Transdermal therapeutic system for the administration of drugs having bronchodilating activity
AssigneeZambon Group S.p.A.
InventorsFederico Stroppolo, Daniele Bonadeo, Annibale Gazzaniga
Life of this patent
Estimating the term…
Abstract
A transdermal therapeutic system in polymer matrix for the administration of bronchodilator drugs is described, in which the matrix comprises a mixture of medium and high molecular weight polyisobutylene in a ratio comprised between 1 and 2.3.
Claims7
A transdermal therapeutic system in polymer matrix for the administration of drugs having bronchodilating activity, said system consisting essentially of a substance having bronchodilating activity suspended in solid form and a matrix in which said substance is suspended, said matrix comprising from 10% to 60% by weight of medium molecular weight polyisobutylene having a molecular weight higher than 5,000 and up to 500,000 and from 9% to 25% by weight of high molecular weight polyisobutylene having a molecular weight higher than 500,000, the weight ratio between the medium and the high molecular weight polyisobutylene being from 1 to 2.3.
Dependencies are inferred from the claim text.