Details for Patent: 5,741,510

Summary for Patent: 5,741,510

Title:	Adhesive patch for applying analgesic medication to the skin
Abstract:	A medication patch to be applied to the skin includes a self-supporting backing layer to give the patch the required integrity and strength by acting as a supporting framework for other components, and a flexible hydrophilic pressure-sensitive adhesive reservoir comprising a natural or synthetic polymer for the sustained release of medication to be absorbed topically through the skin into the body of a patient. The reservoir has two portions: first, an external coating layer with an exposed lower skin-contacting surface that forms a pressure-sensitive bond with the skin, and second, an upper internal portion which infiltrates the porous backing and becomes solidified therein after being applied so that the reservoir and the backing are unified, enabling the backing itself to act as a storage location for the medication-containing reservoir. The medication within the reservoir migrates over time from within the backing through the lower coating layer and passes through the skin to provide sustained release of the medication into the body of a patient.
Inventor(s):	Rolf; David (Minneapolis, MN), Sjoblom Urmann; Elisabeth K. (Tomahawk, WI)
Assignee:	Lectec Corporation (Minnetonka, MN)
Application Number:	08/629,191
Patent Claim Types: see list of patent claims	Delivery;

Drugs Protected by US Patent 5,741,510

Applicant	Tradename	Generic Name	Dosage	NDA	Approval Date	TE	Type	RLD	RS	Patent No.	Patent Expiration	Product	Substance	Delist Req.	Patented / Exclusive Use	Submissiondate

International Family Members for US Patent 5,741,510

Country	Patent Number	Estimated Expiration	Supplementary Protection Certificate	SPC Country	SPC Expiration
Austria	269744
Australia	1002495
Australia	676623
Canada	2133598
Germany	69433859
Denmark	0674913
European Patent Office	0674913