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Sono-Tek’s in-house laboratory services offer the expertise of our engineering and technical staff in resolving process issues and tailoring our technology to meet the needs of our customers.
Accumist for Guide Wire Coating
Ultrasonic Spray Solutions for Precision Medical Device Coatings
Medical devices such as guide wires and catheters carry risks of causing complications such as bacterial infection, blood clots and tissue trauma. Coating these devices with lubricious, antimicrobial, hydrophilic, anti-thrombogenic or anti-encrustive coatings can alleviate these risks through the slow release of drugs or permanent ultra-thin coatings. As the world’s leader in stent coating technology, with 30 years of technical expertise in ultrasonic spray technology, and the most advanced precision medical device coating systems on the market, Sono-Tek now offers systems for coating guide wires and catheters.
- Sono-Tek ultrasonic nozzles have industry proven success in producing high quality thin film coatings
- Small ultrasonically generated drops produce excellent uniform coverage without excess material
- Soft, low-velocity atomized spray can be targeted with unmatched precision
- Minimal overspray (minimal waste)
- Wide range of delivery rates from 1-100 ml/hour
- Self-cleaning ultrasonic nozzle prevents clogging
- All system components are compatible with the typical solvents and polymers used in coating medical guide wires
Operating Principle
The AccuMist™ system combines Sono-Tek’s unique Microspray ultrasonic atomizing nozzle with low-pressure air to produce a soft,highly focused beam of small spray drops.
Compressed air, typically at 1 psi, is introduced into the diffusion chamber of the air shroud, which produces a uniformly distributed flow of air around the nozzle stem.
The ultrasonically produced spray at the tip of the stem is immediately entrained in the low pressure air stream. An adjustable focusing mechanism on the air shroud allows complete control of spray width.
The spray envelope is bow-shaped. The width of the bow is controlled by moving the focus-adjust mechanism in and out.
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