Handheld ECG Device With Four Electrodes for Portable Monitoring
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Solution Overview
Problem
Conventional ECG measurement systems are cumbersome and uncomfortable for patients to use outside of a clinical setting, requiring multiple electrodes that need to be repeatedly attached and removed, causing discomfort and logistical challenges, especially for mobile patients.
Innovation Solution
A handheld ECG data acquisition device with four electrodes that can be easily used by patients to obtain 12 standard lead measurements and precordial traces, featuring a compact design for storage and a wireless communication link to transmit data, including a compartment for medication and a common mode cancellation signal generation to reduce noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional ECG electrodes are attached to the patient's body to obtain standard measurements, then measurement accuracy is improved, but patient comfort and ease of use deteriorate due to repeated attachment and removal requirements
Solution Approach 1:
The handheld device enables patients to perform ECG measurements independently without requiring trained personnel or complex electrode attachment procedures. The device incorporates automatic electrode placement guidance and simplified operation interfaces that allow patients to conduct measurements alone, eliminating the need for professional assistance while maintaining measurement quality.
Solution Approach 2:
The ECG measurement system is divided into modular components: a handheld measurement device, separate electrode units, and a processing/display system. This segmentation allows the electrodes to be easily attached and removed from the patient's body without affecting the functionality of the main handheld device, improving convenience while maintaining measurement accuracy through the modular design.
2Adaptability or versatility
If multiple electrodes are used to obtain complete 12-lead ECG recordings, then measurement comprehensiveness is improved, but device complexity and logistical burden increase
Solution Approach 1:
The handheld device is designed as a universal platform that can perform multiple ECG measurement functions using a standardized set of electrodes. The device can conduct various ECG lead configurations (standard 12-lead, single-lead, dual-lead) by repositioning electrodes or changing measurement parameters, eliminating the need for multiple specialized devices while maintaining comprehensive measurement capabilities.
Solution Approach 2:
The device combines multiple functions including electrode placement guidance, signal acquisition, real-time ECG display, storage, and wireless data transmission into a single integrated handheld unit. This merging of functions reduces the number of separate components needed and simplifies the overall system while maintaining comprehensive ECG measurement capabilities.
3Ease of operation
If adhesive electrodes are used for repeated measurements, then ease of application is improved, but reliability deteriorates due to adhesive failure after small number of measurements
Solution Approach 1:
The system employs disposable electrode units that are designed for single-use or limited-use applications. These electrodes incorporate reliable connection mechanisms that maintain electrical contact throughout the measurement process, and the disposable nature eliminates concerns about adhesive degradation over time. Each electrode unit is fresh and reliable for its intended measurement session.
Solution Approach 2:
The device includes automated electrode placement guidance and pre-positioning features that ensure correct electrode placement before measurements begin. The system guides patients through the placement process and confirms proper contact, ensuring reliable measurements from the first use and eliminating the need for repeated adjustments or replacements due to placement issues.
4Ease of operation
If a compact handheld device is designed for portability, then ease of carrying is improved, but measurement capability and accuracy may deteriorate
Solution Approach 1:
The device utilizes wireless communication to extend its functional reach beyond physical limitations. By transmitting measurement data wirelessly to external processing systems, the handheld device can perform accurate ECG measurements without requiring bulky local processing units or display screens, maintaining measurement precision while achieving compact portability.
Solution Approach 2:
The system introduces wireless communication as an intermediary between the compact handheld measurement device and the external processing/display system. This intermediary allows the small handheld unit to offload computational and display functions remotely, enabling accurate measurements with minimal local hardware while maintaining full measurement capability through the wireless connection.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables patients to conveniently and comfortably measure ECG recordings without trained personnel, reducing discomfort and logistical issues, while the compact design ensures the device is always carried, and the wireless link ensures timely data transmission to medical personnel.
Implementation Method 1
a controller that measures signals between the electrodes and provides those signals to another device to generate an ECG recording
Implementation Method 2
a circuit that generates a common mode cancellation signal from signals on the second, third, and fourth electrodes and couples the common mode cancellation signal to the first electrode while the controller is measuring said signals
Data Source
AI summary
An apparatus for generating ECG recordings and a method for using the same are disclosed. The apparatus includes a handheld device having four electrodes on an outer surface thereof, the handheld device having an extended configuration and a storage configuration. The apparatus also includes a controller configured to measure signals between the electrodes to provide signals that are used to generate an ECG recording selected from the group consisting of standard lead traces and precordial traces. When the handheld device is in the extended configuration and the first and second electrodes contact a first hand of a patient such that the first and second electrodes contact different locations on the first hand, the third electrode is in contact with a location on the patient's other hand and the fourth electrode contacts a point on the patient's body that depends on the particular trace being measured.