Memory Programming Delay for Implantable Medical Devices
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Solution Overview
Problem
Implantable medical devices face challenges in optimizing battery longevity and reducing size due to high power consumption during memory operations, particularly in small form factor devices where storage capacity is limited.
Innovation Solution
Implementing a memory device with a programming delay mechanism that adjusts the timing of writing data to memory elements based on battery parameters, allowing for optimized power consumption and reduced battery size by incorporating a state machine that computes and applies a programming delay value specific to the battery's capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If conventional memory programming operations are used in implantable medical devices, then data storage functionality is achieved, but battery size and power consumption increase
Solution Approach 1:
The patent implements dynamic control of memory programming operations by adjusting programming parameters and timing based on real-time battery status. The processor monitors battery voltage and current consumption, then dynamically modifies programming pulse widths, amplitudes, and intervals to optimize power usage while maintaining data storage functionality. This dynamic adaptation allows the device to operate efficiently with smaller batteries by preventing excessive power draw during memory programming operations.
2Productivity
If memory programming speed is increased to improve productivity, then data storage efficiency improves, but power consumption and current drain increase
Solution Approach 1:
The patent employs periodic programming operations with strategically timed intervals between programming pulses. Instead of continuous high-speed programming, the system uses repeated programming cycles with controlled delays, allowing the battery to recover between high-current events. This periodic approach maintains data storage functionality while reducing peak current demands and average power consumption, enabling faster effective programming speeds without proportionally increasing power draw.
3Volume of stationary object
If battery capacity is reduced to miniaturize the implantable device, then device size decreases, but operational duration and reliability are compromised
Solution Approach 1:
The patent implements comprehensive parameter optimization across multiple system components to extend battery operational life. This includes adjusting memory programming voltage levels, timing parameters, and pulse widths; optimizing processor sleep modes and wake intervals; and tuning radio frequency transmission power and duty cycles. By simultaneously optimizing these parameters, the system achieves extended operational duration from smaller batteries, as the cumulative effect of minor efficiency gains across multiple subsystems significantly reduces overall power consumption.
Solution Approach 2:
The system incorporates continuous feedback mechanisms where the processor monitors battery voltage, current draw, and operational status in real-time. Based on this feedback, the system dynamically adjusts programming operations, transmission power, and processor activity to match actual power availability. This closed-loop control prevents deep discharge conditions, extends battery life, and ensures reliable operation throughout the battery's capacity range, allowing smaller batteries to meet operational requirements.
Data Source
AI summary
An implantable medical device have an associated memory device is disclosed. The implantable medical device utilizes techniques for optimizing one or more embedded operations of the memory device, such operations including programming, reading or erasing data. The techniques for optimizing the embedded operations include controlling the operations as a function of an energy source of the implantable medical device.