US 12,402,912 B2
Multi-diameter cannula depth limiter
Joseph T. Mozloom, Jr., Cincinnati, OH (US); Jeffery Bruns, Cincinnati, OH (US); Ryan McGhee, Cincinnati, OH (US); Cameron D. McLain, Deer Park, OH (US); Lauren M. Valente, Macomb, MA (US); and Matthew S. Corbin, Placentia, CA (US)
Assigned to Cilag GmbH International, Zug (CH)
Filed by Cilag GmbH International, Zug (CH)
Filed on Mar. 26, 2021, as Appl. No. 17/213,304.
Claims priority of provisional application 63/018,601, filed on May 1, 2020.
Prior Publication US 2021/0338281 A1, Nov. 4, 2021
Int. Cl. A61B 17/34 (2006.01); A61B 90/00 (2016.01)
CPC A61B 17/3494 (2013.01) [A61B 17/3423 (2013.01); A61B 90/03 (2016.02); A61B 2090/036 (2016.02)] 17 Claims
OG exemplary drawing
 
1. A depth limiter configured to couple with a first trocar cannula and a second trocar cannula, wherein the first and second trocar cannulas have different diameters, the depth limiter comprising:
(a) a first body portion comprising:
(i) a first gripping surface, and
(ii) a second gripping surface; and
(b) a second body portion, wherein the first and second body portions are pivotably coupled together by a living hinge and are movable between an open configuration and a closed configuration, wherein in the open configuration the first and second body portions are configured to allow for axial movement of the depth limiter relative to the first and second trocar cannulas, wherein in the closed configuration the first and second body portions are configured to restrict axial movement of the depth limiter relative to the first and second trocar cannulas, wherein the second body portion comprises:
(i) a first gripping surface that together with the first gripping surface of the first body portion collectively form a first opening having a first effective diameter that is sized to receive and configured to restrict axial movement of the depth limiter relative to the first trocar cannula in the closed configuration, and
(ii) a second gripping surface that together with the second gripping surface of the first body portion collectively form a second opening having a second effective diameter that is sized to receive and configured to restrict axial movement of the depth limiter relative to the second trocar cannula in the closed configuration, wherein the second effective diameter is greater than the first effective diameter, wherein the second opening opens up to an exterior of the depth limiter disposed opposite the living hinge to expose an outer surface of the second trocar cannula in the open and closed configurations,
wherein the living hinge defines a free terminal end of the depth limiter and is configured to bias the first and second body portions toward the closed configuration, wherein the living hinge comprises a notch in an exterior surface of the depth limiter.