NCIt definition : A transparent, biocompatible, non-resorbable, homogenous hydrogel containing 97.5%
apyrogenic water and 2.5% of the cross-linked, synthetic polyacrylamide. Upon injection
into the urethral submucosal tissue, the polyacrylamide hydrogel serves as a bulk
forming agent and may possibly increase the strength of the urethral sphincter and
thereby prevent or decrease stress-induced urinary incontinence.;