J. Greg Davis

Tryton Medical, Inc. manufactures and sells stent systems for the treatment of bifurcation lesions. Its tri-zone technology provides scaffolding within the side branch, radial strength in the transition zone and minimal coverage in the main vessel zone. The firm also provides side branch stent systems which are used to treat a range of bifurcated lesions. The company was founded by H. Richard Davis, Aaron V. Kaplan and Dan Cole in 2003 and is headquartered in Durham, NC.

Part of Boston Scientific Corp., Cardiac Pacemakers, Inc. is a company that specializes in implanting pacemakers in patients with an abnormally low heart rate. The company is based in St. Paul, MN. The pacemakers are implanted under the skin, in the chest area, and are connected to the heart by transvenous leads that conduct electrical impulses to pace the heart and restore a normal heart rhythm. Patients implanted with a pacemaker must be regularly monitored by their cardiologist to ensure that the pacing system is working correctly. The company was founded by Manny A. Villafana.

Guidant Corp. manufactures cardiovascular therapeutic devices. The company also provides cardiac and peripheral vascular repair surgical systems. It operates in Europe and Japan. Guidant was founded in 1994 and is headquartered in St. Paul, MN.