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Completed

NCT Number: NCT07223931

Validating Dozee for Contactless Monitoring of Heart, Breathing, and Movemen

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

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Key information

Conditions

No Specific Medical Conditions or Disease States No Specific Conditions

Age range

18 year–100 year

Sex eligibility

All sexes

Study type

Observational

Primary location

ERA Health Research

Midland, Texas, 79707, United States

About this study

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

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

Subjects will be included if they meet the following inclusion criteria:

  • Adults Male or female. (Above 18 years of age)
  • Provide written informed consent.
  • Weight between 40kg/88.18lbs and 120kg/264.55lbs
  • Agree to not eat during the testing period
  • Able to move and exit the bed independently and safely.

Exclusion criteria

Subjects will be excluded if they have any of the following inclusion criteria:

  • Are connected to a device that may interfere with the device monitoring in this study.
  • Are receiving any bedside care which may be incompatible with the study procedures.
  • A likely need to receive or undergo a procedure during the testing period.
  • Cannot accept a nasal cannula, or have an ECG leads placed on the chest.
  • Have a significant medical condition in the judgement of the investigator, which may compromise the study testing procedures.

Treatment and study plan

Device: Telemetry monitoring

Device

All participants will be on standard telemetry monitoring for Heart Rate, Respiration Rate and movements using the gold standard (Electrocardiography and Capnography respectively).

Primary outcomes

  1. Mean Absolute Error (MAE) of Dozee's Heart Rate a from the Gold Standard ECG

    Time frame: 6 months

    Heart Rate collected at 1 Min intervals from gold standard and Dozee. Mean Absolute Error (MAE) of the Dozee Heart Rate will be calculated.

  2. Accuracy (%) of Dozee in identfying subject movement

    Time frame: 6 months

    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.

  3. Accuracy(%) of of Dozee's bed-exits

    Time frame: 6 months

    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.

  4. Mean Absolute Error (MAE) of Dozee's Respiratory Rate from the Gold Standard Capnography

    Time frame: 6 Months

    Respiratory Rate collected at 1 Min intervals from gold standard and Dozee. Mean Absolute Error (MAE) of the Dozee Respiratory Rate will be calculated.

Secondary outcomes

  1. Range of values (minimum, maximum, and spread) of Heart Rate in beats per min measured by the gold standard and the Dozee

    Time frame: 6 months

    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.

  2. Range of values (minimum, maximum, and spread) of Respiratory Rate in breaths per min measured by the gold standard and the Dozee

    Time frame: 6 Months

    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.

  3. Bland- Altman Level of Agreement between Dozee Heart Rate and Respiratory Rate with the Gold Standard

    Time frame: 6 months

    Level of Agreement between Dozee's HR and RR with reference device computed by Bland Altman.

  4. Detection rate (%) of the Dozee's Heart Rate and Respiratory Rate

    Time frame: 6 months

    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.

  5. Level of Agreement between Dozee Heart Rate and Respiratory Rate with the Gold Standard

    Time frame: 6 months

    Level of Agreement between Dozee Heart Rate and Respiratory Rate with the Gold Standard by using Deming Regression with Pearson Co-efficient

Sponsors and collaborators

Lead sponsor

Turtle Shell Technologies Pvt. Ltd.

Industry

Collaborators

  • Eastside Research Associates

Registry information

Official study title

Clinical Validation of the Dozee System for Contactless Monitoring of Heart Rate, Respiration Rate, Motion, and Bed-Exits

Important dates

Study start
2025
Primary completion
2025
Study completion
2025
First posted
Nov 3, 2025
Registry last updated
Jul 27, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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