G - Physics – 01 – F
Patent
G - Physics
01
F
G01F 1/48 (2006.01) A61M 1/00 (2006.01) G01F 1/34 (2006.01) G01F 1/40 (2006.01) G01L 19/00 (2006.01)
Patent
CA 2330068
The invention concerns a device for measuring the flow rate of a liquid circulating in a pipe and extracted from or introduced in the human body. The device comprises two pressure measuring means (12, 14) and a conduit element (16) whereof the ends are respectively connected to the measuring means, the conduit element being substantially rigid and having an internal diameter equal to that of the pipe portions (22, 26) to produce a laminar flow of said liquid. Each pressure measuring means comprises means forming a pipe with an axial bore whereof the wall inner surface (41) substantially provides continuity to the pipe and an orifice (42) passing through the wall and emerging in the inner surface and a pressure sensor (46) for measuring said liquid pressure in the pipe, said sensor having a surface subjected to said liquid pressure, the sensor being mounted sealed in the orifice, such that said sensitive surface substantially provides continuity to the inner wall surface of the means forming a pipe.
L'invention concerne un dispositif de mesure du débit d'un liquide circulant dans une tubulure et extrait ou introduit dans le corps humain. Le dispositif comprend deux moyens de mesure de pression (12, 14) et un élément de conduite (16) dont les extrémités sont respectivement raccordées aux moyens de mesure, l'élément de conduite étant sensiblement rigide et présentant un diamètre interne D sensiblement égal à celui des portions de tubulure (22, 26) pour produire un écoulement laminaire dudit liquide. Chaque moyen de mesure de pression comprend des moyens formant tubulure présentant un alésage axial dont la face interne (41) de la paroi constitue sensiblement une solution de continuité de la tubulure et un orifice (42) traversant la paroi et débouchant dans la face interne et un capteur de pression (46) pour mesurer la pression dudit liquide dans la tubulure, ledit capteur présentant une surface soumise à la pression dudit liquide, le capteur étant monté de manière étanche dans l'orifice, de telle manière que ladite surface sensible constitue sensiblement une solution de continuité de la face interne de la paroi des moyens formant tubulure.
Bos Gilles
Ducournau Didier
Vitally Guy
Corneal Industrie
Sim & Mcburney
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