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. 28, 2026
Filed:
Feb. 25, 2020
Becton Dickinson France, Le Pont de Claix, FR;
Cédric Rivier, Voreppe, FR;
Guillaume Lehee, La Buisse, FR;
Nastasja Grillet, Cusy, FR;
Ferdinand Lavigne, Seyssinet-Pariset, FR;
Jérémie Vaxelaire, Grenoble, FR;
Becton Dickinson France, Le Pont de Claix, FR;
Abstract
The invention relates to a valve stopper configured to be positioned inside a barrel of an injection device for injecting a composition through a distal, including: a membrane having a proximal and distal face, the membrane being configured to separate a, distal chamber of the barrel from a proximal chamber; a lateral wall extending from the membrane to define a distal cavity, the lateral wall having a circumferential sealing surface configured to sealingly engage the inner surface of the barrel; where the proximal face presents a concave shape and the membrane includes a notch extending through the membrane between the proximal and distal face, being configured to selectively create a fluid path through the membrane from the proximal face to the distal face depending on the pressure exerted by a composition onto the proximal face of the membrane for transferring fluid only from the second chamber to the first.