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Optimal angle between instrument shaft and handle for laparoscopic bowel suturing
Shabeer Ahmed1, George B Hanna, Alfred Cuschieri
1Department of Surgery and Molecular Oncology, Ninewells Hospital and Medical School, University of Dundee, Dundee, Scotland.
Archives of Surgery (Chicago, Ill. : 1960)
|January 14, 2004
Summary
The optimal angle for laparoscopic bowel suturing is 40 degrees, enhancing suture accuracy and closure integrity. This angle provides superior leakage pressure and reduces suture placement errors compared to 0 or 80 degrees.
Area of Science:
- Surgical innovation
- Minimally invasive surgery
- Gastrointestinal surgery
Background:
- Endoscopic suturing is crucial for gastrointestinal surgery.
- Instrument handle-to-shaft angle impacts surgical performance.
- Optimizing angles can improve laparoscopic suturing outcomes.
Purpose of the Study:
- To determine the optimal handle-to-shaft angle for endoscopic suturing.
- To evaluate the effect of different angles on suture quality and integrity.
Main Methods:
- A rocker handle needle driver was used to test 0, 40, and 80-degree angles.
- The study involved closing 50-mm enterotomies in a porcine small-bowel model.
- Ten experienced laparoscopic surgeons participated in the study.
Main Results:
- The 40-degree angle demonstrated significantly higher leakage pressure (43.8 cm H2O) compared to 0 and 80 degrees.
- Suture error placement scores were significantly lower with the 40-degree angle (13.6).
- No significant difference in execution time was observed across angles.
Conclusions:
- A 40-degree handle-to-shaft angle optimizes laparoscopic bowel suturing.
- This angle improves suture placement accuracy and suture line integrity.
- The findings provide guidance for selecting optimal endoscopic suturing instruments.