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US 2011/0087328 A1Published application
Centrally driven expandable implant and method
AssigneesWarsaw Orthopedic, Inc., SDGI Holdings, Inc.
InventorsAndrew M. Dickson, James S. Harrop, Dean G. Karahalios, Eric A. Potts, Christopher I. Shaffrey, Jeffrey C. Wang
Life of this patent
Estimating the term…
Abstract
Embodiments of the invention include expandable, implantable devices and methods. Devices expand linearly to provide secure fixation between or among anatomical structures. In some embodiments, an implant replaces one or more vertebral bodies of the spine.
Claims22
1-14. (canceled)
A method of placing an expandable vertebral body replacement device comprising:
- making an incision adjacent to a vertebral body;
- removing at least a portion of the vertebral body;
- placing an expandable vertebral body replacement device on an insertion end of a contracted expansion instrument, wherein the contracted expansion instrument is configured to pass through a central portion of the expandable vertebral body replacement device without extending onto any surface of the expandable vertebral body replacement device that is lateral to an insertion direction;
- inserting the vertebral body replacement device at least in part into a volume left open after removal of the portion of the vertebral body;
- expanding the expansion instrument to secure the vertebral body replacement device;
- and
- removing the expansion instrument through the incision.
4 more elements
(canceled)
A system comprising:
- a first tubular member with a connection end, an opposite skeletal interface end, and a central expansion instrument opening;
- a second tubular member with a connection end configured to engage with the connection end of the first tubular member, the second tubular member having an opposite skeletal interface end, the connection end of the second tubular member having an end surface on a distal most portion of the connection end opposite the skeletal interface end of the second tubular member;
- and
- an expansion instrument insertable through the central expansion instrument opening and expandable against the first tubular member and the end surface of the second tubular member to expand the medical implant.
1 more element
A system comprising:
- an expandable implant having:
- a first tubular member extending along a first axis having a first end portion opposing a second end portion, the first tubular member having a first elongated slot extending along a length of the first tubular member between the first and second end portions and a second elongated slot on an opposing side of the first tubular member from the first elongated
- a second tubular member movably connected to the first tubular member, the second tubular member having a third end portion opposing a fourth end portion, the third end portion defining a first recess and a second recess on an opposing side of the second tubular member from the first recess, wherein the first and second recessed are respectively aligned with the first and second elongated slots to define a first and second openings for receiving an expansion instrument.
Dependencies are inferred from the claim text.