Biocompatible Pressure Sensors for various Applications

The IntraSense pressure sensor, which is only 220 µm wide, fits into the smallest 1 French catheters. With its wide pressure range of -300..500 mmHg, it can measure blood pressure as well as intracranial or bladder pressure quickly and directly on site. It is also offered as a calibrated version with amplified analog and I²C output. For rapid initial development steps, AMSYS also offers an evaluation kit with USB connection and software for initial measurements of pressure and temperature for prototyping.

With the 1620, AMSYS also has a relative pressure sensor in its portfolio that was developed for one-time use, e.g. in dialysis machines oroxygenators. These low-cost sensors cover the pressure range up to 300 mmHg typical for medical applications. Just like the other pressure sensors presented, it can be sterilized with ETO.

The small barometric sensor MS5839 with a footprint of only 3.3 x 3.3mm² is universally applicable and with its biocompatible gel can also be used in anesthesiology, for example. Via its I²C interface, the MS5839 delivers the measured pressure and temperature signal with high precision and 24 bits. In addition, 6 individual coefficients are stored in the module, which allow software correction for pressure and temperature measurement by an external microprocessor.

The three sensors presented are all coated for biocompatibility and suitable for direct contact with bodily fluids; in the case of the IntraSense for 24 hours,in the case of the 1620 and MS5839 even for a full 7 days. AMSYS will present these and other sensors for medical products at Compamed in November in Düsseldorf, hall 8A, booth 8AM04. In addition, they are of course available via www.amsys-sensor.com.