Patent ID: 6989195

Claim:
A reversed cubic or reversed hexagonal phase material comprising water or glycerol or a water/glycerol mixture an anesthetic, and a surfactant selected from the group consisting of fluorosurfactants, BRIJ-type surfactants, Triton-like surfactants, surfactants with polymer chains, peptide-based surfactants, isoprenoids, plasmologens, cerebrosides, sulphatides, gangliosides, cyclopentatriol lipids, dimethylaminopropane lipids, lysolipids, lysolecithins, anionic surfactants, cationic surfactants, zwitterionic or semipolar surfactants, benzalkonium chloride, sodium deoxycholate, myristyl-gamma-picolinium chloride, polyoxyl 35 castor oil, sorbitan monopalmitate, and sodium 2-ethylhexanoic acid.