Details for Patent: 6,303,142

Title:	Methods and apparatus for improved administration of pharmaceutically active compounds
Abstract:	Methods and apparatus for improving administration of drugs through the use of heat and other physical means. The present invention relates to the use of heat and other physical means in conjunction with specially designed dermal drug delivery systems, conventional commercial dermal drug delivery systems, or drugs delivered into a sub-skin depot site via injection and other methods to alter, mainly increase, the drug release rate from the dermal drug delivery systems or the depot sites to accommodate certain clinical needs.
Inventor(s):	Zhang; Jie (Salt Lake City, UT), Zhang; Hao (Midvale, UT)
Assignee:	Zars, Inc. (Salt Lake City, UT)
Filing Date:	Apr 07, 2000
Application Number:	09/545,591
Claims:	1. A method of treating baseline and suddenly increased pain in a human body comprising: administering an analgesic in a sustained release formulation into a portion of said human body to treat a baseline pain within 3 centimeter of a skin surface; applying an apparatus capable of generating controlled heat for a pre-determined duration of time by exposing an oxygen activated exothermic medium within the apparatus to oxygen and varying the amount of oxygen to which the exothermic medium is exposed to vary a rate of reaction of the exothermic medium proximate said injected, sustained release analgesic at the onset of suddenly increased pain; and increasing the temperature of skin proximate said portion of said human body with said apparatus to achieve a desired increased concentration of said analgesic in said human body. 2. The method of claim 1, wherein said analgesic is selected from the group consisting of fentanyl, sufentanil, alfentanyl, remifentanil, and morphine. 3. The method of claim 1, wherein said sustained release analgesic comprises said analgesic incorporated in a biodegradable, biocompatible polymer. 4. The method of claim 3 wherein said biodegradable, biocompatible polymer is a copolymer of lactic and glycolic acid. 5. The method of claim 3 wherein said biodegradable, biocompatible polymer is selected from the group consisting of poly(DL-lactide), poly(DL-lactide-co-glycolide), poly(DL-lactide-co-.epsilon.-caprolactone), polycaprolactone, and combinations thereof.