Inserting a plastic stent into a bent metal stent can restore bile flow.

Doctors often treat blocked bile ducts caused by cancer using covered metal mesh tubes called stents. These tubes hold the duct open so digestive fluids can drain. Sometimes, a stent bends too sharply inside the body. This severe bend can cause the stent to stop working properly. To fix this, researchers tested a new technique called the long-anchoring stent method. They placed a long plastic tube with curled ends inside the bent metal stent. This inner plastic tube acts like a splint. It physically straightens out the bent metal stent, which reopens the pathway and lets bile flow freely again. The researchers found that this method worked for all treated patients. Adding the inner tube significantly straightened the metal stents. For patients whose stents had blocked early, it kept the ducts clear for much longer. It was safe and caused no severe side effects.

Why it matters

Patients with bile duct cancer often receive metal stents to keep the bile flowing. But these stents can bend and block within months. This study shows that inserting a plastic stent inside can straighten the metal one and restore drainage, offering a simple rescue without major surgery.

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