Methods and apparatus are provided for converting standard catheters or balloon catheters into drug infusion devices on an as-needed basis in a sterile environment, and which permit re-use of catheter devices previously used in a preceding non-invasive procedure. Such characteristics include the composition of each search results webpage as well as which search term elements are present in a webpage located at a URL corresponding to a search result out of those search term elements that were submitted to a search engine to produce the search results webpage. An inner circumference side end is arranged at an outer circumference side of any one of the vanes. A plurality of elongated arc-shaped grooves is defined on the second surface. The housing defines an opening adjacent to the electrodes for receiving metal, such as hypodermic needles, interveinous needles, lancets, etc.