US 12,324,905 B2
Needle cover with undercut
Longxiang Huang, Jiangsu (CN); Bo Yan, Shanghai (CN); and Jeremy Zucchelli, Saint martin d'hères (FR)
Assigned to Becton Dickinson France, Le Pont-de-Claix (FR)
Appl. No. 17/440,365
Filed by Becton Dickinson France, Le Pont-de-Claix (FR)
PCT Filed Apr. 24, 2020, PCT No. PCT/EP2020/061485
§ 371(c)(1), (2) Date Sep. 17, 2021,
PCT Pub. No. WO2020/216918, PCT Pub. Date Oct. 29, 2020.
Claims priority of application No. 19305540 (EP), filed on Apr. 26, 2019.
Prior Publication US 2022/0184322 A1, Jun. 16, 2022
Int. Cl. A61M 5/32 (2006.01)
CPC A61M 5/3204 (2013.01) [A61M 5/3202 (2013.01); A61M 5/3213 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A needle cover for protecting a needle mounted on a tip of a barrel of a medical injection device, wherein the tip extends from a distal end of the barrel, the needle cover comprising:
an inner shield extending along a longitudinal axis configured to sealingly contact the tip of the barrel, and
an outer shield surrounding at least partially the inner shield, and fixed to said inner shield, the outer shield comprising:
a body including a first open end, a second end, and a sidewall extending between the first open end and the second end, the body defining a cavity to receive the inner shield therein;
a first undercut defined in the sidewall adjacent the first open end of the body; and
a second undercut defined in the sidewall adjacent the first open end of the body,
wherein a distance from the first open end to a proximal edge of the first undercut is greater than a distance from the first open end to a proximal edge of the second undercut,
the inner shield comprises a proximal connection part received in the first undercut and the second undercut,
wherein during a removal of the needle cover from the medical injection device, as the outer shield is moved in the distal direction under a pulling force, the proximal end of the first undercut is configured to first contact the proximal connection part and an opposing side of the proximal connection part is configured to be flexed towards the proximal end of the second undercut, and
wherein engagement between the proximal connection part and the proximal end of the second undercut is configured to assist in disengagement of the inner shield from the tip.