Device and method for locating an anatomical cavity in a body

Details Device and method for locating an anatomical cavity in a body Device and method for locating an anatomical cavity in a body

A - Human Necessities

61

B

A61B 17/34 (2006.01) A61B 5/03 (2006.01) A61M 5/48 (2006.01)

Patent

CA 2450569

The invention describes a device (1) for locating an anatomical cavity (15) inside a body (10). The device comprises a fluid-filled reservoir (30) which is closed off in a sealed manner by a displaceable plunger (32) and is connected to a hollow puncture needle (20). To measure the pressure prevailing in the fluid, the device comprises a pressure gauge (40). A signal converter (50) is used to convert a continuous pressure-measurement signal provided by the pressure gauge (40) into a form which is suitable for further processing. A synthesizer (60) is designed to process the converted pressure-measurement signal into a continuous sound signal which is representative of the pressure. If, during a displacement of the puncture needle (20), a needle point (21) reaches the anatomical cavity (15), the result is a readily perceptible change in the sound signal. The device comprises recording means for recording the pressure-measurement signal over the course of time.

L'invention concerne un dispositif (1) pour localiser une cavité anatomique (15) dans le corps (10). Le dispositif comprend un réservoir rempli de liquide (30) qui est fermé étanche par un piston mobile (32), relié à une aiguille de percement mobile (20). Pour mesurer la pression existant dans le liquide, le dispositif est muni d'un manomètre (40). Un convertisseur de signaux (50) est utilisé pour transformer un signal continu de mesure de pression, fourni par le manomètre (40), dans une forme qui convient à un traitement ultérieur. Un synthétiseur (60) est conçu pour traiter le signal de mesure de pression transformé et obtenir un signal sonore continu représentatif de la pression. Si, pendant le déplacement de l'aiguille de percement (20), un point de l'aiguille (21) atteint la cavité anatomique (15), le résultat constitue un changement audible du signal sonore. Le dispositif comprend un système d'enregistrement pour enregistrer le signal de mesure de pression pendant un temps déterminé.

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