| Pratt dilators | Cylindrical metal rods of graduated sizes used to dilate the cervical canal. (05 Mar 2000) |
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| Pratt | Joseph H., U.S. Physician, 1872-1956. See: Pratt's symptom. (05 Mar 2000) |
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| Pratt's symptom | Rigidity in the muscles of an injured limb, which precedes the occurrence of gangrene. (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) |