate, the second ridge is received within the second connection groove and overlaps the second projection in the transverse direction so as to interlock the associated wedge member with the second plate, and the first and second wedge members are configured to translate away from one another along the longitudinal direction along the first and second plates from a first contracted configuration of the first and second wedge members into a second separated configuration of the first and second wedge members; and an actuation member coupled to the first wedge member and the second wedge member, the actuation member defining a shaft having a proximal end and a distal end spaced from the proximal end along the longitudinal direction, the shaft defining a first threaded portion and a second threaded portion proximal to the first threaded portion, the actuation member defining a flange extending toward the first and second plates, the flange disposed between the first and second threaded portions, the actuation member configured to translate the first and second wedge members from the first contracted configuration into the second separated configuration so as to separate the first plate from the second plate along the vertical direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. An implant for insertion in an intervertebral space defined between a first vertebral body and a second vertebral body, the implant defining an insertion end spaced apart from an trailing end along a first direction, the implant comprising:
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a first plate defining a first connection groove and a first projection; a second plate opposing the first plate along a second direction that is perpendicular to the first direction, the second plate defining a second connection groove and a second projection, wherein the first and second projections are positioned between the first and second connection grooves with respect to the second direction; a first wedge member and a second wedge member spaced apart from the first wedge member along the first direction so as to define at least a gap between the first and second wedge members, each wedge member defining; a first end and a second end spaced from the first end along the first direction, the first ends of each wedge member facing one another so as to define a gap therebetween; a first side surface and a second side surface spaced from the first side surface along a third direction that is perpendicular to the first and second directions; a first ridge and a second ridge spaced from the first ridge with respect to the second direction, each of the first and second ridges
1) elongated in a direction extending from the first end to the second end of the associated wedge member, and
2) protruding from one of the first and second side surfaces of the associated wedge member in the third direction,wherein the first ridge is received within the first connection groove and overlaps the first projection in the third direction so as to interlock the associated wedge member to the first plate, the second ridge is received within the second groove and overlaps the second projection in the third direction so as to interlock the associated wedge member to the second plate, and the first wedge member and the second wedge member are translatable along the first and second plates along the first direction; an actuation member defining a shaft having a first threaded portion coupled to the first wedge member and a second threaded portion spaced from the first threaded portion along the first direction, the second threaded portion coupled to the second wedge member; and a flange extending radially from the actuation member at least partially into the gap and at least partially into the first and second plates, the flange disposed between the first and second threaded portions of the shaft, wherein, when the actuation member is actuated, the first wedge member and the second wedge member separate from each other along the first direction so as to separate the first plate from the second plate along the second direction. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27)
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Specification