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US 12,594,169 B2Granted
Expandable interbody
AssigneeMiRus LLC
InventorsJay Yadav, Noah Roth, Wayne Gray, Charles Brenner
Life of this patent
Estimating the term…
Abstract
An expandable interbody device used as a prosthesis during spinal surgery. The expandable interbody device is configured to be inserted into the space between spinal disks to provide stability. The expandable interbody device includes a drive block, a linkage block, a drive screw, a first endplate, a second endplate, and at least two linkages. Rotation of the drive screw causes movement of the linkage block relative to the drive block and/or movement of the first endplate relative to the second endplate.
Claims30
An expandable interbody device;
- said expandable interbody device comprising:
- a drive block;
- said drive block includes a drive block opening;
- a linkage block;
- said linkage block includes a linkage housing and a linkage bar;
- said linkage bar is at least partially positioned in said linkage housing;
- said linkage block includes a linkage block opening;
- a block engagement arrangement;
- a drive screw;
- said drive screw includes a head and body portion;
- said drive screw at least partially positioned within said drive block opening and at least partially position in said linkage block opening;
- said drive screw rotatable relative to said drive block opening and said linkage block opening;
- said head is rotatably positioned in within said drive block opening;
- a first endplate and a second endplate;
- said first endplate includes a first endplate engagement arrangement;
- said second endplate includes a second endplate engagement arrangement;
- said first and second endplate engagement arrangements are configured to engage with said block engagement arrangement;
- and, a first linkage arrangement;
- said first linkage arrangement includes first and second linkages;
- said first linkage is rotatably coupled to said linkage block and engages said first endplate;
- said second linkage is rotatably coupled to said linkage block and engages said second endplate;
- wherein rotation of said drive screw causes one or more of I) movement of at least one of said linkage block and said drive block, II) movement of at least one of said first endplate and said second endplate, and/or III) said first and/or second endplate engagement arrangements moving relative to at least one of said linkage block and said drive block;
- and wherein said engagement of said block engagement arrangement with said first endplate engagement and said second endplate engagement is configured to at least partially guide movement of said first and/or second endplates relative to said drive block and/or said linkage block during rotation of said drive screw, wherein said first linkage of said first linkage arrangement rotatably engages said first endplate;
- second linkage of said first linkage arrangement rotatably engage said second endplate;
- said first linkage of said first linkage arrangement is configured to engage with said first endplate, but is not connected to said first endplate;
- said second linkage of said first linkage arrangement is configured to engage with said second endplate, but is not connected to said second endplate.
23 more elements
The expandable interbody device as defined in 9, wherein said first linkage of said second linkage arrangement rotatably engages said first endplate;
- second linkage of said second linkage arrangement rotatably engages said second endplate;
- said first linkage of said second linkage arrangement is configured to engage with said first endplate, but is not connected to said first endplate;
- said second linkage of said second linkage arrangement is configured to engage with said second endplate, but is not connected to said second endplate.
A method for using an expandable prosthetic device comprising:
- providing said expandable prosthetic device;
- said expandable prosthetic device comprises:
- a drive block;
- said drive block includes a drive block opening;
- a linkage block;
- said linkage block includes a linkage housing and a linkage bar;
- said linkage bar is at least partially positioned in said linkage housing;
- said linkage block includes a linkage block opening;
- a block engagement arrangement;
- a drive screw;
- said drive screw includes a head and body portion;
- said drive screw at least partially positioned within said drive block opening and at least partially position in said linkage block opening;
- said drive screw rotatable relative to said drive block opening and said linkage block opening;
- said head is rotatably positioned in within said drive block opening;
- a first endplate and a second endplate;
- said first endplate includes a first endplate engagement arrangement;
- said second endplate includes a second endplate engagement arrangement;
- said first and second endplate engagement arrangements are configured to engage with said block engagement arrangement;
- and, a first linkage arrangement;
- said first linkage arrangement includes first and second linkages;
- said first linkage is rotatably coupled to said linkage block and engages said first endplate;
- said second linkage is rotatably coupled to said linkage block and engages said second endplate;
- wherein rotation of said drive screw causes one or more of I) movement of at least one of said linkage block and said drive block, II) movement of at least one of said first endplate and said second endplate, and/or III) said first and/or second endplate engagement arrangements moving relative to at least one of said linkage block and said drive block;
- and wherein said engagement of said block engagement arrangement with said first endplate engagement and said second endplate engagement is configured to at least partially guide movement of said first and/or second endplates relative to said drive block and/or said linkage block during rotation of said drive screw;
- inserting said expandable prosthetic device into a patient;
- and causing said drive screw to rotate which results in A) movement of said linkage block relative to said drive block and B) movement of said first endplate relative to said second endplate, wherein said first linkage of said first linkage arrangement rotatably engages said first endplate;
- second linkage of said first linkage arrangement rotatably engage engages said second endplate;
- said first linkage of said first linkage arrangement is configured to engage with said first endplate, but is not connected to said first endplate:
- said second linkage of said first linkage arrangement is configured to engage with said second endplate, but is not connected to said second endplate.
26 more elements
The method as defined in 24, wherein said first linkage of said second linkage arrangement rotatably engages said first endplate;
- second linkage of said second linkage arrangement rotatably engages said second endplate;
- said first linkage of said second linkage arrangement is configured to engage with said first endplate, but is not connected to said first endplate;
- said second linkage of said second linkage arrangement is configured to engage with said second endplate, but is not connected to said second endplate.
Dependencies are inferred from the claim text.