Item ID #
INCON; Dalkon Ring
Urethane; Nylon; Barium sulfate
Hugh J. Davis, M.D.; Robert Israel, M.D.
Manufacturer and Distributor
Ortho Pharmaceutical Company; Johns Hopkins Hospital, Baltimore, Md.
Chemically inert Ultrathane ring, impregnated with barium sulfate for radiopacity. Blue 000 nylon monofilament cervical threads. See also: U.S. Patent No. 3,431,905, filed 5-19-1966, granted 3-11-1969, by Edmund a Jones for a very similar design.
Physical rights to the device and the photograph of such are retained by Loma Linda University. Copyrights and patent rights are observed in accordance with U. S. copyright and patent laws.
Intrauterine Contraception; Intrauterine Devices; INCON;