Ipas Denniston Dilators

For cervical dilation

Denniston dilators are designed with tapered ends to be more gentle than non-tapered ends. Fully autoclavable for multiple uses.

  • Sterilely packed, reusable up to 25 times (where regulations allow)

  • Set of 5 double-ended, tapered dilators: 5/6 mm, 7/8 mm, 9/10 mm, 11/12 mm, and 13/14 mm diameters

  • Approximately 29 cm (11.5 in) in length

  • Sterilized by steam autoclavable for 30 minutes at 250°F (121°C); or by standard cold methods, items must be fully immersed: Cidex® (2% glutaralydehyde solution) for 10 hours, Sporox®II for 6 hours.

  • High level disinfected in boiling water for 20 minutes; or by standard cold methods, items must be fully immersed: Cidex®(2% glutaralydehyde solution) for 20 minutes, 0.5% Chlorine solution for 20 minutes, Sporox®II for 30 minutes.

  • Latex-free, polypropylene plastic


  • Convenience – Uterine depth markers

  • Lightweight – Tapered, requires half the force of a non-tapered dilator

  • Safe – Packed sterile

Instruction for use:

  • Introduce a dilator that has a diameter smaller than the estimated gestation of the pregnancy gently through the cervical canal, rotating the dilator with gentle pressure.

  • Repeat this with progressively larger dilators until the internal cervical os has reached the appropriate for the patient’s gestation.

  • Remove dilator, insert cannula and start the aspiration procedure.

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