Laser Surface Structuring for Cell Interaction Control
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Solution Overview
Problem
Existing methods for optimizing surfaces in cell biological and medical applications often fail to achieve satisfactory results in promoting or inhibiting cell and bacterial attachment and proliferation, particularly for medical implants and cell culture vessels.
Innovation Solution
A device with surface structuring using electromagnetic radiation to create microstructures overlaid with nanostructures, allowing for locally adapted properties by controlling the morphology through adjustable process parameters, such as wavelength and pulse duration, to enhance or inhibit cell and bacterial growth, and store nutrients or active substances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional surface coating methods are used on medical implants, then cell colonization can be promoted, but the surface properties cannot be precisely controlled and results are unsatisfactory
Solution Approach 1:
The patent applies laser irradiation with specific parameters (wavelength, pulse duration, energy density) to modify surface properties precisely. By changing these parameters, the surface morphology can be controlled at micro and nano levels to achieve desired cell interaction properties, resolving the contradiction between reliable cell colonization and precise surface control.
Solution Approach 2:
The patent replaces conventional mechanical coating methods with electromagnetic radiation (laser) to create surface structures. This substitution enables precise control over surface morphology without the variability inherent in coating processes, achieving both reliable cell colonization and precise manufacturing control.
2Ease of manufacture
If uniform surface treatment is applied to devices, then manufacturing is simplified, but locally adapted properties for different cell types cannot be achieved
Solution Approach 1:
The patent creates different surface structures in different areas of the device by controlling laser irradiation parameters locally. This allows specific regions to be optimized for different cell types or functions while maintaining a unified manufacturing process, achieving both ease of manufacture and local adaptability.
Solution Approach 2:
The patent uses dynamic control of laser parameters during processing to create varied surface properties across the device. By adjusting wavelength, pulse duration, and energy density in real-time during manufacturing, the system achieves local adaptation without complicating the overall manufacturing approach.
3Ease of manufacture
If simple surface modification is used, then processing is easier, but satisfactory results in promoting cell attachment are not achieved
Solution Approach 1:
The patent achieves effective cell attachment promotion through controlled laser irradiation parameters. By optimizing wavelength, pulse duration, and energy density, the process creates specific micro and nano surface structures that reliably promote cell attachment while maintaining relatively simple processing compared to multiple coating steps.
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 surface structuring enables targeted promotion or inhibition of cell and bacterial growth, improving cell densities and nutrient supply in cell cultures, and adapting medical implants for specific cell interactions, enhancing regenerative medicine applications.
Implementation Method 1
a surface structure is produced on at least one surface at least partially by means of electromagnetic radiation
Implementation Method 2
The surface structuring according to the invention allows the production of different surface areas with locally adapted properties
Data Source
Figure 1
AI summary
Structuring surfaces of devices (10) for cell-biological and/or medical applications, comprises at least partially generating a surface structure (11, 12, 13) on the surfaces by means of electromagnetic radiation. The surface structure comprises a microstructure superimposed on a nanostructure. An independent claim is also included for the device for cell-biological and/and medical applications, comprising at least one surface with the surface structure.