Today’s medical device OEMs look to improve performance levels and extend operating lifetimes in even smaller form factors. As medical device product lifecycles shrink, the need for innate RoHS compliance at the component level helps speed time to market. Given these challenges, OEMs are turning to safe, high-performance semiconductor technologies to replace traditional lamps for fast, accurate absorption analysis without the need for cooling. Today’s capnography device engineers spec in the latest MIR LED technologies to deliver on promises of high sensitivity for real-time, precise CO2 detection.
Carbon dioxide has absorption bands in the near-IR, but the band near 4.26 µm is orders of magnitude stronger.
What characteristics matter the most when it comes to mid-IR LEDs and detectors?
Since capnography monitors measure levels of carbon dioxide absorption, the data significantly affects patient treatment and outcomes. It’s critical for the provider to receive accurate, real-time results to properly assess the patient’s condition. Precision, which equates to a lower margin of error, relies on the sensitivity levels of the detector inside the monitor. Maximum precision levels require mid-IR LEDs to deliver 3+ micron light and achieve parts per million sensitivity levels (assuming proper calibration).
While infrared detectors are highly stable and perform as needed, they often contain hazardous substances like lead, cadmium, and mercury. Medical device OEMs must meet stringent compliance with a gamut of regulations, so designing products with RoHS-compliant components like InAsSb helps avoid lengthy permitting processes, ultimately reducing time to market.
As MIR LEDs become more powerful and efficient sources, an emerging generation of compact MIR detectors offers effective performance. Hamamatsu’s line of mid-IR LEDs features high peak power/output, high reliability, and low power consumption for the most efficient CO2 absorption measurement. Flexible configurations meet your needs as detectors are available as an SMD (surface mount device) or mounted to a PCB board.
If you need help optimizing the performance of your next capnography monitor, turn to Hamamatsu. Compare our specs and talk to our experts today.
Learn more about how our IR detectors and IR light sources are used for gas analysis.
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