20. Spermatorrhea ring – People in the Victorian era were made to believe that masturbation and nocturnal emissions could induce blindness, retardation and a host of other issues. Therefore, in a medical effort of prevention inventors devised contraptions that would discourage genital excitement. The Spermatorrhea Ring was one of such devises and comprised of a flexible metal band outlined by spikes.
19. Electro-retinogram – This apparatus was devised to measure the electric potential of the retina.
18. Cervical Dilator – This instrument was used to dilate the cervix during labor. However, such dilators became less popular because they often caused the cervix to tear.
17. Bullet Extractor – This piece of equipment was made to reach bullets embedded deeply in the patient’s body. It had a screw tip that was inserted in the wound and lengthened to pierce the bullet so that it could be pulled out.
16. Osteotome – Invented by Bernard Heine around 1830, this medical instrument was initially used in trepanning. The sharp spike was driven into the patient’s skull to hold the instrument in place, and then the doctor cranked the handle to turn the saw-toothed blade.