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:
Feb. 23, 1993
Filed:
Dec. 01, 1988
Howard M Hochberg, Woodinville, WA (US);
Abbott Laboratories, Abbott Park, IL (US);
Abstract
The apparatus includes a container (26) having an open upper end into which is fitted a stopper (20). From the lower peripheral surface of the stopper (20) depends a membrane (24) which forms a chamber containing one calibrating fluid (28). The stopper (20) is adapted to permit a medical probe to extend therethrough, the hub (16) needle (14) and sensor (12) of which extend beneath the membrane (24). Another calibrating fluid (30) is located in the container (26) beneath the membrane (24). The membrane (24) is capable of maintaining a fluid-tight seal as it is punctured by the needle (14) and of re-sealing itself when the needle (14) is removed, without permitting contamination of the one calibrating fluid (28) by the other calibrating fluid (30) and vice versa.