US 12,290,281 B2
Valved cannula assembly
James Y. Chon, Irvine, CA (US); Joel Cicchella, Tustin, CA (US); Robert Jeffrey Heng, Costa Mesa, CA (US); Grace Chuang Liao, Irvine, CA (US); and Ashish Sinha, Irvine, CA (US)
Assigned to Alcon Inc., Fribourg (CH)
Filed by Alcon Inc., Fribourg (CH)
Filed on Jul. 7, 2022, as Appl. No. 17/811,144.
Claims priority of provisional application 63/223,672, filed on Jul. 20, 2021.
Prior Publication US 2023/0021425 A1, Jan. 26, 2023
Int. Cl. A61B 17/34 (2006.01); A61F 9/007 (2006.01)
CPC A61B 17/3423 (2013.01) [A61B 17/3462 (2013.01); A61F 9/00727 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A valved cannula assembly, comprising:
a cannula, comprising:
a head at a proximal end of the cannula; and
a hollow rod extending from the head to a distal end of the cannula; and
a valved hub coupled to the head and comprising a septum having two or more curved flaps configured to provide an opening for an instrument;
wherein a top face of the head contacts a downward facing annular seal disposed in the valved hub to form a seal between the cannula and the valved hub;
wherein the septum has a concave shape in relation to a top face of the valved hub;
wherein the septum is recessed from the top face of the valved hub by a distance of about 0.005 inches or greater;
wherein a wall of the hollow rod has a first thickness at the distal end of the cannula less than a second thickness of remaining portions of the hollow rod;
wherein the top face of the valved hub comprises a raised ring extending upward from the top face, and wherein the septum is recessed by a first distance from an upper edge of the raised ring greater than a second distance from the top face of the valved hub.