Transdermal delivery of beneficial substances effected by a...

A - Human Necessities – 61 – K

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A61K 9/14 (2006.01)

Patent

CA 2563670

The present invention generally relates to the transdermal delivery of substances and, in some embodiments, to the transdermal delivery of beneficial substances by a hostile biophysical environment. In one aspect, various methods for the transdermal delivery of beneficial substances are disclosed. By creating a hostile biophysical environment, beneficial substances may be delivered, according to certain embodiments, through the stratum corneum of the skin into the body. Beneficial substances include, but are not limited to, pharmaceutical agents, drugs, vitamins, co-factors, peptides, dietary supplements, and others. The beneficial effects disclosed include, for instance, relief of pain and inflammation, prevention and healing of ulcers of the skin, relief of headache, improved sexual function and enjoyment, growth of hair on the scalp, improving muscle size and/or function, removing body fat and/or cellulite, treating cancer, treating viral infections and others. A hostile biophysical environment may also be used in conjunction with systems and methods for increasing local blood flow, according to one set of embodiments. For example, by using a nitric oxide donor such as L-arginine, local blood flow may be increased, e.g., by transdermally delivering the nitric oxide precursor. The nitric oxide donor may be the sole cause of increased blood flow, or it may be supplemented with an adjunct such as theophylline.

L'invention concerne de manière générale la distribution transdermique de substances et, dans certains modes de réalisation, la distribution transdermique de substances bénéfiques par un environnement biophysique hostile. L'invention concerne également des procédés variés de distribution transdermique de substances bénéfiques. Selon certains modes de réalisation, la création d'un environnement biophysique hostile permet de distribuer des substances bénéfiques via la couche cornée de l'épiderme dans le corps. Lesdites substances bénéfiques comprennent, notamment, des agents pharmaceutiques, des médicaments, des vitamines, des cofacteurs, des peptides, des compléments alimentaires et autres. Les effets bénéfiques sont, par exemple, le soulagement de la douleur et des inflammations, la prévention et la guérison des ulcères de la peau, le soulagement des maux de tête, l'amélioration de la fonction et de la satisfaction sexuelle, la croissance des cheveux sur le cuir chevelu, l'amélioration de la taille et/ou de la fonction musculaire, l'élimination de la graisse corporelle et/ou de la cellulite, le traitement du cancer, le traitement des infections virales et autres. Dans un ensemble de modes de réalisation, un environnement biophysique hostile peut également être utilisé conjointement avec des systèmes et des procédés permettant d'augmenter le débit sanguin local. L'utilisation d'un donneur d'acide nitrique tel que L-arginine permet d'augmenter le débit sanguin, par exemple, par distribution transdermique d'un précurseur d'acide nitrique. Ledit donneur d'acide nitrique peut être la seule cause de l'augmentation du débit sanguin ou peut être complété par un adjuvant, tel que la théophylline.

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