Multi-Ring CPR Suction Cup for Fast Patient-Size Adaptation

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Solution Overview

Problem

Conventional CPR devices with one-size-fits-all suction cups are ineffective for smaller patients, requiring multiple suction cups and increased force for attachment, which can be time-consuming and inefficient.

Innovation Solution

Design of suction cups with multiple circular members of varying diameters and unique identifiers that allow for automatic adjustment of CPR settings based on patient size, enabling quicker attachment and reduced force requirements.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a one-size-fits-all suction cup is used, then device complexity is reduced, but adaptability to different patient sizes deteriorates

Engineering Contradiction:
Improvesuction cup configurationVSAvoidpatient size compatibility
Core Design Contradiction:
Device complexityVSAdaptability or versatility

Solution Approach 1:

The suction cup is divided into multiple circular members (first circular member, second circular member, third circular member) with different diameters, allowing each segment to accommodate different patient chest sizes. The larger circular members suit adult patients while smaller ones suit pediatric patients, eliminating the need for multiple separate suction cups.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The suction cup assembly serves multiple functions by incorporating circular members of varying sizes, enabling a single device to adapt to different patient populations (adults, children, infants). The system universally addresses the need for size-appropriate suction cups across all patient types.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If multiple suction cups are provided for different patient sizes, then adaptability improves, but loss of time increases due to selection and replacement

Engineering Contradiction:
Improvepatient size compatibilityVSAvoidsuction cup replacement time
Core Design Contradiction:
Adaptability or versatilityVSLoss of time

Solution Approach 1:

Multiple circular members that would traditionally require separate suction cup units are merged into a single integrated suction cup assembly. This allows all size options to be available simultaneously without requiring rescuers to select and swap between separate cups, eliminating time loss while maintaining adaptability.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The suction cup is pre-configured with multiple circular members of different sizes before use, so the appropriate size is already in place and ready for immediate attachment. This preliminary preparation eliminates the need for post-selection and replacement actions during emergency situations.

Inventive Principle:
Principle #10Preliminary action

3Adaptability or versatility

If suction cup height is increased to stick to chest topology, then adaptability to curved surfaces improves, but force required for attachment increases

Engineering Contradiction:
Improvechest surface conformityVSAvoidattachment force
Core Design Contradiction:
Adaptability or versatilityVSForce

Solution Approach 1:

Different circular members are positioned at different locations and heights on the suction cup assembly, allowing each to contact the chest at its optimal point. This local differentiation enables adaptation to curved chest surfaces without requiring uniform height increases across the entire suction cup, thereby avoiding excessive attachment force requirements.

Inventive Principle:
Principle #3Local quality

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

Enables efficient and rapid CPR on patients of different sizes without the need for multiple suction cups, reducing attachment force and improving treatment efficiency.

Implementation Method 1

suction cups are generally designed to stick or attach to polished, flat, and hard surfaces

Methodology Applied
Scientific EffectVacuum suction: Vacuum

Implementation Method 2

it often needs to have a certain height to adequately attach to the chest of the patient, but this requires further force to empty the air in the suction cup when attaching

Methodology Applied
Scientific EffectAtmospheric pressure: Pressure Increase

Data Source

PatentUS20220175614A1Mechanical cardiopulmonary resuscitation device suction cup
Publication Date: 2022.06.09 PHYSIO CONTROL CORP
  • US20220175614A1 patent drawing
  • US20220175614A1 patent drawing
  • US20220175614A1 patent drawing

AI summary

Examples of the disclosure include a universal suction cup for a cardiopulmonary resuscitation device having a first circular member extending from a piston-facing surface, and a second circular member concentric to the first circular member extending from the piston-facing surface, the second circular member having a diameter that is less than the first circular member. Example of the disclosure also include suction cups with rigid members to reduce the amount of force necessary to attach the suction cup to a patient. Examples of the disclosure also include a mechanical compression device which can detect the type of suction cup attached to a compression member and activate particular features or settings based on the attached suction cup.