Continuing the cultural belief that menstruation is a "problem" to be remedied, the menstrual blood extractor is envisioned as a home-based machine used to suck the blood from the uterus.
The inventor claims it can shorten the period to one day. The machine is never known to be widely manufactured.
A similar device, the Del-Em, was invented by members of a feminist self-help group in 1971 to be used for home abortions in the pre-Roe v. Wade era.