ATS Medical
Former Minneapolis-based medical device company specializing in cardiac surgery products, including mechanical and biological heart valves, cryoablation systems, and surgical tools.
Last updated August 26, 2026
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Overview
ATS Medical, Inc. was a United States medical device company headquartered in Minneapolis, Minnesota, whose business focused on products used in cardiac surgery. Founded in 1992 by Manny Villafana, an entrepreneur with experience in cardiology and cardiac surgery, the company developed a portfolio intended for heart-valve replacement, heart-valve repair, treatment of cardiac arrhythmias, and the routine surgical needs of cardiac surgeons. ATS Medical’s principal early innovation was the ATS Open Pivot Heart Valve, a bileaflet mechanical heart valve designed around a pivot mechanism using protruding spherical structures. Conventional bileaflet valves created a cavity around the leaflet pivot, while ATS’s design sought to reduce that cavity and promote more favorable blood flow through the valve. The intended clinical benefit was to reduce areas of disturbed or stagnant flow that could contribute to thrombus formation, although use of any mechanical valve remains associated with the need for clinical management of blood-clot risk. The Open Pivot Heart Valve entered international markets in 1992. ATS later received clearance from the United States Food and Drug Administration to market the device in the United States in 2000. According to the cited company history, more than 140,000 of the valves had been implanted worldwide by the time of the referenced account. This valve platform formed the foundation of ATS Medical’s identity in the cardiac-surgery device market. Over time, ATS broadened its activities beyond mechanical valve replacement. Its heart-valve therapy portfolio included mechanical valves, biological or tissue valves, and products used in aortic and mitral valve replacement and repair. The company also developed surgical cryoablation products for treating cardiac arrhythmias. A further business area comprised surgical tools and accessories, including instruments for conventional cardiac procedures and products intended to support robotic surgery. ATS Medical operated as a publicly traded company before being acquired by Medtronic in 2010. The acquisition ended ATS Medical’s existence as an independent public company and brought its cardiac-surgery technologies and product portfolio into Medtronic. As a standalone brand, ATS Medical is therefore historical rather than active, although its products and technologies became part of the acquiring company’s broader medical-device business.
History
ATS Medical was established in 1992 in Minneapolis, Minnesota, by Manny Villafana, an entrepreneur active in the cardiology and cardiac-surgery field. From its beginning, the company concentrated on medical devices for cardiac procedures rather than operating as a general-purpose healthcare manufacturer. Its defining early product was the ATS Open Pivot Heart Valve, a mechanical bileaflet valve. The product used a distinctive pivot structure based on protruding spheres on which the valve leaflets moved. ATS presented the design as a way to eliminate or reduce the cavity associated with the pivot mechanism of other bileaflet valves. By changing the geometry around the leaflet pivots, the company aimed to produce more favorable blood-flow characteristics and minimize conditions that could encourage clot formation. The valve was first sold in international markets in 1992. Its subsequent United States regulatory milestone came in 2000, when the product received Food and Drug Administration clearance for U.S. marketing. The company’s cited history reports that more than 140,000 valves had been implanted worldwide, demonstrating the commercial reach of its principal technology even though the available reference material does not provide a complete year-by-year sales record. ATS Medical later developed a broader cardiac-surgery portfolio. Its heart-valve therapy activities covered mechanical and biological prosthetic valves, with products aimed at aortic-valve replacement, mitral-valve replacement, and valve repair. The company also entered surgical cryoablation, a technique used in the treatment of cardiac arrhythmias. In addition, it supplied surgical tools and accessories for cardiac surgeons, including instruments and products designed for robotic surgical procedures. This expansion made ATS Medical more than a single-product valve company, while retaining cardiac surgery as its central market. The available material does not identify all product names, regulatory approvals, commercial partnerships, or changes in management during the company’s independent period. In 2010, Medtronic acquired ATS Medical. The transaction transferred ATS’s business and technologies to Medtronic and brought the independent ATS Medical corporate entity to an end. Accordingly, ATS Medical is best documented as a historical cardiac-surgery medical-device company whose most recognizable contribution was the Open Pivot mechanical heart-valve platform.
- 2010
Acquired by Medtronic
[1]Medtronic acquired ATS Medical, ending its status as an independent publicly traded company.
- 2000
United States clearance for Open Pivot Heart Valve
[1]The Open Pivot Heart Valve received FDA clearance for sale in the United States.
- 1992
Company founded
[1]Manny Villafana founded ATS Medical as a company focused on products for cardiology and cardiac surgery.
- 1992
Open Pivot Heart Valve introduced internationally
[1]ATS Medical began selling its Open Pivot mechanical heart valve in international markets.
Products and positioning
A cardiac-surgery device specialist built around heart-valve technology and expanded into valve therapy, surgical ablation, and procedure-specific surgical tools.
Mechanical heart valve · 1992
ATS Open Pivot Heart Valve
ATS Medical’s signature mechanical bileaflet heart valve used a pivot mechanism built around protruding spherical structures. The design sought to avoid the cavity associated with the pivots of other bileaflet valves and to improve blood flow through the prosthesis. It was introduced internationally in 1992 and received FDA clearance for U.S. marketing in 2000. The cited company history states that more than 140,000 valves were implanted worldwide.
Heart-valve replacement and repair
Heart Valve Therapy portfolio
ATS Medical’s broader valve-therapy business included mechanical and biological heart valves as well as products for heart-valve repair. The portfolio addressed procedures involving both the aortic and mitral valves, extending the company beyond its original mechanical-valve platform.
Cardiac arrhythmia treatment
Surgical Cryoablation
The company developed surgical cryoablation products for use in treating cardiac arrhythmias. The available reference material identifies the business category but does not specify individual product names, launch dates, or detailed technical specifications.
Cardiac-surgery instruments
Surgical Tools and Accessories
ATS Medical supplied surgical tools and accessories for cardiac surgeons, including products intended for robotic surgery and instruments designed around specific procedural requirements. The cited material does not enumerate the complete product range.
Brand decisions
2010
Accepted acquisition by MedtronicM&ABackground
ATS Medical had developed a diversified cardiac-surgery portfolio spanning valves, ablation, and surgical instruments, while operating as a publicly traded company.
Action taken
Medtronic acquired ATS Medical and absorbed its business and technologies.
Aftermath
ATS Medical ceased to operate as an independent public company and became part of Medtronic.
Recent events
- 2010
Medtronic acquired ATS Medical[1]
M&A
Medtronic acquired ATS Medical, ending the company’s operation as an independent publicly traded cardiac-surgery device company.
Sources1 sources
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