Electro - drawn drug - loaded biodegradable polymer microneedles as a viable route to
hypodermic injection R. Vecchione, S. Coppola, E. Esposito, C. Casale, V. Vespini, S. Grilli, P. Ferraro, and P. A. Netti Advanced Functional Materials 24, 3515â $ «3523 (2014).
This technique involves the
injection of cyanocobalamin (vitamin B12) or saline into the acupoint using a 27 to 29 gauge
hypodermic needle and 0.5 to 1 cc syringe.