Grab bag

Abstract

The application discloses a taking bag for a surgical operation, comprising: a bag body having a bag wall, an inner cavity and an auxiliary instrument interface, wherein the auxiliary instrument interface is arranged on the bag wall; a clamp mechanism, the clamp mechanism comprising an end effector assembly and an operation assembly, the end effector assembly being arranged in the inner cavity of the bag body, and the operation assembly being located outside the bag body and being detachably connected with the end effector assembly through the auxiliary instrument interface. The taking bag of the application solves the problem of tumor diffusion caused by the need to take out the part of the clamp mechanism in contact with the tumor from the taking bag during the operation.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a retrieval bag. Background Technology

[0002] The retrieval bag consists of an insulated bag body made of flexible material, with a main opening and several auxiliary openings. The diameter of the main opening is larger than the diameter of the auxiliary openings. The auxiliary openings are used to insert visual instruments, auxiliary clamps, and other instruments.

[0003] In one type of retrieval bag in the prior art, both the main bag opening and the auxiliary bag opening are open.

[0004] During use, at least three trocars are inserted into the abdominal cavity to create several channels. For ease of description, these are designated as the first channel, second channel, and third channel. The number of channels is related to the number of instruments required for insertion.

[0005] The visualization instruments are inserted into the abdominal cavity through the first channel to facilitate subsequent operations.

[0006] With the aid of visualization instruments, an electrocoagulation knife (or other cutting instrument) is inserted into the abdominal cavity through the second channel to separate the tumor from normal tissue, and then the electrocoagulation knife is removed.

[0007] The retrieval bag is inserted into the abdominal cavity through the second channel, and the clamps are inserted into the abdominal cavity through the third channel. With the assistance of the clamps, the tumor is placed into the retrieval bag through the main opening of the retrieval bag. Then the main opening is tightened and pulled out of the body through the second channel. The first and second auxiliary bag openings are then tightened and pulled out of the body through the first and third channels, respectively.

[0008] Insert the clamps into the second auxiliary bag opening and insert the rotary cutter into the main bag opening through the second channel. With the aid of visualization instruments and the clamps, use the rotary cutter to break up the tumor. During this process, the clamps, placed in the retrieval bag, will become contaminated with tumor tissue fluid.

[0009] After the rotary cutting is completed, the visualization instrument, clamps, and rotary cutter are removed. Then, the first and second auxiliary bag openings are tightened and inserted back into the body. Finally, the entire retrieval bag is pulled out through the second channel. However, during the removal process, the tissue fluid on the clamps will contaminate the auxiliary bag openings, which will cause the tissue fluid on the auxiliary bag openings to contaminate the inside of the body during the insertion back into the body, bringing the risk of tumor spread.

[0010] In summary, the existing clamp mechanism can only be removed from the retrieval bag during the operation. However, during the removal of the clamp mechanism, the tumor tissue fluid adhering to the clamp can contaminate the opening of the auxiliary bag and then contaminate other tissues, bringing the risk of metastasis to the operation. Summary of the Invention

[0011] To address the shortcomings of existing technologies, this invention aims to provide a retrieval bag that solves the problem of tumor spread and implantation caused by the need to remove the clamping mechanism that is in contact with the tumor from the retrieval bag during surgery.

[0012] This invention is achieved through the following technical solution: a retrieval bag, comprising: a bag body, the bag body including a bag wall, an inner cavity, and an auxiliary device interface, the auxiliary device interface being disposed in the bag wall; a clamping mechanism, the clamping mechanism including an end effector assembly and an operating assembly, the end effector assembly being disposed in the inner cavity of the bag body, the operating assembly being located on the outside of the bag body and the operating assembly being detachably connected to the end effector assembly through the auxiliary device interface; in response to the driving of the operating assembly, the auxiliary device interface drives the end effector assembly to perform grasping and releasing actions.

[0013] Furthermore, the operating component is detachably connected to the auxiliary instrument interface, and the end effector component is connected to the auxiliary instrument interface.

[0014] Furthermore, the assistive device interface includes a positioning element, and the end effector assembly is connected to the positioning element.

[0015] Furthermore, the auxiliary device interface includes an inner hole, and the positioning element is sealed to the inner hole.

[0016] Furthermore, the auxiliary device interface also includes an inner hole formed by the bag wall that communicates with the inner cavity, and the positioning element is housed in the inner hole and sealed to the inner hole.

[0017] Furthermore, the assistive device interface includes a movable component, at least a portion of which is movably disposed within the positioning component.

[0018] Furthermore, the end effector assembly includes: a first gripper connected to a positioning member; a second gripper rotatably connected to the first gripper and drivably connected to a moving member; wherein the moving member moves to drive the second gripper to rotate relative to the first gripper to perform gripping and releasing actions.

[0019] Furthermore, the moving part is drivably connected to the second gripper via a linkage assembly.

[0020] Furthermore, the linkage assembly includes a first link and a second link that are pivotally connected in sequence, wherein the first link is rotatably connected to a movable member; the second link is rotatably connected to a second gripper, and when the movable member moves, the first link and the second link swing in opposite directions.

[0021] Furthermore, a seal is provided between the moving part and the positioning part.

[0022] Furthermore, the operating components include a handle assembly and a lever assembly, the distal end of which is detachably connected to the end effector assembly. When the lever assembly is connected to the end effector assembly, the end effector assembly can be driven to perform corresponding actions by operating the handle assembly.

[0023] Furthermore, the operating components include a handle assembly and a lever assembly, with the proximal end of the handle assembly drivably connected to the lever assembly; the distal end of the lever assembly is detachably connected to an auxiliary device interface, and the end effector assembly is connected to the auxiliary device interface; in response to the operation of the handle assembly, the lever assembly drives the end effector assembly to perform grasping and releasing actions through the auxiliary device interface.

[0024] Furthermore, the pole assembly includes an outer tube and an operating lever located inside the outer tube and movable relative to the outer tube.

[0025] Furthermore, the assistive device interface includes a positioning element, and the distal end of the outer tube is detachably connected to the positioning element.

[0026] Furthermore, the positioning element is connected to the outer sleeve by threads.

[0027] Furthermore, the assistive device interface also includes a movable component, at least a portion of which is movably disposed within a positioning component. The movable component is drivably connected to an end effector assembly, and an operating lever is detachably connected to the movable component.

[0028] Furthermore, the operating lever is threadedly connected to the moving part.

[0029] Furthermore, the handle assembly also includes: a fixed handle, which is fixedly connected to the end of the outer sleeve away from the end effector assembly; and a movable handle, which is connected to the end of the operating lever away from the end effector assembly; wherein the movable handle is rotatably connected to the fixed handle so as to move the operating lever relative to the outer sleeve by driving the movable handle to rotate relative to the fixed handle.

[0030] Furthermore, the assistive device interface includes a positioning element and a moving element, the moving element being movably disposed relative to the positioning element; an operating component is detachably connected to both the positioning element and the moving element, the positioning element being connected to an end effector assembly, and the moving element being drivably connected to the end effector assembly; in response to the actuation of the operating component, the moving element moves to drive the end effector assembly to perform grasping and releasing actions.

[0031] Furthermore, the operating component includes a lever assembly, which includes an outer tube and an operating lever located inside the outer tube and movable relative to the outer tube; the outer tube is detachably connected to a positioning element, and the operating lever is detachably connected to a moving element.

[0032] Furthermore, all detachable connections are threaded connections.

[0033] Furthermore, the end effector assembly includes a first gripper and a second gripper rotatably connected to the first gripper; the first gripper is connected to a positioning member, and a moving member is drivably connected to the second gripper; in response to actuation by the actuation component, the moving member moves to drive the second gripper to rotate to perform gripping and releasing actions.

[0034] Furthermore, the assistive device interface also includes a linkage assembly, through which the moving part is drivably connected to the second gripper.

[0035] Furthermore, the assistive device interface also includes an inner hole formed by the bag wall, in which the positioning element is received and sealed to the inner hole.

[0036] Furthermore, at least a portion of the movable part is movably disposed within the positioning part, and at least a portion therebetween the positioning part and a seal is provided.

[0037] Furthermore, at the auxiliary device interface, the auxiliary device interface isolates the inner cavity of the bag from the outer side of the bag.

[0038] Compared with the prior art, the beneficial effects of the present invention are as follows: by setting a detachable clamping mechanism, specifically, the end effector assembly is pre-placed inside the bag, and the operating component is located outside the bag and detachably connected to the bag, thereby solving the problem of needing to remove the end effector assembly and avoiding secondary contamination; at the same time, by placing only the end effector assembly inside the bag and the operating component outside the bag, not only is the overall volume of the bag reduced when inserted into the human body, but placing the operating component outside the bag also facilitates operation by medical personnel. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the retrieval bag provided by the present invention;

[0040] Figure 2 yes Figure 1 A schematic diagram of the clamping mechanism of the retrieval bag shown;

[0041] Figure 3 yes Figure 1 An exploded view of the retrieval bag shown;

[0042] Figure 4 yes Figure 1 A cross-sectional view of the retrieval bag shown;

[0043] Figure 5 yes Figure 2 A cross-sectional view of the clamping mechanism shown;

[0044] Figure 6 yes Figure 5 A magnified view of a section at point A in the middle;

[0045] Figure 7yes Figure 1 A cross-sectional view of the end effector assembly of the retrieval bag shown;

[0046] Figure 8 yes Figure 2 A cross-sectional view of the operating components of the clamping mechanism shown;

[0047] Figure 9 yes Figure 8 A magnified view of a section at point B in the middle;

[0048] Figure 10 yes Figure 8 A magnified view of a section at point C;

[0049] Figure 11 This is a perspective view of the retrieval bag of the present invention;

[0050] Figure 12 yes Figure 11 The diagram shows the main opening of the retrieval bag in its normally unfolded state;

[0051] Figure 13 yes Figure 11 An exploded view of the retrieval bag shown;

[0052] Figure 14 This is a schematic diagram of the connecting clamp mechanism and the visualization device of the retrieval bag of the present invention;

[0053] Figure 15 yes Figure 13 A cross-sectional view of the retrieval bag shown;

[0054] 10. Bag body; 101. Bag wall; 102. Inner cavity; 11. Visual instrument interface; 111. Visual instrument channel structure; 112. First connecting part; 114. First inner hole; 12. Auxiliary instrument interface; 122. Positioning element; 124. Second inner hole; 13. Main bag opening; 14. Sealing cap; 141. Positioning hole; 142. Vent; 143. Protrusion; 15. Mounting ring; 153. Recess; 21. End gripper 211. First gripper; 212. Second gripper; 22. Operating component; 221. Outer sleeve; 222. Operating lever; 223. Fixed handle; 224. Movable handle; 225. Stop; 226. Operating part; 227. Circumferential groove; 23. Moving part; 24. First connecting rod; 25. Seal; 26. Second connecting rod; 30. Luer valve; 40. Knob; 42. Connecting protrusion; 50. Visual instrument. Detailed Implementation

[0055] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without inventive effort are within the scope of protection of this invention.

[0056] In this invention, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, a movable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two elements or the interaction between two elements, such as contact. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. It should be noted that when "connected" or "linked" is preceded by a qualifier, it has the meaning defined by that qualifier, excluding only obviously excluded cases, but not other possible cases. For example, "detachable connection" refers to a detachable connection, excluding an integral part, but movable connections are not excluded.

[0057] Please see Figure 1 and Figure 2 This embodiment provides a retrieval bag for surgical procedures. The retrieval bag includes a bag body 10 and a clamping mechanism. The bag body 10 has a bag wall 101, an inner cavity 102, and an auxiliary instrument interface 12. The bag wall 101 surrounds the inner cavity 102, and the auxiliary instrument interface 12 is disposed in the bag wall. The clamping mechanism passes through the auxiliary instrument interface 12 to act on tissue within the bag body 10. The tissue may be a tumor, etc. The clamping mechanism includes a detachably connected end effector assembly 21 and an operating assembly 22. The end effector assembly 21 is disposed within the bag body 10 and extends toward the inner cavity of the bag body 10. The operating assembly 22 is located outside the bag body 10 and is used to drive the end effector assembly 21 to perform corresponding actions.

[0058] The tumors mentioned above can be divided into malignant tumors and benign tumors. If the tissue fluid of a malignant tumor gets into other normal tissues during the cutting or removal process, it is very easy for tumor cells to be implanted and spread, leading to postoperative tumor recurrence. Even benign tumors, such as fibroids, have a certain rate of malignant implantation. Therefore, tumor tissue fluid should be kept away from other tissues during the operation.

[0059] To avoid the problem of the end effector assembly 21 potentially contaminating the auxiliary instrument interface 12 of the bag 10 or other human tissues when it is removed at the end of the surgery, this invention provides a detachable clamping mechanism. Specifically, the end effector assembly 21 is pre-placed inside the bag 10, and the operating component 22 is located outside the bag 10 and detachably connected to the end effector assembly 21 inside the bag 10. This eliminates the need to remove the end effector assembly 21 from the bag 10 at the end of the surgery, solving the problem of contamination or infection caused by removing the end effector assembly 21. Furthermore, with only the end effector assembly 21 inside the bag 10 and the operating component 22 outside the bag 10, the overall volume of the bag 10 when inserted into the human body is reduced, and the operating component 22 being located outside the bag 10 facilitates operation by medical personnel.

[0060] The end effector assembly 21 is located inside the bag body 10, the operating assembly 22 is located outside the bag body 10, and the auxiliary instrument interface 12 is disposed on the bag wall of the bag body 10. The operating assembly 22 is detachably connected to the end effector assembly 21 through the auxiliary instrument interface 12. Specifically, the end effector assembly 21 is connected to the auxiliary instrument interface 12, and one end of the operating assembly 22 is inserted into and detachably connected to the auxiliary instrument interface 12, thereby realizing the detachable connection between the operating assembly 22 and the end effector assembly 21 through the auxiliary instrument interface 12.

[0061] Specifically, in combination Figure 3 , Figure 4 As shown, the auxiliary device interface 12 includes a positioning element 122, a transmission mechanism, and a second inner hole 124. The positioning element 122 is disposed inside the second inner hole 124, that is, the positioning element 122 is housed within the second inner hole. The positioning element 122 is sealed to the second inner hole 124. According to one embodiment, the outer side of the positioning element 122 is tightly fitted to the inner wall of the second inner hole 124, which can be achieved by bonding or other methods. The end effector assembly 21 is disposed at the end of the positioning element 122 facing the inner cavity, and one end of the operating assembly 22 is inserted into the positioning element 122 via the outside of the bag body 10, and is drivably and detachably connected to the end effector assembly 21. Specifically, the operating assembly 22 and the end effector assembly 21 are connected via a transmission mechanism. Further, the operating assembly 22 and the end effector assembly 21 are connected via the positioning element 122 and the transmission mechanism. The second inner hole 124 communicates with the inner cavity of the bag body 10. When the positioning member 122 is connected to the second inner hole 124, it forms a seal on the second inner hole 124, so that the inner cavity of the bag body 10 at the auxiliary device interface 12 is not connected to the outside. In this embodiment, the second inner hole 124 is formed by extending outward from the bag wall 101 and has an opening at the end, which is the opening of the second inner hole 124.

[0062] Combination Figures 5 to 7As shown, the transmission mechanism transmits the driving force of the operating component 22 to the end effector assembly 21. The transmission mechanism includes a movable member 23 and a linkage assembly. The movable member 23 is movably disposed within the positioning member 122; the linkage assembly is drivably connected to the end effector assembly 21, wherein the movable member 23 is drivably connected to the linkage assembly to drive the end effector assembly 21 to move via the linkage assembly. The movable member 23 is capable of moving along the axial direction of the positioning member 122 along the inner wall of the positioning member 122. The linkage assembly is connected to the movable member 23, thereby converting the linear motion of the movable member 23 into the gripping and releasing action of the end effector assembly 21. Specifically, the movable member 23 is movably disposed within the inner hole of the positioning member 122.

[0063] The end effector assembly 21 includes a first gripper 211 and a second gripper 212. The first gripper 211 is connected to the positioning member 122. The second gripper 212 is rotatably disposed on the first gripper 211. A linkage assembly is drivably connected to the second gripper 212 to drive the second gripper 212 to rotate relative to the first gripper 211.

[0064] Combination Figure 6 , Figure 7 As shown, this embodiment provides one implementation of the end effector assembly 21. Specifically, the end effector assembly 21 has two grippers: a first gripper 211 and a second gripper 212, wherein the first gripper 211 is fixedly connected to the positioning member 122. In another embodiment, the first gripper 211 and the positioning member 122 may also be an integral structure.

[0065] The first gripper 211 includes a claw-shaped portion that cooperates with the second gripper 212 to achieve gripping and releasing functions, and also includes a middle portion for fixing or integrally forming the claw-shaped portion with the end of the positioning member 122 facing the inner cavity 102. The claw-shaped portion is fixedly connected to or integrally formed with the middle portion. The second gripper 212 is rotatably connected to the first gripper 211 through a pin provided in the middle portion. The movement power of the second gripper 212 comes from the transmission mechanism. Specifically, the operating component 22 drives the moving member 23 to move, the moving member 23 drives the linkage assembly to move, and the linkage assembly drives the second gripper 212 to rotate. The linkage assembly converts the linear motion of the moving member 23 into the rotational motion of the second gripper 212.

[0066] The linkage assembly includes a first link 24 and a second link 26 pivotally connected in sequence. One end of the first link 24 is rotatably connected to a movable member 23, and the other end is rotatably connected to one end of the second link 26. The other end of the second link 26 is fixedly connected to a second gripper 212. In another embodiment, the other end of the second link 26 and the second gripper 212 can be an integral structure. When the movable member 23 moves, the first link 24 and the second link 26 swing in opposite directions.

[0067] The linkage assembly can be configured in various ways. This embodiment provides a specific implementation using two linkages similar to a bicycle chain. The two linkages, and the first linkage 24 and the moving member 23, are rotatably connected via pins and holes. Specifically, the movement of the moving member 23 moves and rotates the first linkage 24, which in turn moves and rotates the second linkage 26. The second linkage 26 then rotates the second gripper 212 relative to the first gripper 211, thus enabling the end effector assembly 21 to perform gripping and releasing functions. The moving member 23 moves towards the inner cavity of the bag body 10, driving the second gripper 212 along the direction of the first linkage 24 and the second linkage 26. Figure 7 The second gripper 212 rotates clockwise, gradually increasing the space between the first gripper 211 and the second gripper 212, thus releasing the end effector assembly 21. The moving part 23 moves away from the inner cavity of the bag body 10, driving the second gripper 212 along the first link 24 and the second link 26. Figure 7 As the second gripper 212 rotates counterclockwise, the space between the second gripper 212 and the first gripper 211 gradually decreases, thereby enabling the end effector assembly 21 to perform its gripping function. The moving part 23 will not disengage from the inner hole of the positioning part 122 during movement, thus maintaining the seal of the moving part 23 over the inner cavity of the bag body 10.

[0068] like Figure 7 As shown, a sealing element 25 is provided between the moving part 23 and the positioning part 122. The sealing element 25 can separate the outer side of the bag body from the inner cavity of the bag body, and prevent contamination of the operating component 22 after it is connected to the end effector component 21, so that the operating component 22 will not pose a risk of implantation and contamination to normal tissue. Specifically, the sealing element 25 can be a sealing ring, and the outer wall of the moving part 23 has a mounting groove. The sealing element 25 is disposed in the mounting groove and is interference-fitted with the inner wall of the positioning part 122.

[0069] As can be seen, the auxiliary device interface 12 achieves sealing and isolation between the inner cavity and the outer side of the bag 10, further preventing tumor tissue fluid in the inner cavity from contaminating the normal tissue on the outer side of the bag 10, and improving the effect of preventing tumor spread and implantation. In other words, at the auxiliary device interface 12, the inner cavity 102 of the bag 10 is isolated from the outer side of the bag 10.

[0070] In this embodiment, the operating component 22 is mainly used to cooperate with the end effector component 21 inside the bag 10 to drive the end effector component 21 to grasp or release the tumor.

[0071] The operating component 22 includes a handle assembly and a lever assembly, the distal end of which is detachably connected to the end effector assembly. When the lever assembly is connected to the end effector assembly, the end effector assembly can be driven to perform a corresponding action by operating the handle assembly. The distal end of the lever assembly refers to the end furthest from the handle assembly, and the proximal end of the lever assembly refers to the end closest to the handle assembly.

[0072] In this embodiment, a handle assembly is provided to facilitate the surgeon's control of the end effector assembly during surgery, while the lever assembly is used to transmit the power of the handle assembly to the end effector. The handle assembly adopts a scissor-handle-shaped structure for easy operation by the surgeon.

[0073] Combination Figures 7 to 10 As shown, according to one embodiment of the operating assembly 22, the lever assembly includes an outer sleeve 221 detachably connected to the positioning member 122 and an operating lever 222 detachably connected to the moving member 23. The operating lever 222 is movably inserted into the outer sleeve 221, one end of which is detachably connected to the positioning member 122. Furthermore, one end of the operating lever 222 extends from the outer sleeve 221 and is detachably connected to the end effector assembly 21.

[0074] Specifically, the auxiliary device interface 12 includes a positioning member 122, and one end of the outer sleeve 221 is inserted into and threadedly connected to the positioning member 122. The transmission mechanism includes a moving member 23, at least a portion of which is movably disposed within the positioning member 122. The moving member 23 moves to drive the end effector assembly 21 to move. An operating lever 222 is threadedly connected to the moving member 23, thereby detachably connecting the operating lever 222 to the end effector assembly 21 via the moving member 23. Movement of the operating lever 222 drives movement of the moving member 23. More specifically, one end of the outer sleeve 221 is inserted into and threadedly connected to the positioning member 122, and at least a portion of the moving member 23 is movably disposed within the positioning member 122.

[0075] like Figure 9 and Figure 10 As shown, the length of the operating lever 222 is greater than the length of the outer tube 221, so that both ends of the operating lever 222 extend out of the outer tube 221 respectively. Both the outer tube 221 and the end of the operating lever 222 away from the handle assembly are provided with external threads. One end of the operating lever 222 extends out and is threadedly connected to the moving part 23, and the other end of the operating lever 222 extends out and is connected to the handle assembly. The end of the operating lever 222 connected to the handle assembly is provided with a stop part 225.

[0076] The handle assembly includes a fixed handle 223 and a movable handle 224. The fixed handle 223 is connected to the end of the outer sleeve 221 away from the end effector assembly 21, and the movable handle 224 is connected to the end of the operating lever 222 away from the end effector assembly 21. The movable handle 224 is rotatably connected to the fixed handle 223 so that rotating the movable handle 224 relative to the fixed handle 223 moves the operating lever 222 relative to the outer sleeve 221.

[0077] like Figure 5 and Figure 10 As shown, the fixed handle 223 and the movable handle 224 are rotatably connected by a pin, and a spring is provided between the fixed handle 223 and the movable handle 224. The ends of the fixed handle 223 and the movable handle 224 away from the outer tube 221 are respectively provided with operating holes for easy hand gripping by the operator. The fixed handle 223 is rotatably connected to the proximal end of the outer tube 221 by a knob 40. The movable handle 224 is connected to the proximal extension of the operating rod 222. By driving the movable handle 224 to rotate, the operating rod 222 moves along the longitudinal axis of the outer tube 221, thereby driving the moving part 23 to move along the longitudinal axis of the positioning part 122.

[0078] like Figure 10 As shown, one end of the knob 40 is connected to the outer sleeve 221, and the other end is connected to the fixed handle 223. Specifically, the end of the knob 40 away from the handle assembly is fixed to the outer sleeve 221. The fixing method can be screw fixing or other methods well known to those skilled in the art. The end of the knob 40 near the handle assembly includes a connecting protrusion 42. The fixed handle 223 includes a circumferential groove 227. The connecting protrusion 42 and the circumferential groove 227 are fitted together, so that the knob 40 and the fixed handle form a fixed connection in the longitudinal direction of the outer sleeve 221. The knob 40 can rotate 360 ​​degrees relative to the fixed handle 223 about the longitudinal axis of the outer sleeve 221 as the central axis, and the outer sleeve 221 is rotated by the knob 40. The operating lever 222 also includes a stop 225 and an operating part 226. The stop 225 is spherical. The operating lever 222 passes through the movable handle 224, and the stop 225 is located inside the movable handle 224, so that the operating lever 222 and the movable handle 224 are fixedly connected in the longitudinal axis direction of the operating lever 222. The operating lever 222 can rotate 360 ​​degrees relative to the movable handle 224 about the longitudinal axis of the operating lever 222 as the central axis. The operating lever 222 can be rotated by rotating the operating part 226, and the operating lever 222 can be moved along the longitudinal axis direction of the outer sleeve 221 by the movable handle 224.

[0079] In this invention, before using the clamping mechanism, the operating component 22 on the outside of the bag body must be assembled with the end effector component 21 located in the inner cavity of the bag body. Specifically, during assembly, the operating rod 222 is inserted into the positioning member 122. By rotating the operating part 226 of the operating rod 222, the operating rod is rotated and threadedly connected to the moving member 23. The outer tube 221 is inserted into the positioning member 122. By rotating the knob 40, the outer tube 221 is rotated and threadedly connected to the positioning member 122. This completes the detachable connection between the operating component 22 and the end effector component 21 through the auxiliary instrument interface 12. There is no fixed order for connecting the outer tube 221 or the operating rod 222 first; the operator can choose according to their usage habits. Because the positioning element 122 is connected to the second inner hole, the operator holds the auxiliary instrument interface 12, specifically the outer wall of the second inner hole, to keep the positioning element 122 stationary. For example, another clamp can be inserted into the abdominal cavity to clamp the auxiliary instrument interface 12, specifically the outer wall of the second inner hole, to keep it stable. Thus, when the outer tube 221 is screwed into the positioning element 122, the positioning element 122 will not rotate. The moving element 23 is connected to the end effector assembly 21, which is connected to the positioning element 122. Therefore, when the operating lever 222 is screwed in, the moving element 23 will not rotate relative to the positioning element 122. More specifically, the inner wall of the positioning element 122 includes a first inner wall and a second inner wall, with the first inner wall being closer to the outer side of the bag body 10 than the second inner wall. The first section of the inner wall has an internal thread, and the outer wall of the outer tube 221 has an external thread. The internal thread of the first section of the inner wall mates with the external thread of the outer tube 221, achieving a threaded connection between the positioning member 122 and the outer tube 221. The moving member 23 is housed within the second section of the inner wall of the positioning member 122. The inner hole of the moving member 23 has an internal thread, and the distal end of the operating rod 222 has an external thread. The internal thread of the moving member 23 mates with the external thread of the operating rod 222, achieving a threaded connection between the moving member 23 and the operating rod 222. The distal end of the operating rod 222 refers to the end furthest from the handle assembly. In use, the movable handle 224 is driven to rotate relative to the fixed handle 223. The rotation of the movable handle 224 causes the operating rod 222 to slide relative to the outer tube 221, which in turn causes the moving member 23 to slide. This, through the linkage assembly, causes the second gripper 212 to rotate relative to the first gripper 211, thereby opening or closing the end effector assembly 21.

[0080] like Figure 3 , Figure 4As shown, in one embodiment, the bag body 10 of the retrieval bag includes a visualization instrument interface 11, which is disposed on the bag wall 101. The bag body 10 also includes a visualization instrument channel structure 111 connected to the visualization instrument interface 11. The visualization instrument channel structure 111 is used to accommodate a visualization instrument 50 to observe the interior of the bag body 10. In this embodiment, the visualization instrument is an endoscope, which can be inserted into the visualization instrument channel structure 111 to observe the interior of the bag body 10, providing the doctor with an operating field of view.

[0081] The visualization instrument channel structure 111 is sealed to the visualization instrument interface 11 so that the outside of the visualization instrument interface 11 is not in communication with the inner cavity 102. Optionally, the sealing connection is achieved by adhesive bonding. The visualization instrument channel structure 111 is connected to the visualization instrument interface 11 and forms a fluoroscopic channel, which separates the fluoroscopic channel from the inner cavity.

[0082] like Figure 3 As shown, the visualization instrument interface 11 includes a first inner hole 114, which penetrates the visualization instrument interface 11 and communicates with the inner cavity 102 of the bag body 10. The visualization instrument channel structure 111 is sealed to the first inner hole 114. The visualization instrument channel structure 111 includes a first connecting part 112, which is tightly fitted to the visualization instrument interface 11. This can be achieved by bonding or other methods to fix the two together and form a seal. The connection between the visualization instrument channel structure 111 and the visualization instrument interface 11 can also be other technical means well known to those skilled in the art, as long as the connection can achieve relative fixation between the visualization instrument channel structure 111 and the visualization instrument interface 11 and form a seal for the visualization instrument interface 11.

[0083] Specifically, such as Figures 11 to 15 As shown, the visualization instrument channel structure 111 is cylindrical with one end open and the other closed. The closed end is placed towards the inner cavity of the bag body 10. The visualization instrument 50 is inserted into the visualization instrument channel structure 111 through the opening to observe the situation inside the cavity. The visualization instrument channel structure 111 is located between the inner wall of the first inner hole 114 of the visualization instrument interface 11 and the fluoroscopic channel, and also between the inner cavity 102 and the fluoroscopic channel, thus separating the fluoroscopic channel and the inner cavity. According to another embodiment, the visualization instrument channel structure 111 is integrally formed with the bag wall 101, that is, the visualization instrument channel structure 111 is formed by extending from the bag wall 101 into the inner cavity 102, and the extended end is closed.

[0084] At least a portion of the visualization instrument channel structure 111 is made of transparent material to facilitate the entry of an endoscope into the fluoroscopic channel and to allow visualization of the internal lumen through the end of the visualization instrument channel structure. The visualization instrument channel structure 111 may also be entirely made of transparent material.

[0085] The visualization instrument 50, such as an endoscope, is inserted into the visualization instrument channel structure 111 to observe the lumen 102. The visualization instrument channel structure 111 is closed relative to the lumen 102 and is not connected to the lumen 102. Therefore, the visualization instrument 50 will not come into contact with the tumor tissue fluid in the lumen 102 during the entire operation. Moreover, the visualization instrument interface 11 and the visualization instrument channel structure 111 are always kept sealed, thus avoiding the risk of tumor seeding and spread due to the use of the visualization instrument.

[0086] like Figure 11 and Figure 12 As shown, the bag body 10 also includes a main opening 13, through which the tissue to be cut is placed into the bag body 10. In one embodiment, the main opening 13 extends upward from the bag wall 101 and is open at the end. The tissue to be cut is placed into the bag body 10 through the main opening 13, and various medical devices and cutting tools can also be inserted into the bag body 10 through the main opening 13 for operation. Figure 11 The image shows the state of the main bag opening 13 when it is pulled out of the body through the puncture device channel. Since the bag body 10 is flexible, the main bag opening 13 adapts to the shape of the puncture device channel at this time. Figure 12 The main bag opening 13 shown is in a normally open state. It can be seen that the main bag opening 13 should be large enough so that the tissue to be cut can be placed into the bag body 10 through the main bag opening 13. The method of using the retrieval bag of the present invention will be described in detail later.

[0087] Combination Figure 4 and Figure 13 As shown, the retrieval bag also includes a sealing assembly, which includes a sealing cap 14 and a mounting ring 15. The sealing assembly is operably mounted on the main bag opening 13. Both the sealing cap 14 and the mounting ring 15 have a certain degree of elasticity, for example, they can be made of rubber. The inner side of the sealing cap 14 includes a ring of protrusions 143 extending circumferentially along the sealing cap 14, and the outer side of the mounting ring 15 includes a ring of recesses 153 extending circumferentially along the mounting ring 15. The protrusions 143 on the sealing cap and the recesses 153 on the mounting ring are tightly engaged together by form-fitting, so that the sealing cap 14 and the mounting ring 15 are relatively fixed and sealed. During installation, the bag body 10 at the upper part of the main bag opening 13 is pulled out from inside the mounting ring 15. At this time, the mounting ring 15 is sleeved on the outer side of the upper bag body 10. Then, the bag body 10 is folded down on the outer side of the mounting ring 15. Finally, the sealing cap 14 is engaged on the outer side of the mounting ring 15 and clamps the bag body 10 folded on the outer side of the mounting ring 15.

[0088] Combination Figure 4 and Figure 13 As shown, the sealing cap 14 also has a positioning hole 141 for positioning and installing the rotary cutter. The positioning hole 141 has a small diameter and a certain degree of elasticity, so when the rotary cutter is inserted into the positioning hole 141, a seal is formed at the positioning hole 141 due to the elastic properties of the material. The rotary cutter is a conventional surgical instrument and will not be described in detail here. The bag body 10 has an inflated state and an inflated state. The sealing cap 14 also includes a vent 142, which communicates with the inner cavity 102 to inflate the inner cavity or expel gas from the inner cavity. A Luer valve 30 is operably mounted on the vent 142. Opening the Luer valve 30 allows air to be inflated into the inner cavity of the bag body 10 through the vent 142, and closing the Luer valve maintains the airtightness of the vent 142. The Luer valve is a conventional valve well known to those skilled in the art, and its structure will not be described in detail here.

[0089] To facilitate understanding of the structure and usage of the retrieval bag of this invention, Figure 4 The diagram illustrates the left and right positions of the main pocket opening 13, auxiliary instrument interface 12, and visualization instrument interface 11 during surgery, demonstrating the use of the retrieval bag. The main pocket opening 13 is located between the auxiliary instrument interface 12 and the visualization instrument interface 11. The auxiliary instrument interface 12 is located to the right of the main pocket opening 13, and the visualization instrument interface 11 is located to the left of the main pocket opening 13. Specifically:

[0090] When tumor removal is complete, for example, three trocars are inserted into the abdominal cavity to form three channels, namely the first channel, the second channel, and the third channel. First, the delivery device is inserted into the abdominal cavity through the first channel. Then, the retrieval bag is placed into the body and unfolded through the delivery device. An endoscope is inserted through the second channel for auxiliary observation. A clamp is inserted through the third channel to place the tumor into the bag body 10 through the main bag opening 13. After that, the delivery device is withdrawn, the closure line of the main bag opening 13 is pulled out of the body, and the clamp in the third channel is removed. Then, a clamp is inserted through the first channel through the main bag opening 13. Then, one end of the operating component 22 of the drive end effector assembly 21 is inserted through the third channel. With the assistance of the clamp in the first channel, the operating component 22 is inserted into the auxiliary instrument interface 12 and... The auxiliary instrument interface 12 is connected to the end effector assembly 21. Then, the endoscope tip in the second channel is inserted into the visualization instrument channel structure 111. The clamp in the first channel is removed, the main bag opening 13 is tightened with the closing line, and the main bag opening 13 is pulled out of the body. The mounting ring 15 is placed on the outside of the main bag opening 13, and the main bag opening 13 is unfolded and folded over. The sealing cap 14 is placed on the mounting ring 15. The rotary cutter is inserted into the positioning hole 141 of the sealing cap 14. The Luer valve 30 is installed on the vent 142. The Luer valve 30 is opened to inflate the bag body 10, so that the inner cavity of the bag body 10 is filled. Then, the rotary cutter cuts the tumor in the inner cavity. During the cutting process, the end effector assembly 21 assists in clamping the tissue, making it easier for the rotary cutter to cut it. The endoscope observes the cutting situation in real time. After the excision is completed, the operating component 22 is separated from the auxiliary instrument interface 12, thereby separating it from the end effector component 21 and withdrawing it from the body. The endoscope is then withdrawn from the visualization instrument channel structure 111 and withdrawn from the body. Finally, the retrieval bag is removed from the human body. Throughout the entire operation, only the main bag opening 13 of the retrieval bag of this invention needs to be pulled out of the body during the operation. Since the visualization instrument 50 is not contaminated after the tumor excision, the visualization instrument 50 will not contaminate the visualization instrument interface 11 or other tissues and organs when it is withdrawn. The end effector component 21 itself is located inside the bag body 10 and does not need to be withdrawn, so it will not contaminate the auxiliary instrument interface 12, the operating component, or other tissues and organs, thus solving the problem of easy spread and implantation during surgery.

[0091] In summary, this embodiment, by setting a split clamping mechanism, allows the end effector assembly to be located inside the bag, while the operating assembly is located outside the bag and detachably connected to the end effector assembly via the auxiliary instrument interface. This achieves the goal of eliminating the need to remove the end effector assembly at the end of the surgery, thereby solving the problem in the prior art where removing the end effector assembly from the bag after the tumor has been excised would contaminate the auxiliary instrument interface or other tissues, causing tumor seeding and spread, thus improving the surgical outcome.

[0092] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0093] The detailed descriptions listed above are merely specific descriptions of feasible embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. All equivalent embodiments or modifications made without departing from the spirit of the present invention should be included within the scope of protection of the present invention.

Claims

1. A grab bag, characterized in that, The taking-out bag comprises: a bag body (10) comprising a bag wall (101), an inner cavity (102), and an auxiliary instrument interface (12) provided on the bag wall (101); a clamp mechanism comprising an end effector assembly (21) and an operation assembly (22), the end effector assembly (21) being provided in the inner cavity (102) of the bag body (10) and connected with the auxiliary instrument interface (12), the operation assembly (22) being located outside the bag body (10) and detachably connected with the end effector assembly (21) through the auxiliary instrument interface (12); the auxiliary instrument interface (12) comprises a positioning member (122) and a transmission mechanism, the operation assembly (22) and the end effector assembly (21) are connected through the positioning member (122) and the transmission mechanism, the transmission mechanism transmits the driving force of the operation assembly (22) to the end effector assembly (21), the transmission mechanism comprises a moving member (23), at least a part of the moving member (23) is movably provided in the positioning member (122), the moving member (23) is drivably connected with the end effector assembly (21); in response to the driving of the operation assembly (22), the moving member (23) can move along the axial direction of the positioning member (122) and drive the end effector assembly (21) to perform the grabbing and releasing actions.

2. The bag of claim 1, wherein, The operation assembly (22) is detachably connected with the auxiliary instrument interface (12).

3. The bag according to claim 1 or 2, characterized in that The end effector assembly (21) is connected with the positioning member (122).

4. The bag of claim 3, wherein, The auxiliary instrument interface (12) further comprises a second inner hole (124) formed by the bag wall (101) and communicating with the inner cavity (102), the positioning member (122) is accommodated in the second inner hole (124) and sealingly connected with the second inner hole (124).

5. The bag of claim 1, wherein, The end effector assembly (21) comprises: a first clamping jaw (211) connected with the positioning member (122); a second clamping jaw (212) rotatably connected with the first clamping jaw (211) and drivably connected with the moving member (23), wherein the moving member (23) moves to drive the second clamping jaw (212) to rotate relative to the first clamping jaw (211) to perform the grabbing and releasing actions.

6. The bag of claim 5, wherein, The moving member (23) is drivably connected with the second clamping jaw (212) through a linkage assembly.

7. The bag of claim 6, wherein, The linkage assembly comprises a first linkage (24) and a second linkage (26) sequentially pivotally connected, wherein the first linkage (24) is rotatably connected with the moving member (23); the second linkage (26) is fixedly connected with the second clamping jaw (212); when the moving member (23) moves, the swinging directions of the first linkage (24) and the second linkage (26) are opposite.

8. The bag of claim 1, wherein, A sealing member is arranged between the moving member (23) and the positioning member (122).

9. The bag of claim 1, wherein, The operation assembly (22) comprises: A handle assembly and a shaft assembly, the handle assembly being drivingly connected with a proximal end of the shaft assembly; a distal end of the shaft assembly being detachably connected with the auxiliary instrument interface (12), the end effector assembly (21) being connected with the auxiliary instrument interface (12); in response to the handle assembly being operated, the shaft assembly drives the end effector assembly (21) to perform a gripping and releasing action through the auxiliary instrument interface (12).

10. The bag of claim 9, wherein, The shaft assembly comprises an outer sleeve (221) and an operating rod (222) located in the outer sleeve (221) and movable relative to the outer sleeve (221).

11. The bag of claim 10, wherein, A distal end of the outer sleeve (221) is detachably connected with the positioning member (122).

12. The bag of claim 11, wherein, The positioning member (122) and the outer sleeve (221) are connected through a thread.

13. The retrieval bag of claim 10, wherein, The operating rod (222) is detachably connected with the moving member (23).

14. The bag of claim 13, wherein, The operating rod (222) is threadedly connected with the moving member (23).

15. The retrieval bag of claim 10, wherein, The handle assembly comprises: A fixed handle (223) connected with a proximal end of the outer sleeve (221); A movable handle (224) connected with a proximal end of the operating rod (222); The movable handle (224) is rotatably connected with the fixed handle (223) to move the operating rod (222) relative to the outer sleeve (221) by driving the movable handle (224) to rotate relative to the fixed handle (223).

16. The bag of claims 1 or 2, wherein, The operation assembly (22) is detachably connected with the positioning member (122) and the moving member (23), and the positioning member (122) is connected with the end effector assembly (21).

17. The retrieval bag of claim 16, wherein, The operation assembly (22) comprises a shaft assembly, the shaft assembly comprising an outer sleeve (221) and an operating rod (222) located in the outer sleeve (221) and movable relative to the outer sleeve (221); the outer sleeve (221) is detachably connected with the positioning member (122), and the operating rod (222) is detachably connected with the moving member (23).

18. The retrieval bag of claim 17, wherein, The detachable connections are all thread connections.

19. The retrieval bag of claim 16, wherein, The end effector assembly (21) comprises a first jaw (211) and a second jaw (212) rotatably connected with the first jaw (211); the first jaw (211) is connected with the positioning member (122), and the moving member (23) is drivingly connected with the second jaw (212); in response to the driving of the operation assembly (22), the moving member (23) moves to drive the second jaw (212) to rotate to perform a gripping and releasing action.

20. The retrieval bag of claim 19, wherein, The auxiliary instrument interface (12) further comprises a linkage assembly, and the moving member (23) is drivingly connected with the second jaw (212) through the linkage assembly.

21. The retrieval bag of claim 16, wherein, The auxiliary instrument interface (12) further comprises a second inner hole (124) formed by the bag wall (101), and the positioning member (122) is accommodated in the second inner hole (124) and is in sealing connection with the second inner hole (124).

22. The retrieval bag of claim 16, wherein, A sealing member is arranged between at least a part of the moving member (23) and the positioning member (122).

23. The retrieval bag of claim 1, wherein, At the auxiliary instrument interface (12), the auxiliary instrument interface (12) isolates the inner cavity (102) of the bag body (10) from the outside of the bag body (10).

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