PortaMon

Measures local tissue saturation index (TSI), oxy-, deoxy- and total hemoglobin in muscle tissue.

  • The gold standard device in muscle oxygenation measurements

  • Enables you to get insight into local oxygen consumption, blood volume, and blood flow in any environment

  • Truly portable and wireless for measurements in any setting

  • Improved signal quality with built-in short separation channels & integrated multi-power gain control

  • Possibility of integrating motion sensors

  • Easy to combine multiple devices with perfect synchronization to measure various muscles simultaneously

  • Sweat-proof makes it durable for sports science or rehabilitation research

  • Possibility to restore data using the data repair function

The unrivaled leader

in muscle oxygenation

measurements

NIRS made easy

NIRS device for muscle measurements

The PortaMon offers the same possibilities as larger NIRS devices. Next to the standard concentration changes of oxy-, deoxy- and total hemoglobin, this device also provides a value of tissue saturation: the percentage of oxygenated hemoglobin. It enables you to perform wireless online measurements using Bluetooth, for instance for use in the lab. In case of experiments in more realistic or outdoor settings, the PortaMon can also store data locally, which is ready for download right after measuring.

What's Improved in the PortaMon MKIII

  • More ergonomic design for better fit on every muscle

  • Superior features, such as integrated short-separation channel (SSC) and multi-power gain control, for improved signal quality

  • 10-times higher sample rate to have the possibility of acquiring additional signals

  • Improved user interface and haptic feedback on device status

  • Possibility to add an integrated motion sensor to simultaneously record movement data

  • Sweat-proof to ensure measurements during any type of exercise

  • Delivered with specially designed accessories to provide better fixation and light protection 

portamon applications

The PortaMon is a wireless NIRS device that is specifically designed for muscle research. Due to its portability and ease of use, the PortaMon can be used in a huge range of research areas, in athletes, healthy and clinical population. It is frequently applied in sports and exercise sciences in participants of all ages. The PortaMon can also be used in clinical applications, for instance cardiorespiratory or urology research, or in studies assessing the effects of hypoxia.

A recent review by Perrey et al. (2024) provides an updated look at how NIRS can measure muscle oxygenation non-invasively.

All publications with the PortaMon can be found on our publications page.

Built-in short separation channels to measure from superficial tissue layers.

Short separation channels, which measure superficial tissue layer data, are commonly used in brain measurements to improve signal quality. However, also when measuring from muscles, adipose tissue can be a challenge when acquiring muscle oxygenation with NIRS. Additionally, adipose tissue layer thickness can differ between individual subjects and measurement location.

Next to three long, the PortaMon now also includes three short channels with an inter-optode distance of 10, 15 and 20 mm. This enables to gather data from superficial tissue, which then may be used to correct for adipose tissue, improving data quality and reliability.

Integrated multi-power gain control, assuring highest signal quality.

When performing muscle measurements, it is important to be able to measure from subjects of different origins, ages and sexes.

To ensure optimal signal quality over a wide range of participants, the PortaMon MKIII has a built-in multipower gain control. This enables you to measure at 4 different power levels. The auto-power function adjusts light output, assuring reliable data on any individual subject or measurement location.

Enhanced data options. Unique solution for any research purpose.

The PortaMon measures changes in hemoglobin from six channels with various distances, as well as absolute value of TSI. Hence, it enables data output of a larger volume per muscle. It is delivered with OxySoft, our proprietary NIRS data acquisition software. OxySoft allows analysis and / or data export of changes in concentration or optical density to various file formats. Therefore, the PortaMon is the perfect fit for any research investigating muscle or tissue oxygenation.

Compare multiple muscle performances in one go.

You can easily measure with more than just one PortaMon to monitor the oxygenation of different muscle areas or participants simultaneously. Consider connecting multiple PortaMon devices at the same time, as our software OxySoft allows for perfect synchronization.

The PortaMon can also be combined and synchronized with our (f)NIRS devices for measuring the brain, by simply connecting multiple different Artinis devices to our software OxySoft.

Simultaneous brain & muscle measurement with NIRS
Beyond the Brain: Unveiling the Mind-Muscle Connection with Simultaneous NIRS

NIRS can be applied on any tissue enabling to measure brain and muscle oxygenation simultaneously. Read this blogpost to learn more about application areas employing NIRS on muscle and brain at the same time, recently published literature and solutions Artinis offers to make this possible.

Read More →

The near infrared spectroscopy technology

How it works

Optical oximetry and near-infrared spectroscopy (NIRS) in particular a tool for assessing the oxygenation status and hemodynamics of various organs, e.g. muscle and brain non-invasively. It relies mainly on two characteristics of human tissue. Firstly, the relative transparency of tissue for light in the NIR range, and secondly the oxygenation-dependent light absorbance of hemoglobin.

Read more >

Real-Time Processing of NIRS Data

Software

All of our devices are bundled with OxySoft. OxySoft is our dedicated software application used to collect, store, view, and analyze all necessary data from the PortaMon. This user-friendly software is developed by Artinis and is highly customizable to individual requirements. OxySoft provides in real-time the calculation of oxy-, deoxy-, total hemoglobin and Tissue Saturation Index (TSI).

PortaMon research package

Designed, produced and manufactured in The Netherlands, EU.

What’s in the box

  • PortaMon device(s) as per request

  • OxySoft, our proprietary data analysis software

  • Analyzing unit with pre-installed software

  • A strong and sturdy Peli case

  • License key

  • Bluetooth dongle

  • Batteries and charger

  • SunShield stickers and straps

  • User Instructions in English

  • Support in setting up your research

Marco Ferrari and Valentina Quaresima, NIRS and fNIRS pioneers at the University of L'Aquila, Italy.

“Artinis Medical Systems was founded in 2002 as a spin-off of Radboud University Nijmegen. At that time, a 12-channel fNIRS prototype built by Dr. Colier and co-workers at Radboud University enabled my group to be the first in Europe to collect real-time cortical oxygenation maps of cognitive and motor tasks.

With extensive knowledge of tissue optics and experience in solving biomedical challenges, the people at Artinis have been developing top-quality fNIRS instruments and oximeters–including wearable and wireless devices– for over a decade. We can attest that their technical and scientific support is unbeatable.”

The MediBrite is a CE marked medical device according to Medical Device Regulation (EU) 2017/745.

Other Artinis NIRS products are intended to be used for research applications only. Other Artinis products are not sold as Medical Device as defined in Medical Device Regulation (EU) 2017/745. Our products are not designed or intended to be used for the diagnosis or treatment of disease.