Actuation mechanisms for tissue specimen retrieval devices and tissue specimen retrieval devices incorporating the same

Abstract

A tissue specimen retrieval device includes an outer shaft including a proximal portion and a distal portion. The distal portion of the outer shaft includes a first jaw defining a first side of a lumen in the distal portion of the outer shaft. A second jaw defines a second side of the lumen in the distal portion of the outer shaft. The first and second jaws are actuatable between a closed configuration and an expanded configuration in which the first and second jaws are spaced relative to each other. A tissue specimen bag is supported by the first jaw and the second jaw. A bag brim of the tissue specimen bag defines a collapsed configuration when positioned in the lumen defined by the first jaw and the second jaw and an open configuration when the first and second jaws are in the expanded configuration.

1 - 20 . (canceled) 
     
     
         21 . A tissue specimen retrieval device comprising:
 a housing;   an outer shaft extending distally from the housing and having a distal portion, the distal portion supporting an end effector comprising:
 a first jaw coupled pivotably to the distal portion of the outer shaft; and 
 a second jaw coupled pivotably to the distal portion of the outer shaft, 
 the first and second jaws being actuatable between a closed configuration and an expanded configuration in which the first and second jaws are spaced relative to each other; and 
   a tissue specimen bag supported by the first jaw and the second jaw, the tissue specimen bag having a bag brim, the bag brim coupled to the first jaw and the second jaw, wherein the bag brim defines a collapsed configuration when the first jaw and the second jaw are in the closed configuration and an open configuration when the first and second jaws are in the expanded configuration.   
     
     
         22 . The tissue specimen retrieval device of  claim 21 , wherein the first jaw defines a first pivot point and a second pivot point and the second jaw defines a third pivot point and a fourth pivot point, and wherein actuation of the first jaw and the second jaw from the closed configuration to the expanded configuration pivots the first jaw about the first and second pivot points and pivots the second jaw about the third and fourth pivot points to expand the bag brim from the closed configuration to the open configuration. 
     
     
         23 . The tissue specimen retrieval device of  claim 22 , wherein the tissue specimen bag further comprises a bag body, the bag body being configured in a furled configuration when the first and second jaws are in the closed configuration, and being configured in an unfurled configuration when the first and second jaws are in the expanded configuration. 
     
     
         24 . The tissue specimen retrieval device of  claim 21 , further comprising a first suture coupling removably the bag brim to the first and second jaws. 
     
     
         25 . The tissue specimen retrieval device of  claim 24 , wherein the bag brim comprises a channel defined therein and wherein a second suture extends within the channel formed in the bag brim, the second suture configured to cinch the bag brim into a closed configuration. 
     
     
         26 . The tissue specimen retrieval device of  claim 25 , further comprising an actuator positioned on the housing, the actuator operably coupled to the second suture and configured to retract the second suture. 
     
     
         27 . The tissue specimen retrieval device of  claim 25 , wherein the first and second jaws each comprises a plurality of orifices configured to receive the first suture therein to removably couple the bag brim to the first and second jaws. 
     
     
         28 . The tissue specimen retrieval device of  claim 21 , further comprising:
 a first track formed in a proximal portion of the first jaw;   a second track formed in a proximal portion of the second jaw, the first track overlapping the second track; and   a pin positioned in the first track and the second track, wherein advancing the pin along a proximal-to-distal direction actuates the first and second jaws between the closed configuration and the expanded configuration.   
     
     
         29 . The tissue specimen retrieval device of  claim 28 , further comprising a driver coupled to the pin and configured to advance the pin along the proximal-to-distal direction. 
     
     
         30 . The tissue specimen retrieval device of  claim 29 , further comprising an actuator positioned on the housing, the actuator operably coupled to the driver and configured to advance the driver along the proximal-to-distal direction. 
     
     
         31 . The tissue specimen retrieval device of  claim 21 , wherein the housing comprises a pistol-grip handle. 
     
     
         32 . A tissue specimen retrieval device, comprising:
 an outer shaft having a proximal portion and a distal portion, the outer shaft supporting an end effector at the distal portion, the end effector comprising:
 a first jaw coupled pivotably to the distal portion of the outer shaft; 
 a second jaw coupled pivotably to the distal portion of the outer shaft, 
 the first and second jaws being actuatable between a closed configuration and an expanded configuration in which the first and second jaws are spaced relative to each other; and 
 a tissue specimen bag supported by the first jaw and the second jaw, the tissue specimen bag having a bag brim, the bag brim coupled to the first jaw and the second jaw, wherein the bag brim defines a collapsed configuration when the first jaw and the second jaw are in the closed configuration and an open configuration when the first and second jaws are in the expanded configuration. 
   
     
     
         33 . The tissue specimen retrieval device of  claim 32 , wherein the first jaw defines a first pivot point and a second pivot point and the second jaw defines a third pivot point and a fourth pivot point, and wherein actuation of the first jaw and the second jaw from the closed configuration to the expanded configuration pivots the first jaw about the first and second pivot points and pivots the second jaw about the third and fourth pivot points to expand the bag brim from the closed configuration to the open configuration. 
     
     
         34 . The tissue specimen retrieval device of  claim 33 , wherein the tissue specimen bag further comprises a bag body, the bag body being configured in a furled configuration when the first and second jaws are in the closed configuration, and being configured in an unfurled configuration when the first and second jaws are in the expanded configuration. 
     
     
         35 . The tissue specimen retrieval device of  claim 32 , further comprising a first suture coupling removably the bag brim to the first and second jaws. 
     
     
         36 . The tissue specimen retrieval device of  claim 35 , wherein the bag brim comprises a channel defined therein and wherein a second suture extends within the channel formed in the bag brim, the second suture configured to cinch the bag brim into a closed configuration. 
     
     
         37 . The tissue specimen retrieval device of  claim 36 , wherein the second suture extends through a lumen in the proximal portion of the outer shaft, and wherein the second suture is connected with an actuator. 
     
     
         38 . The tissue specimen retrieval device of  claim 36 , wherein the first and second jaws each comprises a plurality of orifices configured to receive the first suture therein to couple removably the bag brim to the first and second jaws. 
     
     
         39 . The tissue specimen retrieval device of  claim 33 , further comprising:
 a first track formed in a proximal portion of the first jaw;   a second track formed in a proximal portion of the second jaw, the first track overlapping the second track; and   a pin positioned in the first track and the second track, wherein advancing the pin along a proximal to distal direction actuates the first and second jaws between the closed configuration and the expanded configuration.   
     
     
         40 . The tissue specimen retrieval device of  claim 39 , further comprising a driver coupled to the pin and configured to advance the pin along the proximal to distal direction.