| Heyer | W.T., U.S. Scientist, *1902. See: Heyer-Pudenz valve. (05 Mar 2000) |
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| Heyer-Pudenz valve | A valve used in the shunting procedure for hydrocephaly; consisting of a catheter-valve system in which the ventricular catheter leads the cerebrospinal fluid into a one-way pump through which the cerebrospinal fluid passes down the distal catheter into the right atrium of the heart. (05 Mar 2000) |