The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 23, 1998
Filed:
Jun. 13, 1996
Kathleen A Eischen, St. Paul, MN (US);
James W Kenney, Broomall, PA (US);
Diametrics Medical, Inc., Roseville, MN (US);
Abstract
A disposable, vented capillary draw device is described that is also capable of use for the syringe pressurized dispensing of liquid benignly drawn. The system includes a vented capillary collection tube for drawing liquid samples by capillary rise in a bubble-free manner. A reversible, positive vent shut-off is provided to help contain the drawn material in the capillary. A reciprocating, loose fitting, syringe plunger arrangement is also provided attached to and operable in the capillary tube. Initial axial displacement of the plunger in the capillary toward the open end is used to initially operate the vent seal or positive vent shut-off device to close the vent and, upon further advancement of the plunger, the plunger forces the liquid material back out of the draw tube.