Vaginal vault closure after laparoscopic or robotic hysterectomy may be associated with postoperative complications such as vaginal cuff dehiscence, infection, and bleeding. The optimal suture material and technique for laparoscopic colporrhaphy, particularly in patients undergoing surgery for gynecologic malignancies, remain controversial.

The BI-SURE trial is a multicenter, randomized controlled study designed to compare double-layer self-locking sutures versus double-layer traditional Polyglactin 910 sutures for laparoscopic vaginal vault closure after hysterectomy. The study aims to evaluate postoperative effectiveness and safety within three months after surgery.

Laparoscopic and robotic hysterectomy represent standard surgical approaches for the treatment of gynecologic malignancies but are associated with a higher risk of vaginal vault complications compared with open or vaginal surgery. Although uncommon, postoperative complications such as vaginal cuff dehiscence, infection, and bleeding may lead to significant morbidity and require additional medical or surgical interventions.

Vaginal vault closure can be performed using different suturing techniques and materials. Traditional braided sutures, such as Polyglactin 910, are widely used in clinical practice, while self-locking (barbed) sutures have been introduced to facilitate laparoscopic suturing by maintaining tissue approximation without the need for knots. Evidence comparing these sutures is limited, particularly for double-layer closure techniques and in patients treated for gynecologic malignancies.

The BI-SURE trial is a multicenter, pragmatic, randomized controlled trial designed to compare double-layer self-locking sutures versus double-layer traditional Polyglactin 910 sutures for laparoscopic vaginal vault closure following hysterectomy for malignant gynecologic disease. Eligible patients will be randomized in a 1:1 ratio. Postoperative outcomes will be assessed up to three months after surgery, including vaginal cuff-related complications and postoperative pain.

Inclusion Criteria:

• Patients undergoing laparoscopic or robotically assisted hysterectomy for gynecologic malignant disease
• Age ≥ 18 years
• Ability to provide written informed consent

Exclusion Criteria:

• Laparotomic or vaginal hysterectomy
• Contraindication to laparoscopic vaginal vault closure

Individual participant data (IPD) will not be shared because the study is conducted within a hospital-based academic setting and no data repository has been designated for public data release. Data will be stored securely at the sponsor institution and will be accessible only to authorized study personnel in compliance with applicable privacy regulations.