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:
Oct. 13, 2020
Filed:
Mar. 02, 2018
Min Wei, Carmel, IN (US);
Min Wei, Carmel, IN (US);
Other;
Abstract
A pre-filled syringe for sterile medication fluid injection includes a syringe barrel with rotationally symmetric cylindrical bore, having a distal end and a proximal end; a syringe piston with rotationally symmetric external shape; a backstop mounted at the proximal end of the syringe barrel with an opening that is rotationally asymmetric about the axis through the syringe barrel; a push rod to move the syringe piston inside the syringe barrel, wherein at least one portion of the push rod is rotationally asymmetric about the axis through the syringe barrel, and upon rotation, the rotationally asymmetric portion of the push rod is aligned with the rotationally asymmetric opening of the backstop; and a seal component to cover the distal end of the syringe barrel.