Surg Endosc. 2017 Aug;31(8):3159-3167. doi: 10.1007/s00464-016-5341-8. Epub 2016 Nov 18.

A prospective randomized study for efficacy of an uncovered double bare metal stent compared to a single bare metal stent in malignant biliary obstruction.

Lee HJ1Chung MJ1Park JY1Park SW1Nam CM2Song SY1Bang S3.

 

When it comes to choosing fully covered stents and bare stents, it is not easy to catch two rabbits. Even though bare stents are less likely to be migrated and not to block drainage of bile compared to fully covered stents, conventionally, its patency is shorter than covered stents due to tumor ingrowth.

To overcome this shortcoming of a conventional bare stent, S&G biotech has made the best effort to develop an innovative biliary stent. Its outcome is EGIS Double Bare Stent, functioning as a covered stent. Conventional bare stents have the structure of wire-mesh so tumor ingrowth is unavoidable as times goes. However, EGIS Double Bare Stent has cross- overlapping two stents so that it has smaller cell sizes (2mm) (Chang-II Kwon, 2013, Choice of stents for distal Biliary Obstruction, Korean society of Gastrointestinal society, P 299)

According to the recent literature review, the mean period of patency in biliary stents was 146.4 ± 21.2 days. Cumulative secondary patency rates after one, three, and six months were 81.4%, 47.3%, and 30.4%, respectively. (Andrius et at. Pol J Radiol 2017;82:431).

The patency of EGIS Double Bare Stent was 212 days, outstanding results.

For more details, please look at the following link:

A prospective randomized study for efficacy of an uncovered double bare metal stent compared to a single bare metal stent in malignant biliary obstruction.