Vestibular Implant Dynamic Stimulation Control
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Solution Overview
Problem
Current medical devices for vestibular system stimulation lack the ability to dynamically adjust electrical stimulation based on patient movement and response, leading to inefficient therapy and potential unnecessary stimulation, which can affect the balance and reduce the effectiveness of treatment for vestibular disorders.
Innovation Solution
An implantable medical device system that includes a gyroscope, implantable sensors, and processing circuitry to detect head movements and electrical signals, determining an angular shift frequency and evoked electrical signals to select an appropriate operating mode for transmitting electrical stimulation signals to the vestibular organ, thereby adjusting the stimulation based on patient activity and response.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If continuous electrical stimulation is delivered to the vestibular organ, then the patient's balance may be maintained, but energy is wasted and the device's power lifespan is reduced
Solution Approach 1:
The patent implements dynamic adjustment of electrical stimulation parameters based on real-time detection of head movements and patient responses. The stimulation frequency, amplitude, and duration are continuously adapted to match the patient's current activity level and vestibular system state, delivering stimulation only when and where needed rather than continuously
Solution Approach 2:
The system incorporates feedback loops where implantable sensors detect electrical signals from the vestibular organ in response to stimulation and head movements. This feedback information is processed to determine the patient's current state and adjust subsequent stimulation parameters, creating a closed-loop control system that optimizes energy usage while maintaining therapeutic effectiveness
2Reliability
If electrical stimulation parameters are adjusted dynamically based on patient movement, then therapy effectiveness is improved, but device complexity increases
Solution Approach 1:
The implantable medical device is designed as a multi-functional integrated system that combines gyroscope sensors for head movement detection, electrical stimulation delivery capabilities, and implantable sensors for detecting vestibular organ responses. This universal device performs multiple functions (sensing, processing, stimulating) within a single implantable unit, managing complexity through integration rather than separate components
Solution Approach 2:
The system automatically detects head movements via the gyroscope and adjusts stimulation parameters based on detected movement characteristics and vestibular organ responses, eliminating the need for manual parameter adjustment by clinicians or patients. The device serves itself by autonomously optimizing therapy parameters in real-time based on sensed physiological data
3Ease of operation
If electrical stimulation is delivered without detecting patient response, then the device operation is simpler, but the stimulation may be unnecessary or ineffective
Solution Approach 1:
The patent employs feedback mechanisms where implantable sensors detect electrical signals generated by the vestibular organ in response to electrical stimulation and head movements. This feedback information is processed to determine whether the patient is experiencing vertigo or other vestibular symptoms, allowing the system to adjust or terminate stimulation when it is no longer needed, thereby improving effectiveness while maintaining operational simplicity
Solution Approach 2:
The system replaces manual assessment and adjustment mechanisms with automated electronic detection and control. Instead of requiring clinicians to manually assess patient response and adjust parameters, the patent uses electronic sensors to automatically detect vestibular organ electrical signals and process this data to determine appropriate stimulation parameters, simplifying operation while enhancing reliability
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
This approach enhances the efficacy of vestibular stimulation by reducing unnecessary stimulation, extending the device's power lifespan, and improving balance by dynamically matching stimulation with patient activity, ensuring timely and effective symptom relief.
Implementation Method 1
a gyroscope configured to detect movements of a head of a patient
Implementation Method 2
an implantable sensor configured to detect electrical signals in tissue of the patient
Implementation Method 3
the vestibular implant is configured to transmit an electrical stimulation signal to one or more regions of a vestibular organ
Data Source
AI summary
A system comprising a memory, a gyroscope configured to detect movements of a head of a patient, an implantable sensor configured to detect electrical signals in tissue of the patient, a vestibular implant, and processing circuitry coupled to the memory. The processing circuitry configured: to determine, based on the detected movements of the head, an angular shift frequency of the head and an evoked electrical signal, and select, based on determined characteristics comprising the angular shift frequency and the evoked electrical signal, an operating mode for the vestibular implant from a plurality of operating modes stored in the memory, wherein the vestibular implant is configured to transmit an electrical stimulation signal to one or more regions of the vestibular organ based on the selected operating mode.