Lipid-Envelope Oxygen Microbubbles for Ischemic Tissue Rescue
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Solution Overview
Problem
Current methods for delivering oxygen to patients, especially those with lung injury or acute hypoxia, are inadequate and invasive, leading to irreversible organ damage due to insufficient oxygen delivery and the risks associated with mechanical ventilation.
Innovation Solution
The development of microbubble compositions containing a lipid envelope encapsulating oxygen, which can be administered via injection or infusion to quickly increase oxygen levels in the blood or tissues, preventing ischemic injury by providing a high concentration of oxygen directly to the body.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If mechanical ventilation is used to restore oxygen levels, then oxygen delivery to tissues is improved, but lung injury and systemic inflammation worsen due to increased ventilator pressures
Solution Approach 1:
The patent uses microbubbles as an intermediary carrier to transport oxygen directly to tissues, bypassing the damaged alveolar-capillary interface. The microbubbles serve as a mediator that delivers oxygen without requiring functional lung parenchyma, thus avoiding further lung injury while maintaining oxygen delivery.
Solution Approach 2:
The invention employs pressurized oxygen microbubbles that can be injected directly into the bloodstream or tissues. This pneumatic delivery system allows oxygen to be transported under pressure directly to ischemic tissues, independent of pulmonary gas exchange function, thereby avoiding ventilator-induced lung injury.
2Quantity of substance
If conventional oxygen delivery methods are used in emergency situations, then oxygen supplementation is provided, but the response time is too slow leading to irreversible organ damage
Solution Approach 1:
The patent prepares microbubble suspensions in advance that can be rapidly administered in emergency situations. The microbubbles are pre-formulated and can be quickly injected into the patient, providing immediate oxygen delivery without the delays associated with establishing airways or adjusting ventilators.
Solution Approach 2:
The invention replaces the complex mechanical respiratory support system (ventilators, airway management) with a simpler direct injection system. This substitution allows oxygen to be delivered directly to the bloodstream or tissues through injection, dramatically reducing response time and eliminating the need for complex respiratory mechanics.
3Quantity of substance
If high ventilator pressures are applied to overcome lung injury, then oxygen transfer to blood is improved, but barotrauma and systemic inflammation worsen
Solution Approach 1:
The microbubbles act as an intermediary that carries oxygen directly to tissues without requiring high alveolar pressures. By bypassing the damaged alveolar-capillary barrier, the system delivers oxygen at lower systemic pressures, avoiding barotrauma while maintaining adequate oxygen transfer.
4Quantity of substance
If invasive respiratory support is provided to restore oxygenation, then oxygen delivery is improved, but the complexity and invasiveness of the treatment worsens
Solution Approach 1:
The patent replaces complex mechanical respiratory support systems (ventilators, endotracheal tubes, airway management equipment) with a simple injection-based delivery system. This substitution dramatically reduces device complexity and invasiveness while maintaining oxygen delivery capability.
Solution Approach 2:
The invention extracts the oxygen delivery function from the complex respiratory system and isolates it into a separate, simple injectable formulation. By separating oxygen delivery from pulmonary gas exchange, the system eliminates the need for complex respiratory support apparatus.
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 microbubble compositions effectively increase oxygen concentration in the blood and tissues, reducing morbidity and mortality from hypoxia by providing rapid and non-invasive oxygen delivery, even in cases where traditional methods fail, thereby preventing or alleviating ischemic injury.
Implementation Method 1
microbubbles encapsulating one or more gases, preferably oxygen... contain a lipid envelope formed of at least one base lipid and at least one emulsifying agent
Implementation Method 2
The microbubbles may be administered to a patient in an effective amount to increase the oxygen concentration in the patient's blood
Implementation Method 3
contain a lipid envelope formed of at least one base lipid and at least one emulsifying agent... encapsulating one or more gases
Data Source
AI summary
Compositions containing a carrier and microbubbles encapsulating one or more gases, preferably oxygen, and methods for making and using the compositions are described herein. The microbubbles contain a lipid envelope. The compositions may be administered to a patient to quickly deliver large amounts of oxygen to the patient's blood supply or directly to a tissue in need of oxygen. The compositions may be administered via injection or as a continuous infusion. The compositions contain a concentrated microbubble suspension, where the suspension contains at least 40 mL oxygen/dL suspension. The microbubbles are preferably less than 20 microns in diameter, more preferably less than 15 microns in diameter. The microbubbles described herein may be administered to a patient in an effective amount to increase in oxygen concentration in the patient's blood, and/or one or more tissues or organs.