Implantable Pulse Generator Battery Life Control
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Solution Overview
Problem
Implantable pulse generators used in treating cardiovascular and neurological disorders face challenges such as battery depletion, leading to abrupt cessation of therapy and loss of data, which can result in adverse effects like increased blood pressure and heart failure.
Innovation Solution
A method and system for controlling the energy output of an implantable pulse generator to prolong battery life by monitoring and adjusting the energy level, changing the therapy regimen to reduce energy consumption, and ensuring a controlled shutdown to prevent data loss, while maintaining adequate baroreflex response.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the implantable pulse generator operates at full power to provide adequate therapy, then the therapeutic effect is maintained, but the battery depletes rapidly causing abrupt cessation of therapy
Solution Approach 1:
The pulse generator dynamically adjusts its power output based on real-time battery status. When battery voltage drops below a threshold, the system automatically reduces power consumption by lowering stimulation amplitude or duty cycle, ensuring continuous therapy throughout battery life rather than abrupt cessation
Solution Approach 2:
The system changes operational parameters (stimulation voltage, current, or pulse width) in response to battery depletion. By modifying these parameters, the device maintains therapeutic efficacy at reduced power levels, extending the functional duration of the battery
2Loss of energy
If the battery is allowed to deplete naturally, then energy consumption is minimized, but therapy stops abruptly causing adverse effects like increased blood pressure
Solution Approach 1:
The system performs preliminary monitoring of battery voltage and predicts depletion timing. Before complete exhaustion, it initiates a gradual reduction in therapy intensity or alerts the patient/physician, allowing for planned battery replacement while maintaining blood pressure control
Solution Approach 2:
The device continuously monitors battery status and provides feedback to adjust therapy delivery. This closed-loop system ensures that blood pressure control is maintained by adapting stimulation parameters to current battery conditions, preventing abrupt therapy cessation
3Duration of action of stationary object
If the battery energy is reduced to extend battery life, then battery longevity is improved, but the electrical output may become insufficient for adequate nerve stimulation
Solution Approach 1:
The system changes stimulation parameters (amplitude, pulse width, frequency) to optimize the balance between power delivery and battery conservation. By adjusting these parameters dynamically, adequate nerve stimulation is maintained at lower power levels, extending battery longevity without compromising therapeutic effect
Data Source
AI summary
Methods, devices, and systems for controlling an implantable pulse generator for activation of a nerve or receptor are provided. In particular, the method, devices, and systems embodying features of the present invention control the energy output of a battery in an implantable pulse generator for stimulation of the baroreflex system of the patient.