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The Spinneret
Winter 2024

A Quarterly Newsletter from ramé-hart devoted to Coaxial, Triaxial, Quadaxial and Custom
Spinnerets used for Electrospinning, Bioprinting and Related Applications



Coaxial Electrospinning for Tissue Engineering and Fabricating Biomedical Scaffolds

Biomedical scaffolds and tissue engineering have seen significant advancements in recent years, largely due to innovative and novel manufacturing techniques. Among these, the use of ramé-hart coaxial spinnerets in the fabrication process stands out as a crucial methodology. Coaxial spinnerets, employed in the electrospinning process, play an important role in creating biomimetic scaffolds that hold immense potential for tissue regeneration and biomedical engineering applications.

At the heart of this technology is the electrospinning process, a method that allows for the production of nanofibers and nanostructures. Coaxial spinnerets enhance this process by incorporating a dual-channel system, where two distinct solutions or polymer melts can be extruded simultaneously. The coaxial setup typically involves an outer needle delivering a polymer solution and an inner needle delivering a bioactive material or other core material.

ramé-hart Custom Coaxial Needle used for Fabricating Biomedical Scaffolds

The coaxial arrangement facilitates the creation of fibers with a core-shell architecture. The outer layer forms the bulk of the scaffold, providing structural integrity, while the inner core can contain bioactive agents, growth factors, or even cells. This core-shell structure allows for the controlled and sustained release of bioactive substances, fostering an environment conducive to cell proliferation and tissue regeneration.

One of the key advantages of coaxial spinnerets is their ability to create scaffolds that closely mimic the natural extracellular matrix (ECM) of tissues.1 Researchers can engineer these scaffolds with specific mechanical properties, porosity, and bioactive properties to replicate the intricate architecture of native tissues. This biomimetic design is essential for guiding cell behavior and promoting tissue integration.

Coaxial spinnerets offer versatility in material selection. Different polymers can be used in the outer and inner layers, allowing researchers to tailor the properties of the scaffold to match the requirements of the target tissue. This flexibility is crucial for developing scaffolds suitable for a wide range of tissue engineering applications.

The electrospinning process with coaxial spinnerets enables the tuning of fiber diameter and porosity. This control over the scaffold's physical characteristics is vital for creating structures with optimal properties for various tissue types. Researchers can adjust these parameters to mimic the specific microenvironment needed for successful tissue regeneration.

Coaxially spun fibers find applications in diverse tissues, including bone, cartilage, skin, and blood vessels. The controlled release of bioactive agents from the coaxial scaffold enhances its ability to promote cell adhesion, migration, and differentiation. This makes coaxial spinnerets an invaluable tool in tissue engineering, facilitating the development of scaffolds that address specific tissue requirements.

In conclusion, ramé-hart coaxial spinnerets have emerged as a cornerstone in the fabrication of biomedical scaffolds for tissue engineering. Their ability to create biomimetic structures with tunable characteristics, controlled release of bioactive agents, and versatility in material selection positions them at the forefront of advancements in regenerative medicine. As researchers continue to refine and expand upon this technology, the potential for ramé-hart coaxial spinnerets to revolutionize the field of tissue engineering remains promising.

1 Maria P. Nikolova, Murthy S. Chavali, Recent advances in biomaterials for 3D scaffolds: A review,
Bioactive Materials, Volume 4, 2019, Pages 271-292, ISSN 2452-199X, https://doi.org/10.1016/j.bioactmat.2019.10.005.


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Fine print: Limit one coupon code per order. Limit one use per customer. To receive the discount, order must be placed online at www.ramehart.us and paid for with a credit card. Enter the coupon code during checkout. All coupon codes above expire on 1-May-2024.


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