CN116407169A - Retrieval bag - Google Patents

Abstract

The invention discloses a retrieval bag, which is used for surgical operations. The retrieval bag includes: a bag body, the bag body has 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 clamping mechanism includes an end effector assembly and an operation assembly, the end effector assembly is arranged in the inner cavity of the bag body, the operation assembly is located outside the bag body, and the operation assembly is detachably connected to the end effector assembly through an auxiliary instrument interface. The retrieval bag of the present invention solves the problem of tumor spread caused by taking out the part of the clip mechanism in contact with the tumor from the retrieval bag during operation.

Description

Retrieval bag

technical field

The invention relates to the technical field of medical devices, in particular to a retrieval bag.

Background technique

The retrieval bag includes an isolation bag body made of flexible material, and a main pocket opening and some auxiliary pocket openings are opened on the isolation pocket body. The caliber of the main pocket is larger than the caliber of each auxiliary pocket. Auxiliary pockets are used to insert instruments such as visualization instruments and auxiliary clamps.

In a retrieval bag in the prior art, both the main pocket and the auxiliary pocket are open.

In use, at least three trocars are penetrated into the abdominal cavity to create some channels. For ease of description, they are named the first channel, the second channel, and the third channel. The number of channels is related to the number of instruments to be inserted.

Insert visualization instruments into the abdominal cavity through the first channel for later manipulation.

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

Send the retrieval bag into the abdominal cavity from the second channel, insert the clamps into the abdominal cavity from the third channel, and with the assistance of the clamps, put the tumor into the retrieval bag from the main bag opening, and then insert the main bag Tighten the mouth, pull it out of the body from the second passage, and then tighten the first auxiliary pocket and the second auxiliary pocket and pull it out of the body from the first passage and the third passage respectively.

Insert the clamp into the second auxiliary pocket, and insert the rotary cutter from the second channel into the main pocket. With the aid of visualization instruments and forceps, the tumor was fragmented with a rotary cutter. During this process, the clamps are placed in the retrieval bag, which will be contaminated with tumor tissue fluid.

After the rotary cutting is completed, take out the visualization instrument, clamps, and rotary cutter respectively, then tighten the first auxiliary bag and the second auxiliary bag, and then insert them back into the body, and finally pull the retrieval bag as a whole from the second channel However, during the removal process, the interstitial fluid on the clamp will contaminate the opening of the auxiliary bag, which will cause the tissue fluid on the auxiliary pouch to contaminate the inside of the human body during the process of inserting it back into the body, resulting in the risk of tumor spread.

To sum up, the existing clamp mechanism can only be taken out from the retrieval bag during the operation, and during the process of taking out the clamp mechanism, the tumor tissue fluid contaminated on the clamp will contaminate the opening of the auxiliary bag and then contaminate other tissues , brings the risk of spreading planting to the operation.

Contents of the invention

Aiming at the deficiencies of the prior art, the present invention aims to provide an extraction bag, which solves the problem of tumor spreading and planting caused by removing the part of the clamp mechanism that is in contact with the tumor from the extraction bag during surgery.

The present invention is achieved through the following technical solutions: a retrieval bag, which includes: a bag body, the bag body includes a bag wall, an inner cavity and an auxiliary device interface, and the auxiliary device interface is arranged on the bag wall; a clamp mechanism, a clamp mechanism It includes an end effector assembly and an operation assembly, the end effector assembly is arranged in the inner cavity of the bag body, the operation assembly is located on the outside of the bag body and the operation assembly is detachably connected to the end effector assembly through the auxiliary instrument interface; in response to the operation assembly Actuation, the auxiliary instrument interface actuates the end effector assembly to perform grasping and releasing motions.

Further, the operation assembly is detachably connected to the auxiliary instrument interface, and the end effector assembly is connected to the auxiliary instrument interface.

Further, the auxiliary instrument interface includes a positioning part, and the end effector assembly is connected with the positioning part.

Further, the auxiliary instrument interface includes an inner hole, and the positioning member is sealingly connected with the inner hole.

Further, the auxiliary device interface further includes an inner hole formed by the bag wall and communicated with the inner cavity, and the locating member is accommodated in the inner hole and sealedly connected with the inner hole.

Further, the auxiliary instrument interface includes a moving part, and at least a part of the moving part is movably arranged in the positioning part.

Further, the end effector assembly includes: a first jaw, the first jaw is connected with the positioning member; a second jaw, the second jaw is rotatably connected with the first jaw and is drivably connected with the moving member; , wherein the moving part moves to drive the second jaw to rotate relative to the first jaw to perform grabbing and releasing actions.

Further, the moving part is drivably connected to the second jaw through a link assembly.

Further, the connecting rod assembly includes a first connecting rod and a second connecting rod pivotally connected in sequence, wherein the first connecting rod is rotatably connected to the moving member; the second connecting rod is rotatably connected to the second jaw, When the moving part moves, the swing directions of the first connecting rod and the second connecting rod are opposite.

Further, a seal is provided between the moving part and the positioning part.

Further, the operating assembly includes: a handle assembly and a shaft assembly, the distal end of the shaft assembly is detachably connected to the end effector assembly, when the shaft assembly is connected to the end effector assembly, the handle assembly can be operated to drive the end Actuator components perform corresponding actions.

Further, the operating assembly includes a handle assembly and a shaft assembly, the handle assembly is drivably connected to the proximal end of the shaft assembly; the distal end of the shaft assembly is detachably connected to the auxiliary instrument interface, and the end effector assembly is connected to the auxiliary instrument interface Connection; in response to manipulation of the handle assembly, the shaft assembly drives the end effector assembly through the auxiliary instrument interface to perform grabbing and releasing actions.

Further, the shaft assembly includes an outer sleeve and an operating rod located in the outer sleeve and movable relative to the outer sleeve.

Further, the auxiliary instrument interface includes a positioning part, and the distal end of the outer sleeve is detachably connected to the positioning part.

Further, the positioning member is connected with the outer sleeve through threads.

Further, the auxiliary instrument interface further includes a moving part, at least a part of the moving part is movably disposed in the positioning part, the moving part is drivably connected to the end effector assembly, and the operating rod is detachably connected to the moving part.

Further, the operating rod is threadedly connected with the moving part.

Further, the handle assembly also includes: a fixed handle, which is fixedly connected to an end of the outer sleeve away from the end effector assembly; a movable handle, which is connected to an end of the operating rod away from the end effector assembly; wherein, the movable handle It is rotatably connected with the fixed handle so that the operating rod can move relative to the outer tube by driving the movable handle to rotate relative to the fixed handle.

Further, the auxiliary instrument interface includes a positioning part and a moving part, and the moving part is movably arranged relative to the positioning part; the operation assembly is detachably connected to the positioning part and the moving part, the positioning part is connected to the end effector assembly, and the moving part It is drivably connected with the end effector assembly; in response to the actuation of the operating assembly, the movable member moves to drive the end effector assembly to perform grabbing and releasing actions.

Further, the operation assembly includes a shaft assembly, the shaft assembly includes an outer sleeve and an operating rod located in the outer sleeve and movable relative to the outer sleeve; the outer sleeve is detachably connected to the positioning member, and the operating rod is detachably connected to the moving member.

Further, the detachable connections are threaded connections.

Further, the end effector assembly includes a first jaw and a second jaw rotatably connected to the first jaw; the first jaw is connected to the positioning member, and the moving member is drivably connected to the second jaw; In response to the actuation of the operating assembly, the moving member moves to drive the rotation of the second jaw to perform a grabbing and releasing action.

Further, the auxiliary instrument interface further includes a link assembly, and the moving part is drivably connected to the second jaw through the link assembly.

Further, the auxiliary instrument interface also includes an inner hole formed by the bag wall, and the positioning member is accommodated in the inner hole and is sealedly connected with the inner hole.

Further, at least a part of the moving part is movably arranged in the positioning part, and a sealing part is provided between at least a part of the moving part and the positioning part.

Further, at the auxiliary device interface, the auxiliary device interface isolates the inner cavity of the bag from the outside of the bag.

Compared with the prior art, the beneficial effect of the present invention lies in that by providing a detachable clamp mechanism, specifically, the end effector assembly is preset in the bag body, and the operation assembly is arranged outside the bag body and realized with the bag body. The detachable connection solves the problem that the end effector assembly needs to be taken out and avoids secondary pollution; at the same time, only the end effector assembly is placed in the bag, and the operating assembly is located outside the bag, which not only reduces the bag body being inserted into the human body When the overall volume is small, the operating components are placed outside the bag and it is convenient for medical personnel to operate.

Description of drawings

Fig. 1 is the schematic diagram of the retrieval bag provided by the present invention;

Fig. 2 is a schematic diagram of the clamp mechanism of the retrieval bag shown in Fig. 1;

Fig. 3 is an exploded view of the retrieval bag shown in Fig. 1;

Fig. 4 is a sectional view of the retrieval bag shown in Fig. 1;

Fig. 5 is a sectional view of the clamp mechanism shown in Fig. 2;

Fig. 6 is a partial enlarged view of place A in Fig. 5;

7 is a cross-sectional view of the end effector assembly of the retrieval bag shown in FIG. 1;

Fig. 8 is a cross-sectional view of the operating assembly of the clamp mechanism shown in Fig. 2;

Fig. 9 is a partial enlarged view of place B in Fig. 8;

Fig. 10 is a partial enlarged view at C in Fig. 8;

Fig. 11 is a perspective view of the retrieval bag of the present invention;

Fig. 12 is a schematic diagram of the main pocket opening of the retrieval bag shown in Fig. 11 in a normal unfolded state;

Fig. 13 is an exploded view of the retrieval bag shown in Fig. 11;

Fig. 14 is a schematic diagram of the connection clamp mechanism and the visualization instrument of the retrieval bag of the present invention;

Fig. 15 is a sectional view of the retrieval bag shown in Fig. 13;

10. Bag body; 101. Bag wall; 102. Inner cavity; 11. Visualized device interface; 111. Visualized device channel structure; 112. First connection part; 114. First inner hole; 12. Auxiliary device interface; 122. Positioning piece; 124, second inner hole; 13, main pocket opening; 14, sealing cover; 141, positioning hole; 142, air vent; 143, protrusion; 15, mounting ring; 153, depression; 21, end effector Component; 211, the first jaw; 212, the second jaw; 22, the operating component; 221, the outer sleeve; 222, the operating rod; 223, the fixed handle; 224, the movable handle; 225, the stopper; 226 Operation 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 , Visualization equipment.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In the present invention, terms such as "connected" and "connected" should be interpreted in a broad sense unless otherwise clearly specified and limited, for example, they can be fixedly connected, detachably connected, or movably connected. , or integrated; it can be directly connected or indirectly connected through an intermediary, it can be the internal communication of two elements or the interaction relationship between two elements such as butting. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations. It should be noted that when there are qualifiers before "connected" and "connected", it has the meaning defined by the corresponding qualifiers, and only the situations that obviously need to be excluded are excluded, and other possible situations are not excluded, such as "detachably connected" Refers to the detachable connection, does not include integrated, but the movable connection is not excluded.

Please refer to FIG. 1 and FIG. 2 , this embodiment provides a retrieval bag for surgical operations, and the retrieval bag includes a bag body 10 and a clamp mechanism. The bag body 10 has a bag wall 101 , an inner cavity 102 and an auxiliary instrument interface 12 , the inner cavity 102 is formed around the bag wall 101 , and the auxiliary instrument interface 12 is arranged on the bag wall. The clamping mechanism is installed in the auxiliary instrument interface 12 to act on the tissue in the bag body 10. The tissue can be a tumor, etc., wherein the clamping mechanism includes a detachably connected end effector assembly 21 and an operating assembly 22. The actuator assembly 21 is arranged in the bag body 10 , the end effector assembly 21 extends towards the inner cavity of the bag body 10 , and the operation assembly 22 is on the outside of the bag body 10 and is used to drive the end effector assembly 21 to perform corresponding actions.

The above-mentioned tumors can be divided into malignant tumors and benign tumors. During the process of shredding or taking out malignant tumors, if the interstitial fluid contaminates other normal tissues, it is very easy for tumor cells to grow and spread, resulting in postoperative tumor recurrence; even Even benign tumors, such as fibroids, also have a certain rate of malignant implantation, so the tumor tissue fluid should be avoided from contaminating other tissues during the operation.

In order to avoid the problem that the end effector assembly 21 may contaminate the auxiliary instrument interface 12 of the bag body 10 or contaminate other human tissues when the end effector assembly 21 is taken out at the end of the operation, a detachable clamp mechanism is provided in the present invention Specifically, the end effector assembly 21 is preset in the bag body 10, and the operation assembly 22 is arranged on the outside of the bag body 10 and detachably connected with the end effector assembly 21 in the bag body 10, so that no The end effector assembly 21 is taken out from the bag body 10, which solves the problem of contamination or infection caused by taking out the end effector assembly 21. At the same time, only the end effector assembly 21 is set in the bag body 10, and the operating assembly 22 is located in the bag body. Outside the body 10, it not only reduces the overall volume of the bag body 10 when it is stuffed into the human body, but also the operation component 22 is placed outside the bag body 10 to facilitate the operation of the medical personnel.

The end effector assembly 21 is located in the inner cavity of the bag body 10, the operation assembly 22 is located outside the bag body 10, the auxiliary instrument interface 12 is arranged on the bag wall of the bag body 10, and the operation assembly 22 is connected to the end effector assembly 21 through the auxiliary instrument interface 12. Removably connected. Specifically, the end effector assembly 21 is connected to the auxiliary instrument interface 12, and one end of the operation assembly 22 is inserted into the auxiliary instrument interface 12 and is detachably connected to the auxiliary instrument interface 12, so that the operation assembly 22 is connected to the terminal through the auxiliary instrument interface 12. The actuator assembly 21 is detachably connected.

Specifically, as shown in FIG. 3 and FIG. 4 , the auxiliary device 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 accommodated in the second inner hole. The positioning member 122 is in sealing connection with the second inner hole 124 . According to one embodiment, the outer side of the positioning member 122 is closely attached to the inner wall of the second inner hole 124 , which may be in the form of bonding or the like. Wherein, the end effector assembly 21 is arranged at one end of the positioning member 122 facing the inner cavity, and one end of the operation assembly 22 is inserted into the positioning member 122 via the outside of the bag body 10 to be drivably connected and detachably connected to the end effector assembly 21 . Specifically, the operation assembly 22 and the end effector assembly 21 are connected through a transmission mechanism. Further, the operation assembly 22 and the end effector assembly 21 are connected through a positioning member 122 and a transmission mechanism. Wherein 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, the second inner hole 124 is sealed, so that the inner cavity of the bag body 10 at the auxiliary device interface 12 is in contact with the second inner hole 124. Not connected externally. In this embodiment, the second inner hole 124 is formed by extending outward from the bag wall 101 and has an open end, which is the opening of the second inner hole 124 .

As shown in conjunction with FIGS. 5 to 7 , the transmission mechanism transmits the driving force of the operating assembly 22 to the end effector assembly 21 . The transmission mechanism includes a moving part 23 and a connecting rod assembly. The moving part 23 is movably arranged in the positioning part 122; connected to drive the end effector assembly 21 to move through the link assembly. The moving part 23 can move along the axial direction of the positioning part 122 on the inner wall of the positioning part 122, and the connecting rod assembly is connected with the moving part 23, thereby converting the linear motion of the moving part 23 into grabbing and releasing of the end effector assembly 21 action. Specifically, the moving part 23 is movably disposed in the inner hole of the positioning part 122 .

The end effector assembly 21 includes a first jaw 211 and a second jaw 212, the first jaw 211 is connected to the positioning member 122; the second jaw 212 is rotatably arranged on the first jaw 211, wherein the connecting rod The assembly is drivably connected to the second jaw 212 to drive the second jaw 212 to rotate relative to the first jaw 211 .

Referring to FIG. 6 and FIG. 7 , this embodiment presents an implementation of the end effector assembly 21 . Specifically, the end effector assembly 21 has two jaws: a first jaw 211 and a second jaw 212 , wherein the first jaw 211 is fixedly connected to the positioning member 122 . In another implementation manner, the first jaw 211 and the positioning member 122 may also be of an integral structure.

The first jaw 211 includes a claw-shaped part that cooperates with the second jaw 212 to realize the function of grabbing and releasing, and also includes a claw-shaped part for fixedly connecting or integrally forming the end of the positioning member 122 facing the inner cavity 102 In the middle part, the claw-shaped part is fixedly connected or integrally formed with the middle part, and the second clamping jaw 212 is rotatably connected with the first clamping jaw 211 through a pin shaft arranged in the middle part. The movement power of the second jaw 212 comes from the transmission mechanism. Specifically, the operating assembly 22 drives the moving part 23 to move, the moving part 23 drives the connecting rod assembly to move, and the connecting rod assembly drives the second clamping jaw 212 to rotate, and the connecting rod assembly will move The linear movement of the member 23 is transformed into the rotational movement of the second jaw 212.

The link assembly includes a first link 24 and a second link 26 pivotally connected in sequence, wherein one end of the first link 24 is rotatably connected to the moving member 23, and the other end is connected to one end of the second link 26. Rotatably connected, the other end of the second connecting rod 26 is fixedly connected with the second jaw 212 , in another embodiment, the other end of the second connecting rod 26 and the second jaw 212 may be in an integral structure. When the moving member 23 moves, the swing directions of the first connecting rod 24 and the second connecting rod 26 are opposite.

There are various configurations of the connecting rod assembly, and a specific implementation is given in this embodiment, using two connecting rods similar to the bicycle chain structure, between the two connecting rods, the first connecting rod 24 and the moving The parts 23 are rotatably connected through the fitting of pin shafts and holes. Specifically, the movement of the moving part 23 drives the first connecting rod 24 to move and rotate, the first connecting rod 24 drives the second connecting rod 26 to move and rotate, and the second connecting rod 26 drives the second jaw 212 to rotate relative to the first jaw 211 The grabbing and releasing functions of the end effector assembly 21 are realized. The moving part 23 moves along the direction towards the inner cavity of the bag body 10, and drives the second jaw 212 to rotate clockwise in FIG. 7 through the first connecting rod 24 and the second connecting rod 26. The space between the first jaws 211 gradually increases to realize the release function of the end effector assembly 21; the moving part 23 moves along the direction away from the inner cavity of the bag body 10, through the first connecting rod 24, the second connecting rod 26 drives the second jaw 212 to rotate in the counterclockwise direction in FIG. The moving part 23 will not break away from the inner hole of the positioning part 122 during the movement, so as to keep the sealing of the moving part 23 to the inner cavity of the bag body 10 .

As shown in Figure 7, a seal 25 is provided between the moving part 23 and the positioning part 122, the seal 25 can separate the outside of the bag from the inner cavity of the bag, and between the operating assembly 22 and the end effector assembly 21 is connected to avoid contamination of the operation component 22, so that the operation component 22 will not bring risks of planting and contamination to normal tissues. Specifically, the sealing member 25 can be a sealing ring, and the outer wall of the moving member 23 is provided with a ring of installation grooves, and the sealing member 25 is arranged in the installation groove and is interference-fitted with the inner wall of the positioning member 122 .

It can be seen that the auxiliary device interface 12 realizes the sealing and isolation of the inner cavity of the bag body 10 and the outer side, further prevents the tumor tissue fluid in the inner cavity from contaminating the normal tissue outside the bag body 10, and improves the effect of preventing tumor spread and planting. That is to say, at the auxiliary instrument interface 12 , the inner cavity 102 of the bag body 10 is isolated from the outside of the bag body 10 .

The operating component 22 in this embodiment is mainly used to cooperate with the end effector component 21 in the bag body 10 to drive the end effector component 21 to grab or release the tumor.

The operating assembly 22 includes: a handle assembly and a shaft assembly, the distal end of the shaft assembly is detachably connected to the end effector assembly. When the shaft assembly is connected with the end effector assembly, the handle assembly can be operated to drive the end effector assembly to perform corresponding actions. The distal end of the shaft assembly refers to the end away from the handle assembly, and the proximal end of the shaft assembly refers to the end close to the handle assembly.

In this embodiment, a handle assembly is provided to facilitate the doctor to control the action of the end effector assembly through the handle assembly during the operation, while the shaft assembly is used to transmit the power of the handle assembly to the end effector, and the handle assembly adopts a scissors handle-like structure , easy for doctors to operate.

As shown in FIGS. 7 to 10 , according to an embodiment of the operating assembly 22 , the shaft assembly includes an outer sleeve 221 detachably connected to the positioning member 122 and an operating rod 222 detachably connected to the moving member 23 . The operating rod 222 is movably inserted into the outer sleeve 221 , and one end of the outer sleeve 221 is detachably connected to the positioning member 122 . And one end of the operating rod 222 protrudes from the outer sleeve 221 and is detachably connected with the end effector assembly 21 .

Specifically, the auxiliary instrument interface 12 includes a positioning piece 122 , and one end of the outer sleeve 221 is inserted into the positioning piece 122 and is threadedly connected with the positioning piece 122 . The transmission mechanism includes a moving part 23, at least a part of which is movably arranged in the positioning part 122, and the moving part 23 moves to drive the movement of the end effector assembly 21, wherein the operating rod 222 is threadedly connected with the moving part 23 to operate The rod 222 is detachably connected to the end effector assembly 21 through the moving part 23 , and the operating rod 222 moves to drive the moving part 23 to move. More specifically, one end of the outer sleeve 221 is inserted into the positioning member 122 and screwed to the positioning member 122 , and at least a part of the moving member 23 is movably disposed in the positioning member 122 .

As shown in Figures 9 and 10, the length of the operating rod 222 is greater than the length of the outer sleeve 221, so that the two ends of the operating rod 222 extend out of the outer sleeve 221 respectively, and the outer sleeve 221 and the end of the operating rod 222 away from the handle assembly are all provided. There is an external thread, wherein one end of the operating rod 222 protrudes and is threadedly connected with the moving part 23, the other end of the operating rod 222 protrudes and is connected with the handle assembly, and the end of the end of the operating rod 222 connected with the handle assembly is provided with a stopper Section 225.

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 rod 222 away from the end effector assembly 21 . Wherein, the movable handle 224 is rotatably connected with the fixed handle 223 , so that the operating rod 222 moves relative to the outer sleeve 221 by driving the movable handle 224 to rotate relative to the fixed handle 223 .

As shown in Fig. 5 and Fig. 10, wherein, the fixed handle 223 and the movable handle 224 are rotatably connected by pin shafts, and a spring is arranged between the fixed handle 223 and the movable handle 224, and the fixed handle 223 and the movable handle 224 One end away from the outer sleeve 221 is respectively provided with an operation hole convenient for the operator to hold. The fixed handle 223 is rotatably connected to the proximal end of the outer sleeve 221 through the knob 40. The movable handle 224 and the operating rod 222 extend to the proximal side. connected, by driving the movable handle 224 to rotate to move the operating rod 222 along the longitudinal axis of the outer casing 221 , and then drive the moving part 23 to move along the longitudinal axis of the positioning part 122 .

As shown in FIG. 10 , one end of the knob 40 is connected to the outer casing 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, and the fixing method may be screw fixing or other methods known to those skilled in the art. The end of the knob 40 close to the handle assembly includes a connecting protrusion 42, and the fixed handle 223 Including the circumferential circumferential groove 227, the connecting protrusion 42 and the circumferential circumferential groove 227 form fit, so that the knob 40 and the fixed handle form a fixed connection in the longitudinal direction of the outer sleeve 221, and the knob 40 can be fixed relative to the fixed handle 223. The longitudinal axis of the sleeve 221 rotates 360 degrees along the central axis, and the outer sleeve 221 is driven to rotate by the knob 40 . The operating rod 222 also includes a stop part 225 and an operating part 226, wherein the stop part 225 is spherical, the operating rod 222 runs through the movable handle 224, and the stop part 225 is located inside the movable handle 224, so that the operating rod 222 is in contact with the movable handle. The handle 224 forms a fixed connection in the direction of the longitudinal axis of the operating rod 222, and the operating rod 222 can rotate 360 degrees relative to the movable handle 224 with the longitudinal axis of the operating rod 222 as the central axis, and the operating part 226 can drive the operating rod. 222 rotates, and the movable handle 224 can drive the operating rod 222 to move along the longitudinal axis of the outer sleeve 221 .

In the present invention, before using the clamp mechanism, the operation assembly 22 on the outside of the bag body must be assembled with the end effector assembly 21 located in the inner cavity of the bag body. 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 with the moving part 23. 40, drive the outer sleeve 221 to rotate and threadedly connect with the positioning member 122, and complete the detachable connection of the operating assembly 22 with the end effector assembly 21 through the auxiliary instrument interface 12. As for the first connection of the outer sleeve 221 or the first connection of the operating rod 222, there is no The order is fixed, and the operator can choose it according to the usage habits. Since the positioning piece 122 is connected with 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 piece 122 still, for example, another pair of clamps can be inserted into the abdominal cavity to clamp The auxiliary instrument interface 12 specifically clamps the outer wall of the second inner hole to keep it stable, so that when the outer sleeve 221 is screwed into the positioning piece 122, the positioning piece 122 will not follow the rotation; the moving piece 23 is connected with the end effector assembly 21, The end effector assembly 21 is connected with the positioning member 122 , so when the operating rod 222 is screwed in, the moving member 23 will not follow its relative positioning member 122 to rotate. More specifically, the inner wall of the positioning member 122 includes a first section of the inner wall and a second section of the inner wall, and the first section of the inner wall is closer to the outside of the bag body 10 than the second section of the inner wall. The inner wall of the first section is provided with an internal thread, and the outer wall of the outer sleeve 221 is provided with an external thread, and the internal thread of the inner wall of the first section cooperates with the external thread of the outer sleeve 221 to realize the screw connection between the positioning member 122 and the outer sleeve 221; 23 is accommodated in the second section of the inner wall of the positioning part 122, the inner hole of the moving part 23 is provided with an internal thread, and the distal end of the operating rod 222 is provided with an external thread, and the internal thread of the moving part 23 is connected to the external thread of the operating rod 222 Cooperate to realize the screw connection between the moving part 23 and the operating rod 222 . The distal end of the operating rod 222 refers to the end away from the handle assembly. When in use, the movable handle 224 is driven to rotate relative to the fixed handle 223, and the rotation of the movable handle 224 drives the operating rod 222 to slide relative to the outer sleeve 221, and then drives the moving part 23 to slide, and drives the second jaw 212 to move relative to the first clamping jaw 212 through the connecting rod assembly. Jaws 211 rotate to open or close end effector assembly 21 .

As shown in FIG. 3 and FIG. 4 , in one embodiment, the bag body 10 of the retrieval bag includes a visualization instrument interface 11 , and the visualization instrument interface 11 is arranged 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 the visualization instrument 50 to observe the inside of the bag body 10. In this embodiment, the visualization instrument is an endoscope. The endoscope can extend into the visualization instrument channel structure 111 to observe the inside of the bag body 10 and provide the doctor with an operating field of view.

The visualization instrument channel structure 111 is sealingly connected with the visualization instrument interface 11 , so that the outside of the visualization instrument interface 11 does not communicate with the inner cavity 102 . Optionally, the sealing connection adopts an adhesive method. The visualization instrument channel structure 111 is connected to the visualization instrument interface 11 and forms a perspective channel, and the visualization instrument channel structure 111 separates the perspective channel from the inner cavity.

As shown in Figure 3, the visualization instrument interface 11 includes a first inner hole 114, wherein the first inner hole 114 runs through the visualization instrument interface 11 and communicates with the inner cavity 102 of the bag body 10, and the visualization instrument channel structure 111 is sealed with the first inner hole 114 connect. The visualization instrument channel structure 111 includes a first connection part 112, and the first connection part 112 is closely attached to the visualization instrument interface 11, and the two can be relatively fixed and sealed by means of bonding or the like. The connection between the visualization instrument channel structure 111 and the visualization instrument interface 11 may also be other technical means known to those skilled in the art, as long as the connection can realize the relative fixation between the visualization instrument channel structure 111 and the visualization instrument interface 11, and A seal is formed on the visualization instrument interface 11 .

Specifically, as shown in Figures 11 to 15, the visualization instrument channel structure 111 is a cylindrical structure with one end open and the other end closed, and the closed end is placed toward the inner cavity of the bag body 10, and the visualization instrument 50 passes through the visualization instrument channel structure. The opening of 111 is inserted into the visualization instrument channel structure 111 to be able to observe the situation in the lumen. 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 see-through channel and between the lumen 102 and the see-through channel, thus separating the see-through channel and the lumen. According to another embodiment, the visualization instrument channel structure 111 is integrated with the bag wall 101 , that is, the visualization instrument channel structure 111 is formed by extending from the bag wall 101 to the inner cavity 102 and the extension end is closed.

At least part of the visualization instrument channel structure 111 is made of transparent material, so as to facilitate the endoscope to enter the perspective channel and see the situation in the lumen through the end of the visualization instrument channel structure. The visible instrument channel structure 111 can also be entirely made of transparent materials.

The visualization instrument 50, such as an endoscope, extends into the visualization instrument channel structure 111 to observe the inner cavity 102, and the visualization instrument channel structure 111 is closed relative to the inner cavity 102 and does not communicate with the inner cavity 102, so during the entire operation process The visualization instrument 50 will not come into contact with the tumor tissue fluid in the lumen 102, and the visualization instrument interface 11 and the visualization instrument channel structure 111 are always in a sealed state, thus avoiding the risk of tumor implantation and spread caused by the use of the visualization instrument.

As shown in FIG. 11 and FIG. 12 , the bag body 10 also includes a main pocket opening 13 through which the tissue to be rotary cut is placed into the bag body 10 . In one embodiment, the main pocket 13 is formed by the upward extension of the pocket wall 101 and has an open end. The tissue to be rotary cut is placed into the bag body 10 through the main pocket 13, and various medical instruments and rotary cutters are also It can be inserted into the bag body 10 through the main bag opening 13 for operation. The state when the main pocket 13 shown in Figure 11 is pulled out of the body via the trocar channel, because the bag body 10 is flexible, so the main pocket 13 adapts to the shape of the trocar channel at this moment; The main pocket 13 is in a normal unfolded state. It can be seen that the main pocket 13 should have a size large enough to allow the tissue to be rotary-cut to be placed in the bag body 10 via the main pocket 13. Regarding the retrieval bag of the present invention The usage method will be described in detail later.

As shown in FIG. 4 and FIG. 13 , the retrieval bag further includes a sealing assembly, which includes a sealing cover 14 and a mounting ring 15 , and the sealing assembly is operably installed on the main bag opening 13 . Wherein the sealing cover 14 and the mounting ring 15 both have certain elasticity, for example, they can be made of rubber. The inner side of the sealing cover 14 includes a circle of protrusions 143 extending circumferentially along the sealing cover 14, the outer side of the mounting ring 15 comprises a circle of depressions 153 extending circumferentially along the mounting ring 15, the protrusions 143 on the sealing cover and the mounting ring The recesses 153 are tightly locked together by form fit, so that the sealing cover 14 and the mounting ring 15 are relatively fixed and sealed. During installation, the bag body 10 on the top of the main pocket opening 13 is pulled out from the inside of the installation ring 15. At this time, the installation ring 15 is sleeved on the outside of the upper bag body 10, and then the bag body 10 is folded down on the side of the installation ring 15. On the outside, the sealing cover 14 is clamped on the outside of the installation ring 15 and clamps the bag body 10 folded on the outside of the installation ring 15 .

As shown in FIG. 4 and FIG. 13 , the sealing cover 14 is also provided with a positioning hole 141 for positioning and installing the rotary cutter. The diameter of the positioning hole 141 is small and has a certain degree of elasticity, so when the rotary cutter is inserted into the positioning hole 141, the positioning hole 141 will form a seal 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 uninflated state, wherein the sealing cover 14 further includes a vent 142 , and the vent 142 communicates with the inner cavity 102 to inflate the inner cavity or discharge the gas in the inner cavity through the vent 142 . The Luer valve 30 is operably installed on the air vent 142 . Open the Luer valve 30 to inflate the inner cavity of the bag body 10 through the air vent 142 . Close the Luer valve to maintain the airtightness of the air vent 142 . The Luer valve is a conventional valve well known to those skilled in the art, and the related structures will not be repeated here.

In order to facilitate the understanding of the structure and use of the retrieval bag of the present invention, the use of the retrieval bag during the operation is introduced with the left and right positions of the main pocket opening 13, the auxiliary instrument interface 12 and the visualization instrument interface 11 shown in Figure 4 , wherein the main pocket 13 is located between the auxiliary instrument interface 12 and the visualization instrument interface 11, the auxiliary instrument interface 12 is located on the right side of the main pocket 13, and the visualization instrument interface 11 is located on the left side of the main pocket 13, specifically:

When the tumor dissection is completed, for example, three puncture devices are inserted into the abdominal cavity to form three channels. The three channels are the first channel, the second channel, and the third channel in turn. First, the object feeder is inserted into the abdominal cavity through the first channel. Then put the retrieval bag into the human body through the object feeder and unfold it, insert an endoscope through the second channel for auxiliary observation, insert a clamp into the third channel to put the tumor into the bag body 10 through the main bag opening 13, and then Pull out the material feeder, pull the closing line of the main pocket 13 out of the body, take out the clamp in the third channel; insert a clamp from the first channel through the main pocket 13, and then drive the end effector assembly One end of the operation assembly 22 of 21 is inserted through the third passage, with the assistance of the clamp in the first passage, the operation assembly 22 is inserted into the auxiliary instrument interface 12 and establishes a connection with the end effector assembly 21 through the auxiliary instrument interface 12, and then the The front end of the endoscope in the second channel extends into the visualization instrument channel structure 111; take out the clamps in the first channel, tighten the main pocket 13 with a closing line, and pull the main pocket 13 out of the body; install the ring 15 Put it on the outside of the main pocket 13 and fold the main pocket 13 after unfolding, cover the sealing cover 14 on the installation ring 15; insert the rotary cutter into the positioning hole 141 of the sealing cover 14, and install the Luer on the vent 142 Valve 30, open the Luer valve 30 to inflate the bag body 10, so that the inner cavity of the bag body 10 is filled, and then the rotary cutter performs rotary cutting on the tumor in the inner cavity. During the rotary cutting process, the end effector assembly 21 assists The tissue is clamped so that the rotary cutter can chop it up, and the endoscope can observe the chopping situation in real time. After the rotary cutting is completed, the operating assembly 22 is separated from the auxiliary instrument interface 12 so as to be separated from the end effector assembly 21 and pulled out of the body, the endoscope is pulled out from the visualization instrument channel structure 111 and pulled out of the body, and finally the retrieval bag Take out the human body. During the whole operation process, only the main pocket 13 of the extraction bag of the present invention needs to be pulled out of the body during the operation. Since the visualization instrument 50 is not polluted after the tumor is rotated, the visualization instrument 50 will not be polluted when it is pulled out. The instrument interface 11 and other tissues and organs can be visualized. The end effector assembly 21 itself is set in the bag body 10 and does not need to be pulled out, so it will not pollute the auxiliary instrument interface 12, operating components and other tissues and organs, and solves the problem of easy diffusion and planting during the operation. question.

To sum up, in this embodiment, by setting a split clamp mechanism, the end effector assembly is located in the bag body, the operation assembly is located outside the bag body and is detachably connected to the end effector assembly through the auxiliary instrument interface, and the end effector assembly is realized. The goal is that the end effector assembly does not need to be pulled out at the end of the operation, thus solving the problem in the prior art that the end effector assembly is pulled out after the tumor is rotary cut and the bag body contaminates the interface of the auxiliary device or other tissues, causing the tumor to grow and spread. Effect.

It should be understood that although this description is described according to implementation modes, not each implementation mode only contains an independent technical solution, and this description in the description is only for clarity, and those skilled in the art should take the description as a whole, and each The technical solutions in the embodiments can also be properly combined to form other embodiments that can be understood by those skilled in the art.

The series of detailed descriptions listed above are only specific descriptions for feasible implementations of the present invention, and they are not intended to limit the protection scope of the present invention. Any equivalent implementation or implementation that does not depart from the technical spirit of the present invention All changes should be included within the protection scope of the present invention.

Claims (24)

1. A bag for taking out objects, characterized in that the bag for taking out objects comprises:

the bag body (10), the bag body (10) comprises a bag wall (101), an inner cavity (102) and an auxiliary instrument interface (12), and the auxiliary instrument interface (12) is arranged on the bag wall (101);

a clamping mechanism comprising an end effector assembly (21) and an operating assembly (22), the end effector assembly (21) being disposed in the interior cavity (102) of the pouch (10), the operating assembly (22) being located outside the pouch (10) and the operating assembly (22) being detachably connected to the end effector assembly (21) through the auxiliary instrument interface (12); in response to actuation of the operating assembly (22), the auxiliary instrument interface (12) drives the end effector assembly (21) to perform grasping and releasing actions.

2. The bag of claim 1, wherein the operating assembly (22) is detachably connected to the auxiliary instrument interface (12), and wherein the end effector assembly (21) is connected to the auxiliary instrument interface (12).

3. The bag of claim 1 or 2, wherein the auxiliary instrument interface (12) comprises a positioning member (122), the end effector assembly (21) being connected to the positioning member (122).

4. A bag according to claim 3, wherein the auxiliary instrument interface (12) further comprises a second bore (124) formed by the bag wall (101) in communication with the cavity, the positioning member (122) being received within the second bore (124) and being in sealing connection with the second bore (124).

5. A bag according to claim 3, wherein the auxiliary instrument interface (12) further comprises:

-a moving member (23), at least a portion of the moving member (23) being movably arranged within the positioning member (122).

6. The bag of claim 5, wherein the end effector assembly (21) comprises:

-a first jaw (211), said first jaw (211) being connected to said positioning member (122);

-a second jaw (212), said second jaw (212) being rotatably connected with said first jaw (211) and being drivably connected with said moving member (23), wherein said moving member (23) moves to drive said second jaw (212) to rotate relative to said first jaw (211) to perform a gripping and releasing action.

7. Bag according to claim 6, characterized in that the displacement member (23) is drivingly connected to the second jaw by means of a linkage assembly.

8. The bag of claim 7 wherein the linkage assembly comprises a first linkage (24) and a second linkage (26) pivotally connected in sequence, wherein,

the first connecting rod (24) is rotatably connected with the moving piece (23);

the second connecting rod (26) is fixedly connected with the second clamping jaw (212); when the moving member (23) moves, the swinging directions of the first connecting rod (24) and the second connecting rod (26) are opposite.

9. The bag of claim 5, wherein a seal is provided between the moving member (23) and the positioning member (122).

10. The bag of claim 1, wherein the operating assembly (22) comprises:

a handle assembly and a shaft assembly, the handle assembly being drivably connected to a proximal end of the shaft assembly; the distal end of the shaft assembly is detachably connected with the auxiliary instrument interface (12), and the end effector assembly (21) is connected with the auxiliary instrument interface (12); in response to the handle assembly being operated, the shaft assembly drives the end effector assembly through an auxiliary instrument interface (12) to perform grasping and releasing actions.

11. The bag of claim 10 wherein the shaft assembly comprises an outer sleeve (221) and a lever (222) located within and movable relative to the outer sleeve.

12. The bag of claim 11, wherein the auxiliary instrument interface (12) comprises a positioning member (122), the distal end of the outer sleeve (221) being detachably connected to the positioning member (122).

13. The bag of claim 12, wherein the positioning member (122) is threadably connected to the outer sleeve (221).

14. The bag of claim 12, wherein the accessory interface further comprises:

-a moving member (23), at least a portion of the moving member (23) being movably arranged within the positioning member (122), the moving member (23) being drivably connected to the end effector assembly (21), the operating lever (222) being detachably connected to the moving member (23).

15. The bag of claim 14, wherein the lever (222) is threaded with the runner (23).

16. The bag of claim 11, wherein the handle assembly comprises:

a fixed handle (223), the fixed handle (223) being connected to the proximal end of the outer cannula (221);

a movable handle (224), the movable handle (224) being connected to the proximal end of the lever (222);

wherein the movable handle (224) is rotatably connected with the fixed handle (223) so as to enable the operation rod (222) to move relative to the outer sleeve (221) by driving the movable handle (224) to rotate relative to the fixed handle (223).

17. The bag according to claim 1 or 2, characterized in that the auxiliary instrument interface (12) comprises a positioning member (122) and a moving member (23), the moving member (23) being movably arranged with respect to the positioning member (122); the operating assembly (22) is detachably connected with the positioning piece (122) and the moving piece (23), the positioning piece (122) is connected with the end effector assembly (21), and the moving piece (23) is in driving connection with the end effector assembly (21); in response to actuation of the operating assembly (22), the mover (23) moves to actuate the end effector assembly (21) to perform a grasping and releasing action.

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

19. The bag of claim 18, wherein the removable connections are threaded connections.

20. The bag of claim 17, wherein the end effector assembly (21) comprises a first jaw (211) and a second jaw (212) rotatably connected to the first jaw (211); -said first jaw (211) being connected to said positioning member (122), said moving member (23) being drivably connected to said second jaw (212); in response to actuation of the operating assembly (22), the mover (23) moves to drive rotation of the second jaw (212) to perform gripping and releasing actions.

21. The bag of claim 20, wherein the auxiliary instrument interface (12) further comprises a linkage assembly, the mover (23) being drivably connected with the second jaw (212) by the linkage assembly.

22. The bag of claim 17, wherein the accessory interface (12) further comprises a second bore (124) formed by the bag wall (101), the retainer (122) being received in the second bore (124) and sealingly connected to the second bore (124).

23. The bag of claim 17, wherein at least a portion of the moving member (23) is movably disposed within the positioning member (122), and a seal is disposed between the at least a portion and the positioning member (122).

24. The bag of claim 1, wherein at the auxiliary instrument interface (12), the auxiliary instrument interface (12) isolates an interior cavity (102) of the bag body (10) from an exterior side of the bag body (10).

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