US 11,701,470 B2
Injection system comprising a syringe and a protective assembly
Frédéric Perot, Saint Paul de Varees (FR); Salim Bouyahiaoui, Annecy (FR); and Gilles Bernède, Arbusigny (FR)
Assigned to Becton Dickinson France, Le Pont de Claix (FR)
Appl. No. 16/970,821
Filed by Becton Dickinson France, Le Pont de Claix (FR)
PCT Filed Feb. 12, 2019, PCT No. PCT/EP2019/053467
§ 371(c)(1), (2) Date Aug. 18, 2020,
PCT Pub. No. WO2019/158538, PCT Pub. Date Aug. 22, 2019.
Claims priority of application No. 18157458 (EP), filed on Feb. 19, 2018.
Prior Publication US 2021/0093787 A1, Apr. 1, 2021
Int. Cl. A61M 5/31 (2006.01); A61M 5/315 (2006.01); A61M 5/32 (2006.01)
CPC A61M 5/3129 (2013.01) [A61M 5/31511 (2013.01); A61M 5/3204 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A protective assembly for a syringe comprising a barrel, a plunger rod and a needle, the protective assembly comprising:
an axis;
a body for receiving the syringe and extending along the axis; and
a coupling device arranged inside the body, configured to be rigidly connected to the barrel as regards to axial movement relative to the body, the coupling device comprising an attaching element configured to be either in an engaged state with the plunger rod in order to axially fix the coupling device and the plunger rod, or in a release state in which the coupling device and the plunger rod are axially free relative to one another,
wherein the coupling device is axially movable in the body from a storage position, distally along a first travel distance along which the attaching element is in the engaged state, to an injection position in which the needle extends beyond the body, and in which the attaching element is free to move towards the release state, and wherein the coupling device is axially movable in the body from the injection position, proximally towards a safety position, in which the needle is covered by the body, along a second travel distance along which the attaching element is in the engaged state.