Multi sensor handheld medical diagnostic device
A handheld medical diagnostic device integrates at least seven sensor modules, including a high-magnification camera, otoscope camera, stethoscope, infrared thermometer, EKG, pulse oximeter, body composition monitor, glucometer, and/or hematology analyzer. The device features a system-on-chip (SoC) processor for intelligent data management, edge computing, and cloud-based AI processing, while applying privacy-preserving techniques. A wireless transceiver enables data transmission and reception between the sensors, edge compute nodes, and cloud platforms. The ergonomically designed housing includes a display with a force-sensitive layer for user input and navigation. The high-magnification camera module offers 300× magnification for visualizing blood cells and skin, with an annular LED array, encryption engine, and physically unclonable function (PUF) circuit. The otoscope camera module features a narrow profile for ear, nose, and throat imaging, with an annular LED array.
1. A handheld medical diagnostic device comprising:
a plurality of sensor modules configured to collect physiological data from a user, the plurality of sensors including at least seven of: a high-magnification camera module, an otoscope camera module, a stethoscope module, an infrared thermometer sensor module, an electrocardiogram (EKG) sensor module, a pulse oximeter module, a body composition monitor module, a glucometer module, and/or a hematology analyzer module, wherein the hematology analyzer module is operable to use microfluidics to analyze cells in a blood sample, and wherein the high-magnification camera module and otoscope camera module are independent from each other;
a system-on-chip (SoC) processor configured to intelligently manage data from the plurality of sensors, prioritize information for user alerts, edge compute offloading, and cloud-based AI processing, and apply privacy-preserving techniques for secure data transmission and storage, wherein the SoC processor is capable of on-device machine learning tasks;
a wireless transceiver configured to transmit and/or receive data from the plurality of sensors to an edge compute node or a cloud computing platform based on computational needs, and receive processed data, insights, and recommendations from the edge compute node or the cloud computing platform;
a display configured to present data, insights, and recommendations to the user wherein the display includes a force-sensitive layer for enabling user input and navigation; and
a housing enclosing the at least seven sensors, the SoC processor, the wireless transceiver, a battery, and the display, the housing being ergonomically designed for handheld use and self-administration of tests by the user.
2. The device of claim 1 , wherein the high-magnification camera module comprises:
an image sensor with at least 300× magnification system to enable visualization of individual blood cells flowing through scleral microvasculature, for skin and ocular inspection; and
an annular LED array with adjustable brightness and color temperature surrounding the magnification stack.
3. The device of claim 2 , wherein the high-magnification camera module further comprises:
an embedded encryption engine for securing captured images and videos; and
a physically unclonable function (PUF) circuit for generating unique cryptographic keys.
4. The device of claim 1 , wherein the otoscope camera module comprises:
a camera sensor with a narrow profile of 8 mm thickness or less to enable insertion into the ear canal or nasal passage and a minimum protrusion of 1 cm from the surface of the external shell of the device to enable effective visualization of the interior of the nasal passage or ear canal while reducing external light distortion and thus ensuring uniform, precise, and repeatable imaging of ear, nose, and mouth/throat cavities;
a camera; and
an annular LED array with adjustable brightness and color temperature surrounding the lens stack.
5. The device of claim 1 , wherein the stethoscope module comprises:
a microphone; and
an integrated application-specific integrated circuit (ASIC) that performs bandpass filtering and amplification of the captured audio signals, and an analog encryption circuit for securing the audio data prior to digitization.
6. The device of claim 1 , wherein the thermometer sensor module comprises:
an infrared detector;
a precision thermistor for on-board thermal stabilization, calibration, and compensation;
a mirror to focus the infrared radiation onto the detector and help to block unwanted wavelengths;
an optical bandpass filter for optimal response convergence and immunity to environmental optical noise;
a metallic shield for electromagnetic isolation; and
a low-conductance shield for heat isolation and to minimize heat leakage from other areas of the device.
7. The device of claim 1 , wherein the electrocardiogram (EKG) sensor module comprises:
multiple surface electrodes and supporting electronics customized for personal use;
an instrumentation amplifier with high input impedance and low noise characteristics; and
an analog encryption circuit for securing the EKG data prior to digitization.
8. The device of claim 1 , wherein the pulse oximeter module comprises:
a light source for determining arterial oxygen saturation and pulse rate;
a time-multiplexed LED driver for alternating the red and infrared illumination sources;
a transimpedance amplifier for converting the photodetector current to a voltage signal; and
a lock-in amplifier for extracting the pulsatile signal components.
9. The device of claim 1 , wherein the body composition monitor module comprises:
bioimpedance analysis circuitry customized for personal use to characterize body fat percentage and muscle mass distribution;
a multi-frequency signal generator for applying excitation currents to the user's skin;
a set of instrumentation amplifiers for measuring the voltage responses; and
a machine learning model for estimating body fat percentage and muscle mass distribution from the bioimpedance data.
10. The device of claim 1 , wherein the glucometer module comprises:
a test strip port with an integrated strip ejection mechanism;
an electrochemical sensor for measuring the glucose concentration in the blood sample; and
a secure non-volatile memory for storing sensor calibration data.
11. The device of claim 1 , wherein the hematology analyzer module comprises:
a microfluidic circuit for sample dilution and flow control;
a multi-wavelength laser source for cell excitation;
a set of photomultiplier detectors for measuring the scattered light intensities; and
a digital signal processor for cell classification and counting.
12. The device of claim 1 , wherein the SoC processor further comprises:
a heterogeneous multicore architecture with low-power cores for real-time data processing and high-performance cores for running complex analytics and machine learning models; and
a hardware-based encryption engine for secure data handling.
13. The device of claim 1 , wherein the wireless transceiver is further configured to:
intelligently offload computationally intensive tasks to the edge compute node based on latency requirements, bandwidth availability, and the edge node's advertised capabilities; and
securely transmit anonymized and encrypted data to the cloud computing platform for deep learning and predictive analytics.
14. The device of claim 1 , wherein the display is further configured to:
present real-time alerts and notifications based on the processed sensor data; and
display contextual health insights and recommendations received from the edge compute node and the cloud computing platform.
15. The device of claim 1 , wherein the housing further comprises:
a built-in battery with a power management system for extending the device's operating time.
16. The device of claim 1 , further comprising an adaptive power management system configured to dynamically adjust power consumption based on usage patterns and sensor requirements, the adaptive power management system employing at least one of dynamic voltage and frequency scaling (DVFS), selective component activation, or energy harvesting from user motion or ambient light.
17. The device of claim 15 , further comprising a thermal management system which comprises at least one of a micro-thermoelectric cooler and a piezoelectric fan for active cooling of the plurality of sensors and the SoC processor.
18. The device of claim 16 , wherein the adaptive power management system is further configured to optimize battery life by monitoring sensor usage patterns and dynamically adjusting power delivery to individual sensor modules based on their respective power requirements.