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. 27, 1993
Filed:
Jan. 23, 1992
Applicant:
Inventors:
Dennis J Hlavinka, Golden, CO (US);
Byron W Larson, Lakewood, CO (US);
Assignee:
COBE Laboratories, Inc., Lakewood, CO (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
73 7903 ; 73 6453 ;
Abstract
A method and apparatus for assisting in the detection of bubbles in a fluid stream such as an intravascular line. Tubing having ribbing or other texturing spaced along the longitudinal axis to enhance signal transmission characteristics and to increase the number of signals intercepted by a passing bubble, is placed between an ultrasonic or other transmitter and detector. In other embodiments, bubbles are concentrated into a detection zone by a centrifugator or are concentrated and recirculated in a detection zone by an eddy-producing protrusion in the fluid stream.