Skin vibration method for topical targeted delivery of...

A - Human Necessities – 61 – M

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Details

A61M 37/00 (2006.01) A61M 35/00 (2006.01) A61K 45/06 (2006.01) A61N 5/00 (2006.01) A61N 5/067 (2006.01) A61P 17/14 (2006.01)

Patent

CA 2269919

The present invention provides methods and apparatuses for use in providing rapid, selective and effective targeted delivery of beneficial substances into hair follicles by use of a vibrator (1) for vibrating a chamber with a substance (2) to be delivered to the skin (3). The invention relies on the use of a vibrational method of delivery of substances of different size from small molecules up to particles compatible with the diameter of hair strand into the hair bulb. The skin is subjected to the vibration of about 1 Hz to about 100 Hz frequency, and 0.1 mm to about 10 mm amplitude, an amount which is sufficient to cause mechanical shifts in different directions of skin structure without damage. This results in follicle effective uptake of the tested substances such as carbon particles of different size as well as melanin. The methods and apparatuses of the present invention are particularly useful in conjunction with photosensitizing agents and electromagnetic irradiation. Such a combination is used to target the delivery ofagent within hair follicles and then subsequently activate the agent.

L'invention concerne des méthodes et des procédés à utiliser pour la libération rapide, efficace, sélective et ciblée de substances bénéfiques dans les follicules pileux, au moyen d'un vibreur (1) qui fait vibrer une chambre contenant une substance (2) à libérer dans la peau (3). A cet effet, on utilise une méthode vibratoire de libération dans le bulbe de substances de différentes tailles, soit des petites particules jusqu'à des particules compatibles avec le diamètre du cheveu. La peau est exposée à une vibration d'une fréquence d'environ 1 Hz à 100 Hz, et d'une amplitude d'environ 0,1 mm à 10 mm, ce qui suffit pour que des déplacements mécaniques dans différentes directions de la structure de la peau soient produits sans dommage. Ainsi, le follicule absorbe efficacement les substances testées, telles que des particules de carbone de différentes tailles ainsi que de la mélanine. Les méthodes et appareils de l'invention sont particulièrement utiles combinés à des photosensibilisants et des irradiations électromagnétiques. Cette combinaison est utilisée pour cibler la libération d'un agent dans les follicules pileux et activer ensuite l'agent.

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