Lockable Hinge Plunger for Cardiopulmonary Resuscitation

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Manual cardiopulmonary resuscitation is strenuous and limited in duration, and existing mechanical devices for cardiopulmonary massage are complex and costly due to the need for active repositioning of the plunger to maintain correct compression point over the patient's ribcage during prolonged use.

Innovation Solution

A mechanical cardiopulmonary massage device with a plunger that is securely attachable to the ribcage, allowing for passive repositioning in the X-Y plane between massaging strokes, using a lockable hinge mechanism and hook-and-loop fastening to maintain correct alignment without the need for an actuator, ensuring the plunger remains over the breastbone during compression.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If an active repositioning actuator is used to maintain plunger position, then the compression point accuracy is improved, but the device complexity and cost increase

Engineering Contradiction:

Improvecompression point accuracyVSAvoiddevice complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The plunger is designed to automatically reposition itself in the X-Y plane between massaging strokes through its mounting configuration, without requiring an active actuator. The plunger can freely move transversely to the actuating direction and self-adjust to maintain alignment with the compression point, eliminating the need for complex active repositioning mechanisms while maintaining compression accuracy.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The plunger mounting allows dynamic movement in the X-Y plane during unloaded states between strokes, enabling the plunger to adapt its position automatically. This dynamic capability replaces the need for active actuators while maintaining compression point accuracy throughout prolonged use.

Inventive Principle:

Principle #15Dynamics

2Device complexity

If manual cardiopulmonary resuscitation is performed, then the device complexity is reduced, but the duration of action is limited due to operator fatigue

Engineering Contradiction:

Improvedevice complexityVSAvoidduration of action

Core Design Contradiction:

Device complexityVSDuration of action of moving object

Solution Approach 1:

The patent replaces the manual mechanical system with an automated mechanical massaging device that uses a drive mechanism to actuate the plunger. This substitution eliminates operator fatigue and enables prolonged duration of action, while the device maintains relatively simple mechanics through the passive plunger repositioning design.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Reliability

If the plunger is firmly fixed during massaging, then the compression effectiveness is improved, but the repositioning capability between strokes is reduced

Engineering Contradiction:

Improvecompression effectivenessVSAvoidrepositioning capability

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The plunger mounting provides periodic repositioning capability - freely movable during unloaded intervals between strokes to maintain alignment, then firmly secured during the massaging stroke to ensure compression effectiveness. This periodic transition between mobile and fixed states optimizes both repositioning capability and compression reliability.

Inventive Principle:

Principle #19Periodic action

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

This solution enables reliable and automatic maintenance of the correct compression point, reducing operator fatigue and device complexity, ensuring effective cardiopulmonary massage without shifting during prolonged use, thereby enhancing patient safety and reducing the risk of injury.

Implementation Method 1

using a lockable hinge mechanism and hook-and-loop fastening to maintain correct alignment

Methodology Applied

Scientific EffectHook-and-loop fastening: Velcro

Implementation Method 2

mounted in such a way as to be freely movable in a plane running transversely to the actuating direction at least during an unloaded state between two massaging strokes

Methodology Applied

Scientific EffectHinge mechanism: Hinge

Implementation Method 3

Methodology Applied

Scientific EffectLocking mechanism:

Data Source

PatentUS10688018B2Apparatus for cardiopulmonary massaging and/or resuscitation

Publication Date: 2020.06.23 GS ELEKTROMEDIZINISCHE GERATE G STEMPLE

AI summary

The apparatus of the invention is used for cardiopulmonary massaging and/or resuscitation of a patient and includes a massaging device (15) which can be reversibly driven in an actuating direction (23) by a drive unit (18) and which has a pressure surface (20) that can be placed in a target contact zone (21) on the rib cage (12) of a patient (11). In order to easily and reliably prevent the pressure surface of the massaging device to deviate from a target pressure point (21), the plunger (19) can be secured to the rib cage (12) of the patient (11) in the target contact zone (21) and is mounted in such a way as to be freely movable in a plane running transversely to the actuating direction (23) at least during an unloaded state between two massaging strokes.