Vacuum-assisted drug delivery device and method
This invention relates to a device and method for the vacuum-assisted delivery of drugs through an intact surface membrane of an organ.
1. A method for delivering a drug into a tissue of a patient non-invasively for treating a disease or condition in the patient in need thereof, comprising:
placing a surface of a drug reservoir in contact with an epithelial or surface of the tissue to which the surface of the drug reservoir has been conformed such that an air-tight contact between the drug reservoir surface and the epithelial or surface of the tissue is formed and such that a fluid in the drug reservoir is placed in fluid communication through the surface of the drug reservoir with the epithelial or surface of the tissue; and
creating a vacuum within the drug reservoir without disrupting the tissue and to effect diffusion of the fluid in the drug reservoir through the epithelial or surface of the tissue and into the subsurface of the tissue.
2. The method of claim 1 , wherein the surface of the tissue is the epithelial surface.
3. The method of claim 2 , where the fluid comprises a substance that is capable of catalyzing the cross-linking of macromolecules in the tissue.
4. The method of claim 1 , wherein the fluid comprises an anti-microbial, an anti-inflammatory, an analgesic, antiseptic, or an anti-VEGF drug.
5. The method of claim 1 , wherein the delivery of a drug is for the treatment of uveitis, keratoconus, glaucoma, dry eye, diabetic macular edema, age-related macular degeneration, corneal infection or cytomegalovirus retinitis.
6. The method of claim 1 , wherein the vacuum is a pressure between 1 and 100 torr.
7. A method for delivering a drug into the skin of a patient for treating a disease or condition in the patient in need thereof, comprising:
placing a surface of a drug reservoir in contact with a skin surface to which the surface of the drug reservoir forms an air-tight contact between the drug reservoir surface and the skin surface and such that a fluid in the drug reservoir is placed in fluid communication through the surface of the drug reservoir with the skin surface; and
creating a vacuum within the drug reservoir without disrupting the skin and to effect diffusion of the fluid in the drug reservoir through the skin surface and into a subsurface of the skin.
8. The method of claim 7 , wherein the drug is delivered into a sebaceous gland.
9. The method of claim 8 , wherein the drug is delivered through epidermal, dermal, and/or subcutaneous layers of the skin.
10. The method of claim 7 , wherein the drug is delivered into a bloodstream.
11. The method of claim 7 , wherein the drug is delivered into a sweat gland.
12. The method of claim 7 , wherein a vacuum is used to increase extracellular space and/or pore sizes within the skin prior to drug diffusion into the skin.