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Ultrasonic Nozzles for Medical Device Coatings
Precision ultra-thin film coating systems for stents, catheters, balloons, endoscopic instruments, pacemakers, heart valves, glucose monitors, sensors, medical textiles, blood collection tubes, surgical implants, orthopedic implants, and diagnostic devices.
Examples of common medical solutions sprayed with Sono-Tek ultrasonic nozzles:
THF
Toluene
PTFE
Chloroform
Carbon Nanotubes
Thrombin
Heparin
Silver Nitrate
IPD
Silicone
EDTA
Materials sprayed include:
Antimicrobials
Anti-restinosis Polymers
Adhesives
Silicones
Carbon Nanotubes
Silver Nitrate
Bioactive Peptides
Blood Plasma
Hydrophylic/
Hydrophobic Films
Enzymes
Why Ultrasonic Nozzle Technology?
- Save up to 80% in coating material
- Precise control of spray shape and flow rate
- Minimal Overspray
- Non-clogging technology
- Tight drop distribution creates highly uniform thin films
- Choice of drop size depending on nozzle frequency
- Drop sizes range from 18 - 49 microns
- Excellent penetration & adherence to complex geometries without webbing
Operating Principle
The MicroMist™ 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. The small size of the nozzle tip and air orifice of the MicroMist™ produces a very fine, focused beam. An isolated hypotube delivers liquid to the nozzle tip while compressed air, delivered through the nozzle orifice at a fixed low pressure, shapes the atomized droplets into a very precise, targeted spray.
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.
When precision counts... better quality, enhanced performance coatings - Compared with air pressure nozzles, Sono-Tek’s ultrasonic nozzles create smaller, more uniform droplets, allowing better penetration of tight geometries common to implantable medical devices.
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 customers
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