Item bag

Abstract

This invention discloses a retrieval bag for surgical procedures. The retrieval bag includes: a bag body having a bag wall, an inner cavity, a first auxiliary interface, and a second auxiliary interface, both of which are located on the bag wall; a visualization instrument channel structure connected to the first auxiliary interface, forming a channel that seals the inner cavity of the bag for accommodating an endoscope to observe the cavity; and an end effector assembly disposed within the inner cavity of the bag and connected to the second auxiliary interface, eliminating the need to remove the end effector assembly from the bag at the end of the surgery. This invention's retrieval bag not only adapts to various auxiliary instruments, improving ease of use, but also avoids the problem of tumor tissue fluid contaminating other tissues due to instruments entering or exiting the retrieval bag.

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] Externally, a visualization instrument, such as an endoscope, is inserted into the first auxiliary pocket, a clamp is inserted into the second auxiliary pocket, and a rotary cutter is inserted into the main pocket through the second channel. With the assistance of the visualization instrument and clamp, the rotary cutter breaks up the tumor. During this process, the endoscope and clamp, 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 put back into the body. Finally, the entire retrieval bag is pulled out from the second channel. However, during the removal process, the tissue fluid on the visualization instrument and clamps will contaminate the auxiliary bag openings. This can lead to the tissue fluid on the auxiliary bag openings contaminating the body during the process of putting the bag back into the body, which may cause the tumor to spread.

[0010] In summary, existing retrieval bags require the insertion and removal of various instruments during surgery, such as endoscopes and clamps. Since these instruments come into contact with the tumor during surgery, and the bag opening is not kept sealed throughout the process, tissue fluid from each instrument will contaminate the auxiliary bag opening during the removal process. This can lead to the tissue fluid on the auxiliary bag opening contaminating other tissues during the repositioning process, increasing the risk of tumor seeding and spread. 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 failure of the auxiliary bag opening to remain sealed during use when multiple auxiliary instruments need to be inserted through the auxiliary bag opening 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, a first auxiliary interface and a second auxiliary interface, both the first auxiliary interface and the second auxiliary interface being disposed in the bag wall; a visualization instrument channel structure, the visualization instrument channel structure being connected to the first auxiliary interface, the visualization instrument channel structure forming a channel relatively closed to the inner cavity of the bag body, the channel being used to accommodate a visualization instrument for observing the inner cavity of the bag body; and an end effector assembly, the end effector assembly being disposed in the inner cavity of the bag body and connected to the second auxiliary interface, the end effector assembly being driven to perform grasping and releasing actions.

[0013] Furthermore, at the second auxiliary interface, the second auxiliary interface isolates the inner cavity of the bag from the outer side of the bag.

[0014] Furthermore, the end effector assembly is connected to and sealed to the second auxiliary interface so that the outside of the second auxiliary interface is not in communication with the inside of the cavity.

[0015] Furthermore, the second auxiliary interface includes a positioning element, through which the end effector assembly is connected to the second auxiliary interface.

[0016] Furthermore, the second auxiliary interface includes a positioning element and a second inner hole formed by the bag wall; the second inner hole communicates with both the inner cavity and the outer side of the bag body, and the positioning element is sealed to the second inner hole; the end effector assembly is connected to the positioning element.

[0017] Furthermore, the second auxiliary interface also includes a movable component, which is movably disposed within the positioning component, and a seal is provided between the movable component and the positioning component; the end effector assembly is drivably connected to the movable component.

[0018] Furthermore, the visualization instrument channel structure is sealed and connected to the first auxiliary interface.

[0019] Furthermore, the first auxiliary interface includes a first inner hole, which is connected to both the inner cavity and the outer side of the bag body. The visualization instrument channel structure is at least partially disposed in the first inner hole and is sealed to the first inner hole.

[0020] Furthermore, the visualization instrument channel structure includes one end facing the inner cavity, which is a closed structure, forming a channel that seals off the inner cavity of the bag.

[0021] Furthermore, the end effector assembly includes a first gripper and a second gripper, which can be driven to open and close relative to each other.

[0022] Furthermore, the bag includes a main opening through which tumor tissue is inserted into the inner cavity.

[0023] Furthermore, the retrieval bag also includes a sealing assembly operably mounted on the main bag opening, wherein the sealing assembly includes a positioning hole for positioning the rotary cutter.

[0024] Furthermore, an installation ring is provided at the main bag opening. The installation ring is fitted onto the main bag opening and at least part of the bag body above the main bag opening is folded over the outside of the installation ring. The sealing cap is snapped onto the outside of the installation ring and clamps the bag body folded over the outside of the installation ring.

[0025] Furthermore, the bag has an inflated state and an uninflated state. The sealing cap is provided with a vent that communicates with the inner cavity, so as to inflate the inner cavity with air or expel the gas in the inner cavity through the vent.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows: In order to avoid the problem that the auxiliary instrument may contaminate the bag opening when working through the auxiliary interface on the retrieval bag, thereby causing contamination of other tissues, the present invention fixes the end effector assembly and the visualization instrument channel structure to the two auxiliary interfaces on the retrieval bag body, so that the end effector assembly is placed in the inner cavity of the bag body and is not removed. The visualization instrument is observed through the visualization instrument channel structure without contacting the inner cavity, avoiding secondary contamination of tumor tissue fluid caused by the visualization instrument and end effector entering and exiting the auxiliary interfaces, reducing the risk of tumor spread, and improving the success rate of surgery. Attached Figure Description

[0027] Figure 1 This is a perspective view of the retrieval bag provided by the present invention; Figure 2 yes Figure 1 A cross-sectional view of the retrieval bag shown; Figure 3 yes Figure 1 A partially exploded view of the retrieval bag shown; Figure 4 yes Figure 1An exploded view of the retrieval bag shown; Figure 5 yes Figure 1 The diagram shown illustrates the main opening of the retrieval bag in its normally unfolded state. Figure 6 This is a schematic diagram of the connecting clamp mechanism and the visualization device of the retrieval bag of the present invention; Figure 7 yes Figure 6 A cross-sectional view of the retrieval bag shown; Figure 8 yes Figure 7 A cross-sectional view of the clamping mechanism shown; Figure 9 yes Figure 8 A magnified view of a section at point A in the middle; Figure 10 yes Figure 7 A cross-sectional view of the end effector assembly shown; Figure 11 yes Figure 7 A cross-sectional view of the operating components shown; Figure 12 yes Figure 11 A magnified view of a section at point B.

[0028] Figure 13 yes Figure 11 A magnified view of a section at point C.

[0029] 10. Bag body; 101. Bag wall; 102. Inner cavity; 11. First auxiliary interface; 111. Visual instrument channel structure; 112. First connecting part; 114. First inner hole; 12. Second auxiliary 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 effector Instrument components; 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

[0030] 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.

[0031] 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.

[0032] like Figures 1 to 3 and Figures 6 to 7 As shown, a retrieval bag of the present invention is used in surgical procedures. The retrieval bag includes a bag body 10, a visualization instrument channel structure 111, and an end effector assembly 21. The bag body 10 has a bag wall 101 and an inner cavity 102. The bag wall 101 surrounds the inner cavity 102. The bag body 10 also includes a first auxiliary interface 11 and a second auxiliary interface 12. The visualization instrument channel structure 111 is connected to the first auxiliary interface 11 and is used to house a visualization instrument 50 for observing the interior of the bag body 10. The end effector assembly 21 is disposed in the inner cavity 102 of the bag body 10 and is connected to the second auxiliary interface 12. The end effector assembly 21 can be driven to perform grasping and releasing actions to assist in clamping tumors within the bag body 10. In this embodiment, the visualization instrument 50 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 operational field of view. The end effector assembly 21 is a clamping mechanism that can assist in grasping tumors during the retrieval operation, facilitating the doctor's fragmentation of the tumor.

[0033] 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.

[0034] To prevent tumor tissue fluid from contaminating the opening of the bag 10 and thus other tissues during the removal of the visualization instrument 50 and the end effector assembly 21, the retrieval bag of this invention includes two auxiliary interfaces for connecting the visualization instrument channel structure 111 and the end effector assembly 21, respectively. The visualization instrument 50 is inserted into the visualization instrument channel structure 111 for observation and never enters the inner cavity 102 during the entire operation, thus avoiding contamination with the tumor tissue fluid in the inner cavity 102. The end effector assembly 21 is fixed inside the bag body 10 of the retrieval bag, eliminating the need to remove it from the bag body 10 at the end of the surgery, thereby solving the problem of contamination of the bag opening and subsequent contamination of other tissues when the end effector assembly 21 is removed. Therefore, the retrieval bag of this invention not only adapts to various auxiliary instruments, improving ease of use, but also avoids the problem of tumor tissue fluid contaminating other tissues due to the entry and exit of various instruments from the retrieval bag. Furthermore, at the first auxiliary interface 11, the visualization instrument channel structure is sealed to the first auxiliary interface, so that the first auxiliary interface 11 remains sealed to isolate the inner cavity 102 of the bag body 10 from the outer side of the bag body 10; at the second auxiliary interface 12, the second auxiliary interface 12 also remains sealed to isolate the inner cavity 102 of the bag body 10 from the outer side of the bag body 10, further ensuring that the tumor tissue fluid will not leak out from the two auxiliary interfaces.

[0035] like Figures 1 to 3 As shown, the visualization instrument channel structure 111 is sealed to the first auxiliary interface 11 so that the outside of the first auxiliary 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 first auxiliary interface 11 and forms a fluoroscopic channel, which separates the fluoroscopic channel from the inner cavity 102.

[0036] like Figure 3 As shown, the first auxiliary interface 11 includes a first inner hole 114, which penetrates the first auxiliary interface 11 and communicates with the inner cavity 102 of the bag body 10. The first inner hole 114 also communicates with the outer side of the bag body 10. The visualization instrument channel structure 111 is at least partially disposed in the first inner hole 114 and 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 first auxiliary interface 11. This can be achieved by means of adhesive bonding or other methods to fix the two relatively and form a seal. The connection between the visualization instrument channel structure 111 and the first auxiliary 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 first auxiliary interface 11 and form a seal for the first auxiliary interface 11.

[0037] Specifically, 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 102 of the bag body 10, forming a closed viewing channel relative to the inner cavity 102 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 inner cavity 102. The visualization instrument channel structure 111 is located between the inner wall of the first inner hole 114 of the first auxiliary interface 11 and the viewing channel, and also between the inner cavity 102 and the viewing channel, thus separating the viewing channel from the inner cavity 102. 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.

[0038] 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 interior of the lumen 102 through the end of the visualization instrument channel structure. The visualization instrument channel structure 111 may also be entirely made of transparent material.

[0039] 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 first auxiliary 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.

[0040] like Figures 2 to 3 as well as Figures 6 to 7 As shown, the end effector assembly 21 is located in the inner cavity 102 of the bag body 10, the operating assembly 22 is located on the outer side of the bag body 10, and the second auxiliary 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 second auxiliary interface 12. Specifically, the end effector assembly 21 is connected to the second auxiliary interface 12, and one end of the operating assembly 22 is inserted into and detachably connected to the second auxiliary interface 12, thereby realizing the detachable connection between the operating assembly 22 and the end effector assembly 21 through the second auxiliary interface 12. At the second auxiliary interface 12, the second auxiliary interface 12 remains sealed to isolate the inner cavity 102 of the bag body 10 from the outer side of the bag body 10.

[0041] like Figure 2 , Figure 3As shown, the second auxiliary interface 12 includes a positioning member 122, a transmission mechanism, and a second inner hole 124. The positioning member 122 is disposed inside the second inner hole 124, that is, the positioning member 122 is housed within the second inner hole 124. The positioning member 122 is sealed to the second inner hole 124. According to one embodiment, the outer side of the positioning member 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 one end of the positioning member 122 facing the inner cavity 102, and one end of the operating assembly 22 is inserted into the positioning member 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 member 122 and the transmission mechanism. The second inner hole 124 communicates with the inner cavity 102 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 102 of the bag body 10 at the second auxiliary 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.

[0042] like Figures 8 to 10 As 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.

[0043] 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.

[0044] like Figure 9 and Figure 10As 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.

[0045] 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 a 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. Figure 9 and Figure 10 As shown, 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.

[0046] 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, the first linkage 24 and the moving member 23, and the second linkage 26 and the second gripper 212 are rotatably connected via pins and holes. Specifically, the moving member 23 moves, causing the first linkage 24 to move and rotate. The first linkage 24 then moves and rotates the second linkage 26. The second linkage 26 then rotates the second gripper 212 relative to the first gripper 211, thus achieving the gripping and releasing function of the end effector assembly 21. The moving member 23 moves along the direction toward the inner cavity 102 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 second gripper 212 and the first gripper 211, thus releasing the end effector assembly 21. The moving part 23 moves along the inner cavity 102 away from the bag body 10, driving the second gripper 212 along the first link 24 and the second link 26. Figure 7As 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 102 of the bag body 10.

[0047] like Figure 10 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 10 from the inner cavity 102 of the bag body 10, 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 is provided with 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.

[0048] As can be seen, the second auxiliary interface 12 achieves the sealing and isolation between the inner cavity 102 and the outer side of the bag 10, further preventing the tumor tissue fluid in the inner cavity 102 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 second auxiliary interface 12, the inner cavity 102 of the bag 10 is isolated from the outer side of the bag 10.

[0049] 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.

[0050] 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.

[0051] 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.

[0052] like Figure 8 and Figure 11 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.

[0053] Specifically, such as Figure 9 As shown, the second auxiliary interface 12 includes a positioning member 122, and one end of the outer sleeve 221 is inserted into the positioning member 122 and threadedly connected to it. 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. The moving lever 222 moves to drive the moving member 23 to move. More specifically, one end of the outer sleeve 221 is inserted into the positioning member 122 and threadedly connected to it, and at least a portion of the moving member 23 is movably disposed within the positioning member 122.

[0054] like Figure 9 , Figure 10 as well as Figure 12 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.

[0055] like Figure 8 As shown, 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 causes the operating lever 222 to move relative to the outer sleeve 221.

[0056] 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.

[0057] like Figure 13As 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.

[0058] In this invention, before using the clamping mechanism, the operating component 22 on the outside of the bag body 10 must first be assembled with the end effector component 21 located in the inner cavity 102 of the bag body 10. Specifically, during assembly, the operating rod 222 is inserted into the positioning member 122, and the operating part 226 of the operating rod 222 is rotated to drive the operating rod to rotate and be threadedly connected to the moving member 23. The outer tube 221 is inserted into the positioning member 122, and the outer tube 221 is rotated by rotating the knob 40 and is 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 second auxiliary 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. Since the positioning element 122 is connected to the second inner hole 124, the operator holds the second auxiliary interface 12, specifically the outer wall of the second inner hole 124, to keep the positioning element 122 stationary. For example, another clamp can be inserted into the abdominal cavity to clamp the second auxiliary interface 12, specifically the outer wall of the second inner hole 124, 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 rod 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.

[0059] like Figures 1 to 3 as well as Figure 5 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 outward from the bag wall 101 and has an open 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 1 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 5 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.

[0060] like Figure 2 and Figure 4 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.

[0061] like Figure 4 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 102 or expel gas from the inner cavity 102. 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 102 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.

[0062] To facilitate understanding of the structure and usage of the retrieval bag of this invention, Figure 2The diagram illustrates the left and right positions of the main pocket opening 13, the first auxiliary interface 11, and the second auxiliary interface 12 during surgery, demonstrating how the retrieval bag is used. The main pocket opening 13 is located between the second auxiliary interface 12 and the first auxiliary interface 11. The second auxiliary interface 12 is located to the right of the main pocket opening 13, and the first auxiliary interface 11 is located to the left of the main pocket opening 13. Specifically: 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 closing 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 second auxiliary interface 12 and through the second auxiliary interface 12. The auxiliary 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 102 of the bag body 10 is filled. Then, the rotary cutter cuts the fibroid in the inner cavity 102. 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 fibroid resection is completed, the operating component 22 is separated from the second auxiliary 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 the present invention needs to be pulled out of the body during the operation. Since the visualization instrument 50 is not contaminated after the fibroid resection, the visualization instrument 50 will not contaminate the first auxiliary interface 11 or other tissues and organs when it is withdrawn. In addition, 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 second auxiliary interface 12, the operating component, or other tissues and organs, thus solving the problem of easy spread and implantation during surgery.

[0063] In summary, in this embodiment, the retrieval bag can use various auxiliary instruments, such as endoscopes and clamps, and all instrument interfaces remain sealed during use without needing to be pulled out of the body. This improves the convenience of using the retrieval bag while avoiding secondary contamination of other tissues and organs. The visualization instrument channel structure 111 is connected to the first auxiliary interface 11, and the visualization instrument 50 is inserted into the visualization instrument channel structure 111 for observation. The visualization instrument 50 does not come into contact with tumor tissue fluid, so it does not contaminate other tissues when it is removed. The end effector assembly 21 is connected to the second auxiliary interface 12 and is located inside the bag body 10. It does not need to be removed from the inner cavity 102 of the retrieval bag at the end of the operation, avoiding the problem of tumor tissue fluid contaminating other tissues when the end effector assembly 21 is removed. Therefore, the retrieval bag of the present invention can adapt to various auxiliary instruments, improving the convenience of use, while also avoiding the problem of tumor seeding and spread caused by various instruments entering and leaving the retrieval bag.

[0064] The first auxiliary interface 11, the second auxiliary interface 12, and the main pocket opening 13 all extend outward relative to the inner cavity 102 of the bag body 10, which facilitates the alignment and connection of auxiliary instruments with the corresponding auxiliary interfaces, and also makes it easier to close the main pocket opening 13 with sutures, making the surgical operation more convenient and simple.

[0065] 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.

[0066] 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 retrieval bag, characterized in that, The retrieval bag includes: The bag body (10) includes a bag wall (101), an inner cavity (102), a first auxiliary interface (11) and a second auxiliary interface (12), wherein the first auxiliary interface (11) and the second auxiliary interface (12) are both disposed on the bag wall (101). A visualization instrument channel structure (111) is connected to the first auxiliary interface (11). The visualization instrument channel structure (111) forms a channel that closes the inner cavity (102) of the bag body (10). The channel is used to accommodate a visualization instrument (50) to observe the inner cavity (102) of the bag body (10). An end effector assembly (21) is disposed in the inner cavity (102) of the bag body (10) and connected to the second auxiliary interface (12), and the end effector assembly (21) is driven to perform gripping and releasing actions; The second auxiliary interface (12) includes a positioning element (122) and a second inner hole (124) formed by the bag wall (101); the second inner hole (124) communicates with both the inner cavity (102) and the outer side of the bag body (10), and the positioning element (122) is sealed to the second inner hole (124); the end effector assembly (21) is connected to the positioning element (122); The second auxiliary interface (12) further includes a movable part (23), which is movably disposed within the positioning part (122), and a seal is provided between the movable part (23) and the positioning part (122); the end effector assembly (21) is drivably connected to the movable part (23).

2. The retrieval bag according to claim 1, characterized in that, At the second auxiliary interface (12), the second auxiliary interface (12) isolates the inner cavity (102) of the bag body (10) from the outer side of the bag body (10).

3. The retrieval bag according to claim 1, characterized in that, The visualization instrument channel structure (111) is sealed to the first auxiliary interface (11).

4. The retrieval bag according to claim 3, characterized in that, The first auxiliary interface (11) includes a first inner hole (114), which is connected to both the inner cavity (102) and the outer side of the bag body (10). The visualization instrument channel structure (111) is at least partially disposed in the first inner hole (114) and is sealed to the first inner hole (114).

5. The retrieval bag according to claim 1, characterized in that, The visualization device channel structure (111) includes one end facing the inner cavity (102), the one end being a closed structure, forming a channel that closes the inner cavity (102) of the bag body (10).

6. The retrieval bag according to claim 1, characterized in that, The bag (10) includes a main opening (13) through which tumor tissue is inserted into the inner cavity (102) of the bag (10).

7. The retrieval bag according to claim 6, characterized in that, The retrieval bag also includes: A sealing assembly operably mounted on the main bag opening (13), wherein the sealing assembly includes a positioning hole (141) for positioning and mounting a rotary cutter.

8. The retrieval bag according to claim 7, characterized in that, The bag (10) has an inflated state and an uninflated state. The sealing assembly is provided with a vent (142), which is connected to the inner cavity (102) to inflate the inner cavity (102) or to discharge the gas in the inner cavity (102) through the vent (142).

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