Patent ID: 11939099
Assignee: BECTON DICKINSON FRANCE S.A.S.
Field: Handling (Mechanical engineering)
Classification: CPC B  A | IPC A  B

Claim 6:
7. The device according to claim 5, wherein the stopper holder system comprises:
a first set of blocking elements arranged on a first circular wall and a second set of blocking elements arranged on a second circular wall,
wherein each blocking element of the first set of blocking elements is connected to an adjacent blocking element by the first circular wall, and each blocking element of the second set of blocking elements is connected to an adjacent blocking element by the second circular wall,
the blocking elements of the first set form angular parts that extend radially from the first circular wall,
the blocking elements of the second set form bearing surfaces that extend radially from the second circular wall, each bearing part including at least one perforation, and
when the stopper is in the fixed position, the stopper is in contact with apexes of the angular parts and blocked in the proximal direction by the bearing parts, and the perforations of the bearing parts provide fluid communication between the variable pressure chamber and the container.