CPR Device Tilt Sensor for Positioning Accuracy

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Solution Overview

Problem

CPR chest compression machines face challenges in maintaining effective compressions due to patient shifting or tilting within the device, which can lead to improper positioning and reduced effectiveness, especially during emergencies like in ambulances or on flexible mattresses.

Innovation Solution

A medical device equipped with an external chest compressor and a tilt module that senses tilt events, providing visual or auditory alerts to ensure proper positioning and automatically adjusts or pauses operations to prevent damage, ensuring consistent and effective compressions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If CPR chest compression machines are used to deliver consistent compressions, then compression effectiveness is improved, but patient shifting or sliding within the device occurs when tilted, leading to improper positioning

Engineering Contradiction:

Improvecompression effectivenessVSAvoidproper positioning

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patent employs a tilt sensor that continuously monitors the angle of the CPR compression device and provides real-time feedback. When the device is tilted beyond a predetermined threshold, the system generates an alert to notify the operator, enabling timely correction of positioning. This feedback mechanism ensures that compression effectiveness is maintained while preventing improper positioning due to tilting.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent replaces manual monitoring and adjustment of device positioning with an automated electronic tilt sensing system. The tilt sensor electronically detects angular deviations and triggers alerts, substituting the need for continuous manual mechanical adjustment and visual inspection by operators.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Productivity

If the CPR machine operates during tilting events, then productivity is maintained, but compression precision deteriorates due to patient shifting

Engineering Contradiction:

ImproveCPR delivery continuityVSAvoidcompression depth accuracy

Core Design Contradiction:

ProductivityVSManufacturing precision

Solution Approach 1:

The tilt sensor provides continuous feedback on device orientation, enabling the system to monitor compression precision conditions in real-time. When tilting is detected, the feedback alert allows operators to correct positioning before compression accuracy deteriorates, maintaining both productivity and precision.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The system performs preliminary detection of tilt conditions before compression precision is compromised. By detecting tilting events and generating alerts in advance, the system enables proactive correction of positioning, preventing deterioration of compression depth accuracy while maintaining operational continuity.

Inventive Principle:

Principle #10Preliminary action

3Measurement precision

If tilt monitoring is added to the CPR device, then positioning accuracy is improved, but device complexity increases

Engineering Contradiction:

Improvetilt detection accuracyVSAvoidsystem component count

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent replaces complex mechanical positioning adjustment mechanisms with a simpler electronic tilt sensing system. The tilt sensor electronically measures angular orientation and provides digital alerts, substituting elaborate mechanical alignment systems with a more compact and manageable electronic monitoring solution.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The tilt sensor acts as an intermediary component that bridges the physical tilting condition and the operator's awareness. Rather than requiring complex mechanical interlocks or adjustment mechanisms, the sensor mediates between device orientation and operator response through simple electronic alerts, reducing overall system complexity.

Inventive Principle:

Principle #24Intermediary (Mediator)

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 device ensures consistent and effective CPR compressions by alerting users to tilt events and adjusting operations to maintain proper positioning, reducing the risk of injury and improving resuscitation outcomes.

Implementation Method 1

a tilt module that senses a tilt event of the external chest compressor device

Methodology Applied

Scientific EffectTilt sensing: Accelerometer

Data Source

PatentUS9700482B2Mechanical chest compression device with tilt sensor

Publication Date: 2017.07.11 PHYSIO CONTROL CORP

AI summary

A medical device such as an external cardiopulmonary resuscitation (CPR) device delivers chest compressions to a patient. The patient may shift and/or slide within the CPR chest compression structure if the CPR chest compression structure is tilted from the horizontal, however. A tilt module is used to sense a tilt event, report it to a user of the CPR chest compression machine, and cause the CPR chest compression machine, user, or tilt module to respond to the tilt event. Response can be pausing the CPR chest compression machine, having the user reposition the CPR chest compression machine, or the like.