Laparoscopic Entry Techniques and Complications

Laparoscopic surgery depends critically on the initial creation of a safe access portal into the abdominal cavity. Entry techniques broadly include closed methods such as the Veress needle, open methods often referred to as the Hasson technique, and direct trocar insertion. Each approach carries risks of vascular injury, visceral perforation, extraperitoneal insufflation and failed entry. Patient factors such as obesity, prior abdominal surgery and anatomical variations further influence complication rates and technique selection. Innovations in device design—ranging from safety mechanisms to novel sensing technologies—seek to reduce overshooting, improve tactile feedback and allow real-time confirmation of peritoneal access. A clear understanding of the comparative safety profiles, the impact of surgical experience and the evolving toolset is essential to inform best practice and enhance patient outcomes on a global scale.

Research from Nature Portfolio

Recent studies have evaluated the reduction of Veress needle overshooting through integrated safety mechanisms that limit insertion depth and decouple driving force upon peritoneal entry. A large international survey of surgeons revealed widespread use of Veress needles despite recognised risks, with most practitioners expressing interest in advanced safety features. The study highlighted acceptable overshoot thresholds and varying preferences between closed and open entry methods depending on patient body mass. These findings underscore the ongoing need for device refinement and standardised training to mitigate entry-related injuries.

Research from all publishers

A meta-analysis focussed on obese patients assessed entry-related complications across a wide range of trocar designs, revealing that use of optical trocars tends to reduce visceral and vascular injury rates compared with non-optical devices, although heterogeneity remains high. Another recent investigation introduced a vibroacoustic guidance system for Veress needle insertion, demonstrating perfect detection of peritoneal puncture phases in a porcine model and offering a non-tip-based solution compatible with existing instruments. A comprehensive review of randomised trials compared Veress needle, direct trocar and open methods, concluding that direct trocar insertion may offer a lower overall risk of omental injury, failed entry and trocar-site infection, suggesting it as a preferred technique under certain conditions.

Laparoscopic Entry Techniques and Complications publication trend

The graph below shows the total number of articles in laparoscopic entry techniques and complications across all publications each year (not limited to Nature Index journals).

Technical terms

Veress needle: A spring-loaded hollow needle used to insufflate the peritoneal cavity with gas before laparoscopic access.

Trocar: A sharp-pointed instrument that creates and maintains a port through which laparoscopic instruments are introduced.

Pneumoperitoneum: The intentional insufflation of gas (usually carbon dioxide) into the abdominal cavity to create working space.

Optical trocar: A trocar equipped with a camera or lens system allowing direct visualisation of tissue layers during insertion.

Vibroacoustic guidance: A technique using sound and vibration sensors to detect tissue transitions and confirm entry into the peritoneal cavity.

References

1. The relevance of reducing Veress needle overshooting. Scientific Reports (2023).
2. Surgeons' requirements for a surgical support system to improve laparoscopic access. BMC Surgery (2022).
3. Primary entry trocar design and entry-related complications at laparoscopy in obese patients: meta-analysis. BJS Open (2023).
4. Enhancing Veress Needle Entry with Proximal Vibroacoustic Sensing for Automatic Identification of Peritoneum Puncture. Diagnostics (2024).
5. Laparoscopic entry techniques: Which should you prefer?. International Journal of Gynecology & Obstetrics (2022).