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Solid-forming local anesthetic formulations for pain control

  • US 10,603,293 B2
  • Filed: 06/14/2018
  • Issued: 03/31/2020
  • Est. Priority Date: 01/14/2010
  • Status: Active Grant
First Claim
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1. A formulation for pain control, comprising:

  • from about 4 wt % to about 10 wt % lidocaine;

    from about 4 wt % to about 10 wt % tetracaine;

    from about 10 wt % to about 18 wt % polyvinyl alcohol;

    from about 2 wt % to about 6 wt % of an emulsifier selected from sorbitan monopalmitate or sorbitan monostearate;

    from about 25.94 wt % to about 51.87 wt % water;

    from about 2 wt % to about 13 wt % petrolatum; and

    from about 18 wt % to about 36 wt % dicalcium phosphate;

    wherein the formulation has an initial viscosity that ranges from about 40,000 centipoise to 370,500 centipoise.

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