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Sleep apnea therapy devices

Sleep apnea therapy devices (CPAP devices) generate a slight overpressure in the respiratory tracts of sleep apnea patients, thereby preventing closure of the pharynx or respiratory arrest. In controlled CPAP devices, pressure sensors continuously monitor the therapy pressure, thereby improving the comfort and quality of the treatment.

The slight overpressure of a few millibars is generated by a centrifugal blower and supplied to the patient via a tube system and respiratory mask. However, the set therapy pressure of the CPAP device is influenced by the patient's breathing. The pressure drops during each inspiration and rises during each expiration. This leads to increased breathing effort for the patient and to a lower quality of therapy. Higher-quality devices therefore have a precise pressure sensor that continuously compares the actual pressure value with the specified target therapy value. Pressure deviations can then be compensated very quickly by dynamically controlling the blower output. The pressure stability is an essential quality feature and an important comparative parameter of controlled CPAP devices.

Our sensor solutions for sleep apnea therapy devices

First Sensor pressure sensors of the HDI and HCE series monitor the pressure value resulting at the device output or in the respiratory mask. Thanks to their very high accuracy and sensitivity, they detect pressure fluctuations in fractions of a millibar. In conjunction with modern control electronics and powerful blowers, the short response time of the sensors in the millisecond range enables pressure deviations to be compensated rapidly.

In order attain the highest accuracy with a total error spectrum better than ± 0.5 %FSS, First Sensor calibrates the HDI and HCE pressure sensors over the entire pressure and temperature range using an internal microprocessor. The processed sensor signal can be read out as a digital pressure value via an I²C or SPI bus interface. An analog voltage output signal is also available.

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First Sensor is one of the world's leading suppliers in the field of sensor systems. In the growth market of sensor systems, First Sensor develops and produces customer-specific solutions for the ever-increasing number of applications in the industrial, medical, and mobility target markets. Our goal here is to identify, meet and solve the challenges of the future with our innovative sensor solutions early on.
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In many market-specific applications, sensors are components that are critical to your success. First Sensor is the partner you need on projects that call for careful selection, customized adaptation and the highest standards of excellence. Our Business Units Industrial, Medical and Mobility are clearly aligned to the core markets of industrial applications, medical technology as well as automotive and transport.
Tailored Solutions
In the growth market of sensor systems, First Sensor develops and produces customer-specific sensors, electronics, modules and complex systems for the ever-increasing number of applications in the industrial, medical, and mobility target markets. As a solution provider the company offers complete development services from a first draft and proof of concept up to the development of prototypes and finally serial production. First Sensor offers comprehensive development expertise, state-of-the-art packaging technologies and production capacities in clean rooms from ISO class 8 to 5.
Tailored Solutions
In the growth market of sensor systems, First Sensor develops and produces customer-specific sensors, electronics, modules and complex systems for the ever-increasing number of applications in the industrial, medical, and mobility target markets. As a solution provider the company offers complete development services from a first draft and proof of concept up to the development of prototypes and finally serial production. First Sensor offers comprehensive development expertise, state-of-the-art packaging technologies and production capacities in clean rooms from ISO class 8 to 5.

Tailored Solutions
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Innovation, excellence, proximity – these are our values, our ambition, our drive. Anything less is not an option. Our sensor solutions stand for technical innovation and economic growth. As such, they form the basis for the development and application of new technologies in almost all areas of life. We aim to shape this future together with you.