The Johnson & Johnson-backed cardiac medical device developer has completed a series B round that will fund clinical tests for its technology.

Cardiac Dimensions, a US-based cardiac surgery device developer backed by pharmaceutical firm Johnson & Johnson and financial services group Mitsubishi UFJ Financial, has closed a $39m series B round.

The round included venture capital firms Arboretum Ventures and Lumira Capital, superannuation fund Hostplus, investment firms LSP and Aperture Venture Partners, asset management firm MH Carnegie and venture debt from Oxford Finance.

Cardiac Dimensions has developed an implantable device called the Carillon Mitral Contour System to help reattach the mitral annulus,…