Wearable ECG Lead Alignment Using Posture and Orientation Sensing
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Solution Overview
Problem
Existing wearable or attachable electrocardiographs face challenges in accurately aligning electrocardiogram leads due to the difficulty in achieving standard measurement directions, especially when used by non-medical personnel, leading to incorrect attachments and suboptimal signal acquisition.
Innovation Solution
An electrocardiogram lead guide system that utilizes sensors, such as acceleration and gyro sensors, to detect the attachment direction of an electrocardiograph and transmit this information to a user terminal via wireless communication, providing guide information to ensure accurate alignment of the electrocardiograph leads based on posture and angle data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a wearable electrocardiograph is used without a separate lead line, then portability and ease of use are improved, but accurate alignment of measurement directions becomes difficult to achieve
Solution Approach 1:
The system performs preliminary detection of the electrocardiograph's attachment direction using sensors before measurement begins. The processing unit calculates the attachment direction based on sensor data and provides guidance information to the user, allowing correction of attachment orientation before actual ECG measurement starts, thus ensuring both ease of use and measurement accuracy
Solution Approach 2:
The system continuously monitors attachment direction through sensors and provides real-time feedback to the user via the communication unit. The guidance information indicates whether the attachment direction is correct or needs adjustment, enabling users to self-correct without medical expertise while maintaining measurement precision
2Ease of manufacture
If the electrocardiograph is fixed in a specific direction, then manufacturing and design are simplified, but adaptability to different measurement requirements is reduced
Solution Approach 1:
The system transitions from a static fixed-direction design to a dynamic adaptive system. Sensors detect the actual attachment direction in real-time, and the processing unit dynamically adjusts the measurement approach by calculating the correct lead directions based on the detected orientation, enabling the same device to adapt to various attachment scenarios without complex mechanical adjustments
Solution Approach 2:
The system changes measurement parameters dynamically based on detected attachment conditions. By detecting attachment direction and calculating appropriate lead directions (Lead I, II, III, aVR, aVL, aVF, V1-V6), the system adjusts measurement parameters to match the actual attachment orientation, providing measurement flexibility while maintaining a simple fixed internal structure
3Measurement precision
If sensors are added to detect attachment direction, then measurement accuracy is improved, but device complexity increases
Solution Approach 1:
The sensor unit serves multiple functions: detecting attachment direction, determining device orientation, and providing data for calculating lead directions. The processing unit performs multiple calculations based on sensor data to determine various lead directions (I, II, III, aVR, aVL, aVF, V1-V6) from a single sensor set, reducing overall system complexity through functional integration
Solution Approach 2:
The system combines the sensor unit, processing unit, and communication unit into an integrated wearable electrocardiograph. The sensors are embedded within the device housing, and the processing unit combines sensor data with ECG signal processing, merging multiple functions into a compact unified system that minimizes complexity while maintaining detection accuracy
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 non-medical users to accurately attach electrocardiographs in the intended lead direction, ensuring reliable electrocardiogram signal acquisition by guiding the attachment process through a user terminal.
Implementation Method 1
The sensor unit may acquire the position and angle information of the electrocardiograph using an acceleration sensor and a gyro sensor.
Implementation Method 2
The sensor unit may acquire the position and angle information of the electrocardiograph using an acceleration sensor and a gyro sensor.
Data Source
AI summary
Provided is an electrocardiogram lead guide system. The electrocardiogram lead guide system may include: an electrocardiograph attached to a part of a body of a patient and acquiring posture information and electrocardiogram signals using a plurality of sensors; and a user terminal providing guide information for guiding the attachment direction of the electrocardiograph based on the posture information.