Ultrasonic Spraying of Polymer Materials

Ultrasonic spraying technology is an efficient coating deposition method, which is particularly suitable for uniformly spraying polymer materials onto braided stents to enhance the friction of the stents. This method is particularly important in the manufacture of medical devices, especially when preparing implants such as vascular stents and bone stents that need to contact human tissue.

The principle of ultrasonic spraying is to use the high-frequency vibration of ultrasound to atomize liquid polymer materials into fine particles, which are then sprayed onto the surface of the braided stent. Due to the vibration of ultrasound, these particles can be more evenly attached to the fibers of the stent to form a dense coating. By adjusting the frequency and amplitude of ultrasound, the thickness and uniformity of the coating can be precisely controlled.

In medical implants, increasing the friction of the stent helps to improve the interaction between the stent and the surrounding tissue, and enhance the stability and biocompatibility of the stent. This is essential for preventing stent displacement and promoting tissue growth and integration. Polymer coatings can not only increase friction, but also improve the biological properties of the stent through surface modification, such as promoting cell attachment and proliferation.

In order to further increase the friction of the stent, the following measures can be taken during the ultrasonic spraying process:
1. Select polymer materials with higher friction coefficients, such as polyvinyl alcohol, polylactic acid, etc.
2. Adjust spraying parameters, such as the frequency and amplitude of ultrasound, to optimize the deposition rate and uniformity of the coating.
3. Pretreat the braided stent, such as increasing the surface roughness, to improve the bonding force between the coating and the stent.
4. Use multi-layer spraying technology to increase the thickness and friction of the coating by superimposing multiple layers of coating.
5. Add nanoparticles or other reinforcing materials to the polymer material to improve the mechanical properties and friction characteristics of the coating.

Through these methods, the friction of the braided stent can be effectively improved while maintaining its good biocompatibility and mechanical properties, thereby preparing high-performance medical implants that are more suitable for clinical applications.

About Cheersonic

Cheersonic is the leading developer and manufacturer of ultrasonic coating systems for applying precise, thin film coatings to protect, strengthen or smooth surfaces on parts and components for the microelectronics/electronics, alternative energy, medical and industrial markets, including specialized glass applications in construction and automotive.

Our coating solutions are environmentally-friendly, efficient and highly reliable, and enable dramatic reductions in overspray, savings in raw material, water and energy usage and provide improved process repeatability, transfer efficiency, high uniformity and reduced emissions.

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