| Palliative treatment of malignant biliary strictures
| Olympus’ new X-Suit NIR® biliary uncovered metal stents achieve a high level of excellence in biliary stenting performance. Featuring an industry-leading NIRflex™ cell design, the stents offer exceptional conformability to the bile duct and excellent radial force. |
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The biliary metallic stent has three main features:
Unique cell geometry, called NIRflexTM Cell Design, using a shape-memory alloy
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The NIRflex™ Cell Design, with alternating narrow strut rings and wide strut rings, gives the stent superior radial force and high flexibility, which are key requirements for a metallic stent.
In addition, thanks to the peak-to-valley cell construction, the stent surface remains smooth without excessive flare-out even when deployed at a sharp bend, while the closed cell construction ensures that the struts are fully apposed to the bile duct wall.
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Moreover, there is virtually no foreshortening during the release of the X-Suit NIR® from the delivery catheter, and the stent can be placed precisely at the intended target position.
Superior radial support and high flexibility
The unique combination of rings with wide struts and rings with narrow struts allows for outstanding radial force resisting recoil, without compromising the superb longitudinal flexibility and conformability. This enables the stent to fit any bile duct, even if highly curved, without buckling, and reduces the risk of restenosis.
Outstanding insertion and stable deployment performance of stent delivery catheter
| The delivery catheter with its optimal tapering shape and hardness of the distal tip facilitates insertion into the papilla and passage through a stenosis in a bile duct. Also, the intermediate tube minimizes variations of the inner diameter even when the catheter is bent, allowing excellent deployment at a constant force from start to finish. |
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Technique for deploying a biliary metallic stent
| 1. Advance the delivery catheter over a guidewire through the working channel of the duodenoscope and into the papilla. Use fluoroscopic and endoscopic visualization to place the stent across the stenotic area. |
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2. The stent is deployed by manually operating the delivery catheter, while maintaining the position of the stent under fluoroscopic imagery.
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| During deployment of the stent |
After deployment of the stent |
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