Implantable Sensor Power Control via Movement Detection
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Solution Overview
Problem
There is a need for systems, methods, and devices to facilitate patient rehabilitation from orthopedic surgery, such as joint replacement surgery, due to significant variations in each joint replacement procedure and challenges in returning to activities post-surgery.
Innovation Solution
A surgical implant comprising an accelerometer, a sensor, and a processor that receives data from the accelerometer to determine the type of movement of the implant, and adjusts power to the sensor accordingly, allowing for efficient data collection and analysis to support rehabilitation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the sensor remains continuously powered on to monitor all movements, then measurement precision and reliability are improved, but energy consumption increases
Solution Approach 1:
The sensor is activated periodically based on detected movement thresholds rather than continuously. The system monitors accelerometer data and only activates the sensor when movement exceeding a threshold is detected, reducing energy consumption while maintaining detection reliability for significant movements.
Solution Approach 2:
The sensor power state is dynamically adjusted based on real-time movement detection. The system transitions between sensor active and inactive states according to detected movement patterns, allowing the sensor to be on only when needed based on current activity levels.
2Measurement precision
If multiple sensors are activated simultaneously to collect comprehensive data, then measurement precision is improved, but device complexity and power consumption increase
Solution Approach 1:
The sensor system is segmented into multiple sensors with different functions. The accelerometer continuously monitors for movement thresholds, while other sensors (gyroscope, temperature, load) are activated only when needed based on the acceleration data, reducing overall system complexity while maintaining precision when required.
Solution Approach 2:
Instead of activating all sensors continuously, the system uses partial action by activating only the necessary sensors based on detected movement type and intensity. This reduces power consumption and simplifies the active sensor configuration while maintaining sufficient measurement precision for rehabilitation monitoring.
3Productivity
If sensor data is processed continuously to provide real-time feedback, then productivity and rehabilitation monitoring are improved, but energy consumption and processing requirements increase
Solution Approach 1:
The system performs preliminary filtering and processing of sensor data locally at the implant to identify movement thresholds and patterns before transmitting data externally. This preliminary action reduces the amount of data requiring external processing and transmission, lowering overall energy consumption while maintaining monitoring productivity.
Solution Approach 2:
The system extracts and transmits only the most critical movement data and patterns to external systems rather than continuously transmitting all sensor data. This extraction approach reduces communication energy consumption and processing requirements while maintaining effective rehabilitation monitoring through selective data sharing.
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
The system effectively measures and adjusts sensor power based on movement type, enhancing data collection and supporting improved surgical outcomes and rehabilitation processes.
Implementation Method 1
an accelerometer; a sensor; and a processor. The processor may be configured to: receive a first data from the accelerometer based on a movement of the surgical implant
Data Source
AI summary
The present disclosure generally relates to a surgical implant comprising: an accelerometer; a sensor; and a processor. The processor configured to: receive a first data from the accelerometer based on a movement of the surgical implant; determine a type of movement of the surgical implant based on the first data; and adjust power to the sensor based on the type of movement of the surgical implant.