Specimen retrieval devices with selective bag release

Abstract

A specimen retrieval device includes an elongated shaft assembly having a proximal end portion and a distal end portion. An end effector is supported on the distal end portion of the elongated shaft assembly and includes a first arm and a second arm. The first arm includes a first distal finger and the second arm includes a second distal finger. The first and second fingers are configured to selectively engage one another to support a collection bag on the first and second arms.

1 - 20 . (canceled) 
     
     
         21 . A specimen retrieval device, comprising:
 a shaft having a proximal end portion and a distal end portion; and   an end effector supported on the distal end portion of the shaft and including a first arm and a second arm configured to cooperate to support a collection bag thereon, the first arm including a first distal finger and the second arm including a second distal finger, the first and second fingers releasably slidably engaged with one another.   
     
     
         22 . The specimen retrieval device of  claim 21 , wherein, with the first and second distal fingers slidably engaged with one another, the first and second arms define a closed ring. 
     
     
         23 . The specimen retrieval device of  claim 22 , wherein, with the first and second distal fingers slidably engaged with one another, the first and second distal fingers are configured to slide relative to one another to increase or decrease a diameter of the closed ring. 
     
     
         24 . The specimen retrieval device of  claim 23 , wherein, with the first and second distal fingers released from one another, the first and second distal fingers define free, spaced-apart ends. 
     
     
         25 . The specimen retrieval device of  claim 21 , wherein the first distal finger or the second distal finger includes a first or a second detent, respectively, that is selectively engagable with the second distal finger or the first distal finger, respectively. 
     
     
         26 . The specimen retrieval device of  claim 25 , wherein the first detent or the second detent has a U-shaped configuration. 
     
     
         27 . The specimen retrieval device of  claim 25 , wherein the first detent or the second detent includes at least one wing. 
     
     
         28 . The specimen retrieval device of  claim 21 , further comprising a stationary handle and a movable handle supported on the proximal end portion of the shaft, the movable handle movable relative to the stationary handle to move the end effector between a closed position within the shaft and an open position extending distally from the shaft. 
     
     
         29 . A specimen retrieval system, comprising:
 a collection bag; and   an end effector supported on the distal end portion of the shaft and including a first arm and a second arm cooperating to support the collection bag thereon, the first arm including a first distal finger and the second arm including a second distal finger, the first and second fingers releasably slidably engaged with one another.   
     
     
         30 . The specimen retrieval system of  claim 29 , wherein, with the first and second distal fingers slidably engaged with one another, the first and second arms define a closed ring configured to support the collection bag thereon. 
     
     
         31 . The specimen retrieval system of  claim 30 , wherein, with the first and second distal fingers slidably engaged with one another, the first and second distal fingers are configured to slide relative to one another to increase or decrease a diameter of the closed ring thereby increasing or decreasing a diameter of an open end of the collection bag. 
     
     
         32 . The specimen retrieval system of  claim 31 , wherein, with the first and second distal fingers released from one another, the first and second distal fingers define free, spaced-apart ends configured for slidable receipt or removal of the collection bag. 
     
     
         33 . The specimen retrieval system of  claim 29 , wherein the first distal finger or the second distal finger includes a first or a second detent, respectively, that is selectively engagable with the second distal finger or the first distal finger, respectively. 
     
     
         34 . The specimen retrieval system of  claim 33 , wherein the first detent or the second detent has a U-shaped configuration. 
     
     
         35 . The specimen retrieval system of  claim 33 , wherein the first detent or the second detent includes at least one wing. 
     
     
         36 . A specimen retrieval device, comprising:
 an outer shaft;   an inner shaft disposed within the outer shaft;   a first arm having a proximal end portion secured to the inner shaft and distal end portion having a first distal finger; and   a second arm having a proximal end portion secured to the inner shaft and distal end portion having a second distal finger,   wherein the inner shaft is movable relative to the outer shaft to deploy the first and second arms from the outer shaft, and wherein the first and second distal fingers are releasably slidably engaged with one another and configured to slide in opposite directions as the first and second arms are deployed from the outer shaft.   
     
     
         37 . The specimen retrieval device of  claim 36 , wherein, with the first and second distal fingers slidably engaged with one another and deployed from the outer shaft, the first and second arms define a closed ring. 
     
     
         38 . The specimen retrieval device of  claim 37 , wherein the first and second distal fingers are configured to slide in opposite directions to increase or decrease a diameter of the closed ring. 
     
     
         39 . The specimen retrieval device of  claim 38 , wherein, with the first and second distal fingers released from one another and deployed from the outer shaft, the first and second distal fingers define free, spaced-apart ends. 
     
     
         40 . The specimen retrieval device of  claim 36 , wherein the first and second distal fingers support first and second winged detents, respectively, configured to cam along the second and first distal fingers, respectively.