Private equity firm Arsenal Capital Partners Inc., which backs middle-market companies in the healthcare and specialty industrial sectors, acquired Accumen Inc. for an undisclosed sum.

Accumen provides technology-enabled performance optimization solutions to healthcare providers' clinical laboratories, patient blood monitoring systems, outreach services and imaging services.

The seller was Accretive LLC, a New York City-based specialized investment firm.

MTS Health Partners LP and Ropes & Gray LLP were the financial and legal advisers to Arsenal, respectively. Nexus Health Capital was financial adviser to Accumen, with Greenberg Traurig PA acting as its legal adviser.