Delo adds to its medical portfolio with new adhesive for biosensors

1 min read

Delo Industrial Adhesives has developed a new medical-grade adhesive, Delo Monopox MG3727, as it continues to grow within the medical electronics industry.

Exploded view of biosensor electrode with adhesive application regions highlighted in magenta
Exploded view of biosensor electrode with adhesive application regions highlighted in magenta - (Image credit: Delo)

Based on a consumer electronics adhesive featuring low temperature curing and drop resistance, this adhesive expands upon its capabilities with non-cytotoxicity, thus meeting the standards (DIN EN ISO 10993-5) necessary to classify it as a medical-grade adhesive.

Delo Monopox MG3727 is tailored ideally for use in the assembly of biosensors, including ECG/EKG electrodes. As stainless steel is often central to the construction of such equipment, Delo ensured that the new adhesive performs well with this substrate material, testing at a compression shear strength of 11 MPa.

According to Delo, this one-component, solvent-free and humidity-resistant adhesive features a low Young’s modulus of 160 MPa, making it resistant to cracking under sudden impact, such as if a sensor falls to the ground. A low glass transition temperature of -52 °C helps the adhesive retain its properties across the range of temperatures at which a sensor may be utilised.

Delo Monopox MG3727 is said to take 10 minutes to fully cure via a low heat of 90 °C, making it optimal for temperature-sensitive substrates. With a viscosity of 30,000 mPa·s, it can be applied via needle dispensing for optimal production efficiency. Blue fluorescence allows for increased process control of dispensing accuracy.

“This is just one of many medical-grade materials we have planned,” said Günther Witek, product manager for medical electronics at Delo. "And, more importantly, we will bring our semicon manufacturing, miniaturisation, and equipment expertise to market, enabling our customers to produce astonishing new products.”