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Accurate control of oxygen delivery is defined as an essential performance requirement in modern ventilator systems, where the fraction of inspired oxygen (FiO2) must be precisely regulated and continuously monitored across a wide operating range. Errors in oxygen delivery, whether under- or over-supply, can lead to clinical risks such as hypoxemia or excessive oxygen exposure, which may contribute to oxidative stress and associated lung injury. Under real operating conditions, however, oxygen concentration is not static but continuously affected by flow variations, gas mixing, and control adjustments.
Under these dynamic conditions, oxygen measurement becomes a time-sensitive and stability-critical task. Rapid fluctuations in flow and gas composition require sensors to respond quickly while maintaining consistent accuracy, without being affected by vibration, environmental changes, or interference from other gases and moisture.
This places higher demands on oxygen sensing within the system, particularly in applications requiring reliable real-time monitoring.
Conventional oxygen sensing approaches, including paramagnetic oxygen analysis, have been widely used in ventilator systems; however, in increasingly dynamic operating environments, alternative sensing technologies are being explored to meet higher requirements for responsiveness, precision, and stability.
In response to the growing precision and reliability demands of high-end ventilator systems, Cubic, a leading manufacturer of gas sensors and gas analyzers, has developed Gasboard-2512, a compact laser-based oxygen sensor designed specifically for medical applications, delivering high-precision and stable oxygen measurement in dynamic respiratory environments.
Based on Tunable Diode Laser Absorption Spectroscopy (TDLAS) technology, Gasboard-2512 measures oxygen concentration by detecting the absorption of a laser wavelength specifically absorbed by oxygen molecules, enabling accurate oxygen measurement within complex respiratory gas mixtures with strong resistance to interference from other gases and humidity.
In mechanical ventilation, respiratory gas conditions shift continuously with each breathing cycle, making breath-by-breath oxygen monitoring essential for real-time patient management and system feedback.
With a response time of 200 ms (@ 250 mL/min), Gasboard-2512 is capable of tracking oxygen concentration changes on a breath-by-breath basis, supporting real-time and accurate FiO2 monitoring under dynamic respiratory conditions.
The wavelength of the laser diode in Gasboard-2512 remains stable over time, as it is determined by the physical properties of the semiconductor material. The inherent wavelength stability ensures that the sensor maintains consistent oxygen detection performance across its operational lifetime without the need for periodic recalibration. In contrast, conventional sensing technologies relying on mechanical or thermally sensitive components are subject to performance drift over time, requiring scheduled recalibration to maintain measurement accuracy, adding to service complexity and device downtime.
As a solid-state optical device, Gasboard-2512 contains no moving or mechanically suspended components. The laser beam passes through the sample gas along a fixed optical path, and the measurement is not affected by physical disturbance or orientation variation. This makes Gasboard-2512 suitable for use in transport ventilators and other applications where mechanical stability cannot be guaranteed, conditions under which sensing technologies that rely on mechanically suspended assemblies are prone to measurement inconsistency.
Considering the space requirements of modern ventilators and anesthesia machines, Gasboard-2512 is developed for seamless integration into medical device platforms. At 45×31×30.5 mm, the sensor accommodates tight layout requirements without compromising measurement performance, making it suitable for both stationary and portable ventilator platforms. Digital output via UART enables direct interface with main system controllers without additional signal conditioning.
As ventilator systems continue to advance, the performance of individual sensing components becomes increasingly consequential to overall system reliability and patient outcomes. With a service lifetime of more than 10 years, Gasboard-2512 is designed to remain a stable and dependable part of that system throughout the full operational lifecycle of the devices it serves.
With over two decades of experience in gas sensing technology, Cubic has developed deep expertise across NDIR, TDLAS, and ultrasonic measurement platforms. The foundation of self-developed sensing technologies ensures that products including Gasboard-2512 are built on a proven technical base, with measurement performance and long-term reliability validated through extensive application experience in medical and healthcare environments.
Cubic's in-house manufacturing of core sensors and key components, combined with rigorous quality control across optical assembly, calibration, and electronic integration, ensures consistency and traceability at every stage of production.
For medical device manufacturers seeking to integrate precision oxygen sensing into ventilator platforms, Cubic offers flexible OEM and ODM partnership models backed by vertically integrated capabilities. Self-developed TDLAS technology, in-house optical assembly, calibration, and electronic integration provide a controlled manufacturing foundation, while hardware design and software development teams support adaptation to customer-specific interfaces, form factors, and system architectures. From prototype validation through to full-scale production, Cubic's engineering team works alongside partners to meet the performance and traceability standards required in medical device development, enabling faster time-to-market without compromising measurement quality.
