Hyperosmolar Priming Solution for Cerebral Edema Reduction
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Solution Overview
Problem
Current cardiopulmonary resuscitation (CPR) methods often result in high mortality and neurological damage due to ischemia-reperfusion injury, particularly affecting the brain, with limited success in re-establishing circulation and preventing organ damage within the first 3 to 5 minutes post-cardiac arrest.
Innovation Solution
Development of hyperosmolar priming solutions with human albumin, magnesium, and lidocaine to control reperfusion conditions, reducing cerebral edema and organ damage by managing osmolality, calcium levels, and anticoagulation through extracorporeal life support systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional CPR is employed within the first 3 to 5 minutes after circulatory standstill, then normal cerebral and myocardial function can recover, but time is critically limited and cerebral damage occurs in many cases
Solution Approach 1:
The patent applies preliminary action by pre-establishing extracorporeal life support systems and preparing specialized reperfusion solutions before cardiac arrest occurs. The system is ready to immediately take over circulation functions, eliminating the critical 3-5 minute time window limitation of conventional CPR.
Solution Approach 2:
The patent uses an intermediary approach by introducing an extracorporeal life support system as a mediator between the arrested heart and the body's circulation needs. This external system temporarily performs the function of the failed heart, allowing time for intervention without immediate cerebral damage.
2Productivity
If blood circulation is re-established quickly after cardiac arrest, then organ perfusion is restored, but reperfusion injury occurs causing substantial brain damage and mortality
Solution Approach 1:
The patent applies parameter changes by carefully controlling multiple parameters of the reperfusion process including blood pressure, flow rate, temperature, and oxygen content. The system restores circulation quickly while adjusting these parameters to minimize reperfusion injury, achieving both rapid perfusion restoration and organ protection.
Solution Approach 2:
The patent uses preliminary anti-action by administering protective medications and adjusting blood composition before reperfusion begins. This pre-treatment prevents or reduces the harmful effects of reperfusion injury while maintaining the benefits of rapid circulation restoration.
3Reliability
If extracorporeal life support systems are used to control reperfusion conditions, then organ damage is reduced, but device complexity and treatment cost increase
Solution Approach 1:
The patent applies universality by designing an extracorporeal life support system that performs multiple functions: maintaining circulation, controlling reperfusion parameters, filtering blood, and administering medications. This multi-functional approach consolidates what would otherwise require multiple separate devices, reducing overall system complexity.
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 protective solutions significantly reduce brain damage and mortality by allowing extended time for CPR initiation, improving neurological recovery and organ preservation, as demonstrated in animal models.
Implementation Method 1
hyperosmolar priming solutions with human albumin, magnesium, and lidocaine to control reperfusion conditions, reducing cerebral edema and organ damage by managing osmolality
Data Source
AI summary
The present invention relates to a protective solution for preventing or reducing reperfusion injury of the brain which contains magnesium ions and which has an osmolality of 350 to 600 mOsm/L, a pH value of 6.8 to 7.8 and albumin in an amount of 1 to 20% by weight.