Single incision laparoscopic tissue retrieval system
View Patent ↗A tissue retrieval system can include a tissue retrieval bag with an elongate profile. The tissue retrieval bag can have a relatively large volume, but be rollable to a stowed configuration to fit in a relatively small diameter introducer. The tissue retrieval system can include one or more support arms coupled to the tissue retrieval bag, the support arms biased to position the tissue retrieval bag in an access position once deployed from the introducer. A tissue retrieval system can have a hybrid tissue retrieval bag including material properties that vary along the depth of the bag from an open end to a closed end. A tissue retrieval bag can be used in conjunction with an introducer, or as a stand alone tissue retrieval bag.
1. A tissue retrieval system comprising:
an elongate introducer having a hollow lumen formed therein, the elongate introducer defining a longitudinal axis;
a tissue retrieval bag having a proximal end, a distal end, and a rim defining an opening, wherein the tissue retrieval bag comprises a cuff formed about the opening, and wherein the rim defines a rim axis, the tissue retrieval bag having an elongate profile relative to the rim axis such that the opening is positioned adjacent the proximal end and the tissue retrieval bag comprises a distal portion extending distally from the opening with respect to the rim axis beyond the cuff towards the distal end of the tissue retrieval bag;
an actuator rod extending at least partially into the hollow lumen of the introducer, the actuator rod having a proximal end and a distal end; and
a pair of support arms extending from the distal end of the actuator rod;
wherein the tissue retrieval bag is actuatable by the actuator rod from a stowed position in which the tissue retrieval bag is rolled about the rim axis within the hollow lumen of the introducer with the pair of support arms positioned within the cuff of the tissue retrieval bag to an open position in which the tissue retrieval bag is substantially outside the introducer; and
wherein the support arms are biased in a first direction to position the tissue retrieval bag with the rim axis transverse to the longitudinal axis and biased in a second direction to open the opening when the tissue retrieval bag is actuated to the open position.
2. The tissue retrieval system of claim 1 , wherein the support arms each comprise a curved profile to open the opening when the tissue retrieval bag is actuated to the open position.
3. The tissue retrieval system of claim 1 , wherein the tissue retrieval bag is further actuatable by the actuator rod from the open position to a closed position in which support arms are withdrawn from the cuff.
4. The tissue retrieval system of claim 1 , wherein the tissue retrieval bag further comprises a cord loop positioned in cuff of tissue retrieval bag.
5. The tissue retrieval system of claim 4 , further comprising a guide bead positioned proximal the proximal end of the tissue retrieval bag relative to the rim axis, wherein the cord loop extends through the guide bead and the support arms extend through the guide bead with the tissue retrieval bag in the stowed position and the open position.