Device for Vascular Dilation

The invention is an enhanced vascular dilator that eliminates the vascular injury caused by the size mismatch between vascular introducer sheaths and vascular dilators, as the two are advanced into a blood vessel. The invention provides a “shoulder” to match the diameter of the introducer sheath so that there is a smooth transition, without size mismatch, between the dilator and the introducer sheath. The invention allows the dilator to be withdrawn in segments from the introducer sheath. This is especially valuable to reduce vascular injury when using large-bore introducer sheaths for interventional procedures including transcatheter valves and endografts.

Potential Commercial Applications: Competitive Advantages:
  • Caval access
  • Vascular access
  • Non-perforating

Development Stage:


Robert Lederman (NHLBI)  ➽ more inventions...

Ozgur Kocaturk (NHLBI)  ➽ more inventions...

Adam Greenbaum

Intellectual Property:
US Pat: 10,537,718 issued 2020-01-21
US Application No. 61/890,961 filed on 2013-10-15
PCT Application No. PCT/US2014/060270 filed on 2014-10-13

Collaboration Opportunity:

The National Heart, Lung, and Blood Institute is seeking statements of capability or interest from parties interested in collaborative research to further develop, evaluate or commercialize interventional catheter-based procedures to reduce vascular injury. For collaboration opportunities, please contact Peg Koelble at

Licensing Contact:
Michael Shmilovich, J.D.
Phone: 301-435-5019

OTT Reference No: E-759-2013-0
Updated: Dec 3, 2013