Clinical Study for Energy Based Devices in Open Gastrectomy for Gastric Cancer

Inclusion Criteria: * Pathologically proven primary gastric adenocarcinoma * Patients who may undergo distal gastrectomy * Patients who qualified for open gastrectomy for gastric cancer stage T1-3, M0 according to the 7th International Union Against Cancer classification * 20 ≤ age ≤ 75 * Patients with informed consent Exclusion Criteria: 1. Previous abdominal operation Hx. 2. Patients who are impossible to undergo Billroth-I reconstruction because of duodenal invasion caused by duodenal ulcers or gastric cancer 3. Patients who have CT defined ascites prior to operation 4. Patients with liver dysfunction defined as T.Bil\>1.2 or albumin\<3.0 5. Patients with heart disease such as uncontrolled hypertension, history of angina or coronary artery disease, history of cardiomyopathy, Ventricular Ejection Fraction \<50% measured by echocardiography 6. Patients with renal dysfunction defined as creatinine\>1.4 mg/dL or Blood Urea Nitrogen\>26mg/dL 7. Patients with severe pulmonary dysfunction defined as Forced Expiratory Volume at 1 second\<1.0 L in Pulmonary Function Test 8. Patients with abnormal coagulation (PT International Normalized Ratio \>1.2 or activated Partial Thromboplastin Time\>45 sec) 9. Patients with uncontrolled diabetes 10. Treatment with aspirin or antithrombotic agents within 7days before operation 11. Treatment with anticoagulant drug 12. History of preoperative stress dose steroid treatment 13. Patients who the investigators believe will be ineligible for participation in the clinical trial