title: A bubble detector for automatic analgesic drug injectors.
mesh_terms: D000700:Analgesics / Q000008:administration & dosage*; D004582:Electronics, Medical; D004618:Embolism, Air / Q000517:prevention & control*; D006801:Humans; D007278:Injections, Spinal / Q000295:instrumentation*; D055095:Optics and Photonics; D013594:Syringes
chemical_list: D000700:Analgesics