Stem pessaries, c 1930.
Image number: 10284378
Stem pessaries are intra-uterine devices (IUDs) consisting of a rubber, metal, or glass stem attached to a cup or button to hold the stem upright and prevent it from becoming lost in the uterus. An IUD works after conception by denying a newly fertilized embryo the ability to implant and grow in the lining of the uterus. The IUD is the most inexpensive long-term reversible method of contraception available. Smaller, plastic IUDs are still used today.
- Image number:
- 10284378
- Credit:
- Science Museum/Science & Society Picture Library
- Date taken:
- 29 October 2003 13:23
- Image rights:
- Science Museum
