US 12,213,699 B2
Threaded cannula depth limiter
Gregory G. Scott, Cincinnati, OH (US); Jonathan M. Cepress, Cincinnati, OH (US); David L. Collins, Cincinnati, OH (US); Matthew S. Corbin, Placentia, CA (US); and Jeffrey L Savage, West Chester, OH (US)
Assigned to Cilag GmbH International, Zug (CH)
Filed by Cilag GmbH International, Zug (CH)
Filed on Mar. 26, 2021, as Appl. No. 17/213,415.
Claims priority of provisional application 63/018,650, filed on May 1, 2020.
Prior Publication US 2021/0338274 A1, Nov. 4, 2021
Int. Cl. A61B 17/34 (2006.01)
CPC A61B 17/3423 (2013.01) [A61B 17/3494 (2013.01); A61B 2017/3458 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A surgical access device assembly comprising:
(a) a cannula including:
(i) a working channel configured to guide a surgical instrument along a central axis of the cannula,
(ii) at least one helical tissue engagement feature disposed along an outer surface of the cannula, wherein the helical tissue engagement feature is configured to stabilize the cannula relative to a body cavity wall of a patient when the cannula is inserted distally through the body cavity wall, and
(iii) at least one longitudinal track disposed along the outer surface of the cannula; and
(b) a depth limiter movably coupled with the cannula, wherein the depth limiter comprises:
(i) a first body portion,
(ii) a second body portion, wherein each of the first and second body portions extends about a central axis of the depth limiter, and
(iii) at least one protrusion extending radially inwardly relative to the central axis of the depth limiter,
wherein the first and second body portions are rotatable relative to one another and relative to the cannula about the central axis between a fine adjustment configuration and a coarse adjustment configuration, wherein in the fine adjustment configuration the at least one protrusion is configured to selectively threadably engage the at least one helical tissue engagement feature, wherein in the coarse adjustment configuration the at least one protrusion is configured to selectively threadably disengage the at least one helical tissue engagement feature and selectively slidably engage the at least one longitudinal track such that the depth limiter is translatable axially along the cannula.