Novel characteristics of traction force in biliary self‐expandable metallic stents

Abstract

We measured traction force and traction momentum under simulated clinical conditions and demonstrated that strictures and the angular positioning of the stent influenced the traction force. Clinicians should be aware of the transition of the traction force and should schedule X-ray imaging during SEMS placement.

Antireflux metal stent for biliary obstruction: Any benefits?

“…Radial force, defined as expanding force in a radial direction, 103 has been associated with the risk of biliary SEMS migration 108 . Another consideration should be given to traction force, which is defined as the resistance force required to manipulate a stent delivery while releasing a metal stent 109,110 . In the setting of ARMSs, the attachment of the antireflux valve to the SEMS might increase the traction force because the part of the antireflux valve in the stent delivery is mechanically weaker compared to the adjacent portions and thus, tends to be bent during stent deployment.…”

Covered duodenal self‐expandable metal stents prolong biliary stent patency in double stenting: The largest series of bilioduodenal obstruction

“…To deploy an SEMS in the optimal position, the force pulling on the delivery catheter (i.e. traction force) should be considered . Because these high technical success rates have been reported from institutions of various volume centers, DS could be carried out by endoscopists trained to a certain degree.…”

“…traction force) should be considered. 38,39 Because these high technical success rates have been reported from institutions of various volume centers, DS could be carried out by endoscopists trained to a certain degree. As shown in Table 5, duodenal C-SEMS for DS has been used in a few series of small numbers of patients.…”

Prophylactic technique for preventing inward stent migration during placement of multiple plastic stents in a patient with surgically altered anatomy

“…Endoscopic biliary stenting is a widely accepted method to treat benign and malignant biliary strictures [1,2]. Multiple plastic stents are recommended for treating benign biliary strictures [3,4].…”