Ultrasonic spraying machine for PC injectors

Ultrasonic spraying machine for PC injectors – Cheersonic

PC injectors (polycarbonate injectors) are core precision drug delivery devices in clinical diagnosis and treatment. Their core function is to achieve precise drug aspiration, injection, and high-pressure drug delivery using the high-rigidity, high-transparency PC material. They possess characteristics such as high pressure resistance, durability, high transparency, and dimensional stability, making them suitable for routine injections as well as special scenarios such as high-pressure contrast imaging and bone cement delivery. They are hailed as a “safe carrier for precise clinical drug delivery.” They are widely used in departments such as internal medicine, surgery, radiology, and interventional operating rooms in hospitals, suitable for routine drug injections, high-pressure contrast agent injections, and postoperative drug infusions. They directly affect drug delivery accuracy, drug purity, and patient safety, making them an indispensable key device in modern clinical diagnosis and treatment. PC syringes are subject to prolonged contact with various medications and contrast agents, withstand high-pressure injection, and must be compatible with multiple sterilization methods such as ethylene oxide and steam. Therefore, the coating requires extremely high performance in terms of pressure resistance, leak prevention, antibacterial properties, and adhesion to the PC substrate. Chifei’s ultrasonic spray coating machine provides professional spraying treatment, a core process for optimizing performance, overcoming inherent shortcomings, and meeting stringent clinical drug administration requirements, demonstrating Chifei’s professional strength in the field of medical injection device spraying.

Medical PC syringes must strictly adhere to medical device industry standards, primarily complying with ISO 10993 biocompatibility standards and ISO 13485 medical device manufacturing specifications. They must also meet the requirements of YY/T 0573.2—2025 “Disposable Sterile Syringes Part 2: Power-Driven Injection Pump Syringes” and GB 15810 “Disposable Sterile Syringes,” satisfying core indicators such as non-cytotoxicity, non-sensitization, high pressure resistance, drug corrosion resistance, and sterility. They must be able to stably withstand high-pressure injection, and after ethylene oxide sterilization, have a sterility assurance level (SAL) ≤10⁻⁶ with no coating peeling and no release of harmful substances, ensuring patient safety. Made of 100% medical-grade polycarbonate (PC), using premium medical-grade Mollocene series raw materials, it boasts high transparency, high strength, and excellent toughness, allowing for clear observation of the drug’s state. It is also durable and suitable for high-pressure injection scenarios. The core structure is available in two-piece and three-piece designs. The three-piece design consists of an outer casing, core rod, and piston, while the two-piece design consists of an outer casing and core rod. Mainstream sizes range from 1mL to 50mL, selectable according to dosing needs. The tube body features clear graduations for precise dosage control, making it compatible with infusion pumps, high-pressure injection equipment, and other clinical devices. However, native PC syringes still have significant drawbacks: insufficient surface lubrication, high core rod pushing resistance leading to dosage deviations; drug residue easily remaining on the inner wall, causing waste and affecting subsequent use; prolonged contact with corrosive drugs can cause surface aging; and leakage at the sealing points is prone to occur during high-pressure injection. Therefore, professional spraying using a Chifei ultrasonic spraying machine is a crucial step in ensuring its quality.

With its core technological advantages of precise atomization, uniform film formation, non-destructive spraying, and high material utilization, the Chifei ultrasonic spraying machine is perfectly suited to the characteristics of PC syringes, which have precise structures, high pressure resistance, and extremely high requirements for coating uniformity and adhesion. It can accurately cover the inner wall of the syringe jacket, the surface of the core rod, the piston, and the interface. It is suitable for spraying special medical coatings such as silicone oil-free lubricating coatings, high-pressure sealing coatings, and nano antibacterial coatings. It effectively solves the pain points of traditional spraying processes, such as uneven coating, poor adhesion, easy peeling, and insufficient lubrication. At the same time, it preserves the high transparency, high pressure resistance, and dimensional accuracy of PC syringes to the greatest extent, without affecting the observation and administration accuracy of the liquid, and without clogging the injection channel. Its working principle involves using 50kHz-120kHz high-frequency ultrasonic vibration to atomize a specialized medical PC-compatible coating material into uniform micron-sized droplets with a diameter of 1-50μm. These droplets are then precisely deposited onto key parts of the syringe using a “soft landing” method, achieving a coating uniformity of over 95%, controllable and dense thickness with a fluctuation error of ≤±1μm. This allows for precise control of ultra-thin nano-coatings, achieving a material utilization rate of over 90%. It ensures high-pressure resistance, leak prevention, antibacterial properties, and lubrication without compromising the biocompatibility and structural stability of the PC substrate, meeting the core requirements of “precision, safety, and efficiency” in clinical drug administration. Combined with plasma activation treatment, the adhesion between the coating and the PC substrate is significantly improved, preventing coating detachment caused by drug erosion, high-pressure injection, or sterilization. It is suitable for various clinical scenarios, including routine injection and high-pressure drug administration.

Chifei’s ultrasonic spray coating machine employs a rigorous and standardized process for coating PC syringes, adhering to all relevant requirements and industry standards for medical device production. It balances the syringe’s drug delivery characteristics with clinical compliance needs, meeting Class 10000 cleanroom production requirements and conforming to GMP cleanroom production standards. The coating uses a specialized medical-grade sterile formula, is non-allergenic and non-cytotoxic, complies with ISO 10993 biocompatibility standards, and is compatible with various sterilization methods such as ethylene oxide and steam, ensuring stable coating performance throughout its shelf life. It also avoids reactions with various medications and contrast agents, does not produce harmful substances, does not contaminate medications, and does not affect drug efficacy. Furthermore, it is free of harmful plasticizers such as DEHP and BPA, meeting clinical safety standards. The silicone-free lubricating coating improves the sliding performance of the syringe plunger, ensuring smooth drug delivery, avoiding dosage deviations, and preventing adverse reactions caused by silicone oil migration. The high-pressure sealing coating enhances the sealing performance of the injection site, preventing leakage of medication during high-pressure injection and ensuring treatment safety. The nano-antibacterial coating effectively inhibits the growth of pathogenic bacteria such as Staphylococcus aureus and Escherichia coli, reducing the risk of cross-infection. Before spraying, the PC syringe components undergo ultra-clean pretreatment to remove surface oil, impurities, and processing residues. Dehumidification is also performed to address the hygroscopic nature of PC material. During spraying, ultrasonic parameters are precisely adjusted to control the droplet deposition rate, ensuring no missed sprays, no bubbles, no accumulation, and no impact on syringe transparency and scale clarity. After spraying, a stable functional layer is formed through low-temperature curing, followed by rigorous testing for coating adhesion, high-pressure resistance, and sealing to ensure zero defects in the product.

PC syringes treated with Chifei ultrasonic spraying exhibit significantly improved overall performance, excellent lubrication, smooth and unrestricted plunger movement, and precise dosage control to avoid dosage deviations. They also boast outstanding high-pressure sealing performance, stably withstanding high-pressure injection without leakage, making them suitable for special scenarios such as high-pressure contrast agent injections. Furthermore, they exhibit significant antibacterial properties, effectively inhibiting the growth of pathogenic bacteria, meeting clinical infection control requirements and reducing the risk of cross-infection. The coating has strong adhesion, exhibiting no delamination or damage after repeated sterilization and use, demonstrating stable performance and minimizing drug residue on the inner wall, thus reducing drug waste. Compared to traditional spraying processes, Chifei ultrasonic spraying eliminates splatter waste, precisely covering the syringe’s inner wall and interfaces, reducing nozzle clogging and maintenance costs. This effectively lowers production costs for medical syringe manufacturers, enhancing product competitiveness. It also caters to the large-scale production needs of various specifications, including two-piece and three-piece PC syringes, and is compatible with both disposable and reusable types.

In clinical applications, PC injectors treated with Chifei ultrasonic spraying have gained widespread recognition from clinical medical staff and medical device manufacturers. They are suitable for various clinical scenarios, including routine drug injection, high-pressure contrast injection, postoperative drug infusion, and bone cement delivery, and are particularly suitable for interventional treatments, intensive care, and radiographic imaging where high precision and sealing performance are required. This significantly improves the safety and efficiency of clinical drug administration, reduces medical risks caused by drug leakage, dosage deviation, and cross-infection, alleviates the workload of medical staff, and drives the PC injector industry towards higher precision, higher pressure resistance, and higher safety. In summary, Chifei’s professional ultrasonic spraying treatment perfectly solves the core technical pain points of insufficient lubrication, easy leakage, and easy residue in PC injectors. It not only meets the stringent requirements of precise clinical drug administration but also demonstrates Chifei’s professional strength in the field of medical injection device spraying, providing reliable technical support for the high-quality development of the clinical diagnosis and treatment industry.

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.

Chinese Website: Cheersonic Provides Professional Coating Solutions