Surgical retriever

Abstract

The application discloses a surgical extractor, which comprises a bag body and a surgical instrument. The surgical instrument comprises an operating mechanism, an end effector and a connecting mechanism. The end effector is sealingly connected with the bag body and is at least partially arranged inside the bag body. The operating mechanism is arranged outside the bag body and is detachably connected with the end effector through the connecting mechanism. The connecting mechanism comprises a locking piece, an actuating mechanism and a locking arm. The locking piece is arranged on the operating mechanism. The actuating mechanism is arranged on the operating mechanism. The actuating mechanism drives the locking piece to switch between an unlocking position and a locking position. The locking arm is arranged on one of the end effector and the operating mechanism and is detachably engaged with the other one. When the locking piece is in the unlocking position, the locking arm is disengaged from the other one. When the locking piece is in the locking position, the locking arm is engaged with the other one. 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, thereby avoiding the diffusion risk.

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 from the abdominal cavity. The instrument consists of a bag for holding the removed tissue, with a main opening and auxiliary openings for inserting different surgical instruments. 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. Manipulating the operating mechanism causes the end effector to perform grasping or releasing actions to hold or release the removed tissue.

[0003] In existing surgical retrieval devices, the bag is placed inside the abdominal cavity to hold the excised material, such as a tumor. Surgical instruments are then inserted into the bag through an auxiliary opening to hold the excised material. Other surgical instruments are inserted into the bag through the main opening or other auxiliary openings. A rotary cutter is used to break up the excised material and remove the broken material from the body.

[0004] After the excised tissue has been removed from the body, the surgical instruments are removed from the auxiliary pocket from where they were located, and other surgical instruments are removed from the main pocket or the auxiliary pocket from where they were located.

[0005] During the process of the surgical instrument's end effector holding the excised material, the end effector may become contaminated with the tissue fluid from the excised material. When the surgical instrument is removed, the tissue fluid contaminated with the end effector may also contaminate the auxiliary pocket opening where it is located. This could lead to the tissue fluid on the end effector or the auxiliary pocket opening contaminating the abdominal cavity and increasing the risk of tumor seeding and spread.

[0006] Based on the above, it is necessary to improve the surgical retrieval devices in the existing technology. Summary of the Invention

[0007] 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.

[0008] This invention is achieved through the following technical solution:

[0009] A surgical retrieval device includes a bag and surgical instruments, the surgical instruments including an operating mechanism, an end effector, and a connecting mechanism; the end effector is sealed to the bag and at least partially disposed inside the bag, the operating mechanism is located outside the bag and detachably connected to the end effector via the connecting mechanism, the connecting mechanism comprising:

[0010] A locking element is disposed on the operating mechanism, the locking element having an unlocked position and a locked position;

[0011] An actuating mechanism, disposed on the operating mechanism, is connected to the locking member, and drives the locking member to switch between the unlocked position and the locked position; and

[0012] A locking arm is disposed on one of the end effector and the operating mechanism and is detachably engaged with the other. When the locking element is in the unlocked position, the locking arm disengages from the other, thereby unlocking the end effector from the operating mechanism. When the locking element is in the locked position, the locking element constrains the locking arm so that the locking arm engages with the other, thereby locking the end effector from the operating mechanism.

[0013] Furthermore, the actuation mechanism includes an actuating element and an elastic element. The actuating element is connected to the locking element to drive the locking element to move from the locked position to the unlocked position, and the elastic element biases the locking element to the locked position.

[0014] Furthermore, the operating mechanism includes a rod assembly, the end effector includes a clamping mechanism and a sleeve fitted onto the clamping mechanism, the rod assembly includes an operating rod and a sleeve fitted onto the operating rod, the sleeve and the sleeve are detachably connected, and the clamping mechanism is detachably connected to the operating rod.

[0015] Furthermore, the clamping mechanism is disposed inside the bag body, and the sleeve is sealed to the bag body.

[0016] Furthermore, the locking arm includes a first locking arm and a second locking arm, the first locking arm being disposed in one of the sleeve and the tube and detachably engaged with the other, and the second locking arm being disposed in one of the clamping mechanism and the operating lever and detachably engaged with the other;

[0017] When the locking member is in the unlocked position, the first locking arm disengages from its corresponding other locking member, and the second locking arm disengages from its corresponding other locking member.

[0018] When the locking member is in the locked position, the first locking arm is constrained by the locking member and engages with its corresponding other arm, and the second locking arm is constrained by the locking member and engages with its corresponding other arm.

[0019] Furthermore, the locking member is disposed between the operating lever and the sleeve. When the locking member is in the locked position, the outer wall of the locking member abuts against the first locking arm to constrain the first locking arm, and the inner wall of the locking member abuts against the second locking arm to constrain the second locking arm.

[0020] Furthermore, the first locking arm is disposed on the sleeve and detachably engaged with the inner wall of the sleeve, and the second locking arm is disposed on the clamping mechanism and detachably engaged with the outer wall of the operating rod.

[0021] Furthermore, the clamping mechanism includes a gripper assembly and a movable member, the movable member being drivably connected to the gripper assembly; a second locking arm is disposed on the movable member; when the locking member is in the locked position, the operating lever moves axially to drive the movable member to move axially, so that the gripper assembly opens or closes.

[0022] Furthermore, the sleeve is provided with a guide portion, and the bushing is provided with a limiting portion, the limiting portion cooperating with the guide portion to limit the sleeve.

[0023] Furthermore, the operating mechanism also includes a handle assembly, the handle assembly comprising:

[0024] A fixed handle is provided, which is connected to the proximal end of the sleeve.

[0025] A movable handle, wherein the movable handle is connected to the proximal end of the operating lever;

[0026] The movable handle is pivotally connected to the fixed handle. In response to the application of force to the movable handle, the movable handle rotates relative to the fixed handle, causing the operating lever to move relative to the sleeve.

[0027] Furthermore, the actuation mechanism includes an actuator connected to the locking member to drive the locking member to switch between the unlocked position and the locked position.

[0028] Compared with the prior art, the beneficial effects of the present invention are as follows: The surgical instrument retrieval device of the present invention has the end actuator of the surgical instrument placed inside the bag, and the operating mechanism is located on the outside of the bag and detachably connected to the end actuator. Thus, when the surgical instrument is removed after the operation, the end actuator is placed inside the bag and pulled out of the body with the bag, so that the tissue fluid on the end actuator will not contaminate the abdominal cavity and avoid the risk of contamination spread. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of the surgical retrieval device provided in a specific embodiment of the present invention, wherein the bag body is in an unfolded state;

[0030] Figure 2 This is a schematic diagram of the structure of the surgical retrieval device provided in a specific embodiment of the present invention, wherein the bag is in a stored state;

[0031] Figure 3 This is a schematic diagram of the surgical retrieval device provided in a specific embodiment of the present invention, wherein the bag body is not shown;

[0032] Figure 4 This is a schematic diagram of the structure of the surgical instrument provided in a specific embodiment of the present invention;

[0033] Figure 5 This is a cross-sectional view of the surgical instrument provided in a specific embodiment of the present invention;

[0034] Figure 6 This is an exploded view of a surgical instrument provided in a specific embodiment of the present invention, wherein some handle components are not shown;

[0035] Figure 7 This is a cross-sectional view of an end effector provided in a specific embodiment of the present invention, wherein the locking member is in the unlocked position and the gripper assembly is closed;

[0036] Figure 8 This is a cross-sectional view of an end effector provided in a specific embodiment of the present invention, wherein the locking member is in the locked position and the gripper assembly is closed;

[0037] Figure 9 This is a cross-sectional view of the end effector provided in a specific embodiment of the present invention, mainly to show the structure of the first locking arm, wherein the locking member is in the locked position;

[0038] Figure 10 This is a cross-sectional view of an end effector provided in a specific embodiment of the present invention, wherein the locking member is in the locked position and the gripper assembly is open;

[0039] Figure 11 This is a schematic diagram of the end effector provided in a specific embodiment of the present invention, wherein the sleeve and the first gripper are not shown, and the locking member is in the locked position;

[0040] Figure 12 This is a schematic diagram of the end effector provided in a specific embodiment of the present invention, wherein the sleeve and the first gripper are not shown, and the locking member is in the unlocked position;

[0041] Figure 13 This is a schematic diagram of the end effector provided in a specific embodiment of the present invention, mainly to show the internal structure of the sleeve;

[0042] Figure 14This is a cross-sectional view of the surgical instrument provided in a specific embodiment of the present invention, mainly to illustrate the way the sleeve and cannula are fitted together;

[0043] Figure 15 This is a cross-sectional view of a surgical instrument provided in a specific embodiment of the present invention, mainly to illustrate the cooperation method between the actuator and the locking member;

[0044] Figure 16 This is a cross-sectional view of the surgical instrument provided in a specific embodiment of the present invention from another angle, mainly to show the cooperation method between the actuator and the locking member;

[0045] Reference numerals in the above figures: 1-End actuator; 100-Clamping mechanism; 101-First gripper; 102-Second gripper; 1021-Sliding shaft; 103-Moving component; 1031-Slide groove; 110-Sleeve; 111-First groove; 112-Recess; 113-First receiving part; 114-Second receiving part; 115-Stop part; 2-Rod assembly; 200-Operating rod; 201-Stop block; 202-Second groove; 210-Sleeve; 211-Protrusion; 220-Mounting tube; 221-U-shaped hole; 3-Fixed handle; 310-Second main body part ; 320-Second gripping part; 330-Second mounting part; 331-Seat body; 332-Protruding post; 333-Connecting sleeve; 4-Modible handle; 410-First main body part; 420-First gripping part; 430-First mounting part; 431-Stop groove; 5-Pin; 6-First locking arm; 610-First locking part; 7-Second locking arm; 710-Second locking part; 8-Locking element; 810-Allowing groove; 9-Actuating element; 910-Connecting post; 10-Elastic element; 11-Containing cylinder; 12-Elastic support arm; 13-Bag body; 1310-Bag opening; 14-Push rod; 15-Actuating handle. Detailed Implementation

[0046] 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.

[0047] 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.

[0048] 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.

[0049] The term “disengagement” as used in this article refers to two components that have separated, or that are in a separable state but have not yet separated.

[0050] As used in this article, the term "engaged" refers to two elements connected together and unable to be separated. Engaged and disengaged are two corresponding states between two elements. The term "detachably engaged with another" means that two elements are in an engaged state and cannot be separated, but the engaged state can be released, allowing the two elements to disengage.

[0051] The term "axial" as used in this document refers to the length direction of the sleeve 210. The "longitudinal axis" of the operating lever 200 is the axis of the operating lever 200 along its length.

[0052] Please see Figure 1 This embodiment provides a surgical retrieval device, including a pushing device, a receiving tube 11, a bag body 13, and surgical instruments.

[0053] refer to Figure 1-3 The pushing device includes a pushing rod 14 and an actuating handle 15. The pushing rod 14 is movably disposed in the receiving cylinder 11. The pushing rod 14 has opposing first and second ends along a third direction. Figure 3The placement angle of the surgical retrieval device is used as a reference, with the third direction being from left to right. The first end of the push rod 14 is connected to two elastic support arms 12. The second end of the push rod 14 is connected to the actuation handle 15, which is located outside the receiving cylinder 11.

[0054] The bag 13 is used to hold surgically removed material, such as a tumor. (See reference) Figure 1 The bag body 13 has an opening 1310 to facilitate the placement of surgical specimens within the bag body 13 and the insertion of other surgical instruments into the bag body 13 for processing the specimens. The opening 1310 of the bag body 13 is detachably connected to two elastic support arms 12. Specifically, the opening 1310 has a circumferentially arranged channel, which is annular and starts from a point on the opening 1310, circumferentially around the opening 1310, and returns to the starting point, forming two channel openings. One elastic support arm 12 is inserted into the channel through one channel opening, and the other elastic support arm 12 is inserted into the channel through the other channel opening, thereby opening the opening 1310 and placing the bag body 13 in an unfolded state. In the initial state, the two elastic support arms 12 can be compressed by the inner wall of the receiving cylinder 11 and stored in the receiving cylinder 11, placing the bag body 13 in a stored state.

[0055] refer to Figure 1 and Figure 4-5 The surgical instrument includes an operating mechanism, an end effector 1, and a connecting mechanism. The end effector 1 is sealed to a bag 13 to prevent leakage of tissue fluid from the excised material within the bag 13. The end effector 1 is at least partially disposed inside the bag 13 to hold the excised material within the bag 13, thereby facilitating the handling of the excised material by other surgical instruments. The operating mechanism is located on the outside of the bag 13 and is detachably connected to the end effector 1. By manipulating the operating mechanism, the end effector 1 can perform grasping or releasing actions.

[0056] When using the surgical retrieval instrument, the container 11 is placed in the abdominal cavity. When the actuation handle 15 is operated, the push rod 14 moves in the opposite direction to the third direction. The two elastic support arms 12 extend out of the container 11 and gradually open, thereby unfolding the bag body 13 in the abdominal cavity. Then, the actuation handle 15 is operated, and the push rod 14 moves in the third direction, thereby causing the two elastic support arms 12 to be stored in the container 11, so that the two elastic support arms 12 are separated from the bag body 13. Then, the container 11 is removed from the abdominal cavity, and the bag body 13 is placed in the abdominal cavity.

[0057] After the bag 13 is placed in the abdominal cavity, the operating mechanism and the end effector 1 are assembled. Once assembled, the operating mechanism can be manipulated to drive the end effector 1 to perform grasping or releasing actions to hold or release the excised material in the bag 13. After the excised material has been processed, the operating mechanism and the end effector 1 are disassembled. The operating mechanism is then removed from the abdominal cavity, while the end effector 1, which is located inside the bag 13, does not need to be removed but is pulled out of the body along with the bag 13.

[0058] When the surgical instrument is removed, the end actuator 1 is placed inside the bag 13 and pulled out of the body along with the bag 13. This prevents the tissue fluid adhering to the end actuator 1 from contaminating other tissues inside the abdominal cavity, thus avoiding the risk of contamination spread.

[0059] When assembling or disassembling the end effector 1 and the operating mechanism, the efficiency and ease of assembly or disassembly are particularly important. To facilitate the assembly and disassembly of the end effector 1 and the operating mechanism, this embodiment provides a connecting mechanism for detachably connecting the operating mechanism and the end effector 1. Specifically, the connecting mechanism in this embodiment includes a locking member 8, an actuation mechanism, and a locking arm.

[0060] The locking element 8 is disposed on the operating mechanism and has an unlocked position and a locked position. The actuating mechanism is disposed on the operating mechanism and is connected to the locking element 8. The movement of the actuating mechanism can drive the locking element 8 to move, so that the locking element 8 switches between the unlocked position and the locked position.

[0061] A locking arm is disposed on one of the end effector 1 and the operating mechanism and can be detachably engaged with the other. That is, the locking arm can be disposed on either the end effector 1 or the operating mechanism. In practical applications, the specific position of the locking arm can be designed according to usage requirements, processing requirements, etc. When the locking arm is disposed on the end effector 1, the dimensions of the locking arm are set to be suitable for engagement with the operating mechanism; when the locking arm is disposed on the operating mechanism, the dimensions of the locking arm are set to be suitable for engagement with the end effector 1.

[0062] When locking member 8 is in the unlocked position, locking arm disengages from the other of the aforementioned components, thereby unlocking end effector 1 from operating mechanism. In other words, if locking arm is disposed on end effector 1 and detachably engaged with operating mechanism, locking arm disengages from operating mechanism when locking member 8 is in the unlocked position. If locking arm is disposed on operating mechanism and detachably engaged with end effector 1, locking arm disengages from end effector 1 when locking member 8 is in the unlocked position, thereby releasing the lock between end effector 1 and operating mechanism, allowing end effector 1 to be disassembled from operating mechanism.

[0063] When the locking member 8 is in the locked position, it constrains the locking arm so that it engages with the other of the aforementioned components, thereby locking the end effector 1 with the operating mechanism. In other words, if the locking arm is disposed on the end effector 1 and detachably engaged with the operating mechanism, then when the locking member 8 is in the locked position, it constrains the locking arm so that it engages with the operating mechanism. If the locking arm is disposed on the operating mechanism and detachably engaged with the end effector 1, then when the locking member 8 is in the locked position, it constrains the locking arm so that it engages with the end effector 1, thereby enabling the locking arm to lock the end effector 1 with the operating mechanism.

[0064] When locking member 8 is in the unlocked position, the locking arm is disengaged from the other one mentioned above; that is, when locking member 8 is in the unlocked position, locking member 8 is separated from the other one mentioned above, or the locking member is in a separable state but not separated from the other one mentioned above. When locking member 8 is in the locked position, locking member 8 constrains the locking arm so that the locking arm engages with the other one mentioned above; that is, when locking member 8 is in the locked position, under the constraint of locking member 8, the locking arm is connected to the other one mentioned above and cannot be separated. Specifically:

[0065] Locking member 8 is separated from the other one mentioned above; that is, when locking member 8 is in the unlocked position, a part of the locking arm is separated from a part of the other one mentioned above. At this time, driving locking member 8 to move to the locked position, locking member 8 acts on the locking arm, causing the locking arm to move towards the other one mentioned above. Under the constraint of locking member 8, a part of the locking arm is tightly fitted with a part of the other one mentioned above and cannot produce relative displacement, thereby achieving the locking of end actuator 1 and operating mechanism.

[0066] Locking member 8 is in a separable but not completely separated from the other one mentioned above. That is, when locking member 8 is in the unlocked position, a portion of the locking arm is in contact with a portion of the other one mentioned above, but not tightly, and the two can move relative to each other. At this time, driving locking member 8 to move to the locked position, locking member 8 constrains the locking arm so that a portion of the locking arm is tightly contacted with a portion of the other one mentioned above and cannot produce relative displacement, thereby achieving the locking of end actuator 1 and operating mechanism. When locking member 8 is in the unlocked position, manipulating the other one mentioned above causes it to move relative to the locking arm and separate from the locking arm, achieving the disassembly of end actuator 1 and operating mechanism. During the movement of the other one mentioned above relative to the locking arm, the locking arm does not deflect significantly, and a portion of the locking arm is substantially in contact with a portion of the other one mentioned above. Locking arm movement or displacement includes, but is not limited to, locking arm deflection.

[0067] Optionally, the locking arm is elastic. When the locking member 8 is in the unlocked position, the locking arm relies on its own elasticity to laterally deflect to separate from the other one mentioned above. At this time, driving the locking member 8 to move to the locked position, the locking member 8 acts on the locking arm, causing the locking arm to laterally deflect towards the other one mentioned above. Under the constraint of the locking member 8, the locking arm is tightly fitted with the other one mentioned above and cannot deflect laterally, thus achieving the locking of the end actuator 1 and the operating mechanism. When the locking member 8 is in the unlocked position, if the locking arm cannot rely on its own elasticity to laterally deflect to separate from the other one mentioned above, that is, when the locking member 8 is in the unlocked position, the locking arm is in a fitted state with the other one mentioned above. At this time, manipulating the other one to separate it from the locking arm can achieve the disassembly of the end actuator 1 and the operating mechanism. During this process, the locking arm does not deflect significantly. When the locking member 8 is in the locked position, the locking member 8 constrains the locking arm so that the locking arm is tightly fitted with the other one mentioned above and cannot deflect laterally, thus achieving the locking of the end actuator 1 and the operating mechanism.

[0068] This embodiment achieves a stable and reliable lock between the end effector 1 and the operating mechanism by using a locking element 8 in conjunction with a locking arm. Furthermore, locking and unlocking can be accomplished simply by moving the locking element 8 via an actuation mechanism, making the assembly of surgical instruments simple, reliable, and efficient. In this embodiment, the actuation mechanism is located within the operating mechanism, allowing the surgeon to lock and unlock the end effector 1 and the operating mechanism from the outside of the bag 13, improving operational convenience and reducing operational difficulty.

[0069] refer to Figure 4-5 In this embodiment, the operating mechanism includes a lever assembly 2 and a handle assembly. The handle assembly is located at the proximal end of the lever assembly 2, and the end effector 1 is located at the distal end of the lever assembly 2. The end effector 1 is detachably connected to the lever assembly 2. By manipulating the handle assembly, the end effector 1 can perform a grasping or releasing action (described in detail below).

[0070] refer to Figure 5 The end effector 1 includes a clamping mechanism 100 and a sleeve 110 at least partially fitted onto the clamping mechanism 100. The clamping mechanism 100 is disposed inside the bag body 13 to clamp the cut-out material inside the bag body 13. The sleeve 110 is sealed to the bag body 13. Optionally, the sealing connection is made by adhesive bonding, so that the clamping mechanism 100 is isolated from the outside of the bag body 13.

[0071] refer to Figure 6-10 The lever assembly 2 includes an operating lever 200 and a sleeve 210 sleeved on the operating lever 200. The sleeve 210 is detachably connected to the sleeve 110, and the operating lever 200 is inserted into the sleeve 110 and detachably connected to the clamping mechanism 100.

[0072] The locking arms include a first locking arm 6 and a second locking arm 7. The first locking arm 6 is disposed in one of the sleeve 110 and the tube 210 and is detachably engaged with the other. The second locking arm 7 is disposed in one of the clamping mechanism 100 and the operating lever 200 and is detachably engaged with the other. In practical applications, the specific positions of the first locking arm 6 and the second locking arm 7 can be designed according to usage requirements, processing requirements, etc.

[0073] When the locking member 8 is in the unlocked position, the first locking arm 6 disengages from its corresponding counterpart to allow the sleeve 110 to disengage from the tube 210, and the second locking arm 7 disengages from its corresponding counterpart to allow the clamping mechanism 100 to disengage from the operating lever 200. In other words, if the first locking arm 6 is located on the sleeve 110, then when the locking member 8 is in the unlocked position, the first locking arm 6 disengages from the sleeve 210. If the first locking arm 6 is located on the tube 210, then when the locking member 8 is in the unlocked position, the first locking arm 6 disengages from the sleeve 110. If the second locking arm 7 is located on the clamping mechanism 100, then when the locking member 8 is in the unlocked position, the second locking arm 7 disengages from the operating lever 200. If the second locking arm 7 is located on the operating lever 200, then when the locking member 8 is in the unlocked position, the second locking arm 7 disengages from the clamping mechanism 100.

[0074] When the locking member 8 is in the locked position, the first locking arm 6 is constrained by the locking member 8 and engages with its corresponding counterpart to lock the sleeve 110 and the tube 210, and the second locking arm 7 is constrained by the locking member 8 and engages with its corresponding counterpart to lock the clamping mechanism 100 and the operating lever 200. In other words, if the first locking arm 6 is located on the sleeve 110, then when the locking member 8 is in the locked position, the first locking arm 6 is constrained by the locking member 8 and engages with the tube 210. If the first locking arm 6 is located on the tube 210, then when the locking member 8 is in the locked position, the first locking arm 6 is constrained by the locking member 8 and engages with the sleeve 110. If the second locking arm 7 is located on the clamping mechanism 100, then when the locking member 8 is in the locked position, the second locking arm 7 is constrained by the locking member 8 and engages with the operating lever 200. If the second locking arm 7 is located on the operating lever 200, then when the locking member 8 is in the locked position, the second locking arm 7 is constrained by the locking member 8 and engages with the clamping mechanism 100.

[0075] In this embodiment, the first locking arm 6 is disposed on the sleeve 210 and its size is suitable for engaging with the sleeve 110, and the second locking arm 7 is disposed on the clamping mechanism 100 and its size is suitable for engaging with the operating lever 200.

[0076] When the locking member 8 is in the unlocked position, the first locking arm 6 disengages from the sleeve 110 to allow the sleeve 110 to disengage from the tube 210. When the locking member 8 is in the locked position, the first locking arm 6 is constrained by the locking member 8 and engaged with the sleeve 110 to lock the sleeve 110 and the tube 210. Specifically: when the locking member 8 is in the unlocked position, the first locking arm 6 is in a separated state from the sleeve 110, or in a separable state but not separated.

[0077] If the first locking arm 6 is separated from the sleeve 110, the driving locking member 8 moves to the locking position. The locking member 8 acts on the first locking arm 6, causing the first locking arm 6 to move toward the sleeve 110. Under the constraint of the locking member 8, a part of the first locking arm 6 is tightly fitted with a part of the sleeve 110 and cannot produce relative displacement, thereby achieving the locking of the sleeve 110 and the sleeve 210.

[0078] If the first locking arm 6 and the sleeve 110 are in a separable but not separated state, that is, when the locking member 8 is in the unlocked position, a part of the first locking arm 6 and a part of the sleeve 110 are in a contacting but not tightly contacting state, and the two can move relative to each other, then the locking member 8 is driven to move to the locked position. The locking member 8 constrains the first locking arm 6 so that a part of the first locking arm 6 and a part of the sleeve 110 are tightly contacted and cannot produce relative displacement, thereby locking the sleeve 110 and the tube 210. When the locking member 8 is in the unlocked position, manipulating the sleeve 110 causes the sleeve 110 to move relative to the first locking arm 6 and separate from the first locking arm 6, thereby disassembling the sleeve 110 and the tube 210. During the movement of the sleeve 110 relative to the first locking arm 6, the first locking arm 6 does not deflect significantly, and a part of the first locking arm 6 and a part of the sleeve 110 are generally in contact.

[0079] Optionally, the first locking arm 6 is elastic. When the locking member 8 is in the unlocked position, the first locking arm 6 is laterally deflected by its own elasticity to separate from the sleeve 110. At this time, the driving locking member 8 is moved to the locked position, and the locking member 8 acts on the first locking arm 6, causing the first locking arm 6 to be laterally deflected toward the sleeve 110. The locking member 8 also constrains the first locking arm 6, so that a part of the first locking arm 6 is tightly fitted with a part of the sleeve 110, and the first locking arm 6 cannot be laterally deflected, thereby achieving the locking of the sleeve 110 and the tube 210.

[0080] When the locking member 8 is in the unlocked position, if the first locking arm 6 cannot be laterally deflected to separate from the sleeve 110 due to its own elasticity, that is, when the locking member 8 is in the unlocked position, the first locking arm 6 and the sleeve 110 are in a fitted state. At this time, manipulating the sleeve 110 causes the sleeve 110 to move relative to the first locking arm 6 and separate from the first locking arm 6, thereby disassembling the sleeve 110 from the tube 210. During this process, the first locking arm 6 does not deflect significantly. When the locking member 8 is in the locked position, the locking member 8 constrains the first locking arm 6 so that the first locking arm 6 is tightly fitted to the sleeve 110 and cannot be laterally deflected, thereby locking the sleeve 110 and the tube 210.

[0081] When the locking member 8 is in the unlocked position, the second locking arm 7 disengages from the operating lever 200 to allow the clamping mechanism 100 to disengage from the operating lever 200. When the locking member 8 is in the locked position, the second locking arm 7 is constrained by the locking member 8 and engaged with the operating lever 200 to lock the clamping mechanism 100 to the operating lever 200. Specifically: when the locking member 8 is in the unlocked position, the second locking arm 7 is in a separated state from the operating lever 200, or in a separable state but not separated.

[0082] If the second locking arm 7 is separated from the operating lever 200, the driving locking member 8 moves to the locking position. The locking member 8 acts on the second locking arm 7, causing the second locking arm 7 to move toward the operating lever 200. Under the constraint of the locking member 8, a part of the second locking arm 7 is tightly fitted with a part of the operating lever 200 and cannot produce relative displacement, thereby achieving the locking of the clamping mechanism 100 and the operating lever 200.

[0083] If the second locking arm 7 and the sleeve 110 are in a separable but not separated state, that is, when the locking member 8 is in the unlocked position, a part of the second locking arm 7 and a part of the sleeve 110 are in a contacting but not tightly contacting state, and the two can move relative to each other, then the locking member 8 is driven to move to the locked position. The locking member 8 constrains the second locking arm 7 so that a part of the second locking arm 7 is tightly contacted with a part of the operating lever 200 and cannot produce relative displacement, thereby achieving the locking of the clamping mechanism 100 and the operating lever 200. When the locking member 8 is in the unlocked position, manipulating the operating lever 200 causes the operating lever 200 to move relative to the second locking arm 7 and separate from the second locking arm 7, thereby achieving the disassembly of the clamping mechanism 100 and the operating lever 200. During the movement of the operating lever 200 relative to the second locking arm 7, the second locking arm 7 does not deflect significantly, and a part of the second locking arm 7 and a part of the operating lever 200 are generally in contact.

[0084] Optionally, the second locking arm 7 is elastic. When the locking member 8 is in the unlocked position, the second locking arm 7 is laterally deflected by its own elasticity to separate from the operating lever 200. At this time, the driving locking member 8 is moved to the locked position, and the locking member 8 acts on the second locking arm 7, causing the second locking arm 7 to be laterally deflected toward the operating lever 200. The locking member 8 also constrains the second locking arm 7, so that a part of the second locking arm 7 is tightly fitted with a part of the operating lever 200, and the second locking arm 7 cannot be laterally deflected, thereby achieving the locking of the clamping mechanism 100 and the operating lever 200.

[0085] When the locking member 8 is in the unlocked position, if the second locking arm 7 cannot be laterally deflected to separate from the operating lever 200 due to its own elasticity, that is, when the locking member 8 is in the unlocked position, the second locking arm 7 and the operating lever 200 are in a contact state. At this time, manipulating the operating lever 200 causes the operating lever 200 to move relative to the second locking arm 7 and separate from the second locking arm 7, thereby disassembling the clamping mechanism 100 from the operating lever 200. During this process, the second locking arm 7 does not deflect significantly. When the locking member 8 is in the locked position, the locking member 8 constrains the second locking arm 7 so that the second locking arm 7 is tightly contacted with the operating lever 200 and cannot be laterally deflected, thereby locking the clamping mechanism 100 from the operating lever 200.

[0086] Preferably, in this embodiment, the first locking arm 6 is elastic, and when the locking member 8 is in the unlocked position, the first locking arm 6 is laterally deflected by its own elasticity to separate from the sleeve 110.

[0087] Preferably, in this embodiment, the second locking arm 7 is elastic, and when the locking member 8 is in the unlocked position, the second locking arm 7 is laterally deflected by its own elasticity to separate from the operating lever 200.

[0088] When the locking member 8 is in the unlocked position, the locking member 8 can avoid the first locking arm 6 and the second locking arm 7, so that the first locking arm 6 can be laterally deflected to allow the sleeve 110 to disengage from the sleeve 210, and the second locking arm 7 can be laterally deflected to allow the clamping mechanism 100 to disengage from the operating lever 200, thereby enabling the end actuator 1 to be disassembled from the lever assembly 2.

[0089] When the locking member 8 is in the locked position, the first locking arm 6 is constrained by the locking member 8 and cannot be deflected laterally. At the same time, the second locking arm 7 is constrained by the locking member 8 and cannot be deflected laterally. Thus, the first locking arm 6 locks the sleeve 110 and the tube 210, and the second locking arm 7 locks the clamping mechanism 100 and the operating rod 200, so that the end actuator 1 and the rod assembly 2 are assembled and will not be separated, so that the surgical instrument can be used normally.

[0090] In this embodiment, the connecting mechanism includes two first locking arms 6 and two second locking arms 7. In some alternative embodiments, the connecting mechanism includes at least two first locking arms 6 and at least two second locking arms 7. The first locking arms 6 and the second locking arms 7 are offset in the circumferential direction.

[0091] refer to Figure 6-8 10. Two first locking arms 6 are arranged opposite each other along a first direction. The proximal end of each first locking arm 6 is connected to the sleeve 210, and the distal end extends in the direction toward the clamping mechanism 100. The distal end of each first locking arm 6 is movable.

[0092] refer to Figure 6 , 9 Two second locking arms 7 are arranged opposite each other along a second direction. The distal end of each second locking arm 7 is connected to the clamping mechanism 100, and the proximal end extends in the direction toward the handle assembly. The proximal end of each second locking arm 7 is movable.

[0093] Both the first and second directions are perpendicular to the axial direction, and the first and second directions are not parallel. Preferably, in this embodiment, the first and second directions are perpendicular to each other. Figure 7 The placement angle of surgical instruments is for reference. The first direction is perpendicular to the paper, and the second direction is up and down.

[0094] refer to Figure 7-8 The sleeve 110 includes a first receiving portion 113 and a second receiving portion 114, with the first receiving portion 113 disposed at the proximal end of the second receiving portion 114. The distal end of the first receiving portion 113 has a stop portion 115. The distal end of the sleeve 210 is inserted into the first receiving portion 113 from the proximal end and abuts against the stop portion 115 at the distal end of the first receiving portion 113 to accurately limit the installation of the sleeve 210. A first locking arm 6 on the sleeve 210 is located in the first receiving portion 113. A second locking arm 7 is disposed in the second receiving portion 114. An operating lever 200 is inserted from the proximal end of the first receiving portion 113 between the two second locking arms 7 to engage with the clamping mechanism 100.

[0095] refer to Figure 7-10 The locking element 8 is disposed between the operating lever 200 and the sleeve 210. Specifically, the locking element 8 is sleeved on the outside of the operating lever 200, and the sleeve 210 is sleeved on the outside of the locking element 8. In this embodiment, the second locking arm 7 is disposed on the distal side of the first locking arm 6, and the locking position of the locking element 8 is distal to its unlocked position. The actuation mechanism can drive the locking element 8 to move axially from the locked position to the proximal end to the unlocked position, and the actuation mechanism can also drive the locking element 8 to move axially from the unlocked position to the distal end to the locked position.

[0096] When the locking member 8 is in the locked position, it acts on the first locking arm 6 and the second locking arm 7 to restrain them. When the locking member 8 is in the unlocked position, it avoids the first locking arm 6 and the second locking arm 7. Specifically:

[0097] refer to Figure 8-11 When the locking member 8 is in the locked position, the distal end of the locking member 8 moves to the second locking arm 7 so that the locking member 8 can act on the first locking arm 6 and the second locking arm 7. Specifically, at this time, the outer wall of the locking member 8 abuts against the first locking arm 6 and the inner wall of the locking member 8 abuts against the second locking arm 7. Thus, the locking member 8 restricts the lateral deflection of the first locking arm 6 and the second locking arm 7.

[0098] refer to Figure 11-12 The locking member 8 is provided with two clearance slots 810, which are arranged opposite to each other along a first direction. When the locking member 8 is in the unlocked position, the locking member 8 moves to the proximal side of the two second locking arms 7 to avoid the two second locking arms 7, so that the two second locking arms 7 are no longer constrained and can be laterally deflected. At this time, one of the clearance slots 810 of the locking member 8 is located at one of the first locking arms 6, and the other clearance slot 810 is located at the other first locking arm 6, thereby avoiding the two first locking arms 6 and allowing the two first locking arms 6 to be no longer constrained and can be laterally deflected.

[0099] Because the first locking arm 6 and the second locking arm 7 are offset in the circumferential direction, the clearance groove 810 will not interfere with the locking of the second locking arm 7. Specifically, when the locking member 8 is in the locked position, the clearance groove 810 and the second locking arm 7 are offset in the circumferential direction, and the locking member 8 can abut against the second locking arm 7 in the second direction to constrain the second locking arm 7. Through the circumferential offset of the first locking arm 6 and the second locking arm 7 and the clearance groove 810, the distance the locking member 8 moves between the locked and unlocked positions is shorter, meaning the axial movement space required for the locking member 8 in the rod assembly is smaller, thus helping to reduce the overall size of the device.

[0100] In some alternative implementations, the unlocked position of the locking member 8 is located near the first locking arm 6, so that when the locking member 8 is in the unlocked position, the distal end of the locking member 8 is near the first locking arm 6, that is, both the first locking arm 6 and the second locking arm 7 are located far from the locking member 8 and are no longer constrained by the locking member 8.

[0101] refer to Figure 9 In this embodiment, each first locking arm 6 has a first latching portion 610 at its distal end, as shown in the reference. Figure 13The inner wall of the sleeve 110 is provided with a circumferentially extending first groove 111. The size of the first groove 111 is set to receive the first latching portion 610 of the first locking arm 6. When the sleeve 210 is inserted into the end actuator 1, each first latching portion 610 can be engaged in the first groove 111. When the locking member 8 is in the locked position, each first latching portion 610 is engaged in the first groove 111, making the locking between the sleeve 210 and the sleeve 110 more secure.

[0102] In some alternative embodiments, the first locking arm 6 has a first abutment surface, and the inner wall of the sleeve 110 has a second abutment surface. When the first locking arm 6 is engaged with the sleeve 110, the first abutment surface abuts against the second abutment surface. At least one of the first and second abutment surfaces has been surface-treated to make its surface rougher, thereby increasing the friction between the first and second abutment surfaces, thus making the locking of the sleeve 210 and the sleeve 110 more secure.

[0103] refer to Figure 7-10 In this embodiment, each second locking arm 7 has a second engaging portion 710 at its proximal end, and the outer wall of the operating rod 200 has a circumferentially extending second groove 202. The size of the second groove 202 is set to receive the second engaging portion 710 of the second locking arm 7. When the operating rod 200 is inserted into the end actuator 1, each second engaging portion 710 can be engaged into the second groove 202. When the locking member 8 is in the locked position, each second engaging portion 710 is engaged into the second groove 202, making the locking of the operating rod 200 and the clamping mechanism 100 more secure.

[0104] In some alternative embodiments, the second locking arm 7 has a third abutment surface, and the outer wall of the operating lever 200 has a fourth abutment surface. When the second locking arm 7 engages with the outer wall of the operating lever 200, the third abutment surface abuts against the fourth abutment surface. At least one of the third and fourth abutment surfaces has been surface-treated to make its surface rougher, thereby increasing the friction between the third and fourth abutment surfaces, thus making the locking of the operating lever 200 and the clamping mechanism 100 more secure.

[0105] refer to Figure 6 The sleeve 210 is equipped with a guide section, see reference. Figure 13-14The sleeve 110 is provided with a limiting part, which cooperates with the guide part to limit the sleeve 210. Specifically, the guide part is a protrusion 211, and two protrusions 211 are provided on the outer wall of the sleeve 210. The limiting part is a groove 112, and two grooves 112 are provided on the inner wall of the sleeve 110, each groove 112 extending axially. During the insertion of the sleeve 210 into the sleeve 110, one of the protrusions 211 slides in one of the grooves 112, and the other protrusion 211 slides in the other groove 112. Thus, the cooperation of the guide part and the limiting part can accurately guide the installation of the sleeve 110 and the sleeve 210, so that the first locking arm 6 and the second locking arm 7 can be installed in a staggered manner, ensuring the accuracy of the installation position, thereby improving installation efficiency and reducing installation difficulty. After the sleeve 110 and the sleeve 210 are installed, the groove 112 has a circumferential limiting effect on the protrusion 211, so that the sleeve 110 and the sleeve 210 are circumferentially fixed, and the sleeve 210 and the sleeve 110 can rotate synchronously.

[0106] refer to Figure 7-8 , Figure 10 The clamping mechanism 100 includes a gripper assembly and a movable member 103, which are drivably connected. A second locking arm 7 is disposed on the movable member 103. When the locking member 8 is in the locked position, it cooperates with the second locking arm 7 to lock the operating lever 200 to the movable member 103. The axial movement of the operating lever 200 can drive the movable member 103 to move axially, thereby driving the gripper assembly to open or close, so that the gripper assembly performs a release action or a gripping action.

[0107] Continue to refer to Figure 7-8 10. The gripper assembly includes a first gripper 101 and a second gripper 102 pivotally connected. The first gripper 101 is connected to the sleeve 110, and the second gripper 102 is drivably connected to the moving member 103. Specifically, the moving member 103 has a groove 1031, and the second gripper 102 is provided with a sliding shaft 1021, which is slidably disposed in the groove 1031. When the locking member 8 is in the locked position, the operating lever 200 moves axially, causing the moving member 103 to move axially, so that the sliding shaft 1021 slides in the groove 1031, thereby causing the second gripper 102 to rotate relative to the first gripper 101, so that the gripper assembly opens or closes.

[0108] refer to Figure 4-5 The handle assembly includes a fixed handle 3 and a movable handle 4. The movable handle 4 is rotatably connected to the fixed handle 3 via a pin 5. The fixed handle 3 is sleeved on the operating lever 200, which is capable of rotating relative to the fixed handle 3 about its longitudinal axis and moving axially.

[0109] The movable handle 4 is rotatably connected to the operating lever 200, and the movable handle 4 and the operating lever 200 are axially fixed. For details, please refer to... Figure 5 and Figure 15 A spherical stop block 201 is provided at the proximal end of the operating lever 200. The movable handle 4 includes a first main body 410, a first gripping part 420 for user operation provided at one end of the first main body 410, and a first mounting part 430 provided at the other end of the first main body 410. The first mounting part 430 is provided with a stop groove 431, and the inner wall of the stop groove 431 is an arc surface that fits with the stop block 201. The stop block 201 at the proximal end of the operating lever 200 is located in the stop groove 431 of the movable handle 4, and the stop groove 431 encloses the stop block 201, allowing the stop block 201 to rotate around the longitudinal axis of the operating lever 200 within the stop groove 431. The stop groove 431 also limits the stop block 201 in the longitudinal axis direction of the operating lever 200, thus preventing relative movement between the stop block 201 and the stop groove 431 in the longitudinal axis direction of the operating lever 200. This allows the operating lever 200 to rotate relative to the movable handle 4 about its longitudinal axis. Simultaneously, by driving the movable handle 4 to rotate relative to the fixed handle 3, the operating lever 200 can be axially moved relative to the sleeve 210. The operating lever 200 can drive the moving part 103 to move, thereby opening or closing the gripper assembly, causing the gripper assembly to perform a release or gripping action. Specifically:

[0110] by Figure 5 The placement angle of surgical instruments is for reference only. Figure 5 , Figure 8 and Figure 10 When the gripper assembly is in the closed state, manipulating the movable handle 4 to rotate it counterclockwise drives the operating lever 200 to move distally, causing the moving member 103 to move distally and rotate the second gripper 102 clockwise, thereby opening the gripper assembly. When the gripper assembly is in the open state, manipulating the movable handle 4 to rotate it clockwise drives the operating lever 200 to move proximally, causing the moving member 103 to move proximally and rotate the second gripper 102 counterclockwise, thereby closing the gripper assembly.

[0111] refer to Figure 8 and Figure 10 When the operating lever 200 moves to the distal end, the operating lever 200 drives the second locking arm 7 to move to the distal end relative to the locking member 8 within the range of action of the locking member 8. The second locking arm 7 will never disengage from the locking member 8, so that the operating lever 200 and the moving member 103 will not separate during the use of the surgical instrument.

[0112] refer to Figure 15-16The fixed handle 3 includes a second main body 310, a second gripping part 320 for user operation disposed at one end of the second main body 310, and a second mounting part 330 disposed at the other end of the second main body 310. The second mounting part 330 includes a seat 331 and a connecting sleeve 333. The rod assembly 2 also includes a mounting tube 220, which is disposed near the end of the sleeve 210 and connected to the sleeve 210. The seat 331 is provided with a protrusion 332, which passes through the mounting tube 220, and the mounting tube 220 can rotate relative to the protrusion 332. The connecting sleeve 333 is sleeved on the outer wall of the mounting tube 220 and is connected to the seat 331 to make the installation of the mounting tube 220 and the seat 331 more stable, and the mounting tube 220 can rotate relative to the connecting sleeve 333.

[0113] Continue to refer to Figure 15-16 In this embodiment, the actuation mechanism is located at the proximal end of the lever assembly 2, and includes an actuating element 9 and an elastic element 10. The actuating element 9 is connected to the locking element 8 to drive the locking element 8 from the locked position to the unlocked position, and the elastic element 10 biases the locking element to the locked position. Specifically:

[0114] Actuator 9 is fitted onto mounting tube 220. A connecting post 910 extends from the inner wall of actuator 9. A U-shaped hole 221 extending axially is provided on mounting tube 220, and a connecting hole is provided on locking member 8. Connecting post 910 passes through U-shaped hole 221 and engages in connecting hole, connecting actuator 9 and locking member 8. Manipulating actuator 9 causes it to move axially proximally, and connecting post 910 moves axially within U-shaped hole 221, causing locking member 8 to move axially proximally, thus moving locking member 8 to the unlocked position. Spring can be used as elastic member 10. Elastic member 10 is fitted onto the outside of mounting tube 220, with one end abutting against the end face of connecting sleeve 333, and the other end abutting against the distal inner wall of actuator 9. By providing elastic member 10, when the doctor pulls actuator 9 proximally to the unlocked position, elastic member 10 is compressed and stores energy. When the doctor releases the actuator 9, the elastic element 10 releases energy, causing the locking element 8 to move to the locking position at the distal end.

[0115] In some alternative embodiments, the actuation mechanism includes an actuator 9 connected to a locking member 8 to drive the locking member 8 to switch between an unlocked position and a locked position. Specifically: manipulating the actuator 9 causes it to move axially proximally to drive the locking member 8 to the unlocked position. Manipulating the actuator 9 causes it to move axially distally to drive the locking member 8 to the locked position.

[0116] When the doctor rotates the actuator 9 to make it rotate around the axis, the actuator 9, under the action of the connecting column 910, drives the mounting tube 220 and the locking member 8 to rotate. The sleeve 210 rotates under the drive of the mounting tube 220. Because the protrusion 211 of the sleeve 210 cooperates with the groove 112 of the sleeve 110, the sleeve 210 and the sleeve 110 cannot rotate relative to each other. Therefore, the sleeve 110 rotates under the drive of the sleeve 210. The rotation of the sleeve 110 drives the clamping mechanism 100 to rotate, and the rotation of the clamping mechanism 100 drives the operating rod 200 to rotate. That is, by rotating the actuator 9, the end effector 1 can be rotated, making it convenient for the doctor to adjust the angle of the end effector 1, thus facilitating its use. The bag body 13 of the surgical retrieval device is a flexible bag body 13, which allows the rotation of the end effector 1.

[0117] The following will describe the usage and principle of the surgical retrieval device in this embodiment:

[0118] When in use, the bag body 13 is placed in the abdominal cavity, and the excised material separated from the normal tissue is placed into the bag body 13 through the bag opening 1310. Then the bag opening 1310 of the bag body 13 is pulled out of the abdominal cavity.

[0119] After the bag opening 1310 of the bag body 13 is pulled out of the abdominal cavity, the rod assembly 2 is inserted into the abdominal cavity, while the actuator 9 and handle assembly are placed outside the abdominal cavity. At this time, an ordinary clamp or other instrument can be used to fix the end effector 1 inside the abdominal cavity. Then, the actuator 9 is pulled proximally, causing the locking member 8 to move to the unlocked position. The sleeve 210 is then aligned with the sleeve 110, so that the protrusion 211 of the sleeve 210 slides in the groove 112 of the sleeve 110, thereby inserting the sleeve 210 into the sleeve. In the sleeve 110, the first locking arm 6 is located in the first receiving part 113 of the sleeve 110. The operating rod 200 is inserted between the two second locking arms 7. The actuator 9 is released. Under the action of the elastic member 10, the locking member 8 moves to the locking position. The locking member 8 cooperates with the first deflection arm to lock the sleeve 210 and the sleeve 110. At the same time, the locking member 8 cooperates with the second deflection arm to lock the operating rod 200 and the moving member 103. At this time, the rod assembly 2 of the surgical instrument and the end effector 1 are assembled.

[0120] After the rod body assembly 2 and the end effector 1 are assembled, the movable handle 4 is actuated to rotate relative to the fixed handle 3 so that the gripper assembly can grasp the excised material in the bag body 13. With the assistance of the surgical instruments in this embodiment, other surgical instruments are used to process the excised material and remove it from the body.

[0121] After the excised tissue is removed from the body, other surgical instruments and the shaft assembly 2 of the surgical instrument in this embodiment are removed from the body. In this embodiment, the shaft assembly 2 is removed by pulling the actuator 9 proximally, causing the locking member 8 to move to the unlocked position, then disassembling the shaft assembly 2 from the end effector 1, and then removing the shaft assembly 2 from the abdominal cavity.

[0122] After the rod assembly 2 is removed from the abdominal cavity, the bag body 13 is pulled out of the abdominal cavity, and the end actuator 1 set on the bag body 13 is also taken out of the body.

[0123] In summary, in this embodiment, the end effector 1 of the surgical instrument and the operating mechanism are detachably connected. When the surgical instrument is removed, the end effector 1 does not need to be removed from the bag but is pulled out of the body along with the bag 13. The tissue fluid contaminated with the end effector 1 will not contaminate the inside of the abdominal cavity, thus avoiding the risk of contamination spreading.

[0124] In this embodiment, a connecting mechanism is provided to lock the end effector 1 to the operating mechanism, enabling a stable and reliable lock between the end effector 1 and the operating mechanism. Furthermore, locking and unlocking can be achieved simply by moving the locking member 8 via the actuator 9, making the assembly of surgical instruments simple, reliable, and highly efficient.

[0125] In this embodiment, the actuation mechanism is located on the operating mechanism, so that the doctor can lock and unlock the end effector 1 and the operating mechanism from the outside of the abdominal cavity through the actuation mechanism, which improves convenience and reduces the difficulty of operation.

[0126] 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.

[0127] 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, The device includes a bag body and surgical instruments, the surgical instruments comprising an operating mechanism, an end effector, and a connecting mechanism; the end effector is sealed to the bag body and at least partially disposed inside the bag body, the operating mechanism is located outside the bag body and detachably connected to the end effector via the connecting mechanism, the connecting mechanism comprising: A locking element is disposed on the operating mechanism, the locking element having an unlocked position and a locked position; An actuating mechanism, disposed on the operating mechanism, is connected to the locking member, and drives the locking member to switch between the unlocked position and the locked position; and A locking arm, disposed on the end effector and detachably engaged with the operating mechanism, wherein when the locking member is in the unlocked position, the locking arm disengages from the operating mechanism to unlock the end effector from the operating mechanism; and when the locking member is in the locked position, the locking member constrains the locking arm to engage with the operating mechanism, thereby locking the end effector from the operating mechanism; or... The locking arm is disposed on the operating mechanism and detachably engaged with the end effector. When the locking member is in the unlocked position, the locking arm disengages from the end effector to unlock the end effector from the operating mechanism. When the locking member is in the locked position, the locking member constrains the locking arm to engage with the end effector, thereby locking the end effector from the operating mechanism.

2. The surgical retrieval device according to claim 1, characterized in that, The actuation mechanism includes an actuating element and an elastic element. The actuating element is connected to the locking element to drive the locking element to move from the locked position to the unlocked position, and the elastic element biases the locking element to the locked position.

3. The surgical retrieval device according to claim 1, characterized in that, The operating mechanism includes a rod assembly, the end effector includes a clamping mechanism and a sleeve fitted onto the clamping mechanism, the rod assembly includes an operating rod and a sleeve fitted onto the operating rod, the sleeve and the sleeve are detachably connected, and the clamping mechanism is detachably connected to the operating rod.

4. The surgical retrieval device according to claim 3, characterized in that, The clamping mechanism is located inside the bag body, and the sleeve is sealed to the bag body.

5. The surgical retrieval device according to claim 3, characterized in that, The locking arm includes a first locking arm and a second locking arm. The first locking arm is disposed on the sleeve and detachably engaged with the sleeve. The second locking arm is disposed on the clamping mechanism and detachably engaged with the operating lever. When the locking member is in the unlocked position, the first locking arm disengages from the sleeve, and the second locking arm disengages from the operating lever; When the locking member is in the locked position, the first locking arm is constrained by the locking member and engages with the sleeve, and the second locking arm is constrained by the locking member and engages with the operating lever.

6. The surgical retrieval device according to claim 5, characterized in that, The locking element is disposed between the operating lever and the sleeve. When the locking element is in the locked position, the outer wall of the locking element abuts against the first locking arm to constrain the first locking arm, and the inner wall of the locking element abuts against the second locking arm to constrain the second locking arm.

7. The surgical retrieval device according to claim 5, characterized in that, The first locking arm is detachably engaged with the inner wall of the sleeve, and the second locking arm is detachably engaged with the outer wall of the operating lever.

8. The surgical retrieval device according to claim 7, characterized in that, The clamping mechanism includes a gripper assembly and a movable member, the movable member being drivably connected to the gripper assembly; a second locking arm is disposed on the movable member; when the locking member is in the locked position, the operating lever moves axially to drive the movable member to move axially, so that the gripper assembly opens or closes.

9. The surgical retrieval device according to claim 3, characterized in that, The sleeve is provided with a guide portion, and the bushing is provided with a limiting portion. The limiting portion cooperates with the guide portion to limit the sleeve.

10. The surgical retrieval device according to claim 3, 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 application of force to the movable handle, the movable handle rotates relative to the fixed handle, causing the operating lever to move relative to the sleeve.

11. The surgical retrieval device according to claim 1, characterized in that, The actuation mechanism includes an actuator connected to the locking member to drive the locking member to switch between the unlocked position and the locked position.

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