Object taking spreader and object taking device

Abstract

The invention relates to the technical field of medical apparatus and instruments, and discloses a fetching spreader and a fetching device.The fetching spreader comprises a fetching bag opening control assembly, a fetching bag spreading control assembly, a main body, a spreading execution assembly and an instrument channel; the instrument channel penetrates through the main body, the multiple opening execution assemblies are arranged around the instrument channel, and the instrument channel is used for allowing instruments to enter the fetching bag from the outside; instruments such as a crushing instrument can enter the fetching bag through the instrument channel to crush the tumor in the fetching bag, an additional opening is not needed to enter the fetching bag, and operations including opening of the fetching bag, crushing of the tissue, taking out and the like are only needed to be performed from one opening, so that the situation that the complexity of an operation is increased due to cooperation of multiple instrument channels is avoided; the opening execution assembly achieves opening of the fetching bag through a mechanical structure, the fetching bag does not need to be inflated, the risk of air leakage does not exist, and use is more reliable.

Description

Technical Field

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

[0002] During laparoscopic surgery, it is necessary to remove tissue specimens such as tumors resected laparoscopically. When the tissue specimen is large, it needs to be pulverized before removal. In the prior art, such as the abdominal cavity insertion and double-tube sealing device for connecting a rigid catheter retrieval bag disclosed in CN210228209U, a tumor pulverization and removal scheme is disclosed. This scheme has the following drawbacks:

[0003] 1. Retrieving and crushing tumors using a retrieval bag requires three openings, and the operation involves multiple instrument channels, making the procedure complex.

[0004] 2. The retrieval bag needs to be inflated, which poses a risk of leakage and has limited reliability. Furthermore, the three openings in the retrieval bag during operation further increase the risk of leakage.

[0005] 3. After the retrieval bag is fully inflated, its position inside the abdomen is floating and it is easily deformed and cannot be fixed. There is a risk of tearing the retrieval bag during the process of crushing the tumor, causing the tumor tissue to leak out.

[0006] This application is filed to address the aforementioned deficiencies. Summary of the Invention

[0007] The purpose of this invention is to provide a retrieval expander that allows for tumor crushing and removal through a single opening, reducing operational complexity. The expander uses structural components to open the retrieval bag, solving the problems of air leakage and bag position fluctuation associated with traditional inflatable retrieval bag opening methods.

[0008] The present invention is achieved through the following technical solution.

[0009] The present invention provides a retrieval bag opening control component, a retrieval bag opening control component, a main body, an opening execution component, and a device channel;

[0010] The retrieval bag opening control component is used to open or close the retrieval bag opening;

[0011] The bag opening control component is used to control the switching of the opening execution component in different states;

[0012] The opening actuator is provided in several groups and is set on the main body. The instrument channel runs through the main body and the several groups of opening actuators are arranged around the instrument channel. The instrument channel is used to allow the instrument to enter the retrieval bag from the outside.

[0013] The opening execution component has an open state (or unfolded state) and a closed state. The retrieval bag opening control component is used to control the opening execution component to switch between the open state and the closed state. In the open state, the opening execution component is used to open the retrieval bag, and in the closed state, it is used to close the retrieval bag.

[0014] In use, only one opening needs to be made in the abdomen for the expansion and execution component to enter. In this solution, by setting the instrument channel at the center of the expansion and execution component, the pulverizing instrument can enter the retrieval bag through the instrument channel to pulverize the tumor inside, without the need for an additional opening, thus avoiding the problem of increasing the complexity of the operation by cooperating with multiple instrument channels.

[0015] The expansion actuator uses a structure to expand the retrieval bag without the need to inflate it with air, eliminating the risk of air leakage and making it more reliable. Furthermore, because the retrieval bag is expanded by a mechanical structure, it will not deform or shift, reducing the risk of tearing the retrieval bag during tumor fragmentation.

[0016] The entire process of inserting, expanding, inserting the tumor, crushing the tumor, and removing the retrieval bag is more convenient than the traditional inflatable retrieval bag solution.

[0017] Furthermore, the opening execution component includes a connecting rod, which is rotatably mounted. The bag opening control component is used to drive the connecting rod to rotate, thereby enabling the opening execution component to switch between an open state and a closed state.

[0018] The connecting rod can be understood as a rotating structure. Its shape is not limited to a rod, as long as it can be rotated to unfold and open the retrieval bag.

[0019] Optionally, the bag opening control component can be a rotary drive module that directly drives the first linkage to rotate.

[0020] Furthermore, the opening execution component also includes a transmission link, the main body is provided with a link guide body, the link guide body is provided with a link guide groove, one end of the transmission link is movably installed in the link guide groove, and the other end is connected to link one. The bag opening control component is used to drive the transmission link to move in the link guide groove and drive link one to rotate.

[0021] Furthermore, the spreading execution component also includes connecting rod two and connecting rod three. Connecting rod one, connecting rod two, and connecting rod three are connected in sequence by hinges to form a frame structure, which makes the spreading effect more stable. Connecting rod one and connecting rod three are both connected to the main body by hinges.

[0022] Optionally, the bag opening control component can be any linear drive module, such as a cylinder, electric cylinder, crank slider, etc., used to drive the transmission connecting rod to move in the connecting rod guide groove.

[0023] Preferably, the retrieval bag opening control component includes several push-pull rods, which are movably mounted on the main body. The push-pull rods are connected to the transmission link and are used to control the movement of the transmission link in the link guide groove. The transmission link is controlled by manually controlling the movement of the push-pull rods, thereby reducing structural complexity and cost.

[0024] Furthermore, the bag opening control component also includes an adjusting nut. The main body is provided with a nut mating part, and the adjusting nut is installed at the nut mating part. The push-pull rod is connected to the adjusting nut. The movement of the push-pull rod is controlled by rotating the adjusting nut, thereby improving the overall integration of the device.

[0025] Furthermore, the retrieval bag opening control component includes several traction ropes, which are used to connect to the retrieval bag and control the opening or closing of the retrieval bag opening by pulling the traction ropes.

[0026] Furthermore, the retrieval bag opening control assembly also includes a lead block and a guide limiting body connected to the lead block. The lead block is connected to a traction rope, and a guide limiting groove is provided in the main body. The guide limiting body is movably installed in the guide limiting groove.

[0027] Furthermore, the retrieval bag opening control assembly also includes a locking screw. The main body is provided with a screw hole for installing the locking screw. The locking screw can abut against the guide limiter to lock the position of the lead block.

[0028] A retrieval device includes the aforementioned retrieval spreader and retrieval bag, wherein the retrieval bag has an opening, and at least the opening is elastic. The opening has an open and a closed state, and a traction rope is used to control the switching between the open and closed states of the retrieval bag opening.

[0029] The beneficial effects of this invention are as follows: By setting up a retrieval bag opening control component, a retrieval bag opening control component, a main body, an opening execution component, and an instrument channel, wherein the instrument channel is located at the center of the device, instruments such as pulverizing instruments can enter the retrieval bag through the instrument channel to pulverize the tumor inside, without the need for a separate opening. Therefore, when using this device to remove biological tissues such as tumors, only one opening needs to be used for operation, including opening the retrieval bag, pulverizing the tissue, and removing the tissue, avoiding the need for multiple instrument channels to increase the complexity of the surgery.

[0030] The opening actuator uses a mechanical structure to open the retrieval bag, eliminating the need to inflate the bag with air and eliminating the risk of air leakage. This makes it more reliable. Furthermore, because the retrieval bag is opened by a mechanical structure, it will not deform or shift, reducing the risk of tearing the bag during tumor fragmentation.

[0031] This solution is more convenient and simpler to operate than the traditional inflatable retrieval bag solution in terms of the entire process of inserting and expanding the retrieval bag, obtaining the tumor, crushing the tumor, and removing the retrieval bag. The device is also more reliable. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of the invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0034] Figure 1 A schematic diagram showing the opened state of the object-retrieving spreader;

[0035] Figure 2 A schematic diagram showing the closed state of the object-retrieving spreader;

[0036] Figure 3 A cross-sectional structural diagram of the object-retrieving spreader;

[0037] Figure 4 A schematic diagram of the exploded structure of a material-retrieving spreader;

[0038] Figure 5 A schematic diagram of the connection structure between the main body and the supporting execution components;

[0039] Figure 6 A schematic diagram illustrating the transition of the execution component from a closed to an open state;

[0040] Figure 7 A schematic diagram showing the closed state of the object-retrieving spreader during use;

[0041] Figure 8 A schematic diagram showing the unfolded state of the object-retrieving spreader during use;

[0042] Figure 9 A schematic diagram showing the opening of the retrieval bag when the retrieval expander is in the expanded state;

[0043] In the diagram: 1. Retrieval bag opening control assembly, 11. Lead block, 111. Buckle structure, 12. Guide limit body, 13. Traction rope, 14. Lead block cover, 15. Locking screw; 2. Retrieval bag opening control assembly, 21. Adjusting nut, 22. Push-pull rod plate, 23. Push-pull rod, 24. Cover; 3. Main body, 31. Screw hole, 32. Guide limit groove, 34. Link guide body, 34. Link guide groove, 341. Nut mating part; 4. Opening execution assembly, 41. Link 1, 42. Link 2, 43. Transmission link, 44. Retrieval bag, 5. Retrieval bag opening, 51. Instrument channel, 6. Detailed Implementation

[0044] The following is combined with Figures 1-9 The present invention will be described in detail below.

[0045] Example 1:

[0046] The present invention provides a lifting and spreading device, such as... Figure 1 It includes a retrieval bag opening control component 1, a retrieval bag opening control component 2, a main body 3, an opening execution component 4, and an instrument channel 6.

[0047] The retrieval bag opening control component 1 is used to open or close the retrieval bag opening, such as... Figure 1 , Figure 3 , Figure 4 The retrieval bag opening control assembly 1 includes a lead block 11, a guide limiter 12, several traction ropes 13, a lead block cover plate 14, and a locking screw 15.

[0048] The traction rope 13 is used to connect to the retrieval bag. Pulling the traction rope 13 controls the opening or closing of the retrieval bag's opening. Figure 2 The traction rope 13 extends through the interior of the main body 3 and connects to the inner wall of the retrieval bag 5 and the edge of the retrieval bag opening 51 at the retrieval bag 5.

[0049] The lead block 11 is disc-shaped with a through hole in the center. This through hole is also part of the instrument channel 6. The traction rope 13 passes through the through hole and wraps around the upper surface of the lead block 11. The lead block 11 is provided with a buckle structure 111. The lead block cover plate 14 cooperates with the buckle structure 111 to cover the lead block 11 and clamp and fix the traction rope 13.

[0050] Several sets of guide limiting bodies 12 are arranged in a ring around the through hole. The guide limiting bodies 12 are connected to the lead block 11. A hook-shaped structure is provided at the bottom. Several guide limiting grooves 32 are provided in the main body 3. The guide limiting bodies 12 are movably installed in the guide limiting grooves 32. The hook-shaped structure plays a limiting role when it moves to the top position of the guide limiting groove 32, so as to prevent the guide limiting bodies 12 from falling out of the guide limiting grooves 32.

[0051] The main body 3 is provided with screw holes 31 for installing locking screws 15. By tightening the locking screws 15, the guide limit body 12 can be pressed against it to lock the position of the lead block 11. After pulling the lead block 11 upward to open the opening of the retrieval bag, the position of the lead block 11 can be locked by the locking screws 15, which makes it convenient for other instruments such as crushing instruments to enter the retrieval bag through the instrument channel 6 for operation.

[0052] The bag opening control component 2 is used to control the switching of the opening execution component 4 in different states, such as... Figures 1-4 The bag opening control assembly 2 includes an adjusting nut 21, several push-pull rods 23, a push-pull rod plate 22, and a cover 24. The main body 3 is provided with a threaded nut mating part 35. The adjusting nut 21 is installed at the nut mating part 35. The push-pull rods 23 are connected to the adjusting nut 21. The movement of the push-pull rods 23 is controlled by rotating the adjusting nut 21, thereby improving the overall integration of the device.

[0053] Several sets of push-pull rods 23 are arranged in a ring around the instrument channel 6. The push-pull rods 23 are connected to the circular push-pull rod plate 22 with a through hole in the middle. The ring-shaped cover 24 covers the upper end of the nut 21 to fix the push-pull rod plate 22 and the adjusting nut 21.

[0054] like Figure 1 , Figure 2 The rotating nut 21 switches between open and closed states.

[0055] In this embodiment, the main body 3 is a whole. In other embodiments, the main body is not limited to a single component and can be a combination of several structures. The instrument channel 6 is set through the main body 3.

[0056] The main body 3 is provided with several connecting rod guides 34 arranged in a ring around the instrument channel 6. The connecting rod guides 34 are provided with connecting rod guide grooves 341, and the push-pull rod 23 extends to the end of the connecting rod guide groove 341.

[0057] The opening actuator 4 adopts a linkage assembly. The opening and closing of the retrieval bag 5 is achieved by the expansion and contraction of the linkage assembly. In other embodiments, the opening actuator 4 can adopt any rotating structure. Its shape is not limited to the rod body, as long as it can open the retrieval bag by rotation.

[0058] In this embodiment, several sets of opening actuators 4 are arranged on the main body 3. The instrument channel 6 passes through the main body 3, and the several sets of opening actuators 4 are arranged around the instrument channel 6. The opening actuators 4 include connecting rod 1 41, connecting rod 2 42, connecting rod 3 43, and transmission connecting rod 44, as shown below. Figure 5 , Figure 6Links 41, 42, and 43 are sequentially hinged to form a frame structure, making the opening effect more stable. The other ends of links 41 and 43 are hinged to the main body 3. One end of the transmission link 44 is movably mounted in the link guide groove 341 via a pin structure, and the other end is rotatably connected to link 41. The push-pull rod 23 is hinged to one end of the transmission link 44 located in the link guide groove 341. When the push-pull rod 23 moves upward, the transmission link 44 opens up link 41, causing the frame structure composed of the links to unfold and open the retrieval bag. The movement of the push-pull rod 23 is manually controlled to control the transmission link 44, reducing structural complexity and cost.

[0059] The expansion execution component 4 has an expanded state (or unfolded state) and a closed state. The retrieval bag expansion control component 2 is used to control the expansion execution component 4 to switch between the expanded state and the closed state. In the expanded state, the expansion execution component 4 is used to expand the retrieval bag, and in the closed state, it is used to close the retrieval bag.

[0060] Instrument channel 6 is used for instruments to enter the retrieval bag from the outside. Instrument channel 6 is a channel for observing, grasping, and crushing tumors.

[0061] In use, only one opening needs to be made in the abdomen for the opening execution component 4 to enter. In this solution, by setting the instrument channel 6 at the center of the opening execution component 4, the pulverizing instrument can enter the retrieval bag through the instrument channel 6 to pulverize the tumor inside, without the need for an additional opening, thus avoiding the problem of increasing the complexity of the operation by cooperating with multiple instrument channels.

[0062] The expansion actuator 4 uses a structure to expand the retrieval bag without the need to inflate it with air, eliminating the risk of air leakage and making it more reliable. Furthermore, since the retrieval bag is expanded by a mechanical structure, it will not deform or shift, reducing the risk of tearing the retrieval bag during the tumor crushing process.

[0063] The entire process of inserting, expanding, inserting the tumor, crushing the tumor, and removing the retrieval bag is more convenient than the traditional inflatable retrieval bag solution.

[0064] A retrieval device includes the aforementioned retrieval spreader and retrieval bag 5. The retrieval bag 5 is provided with a retrieval bag opening 51. At least the retrieval bag opening 51 is elastic, or the retrieval bag 5 as a whole is made of elastic material. The retrieval bag opening 51 has an open and closed state. A traction rope 13 is used to control the switching between the open and closed states of the retrieval bag opening 51.

[0065] Usage steps: as follows Figures 7-9 .

[0066] like Figure 7Install the retrieval bag 5 onto the expansion actuator 4. At this time, the expansion actuator 4 is in a retracted state, and the retrieval expander is in a closed state.

[0067] Make a small incision in the abdomen and insert the head of the object retrieval spreader into the incision;

[0068] Rotate nut 21, and use push-pull rod 23 to rotate transmission link 44 to open link 41, so that the frame structure composed of link can be unfolded and the retrieval bag 5 can be opened.

[0069] Pulling the lead block 11 causes the traction rope to retract, as... Figure 9 An opening is formed at the bottom of the retrieval bag 5;

[0070] Place the tumor tissue into the retrieval bag and lower the lead block 11 to close the bottom of the retrieval bag.

[0071] Other instruments are inserted through instrument channel 6 to break up the tumor;

[0072] Rotate nut 21 to retract the retrieval bag;

[0073] The retrieval device was removed along with the fragmented tumor.

[0074] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand and implement the present invention. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A retrieval dilator, comprising: It comprises a bag opening control assembly (1), a bag opening control assembly (2), a main body (3), an opening execution assembly (4) and an instrument channel (6); The bag opening control assembly (1) is used to open or close the bag opening. The bag opening control assembly (2) is used to control the switching of the opening execution assembly (4) in different states. The opening execution assembly (4) is provided with a plurality of groups and is arranged on the main body (3). The instrument channel (6) is arranged through the main body (3). A plurality of groups of the opening execution assembly (4) are arranged around the instrument channel (6). The instrument channel (6) is used for the instrument to enter the bag from the outside. The opening execution assembly (4) has an opening state and a closing state. The bag opening control assembly (2) is used to control the switching of the opening execution assembly (4) between the opening state and the closing state. The opening execution assembly (4) is used to open the bag in the opening state and is used to realize the folding of the bag in the closing state.

2. The retrieval dilator of claim 1, wherein: The opening execution assembly (4) comprises a connecting rod one (41). The connecting rod one (41) is rotatably installed. The bag opening control assembly (2) is used to drive the connecting rod one (41) to rotate, so as to realize the switching of the opening execution assembly (4) between the opening state and the closing state.

3. The retrieval dilator of claim 2, wherein: The opening execution assembly (4) further comprises a transmission connecting rod (44). The main body (3) is provided with a connecting rod guide body (34). The connecting rod guide body (34) is provided with a connecting rod guide groove (341). One end of the transmission connecting rod (44) is movably installed in the connecting rod guide groove (341). The other end is connected with the connecting rod one (41). The bag opening control assembly (2) is used to drive the transmission connecting rod (44) to move in the connecting rod guide groove (341), so as to drive the connecting rod one (41) to rotate.

4. The retrieval dilator of claim 3, wherein: The opening execution assembly (4) further comprises a connecting rod two (42) and a connecting rod three (43). The connecting rod one (41), the connecting rod two (42) and the connecting rod three (43) are sequentially hinged and connected, forming a frame structure. The connecting rod one (41) and the connecting rod three (43) are hingedly connected with the main body (3).

5. The retrieval dilator of any of claims 2-4, wherein: The bag opening control assembly (2) comprises a plurality of push-pull rods (23). The push-pull rods (23) are movably installed on the main body (3). The push-pull rods (23) are connected with the transmission connecting rod (44) and are used to control the movement of the transmission connecting rod (44) in the connecting rod guide groove (341).

6. The retrieval dilator of claim 5, wherein: The bag opening control assembly (2) further comprises an adjusting nut (21). The main body (3) is provided with a nut matching part (35). The adjusting nut (21) is installed at the nut matching part (35). The push-pull rod (23) is connected with the adjusting nut (21). The movement of the push-pull rod (23) is controlled by rotating the adjusting nut (21).

7. The object holder according to claim 1 or 6, characterized in that: The bag opening control assembly (1) comprises a plurality of traction ropes (13). The traction ropes (13) are used to be connected with the bag. The opening or closing of the bag opening is controlled by pulling the traction ropes (13).

8. The retrieval dilator of claim 7, wherein: The object bag opening control assembly (1) further comprises a lead block (11) and a guide limiting body (12) connected with the lead block (11), the lead block (11) is connected with the traction rope (13), the main body (3) is provided with a guide limiting groove (32), and the guide limiting body (12) is movably installed in the guide limiting groove (32).

9. The retrieval dilator of claim 8, wherein: The object bag opening control assembly (1) further comprises a locking screw (15), the main body (3) is provided with a screw hole (31) for installing the locking screw (15), and the locking screw (15) can abut against the guide limiting body (12), so that the position of the lead block (11) is locked.

10. A retrieval device, characterized by: The object bag (5) is provided with an object bag opening (51), the object bag opening (51) has an opening and closing state, and the traction rope (13) is used for controlling the switching of the opening and closing state of the object bag opening (51).

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