Surgical retriever

Abstract

The application discloses a surgical extractor, which comprises a bag body, a sheath and a surgical instrument. The sheath is in sealed connection with the bag body, and the inside of the sheath has an operation channel which is closed relative to the inside of the bag body; the sheath is provided with an opening which is used for connecting the operation channel with the outside of the bag body. The surgical instrument comprises an end effector and an operating mechanism. At least part of the end effector is detachably accommodated in the operation channel via the opening, and the operating mechanism drives the end effector to perform a clamping action or a releasing action in response to being manipulated. The surgical extractor of the application can prevent the tissue liquid adhered to the end effector from polluting the inside of the abdominal cavity when the surgical instrument is taken out after the operation is completed, and the spreading risk is avoided.

Description

Technical Field

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

[0002] A surgical retrieval instrument is a surgical instrument used to remove surgically removed tissue (such as a tumor) from the abdominal cavity. A surgical retrieval instrument includes a bag for holding the removed tissue, comprising a main opening and a secondary opening. When using a surgical retrieval instrument, surgical instruments are typically used to hold the removed tissue within the bag to facilitate its manipulation. The surgical instrument includes an operating mechanism and an end effector; by manipulating the operating mechanism, the end effector performs a clamping or releasing action to hold or release the removed tissue.

[0003] In existing surgical retrieval devices, multiple trocars are inserted into the abdominal cavity to create multiple trocar channels. A bag is placed inside the abdominal cavity through one of the trocar channels, and the excised material is then placed inside the bag from the main bag opening. After the excised material is placed inside the bag, the main bag opening is pulled out through one of the trocar channels, and the auxiliary bag opening is pulled out through another trocar channel. A rotary cutter is then inserted into the bag inside the abdominal cavity from the main bag opening, and the end effector of the surgical instrument is inserted into the bag from the auxiliary bag opening to clamp the excised material within the bag. With the assistance of the surgical instruments, the rotary cutter breaks up the excised material and removes the broken material from the body.

[0004] During the process of breaking up the excised material, the rotary cutter becomes contaminated with the tissue fluid from the excised material. Similarly, the end effectors of surgical instruments become contaminated with the tissue fluid from the excised material as they hold it.

[0005] After the excised material is removed from the body, the rotary cutter is removed from the main pocket opening and the end effectors of the surgical instruments are removed from the auxiliary pocket opening. The auxiliary pocket opening is then inserted into the abdominal cavity through the puncture channel it occupies. Once the auxiliary pocket opening is inserted into the abdominal cavity, the bag is pulled out of the abdominal cavity through the puncture channel by pulling the main pocket opening of the bag.

[0006] During the removal of the cutting instrument and the end effectors of the surgical instruments, tissue fluid adhering to the cutting instrument can contaminate the main pocket opening, while tissue fluid adhering to the end effectors can contaminate the auxiliary pocket opening. Since the main pocket opening remains outside the abdominal cavity, the tissue fluid adhering to it does not contaminate the interior of the abdominal cavity. However, the auxiliary pocket opening needs to be inserted into the abdominal cavity after surgery, leading to tissue fluid adhering to it contaminating the interior of the abdominal cavity and increasing the risk of tumor seeding and spread.

[0007] Based on the above, it is necessary to improve the surgical retrieval devices in the existing technology. Summary of the Invention

[0008] In view of the shortcomings of the prior art, the present invention aims to provide a surgical retrieval device that solves the technical problem that the tissue fluid contaminated by the end actuator of the surgical instrument contaminates the bag opening, thereby causing other normal tissues inside the abdominal cavity to be contaminated.

[0009] This invention is achieved through the following technical solution: a surgical retrieval device, comprising a bag, a sheath, and surgical instruments;

[0010] The sheath is sealed to the bag body, and the inside of the sheath has an operating channel that is relatively closed to the inside of the bag body. The sheath is provided with an opening that connects the operating channel to the outside of the bag body.

[0011] A surgical instrument comprising an end effector and an operating mechanism, wherein at least a portion of the end effector is detachably received within the operating channel via the opening, and in response to manipulation of the operating mechanism, the operating mechanism drives the end effector to perform a clamping or releasing action.

[0012] Furthermore, the sheath includes two actuation units extending toward the interior of the bag body, the opening is located at one end of the sheath, the extended end of the actuation unit is at the other end of the sheath, the operation channel includes an actuation channel located inside each of the actuation units, each actuation channel is closed relative to the interior of the bag body and communicates with the opening, at least a portion of the end actuator is detachably accommodated in the actuation channel via the opening.

[0013] Furthermore, the end effector includes a gripper assembly comprising two pivotally connected grippers; one of the grippers is detachably accommodated in the execution channel of one of the actuators, and the other gripper is detachably accommodated in the execution channel of the other actuator.

[0014] Furthermore, each of the execution units has a clamping portion disposed on its exterior, and when the gripper assembly is closed in response to the operation mechanism being manipulated, the clamping portion of one of the execution units can cooperate with the clamping portion of the other execution unit to clamp the excised material; wherein, the clamping portion of each of the execution units is provided with an anti-slip structure.

[0015] Furthermore, in response to the closing of the gripper assembly, one of the actuators moves synchronously with one of the grippers, and the other actuator moves synchronously with the other gripper.

[0016] Furthermore, in response to the application of force to the surgical instrument, the end effector disengages from the opening within the operating channel.

[0017] Furthermore, the operating mechanism is detachably connected to the end effector, and the surgical instrument has a detached state and a connected state;

[0018] In the separated state, the operating mechanism is separated from the end effector;

[0019] In the connected state, the operating mechanism is located on the outside of the bag and connected to the end effector. In response to the operation of the operating mechanism, the operating mechanism drives the end effector to perform a clamping or releasing action.

[0020] Furthermore, the surgical retrieval device also includes a receiving tube, and the bag has a stored state and an unfolded state;

[0021] In the stored state, the bag body is folded and stored inside the receiving tube, the end effector is separated from the operating mechanism, and the end effector is placed inside the protective sleeve and stored inside the receiving tube along with the bag body;

[0022] When the bag body switches from the stored state to the unfolded state, the bag body moves out of the receiving cylinder and unfolds, and the end effector and the protective sleeve move out of the receiving cylinder along with the bag body.

[0023] Furthermore, the surgical retrieval device also includes a receiving tube, and the bag has a stored state and an unfolded state;

[0024] In the stored state, the bag is folded and stored inside the accommodating tube;

[0025] When the bag body switches from the stored state to the unfolded state, the bag body is removed from the accommodating cylinder and unfolded.

[0026] In the deployed state, in response to the application of force to the surgical instrument, the end effector enters the operating channel from the opening.

[0027] Furthermore, the operating mechanism is fixedly connected to or integrally formed with the end effector.

[0028] Furthermore, the end effector also includes a movable element and a sleeve, each of the grippers being pivotally connected to the sleeve, the movable element being at least partially housed in the sleeve, and the movable element being drivably connected to each of the grippers to drive each of the grippers to rotate when the actuating mechanism drives the movable element to move, such that the gripper assembly opens or closes.

[0029] Furthermore, the operating mechanism includes a lever assembly, which includes an operating lever and a sleeve fitted onto the operating lever. The sleeve is connected to the sleeve, and the operating lever is connected to the moving member to drive the moving member to move.

[0030] Furthermore, the sleeve is detachably connected to the bushing, and the operating lever is detachably connected to the moving part.

[0031] Furthermore, the operating mechanism also includes a handle assembly, the handle assembly comprising:

[0032] A fixed handle is provided, which is connected to the proximal end of the sleeve.

[0033] A movable handle, wherein the movable handle is connected to the proximal end of the operating lever;

[0034] The movable handle is pivotally connected to the fixed handle. In response to the manipulation of the movable handle, the movable handle rotates relative to the fixed handle, causing the operating lever to move relative to the sleeve to drive the moving part to move.

[0035] Compared with the prior art, the beneficial effects of the present invention are as follows: In the surgical instrument of the present invention, during the process of clamping the excised material in the bag, the end actuator is always contained in the operating channel of the sheath, and the end actuator will not be contaminated with the tissue fluid of the excised material. Therefore, when the surgical instrument is removed from the body, the tissue fluid of the excised material will not contaminate other tissues in the abdominal cavity, thus avoiding the risk of contamination spread. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the surgical retrieval device provided in Embodiment 1 of the present invention, wherein the bag is in an unfolded state;

[0037] Figure 2 This is a schematic diagram of the structure of the surgical instrument provided in Embodiment 1 of the present invention;

[0038] Figure 3 This is a schematic diagram of the first angle of the end effector provided in Embodiment 1 of the present invention;

[0039] Figure 4 This is a cross-sectional view of a portion of the surgical retrieval device provided in Embodiment 1 of the present invention, wherein the gripper assembly is in a closed state;

[0040] Figure 5 This is a cross-sectional view of a portion of the surgical retrieval device provided in Embodiment 1 of the present invention, wherein the gripper assembly is in the open state;

[0041] Figure 6 This is a schematic diagram of the structure of the sheath provided in Embodiment 1 of the present invention;

[0042] Figure 7 This is a cross-sectional view of the sheath provided in Embodiment 1 of the present invention;

[0043] Figure 8 This is a schematic diagram of the surgical retrieval device provided in Embodiment 1 of the present invention, wherein the surgical instruments are not shown and the bag is in a stored state;

[0044] Figure 9 This is a schematic diagram of the surgical retrieval device provided in Embodiment 1 of the present invention, wherein the bag is pushed out from the receiving tube, but neither the bag nor the surgical instruments are shown;

[0045] Figure 10 This is a schematic diagram of the end effector and the puncture device provided in Embodiment 1 of the present invention, wherein the end effector and the puncture device are not stuck together;

[0046] Figure 11 This is a schematic diagram of the end effector and the puncture device provided in Embodiment 1 of the present invention, wherein the end effector and the puncture device are stuck together;

[0047] Figure 12 This is a first cross-sectional schematic diagram of the end effector provided in Embodiment 1 of the present invention;

[0048] Figure 13 This is a second cross-sectional schematic diagram of the end effector provided in Embodiment 1 of the present invention;

[0049] Figure 14 This is a schematic diagram of the end effector provided in Embodiment 1 of the present invention, wherein the gripper assembly is in the open state;

[0050] Figure 15 This is a schematic diagram of the end effector provided in Embodiment 1 of the present invention, wherein the gripper assembly is in a closed state;

[0051] Figure 16 This is a schematic diagram of a portion of the surgical instrument provided in Embodiment 1 of the present invention;

[0052] Figure 17 This is a cross-sectional view of a portion of the surgical retrieval device provided in Embodiment 2 of the present invention, wherein the gripper assembly is in a closed state;

[0053] The reference numerals in the above figures are as follows:

[0054] 1. Rod body assembly; 100. Operating rod; 101. Stop block; 110. Sleeve; 2. End actuator; 201. First gripper; 2011. First pivoting part; 2012. First claw-shaped part; 202. Second gripper; 2021. Second pivoting part; 2022. Second claw-shaped part; 210. Moving part; 211. First mounting hole; 212. Second mounting hole; 220. Sleeve; 230. First connecting rod; 240. Second connecting rod; 3. First pin; 4. 400, Bag opening; 401, Interface; 5, Sheath; 500, Opening; 510, Actuation unit; 511, Anti-slip structure; 512, Actuation channel; 6, Puncture device; 600, Instrument inlet; 610, Instrument outlet; 7, Second pin; 8, Movable handle; 810, Main body; 820, Grip; 830, Mounting part; 831, Stop groove; 9, Fixed handle; 10, Push rod; 11, Actuation handle; 12, Receptacle; 13, Elastic support arm. Detailed Implementation

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

[0056] It is important to understand that the terms "proximal" and "distal" used in this article are relative to the clinician manipulating the handle assembly of the surgical instrument. "Proximal" refers to the part closer to the clinician, and "distal" refers to the part farther from the clinician. That is, the handle assembly is the proximal end, and the gripper assembly is the distal end. For example, the proximal end of a component refers to the end relatively closer to the handle assembly, and the distal end refers to the end relatively closer to the gripper assembly. However, surgical instruments can be used in many orientations and positions, so these terms expressing relative positional relationships are not limited or absolute.

[0057] In this invention, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, a movable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium; it 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 there is a qualifier before "connection," 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.

[0058] The term "axial" as used in this document refers to the length direction of the sleeve 110. The "longitudinal axis" of the operating lever 100 is the axis of the operating lever 100 along its length.

[0059] Example 1

[0060] Please see Figure 1-5 This embodiment provides a surgical retrieval device, including a bag 4, a sheath 5, and surgical instruments.

[0061] The bag 4 is used to hold surgical excisions, such as tumors. The bag 4 has an opening 400 to facilitate the placement of the excisions inside the bag 4, and to facilitate the insertion of other surgical instruments into the bag 4 to process the excisions, such as inserting a rotary cutter to break up the excisions.

[0062] The sheath 5 is sealed to the bag body 4, and the sealing connection can be achieved by bonding, welding, or other methods. The inside of the sheath 5 has an operating channel that is relatively closed to the inside of the bag body 4, and the sheath 5 is provided with an opening 500 that connects the operating channel to the outside of the bag body 4.

[0063] The surgical instrument includes an operating mechanism and an end effector 2. In response to manipulation of the operating mechanism, the operating mechanism drives the end effector 2 to perform a clamping or releasing action. At least a portion of the end effector 2 is detachably received within the operating channel of the sheath 5 via an opening 500, i.e., the end effector 2 can be detached from the operating channel of the sheath 5 via the opening 500.

[0064] When using the surgical retrieval instrument, the bag 4 is placed in the abdominal cavity, and the excised material separated from the normal tissue is placed into the bag 4 through the bag opening 400. Then the bag opening 400 is pulled out of the abdominal cavity and out of the body.

[0065] After the bag opening 400 of the bag body 4 is pulled out of the abdominal cavity and out of the body, the excised material is broken up and removed from the body using a rotary cutter with the assistance of surgical instruments in this embodiment. Specifically, the end effector 2 is driven by manipulating the operating mechanism of the surgical instruments to perform a clamping or releasing action. The end effector 2 clamps the excised material inside the bag body 4 through the sheath 5. With the assistance of surgical instruments, the excised material is broken up and removed from the body using a rotary cutter.

[0066] After the excised material is removed from the body, the end effector 2 of the surgical instrument in this embodiment is detached from the sheath 5 through the opening 500, and the surgical instrument is then removed from the body, while the rotary cutter is also removed from the body.

[0067] In this embodiment, during the process of the surgical instrument holding the excised material in the bag 4, the end effector 2 is always housed in the operating channel of the sheath 5. The end effector 2 will not be contaminated with the tissue fluid of the excised material. Therefore, when the surgical instrument is removed from the body, the tissue fluid of the excised material will not contaminate other tissues inside the abdominal cavity, avoiding the risk of contamination spread.

[0068] refer to Figure 4-7 In response to the application of force to the surgical instrument, the operating mechanism moves to disengage the end effector 2 from the operating channel of the sheath 5 at the opening 500. The application of force to the surgical instrument here should refer to applying force to the surgical instrument as a whole, such as grasping the operating mechanism and pulling the entire surgical instrument to disengage the end effector of the surgical instrument from the sheath 5.

[0069] refer to Figure 1 , 4 -5. The sheath 5 is sealed to the bag body 4. Specifically, the bag body 4 is provided with an interface 401. The sheath 5 passes through the interface 401 and is sealed to the interface 401. The sealing connection can be achieved by bonding, welding or other methods.

[0070] refer to Figure 4-7 The sheath 5 includes two actuation units 510, each extending towards the interior of the bag body 4. One end of the sheath 5 is sealed to the interface 401 and has an opening 500, while the extended end of the actuation unit 510 is the other end of the sheath 5. In other words, the end of the sheath 5 with the opening 500 is the open end, and the opposite end of the sheath 5 is the closed end; the extended end of the actuation unit 510 is the closed end of the sheath 5. Each actuation unit 510 is located inside the bag body 4. The operating channel includes an actuation channel 512 located inside each actuation unit 510. That is, each actuation unit 510 has an actuation channel 512 inside. Each actuation channel 512 communicates with the opening 500, and each actuation channel 512 is closed relative to the interior of the bag body 4.

[0071] At least a portion of the end effector 2 is detachably accommodated within the actuation channel via an opening 500. Specifically, refer to Figure 2-5 The end effector 2 includes a gripper assembly comprising two pivotally connected grippers. One gripper is detachably accommodated in the execution channel 512 of one of the execution units 510, and the other gripper is detachably accommodated in the execution channel 512 of the other execution unit 510.

[0072] In response to the closing of the gripper assembly, one actuator 510 moves synchronously with one gripper, and the other actuator 510 moves synchronously with the other gripper. Specifically, in response to the operation mechanism being manipulated, the gripper assembly opens or closes to perform a gripping or releasing action. Since one gripper is located in one actuator 510 and the other gripper is located in the other actuator 510, the movement of the gripper can drive the movement of the actuator 510 in which it is located, thereby enabling the gripper assembly to grip the excised material inside the bag 4 through the sheath 5. In this embodiment, each actuator 510 is made of an elastic material, allowing each actuator 510 to undergo elastic deformation, thereby enabling each actuator 510 to rotate under the action of the gripper housed within it.

[0073] refer to Figure 4-7 Each execution unit 510 has a clamping portion disposed on its exterior. In response to the operation mechanism being manipulated, when the gripper assembly is closed, the clamping portion of one execution unit 510 can cooperate with the clamping portion of the other execution unit 510 to clamp the cut-off material. Thus, the gripper assembly can clamp the cut-off material through the clamping portions of the two execution units 510.

[0074] Each execution unit 510 has a clamping portion equipped with an anti-slip structure 511, which effectively prevents slippage between the clamping portion and the workpiece. Optionally, the anti-slip structure 511 includes multiple protrusions or recesses distributed on the surface of the clamping portion, increasing the clamping friction between the clamping portion and the workpiece and improving the stability of the clamping portion in holding the workpiece. In this embodiment, the anti-slip structure 511 is composed of multiple anti-slip teeth protruding relative to the surface of the clamping portion. One end of the anti-slip tooth is located on the surface of the clamping portion, and the opposite end of the anti-slip tooth is sharp enough to be inserted into the workpiece, improving the clamping stability of the clamping portion in holding the workpiece.

[0075] In this embodiment, the operating channel of the sheath 5 is adapted to the shape of the end effector 2. Optionally, the size of the operating channel of the sheath 5 is smaller than the size of the end effector 2, and the sheath 5 is elastic. When the end effector 2 is placed in the operating channel of the sheath 5, the sheath 5 deforms and tightens around the end effector 2, resulting in a tight fit between the sheath 5 and the end effector 2. This allows the end effector 2 to be stably placed in the operating channel of the sheath 5 and not easily detached. Therefore, during surgery, the end effector 2 can remain within the operating channel of the sheath 5, making the use of surgical instruments more convenient and improving surgical efficiency. It should be noted that the size of the operating channel can also be larger than the size of the end effector 2, while the size of the opening 500 of the sheath 5 is smaller than the size of the end effector 2. This allows the opening 500 of the sheath 5 to deform and tighten around the end effector 2, ensuring that the end effector 2 is stably placed in the operating channel of the sheath 5 and not easily detached. The larger size of the operating channel facilitates the removal of the end effector 2 from the sheath 5 after surgery.

[0076] In this embodiment, the inner wall of the operating channel is rough, which increases the friction between the end effector and the inner wall of the operating channel, further enabling the end effector to be accommodated in the operating channel without easily detaching. It should be noted that the inner wall of the operating channel 512 can also be smooth, while the inner wall of the opening 500 of the sheath 5 is rough. A smooth inner wall for each operating channel 512 facilitates the detachment of the end effector 2 from the sheath 5 after surgery, while a rough inner wall at the opening 500 of the sheath 5 ensures a secure connection between the sheath 5 and the end effector 2.

[0077] Because it is inconvenient to install the end effector 2 into the operating channel of the sheath 5 inside the abdominal cavity, this embodiment provides a detachable connection between the surgical instrument operating mechanism and the end effector 2 to save surgical time and improve the ease of use of the surgical instrument. Specifically:

[0078] In this embodiment, the surgical instrument has a detached state and a connected state. In the detached state, the operating mechanism is separated from the end effector 2. In the connected state, the operating mechanism is located on the outside of the bag 4 and connected to the end effector 2. In the connected state, by manipulating the operating mechanism, the end effector 2 can be driven to perform a clamping or releasing action. Before using the surgical retrieval device, the surgical instrument is in a detached state, and the operating mechanism is separated from the end effector 2 for easy storage and transportation. When using the surgical retrieval device, the operating mechanism and end effector 2 are reassembled.

[0079] Before using the surgical retrieval instrument, the surgical instruments are in a separated state, with the end effector 2 housed within the operating channel of the sheath 5. When using the surgical retrieval instrument, the bag body 4 is placed inside the abdominal cavity, and the end effector 2, housed within the operating channel, is also placed inside the abdominal cavity. The excised material, separated from normal tissue, is then placed into the bag body 4 through the bag opening 400. Finally, the bag opening 400 of the bag body 4 is pulled out of the abdominal cavity and out of the body.

[0080] After the opening 400 of the bag body 4 is pulled out of the abdominal cavity and out of the body, the operating mechanism is inserted into the abdominal cavity and assembled with the end effector 2, so that the operating mechanism is connected to the end effector 2, and the surgical instruments are in a connected state. At this time, the operating mechanism is located on the outside of the bag body 4. When assembling the operating mechanism and the end effector 2, an auxiliary clamp or other instrument can be used to clamp and fix the end effector 2 in the abdominal cavity to facilitate assembly.

[0081] After the operating mechanism and the end effector 2 are assembled, the end effector 2 can be made to perform clamping or releasing actions by manipulating the operating mechanism to clamp or release the cut-out material in the bag 4.

[0082] refer to Figure 8-9 The surgical retrieval device also includes a pushing device and a receiving tube 12.

[0083] The pushing device includes a pushing rod 10 and an actuating handle 11. The pushing rod 10 is movably disposed within the receiving cylinder 12. The pushing rod 10 has opposing first and second ends along a predetermined direction. Figure 9 The placement angle of the surgical retrieval device is used as a reference, and the preset direction is from left to right. The first end of the push rod 10 is connected to two elastic support arms 13. The second end of the push rod 10 is connected to the actuation handle 11, which is located outside the receiving cylinder 12.

[0084] refer to Figure 1 , 8 -9. The opening 400 of the bag body 4 is detachably connected to two elastic support arms 13. Specifically, the opening 400 has a circumferentially arranged support channel. The support channel is annular, starting from a point on the opening 400, circling the opening 400 once, and returning to the starting point, forming two entrances. One elastic support arm 13 is inserted into the support channel from one entrance, and the other elastic support arm 13 is inserted into the support channel from the other entrance.

[0085] The bag body 4 has a folded-out state and an unfolded state. In the folded-out state, the two elastic support arms 13 can be compressed by the inner wall of the receiving cylinder 12 and stored inside the receiving cylinder 12. At this time, the surgical instruments are in a separated state, the operating mechanism is separated from the end effector 2, the end effector 2 is placed in the operating channel of the sheath 5 and stored in the receiving cylinder 12 along with the bag body 4, and the operating mechanism is located outside the receiving cylinder 12. When the bag body 4 switches from the folded-out state to the unfolded state, the bag body 4 is removed from the receiving cylinder 12 and unfolded, and the end effector 2 is removed from the receiving cylinder 12 accordingly.

[0086] When using the surgical retrieval instrument, multiple trocars 6 are inserted into the abdominal cavity. The trocars 6 have instrument channels through which the surgical retrieval instrument, surgical instruments, and rotary cutter enter and exit the abdominal cavity.

[0087] After the container 12 is placed inside the abdominal cavity through the instrument channel of one of the trocars 6, the actuation handle 11 is manipulated to move the push rod 10 in the opposite direction to the preset direction. At this time, the two elastic support arms 13 extend out of the container 12 and gradually open. During this process, the two elastic support arms 13 move the bag 4 out of the container 12 and open the bag opening 400 so that the bag 4 unfolds in the abdominal cavity. At this time, the bag 4 switches from the stored state to the unfolded state.

[0088] After the bag body 4 is switched to the unfolded state, the actuation handle 11 is operated to move the push rod 10 in the preset direction, so that the two elastic support arms 13 are stored in the receiving cylinder 12 and separated from the bag body 4. Then the receiving cylinder 12 is taken out from the instrument channel where it is located to the outside of the abdominal cavity, so that the bag body 4 is placed in the abdominal cavity, and the end actuator 2, which is contained in the operating channel of the sheath 5, is also placed in the abdominal cavity.

[0089] After the bag 4 is placed in the abdominal cavity, the bag opening 400 of the bag 4 is pulled out to the outside of the body through an instrument channel. Then, the operating mechanism is inserted into the abdominal cavity through another instrument channel and assembled with the end effector 2 to assist in clamping the excised material in the bag 4. With the assistance of surgical instruments, the excised material is broken up and removed to the outside of the body using a rotary cutter.

[0090] After the excised material is removed from the body, there is no need to disassemble the operating mechanism and end effector of the surgical instrument. Pulling the operating mechanism of the surgical instrument causes the end effector 2 to detach from the operating channel of the sheath 5, thus separating the end effector 2 from the bag body 4. Then, the entire surgical instrument is pulled out of its instrument channel and out of the body. After the end effector 2 detaches from the bag body 4, the bag body 4 is pulled out of its instrument channel and out of the body.

[0091] refer to Figure 10-11After the trocar 6 is inserted into the abdominal cavity, one end of the trocar 6 has an instrument inlet 600 located outside the abdominal cavity, and the other end has an instrument outlet 610 located inside the abdominal cavity. Both the instrument inlet 600 and the instrument outlet 610 are connected to the instrument channel of the trocar 6. During the operation, the surgical retrieval instrument, surgical instruments, and rotary cutter all enter the instrument channel through the corresponding instrument inlet 600 of the trocar 6, and then enter the abdominal cavity through the corresponding instrument outlet 610 of the trocar 6. After the operation, the surgical retrieval instrument, surgical instruments, and rotary cutter all enter the instrument channel through the corresponding instrument outlet 610 of the trocar 6, and then exit outside the body through the corresponding instrument inlet 600 of the trocar 6.

[0092] When removing the surgical instrument from the body, the longitudinal axis of the end effector 2 is made to be approximately parallel to the longitudinal axis of the instrument channel where the surgical instrument is located under the action of the operating mechanism. This allows the end effector 2 to enter the instrument channel from the instrument outlet 610 of the trocar 6 without getting stuck at the instrument outlet 610, thus facilitating the removal of the surgical instrument from the body.

[0093] After surgery, if the end effector 2 is left in the operating channel of the sheath 5, and the bag body 4 and the end effector 2 are pulled out of the body by pulling the bag body 4, the end effector 2 is likely to get stuck at the instrument outlet 610 of the instrument channel because it is difficult to adjust the direction of the end effector 2, thus making it difficult to remove the bag body 4 out of the body.

[0094] In this embodiment, the end effector 2 is detached from the bag 4 after surgery, which avoids the problem that the bag 4 is difficult to remove from the abdominal cavity through the instrument channel of the trocar 6 because the end effector 2 is stuck with the trocar 6. This makes it easier to remove the bag 4 out of the body and improves the convenience of using the surgical retrieval device.

[0095] refer to Figure 2-3 12-15, the end effector 2 further includes a movable member 210 and a sleeve 220. The movable member 210 is housed in the sleeve 220 and is drivably connected to each gripper, so that when the movable member 210 moves, it can drive each gripper to rotate, causing the gripper assembly to open or close. Specifically, the end effector 2 also includes two linkage assemblies, through which the movable member 210 is drivably connected to the grippers. For ease of description, the two grippers are referred to below as the first gripper 201 and the second gripper 202.

[0096] The first gripper 201 and the second gripper 202 are pivotally connected by a first pin 3. Specifically, the first gripper 201 includes a first claw-shaped portion 2012 and a first pivot portion 2011, and the second gripper 202 includes a second claw-shaped portion 2022 and a second pivot portion 2021. The first claw-shaped portion 2012 and the second claw-shaped portion 2022 are both disposed outside the sleeve 220, and the first pivot portion 2011 and the second pivot portion 2021 are both at least partially disposed inside the sleeve 220. The first pin 3 passes through the first pivot portion 2011 and the second pivot portion 2021 in sequence, and both ends of the first pin 3 are fixed to the sleeve 220, so that the first gripper 201 and the second gripper 202 can rotate relative to the sleeve 220 around the first pin 3.

[0097] The first gripper 201 is drivably connected to the moving member 210 via a linkage assembly, and the second gripper 202 is drivably connected to the moving member 210 via another linkage assembly. Thus, when the moving member 210 moves axially, it can drive each linkage assembly to move, thereby moving each gripper and opening or closing the gripper assembly.

[0098] Each linkage assembly includes a pivotally connected first link 230 and second link 240, wherein the first link 230 is rotatably connected to the movable member 210, and the second link 240 is connected to a corresponding gripper. When the movable member 210 moves axially, the first link 230 and the second link 240 swing in opposite directions.

[0099] refer to Figure 4-5 The distal end of the sleeve 220 is inserted into the opening 500 of the sheath 5. The sleeve 220 is partially located inside the sheath 5. The first claw-shaped portion 2012 of the first gripper 201 is disposed in the execution channel 512 of one execution unit 510 of the sheath 5. The second claw-shaped portion 2022 of the second gripper 202 is disposed in the execution channel 512 of another execution unit 510 of the sheath 5.

[0100] refer to Figure 12-15 and with Figure 12 Taking the placement angle of the surgical instruments as a reference, the movable member 210 has a first side and a second side perpendicular to the plane of the paper. The movable member 210 is provided with a first mounting hole 211 and a second mounting hole 212 from bottom to top, that is, the first mounting hole 211 is located below the second mounting hole 212. The first claw-shaped portion 2012 of the first gripper 201 is below the second claw-shaped portion 2022 of the second gripper 202.

[0101] One of the first links 230 is disposed on the first side of the moving member 210, with its proximal end connected to the first mounting hole 211 via a first rotating shaft, and its distal end pivotally connected to one of the second links 240, which is connected to the first pivot portion 2011 of the first gripper 201.

[0102] Another first link 230 is disposed on the second side of the moving member 210, with its proximal end connected to the second mounting hole 212 via a second rotating shaft, and its distal end pivotally connected to another second link 240, which is connected to the second pivot portion 2021 of the second gripper 202.

[0103] refer to Figure 12-15 In response to the movement of the movable member 210 towards the proximal end (i.e., backward), the first link 230 located on the first side of the movable member 210 rotates counterclockwise, and the corresponding second link 240 rotates clockwise, causing the first gripper 201 to rotate upward; at the same time, the first link 230 located on the second side of the movable member 210 rotates clockwise, and the corresponding second link 240 rotates counterclockwise, causing the second gripper 202 to rotate downward, thereby closing the gripper assembly to perform the clamping action.

[0104] In response to the movement of the movable member 210 to the distal end (i.e. forward), the first link 230 located on the first side of the movable member 210 rotates clockwise, and the corresponding second link 240 rotates counterclockwise, causing the first gripper 201 to rotate downward; at the same time, the first link 230 located on the second side of the movable member 210 rotates counterclockwise, and the corresponding second link 240 rotates clockwise, causing the second gripper 202 to rotate upward, thereby opening the gripper assembly to perform a release action.

[0105] Continue to refer to Figure 12-15 The operating mechanism includes a lever assembly 1 and a handle assembly. The lever assembly 1 includes an operating lever 100 and a sleeve 110 fitted onto the operating lever 100.

[0106] The sleeve 110 and the sleeve 220 are detachably connected via a threaded structure. Specifically, the distal end of the sleeve 110 is provided with a first external thread, and the proximal end of the sleeve 220 is provided with a first internal thread adapted to the first external thread. The distal end of the sleeve 110 can be inserted into the proximal end of the sleeve 220, so that the first external thread and the first internal thread are connected, thereby realizing the threaded connection between the sleeve 110 and the sleeve 220.

[0107] The operating lever 100 and the movable member 210 are detachably connected via a threaded structure. Specifically, the distal end of the operating lever 100 is provided with a second external thread, and the movable member 210 has an inner hole with a second internal thread adapted to the second external thread. The distal end of the operating lever 100 extends from the sleeve 110 and is inserted into the inner hole of the movable member 210, so that the second external thread and the second internal thread are connected, thereby realizing the threaded connection between the operating lever 100 and the movable member 210. The operating lever 100 can drive the movable member 210 to move to drive the gripper assembly to open or close, causing the gripper assembly to perform a release action or a clamping action.

[0108] In addition to using a threaded structure to achieve a detachable connection between the operating mechanism and the end effector, other detachable connection forms familiar to those skilled in the art can also be used.

[0109] refer to Figure 2 , Figure 16 The handle assembly includes a fixed handle 9 and a movable handle 8. The movable handle 8 is rotatably connected to the fixed handle 9 via a second pin 7. The proximal end of the sleeve 110 is connected to the fixed handle 9, and there is no relative movement between the sleeve 110 and the fixed handle 9. The fixed handle 9 is sleeved on the operating lever 100, which is capable of rotating relative to the fixed handle 9 about its longitudinal axis and moving axially.

[0110] The movable handle 8 is rotatably connected to the operating lever 100, and the movable handle 8 and the operating lever 100 are axially fixed. For details, please refer to... Figure 16 The operating lever 100 is provided with a spherical stop block 101. The movable handle 8 includes a main body 810, a grip portion 820 for user operation located at one end of the main body 810, and a mounting portion 830 located at the other end of the main body 810. A stop groove 831 is provided in the mounting portion 830, and the inner wall of the stop groove 831 is an arc surface that fits with the stop block 101. The proximal end of the operating lever 100 passes through the mounting portion 830 of the movable handle 8, and the stop block 101 of the operating lever 100 is located in the stop groove 831 of the movable handle 8, and the stop groove 831 encloses the stop block 101, so that the stop block 101 can rotate around the longitudinal axis of the operating lever 100 in the stop groove 831, and the stop groove 831 can support the stop block 101 in the longitudinal axis direction of the operating lever 100. 1. Limiting the movement of the stop block 101 so that there is no relative movement between the stop block 101 and the stop groove 831 in the longitudinal axis direction of the operating lever 100. Thus, the operating lever 100 can rotate relative to the movable handle 8 about the longitudinal axis of the operating lever 100. At the same time, by driving the movable handle 8 to rotate relative to the fixed handle 9, the operating lever 100 can be driven to move axially relative to the sleeve 110. The operating lever 100 can drive the moving part 210 to move to drive the gripper assembly to open or close, so that the gripper assembly performs a release action or a gripping action.

[0111] When using the surgical retrieval instrument, after the bag body 4 is placed in the abdominal cavity, the shaft assembly 1 of the surgical instrument is inserted into the abdominal cavity through the instrument channel of the trocar 6 and connected to the end effector 2. The handle assembly remains outside the abdominal cavity. Specifically, the cannula 110 is inserted into the sleeve 220, and rotating the cannula 110 allows for a threaded connection between the cannula 110 and the sleeve 220. The operating rod 100 is inserted into the inner hole of the moving part 210, with the proximal end of the operating rod 100 passing through the mounting portion 830 of the movable handle 8, thereby allowing manipulation of the proximal end of the operating rod 100 to rotate and thread it into the moving part 210. In actual operation, since the operating rod 100 can rotate independently of the cannula 110, there is no fixed order for connecting the cannula 110 or the operating rod 100 first; users can choose according to their usage habits.

[0112] After the rod assembly 1 is connected to the end actuator 2, it actuates the movable handle 8, causing the movable handle 8 to rotate relative to the fixed handle 9. This causes the movable handle 8 to drive the operating rod 100 to move axially relative to the sleeve 110. The operating rod 100 drives the moving part 210 to move, causing the gripper assembly to close or open, so as to grip or release the excised material in the bag 4. With the assistance of the surgical instruments in this embodiment, the excised material is processed and removed from the body using a rotary cutter.

[0113] After the excised material is removed from the body, the rotary cutter and the surgical instruments of this embodiment are also removed from the body. The removal of the surgical instruments typically requires an auxiliary clamp. The main function of the auxiliary clamp is to help the end effector 2 disengage from the sheath 5. For example, an auxiliary clamp with a clamping mechanism for holding the object is used. The clamping mechanism of the auxiliary clamp holds the sleeve 220 of the end effector 2 on the outside of the bag 4. Then, the surgical instrument is pulled outwards from the abdominal cavity by the handle assembly to disengage the end effector 2 from the opening 500 of the sheath 5 from the operating channel. During the pulling of the surgical instrument, the sheath 5 is stopped by the clamping mechanism of the auxiliary clamp on one side of the clamping mechanism, and the sleeve 220 of the end effector 2 slides relative to the clamping mechanism of the auxiliary clamp, disengaging the end effector 2 from the opposite side of the clamping mechanism. The primary function of the auxiliary clamp is to stop the sheath 5 to one side, preventing it from moving with the end effector 2, thus allowing the end effector 2 to detach from the sheath 5. It does not clamp the end effector 2. Therefore, when using the auxiliary clamp to hold the end effector 2, the clamping force should allow the sleeve 220 and the clamping mechanism to slide relative to each other. After the end effector 2 detaches from the operating channel through the opening 500 of the sheath 5, the surgical instruments can be removed from the abdominal cavity.

[0114] Example 2

[0115] The difference between this embodiment and embodiment 1 is that: before using the surgical instrument, the end effector 2 of the surgical instrument is not placed in the operating channel of the sheath 5, and during use, the end effector of the surgical instrument is placed in the sheath 5.

[0116] refer to Figure 17 It is advisable to make the size of the operating channel of the sheath 5 larger than the size of the end effector 2, so that the end effector 2 can easily enter the sheath 5. Therefore, the end effector 2 does not need to be placed in the operating channel of the sheath 5 before using the surgical retrieval instrument, and can be placed in the operating channel when in use.

[0117] Since the end effector 2 does not need to be placed in the operating channel of the sheath 5 before using the surgical instrument, in this embodiment, the end effector 2 of the surgical instrument and the operating mechanism can be detachably connected or non-detachably connected, and the appropriate surgical instrument can be selected according to the usage requirements. If the end effector 2 of the surgical instrument and the operating mechanism are detachably connected, the end effector 2 and the operating mechanism are assembled so that the surgical instrument is switched to the connected state before use.

[0118] Specifically, the end effector 2 is detachably connected to the operating mechanism, that is, the sleeve 220 of the end effector and the sleeve of the operating mechanism are detachably connected by a threaded structure, and the moving part 210 of the end effector 2 is detachably connected to the operating rod 100 of the operating mechanism by a threaded structure. The specific connection form can refer to the threaded structure in Embodiment 1 or other connection forms familiar to those skilled in the art.

[0119] The end effector 2 is non-detachably connected to the operating mechanism, that is, the sleeve 220 of the end effector 2 is fixedly connected to the sleeve of the operating mechanism or integrally formed, and the moving part 210 of the end effector 2 is fixedly connected to the operating rod 100 of the operating mechanism or integrally formed.

[0120] The bag body 4 has a folded state and an unfolded state. In the folded state, the bag body 4 is folded and stored inside the receiving tube 12, and the end actuator 2 of the surgical instrument is not housed in the sheath 5. The surgical instrument as a whole is independent of the receiving tube 12.

[0121] When the bag changes from the stored state to the unfolded state, the bag is removed from the container and unfolds.

[0122] In the deployed state, in response to the application of force to the surgical instrument, the end effector enters the operating channel from the opening. Specifically, in response to the application of force to the surgical instrument, the operating mechanism moves to drive the end effector 2 from the opening 500 into the operating channel of the sheath 5. The application of force to the surgical instrument here should refer to applying force to the entire surgical instrument, such as gripping the operating mechanism to move the entire surgical instrument so that the end effector of the surgical instrument enters the sheath 5.

[0123] When using the surgical retrieval instrument, the bag body 4 is placed inside the abdominal cavity. The excised material, separated from normal tissue, is then placed inside the bag body 4 through the bag opening 400. The bag opening 400 is then pulled out of the abdominal cavity and out of the body. After the bag opening 400 is pulled out of the abdominal cavity, the shaft assembly and end effector of the surgical instrument are inserted into the abdominal cavity and positioned on the outside of the bag body 4.

[0124] After the surgical instrument is inserted into the outer side of the bag 4 in the abdominal cavity, force is applied to the operating mechanism, such as by gripping the handle assembly to move the surgical instrument as a whole, so that the end actuator 2 of the surgical instrument enters the operating channel of the sheath 5. Then, the operating mechanism, i.e. the operating handle assembly, is manipulated so that the end actuator 2 performs a clamping or releasing action in the operating channel to clamp or release the excised material in the bag 4.

[0125] If the end effector 2 detaches from the operating channel during the surgical procedure, the surgeon can simply insert the end effector 2 of the surgical instrument back into the operating channel of the sheath 5.

[0126] In this embodiment, with the assistance of surgical instruments, a rotary cutter is used to break up the excised material and remove it from the body. After the excised material is removed from the body, the rotary cutter and the surgical instruments of this embodiment are also removed from the body.

[0127] In this embodiment, during the process of the surgical instrument holding the excised material in the bag 4, the end effector 2 is always housed in the operating channel of the sheath 5. The end effector 2 never comes into contact with the excised material in the bag. Therefore, the end effector 2 will not be contaminated with the tissue fluid of the excised material. Thus, when the surgical instrument is removed from the body, the tissue fluid of the excised material will not contaminate other tissues inside the abdominal cavity, avoiding the risk of contamination spread.

[0128] In this embodiment, the size of the operating channel of the sheath 5 is larger than the size of the end effector 2, and the end effector 2 can be easily detached from the operating channel, so that the end effector 2 can be easily detached from the sheath 5 after the operation.

[0129] In summary, in this invention, during the process of the surgical instrument holding the excised material in the bag 4, the end effector 2 is always housed in the operating channel of the sheath 5, and the end effector 2 will not be contaminated with the tissue fluid of the excised material. Therefore, when the surgical instrument is removed from the body, the tissue fluid of the excised material will not contaminate other tissues inside the abdominal cavity, thus avoiding the risk of contamination spread.

[0130] In this invention, after surgery, the end actuator 2 of the surgical instrument detaches from the bag 4, avoiding the problem that the bag 4 is difficult to remove from the abdominal cavity through the puncture device 6 channel because the end actuator 2 is stuck with the puncture device 6. This makes it easier to pull the bag 4 out of the instrument channel of the puncture device 6 and out of the body.

[0131] 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.

[0132] 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 surgical retrieval device, characterized in that, Includes the bag body, sheath, and surgical instruments; The sheath is sealed to the bag body, and the inside of the sheath has an operating channel that is relatively closed to the inside of the bag body. The sheath is provided with an opening that connects the operating channel to the outside of the bag body. A surgical instrument comprising an end effector and an operating mechanism, wherein at least a portion of the end effector is detachably received within the operating channel via the opening, and in response to manipulation of the operating mechanism, the operating mechanism drives the end effector to perform a clamping or releasing action. The sheath includes two actuation units extending toward the interior of the bag body. The opening is located at one end of the sheath, and the extended end of the actuation unit is at the other end of the sheath. The operation channel includes an actuation channel located inside each actuation unit. Each actuation channel is closed relative to the interior of the bag body and communicates with the opening. At least a portion of the end actuator is detachably accommodated within the actuation channel via the opening.

2. The surgical retrieval device according to claim 1, characterized in that, The end effector includes a gripper assembly comprising two pivotally connected grippers; one gripper is detachably accommodated in the execution channel of one of the actuators, and the other gripper is detachably accommodated in the execution channel of the other actuator.

3. The surgical retrieval device according to claim 2, characterized in that, Each of the execution units has a clamping portion disposed on its exterior, and when the gripper assembly is closed in response to the operation mechanism being manipulated, the clamping portion of one of the execution units can cooperate with the clamping portion of the other execution unit to clamp the excised material; wherein, the clamping portion of each of the execution units is provided with an anti-slip structure.

4. The surgical retrieval device according to claim 2, characterized in that, In response to the closing of the gripper assembly, one of the actuators moves synchronously with one of the grippers, and the other actuator moves synchronously with the other gripper.

5. The surgical retrieval device according to claim 1, characterized in that, In response to the application of force to the surgical instrument, the end effector disengages from the opening and from the operating channel.

6. The surgical retrieval device according to claim 1, characterized in that, The operating mechanism is detachably connected to the end effector, and the surgical instrument has a detached state and a connected state; In the separated state, the operating mechanism is separated from the end effector; In the connected state, the operating mechanism is located on the outside of the bag and connected to the end effector. In response to the operation of the operating mechanism, the operating mechanism drives the end effector to perform a clamping or releasing action.

7. The surgical retrieval device according to claim 6, characterized in that, The surgical retrieval device also includes a receiving tube, and the bag has a stored state and an unfolded state; In the stored state, the bag body is folded and stored inside the receiving tube, the end effector is separated from the operating mechanism, and the end effector is placed inside the protective sleeve and stored inside the receiving tube along with the bag body; When the bag body switches from the stored state to the unfolded state, the bag body moves out of the receiving cylinder and unfolds, and the end effector and the protective sleeve move out of the receiving cylinder along with the bag body.

8. The surgical retrieval device according to claim 1, characterized in that, The surgical retrieval device also includes a receiving tube, and the bag has a stored state and an unfolded state; In the stored state, the bag is folded and stored inside the accommodating tube; When the bag body switches from the stored state to the unfolded state, the bag body is removed from the accommodating cylinder and unfolded. In the deployed state, in response to the application of force to the surgical instrument, the end effector enters the operating channel from the opening.

9. The surgical retrieval device according to claim 1, characterized in that, The operating mechanism is fixedly connected to or integrally formed with the end effector.

10. The surgical retrieval device according to claim 2, characterized in that, The end effector further includes a movable element and a sleeve, each of the grippers being pivotally connected to the sleeve, the movable element being at least partially housed in the sleeve, and the movable element being drivably connected to each of the grippers to drive each of the grippers to rotate when the actuating mechanism drives the movable element to move, such that the gripper assembly opens or closes.

11. The surgical retrieval device according to claim 10, characterized in that, The operating mechanism includes a lever assembly, which includes an operating lever and a sleeve fitted onto the operating lever. The sleeve is connected to the sleeve, and the operating lever is connected to the moving part to drive the moving part to move.

12. The surgical retrieval device according to claim 11, characterized in that, The sleeve is detachably connected to the sleeve, and the operating lever is detachably connected to the moving part.

13. The surgical retrieval device according to claim 11, characterized in that, The operating mechanism further includes a handle assembly, the handle assembly comprising: A fixed handle is provided, which is connected to the proximal end of the sleeve. A movable handle, wherein the movable handle is connected to the proximal end of the operating lever; The movable handle is pivotally connected to the fixed handle. In response to the manipulation of the movable handle, the movable handle rotates relative to the fixed handle, causing the operating lever to move relative to the sleeve to drive the moving part to move.

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