Bioteque Nichols Silicone Counsellor Dilators. For support or to distend the vaginal canal. The Nichols Counsellor is contraindicated in acute genital tract infections, pelvic infections or noncompliant patients. Following the construction of a neovagina or following a vaginal plasty operation performed to enlarge a small vagina for the relief of vaginismus, it is usually desirable to support or distend the vaginal canal with a device to: (1) prevent unwanted contraction of the scar or (2) relax the muscles that surround the vagina. 1/EA. Priced per each. Select "Size" desired from "Options" above.