is manufactured as a hollow shaft metal needle without insulating covering over the outside surface and without a stimulating wire 14 a non stimulating catheter 61 is preloaded inside the needle 11 and covered with a protective sheath 68 in the same way as in other embodiments the catheter 39 s 61 proximal end 63 may be grasped by a catheter adaptor or it may be left free inside the catheter sheath 68 in various embodiments an ultrasound device may be used to visualize the target nerve and the needle 11 as the needle 11 travels through the patient 39 s skin and into the body and to place needle tip 15 in a position that is close to that target nerve in embodiment described above using ultrasound device the needle tip 15 is placed next to a nerve then the catheter 61 is advanced through the catheter sheath 68 and through the needle 11 and extrudes through and beyond the needle tip 15 the needle 11 is removed from the patient 39 s body and the catheter adaptor 71 is attached reattached to the catheter 39 s proximal end 63 correct positioning of the catheter tip 65 can be verified by visualizing the catheter 61 through the use of an ultrasound device or by injecting doses of local anesthetics into the catheter lumen and around the target nerve and confirming the occurrence of a nerve block in an embodiment of the invention assembled using a non stimulating catheter 61 a non stimulating catheter adaptor 71 may be used while a stimulating catheter adaptor 71 is comprised of components that allow a nerve stimulator device to be connected to the catheter 39 s proximal end 63 to send electrical impulses to the catheter 61 a non stimulating catheter adaptor 71.