Endoscopy Supplies

Niti-S™ S-Type Biliary Stent (Covered)

Category: Biliary Stents

S-Type Biliary Stent (Covered)

The Niti-S & ComVi Biliary Stent consists of the implantable metallic stent and introducer system. The stent is made of Nitinol wire. It is a flexible, fine mesh tubular prosthesis which has radiopaque markers on each end and at the center. The Stent is loaded in introducer system and upon deployment the stent imparts an outward radial force on the luminal surface of the bile duct to establish patency. Niti-S Full Covered Biliary Stents used in benign stricture can be removed; (see Warnings). Full Covered Biliary Stents can be repositioned after deployment (see Warnings).

Product Description

Principle of Operation

The outer sheath is pulledback by immobilizing the hub in one hand, grasping the Y-connector with the other hand, and gently sliding the Y-connector along the pusher towards the hub. Retraction of the outer sheath releases the stent.

Indication for Use

The Niti-S Fully Covered Biliary Stent is intended for maintaining biliary luminal patency in malignant and/or benign strictures.


  • Benign and malignant biliary strictures
  • Fixed cell with braided construction
    Flexible and resistant to fracture
  • Atraumatic ends
    Less hyperplasia at the edges
  • Silicone covering on both inner and outer surface
    Prevent the risk of tumor ingrowth
    Help smooth bile flow
  • Retrieval string facilitates safe and smooth removal
  • Radiopaque marker: 3 (three) at both ends and 2 (two) in the middle

Clinical Reference

    • Placement of a 6 mm, fully covered metal stent for main pancreatic head duct stricture due to chronic pancreatitis: a pilot study (with video)
      by Takeshi Ogura et al [Therap Adv Gastroenterol. 2016 Sep;9(5):722-8]
    • Intraperitoneal rendezvous: a mini-invasive biliary reconstruction
      by Gabriele Curcio, MD et al [Gastrointest Endosc. 2016 Jul;84(1):184-5]
    • Chronic pancreatic pain successfully treated by endoscopic ultrasound-guided pancreaticogastrostomy using fully covered self-expandable metallic stent
      by Arunchai Chang et al [World J Clin Cases. 2016 Apr 16;4(4):112-7]
    • Endoscopic ultrasound-guided hepaticogastrostomy using a 6-F cystotome and 12-cm covered metal stent
      by Mandai Koichiro et al [Endosc Int Open. 2016 Mar;4(3):E287-91]
    • Clinical Outcome of Endoscopic Ultrasound-Guided Liver Abscess Drainage Using Self-Expandable Covered Metallic Stent (with Video)
      by Takeshi Ogura et al [Dig Dis Sci. 2016 Jan;61(1):303-8]
    • Fully covered self-expandable metal stent treatment of spurting bleeding into the biliary tract after endoscopic ultrasound-guided fine-needle aspiration of a solid lesion of the pancreatic head
      by Luca Barresi et al [Endoscopy. 2015;47 Suppl 1 UCTN:E87-8]
    • Polyurethane-Covered Self-Expandable Nitinol Stent for Malignant Biliary Obstruction: Preliminary Results
      by Young-Min Han et al [Cardiovasc Intervent Radiol (2002) 25:381–387]

Key Resources

Product Information


In the ever-evolving landscape of medical technology, a groundbreaking innovation has emerged, promising renewed hope for individuals grappling with biliary disorders. Enter the Gastroenterology Niti-S™ Self-Expandable Metal S-Type Biliary Stent (Covered), a marvel of modern gastroenterology.

This remarkable device is designed to alleviate the suffering of patients with biliary strictures and other related conditions. What sets it apart is its “covered” feature, which means it is coated with a special membrane that prevents tissue ingrowth and promotes smoother stent removal when needed. This technology not only enhances patient comfort but also reduces the risk of complications.

The Niti-S™ stent is a testament to the progress of minimally invasive medicine. Its self-expandable design simplifies placement, allowing for quicker procedures and shorter hospital stays. Patients can look forward to a faster recovery and improved quality of life.

In the realm of gastroenterology, the Gastroenterology Niti-S™ Self-Expandable Metal S-Type Biliary Stent (Covered) is a true game-changer, offering renewed hope and comfort to those in need. This medical marvel exemplifies how innovation continues to transform healthcare for the better.