Square stent: A new self-expandable endoluminal device and its applications

Dusan Pavcnik, Barry Uchida, Hans Timmermans, Frederick S. Keller, Josef Rösch

Research output: Contribution to journalReview articlepeer-review

28 Scopus citations


The square stent is a new, simply constructed, self-expanding device that has recently been described. Compared with other stents, the square stent has a minimal amount of metal and thus requires a smaller-diameter catheter for introduction. Despite the small amount of metal present, the square stent has adequate expansile force. We have been evaluating the square stent for various interventional applications. In addition to the basic square stent, combinations of square stents and coverings for square stents were developed and evaluated to expand its uses and indications. One of the coverings tested is a new biomaterial: small intestinal submucosa (SIS). This paper will discuss the various applications of the square stent, which include a retrievable inferior vena cava filter, vascular occluder, graft adapter, and venous and aortic valves. In addition, we will review the important properties of SIS as a covering for the square stent.

Original languageEnglish (US)
Pages (from-to)207-217
Number of pages11
JournalCardiovascular and interventional radiology
Issue number4
StatePublished - Oct 31 2001


  • Aortic valve
  • Biomaterial
  • Embolism, pulmonary
  • Embolization
  • Endovascular stent graft
  • Filters, interventional procedures
  • Stents and prostheses
  • Venous valve

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Cardiology and Cardiovascular Medicine


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