Related Experiment Video
Updated: Mar 5, 2026

06:41
A Novel Arthroscopic Medial Knot-Tying Suture-Bridge Repair with Rip-Stop Technique for Rotator Cuff Tears
Published on: January 13, 2026
212
Figure 4 Knot: Simple Tying Technique for Robotic and Endoscopic Sutures
Norihiko Ishikawa1, Go Watanabe
1From the Department of Cardiovascular Surgery, NewHeart Watanabe Institute, Tokyo, Japan.
Innovations (Philadelphia, Pa.)
|March 23, 2017
Summary
A novel "Figure 4" endoscopic suturing technique ensures secure knots that never untie, simplifying surgical procedures. This method reduces the need for additional stitches, improving efficiency in endoscopic and laparoscopic surgery.
Area of Science:
- Minimally Invasive Surgery
- Surgical Techniques
- Gastroenterology
Background:
- Existing endoscopic suturing methods often result in incomplete knots, necessitating additional stitches and potentially compromising surgical outcomes.
- The reliability of knot tying remains a significant challenge in endoscopic procedures, impacting overall surgical efficiency and safety.
Purpose of the Study:
- To introduce and describe the novel "Figure 4" endoscopic suturing technique.
- To demonstrate the simplicity and effectiveness of the "Figure 4" technique in creating secure, untieable knots during endoscopic procedures.
Main Methods:
- Development of the "Figure 4" suturing technique, characterized by a knot that slides easily to the target suture point.
- Application of the technique by pulling the suture tail to securely tie the knot, ensuring it will not come untied.
Main Results:
- The "Figure 4" technique allows for easy knot sliding and secure tying, preventing knots from coming untied.
- The technique is simple to learn and execute, reducing the need for supplementary stitches.
Conclusions:
- The "Figure 4" technique offers a significant improvement over existing endoscopic suturing methods by ensuring knot security.
- This technique is versatile and applicable to various endoscopic and conventional laparoscopic surgical procedures, enhancing their safety and efficiency.

