ERBD SHORT SHEATH TUBE PUSHING SYSTEM FOR PLACING METAL STENT INTO BILIARY TRACT VIA ENDOSCOPE

摘要

The present invention provides a sheath delivery system for endoscopic retrograde biliary drainage metal stents, the delivery system comprising a delivery device and a fixation device, wherein the delivery device delivers the stent to the biliary site via the endoscope, Fix the device to the endoscopic biopsy location. The transfer device includes a head, a core, a sub tube, a main tube, a sliding rod, an end, a wire space, an injection tube, a bracket, a stent, a sheath, a cable and an H ring, , The length of the sheath is greater than the length of the bracket and smaller than the length of the sub-tube, the H ring is fitted on the outer circumference of the sliding rod, and the H ring and sheath are connected through the cable. During the operation, the main tube part of the transfer device is fixed to the endoscopic biopsy device through the failure device, and the operator pulls the H ring with one hand and moves it in the direction of the sliding rod so that the cable can move the sheath and fit the sub tube. To expand the stent.