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. 06, 1996
Filed:
Jan. 25, 1994
Jean P Grimard, Vif, FR;
Becton, Dickinson and Company, Franklin Lakes, NJ (US);
Abstract
A syringe assembly includes a substantially cylindrical syringe barrel and a plunger assembly. The plunger assembly includes a distally disposed flow channelizer and a proximally disposed stopper releasably engaged with one another. The stopper includes an aperture engageable with the distal end of a plunger rod. The flow channelizer includes flutes for accommodating an outflow of vapor during lyophilization and to enable efficient mixing of a lyophilized medication and a diluent. Liquid medication in the syringe chamber is lyophilized and a vacuum is applied to the syringe barrel. The plunger assembly then is urged distally into sealing engagement with the syringe barrel. A plunger rod is engaged with the stopper, and is moved proximally to simultaneously separate the stopper from the flow channelizer and to draw diluent into the chamber for reconstituting the previously lyophilized medication.