Thin sharp needles around the dura: it is all about good performance.
Rettig
H C
HC
Gielen
M J M
MJ
Jack
N T M
NT
D001917:Brachial Plexus; D004388:Dura Mater; D004867:Equipment Design; D006801:Humans; D009339:Needles; D009407:Nerve Block / Q000295:instrumentation*