PLANO, Texas, March 22, 2012 – Argon Medical Devices, Inc. announced today the US launch of the UltraStream Chronic Hemodialysis catheter, licensed from Rex Medical, LP, designed to provide long-term vascular access to patients receiving dialysis treatments.

“UltraStream provides clinicians with an innovative tool to improve care and quality of life for their patients,” commented George Leondis, President of Argon. “This unique technology broadens our dialysis platform and highlights our commitment to this growing disease state.”

The UltraStream Chronic Hemodialysis catheter is the only Chronic Dialysis catheter available with innovative dual lumen arterial lines and a modified step tip design that allow for high flow rates and ease of insertion, providing the combination of clinician satisfaction and improved patient outcomes. This exclusive step tip design allows for placement, both over the wire, and through a peel-away sheath. The seamless transition from the dilator to the step tip facilitates easier catheter exchanges.

UltraStream catheters are provided in a variety of set configurations to meet physician preferences.

There are currently over 571,000 patients diagnosed and treated for End-Stage Renal Disease, with over 116,000 newly diagnosed patients in 2009.* This 3.5% increase in ESRD is the highest since 2000.

About Argon

Argon Medical is a global manufacturer of specialty medical products headquartered in Plano, Texas. We offer a broad line of medical devices for Interventional Radiology, Vascular Surgery, Interventional Cardiology, and Critical Care procedures. Our newest products include the Option(TM) Retrievable Inferior Vena Cava Filter, Cleaner Rotational Thrombectomy System, and UltraStream Chronic Dialysis Catheter. We also offer complete lines of PICC and midline catheters, endomyocardial biopsy forceps, introducer sheaths, pressure transducers, and other vascular products. Our products are sold globally through a combination of direct sales representatives and premier distributors.

About Roundtable

RoundTable Healthcare Partners, based in Lake Forest, IL, is an operating-oriented private equity firm focused exclusively on the health-care industry. The partners of RoundTable have significant experience in managing, operating, acquiring and financing multibillion-dollar diversified health-care companies. RoundTable partners with companies that can benefit from its extensive industry relationships and proven operating and transaction expertise.

About Rex

Rex Medical, LP, based in Conshohocken, PA, is a privately held medical device company specializing in the development, manufacturing and marketing of minimally invasive medical devices targeted towards the cardiovascular, venous access, endosurgery and oncology markets.

* 2011 USRDS Annual Data Report – United States Renal Data System