The injection of carbon dioxid gas under pressure through the uterus to determine the patency of the fallopian tubes has been employed rather extensively in the gynecologic clinic of the University of Michigan for the last three years. During this period the Rubin test, with some modifications, has been used, since it was thought to be the best method of controlling the flow of gas, regulating its pressure and estimating the amount of gas passed through the uterus and fallopian tubes into the peritoneal cavity.
Not only was the Rubin technic employed to determine the patency of the tubes, but it was the method of choice for the introduction of sufficient gas into the peritoneal cavity to allow the taking of satisfactory roentgenograms whereby pathologic changes in the pelvis could be carefully studied. If, under suitable pressure and after repeated attempts, the gas failed to pass by the transuterine route,
PETERSON R, CRON RS. THERAPEUTIC VALUE OF TRANSUTERINE GAS INFLATION. JAMA. 1923;81(12):980-984. doi:10.1001/jama.1923.02650120012004