Sensor for measuring tissue perfusion

Details Sensor for measuring tissue perfusion Sensor for measuring tissue perfusion

A - Human Necessities

61

B

A61B 5/0275 (2006.01) G01F 1/704 (2006.01)

Patent

CA 2385850

The invention relates to a method and a sensor for measurement of tissue perfusion. The sensor is provided with a reservoir (4) for a fluid or gaseous tracer and a tracer-permeable barrier (3), a sub-surface of which is in contact with the surrounding tissue and another sub-surface of which is in contact with a detection cavity (5) which is connected to a suitable apparatus for the measurement of tracer concentration in the detection cavity. The concentration of the tracer in the detection cavity is a measure of perfusion in the surrounding tissue. According to another embodiment of the invention it is also possible to carry out measurements of perfusion in the surface layers of the skin or of an organ.

L'invention concerne une méthode et un capteur destiné à mesurer une perfusion tissulaire. Le capteur est doté d'un réservoir (4) pour marqueur fluide ou gazeux et d'une barrière (3) perméable audit marqueur, une sous-surface de cette barrière étant en contact avec le tissu environnant, et une autre sous-surface étant en contact avec une cavité de détection (5) reliée à un appareil approprié pour mesurer la concentration du marqueur dans ladite cavité de détection. La concentration du marqueur dans la cavité de détection représente une mesure de perfusion dans le tissu environnant. Selon un autre mode de réalisation, il est possible de réaliser des mesures de perfusion dans les couches de surface de la peau ou d'un organe.

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