Marvin Slosman
Analyst · Ben Haynor with Alliance Global Partners
Thank you, Chuck. And thanks to everyone for joining the call. I want to start this morning with a regulatory note as our revenue results for the fourth quarter were impacted by the cessation of CGuard shipments due to a temporary expiration of our CE Mark on November 12, 2022. This was due to well-documented significant delays by the European regulatory bodies in the processing of applications and audits under the new Medical Device Regulation, or MDR, recertification process.
By way of background, the MDR replaced the Medical Device Directive, or MDD, which has historically governed the approval and marketing of medical devices in the EU until May 2021. The MDR deadline for transition to updated certification has taken more than 3 years with multiple revisions, delays and requirement changes, putting the entire medical device industry serving the EU markets at risk.
This complexity, combined with the constantly changing requirements and deadlines has forced the market into a very precarious situation. Our position from the beginning was to follow the new guidelines of MDR as a prudent measure of long-term compliance mandated for all new product introductions requiring this certification.
We have worked tirelessly with our notified body to complete the process throughout this uncertainty. Due to the chronic delays of scheduling our final audit prior to the expiration of our MDD certification on November 12, 2022, we temporarily lost our ability to sell in the EU markets on that date.
In anticipation, we proactively worked with our distributor partners to provide as much available inventory as possible to avoid shortages while continuing to complete the MDR process to reestablish sales. Despite our best efforts, our fourth quarter revenue reflects a shortfall of shipments following the certificate expiration.
Therefore, our fourth quarter CGuard revenue totaled $1,026,000 with a carryforward of approximately $250,000 in backlog, not shipped after the loss of the CE Mark. Had we been able to operate without this interruption, we would have recorded approximately $1.3 million in revenue.
However, I'm pleased to report that earlier this month, we were able to reinstate our CE Mark and shift to all EU countries and other jurisdictions under our previous MDD certificate as a temporary measure as we work through the final steps in our MDR certification, which we believe to be imminent.
We resumed shipments effective March 18. And although late in the quarter, we are taking every step to refill channels and ensure as a priority, the availability of the CGuard stent platform for life-saving patient care without interruption.
Managing this turbulent transition has been challenging, but we anticipate we will be one of the first companies to receive the MDR certification very soon. And for the long term, this will serve us well as a foundation of continuing to drive market growth in the EU.
We currently enjoy greater than 25% market share in over half of our served markets with some territories exceeding 80%. Our continued efforts on the ground together with this near-term launch of 2 new stent delivery systems, including a new transcarotid and advanced next-generation transfemoral platform will enable share growth and accelerate the conversion of surgeries to endovascular standard of care with the CGuard stent system.
And turning now to our U.S. regulatory activities, our C-Guardians's U.S. IDE trial continues at a remarkable pace of enrollment with 20 active trial sites. We anticipate completing enrollment next quarter. Achieving this enrollment milestone will enable next steps in the submission and approval process as we get closer to the potential launch of CGuard in the U.S. market.
As we continue to invest in preparation of the U.S. market launch, we have added a seasoned commercial executive in the vascular space, Shane Gleason to the leadership team who will lead our go-to-market preparation as GM of the Americas and Global Marketing Strategy.
In terms of product pipeline, focus on our CGuard EPS stent platform remains the foundation of our business, and we believe the importance of the implant to patient outcomes remains the single most important variable beyond the selected delivery option. In order to fully realize the potential of CGuard however, we've developed 2 new delivery systems to drive utilization across the broadest vascular specialist community.
We continue to advance development, regulatory approval and launch plans for our new transfemoral delivery system, CGuard Prime, which will be available in both standard and short shaft versions compatible with the development of SwitchGuard, our TCAR accessory device. In combination, we believe our Trans Carotid kit will enable TCAR with the best stent solution for those choosing to utilize this method of neuroprotection.
We continue to work tirelessly toward our goal of changing the paradigm of how carotid disease is managed and strokes are prevented. With CGuard EPS, we believe we can offer the best patient outcomes with the broadest set of tools to unlock the tremendous potential of this rapidly evolving market segment. We look forward to a catalyst-rich 2023 as we continue to establish CGuard as the standard of care.
With that, I'll turn the call over to Craig for the review of our first quarter financials. Craig?