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:
Sep. 21, 1993
Filed:
May. 08, 1992
Applicant:
Inventors:
Erwin A Vogler, Newhill, NC (US);
Garry R Harper, Raleigh, NC (US);
Assignee:
Becton, Dickinson and Company, Franklin Lakes, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
422 73 ; 422101 ; 422102 ; 436 69 ; 436177 ; 435-2 ; 428405 ; 128760 ; 210504 ; 210506 ;
Abstract
An additive for a blood collection tube has a wettable surface region and a nonwettable surface region. When a blood sample comes into contact with the wettable surface region, the clotting cascade is initiated. Clot material adheres to the nonwettable surface region. The additive thereby becomes part of the clot and, on centrifugation, becomes part of the pellet and is removed from the serum layer. The invention includes a blood collection tube having the additive therein. The tube may be evacuated and have an open end covered with a septum.