High-flow insufflation

Summary

Within the last decade, laparoscopy has developed from mainly a diagnostic technique to an extensive therapeutical procedure. This development has led, among others, to new or extended requirements for intra-abdominal insufflation. These requirements are outlined and analysed. A new generation insufflator, developed and manufactured by Karl Storz, is presented and evaluated. This instrument fulfills these requirements to a large extent by providing high-flow insufflation with up to 30 l/min average flow, further improved pressure control and optional gas heating to body temperature. Further, additional security functions are provided such as monitoring of the correct Veress needle placement, monitoring of the insufflation line status, active venting, good vision during smoke generation (CO₂ laser, electrocautery) by semi-continuous insufflation or display of selected functional parameters in the videoendoscopic image. Finally, an optional CO₂ gas humidification system is also provided.