Patent ID: 6272930
Filing Date: 2001-08-14
Classification: A61M,G01L

Abstract:
A tube assembly comprising:a duct having an axial bore with a wall having an inside face, an orifice passing through said duct wall and communicating with said bore at said inside face, a first connecting end and a second connecting end, said axial bore of said duct having a substantially constant cross-sectional size and shape along its length;a first tube having an inside surface forming an axial bore substantially equal in cross-sectional size and shape to the axial bore of said duct, said first tube being connected to said first end of said duct, the inside face of said duct being substantially flush with the inside surface of said first tube;a second tube having an inside surface forming an axial bore, substantially equal in cross-sectional size and shape to the axial bore of said duct, said second tube being connected to said second end of said duct the inside face of said duct being substantially flush with the inside surface of said second tube; anda pressure sensor for measuring a pressure of a fluid within said duct, said sensor having a sensitive surface which is subjected to a pressure exerted by a fluid within said duct, said sensitive surface communicating with said orifice, a volume defined by the sensitive surface and an inside surface of said orifice being less than about 10 mm.sup.3.