A new polyurethane anal plug in the treatment of incontinence after anal atresia repair

Eur J Pediatr Surg. 2000 Jun;10(3):186-90. doi: 10.1055/s-2008-1072354.


38 totally or partially incontinent patients following imperforate anus repair (age 6-15 years) tested a new polyurethane (PU) anal plug against another, widely used anal plug (PVA) in a randomized crossover trial. Plugs were tested 3 weeks each, data concerning bowel habits, handling and plug-related problems were collected by questionnaire before trial, at time of product change and after trial.

Results: 15 of 38 patients did not complete the protocol, among them 6 with anal canal diameters too small for the smallest plug. During plug use, patients experienced enhanced awareness of repletion and urge. Stool consistence did not change in 82% of patients. There were no changes in children constipated prior to study (n = 8/23). 12,123 children were absolutely clean during use of either plug. 15 patients (68%) using the PU plug and 10 (45%) using the PVA plug felt secure from soiling during plug use. 74% of patients preferred the PU plug. Painful plug insertion, a feeling of pressure inside the anal canal and painful plug removal were reported with both plugs, but were less frequent with the PU plug.

Conclusion: Anal plugs, regardless of their make, offer absolute cleanliness for periods of several hours to 66% of our incontinent patients. The PU plug (Conveen, Coloplast) is preferred by the patients and offers greater security than the PVA plug.

Publication types

  • Clinical Trial
  • Randomized Controlled Trial

MeSH terms

  • Adolescent
  • Anus, Imperforate / surgery*
  • Bioprosthesis*
  • Child
  • Cross-Over Studies
  • Fecal Incontinence / etiology
  • Fecal Incontinence / rehabilitation*
  • Humans
  • Patient Satisfaction
  • Polyurethanes / therapeutic use
  • Postoperative Complications / rehabilitation*
  • Prospective Studies
  • Statistics, Nonparametric


  • Polyurethanes