Sutureless Anastomosis Device

Tech ID: 24410 / UC Case 2014-877-0


Researchers from the University of California, Davis have invented a sutureless anastomotic device for the repair of blood vessels. Allowing for easier and faster vascular anastomosis than current devices that require suturing, this invention improves graft success by incorporating design features that reduces blood flow turbulence and minimizes damage to the native vessel.

Full Description

Native venous or arterial grafts are commonly used for vascular replacements. However, the use of native grafts is limited by their availability (size and diameter) and a fairly high ten-year failure rate.

Artificial grafts represent an ideal replacement to native grafts because they can be mass produced with various lengths and diameters. To date, conventional artificial vascular grafts consist of hollow conduits that will be sutured by anastomosis at both ends of the blood vessel. To prevent leakage, special suturing techniques, which are technically time-consuming to perform, are required. Moreover, at anastomotic sites, the mismatch of the diameters of the vascular grafts and the existing vessels creates turbulent flow that results in occlusion formation, a major contributor to failure of artificial vascular grafts.

Researchers at the University of California, Davis have successfully invented a two-layer artificial vascular graft that foregoes standard suturing techniques and prevents fluid leakage. Because it is installed without sutures, it allows for faster application and reduces operator error. In addition, this device incorporates a bilaminar tube with special shape design feature that limits flow turbulence, reduces vessel damage, and facilitates re-endothelialization. This invention represents an ideal artificial vascular graft replacement that promotes graft success and repair by reducing the risk for intimal hyperplasia, arterial stenosis, thrombosis, and graft failure. Thus, this sutureless anastomotic device will be highly valuable to the surgical market.


  • Useful as an artificial vascular graft replacement


  • Is sutureless, allowing for faster application and reducing operator error
  • Reduces turbulent flow
  • Minimizes damage to native vessel

Patent Status

Country Type Number Dated Case
United States Of America Published Application 20170128072 05/11/2017 2014-877


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  • Boudreault, David
  • Pivetti, Christopher
  • Sitkin, Nicole
  • Wang, Aijun

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