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MediCoat DES 1000 Benchtop Stent Coating System
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A turn-key solution for the laboratory in the development of processes for coating arterial stents with polymers containing anti-restinosis drugs.
This new lab-friendly system can be configured with Sono-Tek's industry proven MicroMist™ or AccuMist™ ultrasonic nozzle, both of which are currently in use by many top stent manufacturers. The MicroMist nozzle produces a very thin, straight spray pattern (with a diameter of 0.010”- 0.030”), while the AccuMist™ nozzle produces a slightly wider, bow shaped spray pattern (with a diameter of 0.070”- 0.250”). Both nozzles produce a very precise, repeatable, controllable spray.
This convenient benchtop system incorporates a programmable stent movement and rotation device, located in an easily accessible spray area that allows for manual loading and unloading of stents in a controlled environment.
- Sono-Tek nozzles have industry proven success for producing high quality stent coatings
- Integrated control of the nozzle, liquid delivery, and stent movement/rotational device
- Soft, low-velocity spray can be targeted with unmatched precision
- Small ultrasonically generated drops provide excellent penetration and inhibit webbing
- Minimal overspray (minimal waste)
- Wide range of delivery rates from 0.3-100 ml/hour
- Self-cleaning ultrasonic nozzle prevents clogging
- All system components are compatible with the typical solvents and polymers used in stent coating
(solvents such as:THF, acetone,DMAC, toluene, chloroform, polymers: urethanes, polycarbonates, silicones, styrenes)
Operating Principle
The MediCoat™ Benchtop Stent Coating system combines Sono-Tek's unique microspray atomizing nozzle with low-pressure gas to produce a soft, highly focused beam of atomized spray drops. Compressed gas, typically at 1 psi, is introduced into the diffusion chamber of the air shroud, producing a uniformly distributed flow of air around the nozzle's atomizing surface.
The ultrasonically produced spray created is immediately entrained in the air stream. An adjustable focusing mechanism on the air shroud allows complete control of the spray width.
The customer has the option of attaching a custom stent holding device onto the rotating mandrel. The stent is manually loaded onto the stent rotation device and is rotated at a fixed speed, controlled by the user. The stent moves horizontally side-to-side beneath the target area. The number of horizontal passes made are programmable.
A low-velocity exhaust located below the spray area maintains a negative air pressure to assure that any unwanted mist beyond the target area is removed. The system's unique glove box design allows for safe and convenient access to the stent load and unload area. Large, unobstructed viewing windows and high-intensity internal LED lighting allow for easy observation. With integrated controls for triggering the ultrasonic atomization, liquid delivery and stent movement, the MediCoat™ DES 1000 Stent Coating System provides a complete solution for developing a stent coating process.
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