Transdermal delivery systems

A - Human Necessities – 61 – K

Patent

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Details

A61K 9/70 (2006.01) A61K 31/445 (2006.01)

Patent

CA 2583642

Transdermal delivery systems for administering sufentanil through the skin are provided. The systems contain a sufficient amount of sufentanil to induce and maintain a constant state of analgesia when applied to a subject. The systems are characterized as having one or more features including a high degree of dosage form rate control over flux of sufentanil from the system, a high net flux of sufentanil from the system through the skin, lack of a permeation enhancer, an adhesive member demonstrating superior shear time, a low coefficient of variation in the net flux of sufentanil from the system, a high delivery efficiency, and a substantially constant steady state net flux of sufentanil from the system. Methods of using the transdermal delivery systems to administer a sufficient amount of sufentanil to induce and maintain analgesia for extended periods when applied to a subject are also provided.

L'invention concerne des systèmes d'administration transdermique de sufentanil. Ces systèmes contiennent suffisamment de sufentanil pour assurer et maintenir une analgésie constante chez le sujet. Ces systèmes sont caractérisés en ce qu'ils présentent une ou plusieurs caractéristiques: contrôle élevé de la vitesse de diffusion de la forme posologique du sufentanil par le système; flux net élevé de sufentanil du système à travers la peau; absence d'activateur de perméation; élément adhésif à temps de cisaillement supérieur; faible coefficient de variation du flux net de sufentanil du système; grande efficacité de diffusion; et flux net de sufentanil à l'état stationnaire sensiblement constant. Par ailleurs, l'invention concerne des procédés d'utilisation de ces systèmes d'administration transdermique pour administrer une quantité suffisante de sufentanil à même de provoquer et de maintenir l'analgésie pendant des périodes prolongées après son administration au sujet.

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