Table of Contents
Assignment background
In the field of diabetes management, closed-loop systems including blood glucose monitoring devices, smart blood glucose meters, and even smart pumps that calculate and inject insulin doses are widely used. These wearable medical devices require precise material application to extremely small components to ensure reliability and safety. In particular, the gearbox components inside insulin pumps require the accurate and uniform application of high-viscosity grease in extremely small volumes (0.7 microliters). However, conventional application methods pose the following challenges:
- Lack of precision in minute dispensing
It was difficult to achieve stable dispensing of the extremely small volume of 0.7µL, which resulted in variations in the amount of application, and there was a risk of component wear and malfunction. - Difficulty in controlling high viscosity materials
Because the viscosity of the grease is high, it is difficult to control the flow rate stably, and liquid pools and air bubbles tend to occur when the grease is discharged. - Lack of uniformity and stability
Pulsation and uneven discharge occur during continuous application, which is a major obstacle to ensuring the long-term reliability and safety required for medical devices.
Benefits
The introduction of the eco-PEN positive displacement high-precision micro-dispenser has made it possible to dispense extremely small volumes of high-viscosity grease onto the gearbox components inside continuous glucose monitoring (CGM) devices, which was previously difficult, and has resulted in the following benefits:
- High-precision control
Even minute amounts of 0.7µL can be dispensed stably and reproducibly, forming a uniform layer of grease inside the gearbox of a CGM device, ensuring reliable lubrication even in the limited space typical of miniaturized devices. - Stable dispensing of high viscosity liquid
The positive displacement system enables continuous discharge without pulsation, significantly reducing pooling of liquid and air bubbles when applying grease. This ensures operational stability and long-term durability in medical equipment with precision mechanisms. - Improved product reliability
Improved application accuracy prevents wear and malfunction of parts, ensuring the high reliability and safety required for CGM devices used daily over the long term. As a result, medical device manufacturers are able to reliably clear quality standards and improve their brand value.
Introduced products
Positive displacement high-precision microdispenser eco-PEN300/450/600/700 3D
The internal structure of continuous glucose monitoring (CGM) devices requires the consistent application of minute amounts of high-viscosity grease to gears and moving parts.
The eco-PEN300/450/600/700 3D are high-precision dispensers developed to meet the strict requirements specific to medical wearables. They maintain dispensing accuracy even with extremely small volumes, such as 0.7µL, ensuring product reliability and durability over the long term. They can handle a wide range of fluids, from low to high viscosity, making them suitable for a variety of applications, including not only grease but also adhesives and lubricants.
- Achieves highly accurate minute dispensing of ±1%
- Stable, continuous discharge without pulsation ensures uniform application to gear parts inside the CGM
- The suck-back function prevents dripping and ensures cleanliness even for minute parts.
- Flexible flow rate settings (ml/min, g/min) allow compatibility with a wide range of medical devices
- Stable control of extremely small dispensing of 0.7µL realizes the high precision and reliability required for CGM devices.
