Historical information
The wings of the pessary are controlled by two small hinges and the screw at the base of the metal stem. These wings can be opened or closed by turning the screw clockwise or anticlockwise.
Physical description
Zwanke's intrauterine stem pessary. Consists of two black vulcanite wings, a stem, and a screw. Stem is made up of three curved metal prongs, which fit into a small metal cup at the base. Screw is made of vulcanite with a small metal stud on the underside.
Subjects
References
- Science Museum Group, 'Zwanke's stem pessary' Similar item.
- George Tiemann & Co., Surgical Instruments, p. 496.
