US 12,446,919 B2
Cannula assembly
James Y. Chon, Irvine, CA (US); Jesus R. Gonzales, Jr., Wernersville, PA (US); Grace Chuang Liao, Irvine, CA (US); Hanspeter Naef, Enola, PA (US); Ashish Sinha, Irvine, CA (US); and Mark Vojtasek, Reading, PA (US)
Assigned to Alcon Inc., Fribourg (CH)
Filed by Alcon Inc., Fribourg (CH)
Filed on Aug. 25, 2023, as Appl. No. 18/455,809.
Claims priority of provisional application 63/375,417, filed on Sep. 13, 2022.
Prior Publication US 2024/0081862 A1, Mar. 14, 2024
Int. Cl. A61B 17/34 (2006.01); A61B 90/92 (2016.01); A61F 9/007 (2006.01); A61B 17/00 (2006.01)
CPC A61B 17/3423 (2013.01) [A61B 17/3462 (2013.01); A61B 90/92 (2016.02); A61F 9/00736 (2013.01); A61B 2017/00477 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A cannula assembly, comprising:
a cannula having a proximal end and a distal end, the cannula comprising:
a head at the proximal end, the head having one or more wings, and
a hollow rod extending from the head to the distal end; and
a hub couplable to the head and having a housing with an inner wall comprising a windowless, cylindrical sidewall of the hub, wherein:
the inner wall comprises an undercut formed as an annular internal groove in the cylindrical sidewall extending substantially 360 degrees around the cylindrical sidewall, and
one or more distal ends of the corresponding one or more wings are configured to fit into the undercut for coupling the hub to the head upon insertion of the head into the hub;
wherein the one or more distal ends of the corresponding one or more wings are configured to fit into the undercut upon the head being inserted into the hub without the one or more wings having to be clocked relative to the undercut due to the substantially 360 degrees of the undercut; and
wherein once the one or more wings are received by the undercut, any force exerted to separate the head from the hub would result in an opposite force being exerted on the one or more wings by the undercut to inhibit decoupling of the cannula from the hub.