Modifiable Sonification for Emergency Oxygen Saturation Thresholds
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional medical devices provide inadequate real-time audio feedback during emergency medical treatments, particularly in critical procedures like rapid sequence intubation, leading to delayed responses due to minimal pitch and intensity changes in sound variations, which can be hazardous and life-threatening.
Innovation Solution
A medical device with modifiable sonifications that maps oxygen saturation values to pulse tone pitch logarithmically, using distinct audio fonts to indicate clinically significant thresholds and signal quality, allowing medical personnel to respond promptly to critical changes without visual monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional linear mapping is used to map oxygen saturation values to pulse tone pitch, then the device complexity is low, but the measurement precision of critical threshold detection is insufficient
Solution Approach 1:
The patent transforms the linear mapping relationship between oxygen saturation values and pulse tone pitch into a logarithmic mapping relationship. This parameter change enhances the precision of threshold detection by creating more distinguishable pitch differences at critical saturation levels, while the mapping relationship remains computationally manageable through standard logarithmic functions.
Solution Approach 2:
The patent introduces a new dimension to the audio feedback by incorporating distinct audio fonts (different timbres or waveforms) in addition to pitch changes. This dimensional enhancement allows for more precise threshold detection through multiple auditory cues simultaneously, improving measurement precision without significantly increasing device complexity.
2Reliability
If minimal pitch and intensity changes are used in sound variations, then the device complexity is low, but the reliability of real-time feedback is insufficient
Solution Approach 1:
The patent implements significant pitch and intensity changes in the audio feedback signals to improve reliability. By mapping oxygen saturation values to substantially different pitch levels and using distinct audio fonts for different thresholds, the system ensures that critical changes are immediately recognizable, thereby enhancing feedback reliability.
Solution Approach 2:
The patent segments the audio feedback into distinct categories based on oxygen saturation thresholds. Different audio fonts and pitch ranges are assigned to different threshold levels (e.g., normal, warning, critical), making it easier for medical personnel to quickly assess patient status without being overwhelmed by continuous variations.
3Measurement precision
If distinct audio fonts are used to indicate clinically significant thresholds, then the measurement precision is improved, but the device complexity increases
Solution Approach 1:
The patent uses distinct audio fonts (different timbres, waveforms, or instrument types) to indicate different clinically significant thresholds. This parameter change in audio characteristics provides clear, unambiguous signals for threshold crossings, improving measurement precision while using standard audio synthesis capabilities.
Data Source
AI summary
A medical device configured to provide a real-time audio feedback for use during administration of an emergency medical treatment of a patient by medical personnel is disclosed. The medical device may comprise a memory, and a processor coupled to the memory. The processor may be configured to perform operations. The operations may include analyzing measurement data collected from the patient. The operations may also include associating a particular audio font based on a characteristic of the measurement data. The operations may further include identifying, based on the characteristic of the measurement data, one or more clinically meaningful thresholds in the measurement data. The operations may also include generating an audible change in the particular audio font to reflect whether a particular characteristic of the measurement data has crossed a clinically meaningful threshold of the one or more clinically-meaningful thresholds.