MouthLab: A Tricorder Concept Optimized for Rapid Medical Assessment

Gene Y. Fridman, Hai Tang, David Feller-Kopman, Yang Hong

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


The goal of rapid medical assessment (RMA) is to estimate the general health of a patient during an emergency room or a doctor’s office visit, or even while the patient is at home. Currently the devices used during RMA are typically “all-in-one” vital signs monitors. They require time, effort and expertise to attach various sensors to the body. A device optimized for RMA should instead require little effort or expertise to operate and be able to rapidly obtain and consolidate as much information as possible. MouthLab is a battery powered hand-held device intended to acquire and evaluate many measurements such as non-invasive blood sugar, saliva and respiratory biochemistry. Our initial prototype acquires standard vital signs: pulse rate (PR), breathing rate (BR), temperature (T), blood oxygen saturation (SpO2), blood pressure (BP), and a three-lead electrocardiogram. In our clinical study we tested the device performance against the measurements obtained with a standard patient monitor. 52 people participated in the study. The measurement errors were as follows: PR: −1.7 ± 3.5 BPM, BR: 0.4 ± 2.4 BPM, T: −0.4 ± 1.24 °F, SpO2: −0.6 ± 1.7%. BP systolic: −1.8 ± 12 mmHg, BP diastolic: 0.6 ± 8 mmHg. We have shown that RMA can be easily performed non-invasively by patients with no prior training.

Original languageEnglish (US)
Pages (from-to)2175-2184
Number of pages10
JournalAnnals of biomedical engineering
Issue number9
StatePublished - Sep 29 2015


  • Medical assessment
  • Tricorder
  • Vital signs monitoring

ASJC Scopus subject areas

  • Biomedical Engineering


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