Disposable fetching bag

Abstract

The invention discloses a disposable fetching bag, which relates to the technical field of medical instruments and comprises an outer sleeve, and a fetching component is arranged in the outer sleeve. When the fetching bag is used, the inner push rod is pulled outwards through the push handle, the memory alloy elastic ring is driven to move towards the interior of the outer sleeve, the memory alloy elastic ring is forced to be extruded and shrunk, and meanwhile the bag opening of the fetching bag body is tightened together. And then the tightening rope is pulled, so that the bag opening tightened for the first time is tightened again. The miniature negative pressure pump is started, negative pressure is generated, air in the double-layer sealing film is exhausted through the air suction hose, a negative pressure cavity is formed, and the negative pressure cavity is tightly shrunk towards the air suction hose. Under the action of the object taking assembly, the top contraction opening is formed by pulling the inner push rod, then the bottom tight contraction opening is formed by tightening the tightening rope, and finally the middle part is forced to form tight contraction through negative pressure suction, so that the contraction tightness of the bag opening is greatly improved.

Description

Technical Field

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

[0002] Medical devices refer to instruments, equipment, appliances, in vitro diagnostic reagents and calibrators, materials, and other similar or related items that are used directly or indirectly on the human body. Disposable endoscopic retrieval bags are disposable medical devices used in conjunction with endoscopes (such as gastroscopes, colonoscopes, and laparoscopes). They are primarily used during minimally invasive procedures to encapsulate and completely remove diseased tissues, foreign bodies, or surgical debris from the body, and are classified as Class II medical devices.

[0003] In existing technologies, the core purpose of using disposable retrieval bags is to ensure the safety of diagnosis and treatment, improve the efficiency of retrieval, and reduce the risk of complications. However, existing disposable retrieval bags typically use a traction rope to tighten the bag opening. This can lead to residual gas in the bag, resulting in a bag that is too large or too loose, making it difficult to remove the item smoothly from the puncture site. Furthermore, the tightness of the bag opening is often poor; when retrieving small or fragmented items, leakage can easily occur from the loosened opening, leading to retrieval failure, requiring repeated retrieval, wasting time, and potentially causing secondary injury.

[0004] Therefore, we propose a disposable retrieval bag to address the problems mentioned in the background section. Summary of the Invention

[0005] The purpose of this invention is to provide a disposable retrieval bag to solve the problem that, when using the disposable retrieval bag mentioned in the background art, the method of shrinking the bag opening by only using a traction rope results in poor shrinkage tightness. When retrieving small or fragmented items, leakage is also likely to occur from the gaps between the bag openings, leading to retrieval failure and requiring repeated retrieval, which is time-consuming.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a disposable retrieval bag, including an outer tube, wherein a retrieval component is disposed inside the outer tube, and a quick-release component is disposed on the top of the retrieval component;

[0007] The retrieval assembly includes an inner push rod, one end of which is fixedly connected to a shape memory alloy elastic ring. The outer surface of the shape memory alloy elastic ring is provided with a retrieval bag body. A connecting groove is opened at the top of the outer surface of the retrieval bag body. A double-layer sealing membrane is fixedly connected inside the connecting groove. An air suction hose is fixedly connected to the outer surface of the double-layer sealing membrane. A fixing tube is fixedly connected to one end of the air suction hose. A push handle is fixedly installed at the other end of the inner push rod. A miniature negative pressure pump is provided on one side of the outer surface of the push handle.

[0008] Preferably, the suction end of the miniature negative pressure pump is fixedly connected to a connecting hose, one end of the connecting hose is fixedly connected to a connecting pipe, and one end of the connecting pipe is connected to one end of the fixed pipe through a connector.

[0009] Preferably, the quick-release assembly includes a lifting plate, a stop plate is fixedly installed at the center of the bottom of the lifting plate, multiple insert rods are fixedly installed on both sides of the bottom of the stop plate, and a positive strong magnet is fixedly connected to both sides of the bottom of the lifting plate.

[0010] Preferably, the bottom of each of the two positive strong magnets is magnetically connected to a negative strong magnet, a card plate is fixedly installed at the bottom of the fixing tube, and multiple insertion holes are opened on both sides of the top of the card plate.

[0011] Preferably, a threaded mounting block is fixedly installed on one side of the outer surface of the miniature negative pressure pump, a threaded groove is opened on one side of the outer surface of the push handle, the outer surface of the threaded mounting block is threaded into the inside of the threaded groove, a handle is fixedly installed on the outer surface of one end of the outer sleeve, the outer surface of the inner push rod is movably embedded in the inside of the outer sleeve, and the cross-section of the suction hose is V-shaped.

[0012] Preferably, a slot is provided at the top of the outer surface of the inner push rod, and a fixing groove is provided at the top of the outer surface of the push handle, with the outer surface of the fixing tube movably embedded inside the slot and the fixing groove.

[0013] Preferably, a strap is fixedly connected to the outer surface of the retrieval bag body, and a tightening rope is movably embedded inside the strap and the retrieval bag body. The inner walls on both sides of the strap are fixedly connected to the outer surface of the fixing tube, and the outer surface of the strap is movably embedded inside the slot and the fixing groove.

[0014] Preferably, two magnetic slots are formed on the outer surface of the push handle near the fixing slot, and the outer surfaces of the two negative pole strong magnets are respectively fixedly installed inside the two magnetic slots.

[0015] Preferably, the bottom surface of the fixing groove is provided with multiple slots, the outer surfaces of the multiple insertion rods are respectively movably embedded in the interior of the multiple insertion holes, and the bottom ends of the multiple insertion rods are respectively movably embedded in the interior of the multiple slots.

[0016] Preferably, the inner wall of the abutment is in contact with the outer surface of the strap, the outer surface of the card plate is movably embedded in the inside of the fixing groove, and both sides of the bottom of the abutment are in contact with both sides of the top of the card plate.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. In use, this invention involves pulling the inner push rod outward with the push handle, causing the shape memory alloy elastic ring to move inward into the outer tube. The shape memory alloy elastic ring is forced to compress and contract, simultaneously tightening the opening of the retrieval bag. Then, pulling the tightening rope further tightens the initially tightened opening. Activating the micro negative pressure pump generates negative pressure, expelling gas from inside the double-layered sealing membrane through the suction hose, forming a negative pressure chamber that tightly contracts towards the suction hose. Under the action of the retrieval component, pulling the inner push rod creates a top contraction opening, followed by tightening the tightening rope to create a bottom tight contraction opening. Finally, negative pressure suction forces the middle section to contract tightly, expelling the gas from the retrieval bag. This makes the retrieval bag smaller and stiffer, making it easier to remove from the puncture hole, greatly improving retrieval efficiency, enhancing the tightness of the bag opening contraction, preventing accidental leakage of small objects, reducing operation time, and avoiding secondary injuries.

[0019] 2. In use, after the retrieval component is completely pulled out of the outer tube, the retrieval bag body is removed from the outer surface of the shape memory alloy elastic ring. The connecting tube and the fixing tube are separated. Then, the lifting plate is pulled outward forcefully to separate the positive and negative strong magnets, and the insertion rod is pulled out of the slot and hole. Then, the fixing tube is pulled out with slight force, separating the fixing tube and the retrieval bag body from the inner push rod, thereby separating the retrieval bag body. Compared with the traditional method of wrapping and knotting the straps for fixation, the quick-release component can quickly install and remove the straps, thus conveniently and quickly removing the retrieval bag body, which is more convenient, simpler, and saves time.

[0020] 3. When using this invention, after the fixing tube is embedded in the fixing groove and the card slot, the insertion rod is inserted into the insertion hole and the slot. Under the strong magnetic attraction of the positive and negative strong magnets, the abutment plate tightly presses the fixing tube into the fixing groove, which helps to improve the firmness and stability of the fixing tube. Attached Figure Description

[0021] Figure 1 This is a front perspective view of the disposable retrieval bag of the present invention;

[0022] Figure 2 This is a schematic diagram showing the unfolded structure of the outer tube in the disposable retrieval bag of the present invention;

[0023] Figure 3 This is a schematic diagram showing the unfolded structure of the shape memory alloy elastic ring in the disposable retrieval bag of the present invention;

[0024] Figure 4 This is a schematic cross-sectional view of the structure of the retrieval bag body in the disposable retrieval bag of the present invention;

[0025] Figure 5 This is a partial cross-sectional schematic diagram of the push handle in the disposable retrieval bag of the present invention;

[0026] Figure 6 This is a schematic diagram showing the unfolded structure of the quick-release component in the disposable retrieval bag of the present invention;

[0027] Figure 7 This is a schematic diagram showing the unfolded structure of the card plate in the disposable retrieval bag of the present invention;

[0028] Figure 8 This is a cross-sectional schematic diagram of the fixing groove in the disposable retrieval bag of the present invention.

[0029] In the picture:

[0030] 1. Outer tube; 2. Handle; 3. Retrieval assembly; 301. Inner push rod; 302. Push handle; 303. Memory alloy elastic ring; 304. Retrieval bag body; 305. Connecting groove; 306. Double-layer sealing film; 307. Suction hose; 308. Fixing tube; 309. Strap; 310. Card slot; 311. Tightening rope; 312. Threaded groove; 313. Threaded mounting block; 314. Miniature negative pressure pump; 315. Connecting hose; 316. Connecting tube; 317. Magnetic slot; 318. Fixing groove; 319. Slot; 4. Quick release assembly; 401. Lifting plate; 402. Support plate; 403. Insert rod; 404. Positive strong magnet; 405. Negative strong magnet; 406. Card plate; 407. Insertion hole. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Example 1: Please refer to Figures 1-8As shown, the present invention provides a technical solution: a disposable retrieval bag, including an outer tube 1, an retrieval component 3 is disposed inside the outer tube 1, and a quick-release component 4 is disposed on the top of the retrieval component 3; the retrieval component 3 includes an inner push rod 301, one end of which is fixedly connected to a shape memory alloy elastic ring 303, and a retrieval bag body 304 is disposed on the outer surface of the shape memory alloy elastic ring 303. A connecting groove 305 is opened at the top of the outer surface of the retrieval bag body 304, a double-layer sealing film 306 is fixedly connected inside the connecting groove 305, and an air suction hose 307 is fixedly connected to the outer surface of the double-layer sealing film 306. One end of 307 is fixedly connected to a fixing tube 308, and the other end of the inner push rod 301 is fixedly installed with a push handle 302. A miniature negative pressure pump 314 is provided on one outer surface of the push handle 302. A connecting hose 315 is fixedly connected to the suction end of the miniature negative pressure pump 314. A connecting tube 316 is fixedly connected to one end of the connecting hose 315. One end of the connecting tube 316 is connected to one end of the fixing tube 308 through a connector. The quick-release assembly 4 includes a lifting plate 401. A backing plate 402 is fixedly installed at the center of the bottom of the lifting plate 401. Multiple insert rods 403 are fixedly installed on both sides of the bottom of the backing plate 402. The bottom of the lifting plate 401... Positive strong magnets 404 are fixedly connected to both sides of the part, and negative strong magnets 405 are magnetically connected to the bottom of each of the two positive strong magnets 404. A clamping plate 406 is fixedly installed at the bottom of the fixing tube 308. Multiple insertion holes 407 are opened on both sides of the top of the clamping plate 406. A threaded mounting block 313 is fixedly installed on one side of the outer surface of the micro negative pressure pump 314. A threaded groove 312 is opened on one side of the outer surface of the push handle 302. The outer surface of the threaded mounting block 313 is threaded into the inside of the threaded groove 312. A handle 2 is fixedly installed on the outer surface of one end of the outer tube 1. The outer surface of the inner push rod 301 is movably embedded in the outer tube 1. Inside, the suction hose 307 has a V-shaped cross-section. The top of the outer surface of the inner push rod 301 has a slot 310, and the top of the outer surface of the push handle 302 has a fixing groove 318. The outer surface of the fixing tube 308 is movably embedded in the slot 310 and the fixing groove 318. The outer surface of the retrieval bag body 304 is fixedly connected to a strap 309. The strap 309 and the retrieval bag body 304 are movably embedded in a tightening rope 311. The inner walls on both sides of the strap 309 are fixedly connected to the outer surface of the fixing tube 308. The outer surface of the strap 309 is movably embedded in the slot 310 and the fixing groove 318.

[0033] In this embodiment, during use, the width of the negative pole strong magnet 405 matches the internal width of the magnetic suction groove 317 and does not extend into the fixing groove 318, thus not affecting the subsequent upward pull-out of the abutment plate 402. The fixing tube 308 is embedded in the slot 310 with a certain tightness, ensuring that the fixing tube 308 will not fall out of the slot 310 automatically. Inside the fixing groove 318, the fixing tube 308 is assisted in fixing by the insertion rod 403 and the abutment plate 402 under the strong magnetic attraction of the positive pole strong magnet 404 and the negative pole strong magnet 405, improving the firmness and stability of the fixing tube 308. Take out the miniature negative pressure pump 314, rotate the threaded mounting block 313 into the threaded groove 312, thereby installing the miniature negative pressure pump 314 on the push handle 302. Move the connecting tube 316 to one end of the fixing tube 308, and abut one end of the connecting tube 316 and one end of the fixing tube 308 together through the sealing ring, and then connect the two tightly through the connector. Pulling the inner push rod 301 outward by the push handle 302 causes the shape memory alloy elastic ring 303 to move inward into the outer sleeve 1, forcing the shape memory alloy elastic ring 303 to compress and contract. At the same time, the opening of the retrieval bag body 304 tightens. The tightening rope 311 in the retrieval bag body 304 is located below the double-layer sealing film 306. Pulling the tightening rope 311 causes the initially tightened bag opening to tighten again, at which point the bag opening shrinks. The double-layer sealing film 306 also shrinks, making it easier for the double-layer sealing film 306 to tighten under negative pressure later. The suction hose 307 is V-shaped, with both ends connected to the inside of the double-layer sealing film 306. Activating the micro negative pressure pump 314 generates negative pressure, drawing the gas inside the double-layer sealing film 306 into the fixed tube 308 through the suction hose 307, then into the connecting tube 316 and the connecting hose 315, and finally out through the outlet of the micro negative pressure pump 314. As the gas is expelled from the double-layer sealing membrane 306, a negative pressure chamber is formed. Under the action of external atmospheric pressure, the double-layer sealing membrane 306 is squeezed and adhered together, and tightly contracted towards the suction hose 307. Under the action of the retrieval component 3, the top contraction opening is formed by pulling the inner push rod 301, and then the bottom contraction opening is formed by tightening the tightening rope 311. Finally, the negative pressure suction forces the middle part to form a tight contraction, which greatly improves the tightness of the bag opening contraction, prevents accidental leakage of small objects, reduces operation time, avoids secondary injury, and solves the problem that when using disposable retrieval bags, the method of contracting the bag opening only by pulling the rope will result in poor contraction tightness. When retrieving small objects, leakage is easy to occur from the gaps between the bag openings, leading to retrieval failure and the need to retrieve the object again, which is time-consuming.

[0034] Example 2: Figure 3 and Figures 6-8As shown, the quick-release assembly 4 includes a lifting plate 401, a stop plate 402 fixedly installed at the center of the bottom of the lifting plate 401, multiple insert rods 403 fixedly installed on both sides of the bottom of the stop plate 402, positive strong magnets 404 fixedly connected to both sides of the bottom of the lifting plate 401, and negative strong magnets 405 magnetically connected to the bottom of each of the two positive strong magnets 404. A locking plate 406 is fixedly installed at the bottom of the fixing tube 308, and multiple insertion holes 407 are opened on both sides of the top of the locking plate 406. A slot 310 is opened at the top of the outer surface of the inner push rod 301, and a fixing groove 318 is opened at the top of the outer surface of the push handle 302. The outer surface of the fixing tube 308 is movably embedded in the slot 310 and the fixing groove 318. A strap 309 is fixedly connected to the outer surface of the retrieval bag body 304, and the strap 309 is movably embedded in the interior of the retrieval bag body 304. A tightening rope 311 is provided. The inner walls of both sides of the strap 309 are fixedly connected to the outer surface of the fixing tube 308. The outer surface of the strap 309 is movably embedded in the slot 310 and the fixing groove 318. Two magnetic grooves 317 are opened on the outer surface of the push handle 302 near the fixing groove 318. The outer surfaces of two negative pole strong magnets 405 are respectively fixedly installed in the two magnetic grooves 317. Multiple slots 319 are opened on the bottom surface of the fixing groove 318. The outer surfaces of multiple insertion rods 403 are movably embedded in the multiple insertion holes 407. The bottom ends of multiple insertion rods 403 are movably embedded in the multiple slots 319. The inner wall of the abutment plate 402 is in contact with the outer surface of the strap 309. The outer surface of the clamping plate 406 is movably embedded in the fixing groove 318. The two sides of the bottom of the abutment plate 402 are in contact with the two sides of the top of the clamping plate 406.

[0035] In this embodiment, during use, the bottom of the inner walls on both sides of the strap 309 are fixedly connected to the outer surface of the fixing tube 308. This connection is the same as the connection method of the edge of the disposable tea bag. By pulling the strap 309 with a little force, it can be torn off from the outer surface of the fixing tube 308. After completely pulling the retrieval component 3 out of the outer tube 1, remove the retrieval bag body 304 from the outer surface of the shape memory alloy elastic ring 303. Then, separate the connecting tube 316 from the fixing tube 308, and pull the lifting plate 401 outward with force to separate the positive strong magnet 404 from the negative strong magnet 405. At the same time, drive the abutment plate 402 to move outward inside the fixing groove 318, and pull out the multiple insertion rods 403 from the slot 319 and the insertion hole 407 in sequence. After the abutment plate 402 is completely removed from the fixing groove 318, pull the fixing tube 308 out of the card slot 310 and the fixing groove 318 with slight force, so that the fixing tube 308 and the retrieval bag body 304 are separated from the inner push rod 301, thereby separating the retrieval bag body 304. After the fixing tube 308 is snapped into the slot 310 and the fixing groove 318, the fixing tube 308, the strap 309, and the retrieval bag body 304 can be installed using the quick-release component 4. Traditional disposable retrieval bags require the strap 309 to be wrapped multiple times around the outer surface of the inner push rod 301 and then tied at the push handle 302. The knot must then be untied before the retrieval bag body 304 can be removed. If a knot is accidentally tied too tightly, untying it takes even more time and effort. The quick-release component 4 allows for quick installation and removal of the strap 309, making it easier and faster to remove the retrieval bag body 304, saving time and effort.

[0036] The overall mechanism achieves the following effect and works as follows: The miniature negative pressure pump 314 is removed, and the threaded mounting block 313 is rotated and installed into the threaded groove 312, thus mounting the miniature negative pressure pump 314 on the push handle 302. The connecting pipe 316 is moved to one end of the fixed pipe 308, and one end of the connecting pipe 316 is pressed against one end of the fixed pipe 308 by a sealing ring. Then, the two are tightly connected by a connector. The inner push rod 301 is pulled outward by the push handle 302, causing the shape memory alloy elastic ring 303 to move into the outer sleeve 1. The shape memory alloy elastic ring 303 is forced to compress and contract, while the opening of the retrieval bag body 304 tightens. The tightening rope 311 in the retrieval bag body 304 is located below the double-layer sealing film 306. Pulling the tightening rope 311 then causes the initially tightened bag opening to tighten again, at which point the bag opening shrinks, and the double-layer sealing film 306 simultaneously contracts. The suction hose 307 is V-shaped, with both ends connected to the interior of the double-layer sealing membrane 306. Activating the micro negative pressure pump 314 generates negative pressure, drawing gas from inside the double-layer sealing membrane 306 through the suction hose 307 into the fixed tube 308, then into the connecting tube 316 and connecting hose 315, and finally out through the outlet of the micro negative pressure pump 314. As gas is expelled from the double-layer sealing membrane 306, a negative pressure chamber is formed. Under the influence of external atmospheric pressure, the double-layer sealing membrane 306 is squeezed together and tightly contracted towards the suction hose 307. Under the action of the retrieval component 3, the top contraction opening is formed by pulling the inner push rod 301, followed by tightening the tightening rope 311 to form a tight bottom contraction opening. Finally, negative pressure suction forces the middle part to form a tight contraction, greatly improving the tightness of the bag opening, preventing accidental leakage of small objects, reducing operation time, and avoiding secondary injuries. After completely pulling the retrieval component 3 out of the outer tube 1, remove the retrieval bag body 304 from the outer surface of the shape memory alloy elastic ring 303. Then, separate the connecting tube 316 from the fixing tube 308, and pull the lifting plate 401 outward with force to separate the positive strong magnet 404 from the negative strong magnet 405. At the same time, drive the abutment plate 402 to move outward inside the fixing groove 318, and pull out the multiple insertion rods 403 from the slot 319 and the insertion hole 407 in sequence. After the abutment plate 402 is completely removed from the fixing groove 318, pull the fixing tube 308 out of the card slot 310 and the fixing groove 318 with slight force, so that the fixing tube 308 and the retrieval bag body 304 are separated from the inner push rod 301, thereby separating the retrieval bag body 304.After the fixing tube 308 is inserted into the slot 310 and the fixing groove 318, the fixing tube 308, the strap 309 and the retrieval bag body 304 can be installed by using the quick release component 4. However, when installing a traditional disposable retrieval bag, the strap 309 needs to be wrapped around the outer surface of the inner push rod 301 multiple times and finally tied at the push handle 302. Afterwards, the knot must be untied and the wrapped strap 309 loosened before the retrieval bag body 304 can be removed. If a knot is accidentally tied, it takes more time and effort to untie.

[0037] Among them, the miniature negative pressure pump 314 is existing technology, and its components and operating principle are publicly available technologies, so they will not be explained in detail here.

[0038] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A disposable retrieval bag, including an outer tube (1), characterized in that: The outer tube (1) is provided with a retrieval component (3) inside, and a quick-release component (4) is provided on the top of the retrieval component (3); The retrieval assembly (3) includes an inner push rod (301), one end of which is fixedly connected to a shape memory alloy elastic ring (303). The outer surface of the shape memory alloy elastic ring (303) is provided with a retrieval bag body (304). A connecting groove (305) is provided at the top of the outer surface of the retrieval bag body (304). A double-layer sealing membrane (306) is fixedly connected inside the connecting groove (305). An air suction hose (307) is fixedly connected to the outer surface of the double-layer sealing membrane (306). A fixing tube (308) is fixedly connected to one end of the air suction hose (307). A push handle (302) is fixedly installed at the other end of the inner push rod (301). A miniature negative pressure pump (314) is provided on one side of the outer surface of the push handle (302).

2. The disposable retrieval bag according to claim 1, characterized in that: The suction end of the micro negative pressure pump (314) is fixedly connected to a connecting hose (315), one end of the connecting hose (315) is fixedly connected to a connecting pipe (316), and one end of the connecting pipe (316) is connected to one end of the fixed pipe (308) through a connector.

3. The disposable retrieval bag according to claim 2, characterized in that: The quick-release assembly (4) includes a lifting plate (401), a stop plate (402) is fixedly installed at the center of the bottom of the lifting plate (401), a plurality of insert rods (403) are fixedly installed on both sides of the bottom of the stop plate (402), and a positive strong magnet (404) is fixedly connected to both sides of the bottom of the lifting plate (401).

4. The disposable retrieval bag according to claim 3, characterized in that: The bottom of each of the two positive strong magnets (404) is magnetically connected to a negative strong magnet (405). A card plate (406) is fixedly installed at the bottom of the fixing tube (308). Multiple insertion holes (407) are provided on both sides of the top of the card plate (406).

5. The disposable retrieval bag according to claim 4, characterized in that: A threaded mounting block (313) is fixedly installed on one side of the outer surface of the micro negative pressure pump (314). A threaded groove (312) is opened on one side of the outer surface of the push handle (302). The threaded mounting block (313) is threadedly embedded in the threaded groove (312) on its outer surface. A handle (2) is fixedly installed on the outer surface of one end of the outer sleeve (1). The outer surface of the inner push rod (301) is movably embedded in the inner sleeve (1). The suction hose (307) has a V-shaped cross-section.

6. The disposable retrieval bag according to claim 5, characterized in that: The inner push rod (301) has a slot (310) at the top of its outer surface, and the push handle (302) has a fixing groove (318) at the top of its outer surface. The outer surface of the fixing tube (308) is movably embedded in the slot (310) and the fixing groove (318).

7. The disposable retrieval bag according to claim 6, characterized in that: The outer surface of the retrieval bag body (304) is fixedly connected with a strap (309). The strap (309) and the retrieval bag body (304) are movably embedded with a tightening rope (311). The inner walls on both sides of the strap (309) are fixedly connected to the outer surface of the fixing tube (308). The outer surface of the strap (309) is movably embedded in the slot (310) and the fixing slot (318).

8. The disposable retrieval bag according to claim 7, characterized in that: Two magnetic suction slots (317) are provided on the outer surface of the push handle (302) near the fixing slot (318), and the outer surfaces of the two negative pole strong magnets (405) are respectively fixedly installed inside the two magnetic suction slots (317).

9. The disposable retrieval bag according to claim 8, characterized in that: The bottom surface of the fixed groove (318) is provided with multiple slots (319), the outer surfaces of the multiple insertion rods (403) are respectively movably embedded in the interior of the multiple insertion holes (407), and the bottom ends of the multiple insertion rods (403) are respectively movably embedded in the interior of the multiple slots (319).

10. The disposable retrieval bag according to claim 9, characterized in that: The inner wall of the abutment (402) is in contact with the outer surface of the strap (309), the outer surface of the clamp (406) is movably embedded in the inside of the fixing groove (318), and the two sides of the bottom of the abutment (402) are in contact with the two sides of the top of the clamp (406).

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