Patent ID: 6531098
Filing Date: 2003-03-11
Classification: B01L,G01N,Y10T

Abstract:
A disposable, capillary pipette device for admitting and emitting a fluid sample, said device formed from a single, continuous tube of material comprising:a) a single, continuous, tube of hydrophilic and elastomeric material, said tube having a flexible wall and a channel extending from a first end to a second end; b) said first end of said tube being open and forming a fluid flow port having a diameter D1 for admitting and emitting liquids to and from the tube; c) said second end of said tube being closed and forming a sealed end; d) a capillary section formed at the first end of said tube constructed and arranged to admit the liquid sample into said tube, said capillary section having a capillary tube wall extending a distance L1 from said fluid flow port to a preselected intermediate point on said tube, said tube having an inner diameter equal to D1 in said capillary section; e) a vent hole extending through said flexible wall in the capillary section of said tube, said vent hole having a diameter D3 smaller than D1, said vent hole being positioned in the tube at a preselected distance from said port to define a liquid sample chamber within said capillary section, said liquid sample chamber having a preselected calibrated volume; and, f) a bulbous section formed proximate the second end of said tube, said bulbous section extending a distance L2 from said preselected intermediate point to said sealed end, said tube having an inner diameter D2 greater than D1 in said bulbous section, said bulbous section constructed and arranged to emit the entire volume of liquid sample contained in said capillary section by manually squeezing said bulbous section.