Key Surgical Inc. and Interlock Medizintechnik GmbH have merged to create one of the world’s leading providers of sterile processing and operating room supplies. Water Street Healthcare Partners, a strategic investor focused exclusively on the health care industry, led the merger of the U.S. and European providers and invested in the newly combined company.

“We are tremendously excited about the combination of our companies and the benefits it will bring to our customers,” said Scot Milchman, chief executive officer, Key Surgical. “Key Surgical and Interlock are highly regarded in the U.S. and Europe for our expertise, broad product offering and exceptional customer service. Together, we will offer hospitals and surgical centers a comprehensive portfolio of products and supplies that support the industry’s highest quality standards for patient care and safety in the surgical setting.”

Financial terms of the transaction are not being disclosed.