Veress needle
Pronunciation: VAIR-ess
Spring-loaded needle with safety mechanism used to establish pneumoperitoneum for laparoscopic surgery while minimizing risk of organ injury.
Full Definition
The Veress needle is a specialized instrument used to create pneumoperitoneum for laparoscopic surgery. Named after Hungarian surgeon János Veress, this needle features a spring-loaded blunt inner stylet that retracts during insertion through tissue layers but springs forward upon entering the peritoneal cavity, reducing the risk of injury to intra-abdominal organs. The needle is typically inserted through the umbilicus, and proper placement is confirmed through various tests including the saline drop test, aspiration test, and pressure monitoring during gas insufflation. While considered safer than blind trocar insertion, the technique requires proper training and careful attention to insertion depth and angle.
Usage
Usage note: Capitalize as it is a proper noun named after the inventor. Describe placement confirmation steps in operative reports.
In Context
- "The Veress needle was inserted at the umbilicus with confirmation of proper placement." — operative report
- "CO2 insufflation was initiated through the Veress needle after negative aspiration." — laparoscopic technique description