公开(公告)号：US20180272041A1

公开(公告)日：2018-09-27

申请号：US15921100

申请日：2018-03-14

Applicant: Gyrus ACMI, Inc. d/b/a Olympus Surgical Technologies America

Inventor： Hui Tang ,  Thomas J. Holman ,  Judy L. Walish

IPC: A61L31/04 ,  A61M27/00 ,  A61F2/04 ,  A61L31/02 ,  A61L31/12

CPC classification number: A61L31/041 ,  A61F2/04 ,  A61F2002/048 ,  A61F2240/001 ,  A61F2250/0018 ,  A61L31/028 ,  A61L31/128 ,  A61L31/129 ,  A61M27/008 ,  A61M2205/0216 ,  A61M2207/00 ,  C08L29/04

Abstract: Provided is a ureteral stent comprising certain amount of ethylene-vinyl acetate polymer and a certain amount of an additive selected from barium sulfate, bismuth subcarbonate, bismuth oxychloride, a polyolefin elastomer, a thermoplastics elastomer, and a mixture thereof. The provided stent may have multiple layers such as inner layer and outer layer with each layer having different elastic modulus. Also provided is a method of making the aforementioned ureteral stent and a method of using the ureteral stent in treating kidney or bladder related diseases.