Breakage of the adjustment helix in four adjustable Medos-Hakim valves

K. Dette, F. Ebinger, A. Unterberg & A. Aschoff
Objective: The filigree adjustment rotor of the Codman-Medos (Medos-P) valve has a relatively soft silicone and plastic housing. Inadequate pumping manoeuvres and shocks are a risk for breaking out or decentering the rotor. There are only a few reports in the literature about breakage of Medos-P [for full text, please go to the a.m. URL]