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Bodiless bone fusion device, apparatus and method

  • US 10,098,757 B2
  • Filed: 03/13/2014
  • Issued: 10/16/2018
  • Est. Priority Date: 03/15/2013
  • Status: Active Grant
First Claim
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1. A bodiless bone fusion device for insertion into a desired location comprising:

  • an extending mechanism including a plurality of extending blocks all mechanically coupled with a single body of a positioning element such that rotation of the positioning element causes the plurality of extending blocks to move with respect to the positioning element;

    a first plate having a first body;

    a second plate having a second body separate and distinct from the first body, the first and second plates straddling the extending mechanism and mechanically coupled with the plurality of extending blocks such that when the plurality of extending blocks move with respect to the positioning element, the plates move along a path with respect to each other between a retracted position in which the plates are adjacent to each other to an extended position in which the plates are spread apart from and do not directly contact each other, wherein the plates are sized such that at least a portion of a perimeter of the plates about the path align with an outermost perimeter of the device about the path, wherein the extending blocks move away from each other to opposite ends of the single body of the positioning element when causing the plates to move to the extended position, and further wherein the extending blocks directly contact and support opposite ends of both of the plates when in the extended position; and

    one or more biasing elements physically coupled with the first plate and the second plate and positioned such that in the extended position the biasing elements extend from the first plate to the second plate through a gap between the first plate and the second plate, and further wherein the one or more biasing elements apply a force resisting the movement of the plates from the retracted position to the extended position.

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