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EPIDURAL NEEDLE FOR SPINAL CORD STIMULATION

  • US 20120232564A1
  • Filed: 03/11/2011
  • Published: 09/13/2012
  • Est. Priority Date: 03/11/2011
  • Status: Abandoned Application
First Claim
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1. An epidural needle for implanting therapy delivery elements in an epidural space, the epidural needle comprising:

  • at least one outer cannula comprising an outer hub at a proximal end, an elongated opening at a curved distal end, and a lumen extending between the outer hub and the elongated opening, the lumen of the outer cannula sized to permit passage of the therapy delivery elements;

    at least one inner cannula including an inner hub at a proximal end, an opening at a distal end, and a lumen extending between the inner hub and the opening, the inner cannula comprising an outer diameter sized to slide freely within the lumen of the outer cannula, the inner and outer hubs including engagement features that maintain the outer cannula in a fixed rotational orientation relative to the inner cannula so that the inner cannula extends substantially across the elongated opening when inserted into the lumen of the outer cannula; and

    at least one stylet comprising a stylet hub, a distal end, and an outer diameter sized to slide freely within the lumen of the inner cannula, the distal end of the stylet extend substantially across the opening of the inner cannula.

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