Head-Up CPR Board With Cerebral Blood Flow Feedback Control

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Solution Overview

Problem

Existing cardiopulmonary resuscitation devices fail to maintain a stable head-up posture for patients, which is crucial for reducing intracranial pressure and improving cerebral blood flow during emergency treatment.

Innovation Solution

A cardiopulmonary resuscitation device with a head support mechanism and cerebral blood flow measurement system that adjusts the patient's head angle to optimize cerebral blood flow, using near-infrared spectroscopy for real-time monitoring and control unit operation modes to stabilize the head-up posture.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If chest compression is performed in the supine position, then cardiopulmonary resuscitation can be performed, but intracranial pressure increases and cerebral blood flow decreases

Engineering Contradiction:

Improvecardiopulmonary resuscitation effectivenessVSAvoidintracranial pressure increase

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The device dynamically adjusts the head support angle to transition from supine to head-up posture, optimizing both cerebral blood flow and cardiopulmonary resuscitation effectiveness. The angle adjustment mechanism allows real-time modification of patient positioning based on treatment needs.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The device changes the positional parameter of the patient's head by adjusting the support angle, transforming the physiological state from supine to head-up posture. This parameter change reduces intracranial pressure while maintaining resuscitation effectiveness.

Inventive Principle:

Principle #35Parameter changes

2Object-affected harmful factors

If head-up posture is adopted to reduce intracranial pressure, then cerebral blood flow improves, but stable posture maintenance becomes difficult

Engineering Contradiction:

Improveintracranial pressure reductionVSAvoidposture stability

Core Design Contradiction:

Object-affected harmful factorsVSStability of the object's composition

Solution Approach 1:

The device provides automatic angle adjustment and maintenance based on sensor feedback, eliminating the need for manual intervention to maintain head-up posture. The system self-regulates to ensure stable positioning throughout the resuscitation process.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The device incorporates sensors that continuously monitor patient position and provides feedback to the control system, which automatically adjusts the head support angle to maintain optimal posture. This closed-loop control ensures stable head-up positioning.

Inventive Principle:

Principle #23Feedback

3Device complexity

If manual angle adjustment is used, then device complexity is reduced, but measurement precision and control accuracy deteriorate

Engineering Contradiction:

Improveadjustment mechanism simplicityVSAvoidcerebral blood flow measurement accuracy

Core Design Contradiction:

Device complexityVSMeasurement precision

Solution Approach 1:

The device replaces manual mechanical adjustment with an automated actuation system controlled by sensors and a control unit. This substitution enables precise angle control and cerebral blood flow measurement without requiring manual intervention, improving measurement accuracy while maintaining reasonable device complexity.

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 enhances brain perfusion pressure and cerebral blood flow, improving neurological prognosis by maintaining an optimal head-up posture and enabling precise emergency treatment.

Implementation Method 1

using near-infrared spectroscopy for real-time monitoring

Methodology Applied

Scientific EffectNear-infrared spectroscopy: Absorption Spectroscopy

Implementation Method 2

head-up cardiopulmonary resuscitation, which is the head-raising posture, increases the venous return from the brain to the heart by gravity

Methodology Applied

Scientific EffectGravity: Gravitation

Data Source

PatentUS20260041604A1Head-up cardiopulmonary resuscitation device based on cerebral blood flow measurement, and method for operating same

Publication Date: 2026.02.12 SEOUL NAT UNIV HOSPITAL

AI summary

Provided are a cardiopulmonary resuscitation device, and a method for operating the cardiopulmonary resuscitation device. The cardiopulmonary resuscitation device may comprise: a cardiopulmonary resuscitation board comprising a head support part, which includes a receiving portion formed concavely in order to support at least a portion of a patient's head, a support, which is disposed at the bottom of the head support pat and adjusts the angle of the patient's head, a backboard for supporting the patient's back, and a belt for securing the patient; a cerebral blood flow measurement device for measuring the real-time cerebral blood flow of the patient according to the angle of the patient's head; and a control unit for controlling to adjust the angle between the support and the backboard within a preset angle range on the basis of the measured cerebral blood flow of the patient.