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CTRI Number  CTRI/2022/09/045271 [Registered on: 06/09/2022] Trial Registered Prospectively
Last Modified On: 12/04/2023
Post Graduate Thesis  No 
Type of Trial  Observational 
Type of Study   Case Control Study 
Study Design  Single Arm Study 
Public Title of Study   Dozee device validation for vitals monitoring 
Scientific Title of Study   Validation of the Dozee System 
Trial Acronym  DZ_SP_VAL 
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Dr Kumar Kenchappa 
Designation  Consultant Interventional Cardiologist 
Affiliation  SPARSH Super Specialty Hospital 
Address  SPARSH Super Specialty Hospital 146, Infantry Rd, Vasanth Nagar, Bengaluru

Bangalore
KARNATAKA
560001
India 
Phone  8861499206  
Fax    
Email  drkumarkenchappa@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Pooja Kadambi  
Designation  Head, Innovation and Clinical Research 
Affiliation  Turtle Shell Technologies  
Address  Turtle Shell Technologies City Centre, 40, Ground & Mezzanine flr, Nomads Daily Huddle, Chinmaya Mission Hospital Rd, Indiranagar, Bengaluru

Bangalore
KARNATAKA
560038
India 
Phone    
Fax    
Email  pooja@dozee.io  
 
Details of Contact Person
Public Query
 
Name  Pooja Kadambi  
Designation  Head, Innovation and Clinical Research 
Affiliation  Turtle Shell Technologies  
Address  Turtle Shell Technologies City Centre, 40, Ground & Mezzanine flr, Nomads Daily Huddle, Chinmaya Mission Hospital Rd, Indiranagar, Bengaluru

Bangalore
KARNATAKA
560038
India 
Phone    
Fax    
Email  pooja@dozee.io  
 
Source of Monetary or Material Support  
Turtle Shell Technologies Private Limited City Centre, #40, Ground & Mezzanine flr, Nomads Daily Huddle, Chinmaya Mission Hospital Rd, Indiranagar, Bengaluru, Karnataka 560038  
 
Primary Sponsor  
Name  Turtle Shell Technologies Private Limited  
Address  City Centre, #40, Ground & Mezzanine flr, Nomads Daily Huddle, Chinmaya Mission Hospital Rd, Indiranagar, Bengaluru, Karnataka 560038  
Type of Sponsor  Other [Medical Device] 
 
Details of Secondary Sponsor  
Name  Address 
NIL  NIL 
 
Countries of Recruitment     India  
Sites of Study  
No of Sites = 1  
Name of Principal Investigator  Name of Site  Site Address  Phone/Fax/Email 
Dr Kumar Kenchappa  SPARSH Super Specialty Hospital  Room number 10, Ground floor OPD,Prestige Opal # 146, Infantry Rd, Opposite to police commissioners office Vasanth Nagar, Bengaluru- 560001
Bangalore
KARNATAKA 
8861499206

drkumarkenchappa@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Sparsh Hospital Ethics Committee   Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Healthy Human Volunteers  Validation of vitals including HR, HRV, RR, temperature, SpO2, BP, heart rhythm, posture, motion (movement accuracy and bed exit accuracy) 
Patients  (1) ICD-10 Condition: 4||Measurement and Monitoring,  
 
Intervention / Comparator Agent  
Type  Name  Details 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  90.00 Year(s)
Gender  Both 
Details  1. Consenting adults (>18 years old) who are healthy individuals or patients undergoing treatment in the hospital (OPD, General wards, Emergency wards)
2. Weight between 40kg-150kgs
3. They/legal representative are able and willing to provide written informed consent or have a legally authorized representative willing to provide written informed consent 
 
ExclusionCriteria 
Details  1. Weight below 40 kgs and above 150 kgs
2. Currently pregnant
3. Exhibit injuries, deformities, or other abnormalities that, in the opinion of the investigator, may prevent proper placement of accessories
4. Level of agitation or non-compliance too high to enroll
5. Needs the use of equipments whose operation can interfere with Dozee’s signal
6. A significant medical condition in the judgment of the investigator, which may compromise the study testing procedures 
 
Method of Generating Random Sequence   Not Applicable 
Method of Concealment   Not Applicable 
Blinding/Masking   Not Applicable 
Primary Outcome  
Outcome  TimePoints 
1. Mean absolute Error (MAE) of Dozee’s vitals parameters, HR, HRV, RR, BP, Temperature and SpO2 in comparison with the gold standard and or
equivalent devices
2. Motion Notification Accuracy (%), Bed Exit Notification Accuracy and
Posture Accuracy (%) of the Dozee in comparison with equivalent devices and manual observations.
3. Dozee’s sensitivity in the detection of heart rhythms in comparison with the gold standard method. 
At Baseline 
 
Secondary Outcome  
Outcome  TimePoints 
1. Dozees detection rate and/or detection range of HR, HRV, RR, BP, SpO2, cardiac rhythms in comparison to the gold standard and/or equivalent
devices in various hospital bed/mattress setups and environmental conditions. 
At Baseline 
 
Target Sample Size   Total Sample Size="100"
Sample Size from India="100" 
Final Enrollment numbers achieved (Total)= "Applicable only for Completed/Terminated trials"
Final Enrollment numbers achieved (India)="Applicable only for Completed/Terminated trials" 
Phase of Trial   N/A 
Date of First Enrollment (India)   12/09/2022 
Date of Study Completion (India) Applicable only for Completed/Terminated trials 
Date of First Enrollment (Global)  Date Missing 
Date of Study Completion (Global) Applicable only for Completed/Terminated trials 
Estimated Duration of Trial   Years="1"
Months="0"
Days="0" 
Recruitment Status of Trial (Global)
Modification(s)  
Not Applicable 
Recruitment Status of Trial (India)  Open to Recruitment 
Publication Details   NIL 
Individual Participant Data (IPD) Sharing Statement

Will individual participant data (IPD) be shared publicly (including data dictionaries)?  

Response - NO
Brief Summary  

The most common parameters supervised by healthcare professionals to monitor patients’ health are heart rate (HR), heart rate variability (HRV), respiration rate (RR), oxygen saturation (SpO2), temperature, blood pressure (BP), and heart rhythm [1]. Existing gold standard methods for measuring HR, HRV and RR necessitate the use of multi-lead ECG sensors [2] and nasal thermistor/nasal cannulas [3], which are both cumbersome and require a high level of patient compliance. These methods, too, necessitate some clinical expertise for proper application. Many advances have been made in the use of wearables to achieve long-term monitoring of vitals [4,5]. However wearables also require a high level of patient compliance. Monitoring of these vitals with less cumbersome techniques would be ideal in long term monitoring of patients and healthy people to detect any sudden abnormalities and long-term health deterioration.  

The Dozee device developed by Turtle Shell Technologies Pvt. Ltd., is a non-contact continuous vital parameters monitoring system. It is designed for continuous and contactless measurement of HR HR, RR, and SpO2 (when connected with an accessory). The device uses the concept of ballistocardiography and deploys piezoelectric sensors to capture the micro-vibrations originating from cardiac contractions, upper respiratory tract activity and body movements. This data is then analyzed by a proprietary algorithm and the values of the vital parameters are generated. The sensor sheet is placed below the mattress and captures data while the user is resting or sleeping and does not require a sensor to be fixed to the body making it ideal when compared to current methods. Monitoring people’s vital signs outside an ICU often relies on nursing staff conducting checks at set intervals. The device can reduce the workload for nursing staff in non-ICU wards. This device is intended to be used to monitor individuals/patients greater than eighteen years of age (between 40kg-150kgs) and can measure their vital signs during sleep and resting state. The data can be viewed on the dashboard, exported, and even be directly transferred to the in-house hospital management software. This protocol aims at validating the effectiveness of the investigational device in a general-care clinical environment.

1. Dias D, Paulo Silva Cunha J. Wearable Health Devices-Vital Sign Monitoring, Systems and Technologies. Sensors (Basel). 2018 Jul 25;18(8):2414. doi: 10.3390/s18082414. PMID:30044415; PMCID: PMC6111409.

2. Sandau KE, et.al., American Heart Association Council on Cardiovascular and Stroke Nursing;Council on Clinical Cardiology; and Council on Cardiovascular Disease in the Young. Update to Practice Standards for Electrocardiographic Monitoring in Hospital Settings: A Scientific Statement From the American Heart Association. Circulation. Nov 7;136(19):e273-e344.(2017)

3. Subbe, Christian Peter & Kinsella, Sean. (2018). Continuous Monitoring of Respiratory Rate in Emergency Admissions: Evaluation of the RespiraSenseTM Sensor in Acute Care Compared to the Industry Standard and Gold Standard. Sensors. 18. 2700. 10.3390/s18082700.

4. Etiwy M, Akhrass Z, Gillinov L, et al. Accuracy of wearable heart rate monitors in cardiac rehabilitation [published correction appears in Cardiovasc Diagn Ther. 2020 Jun;10(3):644-645]. Cardiovasc Diagn Ther. 2019;9(3):262-271. doi:10.21037/cdt.2019.04.08

5. Charlton PH, Bonnici T, Tarassenko L, Clifton DA, Beale R, Watkinson PJ. An assessment of algorithms to estimate respiratory rate from the electrocardiogram and photoplethysmogram. Physiol Meas. 2016;37(4):610-626. doi:10.1088/0967-3334/37/4/610


 
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