Johnson & Johnson has entered into a definitive agreement to acquire all outstanding shares of Shockwave Medical, Inc. for approximately $13.1 billion.    The acquisition extends J&J MedTech’s position in cardiovascular intervention and supports its shift into higher-growth markets. With the addition of Shockwave, J&J expand its MedTech cardiovascular portfolio into two high-growth segments of cardiovascular intervention, coronary artery disease (CAD) and peripheral artery disease ...