Minimally invasive spinal disc stabilizer and insertion tool
First Claim
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1. An intervertebral implant comprising:
- a first assembly comprising at least a first elongate element and a second elongate element contacting the first elongate element;
a second assembly contacting the first assembly comprising at least a third elongate element and a fourth elongate element contacting the third elongate element; and
a vertebral contact surface area;
wherein the first assembly is adapted to articulate relative to the second assembly,wherein the first elongate element and second elongate element define a clearance therebetween to enable a limited range of motion between the first elongate element and second elongate element in an interlocked arrangement,wherein the first elongate element is on a first plane,wherein the second elongate element is on a second plane positioned below the first plane,wherein the third elongate element is on a third plane positioned below the second plane,wherein the fourth elongate element is on a fourth plane positioned below the third plane, anda locking mechanism for preventing relative movement between the first elongate element and second elongate when in a locked configuration and allowing relative movement when in an unlocked configuration.
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Abstract
The invention relates to a spinal implant to be inserted between two vertebra to support and stabilize adjacent vertebra and allow for physiological motion. One embodiment of the implant includes an upper assembly and a lower assembly, where the assemblies are adapted to articulate relative to one another. This implant also includes elongate elements that are deployable between a closed position and an open position. Portions of the implant can interlock to form various shapes. The invention includes an implantable device to support the vertebrae, and a minimally invasive method for inserting and deploying the device within the intervertebral space.
176 Citations
26 Claims
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1. An intervertebral implant comprising:
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a first assembly comprising at least a first elongate element and a second elongate element contacting the first elongate element; a second assembly contacting the first assembly comprising at least a third elongate element and a fourth elongate element contacting the third elongate element; and a vertebral contact surface area; wherein the first assembly is adapted to articulate relative to the second assembly, wherein the first elongate element and second elongate element define a clearance therebetween to enable a limited range of motion between the first elongate element and second elongate element in an interlocked arrangement, wherein the first elongate element is on a first plane, wherein the second elongate element is on a second plane positioned below the first plane, wherein the third elongate element is on a third plane positioned below the second plane, wherein the fourth elongate element is on a fourth plane positioned below the third plane, and a locking mechanism for preventing relative movement between the first elongate element and second elongate when in a locked configuration and allowing relative movement when in an unlocked configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. An intervertebral implant comprising in combination:
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a first assembly comprising at least a first elongate element and a second elongate element contacting the first elongate element; said first elongate element extending non-parallel with said second elongate element; a second assembly contacting the first assembly comprising at least a third elongate element and a fourth elongate element contacting the third elongate element; said third elongate element extending non-parallel with said fourth elongate element; wherein said first assembly is adapted to pivot relative to said second assembly, and a locking mechanism for preventing relative movement between the first elongate element and second elongate when in a locked configuration and allowing relative movement when in an unlocked configuration. - View Dependent Claims (22, 23, 24, 25)
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26. An intervertebral implant comprising:
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a first assembly comprising at least a first elongate element and a second elongate element contacting the first elongate element; a second assembly contacting the first assembly comprising at least a third elongate element and a fourth elongate element contacting the third elongate element; and a vertebral contact surface area; wherein the first assembly is adapted to pivot relative to the second assembly, wherein the first elongate element and second elongate element define a clearance therebetween to enable a limited range of motion between the first elongate element and second elongate element in an interlocked arrangement, wherein the first elongate element is on a first plane, wherein the second elongate element is on a second plane positioned below the first plane, wherein the third elongate element is on a third plane positioned below the second plane, wherein the fourth elongate element is on a fourth plane positioned below the third plane, and a locking mechanism for preventing relative movement between the first elongate element and second elongate when in a locked configuration and allowing relative movement when in an unlocked configuration.
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Specification