In 1955, Karman, who at the time was working towards his doctorate in psychology and who was not licensed to practice medicine, used a speculum and a nutcracker to perform an abortion on a woman in a California motel room, who subsequently died. He was convicted of providing abortion, which was illegal in California at the time. He served two and a half years in state prison.
Karman also developed the "super coil" abortion technique, which he believed would enable lay practitioners to perform second-trimester abortions with little training or equipment. The coils were inserted into the uterus, where they caused irritation leading to the expulsion of the fetus. The first trial of the super coil method was on Bangladeshi rape victims under the sponsorship of the International Planned Parenthood Federation. These generally resulted in high rates of injury to the mother.
One trial of the super coil method took place in Philadelphia, Pennsylvania, on May 13th and 14th, 1972. Fifteen women in their second trimester traveled from Chicago to Philadelphia, where Kermit Gosnell performed the abortions using Karman's method. A public television crew from a station in New York filmed the procedures at Karman's invitation. 9 of the 15 had complications, 3 of those with major complications.
- Potts, Malcolms; Diggory, Peter; Peel, John (1977). Abortion. Cambridge (UK): Cambridge University. ISBN 978-0-521-29150-7.[page needed]
- Woo, Elaine (May 19, 2008). "Inventor, activist Harvey Karman, 84". Los Angeles Times.
- District Court of Appeal, Second District Division 3, California. People v. Karman. Cr. 5583. November 13, 1956
- Woo, Elaine (May 18, 2008). "Creator of device for safer abortions". Los Angeles Times.
- James Taranto, "Back-Alley Abortion Never Ended", Wall Street Journal, April 18, 2013
- McCullough, Marie (February 25, 2010). "Doctor had role in 1972 fiasco: Kermit B. Gosnell figured in a test of an abortion device that harmed 9 of 15 women". Philadelphia Inquirer.
- Bourne, Judith P.; Berger, Gary S.; Haber, Richard J.; Tyler, Carl W.; Keith, Louis; Knisely, Kristine; Zackler, Jack (1974). "Medical Complications from Induced Abortion by the Super Coil Method". Health Services Reports 89 (1): 40–2. doi:10.2307/4594975. JSTOR 4594975. PMC 1616242. PMID 4815040.