| 摘要 |
A patch for iontophoretic transdermal application of a medicant, where the patch includes a border portion disposed about an aperture. The border portion can include a first polarity electrode in electrical communication with the medicant, and a second border portion including a second electrode having a second polarity opposite the first electrode polarity. One patch has a liftable cover, preferably a transparent and non-adherent cover, disposed over the patch aperture. A preferred medicant for inclusion in the present invention is a local anesthetic or analgesic. Other medicants such as anti-inflammatory agents or anti-infective agents may be used to locally reduce inflammation, contain infection, and alleviate pain. The present invention can allow performing a field block anesthetic about an epidermal target site. The present invention can allow observing a target or treatment site while leaving the patch in place. An invasive medical procedure can be performed through the patch aperture, and pre-operative and post-operative procedures can also be performed through the patch aperture.
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