This trial aims to evaluate the use of the patient's own stem cells for heart failure. The trial is being conducted at the Kanazawa University Hospital in Ishikawa and proposes to recruit six patients with ischaemic heart failure (Left Ventricular Ejection Fraction less than 40 %) between August 2012 and September 2014. All participants will have stem cells harvested from their own fat and injected directly into the coronary arteries via cardiac catheterisation. Participants will be monitored for complications and changes in clinical condition