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:
Jul. 13, 1993
Filed:
Aug. 03, 1992
Joseph A Bancsi, Vernon Hills, IL (US);
Charles Eller, Antioch, IL (US);
Thomas A Fowles, McHenry, IL (US);
Brian J Gorman, Lake Geneva, WI (US);
Terrance J Hebron, Antioch, IL (US);
Charles Jersild, Vernon Hills, IL (US);
Donald A Jess, Fox Lake, IL (US);
Joseph C Wong, Lake Villa, IL (US);
Ray W Wood, Elkhorn, WI (US);
Baxter International Inc., Deerfield, IL (US);
Abstract
The present invention provides an improved cannula that can be used to reconstitute powdered drugs in a drug delivery system. Furthermore, the present invention provides a cannula and drug delivery system incorporating same. To this end, the present invention provides a cannula structure for use in a reconstitution device for reconstituting a powdered drug comprising a cannula having a first end and a second end, and defining a channel in an interior thereof between the first and second ends. The first end is closed and includes a member for piercing a septum. The cannula includes at least two slots providing fluid communication between the channel and an exterior of the cannula. The slots are located in juxtaposition to the first end and have a width, as measured along a length of the cannula, that is less than a length, as measured around the cannula. The slots also have a minimum projected area equal to or greater than the cross-sectional area of the channel.