Invention Grant
- Patent Title: Method of applying drug-release coatings
- Patent Title (中): 使用药物释放涂层的方法
-
Application No.: US935371Application Date: 1997-09-22
-
Publication No.: US5980972APublication Date: 1999-11-09
- Inventor: Ni Ding
- Applicant: Ni Ding
- Applicant Address: MN Plymouth
- Assignee: Schneider (USA) Inc
- Current Assignee: Schneider (USA) Inc
- Current Assignee Address: MN Plymouth
- Main IPC: A61M31/00
- IPC: A61M31/00 ; A61F2/00 ; A61F2/82 ; A61K47/48 ; A61L31/04 ; A61L31/10 ; A61L31/16 ; A61L33/00 ; B05D1/34 ; A61L27/00 ; B05D1/02 ; B05D1/18
Abstract:
The invention is directed to a method of applying drug-release coatings whereby a polymer can be dissolved in a first solvent (solvent A) to form a polymer system and a drug can be dissolved or suspended in a second solvent (solvent B) to form a drug system. The coating or layer of coating so formed comprises a substantially uniform combination of the drug and polymer. Solvent B can be the same as or different than solvent A. The coating can be applied on a stent body by separately spraying or dipping the polymer system and the drug system onto the devices. The coating can be accomplished by either applying the polymer and drug systems sequentially or simultaneously. In certain embodiments, a drug can be suspended in solvent B. In some cases, three or more systems can be utilized. For instance, a third system containing pure solvent A or B can smooth the coating surface, if the solvent of the third spraying system is compatible with the polymer matrix.
Public/Granted literature
- USD339674S Shoe midsole periphery Public/Granted day:1993-09-28
Information query