Continuous carbon dioxide flow via a modified 4-way stopcock to prevent hemostatic spray catheter clogging.

BACKGROUND AND AIMS: Clogging of the Hemospray catheter (TC-325 Hemospray; Cook Medical, Bloomington, Ind, USA) is a common technical challenge, particularly when the tip becomes wet during endoscopic procedures, leading to interruption of hemostasis. A prior solution described a modified airflow connection to prevent occlusion. We developed a simplified, reproducible method using commercially available carbon dioxide (CO2) insufflation devices and tubing, connected via a 4-way stopcock to provide continuous CO2 flow through the Hemospray catheter.

METHODS

The assembly incorporated commercially available CO2 insufflation devices and tubing, a 4-way stopcock, and the standard Hemospray system. Continuous CO2 flow was maintained throughout the procedure to displace moisture and preserve lumen patency.

RESULTS

Continuous CO2 flow effectively prevented catheter occlusion and maintained uninterrupted spray function even after fluid contact. The demonstration confirmed consistent delivery without clogging.

CONCLUSIONS

This 4-way stopcock enables continuous CO2 flow through the Hemospray catheter, preventing clogging in a simple, low-cost, and reproducible manner. The set-up is readily adaptable to existing endoscopic systems and may enhance procedural efficiency and device reliability.