Electroporation probe with selectable injection rates and selectable electric field strength

A method of providing electroporation and a medicinal solution at a target site, said method comprising:

• placing a tip, said tip being at a distal end of a hollow tubular probe, and a distal end of a tubular movable sleeve covering at least a partial length of said probe on a target site, said hollow tubular probe having a proximal end, and a plurality of perforations towards the distal end, said perforations connecting the hollow interior of said probe with its exterior, said proximal end being connected to a fluid injector, said tubular movable sleeve being slidable longitudinally along the outer surface of the probe between a first position sealing each of said perforations and a second position unsealing each of said perforations;
• achieving a desired separation between said distal end of said movable sleeve and said tip by sliding said movable sleeve using a sliding tab attached to the tubular sleeve such that a longitudinal movement of the sliding tab away from the tip of the probe causes said movable sleeve to slide from the first position towards the second position, said sliding tab being included in a probe holder having an interior channel wherein said tubular movable sleeve extends through the interior channel;
• and
• performing at least one of the following steps:
• i) enabling an electrical connection between a first electrical conductor lead connected to said distal end of said movable sleeve with a first terminal of a power source and, enabling an electrical connection between a second electrical conductor lead connected to said tip of said probe with a second terminal of the power source for generation of an electroporation electric field between said tip and said distal end of said movable sleeve;
• and
• ii) delivering a medicinal solution to the target site by injecting said medicinal solution into the probe, for being ejected from unsealed perforations on the probe, through the fluid injector.