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:
Nov. 17, 2009
Filed:
May. 08, 2007
Jai Seung Choi, Seoul, KR;
Kelvin Yu Chung Liang, Bellevue, WA (US);
Shente Steven Hsu, St. Louis, MO (US);
Eric Chi Kuo Lee, Bethlehem, PA (US);
Jai Seung Choi, Seoul, KR;
Kelvin Yu Chung Liang, Bellevue, WA (US);
Shente Steven Hsu, St. Louis, MO (US);
Eric Chi Kuo Lee, Bethlehem, PA (US);
Device Evolutions LLC, Princeton, NJ (US);
Abstract
A venous-arterial detector is disclosed. The detector includes a first chamber in fluid communication with a needle, and an indicator chamber in selective fluid communication with the first chamber through a valve. The indicator chamber is pre-pressurized to a defined pressure that preferably exceeds typical venous pressure, and the valve retains that pressure within the indicator chamber. When the needle is inserted into a vessel, if the pressure in the vessel is greater than the defined pressure in the indicator chamber, blood will flow into the indicator chamber, indicating that the vessel is most likely to be an artery.