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Enhanced cage insertion assembly

  • US 10,327,911 B2
  • Filed: 07/19/2017
  • Issued: 06/25/2019
  • Est. Priority Date: 06/24/2010
  • Status: Active Grant
First Claim
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1. An assembly comprising:

  • i) an intervertebral fusion cage having curved, substantially parallel sidewalls, andii) an inserter instrument for inserting the intervertebral fusion cage, comprising;

    a) a threaded securement rod that mates with the cage via screw threads;

    b) a cannulated cage holder to receive the rod and hold the cage in position; and

    c) a bulleted cannulated, extensible and retractable sheath extending from the cage holder,wherein the sheath is curved and comprises a superelastic shape memory material having a curved configuration and a straight configuration,wherein the cannulated cage holder holds the cage in position as the sheath is retracted, wherein the sheath comprises curved sidewalls having a geometry substantially similar to the curved, substantially parallel sidewalls of the cage, thereby providing for shielded placement of the cage in a final location prior to sheath retraction.

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