OverStitch™ Endoscopic Suturing System The OverStitch™ Endoscopic Suturing System enables advanced endoscopic surgery by allowing physicians to place full-thickness sutures through a flexible endoscope. With this new technology, you can provide secure approximation of tissue endoscopically. The OverStitch system is enabling a wide range of less invasive solutions for your patients, including revisional bariatric procedures and repair of GI defects.