A - Human Necessities – 61 – K
Patent
A - Human Necessities
61
K
A61K 47/26 (2006.01) A61K 9/08 (2006.01) A61K 31/445 (2006.01)
Patent
CA 2581287
The present invention relates to novel anesthetic compositions containing a non-polymeric carrier material and an anesthetic, where the compositions are suitable for providing a sustained local anesthesia without an initial burst and having a duration for about 24 hours or longer. Certain compositions are also provided that include a first anesthetic and a second anesthetic. In such compositions, the second anesthetic is a solvent for the first anesthetic and provides an initial anesthetic effect upon administration to a subject. The non-polymeric carrier may optionally be a high viscosity liquid carrier material such as a suitable sugar ester. The compositions can further include one or more additional ingredients including active and inactive materials. Methods of using the compositions of the invention to produce a sustained anesthetic effect at a site in a subject are also provided. Preferably the composition contains bupivacaine and a sugar ester such as saib.
La présente invention concerne de nouvelles compositions anesthésiques contenant un matériau porteur non polymère et un anesthésique, ces compositions convenant pour fournir une anesthésie locale soutenue sans poussée initiale présentant une durée d'environ 24 heures voire supérieure. Certaines compositions comprennent un premier anesthésique et un second anesthésique. Dans ces compositions, le second anesthésique est un solvant pour le premier anesthésique et il fournit un effet anesthésique initial lors de l'administration à un sujet. Le porteur non polymère peut éventuellement être un matériau porteur liquide de haute viscosité tel qu'un ester de sucre adapté. Ces compositions peuvent également comprendre une ou plusieurs substances additionnelles comprenant des matériaux actifs et inactifs. Cette invention concerne aussi des procédés d'utilisation de ces compositions pour produire un effet anesthésique soutenu au niveau d'un site d'un sujet.
Durect Corporation
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