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:
Mar. 21, 2023
Filed:
May. 31, 2022
West Pharmaceutical Services, Inc., Exton, PA (US);
Jeffrey M. Laubach, Emmaus, PA (US);
Jurgen Brinkhues, Aachen, DE;
Heike Gruen, Aachen, DE;
Joel Worman, Palm Harbor, FL (US);
Xia Zhao, Malvern, PA (US);
Jason Mattia, Downingtown, PA (US);
West Pharmaceutical Services, Inc., Exton, PA (US);
Abstract
A piston to be provided within an inner wall of a barrel of a pharmaceutical syringe for dispensing medicament retained in the barrel is described. The piston includes a body defining a central face, a cylindrical portion, and an annular curved portion between the cylindrical portion and the central face portion. The piston also includes an inert film enclosing the central face portion and at least a part of the annular curved portion. The cylindrical portion and the part of the annular curved portion are together configured to maintain a fluid-tight seal with the inner wall of the barrel. A pharmaceutical syringe is described for dispensing a medicament includes a barrel configured to retain the medicament and the piston.