A group of women rated Voluntary birth control as their most appreciated technology of the 20th century. 100 million women were described as being on Oral contraceptives during 2011-2012 AD. That's marvelous yet there are about 1.7 billion women or girls of fertile age on earth that year. So just 1/16
of them are using the pill
The Nuvaring, introduced 2001, is about to go public domain thus could cost less than 10c each to make as a generic. The vinyl like polymer along with less than a twentieth of a gram of hormones has similarities to cheap polymer jewelry
A year functioning Nuvaring would diffuse 7300 ug/year of ethynyl estradiol, 7 milligrams as well as 43 milligrams Etonogestrel As the Nuvaring masses perhaps 10 grams each full year of hormonal availability represents less than 1/200th (ish) the actual mass of the plastic. I say Ish as of course only some of the chemicals diffuse. Perhaps its 1/40th of the mass. I think this is just a matter of choosing a different polymer to make it out of.
not an invention right
aha theres more
a multiyear functional nuvaring could be created if the annulus had gentle swells each of which had a polymer capsule similar to those glow tube party favors. (link) The core of the nuvaring would have a diffusion thread to carry the renewed hormonal fluid around the perimeter. The woman or girl would just squeeze a new capsule each birthday or on a holiday.
Theres a video
about the only thing I have to say about this video is I also made a Chinese version so maybe they will actually make the thing. a billion dimes is still 100 million US$.
Notably the vinyl like year nuvaring compares to cheap polymer jewelry thus might actually be less than a 10c a year. That compares very favorably with the pill at 1c each $3.65 or 35 times more than 10c Nuvaring to provide a year of benefit.
Supposedly there were 2 billion people living off $2.00 a day during 2011 AD. the year nuvaring at 10c to get a years contraception is super affordable
Now along with the glow tube version at the video I also suggested alternate ingredients like spermidine that actually reduce cancer as well as STD transmission thus possibly creating a more medically favored thing than the birth control pill which is thought to have permissable risks, except among tobacco users. putting anticancer drugs at the year nuvaring thus gives it a mass OTC advantage over the birth control pill while also removing the professional screening part.