Pyrotechnic Cell Disruption Apparatus for Microfluidic Lysis
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Solution Overview
Problem
Current cell disruption methods face challenges in efficiently processing small sample sizes, particularly in microfluidic volumes, where building pressure and controlling heat exposure are critical, while also minimizing environmental contamination and regulatory compliance.
Innovation Solution
A pyrotechnic cell disruption apparatus that uses a pyrotechnic charge to create pressure in a chamber, rapidly disrupting cells with a combination of pressure and heat, without the need for hydraulic presses or chemical reagents, allowing for efficient cell lysis in small volumes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If hydraulic press is used for cell disruption, then cell disruption can be achieved, but it takes time to build up pressure and requires a large-scaled device
Solution Approach 1:
The patent replaces the hydraulic press mechanical system with a pyrotechnic combustion system. The pyrotechnic charge generates gas rapidly upon ignition, creating pressure to disrupt cells without requiring the complex hydraulic press mechanism, thereby achieving faster cell disruption with a simpler, more compact device.
Solution Approach 2:
The patent changes the pressure buildup mechanism from gradual hydraulic pressure accumulation to rapid pyrotechnic gas generation. This parameter change in pressure generation speed and mechanism enables faster cell disruption while reducing device scale requirements.
2Productivity
If heat lysis is used for cell disruption, then cell disruption efficiency is improved, but excessive heat over longer time period damages proteins
Solution Approach 1:
The patent uses periodic action by igniting the pyrotechnic charge in cycles. The combustion occurs rapidly for a short duration, generating both pressure and heat in a controlled, periodic manner. This periodic combustion pattern achieves efficient cell disruption while limiting total heat exposure time to prevent protein damage.
Solution Approach 2:
The patent applies the rushing through principle by using rapid pyrotechnic combustion to achieve cell disruption quickly. The pyrotechnic charge combusts in a matter of seconds, rapidly generating pressure and heat to disrupt cells before the heat can cause significant protein damage, thus skipping the prolonged heating phase that would be harmful.
3Productivity
If chemical lysis using strong alkaline materials is used, then cell disruption is achieved, but additional buffering/neutralization steps are required
Solution Approach 1:
The patent replaces chemical lysis with a physical pyrotechnic combustion approach. Instead of using strong alkaline chemicals that require subsequent buffering and neutralization, the pyrotechnic charge generates mechanical pressure and thermal heat to disrupt cells physically, eliminating the need for additional chemical processing steps.
Solution Approach 2:
The patent extracts the cell disruption function from the chemical lysis process. By using pyrotechnic combustion, the disruption mechanism is separated from chemical reactions, allowing direct cell lysis without requiring subsequent buffering or neutralization steps that would be needed if chemical lysis were used.
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 method enables rapid and efficient cell disruption in small sample sizes, minimizing heat exposure and environmental risk, while being suitable for point-of-care devices and compliant with regulatory standards.
Implementation Method 1
a pyrotechnic charge configured to be ignited and to combust upon ignition
Implementation Method 2
pyrotechnic cell disruption apparatus that uses a pyrotechnic charge to create pressure in a chamber, rapidly disrupting cells with a combination of pressure and heat
Data Source
AI summary
This pyrotechnic cell disruption device is provided with: a pyrotechnic charge to be ignited which is configured to be burnt upon ignition; and a pressure chamber for housing a cell-containing fluid sample therein, said pressure chamber being configured to be pressurized when the pyrotechnic charge is ignited and burnt.