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:
Apr. 19, 1994
Filed:
Mar. 18, 1993
Applicant:
Inventor:
Katsutoshi Kurose, Yamanashi, JP;
Assignee:
Terumo Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61B / ;
U.S. Cl.
CPC ...
128763 ; 128771 ;
Abstract
A blood collecting needle of the present invention comprises a hollow cannula, both ends of which are sharp tips, and a hub for supporting the center portion thereof. The hub comprises a sheath which surrounds the cannula in a liquid sealed state projecting from the back section of the hub, formed of an elastic body fixedly mounted on the hub, and an air passage connecting the space between the sheath and the cannula with outside air. As a result, flashback can be reliably confirmed, for example, when the tip of the cannula pierces an intravenous vein.