| Pratt dilators | Cylindrical metal rods of graduated sizes used to dilate the cervical canal. (05 Mar 2000) |
|---|---|
| Hanks dilators | Uterine dilator's of solid metal construction. (05 Mar 2000) |
| Hegar's dilators | A series of cylindrical bougies of graduated sizes used to dilate the cervical canal. (05 Mar 2000) |