A novel, cost-effective lens irrigation system for rigid endoscopes in transnasal endoscopic surgery.

Background: In transnasal endoscopic surgical procedures, the lens of the endoscope often becomes fogged or smeared with mucus or blood. The surgeon has to clean the lens and reintroduce the endoscope multiple times during the surgery, making it a tiring process. Methods: This paper describes an innovative lens irrigation system comprising a modified 16 Fr Foley catheter, a 20 cc or 50 cc syringe filled with warm normal saline (0.9 per cent), and a commercially available intravenous infusion set. The rigid endoscope is introduced into the catheter through the urine draining port. When the lens gets smudged with blood or mucus, the irrigating saline in the syringe is forced through the inflating port. Results: A clear vision was restored immediately on flushing the syringe. The system did not compromise the operative space or hinder manoeuvrability. Conclusion: This cost-effective, innovative lens irrigation system saves the time spent in cleaning the lens and enhances operational efficiency, especially in a low-income setting. [ABSTRACT FROM AUTHOR]