Medical Wearable Dispensing Application

Dispensing of a high viscous grease with an eco-PEN330 preeflow dispenser

Most people think of smart watches when it comes to wearables. But there is much more! On the market of consumer electronics, you can find for example hearables, augmented & virtual reality glasses or smart rings. In the sports sector there are fitness trackers, sports watches, smart shoes, and smart belts. An obvious trend in fashion is smart clothing and e-textiles. But even that is only the tip of the iceberg.

One very important market of wearable devices is medical and healthcare. Here wearables already fulfill diverse functions of medical devices. Monitoring vital functions like heartrate, oxygen level, body temperature and respiratory rate are already standard applications. State-of-the Art wearables have a great reliability, precision and are small in space. This makes a medical wearable a multifunctional tool for the medical sector.

Especially the wear comfort, the flexible usability and the connectivity of wearables makes them superior to conventional medical devices. These technology advancements are possible through progress in sensor technology, power management and transmitter technology.

To achieve these advancements, the production method must also make progress - and with it the fluid management. In most production processes fluids must be applied fully automated with a high degree of repeatability. Processed fluids are for example adhesives, silicones, thermally and electrically conductive materials or greases.

Several dispensing applications for medical wearables are done with ViscoTec’s preeflow dispensers.

▪ Batteries are bonded inside the housing.

▪ In the power management thermally, conductive pastes are applied.

▪ Processors are coated or underfilled with an appropriate resin.

▪ RF-Modules are attached and bonded, also with electrically conductive materials if necessary.

▪ Actuators like displays are sealed and bonded.

▪ Sensors are sealed, encapsulated, and bonded.

▪ In general, Micro-Electronic-Mechanical Systems (MEMS) are bonded or encapsulated with a suitable adhesive.

The proven ViscoTec endless piston principle enables a purely volumetric and pulsation-free dispensing. Whether for low or high viscosity materials, with or without filler content. The high repeatability of more than 99 % ensures an optimal solution for typical dispensing applications in the production of medical wearables.