| 摘要 |
An implantable defibrillator (1) with a hot can defibrillator electrode (10) having an ionically conductive polymeric coating (70). Polyethylene oxide containing NaCl or a similar ionic medium provides a continuous ionic network from the can to the adjacent body tissue. In certain embodiments, the electrode is chemically etched and coated with a noble metal such as platinum. In other embodiments, a noble metal or an oxide thereof (80), such as platinum black or iridium oxide, is applied to a titanium housing. The conductive polymeric coating (70) is then applied over the porous noble metal or metal oxide. A hot can defibrillator employing th e polymeric coating avoids development of high polarization at the can/tissue interface and maintains a more uniform defibrillation threshold. |
