Ultrasound-enhanced delivery of materials into and through the skin
First Claim
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1. A method for enhancing the rate of permeation of a drug medium into a selected intact area of an individual'"'"'s body surface, which method comprises:
- (a) applying ultrasound having a frequency of above 10 MHz to said selected area, at an intensity and for a period of time effective to enhance the permeability of said selected area;
(b) contacting the selected area with the drug medium; and
(c) effecting passage of said drug medium into and through said selected area by means of iontophoresis.
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Abstract
A method for enhancing the permeability of the skin or other biological membrane to a material such as a drug is disclosed. In the method, the drug is delivered in conjunction with ultrasound having a frequency of above about 10 MHz. The method may also be used in conjunction with chemical permeation enhancers and/or with iontophoresis.
175 Citations
21 Claims
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1. A method for enhancing the rate of permeation of a drug medium into a selected intact area of an individual'"'"'s body surface, which method comprises:
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(a) applying ultrasound having a frequency of above 10 MHz to said selected area, at an intensity and for a period of time effective to enhance the permeability of said selected area; (b) contacting the selected area with the drug medium; and (c) effecting passage of said drug medium into and through said selected area by means of iontophoresis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification