The Dozee VS system (K221555) is a contactless device that tracks heart rate and breathing rate using a sensor sheet placed under the mattress. It captures body vibrations and converts them into vital signs, which can be monitored remotely in real time. The system also supports add-ons like a blood pressure cuff, pulse oximeter, and thermometer, offering a complete monitoring solution. This study aims to validate the updated AI-powered heart rate and improved breathing rate algorithms across different sensor sheet types to confirm clinical accuracy
The Dozee VS system (K221555), developed by Turtle Shell Technologies, is a non-invasive, contactless device that continuously monitors heart rate (HR) and breathing rate (RR). A thin sensor sheet placed under the mattress detects tiny body vibrations from the heart and lungs, which are processed by smart algorithms and displayed on a secure online dashboard for real-time monitoring. Unlike traditional methods such as ECGs, nasal tubes, or thermistors-which are invasive, require skilled placement, and are uncomfortable for long-term use-Dozee is simple, comfortable, and doesn't rely on patient compliance like wearables do. The system can also connect to add-on devices, including a blood pressure cuff, pulse oximeter, and thermometer, giving a full picture of a patient's vital signs and helping spot early signs of deterioration. Hardware upgrades now include dual-sensor sheets that improve accuracy across different mattresses and patient types. The new HR algorithm uses AI/ML for better accuracy, while the improved RR algorithm performs more reliably even with movement or weak signals. Study Goal: This study aims to validate the updated algorithms (Gen 2) for HR and RR across the three sensor sheet types (DS, S1, and S1-I) to ensure they meet clinical accuracy standards
Study Type
OBSERVATIONAL
Enrollment
60
All participants will be on standard telemetry monitoring for Heart Rate, Respiration Rate and movements using the gold standard (Electrocardiography and Capnography respectively).
ERA Health Research
Midland, Texas, United States
RECRUITINGMean Absolute Error (MAE) of Dozee's Heart Rate a from the Gold Standard ECG
Heart Rate collected at 1 Min intervals from gold standard and Dozee. Mean Absolute Error (MAE) of the Dozee Heart Rate will be calculated.
Time frame: 6 months
Accuracy (%) of Dozee in identfying subject movement
Time stamps of subject movement during the study will be recorded manullay. Time stamps of Dozee's movement will be recorded. Accuracy of the Dozee device in detecting movement compared to manual observation will be computed in terms of percentage.
Time frame: 6 months
Accuracy(%) of of Dozee's bed-exits
Time stamps of bed-exits will be recorded manually during the study will be recorded. Time stamps of Dozee's bed-exit will be computed. Accuracy of the Dozee device in detecting bed-exit compared to manual observation as gold standard will be computed in terms of percentage.
Time frame: 6 months
Mean Absolute Error (MAE) of Dozee's Respiratory Rate from the Gold Standard Capnography
Respiratory Rate collected at 1 Min intervals from gold standard and Dozee. Mean Absolute Error (MAE) of the Dozee Respiratory Rate will be calculated.
Time frame: 6 Months
Range of values (minimum, maximum, and spread) of Heart Rate in beats per min measured by the gold standard and the Dozee
The outcome will be assessed by comparing the range of values (minimum, maximum, and spread) of Heart Rate ( beats per minute) measured by the gold standard and the Dozee over the study period.
Time frame: 6 months
Range of values (minimum, maximum, and spread) of Respiratory Rate in breaths per min measured by the gold standard and the Dozee
The outcome will be assessed by comparing the range of values (minimum, maximum, and spread) of Respiratory Rate ( breaths per minute) measured by the gold standard and the Dozee over the study period.
Time frame: 6 Months
Bland- Altman Level of Agreement between Dozee Heart Rate and Respiratory Rate with the Gold Standard
Level of Agreement between Dozee's HR and RR with reference device computed by Bland Altman.
Time frame: 6 months
Detection rate (%) of the Dozee's Heart Rate and Respiratory Rate
The time-stamps of Dozee's Heart Rate and Respiratory Rate and the gold standard Heart Rate and Respiratory Rate will be recorded. DR is the proportion of gold standard points for which the DS successfully provides a corresponding measured value, relative to the total number of gold standard points.
Time frame: 6 months
Level of Agreement between Dozee Heart Rate and Respiratory Rate with the Gold Standard
Level of Agreement between Dozee Heart Rate and Respiratory Rate with the Gold Standard by using Deming Regression with Pearson Co-efficient
Time frame: 6 months
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