Discover a new approach to induction of labour

>90% first time ripening success

Safe and gentle

12 hour dilation

Excellent patient comfort

Cost effective

      New Clinical Data

✔ High efficacy

✔ One round of ripening sufficient in >90% of patients1,2

✔ Licensed for all inductions including VBACs

✔ Safe and predictable 12 hour mechanism

✔ Non-pharmaceutical, non-prescription and CTG monitoring not mandatory

✔ Patented hydrogel osmotic dilator made of Aquacryl®

✔ No adverse outcomes including infections reported

✔ Reduced risk of hyperstimulation


Enquire about Dilapan-S® here

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What is Dilapan-S®?

Dilapan-S® is a hygroscopic osmotic dilator made from patented Aquacryl® hydrogel which guarantees predictable action. 3-5 Dilapan-S® rods are inserted in the cervical canal for 12 hours to safely and sufficiently dilate the cervix and increase the Bishop Score prior to induction of labour. Dilapan-S® has been shown to have >90% success rate1 and 70-75% vaginal delivery rate2,3 and excellent patient satisfaction1,6.

Mode of action

Dilapan-S® does not contain any pharmacological substances. The hydrogel rods absorb fluid from the cervical canal tissue, gradually increasing in size over 12 hours.  Typically, 3-4 rods are placed into the cervix for IOL.

The solely mechanical dilation allows safe, predictable and efficient preparation of the cervix prior to labour, with low risk of hyperstimulation and fetal distress.


Expanding rods exert a controlled pressure on the cervical wall to help dilate the cervix


Partial and reversible osmotic dehydration of cervical cells dilates and softens the canal


Promotion of endogenous prostaglandins, causing collagen degradation and tissue restructuring

Prolonged dilation

As Dilapan-S® works by osmosis, it temporarily dehydrates the cervix, resulting in the cervix remaining dilated for a prolonged period after removal (minimum 12-24 hours). This is important for ward management and situations where there is a delay until amniotomy.

Dilapan-S® rods gradually increase in size to gently dilate the cervix
Dilapan-S® rods gradually increase in size to gently dilate the cervix

Clinical Benefits

  • Cervical ripening success rate in first round: 89.4%1
  • High vaginal delivery rate2,3: 70% – 75%
  • No uterine hyperstimulation or fetal distress during cervical ripening2-5
  • No infection complications reported
  • OXY administration is required in c80%
Excellent rate of patient satisfaction6


  • 94% evaluated Dilapan-S insertion as fully acceptable
  • 90% stated they could relax during cervical ripening period
  • 79% stated they could sleep during cervical ripening period
  • Significantly better patient satisfaction compared to other mechanical methods, shown in a recent RCT1

Both Midwives and Doctors insert Dilapan

Dilapan-S rods can be inserted with the patient on her back with her legs folded upwards, lithotomy not mandatory.

As Dilapan works by osmosis, the temporarily dehydrated cervical tissue remains dilated even after removal

CTG monitoring not mandatory

Doesn’t have to be prescribed

Once rods are fully inserted, no risk of them falling out before removal

Reduced risk of hyperstimulation

Bespoke care for each woman, control over number of rods

12 hour cervical ripening period – shorter induction

Patients can mobilise straight away

Cost Effectiveness

  • Dilapan-S® is a cost-effective option for inductions.
  • Based on list prices, Dilapan-S® has been a more cost effective option for the majority of NHS hospitals that have switched to using Dilapan-S® in their inductions.
  • Dilapan-S® offers large cost savings due to reduced repeat rounds, high efficacy and safety, reduced CTG monitoring, and gives the option for outpatient inductions which reduces length of hospital stay.
Dilapan-S® is also used for outpatient inductions at NHS hospitals
Stephanie Allen The Dilapan Midwife

The Dilapan-S® Midwife- Stephanie Allen

We are excited to have Steph as our new Product Specialist Midwife. She is here to help maternity units with the introduction and optimisation of Dilapan-S® for Induction of Labour. Steph has been a midwife for 10 years, with a broad experience as an induction midwife on busy wards. Steph is excited to help continue innovating women’s care, improve the IOL process and patient experiences across the NHS. 

See her blog and videos for essential skills, tips and tricks with Dilapan-S®.

“The fact that Stephanie is a registered midwife was highly beneficial as she was able to answer the questions and provide clinical explanations relevant to practice, understanding the demands associated with inductions and general midwifery practice… Overall very informative and interesting training session – thank you Stephanie.”  Training feedback, NHS hospital, 2020

Other uses of Dilapan-S®

Dilapan-S® also has a range of uses in gynaecology where cervical dilation is required. For example, osmotic cervical dilation is recommended for surgical termination of pregnancy (between 14+0 and 23+6 weeks) in the NICE Guidelines (NG140). Cervical preparation with Dilapan-S® also enables easier embryo transfer during assisted reproduction and facilitates other procedures (e.g, hysteroscopy) which require access to the intrauterine cavity for insertion and removal of devices. Dilapan-S® is available in a range of sizes for different procedures.

 Please find more info HERE.

Product information 

  • Dilapan-S® is supplied in boxes of 25 rods.
  • Product code DS000-4X55 for IOL.
  • Dilapan-S® rods are supplied sterile and individually packaged.
  • The device is manufactured in an ISO 13485 Certified facility and is CE Certified under the Medical Device Directive (93/42/EEC). Dilapan is also FDA approved.