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:
Aug. 18, 1992
Filed:
Mar. 18, 1991
Charles D Baker, Sandy, UT (US);
Owen D Brimhall, South Jordan, UT (US);
Thomas J McLaughlin, Salt Lake City, UT (US);
Separation Technology, Inc., Altamonte Springs, FL (US);
Abstract
An automatic hematocrit reader wherein a sample of blood in a microhematocrit capillary tube is banded with a standing wave from an ultrasonic transducer. A light source and photocell combination is used to determine the relative thicknesses of the bands of red blood cells and the bands of plasma. The hematocrit of the sample of blood is electronically calculated from this data. A calibration strip is included so that the device is calibrated each time the hematocrit is determined. The device includes a mechanical interlock/eject system for the microhematocrit capillary tube and is specifically configured so that the operator does not handle or even touch the microhematocrit capillary tube.