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:
Sep. 01, 1987
Filed:
Jun. 03, 1985
Timothy Woodford, North Palm Beach, FL (US);
John Cheraso, North Palm Beach, FL (US);
Other;
Abstract
A vented blood gas syringe is capable of allowing arterial blood to enter into a specimen chamber due to blood pressure or due to the aspirating the blood into the chamber where insufficient blood pressure of the patient exists. The blood gas syringe is fabricated of conventional parts modified for venting. The plunger of a conventional syringe has air passages through the lower rib thereof to allow air to pass into the air space formed by the body of the plunger. The passages are further sized to restrict the flow of blood therethrough. A slice is made in the upper rib and at least one air passage is provided from the air space between the ribs to the slice. The upper portion of the upper rib above the slice becomes a flap which can act as a valve resting on a seat formed by the slice to allow air to pass upward but not downward.