Acoustic Wave TBI Model via Intact Skull
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Solution Overview
Problem
Current methods for simulating traumatic brain injury (TBI) in animal models, such as open-head models, are invasive and alter surrounding biological chemistry, making them unsuitable for regenerative stem cell therapy and prone to secondary damage, while closed-head models lack precision and reproducibility.
Innovation Solution
A non-invasive method using an acoustic wave generator to administer controlled acoustic waves to the brain, specifically targeting the frontal motor cortex, simulating TBI without craniotomy, allowing for precise and reproducible brain trauma in animal models.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If open-head models (FPI, CCI, PBBI) are used to simulate TBI, then TBI can be accurately modeled within the brain, but surrounding biological chemistry is altered due to craniotomy surgery and associated comprehensive damage
Solution Approach 1:
The patent extracts the harmful craniotomy surgery step from the TBI modeling process. By using acoustic wave delivery through the intact skull, the method achieves brain injury modeling without removing the skull or altering surrounding tissue chemistry, thus eliminating the harmful factor while maintaining modeling accuracy
Solution Approach 2:
The patent replaces the mechanical craniotomy surgery with an acoustic wave delivery system. Instead of physically opening the skull to access the brain, acoustic waves penetrate the intact skull to deliver controlled trauma to specific brain regions, substituting a non-invasive energy-based mechanism for invasive mechanical surgery
2Measurement precision
If open-head penetrating models are used, then TBI can be modeled specifically within the brain, but they are not appropriate for administering regenerative stem cell therapy due to release of inflammatory cytokines
Solution Approach 1:
The patent converts the previously harmful effect of skull removal into a beneficial intact skull barrier. The intact skull protects the brain from inflammatory cytokine release and maintains the blood-brain barrier integrity, creating a favorable environment for stem cell therapy administration while still enabling precise TBI modeling
Solution Approach 2:
The patent extracts the source of inflammatory cytokine release (craniotomy surgery) from the modeling process. By delivering acoustic waves through the intact skull, the method eliminates the surgical trauma that would otherwise trigger inflammatory responses and prevent stem cell therapy effectiveness
3Object-affected harmful factors
If closed head TBI models (Marmarou's weight drop) are used, then the skull remains intact, but precision and reproducibility are poor with high mortality rates
Solution Approach 1:
The patent replaces the uncontrolled mechanical weight drop system with a controlled acoustic wave delivery system. Acoustic waves allow precise control of energy delivery parameters (frequency, amplitude, duration) and enable targeted trauma to specific brain regions, achieving high precision and reproducibility while maintaining skull integrity
Solution Approach 2:
The patent introduces dynamic control capabilities to the TBI modeling process. Acoustic wave parameters such as frequency, amplitude, and pulse duration can be dynamically adjusted to achieve reproducible injury patterns, replacing the static and uncontrolled weight drop mechanism with a dynamically controllable energy delivery system
4Object-affected harmful factors
If closed head TBI models (blast exposure) are used, then the skull remains intact, but injuries are caused to air-filled organs not associated with TBI
Solution Approach 1:
The patent applies local quality by directing acoustic energy to a specific focal point within the brain through the intact skull. The acoustic waves are concentrated on the target brain region, allowing TBI modeling without affecting other organs, thus achieving localized injury while preserving skull integrity and avoiding collateral damage to air-filled organs
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
This approach provides a clinically relevant model for TBI that reduces secondary damage, enables analysis of regenerative therapies, and replicates the pathophysiology of TBI, including blast TBI, with reproducible behavioral and neuropathological outcomes.
Implementation Method 1
administering one or more acoustic waves to the brain of the animal with an acoustic wave generator
Implementation Method 2
The pressure from these acoustic blasts emits forces equal to or greater than the physical force required for a mild TBI
Data Source
AI summary
Disclosed herein are systems and methods of generating traumatic brain injury. More specifically, the present disclosure relates to acoustic systems and methods for inflicting traumatic brain injury and developing an animal model of traumatic brain injury.