Performance Evaluation of the NaviCam SB Capsule Endoscope System for the Diagnosis of Small Bowel Diseases

Inclusion Criteria: 1. Adult patients (≥18 years old) who have symptoms of small bowel disease or suspected GI bleeding; 2. Those need capsule endoscopy because the recurring GI symptoms cannot be explained by other imaging methods; 3. Those can understand and accept this study protocol and voluntarily sign an informed consent. Exclusion Criteria: 1. Patient is expected to undergo MRI examination within 7 days after ingestion of the capsule; 2. Patient with known gastrointestinal motility disorders; 3. Patient with known or suspected gastrointestinal obstruction, stenosis or fistula; 4. Patient with known or suspected delayed gastric emptying; 5. Patient suffers from any condition, such as swallowing problems, which precludes compliance with study and/or device instructions; 6. Patient has any allergy or other known contraindication or intolerance to the medications used in the study; 7. Patient has any condition, which precludes compliance with study and/or device instructions; 8. Women who are either pregnant or nursing at the time of screening; 9. Concurrent participation in another clinical trial using any investigational drug or device; 10. Patient suffers from a life-threatening condition; 11. Patients with history or clinical evidence of renal disease and/or previous clinically significant laboratory abnormalities of renal function parameters; 12. Patients with pace-maker or implantable cardioverter other implantable electronic medical device; 13. Patient with an easily magnetized metal part; 14. Patient requires endoscopic placement of the capsule; 15. Others considered by the investigator not suitable for this study.