Boston Scientific to pay $1B for portable heart monitor maker in Eagan Dee DePass, Star Tribune Boston Scientific has agreed to buy Eagan cardiac monitor maker Preventice Solutions Inc., in which it already had a 22% stake, for nearly $1 billion, the company said Thursday. The deal, expected to close this summer, includes a net cash payment of $720 million plus possible "commercial milestone payments" of up to $230 million. Preventice is a fast-growing company founded in 2007. Last year, sales increased 30% to $158 million. The company, which employs 500 people and also has offices in Houston and Rochester, Minn., is part of the cardiac diagnostic and services market that is estimated to be worth $2 billion and grow double digits each year.