[Code of Federal Regulations] [Title 21, Volume 8] [Revised as of April 1, 2003] From the U.S. Government Printing Office via GPO Access [CITE: 21CFR890.1450] [Page 499] TITLE 21--FOOD AND DRUGS CHAPTER I--FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) PART 890--PHYSICAL MEDICINE DEVICES--Table of Contents Subpart B--Physical Medicine Diagnostic Devices Sec. 890.1450 Powered reflex hammer. (a) Identification. A powered reflex hammer is a motorized device intended for medical purposes to elicit and determine controlled deep tendon reflexes. (b) Classification. Class II (performance standards).