Novel technique of abdominal wall nerve block for laparoscopic colostomy: Rectus sheath block with transperitoneal approach

Figure 1 Intraoperative photographs. A: The Peti-needle™ inserted via the naval port (5 mm); B: Delivered to the peritoneum; C: The anesthetic agent was then injected through the Peti-needle™ by the transperitoneal approach under laparoscopic visualization.

Figure 2 Ultrasound images. A: The muscle layers; B: The Peti-needle™ positioned below the peritoneum, the notch was made by the needle tip (yellow arrow) before the needle was inserted via the peritoneum; C: Local analgesic was then administered into the correct layer. R: Rectus muscle; IP: Intraperitoneal space; SC: Subcutaneous tissue; I: Injectate.