[Code of Federal Regulations] [Title 21, Volume 8] [Revised as of April 1, 2002] From the U.S. Government Printing Office via GPO Access [CITE: 21CFR882.4250] [Page 409] TITLE 21--FOOD AND DRUGS CHAPTER I--FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) PART 882--NEUROLOGICAL DEVICES--Table of Contents Subpart E--Neurological Surgical Devices Sec. 882.4250 Cryogenic surgical device. (a) Identification. A cryogenic surgical device is a device used to destroy nervous tissue or produce lesions in nervous tissue by the application of extreme cold to the selected site. (b) Classification. Class II (performance standards).