Cardiac Dimensions, a leader in the development of innovative, minimally invasive treatments for patients with heart failure, today announced the company has closed a $39 million Series B financing. The round includes new investor, Australia-based Hostplus, venture debt from Oxford Finance LLC, as well as support from existing investors M. H. Carnegie & Co., Arboretum Ventures, Lumira Capital, LSP Health Economics Fund and Aperture Venture Partners.