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Surgical access system and related methods

  • US 9,265,493 B2
  • Filed: 01/16/2015
  • Issued: 02/23/2016
  • Est. Priority Date: 09/25/2003
  • Status: Active Grant
First Claim
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1. A system for accessing a surgical target site, the system comprising:

  • a trans-psoas dilator system, which includes at least a first dilator cannula, to create a tissue distraction corridor along the lateral, trans-psoas path through bodily tissue to the targeted intervertebral disc of the lumbar spine;

    a three-bladed tissue retraction assembly to maintain the tissue distraction corridor along the lateral, trans-psoas path through bodily tissue to the targeted intervertebral disc of the lumbar spine, the three-bladed retractor comprising;

    a caudal-most retractor blade connectable at a proximal end of the caudal-most retractor blade;

    a cephalad-most retractor blade connectable at a proximal end of the cephalad-most retractor blade;

    a posterior-most retractor blade connectable at a proximal end of the posterior-most retractor blade;

    a first retractor arm having a first length extending between a first proximal end and a first distal end, the first retractor arm comprising a first blade connecting portion connectable to the proximal end of the caudal-most retractor blade;

    a second retractor arm having a second length extending between a second proximal end and a second distal end, the second retractor arm comprising a second blade connecting portion connectable to the proximal end of the cephalad-most retractor blade;

    a translating member having a third length extending between a third proximal end and a third distal end, the translating member being translatable in response to rotation of an actuating member and the translating member comprising a third blade connecting portion connectable to the proximal end of the posterior-most retractor blade; and

    a coupling mechanism hingedly connecting the first pivot portion of the first retractor arm and the second pivot portion of the second retractor arm such that the first retractor arm is pivotable with respect to the second retractor arm about an axis that extends through the translating member; and

    a spinal fusion implant sized and shaped to insert between the retractor blades along the trans-psoas path and into the targeted intervertebral disc of the lumbar spine while the retractor blades maintain the tissue-distraction corridor along the trans-psoas path.

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