The SmartLab Instrumentation System is a flexible measurement device for monitoring respiratory signals. This modular system, from Hans Rudolph, includes Insight software and is configurable for a variety of measurements. The base module consists of a main system circuit board that accepts up to four sensor modules. It also has an input for a Nonin xPod oximeter and a Masimo IRMA CO2 concentration sensor. An optional internal oxygen concentration sensor is also available.
Digital I/O ports with eight outputs and four inputs can be connected to a valve controller or other device that can accept TTL level digital signals. An optional analog output module is available for retransmitting up to four measured or calculated values.
Sensor modules include pressure sensors for use with Hans Rudolph, inc. pneumotachs, pressure sensors for airway pressure, and absolute pressure sensors for barometric pressure or altitude measurements. (A pneumotach − a light screen inserted in an airflow − creates a known pressure drop directly proportional to the air speed generated, in this case, by a patient inhaling and exhaling.) A voltage input module is available for measuring analog signals from other devices. Internal temperature and humidity sensors are included while an external one for temperature and humidity is optional. Other modules are coming and custom designed modules can be developed when needed.
Sensors are shipped calibrated and can be installed in the field as needed. Each sensor module holds up to five calibration files. For example, when a sensor measures flow with a pneumotach it can be calibrated to work with several pneumotachs, each with a unique calibration. The software lets users select the calibration table for the setup being used.
Data is transmitted to a PC over a USB connection or a wireless RF connection. Up to eight data signals can be transmitted at a sample rate of up to 200 Hz. The PC software will display the data on up to eight graphs with up to three signals/graph. Trend graphs can also be configured to display slower data signals or calculated values over a longer period of time. An XY graph is provided for displaying graphs such as a flow-volume loop.
Hans Rudolph
[Want to stay more on top of MDO content? Subscribe to our weekly e-newsletter.]