Localized Alarm Projection for Faster Patient Monitoring Response

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Solution Overview

Problem

The chaotic environment caused by multiple, non-communicating medical devices with separate controls and alarms in patient monitoring settings can distract caregivers and disturb patients, especially in critical areas like surgery and recovery rooms.

Innovation Solution

A system utilizing localized projection of audible noises through coordinated speakers, controlled by a sound localization controller, to intuitively direct caregivers to the source of patient indicators, adjusting sound parameters like timing, intensity, and frequency to simulate the origination location of alarms.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If multiple separate medical devices with individual alarms are used to monitor patients, then comprehensive patient monitoring is achieved, but caregiver distraction and patient disturbance increase

Engineering Contradiction:

Improvepatient monitoringVSAvoidcaregiver distraction

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent combines multiple alarm systems into a single integrated alarm that projects sound locally at the patient's bedside. Instead of having separate devices with independent alarms, the system merges alarm functions so that all alerts converge at one location, eliminating the need for caregivers to search for alarm sources and reducing unnecessary movement and distraction.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent introduces an intermediary device (such as a smart speaker or audio projection system) that receives alarm signals from multiple medical devices and reprojects them locally at the patient's bedside. This intermediary acts as a mediator between the monitoring devices and caregivers, consolidating alarm information and preventing caregiver distraction while maintaining comprehensive monitoring.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If multiple separate medical devices with individual alarms are used to monitor patients, then comprehensive patient monitoring is achieved, but patient disturbance increases

Engineering Contradiction:

Improvepatient monitoringVSAvoidpatient disturbance

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent merges multiple alarm sounds into a single localized projection at the bedside, preventing the chaotic environment created by multiple separate alarms. This consolidation reduces patient disturbance while maintaining the ability to monitor all patient parameters comprehensively through the integrated system.

Inventive Principle:

Principle #5Merging (Combining)

3Device complexity

If traditional alarm systems are used without localized projection, then simple alarm functionality is maintained, but caregiver response time increases

Engineering Contradiction:

Improvealarm systemVSAvoidcaregiver response time

Core Design Contradiction:

Device complexityVSLoss of time

Solution Approach 1:

The patent replaces traditional mechanical alarm systems (speakers distributed throughout the room) with an acoustic projection system that creates localized sound fields. This substitution uses advanced audio processing techniques to project alarm sounds directly at the patient's bedside, providing intuitive spatial cues that dramatically reduce caregiver response time without requiring complex system architecture.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

4Reliability

If distributed speakers are used throughout the room, then alarm coverage is improved, but sound localization for caregivers becomes difficult

Engineering Contradiction:

Improvealarm coverageVSAvoidsound localization

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

Instead of distributing speakers throughout the room and expecting caregivers to locate the alarm source, the patent inverts the approach by projecting the alarm sound locally at the patient's bedside. This inversion creates intuitive spatial cues where the alarm location is self-evident, eliminating the confusion of determining which device is alarming while maintaining comprehensive coverage.

Inventive Principle:

Principle #13The other way round (Inversion)

Data Source

PatentUS20260011223A1Localized projection of audible noises in medical settings

Publication Date: 2026.01.08 MASIMO CORP

AI summary

A localized sound projection system can coordinate the sounds of speakers to simulate the placement of an auditory cue in a 3D space. The system can include a plurality of speakers configured to output auditory signals and a sound localization controller configured to control the plurality of speakers to coordinate the auditory signals to simulate an origination location of a patient alarm. The sound localization controller can determine adjusted auditory signals and control a plurality of speakers to output the plurality of adjusted auditory signals. A method for dynamically controlling speaker settings in a medical environment can include determining volume settings corresponding to a speaker, monitoring a level of ambient noise corresponding to a room of a patient, controlling the volume settings of the speaker to reduce or increase a sound level output of a speaker.