CPR Band Application Aid for Patient-Under Placement

Solution Overview

Problem

Existing cardiopulmonary resuscitation (CPR) apparatuses are difficult to apply to patients, especially obese individuals, due to stiffness causing discomfort and requiring patient lifting, which complicates handling and may cause pain.

Innovation Solution

A CPR apparatus with a flexible band and an application aid that allows the band to be easily positioned under the patient without lifting, using a stiffer application aid to facilitate placement and reduce patient discomfort, combined with an electromechanically or pneumatically actuated chest compression unit and optional cooling and defibrillation features.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If a stiff band is used to maintain the chest compression unit in position, then the structural stability is improved, but the patient comfort deteriorates due to additional pain

Engineering Contradiction:

Improvestructural stabilityVSAvoidpatient comfort

Core Design Contradiction:

Stability of the object's compositionVSObject-affected harmful factors

Solution Approach 1:

The band is designed with non-uniform stiffness: stiff sections at the ends for structural support and positioning, while the central section is flexible to accommodate patient movement and reduce discomfort. This local differentiation of mechanical properties resolves the contradiction between stability and comfort.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The band utilizes composite construction with different material sections - rigid or semi-rigid materials at the ends for structural integrity, and softer, more compliant materials in the central portion for patient comfort. This composite approach allows simultaneous achievement of both stability and comfort requirements.

Inventive Principle:

Principle #40Composite materials

2Stability of the object's composition

If a stiff band is used to maintain the chest compression unit in position, then the structural stability is improved, but the ease of operation deteriorates due to complicated handling

Engineering Contradiction:

Improvestructural stabilityVSAvoidease of operation

Core Design Contradiction:

Stability of the object's compositionVSEase of operation

Solution Approach 1:

The band is designed with non-uniform stiffness: stiff sections at the ends for structural support and positioning, while the central section is flexible to accommodate patient movement and reduce discomfort. This local differentiation of mechanical properties resolves the contradiction between stability and comfort.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The band utilizes composite construction with different material sections - rigid or semi-rigid materials at the ends for structural integrity, and softer, more compliant materials in the central portion for patient comfort. This composite approach allows simultaneous achievement of both stability and comfort requirements.

Inventive Principle:

Principle #40Composite materials

3Ease of operation

If the patient is lifted up for passing the CPR apparatus around the chest, then the application process is simplified, but the productivity deteriorates due to time consumption

Engineering Contradiction:

Improveapplication processVSAvoidtime consumption

Core Design Contradiction:

Ease of operationVSProductivity

Solution Approach 1:

The band is divided into functional segments: rigid end sections for structural support and flexible central sections for ease of application. This segmentation allows the band to be applied without lifting the patient, as the flexible portion can be maneuvered under the patient's body while the rigid ends maintain positioning stability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The band's mechanical properties are varied along its length, with stiffness parameters changing from high at the ends to low in the center. This parameter variation enables the band to be applied quickly without patient lifting, as the flexible central portion can be easily positioned under the patient while maintaining overall structural integrity.

Inventive Principle:

Principle #35Parameter changes

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

Facilitates easier and more comfortable application of CPR, reduces patient discomfort, and integrates cooling and defibrillation capabilities to enhance treatment effectiveness during cardiac emergencies.

Implementation Method 1

a compression device which periodically applies a force to a recipient's thorax

Methodology Applied

Scientific EffectMechanical Force: Mechanical Force

Data Source

PatentEP2919739B1Apparatus for providing cardiopulmonary resuscitation

Publication Date: 2020.06.10 SCHILLER AG

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AI summary

The invention concerns an Apparatus (1) for providing cardiopulmonary resuscitation by applying compressions to the chest of a patient (P). The apparatus (1) comprising - a chest compression unit (10), in particular comprising an automatic actuation, - at least one band (20) to be passed around said patient's chest and for maintaining the chest compression unit (10) in position on the patient's chest, wherein at least one end of the band (20) is releasably connectable to the unit (10) or another band. The apparatus (1) is designed for pushing the band (20) underneath said patient's chest, in particular on the side where said patient contacts the ground G, characterized in that the apparatus (1) comprises or is connectable to an application aid (30), in functional connection with the band (20), fixable to or movable relative to the band and being adapted to support pushing the band (20) underneath said patient's chest, wherein in particular the application aid is stiffer than the band.