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J Plast Surg Hand Surg. 2013 Jun;47(3):175-9. doi: 10.3109/2000656X.2012.747961.

Study of continuous irrigation negative-pressure treatment using an original ulceration model.

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  • 1Department of Plastic and Reconstructive Surgery, Fukushima Medical University, Fukushima, Japan.


A continuous irrigation with intermittent aspiration (CIIA) method has previously been developed in the treatment of infected expander sites. For the purpose of treatment of infected wounds, a new intermittent negative pressure irrigation treatment (INPIT) has been developed that is a combination of CIIA with topical negative-pressure therapy. This study aims to investigate the efficacy of INPIT. The efficacy of irrigation was investigated by changing the conditions including the location and the number of irrigation tubes, flow volume, and the timetable of negative-pressure application using original ulcer models. Although the presence of side holes and increase in the number of tubes or flow volume improved the irrigation efficacy, non-washed-out areas remained. On the other hand, INPIT allowed more uniform and wide area washing even at low flow volume. The results suggest that INPIT is superior to general conventional continuous irrigation treatment in irrigation efficiency.

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