Microstimulator Telemetry with Self-Powered Battery
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Solution Overview
Problem
Existing implantable microstimulators face challenges in providing a bi-directional telemetry system with a self-contained or rechargeable battery that allows for extended operation, flexible placement, and efficient control and monitoring, particularly for treating neurological disorders and muscle-related issues.
Innovation Solution
A battery-powered microstimulator with a self-contained power source, such as a primary or rechargeable battery, and alternative energy sources like super capacitors, nuclear batteries, or bioenergy sources, combined with a bi-directional telemetry system for communication and data transmission, enabling independent operation and remote control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a self-contained battery is used to power the microstimulator, then the device can operate independently without external power, but the device size and weight increase
Solution Approach 1:
The microstimulator is equipped with a self-contained battery that enables the device to power itself independently without requiring external power sources. The battery is integrated into the device housing, allowing the microstimulator to function autonomously for extended periods, thereby resolving the contradiction between independent operation and device portability.
2Ease of operation
If a bi-directional telemetry system is added for remote communication, then monitoring and control capabilities are enhanced, but device complexity increases
Solution Approach 1:
The telemetry system is designed to perform multiple functions including bidirectional communication, data transmission, device programming, and monitoring. By integrating these diverse functions into a single unified system, the patent reduces overall device complexity while maintaining enhanced remote control and monitoring capabilities.
3Duration of action of moving object
If alternative energy sources like super capacitors or nuclear batteries are used, then energy storage capacity is extended, but manufacturing complexity and reliability concerns increase
Solution Approach 1:
The power system is segmented into multiple energy storage components including a primary battery for base power supply and a super capacitor for energy buffering and peak power delivery. This segmentation allows each component to be optimized independently, simplifying manufacturing while extending overall operational duration and providing redundant power sources.
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 solution provides a reliable, long-lasting, and controllable microstimulator that can operate independently, reducing the need for continuous external power and enhancing monitoring and control capabilities for treating various neurological and muscle-related disorders.
Implementation Method 1
an induction coil receives energy from outside the body
Implementation Method 2
an electrolytic capacitor electrode to store electrical energy in the electrode when exposed to body fluids
Data Source
AI summary
An implantable microstimulator configured to be implanted beneath a patient's skin for tissue stimulation employs a bi-directional RF telemetry link for allowing data-containing signals to be sent to and from the implantable microstimulator from at least two external devices. Further, a separate electromagnetic inductive telemetry link allows data containing signals to be sent to the implantable microstimulator from at least one of the two external devices. The RF bidirectional telemetry link allows the microstimulator to inform the patient or clinician regarding the status of the microstimulator device, including the charge level of a power source, and stimulation parameter states. The microstimulator has a cylindrical hermetically sealed case having a length no greater than about 27 mm and a diameter no greater than about 3.3 mm. A reference electrode is located on one end of the case and an active electrode is located on the other end of the case.