Testing retractable tip of disposable Veress needl
A. Blunt tip retracts as it contacts resistance (e.g., a knife handle). B. When the needle is pulled away from the point of resistance, the blunt tip springs forward and protrudes in front of the sharp edge of the needle.
Insufflator testing.
With the insufflation tubing kinked, the intraabdominal pressure should rapidly rise (e.g., 30mmHg), thereby exceeding the preset 15mmHg pressure set point. The flow of CO2 should immediately cease (0 L/min) and an alarm should sound.
Insufflator testing
With insufflator tubing open (i.e., not connected to Veress needle) and flow rate set at 6 L/min, the intra-abdominal pressure reading obtained through the open insufflation line should be 0mmHg