Tryton Medical Announces Completion of Enrollment in the EXTENDED ACCESS Registry for its Tryton Side Branch Stent

DURHAM, N.C.–(BUSINESS WIRE)–Tryton Medical, Inc., the leading developer of stents designed to treat
bifurcation lesions, today announced the completion of enrollment in the
Extended Access Registry, a single arm study of its Tryton Side Branch
Stent. The Tryton registry is designed to confirm the results from
Tryton’s Pivotal IDE Trial, and has successfully enrolled 133 patients
from Europe and the United States.

“The completion of patient enrollment in the Extended Access Registry is
a major milestone for Tryton Medical. We’re demonstrating power in
numbers, now studying over 1,800 patients at more than 100 clinical
sites across 15 countries. We’ve also generated extensive real world
clinical experience with over 11,000 patients treated with Tryton Side
Branch Stent thus far in countries where it is commercially available,”
said Shawn P. McCarthy, President and CEO of Tryton Medical. “We are
very grateful to our investigators and their research teams for their
dedication to this important trial. We will soon be filing our
pre-market approval application to FDA, and remain on schedule to be the
first and only dedicated bifurcation stent available in the U.S.”

The Tryton Extended Access Registry builds on the results of the TRYTON
IDE Study, which showed the benefit of treatment with Tryton Side Branch
Stent in a post-hoc analysis of patients involving significant
bifurcations, representing the intended population. In this intended
population, the TRYTON IDE Study showed reductions in target vessel
failure and statistical difference of side branch percent diameter
stenosis in patients with side branch vessels of 2.25 mm diameter or
greater by quantitative coronary angiography. The Tryton Extended Access
Registry is designed to further confirm the acceptable safety profile of
the Tryton stent as seen in the post hoc analysis. Results from this
registry, together with results from the Pivotal IDE Trial, will be
submitted in a pre-market approval (PMA) application to the U.S. Food
and Drug Administration before the end of 2015.

Coronary artery disease often results in the buildup of plaque at the
site of a bifurcation, where one artery branches from another. Current
approaches to treating bifurcation lesions can be time consuming and
technically difficult. As a result, the side branch is often left
unstented, leaving it vulnerable to higher rates of restenosis, the
re-narrowing of the stented vessel following implantation. In addition,
accumulation of plaque that narrows the base of the coronary tree, also
known as left main disease, remains a persistent challenge in
interventional cardiology that could benefit from new treatment options.
More than 75 percent of left main lesions are bifurcation lesions.

About Tryton Side Branch Stent

Tryton Side Branch Stent System is built using proprietary Tri-ZONE®
technology to offer a dedicated strategy for treating bifurcation
lesions. Tryton’s cobalt chromium stent is deployed in the side branch
artery using a standard single wire balloon-expandable stent
delivery system. A conventional drug eluting stent is then placed in the
main vessel. Tryton Side Branch Stent has now been used to treat more
than 11,000 patients worldwide. The Tryton Side Branch Stent is
commercially available in multiple countries within Europe, Middle East
& Africa, is investigational in the US, and is not available in Japan.

About Tryton Medical, Inc.

Tryton Medical, Inc., located in Durham, N.C., is the leading developer
of novel stent systems for the treatment of bifurcation lesions. The
company was founded in 2003 by Aaron V. Kaplan, M.D., professor of
medicine at Dartmouth Medical School/Dartmouth-Hitchcock Medical Center,
to develop stents for the definitive treatment of bifurcation lesions.
For more information please visit trytonmedical.com
and follow the company on Twitter at @TrytonMedical1.