Sleep Therapy System for Fluid Accumulation
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Solution Overview
Problem
Current sleep therapy systems for sleep apnea do not effectively address fluid accumulation and fluid shifts caused by sleep position changes, particularly in patients with comorbidities like heart failure and pulmonary diseases, which can exacerbate physiological stress and complications.
Innovation Solution
A sleep therapy system that includes sensors for detecting physiological parameters, a detection system for identifying fluid accumulation, and a feedback system to instruct changes in sleep position, using multiple sensors such as bioimpedance, blood oxygen saturation, and breathing sensors to adapt therapy and reduce fluid shifts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If continuous positive pressure therapy (PAP/AVAPS) is used to treat sleep apnea, then airflow is rebalanced and apnea events are reduced, but physiological stress increases and fluid accumulation worsens
Solution Approach 1:
The system continuously monitors physiological parameters (respiratory flow, oxygen saturation, heart rate, body position) and uses this feedback to dynamically adjust therapy delivery. The controller modifies positive pressure support in real-time based on detected apnea events, oxygen desaturation levels, and positional information, reducing unnecessary pressure exposure and associated fluid accumulation while maintaining effective apnea treatment.
Solution Approach 2:
The therapy system transitions from continuous static positive pressure to dynamic adaptive pressure support. The AVAPS device adjusts pressure levels, tidal volume, and support duration based on real-time physiological conditions, allowing the therapy to be more responsive to actual respiratory needs and reducing unnecessary physiological stress during non-apnea periods.
2Reliability
If positional therapy is used to control sleep position, then sleep apnea events are reduced, but the system does not address fluid accumulation caused by body position changes
Solution Approach 1:
The system integrates multiple therapeutic functions into a single unified platform. The sleep position control device not only detects and corrects supine positioning to reduce apnea events but also monitors physiological parameters (respiratory flow, oxygen saturation, heart rate) and coordinates with the AVAPS device to address fluid accumulation and respiratory support needs, making the system versatile for managing multiple comorbidities simultaneously.
Solution Approach 2:
The patent combines positional therapy, physiological monitoring, and adaptive ventilation support into an integrated system. The sleep position control device merges mechanical position sensing, feedback control for position correction, and communication with the AVAPS device to create a coordinated multi-functional therapy system that addresses both positional apnea and fluid-related respiratory issues.
3Reliability
If multiple sensors are added to detect fluid accumulation and adapt therapy, then treatment effectiveness for comorbidities improves, but device complexity increases
Solution Approach 1:
The AVAPS device serves multiple functions: it provides adaptive ventilation support, integrates physiological monitoring capabilities, communicates with the sleep position control device, and delivers coordinated therapy. This multi-functionality reduces the need for completely separate monitoring and control systems, managing complexity through consolidation while maintaining comprehensive monitoring for fluid accumulation detection and therapy adaptation.
Data Source
AI summary
A sleep therapy system comprises a sensor arrangement for detecting physiological parameters of a subject, a detection system for detecting a sleeping position of the subject and an alert system for instructing a change in sleep position of the subject. From the monitored physiological parameters, fluid accumulation is identified in a region of the body of the subject. The alert system is controlled to instruct a change in sleep position thereby to reverse the fluid accumulation.