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MULTI-CHAMBER EXPANDABLE INTERSPINOUS PROCESS SPACER

  • US 20100249841A1
  • Filed: 06/08/2010
  • Published: 09/30/2010
  • Est. Priority Date: 04/28/2006
  • Status: Active Grant
First Claim
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1. An expandable interspinous process spacer comprising:

  • an outer chamber formed of an expandable material;

    an inner expandable chamber disposed within and generally surrounded by the outer chamber;

    the outer chamber changeable from a relatively smaller deflated configuration to a relatively larger inflated configuration via injection of a first biocompatible material;

    the inner chamber changeable from a relatively smaller deflated configuration to a relatively larger inflated configuration via injection of a second biocompatible material;

    the inner chamber changeable from the deflated configuration to the inflated configuration independently of the outer chamber.

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