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Textile Design of an Intervertebral Disc Replacement Device from Silk Yarn
Michael Wöltje1, Liesa Künzelmann1, Basak Belgücan1
1Institute of Textile Machinery and High-Performance Material Technology, Technische Universität Dresden, 01602 Dresden, Germany.
Biomimetics (Basel, Switzerland)
|April 24, 2023
Summary
Researchers developed a textile intervertebral disc (IVD) using silk to mimic natural structures. This innovative approach aims to improve treatments for low back pain caused by disc degeneration.
Area of Science:
- Biomaterials Engineering
- Regenerative Medicine
- Textile Science
Background:
- Low back pain is a prevalent issue often stemming from intervertebral disc (IVD) degeneration.
- Current treatments for IVD degeneration have limited efficacy in fully restoring disc function.
Purpose of the Study:
- To reconstruct the annulus fibrosus (AF) and nucleus pulposus (NP) components of the IVD using textile design.
- To mimic the natural structural features of the IVD with silk-based biomaterials.
Main Methods:
- Developed an embroidered silk yarn structure to replicate the AF's lamellar and alternating fiber orientation (+30° and -30°).
- Utilized fiber additive manufacturing with silk staple fibers to create a porous 3D structure mimicking the NP's fiber network.
Main Results:
- The embroidered silk ribbons demonstrated tensile strength comparable to the natural AF.
- A porous textile 3D structure was successfully generated to potentially reinforce the NP.
Conclusions:
- Silk is a suitable biomaterial for textile IVD reconstruction due to its biocompatibility, biodegradability, and mechanical properties.
- The developed textile structures effectively mimic the AF and NP, offering a promising foundation for novel IVD regeneration strategies.
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