Single incision laparoscopic tissue retrieval system
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 device comprising:
a tissue bag having an open end, a closed end, and an interior, the tissue bag comprising:
a first portion adjacent the open end; and
a second portion adjacent the closed end, the second portion comprising:
a first layer;
a second layer;
a space between the first and second layer; and
at least one vent fluidly coupling the space to ambient conditions exterior to the tissue bag;
wherein the second portion comprises a joint coupling the first layer and the second layer; and
wherein the vent comprises a gap in the joint.
2. The tissue retrieval device of claim 1 , wherein
the retrieval bag has a total depth extending between the open end and the closed end, wherein the first portion has a first depth extending from the open end to the joint, and wherein a ratio of the first depth to the total depth is between about 1:2 and 1:3.
3. The tissue retrieval device of claim 1 , wherein the first portion of the retrieval bag comprises a first material, and the second portion of the retrieval bag comprises a second material different from the first material.
4. The tissue retrieval device of claim 1 , wherein the first portion of the retrieval bag has a first thickness, and the second portion of the retrieval bag has a second thickness different from the first thickness.
5. The tissue retrieval device of claim 4 , wherein the second thickness is greater than the first thickness.
6. The tissue retrieval device of claim 5 , wherein the first portion comprises a first thickness of approximately 4 mil, and the second portion comprises a thickness of approximately 8 mil.
7. The tissue retrieval device of claim 1 , wherein the first portion comprises a first material having a first modulus of elasticity and the second portion comprises a second material having a second modulus of elasticity greater than the first modulus of elasticity.
8. The tissue retrieval device of claim 1 , wherein the joint comprises at least one of a welded connection, a bonded connection, and a sewn connection.
9. The tissue retrieval device of claim 1 , wherein the retrieval bag comprises at least one of a polyurethane film, a polyethylene film, a polyimide film, ripstop Nylon®, polyester, and Mylar®.
10. The tissue retrieval device of claim 1 , wherein the first portion of the retrieval bag comprises a cuff adapted to receive at least one support member therein.
11. The tissue retrieval device of claim 1 , further comprising a cord positioned in the first portion and operable to selectively close the open end of the bag.
12. The tissue retrieval device of claim 11 , wherein the first portion comprises a cuff having a passage therein and the cord is positioned in the passage.