Also refer -
AAMI TIR No. 12: 2004 - Designing, Testing, and Labeling Reusable Medical Devices for Reprocessing in Healthcare Facilities: A Guide for Device Manufacturers.
AAMI TIR No. 30: 2003 - A compendium of processes, materials, test methods, and acceptance criteria for cleaning reusable medical devices.
Refer
FDA article under Sources of Additional Information (bottom of page)
and
MHRA Guidance Documents