Hyaluronic acid-based gels including lidocaine

  • US 8,450,475 B2
  • Filed: 02/26/2009
  • Issued: 05/28/2013
  • Est. Priority Date: 08/04/2008
  • Status: Active Grant
First Claim
Patent Images

1. A stable, sterile soft tissue filler comprising:

  • a hyaluronic acid (HA) component comprising HA crosslinked with 1,4-butanediol diglycidyl ether (BDDE), and uncrosslinked HA, wherein the HA component comprises greater than about 10% uncrosslinked HA by volume; and

    lidocaine combined with said crosslinked HA component.

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