Medical device with porous surface for controlled drug release and method of making the same
US6652581B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 7, 1998 |
| Grant date | Nov 25, 2003 |
| Priority date | — |
| Expiry date | Jul 7, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L2300/42
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The medical devices of the invention have a portion with a porous surface for release of at least one biologically active agent therefrom. The porous surface is made of a material such as a polymer having a plurality of voids. To load the porous surface with a biologically active agent or drug, an electrophoresis method is employed. In this method, a device having a porous surface is placed into a drug solution or suspension, along with an electrode. An electric current is applied to the device and electrode. Under such a current, the drug, which has a positive or negative charge, will be loaded into the pores or voids of the porous surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.