Participants included in this study will first swallow a patency capsule and then undergo an abdominal X-ray scan within 30 hours after swallowing the capsule to confirm weather the capsule is still in the body.
Patients with suspected or known intestinal stricture (with medical history records, physical examination records, and imaging evidence within the last 6 months.
Patients suffering from Crohn's Disease
Patients with long-term use of non-steroidal anti-inflammatory drugs.
Patients with abdominal symptoms related to intestinal stricture.
Patients with esophageal obstruction or swallowing disorder diseases.
Patients who are ineligible for surgery or refuse to undergo any abdominal surgery.
Patients with known allergies or other contraindications or intolerance to the medications used in this study.
Patients with pacemakers or other implanted electronic devices such as cochlear implants, magnetic metal drug infusion pumps, neurostimulators.