Nogawa R, et al. - Researchers herein compared the incidences of leakage from the catheter insertion site during continuous femoral nerve block when using the catheter-through-needle, Contiplex Touhy and the newly developed catheter-over-needle, Contiplex C. They noted that use of Contiplex C more effectively prevented leakage of local anesthetics from the insertion site during continuous femoral nerve block, compared with Contiplex Touphy.