{"data":{"id":"us/21-cfr-868.1760","jurisdiction":"us","citation":"21 CFR 868.1760","heading":"Volume plethysmograph.","body":"(a) Identification. A volume plethysmograph is an airtight box, in which a patient sits, that is used to determine the patient's lung volume changes.\n(b) Classification. Class II (performance standards).","path":["Title 21—Food and Drugs","CHAPTER I—FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES","SUBCHAPTER H—MEDICAL DEVICES","PART 868—ANESTHESIOLOGY DEVICES","Subpart B—Diagnostic Devices"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-21.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:24:47Z","sha256":"b8862097bb7074e8ec301e51fe9124c7a09070d508fbeaa1e17d35067426006d","source_id":"us-cfr","stale":true,"prev":"us/21-cfr-868.1750","next":"us/21-cfr-868.1780"},"notice":"GroundRules: Original legal text. Not legal advice."}