Non-invasive Cerebral Perfusion Device with Limb Compression Control

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Solution Overview

Problem

Conventional invasive cerebral perfusion-increasing devices cause complications due to prolonged compression, discomfort, and risk of necrosis, and are inefficient for rapid blood pressure measurement, necessitating a non-invasive solution that adjusts compression levels and duration based on individual limb characteristics.

Innovation Solution

A non-invasive cerebral perfusion increasing device with cuffing pad units and a control unit that includes a blood pressure detection module and compression control module, using sensors to detect blood pressure and adjust compression levels to increase cerebral perfusion, allowing for comfortable and controlled blood flow diversion to the cerebral region.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If compression is applied to increase cerebral perfusion, then cerebral blood flow is improved, but patient comfort deteriorates and risk of limb necrosis increases

Engineering Contradiction:

Improvecerebral perfusion increaseVSAvoidcompression discomfort and necrosis risk

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The device applies different compression levels to different limbs based on individual characteristics. The control unit adjusts compression pressure for each limb separately, allowing localized optimization that maintains comfort while achieving therapeutic cerebral perfusion increase.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The compression level is dynamically adjusted based on real-time blood pressure feedback. The system continuously monitors blood pressure and modifies compression pressure accordingly, transitioning from static to dynamic control to prevent excessive compression while maintaining therapeutic effect.

Inventive Principle:

Principle #15Dynamics

2Duration of action of moving object

If compression is applied for prolonged periods to increase cerebral perfusion, then therapeutic effect is improved, but patient comfort and safety deteriorate

Engineering Contradiction:

Improvecompression durationVSAvoidcompression discomfort and necrosis risk

Core Design Contradiction:

Duration of action of moving objectVSObject-affected harmful factors

Solution Approach 1:

The device implements periodic compression cycles with alternating compression and relaxation phases. This allows prolonged therapeutic effect while preventing continuous compression discomfort and necrosis risk through regular blood flow restoration during relaxation periods.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The system uses real-time blood pressure monitoring to provide feedback control. When blood pressure indicates adequate perfusion or potential discomfort, the system automatically adjusts or terminates compression, enabling safe prolonged therapy through continuous physiological monitoring.

Inventive Principle:

Principle #23Feedback

3Measurement precision

If conventional blood pressure gauges are used, then blood pressure measurement is achieved, but measurement time is excessively long

Engineering Contradiction:

Improveblood pressure measurementVSAvoidmeasurement time

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The device replaces conventional mechanical blood pressure measurement with an integrated sensor system that continuously monitors blood pressure during compression. This substitution enables rapid measurement without the time-consuming manual inflation and deflation cycles of traditional gauges.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 achieves a 30% average increase in cerebral perfusion, maintains patient comfort, and allows for individualized adjustment of blood pressure, improving prognosis in acute stroke patients by providing a non-invasive and effective means to increase cerebral blood flow.

Implementation Method 1

a blood pressure detection member; wherein the blood pressure detection module detects the blood pressure value of the corresponding region of installation using the blood pressure detection member

Methodology Applied

Scientific EffectBlood pressure detection:

Implementation Method 2

four cuffing pad units configured to compress regions of installation... controls the compression control member based on the detected blood pressure value, thereby adjusting a level of compression of the compression pad and thus increasing cerebral perfusion

Methodology Applied

Scientific EffectCompression: Compression

Data Source

PatentUS10610239B2Non-invasive cerebral perfusion increasing device

Publication Date: 2020.04.07 AJOU UNIV IND ACADEMIC COOP FOUND

AI summary

A non-invasive cerebral perfusion increasing device including four cuffing pad units and a control unit which is connected to the cuffing pad units and is equipped with a blood pressure sensing module and a compression control module. In the non-invasive cerebral perfusion increasing device each cuffing pad unit respectively includes a compression pad, a compression control member and a blood pressure sensing member. The blood pressure sensing module uses the blood pressure sensing members to sense the systolic blood pressure values of the portions of each of the limbs where they are attached and the compression control module controls the degree of compression of each compression pad by controlling the compression control member to a setting desired by the user based on the sensed blood pressure value, such that the blood flow applied to the limbs is blocked and, indirectly, cerebral perfusion is increased.