A revolutionary bioprinter, small enough to fit the needs of delicate vocal cord surgeries, has been developed by researchers led by Professor Luc Mongeau. This innovative device can precisely deliver healing hydrogels directly to the throat, addressing a critical issue in current surgical methods. The hydrogels, made of cross-linked polymer chains, are crucial for tissue repair and preventing post-surgical complications. However, the traditional needle-based delivery system often fails to reach vital areas in the vocal cords, leading to suboptimal outcomes.
The new bioprinter, measuring a mere 2.7 mm in diameter, is a significant advancement. It is small enough to allow surgeons to visualize the surgical site while being accurate enough to deposit hydrogels in the precise locations required. The team's prototype, made of silicone, was meticulously designed to ensure the seamless integration of cables and motors. This device represents a 76% reduction in size compared to previous bioprinters, making it suitable for the intricate nature of vocal cord surgeries.
The hydrogel used in this study was specifically developed by Professor Mongeau's research group to cater to the unique demands of vocal cord surgeries. Its unique property of becoming less viscous under pressure makes it ideal for the small nozzle of the bioprinter. This gel has not yet been described in any literature, adding to its novelty and potential impact.
In the testing phase, the researchers utilized a surgical model that mimicked the vocal cords. Swen Groen, a PhD student in the research group, successfully reconstructed parts of the vocal fold, a feat that current methods struggle to achieve. Groen's success, despite having no surgical training, highlights the device's potential.
While the team's findings indicate that minor variations in precision do not significantly impact the final printed results, further testing by surgeons is essential to determine the device's true accuracy. Mariah Hahn, a professor of biomedical engineering, supports this notion, emphasizing the importance of surgeon validation to assess the device's value.
The potential applications of this bioprinter extend beyond vocal cord surgeries. Groen suggests that the team could explore testing the device for other procedures, such as those involving the heart or liver. This versatility and the potential for improved surgical outcomes make this technology a groundbreaking development in the field of biomedical engineering.
