Transdermal drug delivery by electroincorporation of vesicles
First Claim
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1. A method of molecular delivery through a surface tissue, comprising the steps of:
- selecting a quantity of molecules to be delivered through the surface tissue;
selecting a quantity of vesicles as carriers;
encapsulating said molecules in said vesicles;
contacting a selected surface area of the surface tissue with a quantity of said vesicles; and
applying a pulsed electric field of sufficient amplitude and duration to induce pores in the surface tissue and to induce transport of said vesicles through said pores into a underlying tissue to enable diffusion of said molecules into the tissue.
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Abstract
A method of transdermal molecular delivery comprises the steps of encapsulating molecules to be delivered in a vesicle, contacting a selected area of a tissue surface with a solution of the vesicles, and applying a pulsed electric field of sufficient amplitude to induce dielectric breakdown of the stratum corneum and to induce transport of the intact vesicle through the pores in the stratum corneum into the underlying tissue to enable diffusion of molecules into the tissue.
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Citations
20 Claims
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1. A method of molecular delivery through a surface tissue, comprising the steps of:
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selecting a quantity of molecules to be delivered through the surface tissue; selecting a quantity of vesicles as carriers; encapsulating said molecules in said vesicles; contacting a selected surface area of the surface tissue with a quantity of said vesicles; and applying a pulsed electric field of sufficient amplitude and duration to induce pores in the surface tissue and to induce transport of said vesicles through said pores into a underlying tissue to enable diffusion of said molecules into the tissue. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of transdermal delivery of molecules, comprising the steps of:
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encapsulating molecules to be delivered in a vesicle; contacting a selected area of stratum corneum surface with a quantity of the encapsulated molecules; and applying a pulsed electric field of sufficient amplitude from about five volts to about six hundred volts and sufficient duration of from about one hundred usec to about one hundred msec to create open pores in said area of stratum corneum of sufficient size to receive vesicles and to induce passage of said vesicles through said stratum corneum into underlying tissue. - View Dependent Claims (15, 16, 20)
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17. A method of transdermal delivery of molecules, comprising the steps of:
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encapsulating molecules to be delivered in a matrix of a vesicle, wherein the vesicles are constructed to have a time release characteristic; contacting a selected area of stratum corneum surface with a quantity of the encapsulated molecules; and applying a pulsed electric field of sufficient amplitude from about five volts to about six hundred volts and sufficient duration of from about one hundred usec to about one hundred msec to create open pores in the area of stratum corneum of sufficient size to receive the vesicles and to induce passage of the vesicles through the stratum corneum into the tissue. - View Dependent Claims (18, 19)
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Specification