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:
Dec. 12, 2000
Filed:
Apr. 15, 1998
Jon Neese, Salt Lake City, UT (US);
Ben D Shirley, Salt Lake City, UT (US);
Utah Medical Products, Midvale, UT (US);
Abstract
An apparatus for sampling blood through an intravenous or intraarterial tube which does not interfere with normal operation of an infusion operation or a direct pressure monitoring operation. A needleless sampling site at which fluid can be removed is connected to the tube. A chamber is provided which is connected to the tube such that fluid can be interchanged between the tube and the chamber. A plunger is provided for drawing the fluid from the tube into the chamber and for expelling the fluid from the chamber into the tube. In its normal position, the plunger blocks the interconnection between the tube and the chamber. When in its sampling position, the plunger creates a vacuum in the chamber causing the fluid in the tube to be aspirated into the chamber. The aspirating action causes fluid in the patient to be drawn up to the sampling site. An actuator, which can be operated by a single hand of a medical practitioner, imparts an appropriate feel to the system operation. A practitioner can carefully control the aspiration and expulsion operations of the system due to the resistance provided against the practitioner's hand movements and configuration of the body and the actuator means. The movement of the plunger is such that fluid is selectively drawn into and expelled from the chamber.