A submersible pump drop pipe and casing assembly and method of manufacture is disclosed. The apparatus includes a catheter having an elongated flexible body and a tissue infusion apparatus including a hollow infusion needle configured to secure the needle into the tissue when the needle is at least partially inserted into the tissue to help prevent inadvertent removal of the needle from the tissue. The non-viral vector comprises a dequalinium salt subjected to standard liposome production procedures to obtain the vector named DQAsomes. The TFT fabricated including an active layer crystallized according to the present method has significantly improved electrical characteristics such as electron mobility and leakage current as compared to the TFT including a poly-crystal silicon active layer made by conventional methods.