Which needle is used to instill CO2 gas during surgical procedures?

The Veress needle is specifically designed for the purpose of creating a pneumoperitoneum by instilling carbon dioxide gas during laparoscopic surgeries. This needle features a spring-loaded mechanism that allows it to safely penetrate the abdominal wall and access the peritoneal cavity without causing trauma to surrounding tissues. Once the needle is securely in place, CO2 can be insufflated, creating the necessary space for surgical manipulation and visualization.

While other needles mentioned may serve various purposes in medical settings, they do not have the specific design and intended use for insufflating gas into the peritoneal cavity like the Veress needle does. For instance, a catheter needle is generally utilized for accessing veins or for other forms of access but does not function in the same way as the Veress needle during laparoscopy. Understanding the unique role of the Veress needle in creating an effective working space for laparoscopic procedures is crucial for surgical practice.