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Bio-Monitor: Keeping an eye on astronauts' vital signs

Health science

The Bio-Monitor is an all-in-one wearable technology designed to fit into an astronaut's daily routine aboard the International Space Station (ISS) while monitoring and recording vital signs.

This system, which includes a smart shirt and dedicated tablet application, helps keep an eye on astronauts' health and enables new science by continuously measuring physiological data.


Doing science in space is no easy task. To participate in health experiments, astronauts must use several medical devices including electrocardiographs, blood pressure cuffs, fingertip oxygen saturation monitors, and ankle-bracelet activity sensors.

These devices are often bulky and invasive. Using them is disruptive and time-consuming.

The Bio-Monitor simplifies the process by combining numerous devices into one wireless, easy-to-use garment that records vital sign data. The system measures the following:

The smart shirt can also be worn during sleep and exercise. The system is designed to easily send information to the ground, where scientists can monitor the astronauts' health around the clock as they orbit the planet.

David Saint-Jacques explains how the Bio-Monitor smart shirt system keeps an eye on astronauts' vital signs in space



Using Bio-Monitor on the ISS allows scientists to:

 Impacts on Earth

This system has the potential to help Canadians who are bedridden, housebound, or living in rural communities with limited access to medical support. It can also be worn by workers in dangerous environments such as mines, industrial sites, or factories.

An early version of this technology is used to improve professional sports performance around the world. Champion Canadian skiers Chloé, Justine, and Maxime Dufour-Lapointe used the smart shirt to train at elite levels.

How it works

  1. The wearable technology system is designed to be as comfortable as a typical snug shirt. The shirt has adjustable straps to position small metal sensors against the skin in order to get a good reading.
  2. If an astronaut is about to exercise, he or she can use a tablet application to specify the type of activity and see his or her vital signs throughout the session.
  3. Once finished, the astronaut disconnects the battery pack and plugs it into a base, which downloads the data to Earth through the Station's communications system for scientific analysis.
David Saint-Jacques and Bio-Monitor

Canadian Space Agency (CSA) astronaut David Saint-Jacques tries the Bio-Monitor, a new Canadian technology, for the first time in space. The innovative smart shirt system is designed to measure and record astronauts’ vital signs. (Credit: CSA/NASA)


The Bio-Monitor system was launched into space in .


Carré Technologies of Montreal, Quebec, developed Bio-Monitor for the CSA. Three additional Canadian companies lent their support:

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