Office of Technology Transfer – University of Michigan

An Ostial Stenting System

Technology #3602

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Hitinder S. Gurm
Managed By
Janani Ramaswamy
Licensing Specialist, Medical Deviceses 734-763-9081
Patent Protection
US Patent Pending
US Patent Pending


While use of stents has revolutionized the field of vascular interventions, significant challenges remain. For example, in non-coronary beds the ostial location is particularly prone to develop atherosclerosis and is the commonest site of disease in renal vessels. The goal of treatment in these lesions is to adequately cover the vessel ostium without leaving excess stent protruding into the aorta or the main vessel. This is important for two reasons: (1) if the ostium is missed, restenosis is invariable, and (2) if the stent protrudes too much into the aorta, there is difficulty in subsequently re-engaging the vessel with a diagnostic catheter.


Researchers at the University of Michigan have invented a device to accomplish the twin goals of adequate ostial coverage and minimal excess metal in the parent vessel. This device has a low profile and thus does not suffer from the limitations inherent to most devices currently being developed to tackle the problem. Furthermore it can be used in tandem with pre-existing technology.

Applications and Advantages


  • An ostial stenting system


  • Covers the ostium
  • Permits future guide engagement
  • Easy to deploy with minimum duration of ischemia
  • Compatable with pre-existing technology