A Locking Device for Permanently Securing Surgical Suture Loops

This technology relates to a device that can be used to non-invasively secure surgical suture loops when combined with a percutaneous delivery system. It has been shown to be effective in correcting mitral valve regurgitation (MVR) in an animal model. During the procedure, a guidewire is percutaneously conveyed to the atrium of the heart and is used to secure the "cerclage" suture encircling the mitral valve annulus, which is delivered using a delivery catheter. The locking device is advanced over the suture by the delivery catheter and it permanently secures the suture and maintains the tension on the annulus once the delivery system is removed. This locking device, in combination with the percutaneous procedure, allows for more complete coaptation of the valve leaflets and correction of MVR without the need for open heart surgery and its associated risks. The locking device is also adjustable, allowing the user to vary the tension on the suture if further tightening or loosening is required. It is also MRI compatible and all follow-up studies can be performed under MRI.

This invention has demonstrated its ability to correct MVR in animals where the locking device was observed to maintain the correct position and tension after implantation. This device has the potential to replace the traditional loop and knot method used for surgical correction of MVR, and may also be useful for other conditions that require permanently secured suture loops.

Potential Commercial Applications: Competitive Advantages:
  • Non-invasive and effective correction of MVR and other conditions
  • Tensioning device for securing suture loops
  • Technology amenable to a non-invasive technique
  • Control of tension on surgical sutures

Development Stage:
Early stage


Ozgur Kocaturk (NHLBI)  ➽ more inventions...

Intellectual Property:
US Pat: 10,285,813 issued 2019-05-14
US Application No. 14/956,238 filed on 2015-12-01
PCT Application No. PCT/US2010/026245 filed on 2010-03-04
US Application No. 13/254,160 filed on 2011-08-31

Collaboration Opportunity:

The National Heart Lung and Blood Institute Cardiac Catheterization Lab is seeking statements of capability or interest from parties interested in collaborative research to further develop, evaluate, or commercialize the tension fixation device. Please contact Peg Koelble at 301-594-4095 or koelblep@nhlbi.nih.gov for more information.

Licensing Contact:
Pragnesh Mistry,
Email: pragnesh.mistry@nih.gov
Phone: 301-435-4616

OTT Reference No: E-048-2009-0
Updated: Jul 3, 2009