Medtronic Strata:

Codman Hakim:

Codman Certas:

Sophysa:

Aesculap Miethke:

Aeesculap proSA

Reference:

Lollis SS, Mamourian AC, Vaccaro TJ, Duhaime A-C. Programmable CSF Shunt Valves: Radiographic Identification and Interpretation. American Journal of Neuroradiology. 2010;31(7):1343-6.

CODMAN CERTAS Plus X-Ray Procedure Guide Brochure. Johnson & Johnson; 2015.