A HUMAN NECESSITIES
A61 MEDICAL OR VETERINARY SCIENCE; HYGIENE
A61B DIAGNOSIS; SURGERY; IDENTIFICATION
A61B5/00 Measuring for diagnostic purposes; Identification of persons
A61B5/145 Measuring characteristics of blood in vivo, e.g. gas concentration or pH-value; ; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid or cerebral tissue;
A61B5/14542 for measuring blood gases