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ORGAR

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RELIABLE RESPIRATORY SIGNALS FOR A SAFE STRATEGIC CLINICAL DECISION

In the context of a withdrawal decision for a patient in clinical difficulty, the ORGAR system developed by Pierre-Yves Guméry, researcher, and Laurent Heyer, resuscitator, will provide doctors with fundamental information based on observing the proper coordination of muscle activity in the whole respiratory system.

» Description and functionalities

Non-invasive system for gathering and processing electromyographic signals on the overall inhalatory neuromuscular activity of the patient, via the surface

» Technology

- EMG microsensors
- Clinical model based on the rhythmic inhalatory activity of the muscles in the wings of the nose and the temporal structure of the inhalatory activity according to a rostro-caudal gradient.

» Performances

- Early diagnosis of recovery of normal respiration in the patient.

- Reduction of intubation time and risks of complication under ventilation.

- Powerful software

» Target

Patients in withdrawal situations who present problems of vigilance

» Application areas

- Resuscitation
- Anaesthesia

» Laboratory

Techniques de l’Ingénierie Médicale et de la Complexité - Réf090502_Gumery_ORGAR2 _offre_29062010

» Interview with Pierre-Yves Guméry and Laurent Heyer

What is the motivation for your research work?

LH: As a resuscitator, I have had opportunities to observe that patients with vigilance problems presented difficulties in coordinating respiratory muscle activity. However this parameter was not taken into consideration in extubation decisions. There is a lack of expertise, probably because there is a problem with objectivity in decision-making. I had been looking for a long time to obtain robust EMG surface signal measurements that could be used in a clinical situation.

P-YG: For my part, as a signal processing specialist, I am concentrating on developing methods for extracting information from physiological signals which are difficult to interpret. Scientifically speaking, EMG signals have been used for a long time, but there is no method for using them in a clinical situation. I thought it would be interesting to rehabilitate them by using robustness strategies.

How could a company use your innovation?

P-YG: We are bringing technological innovation to a therapeutic strategy.

LH: From the industrial point of view, Orgar is a tool for exploring respiratory function and a tool that can be incorporated in a ventilator. The added value lies in the therapeutic direction provided. This is a tool for decision-taking and for monitoring and controlling the ventilator. For the moment, doctors involved in withdrawal place their trust in vigilance indicators that can often be persistent. As a diagnostic tool, ORGAR will enable time to be saved.

What is the status of your project?

We are in the clinical validation stage. A harmfulness investigation is in progress, aimed at showing that doctors who use information supplied by ORGAR are not harming their patients’ chances.

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