Visual stone extraction basket

Abstract

This utility model discloses a visual stone retrieval basket. The visual stone retrieval basket includes a handle, a connector at the front end of the handle, a sheath at the front end of the connector, a basket channel within the sheath, a basket assembly and a flushing head capable of changing the water flow direction movably mounted at the front end of the basket channel, a detection component for illumination and photography at the front end of the sheath near the basket assembly, an adjustment component movably mounted on the side of the handle for connection to the flushing head, a pulling component movably sleeved on the handle extending through the basket channel to the front end of the basket channel for connection to the basket assembly, a water injection pipe communicating with the basket channel on the side of the connector, and a connection cable connecting an external display device and the detection component on the side of the connector. This utility model improves the safety of bile duct stone removal, increases the efficiency and accuracy of bile duct stone removal, and helps reduce operational difficulty and learning costs.

Description

Technical Field

[0001] This utility model relates to the field of medical auxiliary device technology, and in particular to a visual stone retrieval basket that can improve the safety, efficiency and accuracy of bile duct stone removal, and reduce the difficulty of operation and learning cost. Background Technology

[0002] ERCP, or endoscopic retrograde cholangiopancreatography and its derivative techniques, has become the gold standard for treating common bile duct stones. However, the traditional ERCP procedure involves inserting a stone retrieval basket into the bile duct under duodenoscopy to remove stones. This procedure is highly dependent on X-ray fluoroscopy and the surgeon's experience, and has significant drawbacks such as blindness, low efficiency, missed stones, and high risk of complications. Overcoming the "blindness" and providing real-time, convenient, efficient, and economical direct endoscopic visualization is the key technological direction and development trend for solving these problems.

[0003] Currently, although direct visualization techniques such as choledochoscopy have been developed, allowing direct access to the bile duct for observation, they often require additional, complex specialized equipment. Furthermore, they have long learning curves, demanding high operational skills, and significantly increase costs. General stone retrieval instruments cannot be well adapted for use, making collaborative operations inconvenient and inefficient. This can lead to limitations and hinder effective bile duct stone removal. The Chinese patent titled "A Visualized Bile Duct Stone Removal Basket," patent number ZL201821998683.4, and publication date of August 30, 2019, addresses this issue. This utility model patent includes a sheath, a traction ring, a cable, a basket, and a visualization device. The sheath is a hollow tube with a cable cavity and a basket cavity in the middle. The cable is located in the cable cavity, and the basket is located in the basket cavity. One end of the cable is connected to the basket, and the other end is connected to the traction ring. The visualization device includes a control unit, a camera unit, an illumination unit, a rotating unit, a transmission unit, and a display unit. The rotating unit has the camera and illumination units. An installation cavity is provided above the basket cavity, and the rotating unit is located in the installation cavity. The transmission unit connects the rotating unit, camera, and illumination unit to the control unit, and the control unit is connected to the display unit. This utility model provides a simple structure for visualizing bile duct stone retrieval baskets that can monitor the condition of stones in the bile duct in real time and has an adjustable camera angle. However, although the patent allows for direct observation of the bile duct environment to a certain extent through the cooperation of the imaging unit, lighting unit, transmission unit, and display unit, the environment inside the bile duct is unknown. When the basket moves inside the bile duct or during the stone removal operation, the imaging unit may be blocked by foreign objects or become dirty, which may result in unclear images and hinder the stone removal operation. Additional auxiliary instruments may be needed to clean the imaging unit, making the operation cumbersome, inconvenient, and prone to delaying the stone removal surgery.

[0004] How to solve the above problems has become an urgent technical issue. Utility Model Content

[0005] The purpose of this invention is to provide a visual stone retrieval basket that can improve the safety, efficiency and accuracy of bile duct stone removal, and reduce the difficulty of operation and learning cost.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] This utility model provides a visual stone-collecting basket, including a handle, a connector at the front end of the handle, a sheath at the front end of the connector, a basket channel inside the sheath, a basket assembly and a flushing head capable of changing the water flow direction movably mounted at the front end of the basket channel, a detection component capable of illumination and photography at the front end of the sheath near the basket assembly, an adjustment component movably mounted on the side of the handle and capable of connecting to the flushing head, a pulling component movably sleeved on the handle and capable of extending through the basket channel to the front end of the basket channel and connecting to the basket assembly, a water injection pipe communicating with the basket channel on the side of the connector, and a connecting cable for connecting an external display device and the detection component on the side of the connector.

[0008] Furthermore, a tapered mounting hole is provided at the front end of the basket channel, which is capable of movably mounting the flushing head. The flushing head includes a sleeve that can move along the length direction of the basket channel. A tapered mounting head that can cooperate with the mounting hole is provided at the front end of the sleeve. A pair of first pull bars that can be connected to the adjusting member are provided at the rear end of the sleeve. The basket assembly is movably mounted in the sleeve.

[0009] Furthermore, the basket channel is located on the lower inner side of the sheath tube, and a connection channel is provided on the upper inner side of the sheath tube. The detection component includes a mounting block located on the upper front end of the sheath tube that can be connected to the connection channel. A connection part is provided inside the mounting block. A camera and a lighting lamp are connected to the front end of the connection part. The front end of the connection line is connected to the rear end of the connection part via the connection channel. The connection line adopts a data transmission line structure.

[0010] Furthermore, the basket assembly includes a pull head movably installed within the basket channel. The front end of the pull head is connected to a basket, and the front end of the basket has a basket head that can movably cooperate with the sleeve. The front end of the basket head has an umbrella-shaped limiting head that can movably cooperate with the front end face of the assembly head. The rear end of the pull head has a second pull bar that can be connected to the front end of the pull assembly.

[0011] Furthermore, an adjustment channel is provided inside the handle along its length, and grooves that communicate with the adjustment channel are provided on both sides of the handle along its length. The pulling assembly includes a pulling sleeve fitted on the handle, pulling rings on both the upper and lower sides of the pulling sleeve, a connecting block that can be movably connected to one of the grooves inside the pulling sleeve, a pulling block that can move along the length of the adjustment channel at the front end of the connecting block, the second pulling bar connected to the front end of the pulling block, and an adjusting member movably mounted on the groove on the other side corresponding to the connecting block, with one end of the adjusting member movably fitted with the pulling block.

[0012] Furthermore, the adjusting component includes a limiting block, and a movable ring is provided at one end of the limiting block, which can extend through the slide groove into the adjusting channel and be movably sleeved on the pulling block. The first pulling strip is connected to the front end of the movable ring. An adjusting groove is provided on the handle near the upper and lower sides of the slide groove, which can be correspondingly connected with the limiting block. A limiting strip is provided in the middle of the adjusting groove.

[0013] Furthermore, both the first and second tension bars are made of tough materials.

[0014] Furthermore, a pull ring is provided at the end of the handle.

[0015] Furthermore, a scale is provided on the outer wall of the sheath along the length of the sheath.

[0016] Due to the adoption of the above structure, the beneficial effects of this utility model are as follows:

[0017] This invention relates to a visual stone retrieval basket. The sheath can be inserted into the bile duct. A detection component located at the front end of the basket channel provides illumination within the bile duct. Furthermore, the detection component can be connected to an external display device via a connecting cable to display the real-time situation within the bile duct. Therefore, it allows for direct, continuous observation of the stone condition, the bile duct environment, and the shape and position of the basket component during insertion and stone retrieval, eliminating the need for additional lighting or photographic equipment. This simplifies operation, reduces learning and usage costs, and enhances the safety and effectiveness of bile duct stone retrieval. The basket component is movably mounted within the basket channel. After the front end of the sheath is inserted to the appropriate position within the bile duct, the basket component can be released using a pulling component. Additionally, the pulling component allows for manipulation of the basket assembly. This device performs actions such as netting, grabbing, and collecting stones. The water injection pipe is connected to the basket channel for easy injection of water, saline, etc., needed for flushing. The adjustment piece on the side of the operating handle can change the posture of the flushing head at the front end of the basket channel. By changing the posture of the flushing head, the direction of the water flow sprayed from the front end of the basket channel can be changed, enabling targeted flushing of the basket assembly and the detection assembly at the front end of the sheath. This is beneficial for dealing with problems such as the detection assembly being blocked or contaminated by foreign objects. Moreover, different water spray patterns can also assist in flushing and removing foreign objects in the bile duct, improving the efficiency and accuracy of bile duct stone removal. It is also beneficial for the operator. Therefore, this utility model of a visual stone removal basket can improve the safety of bile duct stone removal, improve the efficiency and accuracy of bile duct stone removal, and help reduce the difficulty of operation and learning cost.

[0018] The present invention will become clearer from the following description and in conjunction with the accompanying drawings, which are used to explain the embodiments of the present invention. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, 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 this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of a visual stone-collecting basket according to the present invention;

[0021] Figure 2 This is a cross-sectional view of the front end of the sheath in this utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the front end of the sheath in this utility model;

[0023] Figure 4This is a schematic diagram of the flushing head in this utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the basket assembly in this utility model;

[0025] Figure 6 This is a cross-sectional view of the connector in this utility model;

[0026] Figure 7 This is a schematic diagram of the handle structure in this utility model;

[0027] Figure 8 This is a schematic diagram of the structure of the adjusting component, the pulling assembly, and the handle in this utility model.

[0028] Figure 9 This is a schematic diagram of the structure of the adjusting component in this utility model;

[0029] Figure 10 This is a schematic diagram of the structure of the adjustment component and the handle in this utility model;

[0030] Figure 11 This is a schematic diagram of the traction component in this utility model;

[0031] Figure 12 This is a schematic diagram of the structure of the pulling component and the handle in this utility model; and,

[0032] Figure 13 This is a cross-sectional view of the handle in this utility model. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Please refer to Figure 1-13This utility model provides a visual stone-collecting basket, including a handle 1, a connector 2 at the front end of the handle 1, a sheath 3 at the front end of the connector 2, a basket channel 31 inside the sheath 3, a basket assembly 4 and a flushing head 5 capable of changing the water flow direction movably mounted at the front end of the basket channel 31, a detection component 6 capable of illumination and photography at the front end of the sheath 3 near the basket assembly 4, an adjustment component 7 movably mounted on the side of the handle 1 that can connect to the flushing head 5, and a pulling component 8 movably sleeved on the handle 1 that extends through the basket channel 31 to the front end of the basket channel 31 and connects to the basket assembly 4. A [further details about the component are missing from the original text.] The system includes a water inlet pipe 21 that connects to the basket channel 31, and a connecting line 9 on the side of the connector 2 that connects to an external display device and a detection component 6. The sheath 3 can be inserted into the bile duct. The detection component 6, located at the front end of the basket channel 31, provides illumination within the bile duct. The detection component 6 can be connected to an external display device via the connecting line 9 to display the real-time condition of the bile duct. Therefore, the system allows for direct, continuous observation of the stone condition, the bile duct environment, and the shape and position of the basket component 4 during insertion and stone retrieval, without the need for additional lighting or photographic equipment. This simplifies operation and reduces learning and usage costs. This system can improve the safety and effectiveness of biliary stone removal. The basket assembly 4 is movably installed within the basket channel 31. After the front end of the sheath 3 is inserted into the appropriate position within the biliary tract, the basket assembly 4 can be released via the pulling assembly 8. Furthermore, the pulling assembly 8 allows the basket assembly 4 to be operated to perform actions such as netting, grabbing, and storing the stones. The water injection pipe 21 is connected to the basket channel 31 for convenient injection of water, saline solution, etc., required for flushing. The adjustment piece 7 on the side of the operating handle 1 can change the posture of the flushing head 5 at the front end of the basket channel 31. Changing the posture of the flushing head 5 alters the direction of the water flow after spraying from the front end of the basket channel 31, allowing for separate application of the flushing head to the stones. The basket assembly 4 and the front end detection assembly 6 of the sheath 3 are subjected to targeted flushing, which helps to deal with problems such as obstruction or contamination of the detection assembly 6 by foreign objects. Different water jet spraying methods can also assist in flushing and removing foreign objects in the bile duct, improving the efficiency and accuracy of bile duct stone removal, avoiding delays in stone removal surgery, reducing patient injury, and facilitating operation. The front end of the sheath 3 adopts a flexible bending structure, which is conducive to the insertion of the sheath 3 into the bile duct, and the sheath 3 can maintain the patency of its internal basket channel 31 when fully bent, improving the convenience of the operation. The outer surface of the sheath 3 can be coated, and the surface coating material of the sheath 3 can be polyvinylpyrrolidone.

[0035] In this invention, a tapered mounting hole 310 for movably mounting a flushing head 5 is provided at the front end of the basket channel 31. The flushing head 5 includes a sleeve 51 that can move along the length of the basket channel 31. A tapered mounting head 52 that can mate with the mounting hole 310 is provided at the front end of the sleeve 51. A pair of first pull bars 53 that can be connected to the adjusting member 7 are provided at the rear end of the sleeve 51. The basket assembly 4 is movably mounted inside the sleeve 51. The basket assembly 4 includes a pull head 41 that can be movably mounted inside the basket channel 31. A net basket 42 is connected to the front end of the pulling head 41. A net basket head 43, capable of movably engaging with the sleeve 51, is located at the front end of the net basket 42. A limiting head 431, with an umbrella-shaped structure, is located at the front end of the net basket head 43, capable of movably engaging with the front face of the assembly head 52. A second pulling bar 44, capable of connecting to the front end of the pulling assembly 8, is located at the rear end of the pulling head 41. Both the first pulling bar 53 and the second pulling bar 44 are made of resilient material. The net basket head 43, driven by the second pulling bar 44, moves along the sleeve 51... The sleeve 51 moves back and forth within the basket channel 31. Simultaneously, the first pull bar 53 can push and pull the sleeve 51, thereby changing the position of the sleeve 51 and the assembly head 52 within the basket channel 31. When the assembly head 52 contacts and engages with the assembly hole 310, the water flow within the basket channel 31 can pass through the sleeve 51 and exit in a straight line, thus completing the rinsing of the basket assembly 4. When the basket head 43 engages with the assembly head 52, the first pull bar 53 can push the sleeve 51 along with the assembly head 52 out of the basket channel 31. At a certain distance, the water in the basket channel 31 passes through the gap between the outer wall of the sleeve 51 and the inner wall of the basket channel 31. Thus, the water flow sprayed out through the front mounting hole 310 of the basket channel 31 is guided by the conical mounting head 52 to be sprayed out in a circumferential direction. This can change the direction of water flow to rinse the detection component 6 at the front end of the sheath tube 3. The operation is convenient. The first traction bar 53 and the second traction bar 44 are both made of medical guide wire structure and can be made of alloy material. They have a certain toughness and torsional control, which is beneficial to medical staff.

[0036] In this invention, the basket channel 31 is located on the lower inner side of the sheath tube 3, and a connecting channel 32 is located on the upper inner side of the sheath tube 3. The detection component 6 includes a mounting block 61 located on the upper front end of the sheath tube 3, which can be connected to the connecting channel 32. A connecting part 62 is located inside the mounting block 61. A camera 63 and a lighting lamp 64 are connected to the front end of the connecting part 62. The front end of the connecting line 9 is connected to the rear end of the connecting part 62 via the connecting channel 32. The connecting line 9 adopts a data transmission line structure. The connecting line 9 is connected to the camera 63 and the lighting lamp 64 via the connecting part 62. The camera 63 can adopt a miniature endoscope camera structure, and the lighting lamp 64 can adopt a miniature lighting lamp structure. Thus, the camera 63 and the lighting lamp 64 installed on the front end of the sheath tube 3 via the mounting block 61 can realize illumination and photography in the bile duct. The connecting line 9 can be connected to an external display to observe the environment inside the bile duct in real time, realizing full-process visualization operation, which is conducive to the smooth performance of bile duct stone removal, avoids delaying the stone removal operation time, and improves the efficiency and accuracy of bile duct stone removal.

[0037] In this invention, an adjustment channel 11 is provided inside the handle 1 along its length. Slide grooves 12, communicating with the adjustment channel 11, are provided on both sides of the handle 1 along its length. The pulling assembly 8 includes a pulling sleeve 81 fitted onto the handle 1. Pulling rings 82 are provided on both the upper and lower sides of the pulling sleeve 81. A connecting block 83, movably connected to one side of the slide groove 12, is provided on one side of the pulling sleeve 81. A pulling block 84, movable along the length of the adjustment channel 11, is provided at the front end of the connecting block 83. A second pulling bar 44 is connected to the front end of the pulling block 84. An adjusting member 7 is movably mounted on the other side of the slide groove 12 corresponding to the connecting block 83. One end of the adjusting member 7 is connected to the sliding groove 12. Pull blocks 84 are movably fitted together; a pull ring 15 is connected to the end of the handle 1; the pull ring 15 and the pull ring 82 are designed to facilitate the operator to move the pull sleeve 81 fitted on the handle 1. After moving the pull sleeve 81, the connecting block 83 can be moved in the slide groove 12, so the connecting block 83 drives the pull block 84 to move back and forth in the adjustment channel 11. In turn, the pull block 84 can drive the pull head 41, the net basket 42, the net basket head 43 and the second pull bar 44 to move together, so as to achieve the pulling effect on the net basket head 43. The adjusting part 7 is movably connected to the slide groove 12 on the other side and the interior of the adjusting part 7 is movably fitted together with the pull block 84, so the adjusting part 7 and the pull block 84 can move back and forth independently without interfering with each other when they are in motion.

[0038] In this invention, the adjusting component 7 includes a limiting block 71. At one end of the limiting block 71 is a movable ring 72 that extends through the slide groove 12 into the adjusting channel 11 and is movably fitted onto the pulling block 84. A first pulling strip 53 is connected to the front end of the movable ring 72. An adjusting groove 13 is provided on the handle 1 near the upper and lower sides of the slide groove 12, which corresponds to and engages with the limiting block 71. A limiting strip 14 is provided in the middle of the adjusting groove 13. The limiting block 71 can move back and forth on the adjusting groove 13 and pass through... Once the limiting strip 14 is fixed, multiple limiting strips 14 on the adjustable groove 13 can be set to meet different gear requirements. By adjusting the gear, the position of the movable ring 72 in the adjusting channel 11 can be controlled. Thus, the movable ring 72 can control the position of the front sleeve 51 of the first pulling strip 53 in the basket channel 31 via the first pulling strip 53. The movable ring 72 and the pulling block 84 are movably connected, which can prevent the movable ring 72 from interfering with the pulling block 84 when it moves, and achieve independent movement of each.

[0039] In this invention, a scale 33 is provided on the outer wall of the sheath 3 along the length of the sheath 3; the accuracy of the scale 33 is 1mm. The scale 33 can help medical staff observe and judge the insertion depth of the sheath 3, and is convenient to use.

[0040] In practical use, the appropriate size and type of mesh basket 42 is selected and installed according to the requirements. The connecting cable 9 is connected to the external display, and the camera 63 and the lighting lamp 64 are turned on. With the cooperation of the camera 63 and the lighting lamp 64, the sheath tube 3 is inserted into the patient's bile duct. After reaching the stone removal area in the patient's bile duct, according to the real-time image captured by the camera 63, the medical staff operates the traction ring 82 and the pull ring 15 to move the traction sleeve 81 on the handle 1. Then, under the action of the second traction bar 44, the mesh basket head 43 and the mesh basket 42 are gradually released and unfolded through the assembly hole 310 at the front end of the mesh basket channel 31. Then, according to the real-time image, the position of the traction sleeve 81 is moved back and forth on the handle 1 to unfold or retract the mesh basket 42, and the stone removal operation can be performed normally. When there are stains on the outer surface of the camera 63, the limiting block 71 on the adjustment groove 13 is moved to the appropriate position. The assembly head 52 is positioned a certain distance away from the assembly hole 310. Water injected through the water injection pipe 21 can then pass through the gap between the outer wall of the sleeve 51 and the inner wall of the basket channel 31 and flow circumferentially under the guidance of the conical assembly head 52, thus rinsing the camera 63. When the basket 42 needs to be cleaned, the limiting block 71 on the adjustment groove 13 is adjusted to make the assembly head 52 engage with the assembly hole 310. Water injected through the water injection pipe 21 can then pass through the sleeve 51 and be ejected from the front end of the sleeve 51 in a straight flow, thus rinsing the basket 42 and the basket head 43. This also facilitates rinsing and cleaning foreign objects in the bile duct during stone removal. The insertion of the sheath 3 and the stone removal of the basket 42 are all visualized, which can reduce patient injury, improve stone removal efficiency and accuracy, reduce the frequent exchange of instruments, and improve surgical convenience.

[0041] The preferred embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above. Devices and structures not described in detail herein should be understood as being implemented in a conventional manner within the art. Any person skilled in the art can make many possible variations and modifications to the technical solutions of this utility model using the disclosed methods and techniques, or modify them into equivalent embodiments with equivalent changes, without departing from the scope of the technical solution of this utility model. This does not affect the essential content of this utility model. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the content of the technical solution of this utility model, still fall within the protection scope of the technical solution of this utility model.

Claims

1. A visual stone-collecting basket, characterized in that: The device includes a handle (1), a connector (2) at the front end of the handle (1), a sheath (3) at the front end of the connector (2), a basket channel (31) inside the sheath (3), a basket assembly (4) and a flushing head (5) movably mounted at the front end of the basket channel (31), a detection component (6) that can provide illumination and photography at the front end of the sheath (3) near the basket assembly (4), an adjustment component (7) movably mounted on the side of the handle (1) that can connect to the flushing head (5), a pulling component (8) movably mounted on the handle (1) that can extend through the basket channel (31) to the front end of the basket channel (31) and connect to the basket assembly (4), a water injection pipe (21) that can communicate with the basket channel (31) on the side of the connector (2), and a connecting line (9) that can connect an external display device and the detection component (6) on the side of the connector (2).

2. The visual stone-retrieving basket according to claim 1, characterized in that: A tapered mounting hole (310) for movably mounting the flushing head (5) is provided at the front end of the basket channel (31). The flushing head (5) includes a sleeve (51) that can move along the length of the basket channel (31). A tapered mounting head (52) that can cooperate with the mounting hole (310) is provided at the front end of the sleeve (51). A pair of first pull bars (53) that can be connected to the adjusting member (7) are provided at the rear end of the sleeve (51). The basket assembly (4) is movably mounted in the sleeve (51).

3. The visual stone-retrieving basket according to claim 2, characterized in that: The basket channel (31) is located on the lower side inside the sheath (3), and a connecting channel (32) is provided on the upper side inside the sheath (3). The detection component (6) includes a mounting block (61) located on the upper front end of the sheath (3) that can be connected to the connecting channel (32). A connecting part (62) is provided inside the mounting block (61). A camera (63) and a lighting lamp (64) are connected to the front end of the connecting part (62). The front end of the connecting line (9) is connected to the rear end of the connecting part (62) via the connecting channel (32). The connecting line (9) adopts a data transmission line structure.

4. The visual stone-retrieving basket according to claim 3, characterized in that: The basket assembly (4) includes a pull head (41) that can be movably installed in the basket channel (31). The front end of the pull head (41) is connected to a basket (42). The front end of the basket (42) is provided with a basket head (43) that can be movably engaged with the sleeve (51). The front end of the basket head (43) is provided with a limiting head (431) with an umbrella-shaped structure that can be movably engaged with the front end face of the assembly head (52). The rear end of the pull head (41) is provided with a second pull bar (44) that can be connected to the front end of the pull assembly (8).

5. A visual stone-retrieving basket according to claim 4, characterized in that: An adjustment channel (11) is provided inside the handle (1) along the length direction of the handle (1). Slide grooves (12) that can communicate with the adjustment channel (11) are provided on both sides of the handle (1) along the length direction of the handle (1). The pulling assembly (8) includes a pulling sleeve (81) sleeved on the handle (1). Pulling rings (82) are provided on both the upper and lower sides of the pulling sleeve (81). A connecting block (83) that can be movably connected to one of the slide grooves (12) is provided on one side of the inner side of the pulling sleeve (81). A pulling block (84) that can move along the length direction of the adjustment channel (11) is provided at the front end of the connecting block (83). The second pulling bar (44) is connected to the front end of the pulling block (84). The adjusting member (7) is movably mounted on the slide groove (12) on the other side corresponding to the connecting block (83). One end of the adjusting member (7) is movably sleeved with the pulling block (84).

6. A visual stone-retrieving basket according to claim 5, characterized in that: The adjusting component (7) includes a limiting block (71). At one end of the limiting block (71) is a movable ring (72) that can extend through the slide groove (12) into the adjusting channel (11) and be movably fitted onto the pulling block (84). The first pulling strip (53) is connected to the front end of the movable ring (72). On the handle (1) near the upper and lower sides of the slide groove (12), there is an adjusting groove (13) that can be correspondingly connected with the limiting block (71). A limiting strip (14) is provided in the middle of the adjusting groove (13).

7. A visual stone-collecting basket according to claim 6, characterized in that: Both the first tension bar (53) and the second tension bar (44) are made of tough materials.

8. A visual stone-collecting basket according to claim 7, characterized in that: A pull ring (15) is connected to the end of the handle (1).

9. A visual stone-collecting basket according to claim 8, characterized in that: A scale (33) is provided on the outer wall of the sheath (3) along the length direction of the sheath (3).

Images