Posture-Responsive Therapy Control via Sensor Feedback
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Medical devices that deliver therapy, such as electrical stimulation or therapeutic agents, face challenges in maintaining therapeutic efficacy due to changes in patient posture, which can affect the distance between electrodes and tissue compression, leading to variable symptom relief and side effects.
Innovation Solution
A medical device that detects patient posture states using sensors and adjusts therapy parameters or programs in real-time to optimize therapy delivery, allowing for automatic or user-directed adjustments to maintain effective treatment across different postures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If therapy is delivered continuously or periodically according to fixed parameters, then therapy delivery is simple and reliable, but therapeutic efficacy varies due to changes in patient posture
Solution Approach 1:
The system transitions from fixed therapy parameters to dynamic, real-time parameter adjustments based on detected posture changes. The medical device continuously monitors posture and automatically modifies therapy parameters (such as intensity, duration, or frequency) to maintain optimal therapeutic efficacy across different patient positions.
Solution Approach 2:
The system implements a feedback loop where posture detection information is fed back to the therapy delivery system. The medical device receives posture data from sensors, processes this information, and adjusts therapy parameters accordingly, creating a closed-loop control system that adapts to changing conditions.
2Reliability
If posture-responsive therapy adjustment is implemented, then therapeutic efficacy is maintained across different postures, but device complexity increases due to sensors and control systems
Solution Approach 1:
The system integrates multiple functions into a single medical device platform. The same device that delivers therapy also incorporates posture sensing, data processing, and automatic parameter adjustment capabilities, eliminating the need for separate external systems and reducing overall complexity despite added functionality.
Solution Approach 2:
The medical device performs self-adjustment based on posture detection without requiring manual intervention. The system automatically processes posture information and modifies therapy parameters autonomously, reducing the need for complex user interfaces or manual reconfiguration by the patient or clinician.
3Productivity
If real-time posture detection and therapy adjustment is performed, then therapy delivery is optimized for each posture state, but processing time and computational requirements increase
Solution Approach 1:
The system pre-establishes posture categories and corresponding optimal therapy parameters before actual use. When posture detection occurs, the system quickly matches the detected posture to pre-defined categories and retrieves appropriate parameters, avoiding time-consuming real-time calculations and enabling rapid adjustment.
Solution Approach 2:
The system optimizes processing by changing between different parameter representation formats. Posture data is converted to standardized posture codes or categories that map directly to therapy parameter sets, reducing computational complexity and processing time while maintaining optimization accuracy.
Data Source
AI summary
Patient efficacy inputs are received over a period of time during which posture-responsive therapy is delivered to the patient while the patient occupies a plurality of posture states. The patient inputs are correlated with the times at which the inputs were received, a sensed posture state of the patient, and a therapy program defining therapy delivery at each of the times the posture state was sensed. Posture-responsive therapy is adjusted based on the historical posture-responsive therapy information correlating the patient input, patient input time, sensed posture state, and therapy program.