Patent ID: 9452163
Filing Date: 2016-09-27
CPC Classification: A61K,A61P

Claim Text:
1. A method for the treatment of pain comprising administering to a subject in need thereof a composition comprising a first population and a second population of beads; the first population of beads being substantially free of polyethylene oxide and comprising an active selected from the group consisting of benzylmorphine, bezitramide, buprenorphine, butorphanol, carfentanil, clonitazene, codeine, desomorphine, dextromoramide, dezocine, diacetylmorphine, diampromide, diamorphone, dihydrocodeine, dihydromorphine, dimenoxadol, dimepheptanol, dimethylthiambutene, diphenoxylate, dioxaphetyl butyrate, diprenorphine, dipipanone, eptazocine, ethoheptazine, ethylmethylthiambutene, ethylmorphine, etonitazene, etorphine, dihydroetorphine, fentanyl, hydrocodone, hydromorphone, β-hydroxy-3-methylfentanyl, hydroxypethidine, isomethadone, ketobemidone, levo-α-acetylmethadol, levorphanol, levophenacylmorphan, lofentanil, meperidine, meptazinol, metazocine, methadone, metopon, morphine, myrophine, nalmefene, narceine, nicomorphine, norlevorphanol, normethadone, nalorphine, nalbuphene, normorphine, norpipanone, o-methylnaltrexone, opium, oxycodone, oxymorphone, papaveretum, pentazocine, pethidine, phenadoxone, phenomorphan, phenazocine, phenoperidine, piminodine, piritramide, propheptazine, promedol, properidine, propoxyphene, remifentanil, sufentanil, tilidine, and tramadol, or pharmaceutically acceptable salts thereof, and the second population of beads being substantially free of any pharmaceutically active ingredient and comprising polyethylene oxide and a permeable or semi-permeable coating selected from the group consisting of an ammonio methacrylate copolymer, a methacrylic acid copolymer and a mixture thereof.