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. 01, 1976
Filed:
Jan. 15, 1975
Applicant:
Inventor:
Donald L Bailey, Thornton, CO (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61B / ;
U.S. Cl.
CPC ...
128 / ; 128D / ; 1282 / ; 128220 ;
Abstract
A syringe for taking blood samples includes a tubular body having a main plunger slidably received therein in fluid tight relationship. The tubular body has an opening through the leading end in communication with connection means for receiving a hypodermic needle or the like. The main plunger has a passage there-through in communication with the opening in the leading end of the tubular body and an auxiliary plunger is slidably received in said passage to assist in initially drawing blood into said passage to purge gaseous materials from the opening in the leading end of the tubular body before blood is allowed to flow into the internal chamber of the tubular body.