The purpose of this observational study is to evaluate the safety and performance of the Endoscopic Linear Cutter Stapler and reloads from Fengh Medical used in laparoscopic Roux-en-Y gastric bypass surgery to create anastomoses. The goal of the study will be achieved by assessing the device performance and reporting of peri- and postoperative complications in a prospectively maintained database.

Inclusion Criteria:

• Age at study entry is at least 18 years.
• Patient must sign and date the informed consent form prior to the index-procedure.
• Patient has a BMI ≥ 35 kg/m with one or more related co-morbidity.
• Patient has a BMI ≥ 40 kg/m.

Exclusion Criteria:

• Patient is pregnant.
• History of bariatric surgery.
• Patient is known to be, or suspected of being unable to comply with the study protocol or proposed follow-up visits.

Obese patients eligible for laparoscopic Roux-en-Y gastric bypass surgery.