Acoustic User Interface for Insulin Pump Feedback
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Solution Overview
Problem
There is a need for improved methods to provide unambiguous feedback to users interacting with body-mounted medical devices, such as insulin pumps, especially when the device is not easily accessible and may be covered by clothing, to prevent hazardous misinterpretation of feedback.
Innovation Solution
The method involves generating specific acoustic signals, including descending and ascending halftones, alternating tritones, and tone sequences with varying durations and frequencies, to guide users in interactions with insulin pumps, ensuring clear confirmation of tasks and modes, and preventing erroneous interactions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional auditory notifications are used, then the device can provide feedback, but the feedback becomes ambiguous and potentially hazardous when the device is body-mounted and covered by clothing
Solution Approach 1:
The patent applies parameter changes by varying multiple acoustic parameters simultaneously - pitch (using halftones and tritones), duration (0.025s to 5s), and frequency (1500Hz to 4000Hz) - to create distinct acoustic signatures for different user interactions. This multi-dimensional parameter encoding ensures that even when the device is covered, users can reliably distinguish between different feedback types through careful acoustic design.
Solution Approach 2:
The patent segments the acoustic feedback into distinct, recognizable patterns - descending halftones for one type of interaction, ascending halftones for another, alternating tritones for a third type, and specific tone sequences for confirmation. This segmentation of acoustic signals into meaningful, distinguishable units prevents ambiguity and enables reliable interpretation even in noisy or obscured conditions.
2Ease of operation
If simple auditory signals are used, then the device complexity is reduced, but the user guidance becomes insufficient for body-mounted devices
Solution Approach 1:
The patent implements comprehensive feedback mechanisms with five distinct acoustic signal types that provide detailed information about device state and user interaction success. The feedback includes confirmation signals, error signals, and navigation guidance, creating a rich feedback loop that enhances ease of operation while managing the inherent complexity through structured signal design.
Solution Approach 2:
The patent adds dimensional complexity to acoustic signals by incorporating musical theory concepts - halftones (5 semitones), tritones (3 semitones), and specific frequency ranges (1500Hz to 4000Hz). This dimensional enrichment of acoustic information provides superior user guidance without requiring additional physical components, effectively using information density to overcome the limitations of simple auditory feedback.
3Ease of operation
If the device is body-mounted and covered by clothing, then the device becomes more convenient for users, but the acoustic feedback becomes harder to detect
Solution Approach 1:
The patent optimizes acoustic parameters for penetrability and detectability through clothing - using frequencies in the 1500Hz to 4000Hz range which can penetrate fabric better than lower frequencies, and varying durations from 0.025s to 5s to ensure detection even when attenuated. This parameter optimization maintains ease of operation while compensating for the reduced detectability caused by body-mounting and clothing coverage.
Solution Approach 2:
The patent utilizes acoustic vibration and sound wave propagation to deliver feedback through the body and clothing layers. By designing signals with specific frequencies and durations that create detectable vibrations and acoustic patterns, the system maintains effective communication even when the device is covered, using the body itself as part of the transmission medium.
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 acoustic signals provide clear and unambiguous feedback, even in noisy environments, enhancing user safety by ensuring correct interaction with insulin pumps, particularly when the device is body-mounted and covered.
Implementation Method 1
For generating auditory signals, in particular piezoelectric elements or transducers have been used
Implementation Method 2
a piezoelectric element or a magnetic element, which is typically disposed within a resonance chamber (i.e., a cavity defined by interior surfaces that reflect acoustic/sound waves) in order to amplify the sound generated by the element
Data Source
AI summary
The present invention relates to a method for guiding a user in interaction with an insulin pump comprising providing in response to a user interaction at least one of (i) a first acoustic signal comprising at least five descending halftones, wherein the duration of each tone is independently selected from a range of from 0.025 s to 5 s; (ii) a second acoustic signal comprising at least five ascending halftones, wherein the duration of each tone is independently selected from a range of from 0.025 s to 5 s; (iii) a third acoustic signal comprising at least seven ascending halftones, wherein the duration of each tone is independently selected from a range of from 0.025 s to 5 s; (iv) a fourth acoustic signal comprising at least two alternating tritones, wherein the duration of each tone is independently selected from a range of from 0.025 s to 5 s; (v) a fifth acoustic signal of four tones with a duration of from 0.025 s to 0.5 s, followed by a single tone with a duration of at least twofold of any one of the preceding four tones, wherein at least one tone of the acoustic signals of (i) to (v) has a frequency in the range of from 1500 Hz to 4000 Hz, in an embodiment of from 1700 Hz to 3800 Hz. Further, the present invention relates to devices, computer program products, and uses related thereto.