Biliary retrieval guidewire device

Abstract

The application discloses a biliary tract object-taking guide wire device and belongs to the technical field of biliary tract object taking. The device adopts the following technical scheme: a traction assembly composed of a plurality of traction members arranged in sequence, wherein the traction members are in tubular structures, the same side ends of every two adjacent traction members are rotationally connected, the traction assembly composed of the plurality of traction members can be bent and adjusted in two directions, a handle capable of controlling the traction assembly to bend and adjust is arranged at the end of the traction assembly, a control assembly capable of controlling the traction assembly to bend is arranged in the handle, the plurality of traction members are wrapped with guide wire sleeves outside, and the traction assembly is provided with an object-taking assembly at the front end. In the application, the traction assembly composed of the plurality of traction members rotationally connected in sequence is matched with the control assembly in the handle, active and continuous bending adjustment of the front end of the guide wire in two directions is realized, the operator can easily control the traction assembly and the guide wire sleeve to move along the curved track of the biliary tract by rotating the rotating wheel, and the problems of the traditional guide wire, such as difficulty in turning in the complex biliary tract and the sharp end abutting against the wall, are effectively solved.

Description

Technical Field

[0001] This invention relates to the field of biliary tract retrieval technology, and more particularly to a biliary tract retrieval guidewire device. Background Technology

[0002] In biliary surgery and endoscopic interventional treatment, biliary retrieval is a common procedure, such as removing common bile duct stones, biliary parasites, necrotic tissue, or postoperative residues. Existing biliary retrieval instruments, such as stone retrieval baskets and forceps, usually require the use of an endoscope or are inserted under guidewire guidance.

[0003] However, the human bile duct has multiple bends and angle changes. Traditional retrieval guidewires are mostly single-wire structures, which, although flexible, make it difficult for surgeons to actively and precisely control the bending direction of their tip from outside the body. The opening direction of retrieval forceps or baskets is often fixed or can only be deflected in one direction. When encountering sharp bends or narrow areas, problems such as the guidewire tip hitting the wall, difficulty in turning, and inability to align with the target foreign object often occur, increasing the difficulty and time of the operation. Therefore, existing bile duct retrieval instruments have limitations in practical applications. Summary of the Invention

[0004] This invention provides a biliary tract retrieval guidewire device to solve the aforementioned technical problems.

[0005] The present invention employs the following technical solution: a traction assembly consisting of multiple sequentially arranged traction components, wherein each pair of adjacent traction components has a beveled cut at the non-connecting portion on the same side; the traction component is a tubular structure, and the ends of each pair of adjacent traction components are rotatably connected, enabling the traction assembly consisting of multiple traction components to bend in both left and right directions; a handle for controlling the bending adjustment of the traction assembly is provided at the end of the traction assembly; and a control component for manipulating the bending of the traction assembly is provided inside the handle. The outer casing of multiple traction components is provided with a guide wire sleeve, and the overall outer diameter of the guide wire sleeve and the traction components is smaller than the inner diameter of the bile duct; the two ends of the guide wire sleeve are fixedly connected to the outer sides of the front and rear two traction components in the traction assembly, respectively; the front end of the traction assembly is provided with a retrieval component.

[0006] Furthermore, a fixing block is provided inside the foremost traction component of the traction assembly. The outer wall of the fixing block is fixedly connected to the inner wall of the traction component at that location. The fixing block is provided with multiple through slots, one of which houses a miniature camera. Each of the remaining traction components is fixedly provided with a fixing plate, which is also provided with through slots for placing the connecting lines of the miniature camera.

[0007] Furthermore, two limiting blocks are symmetrically arranged on both sides of the inner wall of each traction component. The two limiting blocks are staggered at ninety degrees with the adjacent traction component at the rotational connection part inside the corresponding traction component. Each limiting block is provided with a through hole.

[0008] Furthermore, the control component includes a support column, a partition, two dials, and two traction lines. The partition is vertically arranged inside the handle, and the two dials are symmetrically arranged on both sides of the partition with a certain gap between them. The two dials are concentrically aligned with the partition. The support column is horizontally placed at the center of the partition and the two dials. The support column is fixedly connected to the partition and the two dials, and both ends of the support column are rotatably connected to the inner wall of the handle. The ends of the two traction lines are fixedly connected to the pillars at the gaps on both sides of the two dials and the partition plate, respectively. After the two traction lines are wound around the pillars in opposite directions several times, the front ends of the two traction lines extend from the handle into the traction assembly from the end to the front end. They then pass through the through holes on the two limit blocks in the multiple traction components in sequence, and are then fixedly connected to the two limit blocks in the foremost traction component of the traction assembly. The insertion trajectory of the two traction lines in the traction assembly is a straight line.

[0009] Furthermore, the handle has slots on both sides corresponding to the partition plate and the two dials, which allow the outer edges of the partition plate and the two dials to protrude from the handle.

[0010] Furthermore, among the multiple through slots on the fixing block, in addition to the miniature camera, the other through slots are respectively equipped with miniature lighting lamps and object retrieval components. The miniature lighting lamps are electrically connected to the matching power supply devices through a circuit, which passes through the through slots on the fixing plate and is electrically connected to the matching power supply devices.

[0011] Furthermore, the retrieval assembly includes a retrieval clamp, a pad, a traction rod, and a retrieval sleeve. Multiple through slots are provided on each fixed plate. Except for the slot for the miniature camera, the remaining through slots are used for electrical connection lines between the miniature lighting and power supply equipment, as well as for the placement of the retrieval sleeve. The pad and retrieval clamp can move within the through slots of the fixed plates. The retrieval sleeve passes through the through slots of multiple fixed plates in a straight line. The front end of the retrieval sleeve is fixedly connected to the fixed block in the foremost traction component. The traction rod is located inside the retrieval sleeve, and its outer diameter is smaller than the inner diameter of the retrieval sleeve. The front end of the traction rod is fixedly connected to the rear end of the pad. An adjustment plate is fixedly installed at the end of the traction rod. A tension spring is sleeved on the traction rod, located between the pad and the retrieval sleeve, with both ends of the spring fixedly connected to the pad and the retrieval sleeve, respectively. Under the tension of the spring, the pad and retrieval clamp can be pulled towards the retrieval sleeve.

[0012] Furthermore, the object retrieval clamp consists of two elastic clamps. The ends of the clamps are fixedly connected to the pad. There is a certain gap between the two clamps, and they open to the upper and lower sides in their natural state, so that the gap area in the middle can be used to retrieve foreign objects from the bile duct. After being squeezed, the outer parts of the two clamps can bring the two clamps closer to each other. The front ends of the two clamps are bent inward.

[0013] Furthermore, the adjusting plate is vertically positioned within the traction component at the very end of the traction assembly. The adjusting plate can move forward within the traction component to drive the object retrieval clamp to extend out of the through groove of the fixed block. The traction component and the end of the guide wire sleeve at this location are provided with sliding grooves at the upper and lower ends of the adjusting plate, allowing the two ends of the adjusting plate to protrude. The length of the sliding groove is the same as the movable distance of the control block. The two ends of the adjusting plate pass through the sliding grooves of the corresponding traction components, and both ends of the adjusting plate are fixedly provided with sliders that can be pushed by the fingers.

[0014] The above-described at least one technical solution adopted in the embodiments of the present invention can achieve the following beneficial effects: The traction assembly of this invention, consisting of multiple sequentially rotatably connected traction components, in conjunction with the control component inside the handle, enables active and continuous bending adjustment of the guidewire tip in both left and right directions. The surgeon can easily control the traction assembly and guidewire cannula to move along the bending trajectory of the bile duct by turning the dial, effectively solving the problems of traditional guidewires being difficult to turn in complex bile ducts and the tip hitting the wall.

[0015] The object retrieval assembly of this invention employs a linkage structure consisting of two elastic clamping plates, a retrieval block, a traction rod, a retrieval sleeve, and a tension spring. When the traction rod is moved forward by controlling the slider and adjusting plate, the clamping plates extend out of the slot of the fixing block and open. During retraction, the clamping plates are squeezed together by the inner wall of the slot, achieving a stable grip on the foreign object. Especially for small foreign objects, they can be completely retracted into the slot, effectively preventing the foreign object from falling off due to collision during the guide wire withdrawal process.

[0016] In this invention, two traction lines are wound in opposite directions on the support column. When the pulley drives the support column to rotate, one traction line is wound up, causing the inner arc side of the traction component to bend, while the other traction line is released simultaneously, conforming to the extension of the outer arc side. This synchronous winding and releasing mechanism avoids unnecessary tension on the other side that hinders bending when a single traction line controls the bending, ensuring smooth, sensitive, and precise bending adjustment, and effectively reducing the risk of traction line jamming or breakage. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this invention, illustrate exemplary embodiments of the invention and are used to explain the invention, but do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a schematic diagram of the external structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 This is a partial structural diagram of the present invention; Figure 4 A schematic diagram of its structure; Figure 5 This is a schematic diagram of the front-end structure of the traction component; Figure 6 This is a schematic diagram of the first state of the object retrieval component; Figure 7 This is a schematic diagram of the second state of the object retrieval component; Figure 8 This is a schematic diagram of the fixed block structure; Figure 9 Schematic diagram of the internal structure of the traction component Figure 1 ; Figure 10 Schematic diagram of the internal structure of the traction component Figure 2 ; Figure 11 Schematic diagram of the control component Figure 1 ; Figure 12 Schematic diagram of the control component Figure 2 ; Figure 13 Schematic diagram of the control component Figure 3 .

[0018] Reference numerals: traction assembly 1, traction component 11, inclined cut 12; Fixing block 13, through groove 131; Fixed plate 14, limiting block 15, through hole 151; Handle 2, Slot 21; Control component 3, support column 31, partition plate 32, dial wheel 33, traction line 34; Guide wire sleeve 4; Item retrieval component 5, item retrieval clamp 51, clamping plate 511; 52. Pad block; 53. Traction rod; 54. Retrieval sleeve; 55. Adjustment plate; 56. Tension spring; 57. Slider. Miniature camera 6; Miniature lighting 7, connecting wires 71. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0020] The technical solutions provided by the various embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0021] This invention provides a biliary tract retrieval guidewire device, including a traction assembly 1, which is composed of multiple sequentially arranged traction members 11. Each traction member 11 has a tubular structure, and the ends on the same side of every two adjacent traction members 11 are rotatably connected, allowing the traction assembly 1, composed of multiple traction members 11, to bend and adjust in both left and right directions. A handle 2 is provided at the end of the traction assembly 1 to control the bending and adjustment of the traction assembly 1. The handle 2 contains a control component 3 for manipulating the bending of the traction assembly 1. Multiple traction components 11 are externally wrapped with guide wire sleeves 4, which are tubular in shape and made of flexible waterproof material. The overall outer diameter of the guide wire sleeves 4 and the traction components 11 is smaller than the inner diameter of the bile duct. The two ends of the guide wire sleeves 4 are fixedly connected to the outer sides of the front and rear two traction components 11 in the traction assembly 1, respectively. The front end of the traction assembly 1 is provided with a retrieval component 5.

[0022] During operation, the operator can hold the handle 2 to control the entire traction assembly 1. When retrieving the object, the traction assembly 1 together with the guide wire sleeve 4 can be placed into the bile duct. The guide wire sleeve is wrapped around the outside of the traction assembly, which can protect the multiple traction components 11 inside. Moreover, by utilizing its own flexible and waterproof material characteristics, the guide wire can be bent at multiple angles when it is inserted into the bile duct and prevent bile from contacting the internal traction components 11.

[0023] During the insertion process, the traction component can be bent and adjusted by operating the control component, so that the traction component can move along the curved channel of the bile duct to the retrieval area. Then, the retrieval component 5 extends from the front end of the traction component 1 to remove the foreign body clamp, thus completing the retrieval surgery in the patient's bile duct.

[0024] Among them, the multiple sequentially arranged and rotatably connected traction components 11, after being combined into one body, can be bent in two directions and form a support inside the guidewire sleeve 4, so that the guidewire sleeve 4 can be adjusted to bend in a C-shaped trajectory. This allows the guidewire sleeve 4 to smoothly extend inward along the bending trajectory of the bile duct after being inserted into the bile duct and gradually extended inward, and enables the retrieval component 5 at the front end of the guidewire to extend into the area of ​​the foreign object to be retrieved in the bile duct. The guidewire sleeve 4, which wraps around the outside of the traction component 1, can protect the traction component 1 and prevent its interior from being invaded by fluid from the bile duct.

[0025] Secondly, each pair of adjacent traction members 11 has a beveled cut 12 on the non-connected part of the same side end; the beveled cut 12 on each traction member 11 can prevent the two adjacent traction members 11 from colliding with the same side end corresponding to the rotation direction when they are rotated and adjusted, so that the two adjacent traction members 11 can be rotated and adjusted at a larger angle.

[0026] A fixing block 13 is provided in the foremost traction component 11 of the traction assembly 1. The outer wall of the fixing block 13 is fixedly connected to the inner wall of the traction component 11 at that location. The fixing block 13 is provided with multiple through slots 131, and a miniature camera 6 is provided inside one of the through slots 131. The miniature camera 6 in this application is prior art, equipped with a matching display device and controller, and formed an electrical connection through connecting lines; Each of the remaining traction components 11 is fixedly provided with a fixing plate 14, and the fixing plate 14 is also provided with a through groove 131 for placing the connecting line 71 that is matched with the miniature camera 6.

[0027] Two limiting blocks 15 are symmetrically arranged on both sides of the inner wall of each traction member 11. The two limiting blocks 15 are staggered at ninety degrees with the adjacent traction member 11 at the rotational connection part in the corresponding traction member 11. Each limiting block 15 is provided with a through hole 151.

[0028] The control component 3 includes a support column 31, a partition 32, two dial wheels 33, and two traction lines 34. The partition 32 is vertically arranged inside the handle 2. The two dial wheels 33 are symmetrically arranged on both sides of the partition 32 and have a certain gap between them. The two dial wheels 33 and the partition 32 are concentrically corresponding. The support column 31 is horizontally placed at the center of the partition 32 and the two dial wheels 33. The support column 31 is fixedly connected to the partition 32 and the two dial wheels 33, and both ends of the support column 31 are rotatably connected to the inner wall of the handle 2. The ends of the two traction lines 34 are fixedly connected to the support columns 31 at the gaps on both sides of the two dials 33 and the partition 32, respectively. After the two traction lines 34 are wound around the support columns 31 in opposite directions several times, the front ends of the two traction lines 34 extend from the handle 2 into the traction assembly 1 from the end to the front end, and sequentially pass through the through holes 151 on the two limit blocks 15 in the multiple traction components 11, and then are fixedly connected to the two limit blocks 15 in the foremost traction component 11 in the traction assembly 1. The insertion trajectory of the two traction lines 34 in the traction assembly 1 is a straight line trajectory. In clinical practice, the bile duct is a curved channel. Therefore, the operator can hold the handle 2 and simultaneously turn the two dials 33 to rotate the support column 31. When the support column 31 rotates, one of the traction wires 34 on the support column 31 will be pulled by the rotation of the support column 31 and gradually wrap around the support column 31. At the same time, the traction wire will pull on a corresponding limiting block 15 in the foremost traction member 11. The through holes 151 on the limiting blocks 15 of the other traction members 11 corresponding to the traction wire 34 at this part are used for the traction wire 34 to pass through. As the usable length of the traction wire 34 shortens, the foremost traction member 11 of the traction assembly 1 will rotate in the direction of the contraction of the traction wire 34 and pull on the other traction members 11 to make the entire traction assembly 1 and the guide wire sleeve 4 bend and adjust. After the guide wire sleeve 4 is bent and adjusted, combined with the push of the handle 2 and the guide wire sleeve 4, the guide wire sleeve 4 can move along the curved channel of the bile duct until the retrieval area of ​​the retrieval assembly 5 reaches the foreign body site.

[0029] When the traction component 1 bends, the traction line 34 in the winding state will correspond to the inner arc edge of the traction component 1 in the bending state, while the outer arc edge of the traction component 1 in the bending state will expand due to the change in angle. The other traction line 34 corresponding to the winding traction line 34 needs to extend its service length due to the bending of the same side of the traction component 1. Therefore, the winding direction of the two traction lines 34 on the support columns 31 on both sides of the partition plate 32 is set in opposite directions, so that while one traction line 34 is winding, the other traction line 34 can be released at the same time. As the support column 31 rotates clockwise, the other traction line 34 that was originally wound several times on the support column 31 will be gradually released under the rotation drive of the support column 31, and the service length of the traction line 34 will be extended, so that the outer arc edge of the traction component 1 in the bending state will not be unable to bend and be obstructed due to the pulling of the corresponding traction line 34. In clinical applications, simply rotating the dial 33 clockwise or counterclockwise controls the bending adjustment of the traction assembly 1 and the guide wire sleeve 4 in one direction on both sides. It also enables the synchronous operation of the two traction lines 34, which can be wound up and released at the same time, further reducing the number of steps required to bend the traction assembly 1.

[0030] The handle 2 has slots 21 on both sides corresponding to the partition 32 and the two dials 33. The slots 21 allow the outer edges of the partition 32 and the two dials 33 to be exposed from the handle 2. In clinical applications, slots 21 are provided on both sides of the handle 2 corresponding to the dial 33, so that both sides of the two dials 33 can be exposed from the handle 2, allowing the operator to use either hand to operate the dial 33 with their fingers, thus providing more ways to adjust the entire guidewire.

[0031] In the multiple through slots 131 on the fixed block 13, except for the miniature camera 6, the other through slots 131 are respectively provided with miniature lighting lamps 7 and object retrieval components 5. The miniature lighting lamps 7 and the matching power supply devices are electrically connected through a line. The line passes through the through slots 131 on the fixed plate 14 and is electrically connected to the matching power supply devices. To facilitate observation of the bile duct interior, a miniature lighting lamp 7 is provided on the fixing block 13 in this application, which can provide a light source for the observation images of the miniature camera 6, so that the images can be better transmitted to the monitor for the operator to observe.

[0032] The object retrieval assembly 5 includes an object retrieval clamp 51, a pad 52, a traction rod 53, and an object retrieval sleeve 54. Multiple through slots 131 are provided on each fixed plate 14. Except for the through slot 131 where the miniature camera 6 is placed, the remaining through slots 131 are used for the electrical connection lines 71 between the miniature lighting lamp 7 and the power supply equipment, as well as for the object retrieval sleeve 54. The pad 52 and the object retrieval clamp 51 can move within the through slots 131 of the fixed plate 13. The object retrieval sleeve 54 passes through the through slots 131 of the multiple fixed plates 14 in a straight line. The front end of the object retrieval sleeve 54 is connected to the foremost traction member 11. The fixed block 13 is fixedly connected. The traction rod 53 is set inside the retrieval sleeve 54 and the outer diameter of the traction rod 53 is smaller than the inner diameter of the retrieval sleeve 54. The front end of the traction rod 53 is fixedly connected to the rear end of the pad 52. An adjustment plate 55 is fixedly installed at the end of the traction rod 53. A tension spring 56 is sleeved on the traction rod 53. The tension spring 56 is located between the pad 52 and the retrieval sleeve 54, and the two ends of the tension spring 56 are fixedly connected to the pad 52 and the retrieval sleeve 54 respectively. Under the tension of the tension spring 56, the pad 52 and the retrieval clamp 51 can be pulled towards the retrieval sleeve 54.

[0033] The object retrieval clamp 51 consists of two elastic clamping plates 511. The ends of the clamping plates 511 are fixedly connected to the pad block 52. There is a certain gap between the two clamping plates 511, and they open up and down in their natural state, so that the gap area in the middle can be used to retrieve foreign objects from the bile duct. After being squeezed, the outer parts of the two clamping plates 511 can bring the two clamping plates 511 closer to each other. The front ends of the two clamping plates 511 are bent inward.

[0034] The adjusting plate 55 is vertically arranged in the traction member 11 at the far end of the traction assembly 1. The adjusting plate 55 can move in the traction member 11 towards the front end to drive the retrieval clamp 51 to extend out of the through groove 131 of the fixed block 13. The traction member 11 and the end of the guide wire sleeve 4 are provided with sliding grooves for the two ends of the adjusting plate 55 to be exposed. The length of the sliding groove is the same as the movable distance of the control block. The two ends of the adjusting plate 55 pass through the sliding grooves of the corresponding traction member 11, and the two ends of the adjusting plate 55 are fixedly provided with sliders 57 that can be pushed by the fingers. Once the guidewire tip reaches the foreign body site within the bile duct, the operator can push the guidewire cannula 4 forward using the slider 57. This causes the slider 57 to drive the adjusting plate 55, which in turn pushes the traction rod 53, pushing the retrieval clamp 51 on the pad 52 outward from the through groove 131 of the fixing block 13. The two clamps 511, originally within the through groove of the fixing block 13, are brought closer together by the internal compression of the fixing block 13, causing their tips to adhere to each other. As the two clamps 511 move out of the through groove of the fixing block 13, they open upward and downward on their own elasticity, creating a gap between them to grasp the foreign body. The guidewire can then be slightly... The entire assembly moves towards the foreign object, allowing the gap between the two clamping plates 511 to cover the foreign object. Then, the slider moves in the opposite direction, causing the slider to drive the control plate and the traction rod to retract the two clamping plates 511 a certain distance into the through groove of the fixing block 13. When the two open clamping plates 511 are squeezed by the inner wall of the through groove of the fixing block 13, they will approach each other, and their front ends will contact and clamp the foreign object. If the foreign object is large, the guide wire can be removed directly. If the foreign object is small, the two clamping plates 511 can be completely retracted into the through groove of the fixing block 13 to transfer the foreign object into the through groove together. This prevents small foreign objects from falling out of the clamping range of the two clamping plates when the guide wire is removed later.

[0035] Secondly, when the dial 33 is stopped, the pad 52 and the retrieval clip 51 will be pulled backward by the tension of the tension spring 56, so that the retrieval clip 51 can automatically retract into the through groove 131 of the fixing block 13.

[0036] The above are merely embodiments of the present invention and are not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A guidewire device for biliary tract retrieval, characterized in that, include: The traction assembly (1) consists of multiple traction components (11) arranged in sequence; The same side ends of each pair of adjacent traction members (11) are rotatably connected, so that the traction assembly (1) composed of multiple traction members (11) can be bent in both left and right directions. The handle (2), located at the end of the traction assembly (1), can control the traction assembly (1) to bend and adjust; The control component (3), located inside the handle (2), can control the traction component (1) to bend; The guide wire sleeve (4) is wrapped around the outside of multiple traction components (11); The object retrieval component (5) is located at the front end of the traction component (1).

2. The biliary tract retrieval guidewire device according to claim 1, characterized in that, Each pair of adjacent traction components (11) has a beveled cut (12) on the non-connecting part of the same side.

3. The biliary tract retrieval guidewire device according to claim 1, characterized in that, A fixing block (13) is provided inside the foremost traction component (11) of the traction assembly (1); The outer wall of the fixing block (13) is fixedly connected to the inner wall of the traction component (11) at this part. The fixing block (13) is provided with multiple through slots (131), and a miniature camera (6) is provided inside one of the through slots (131). Each of the remaining traction components (11) is fixedly provided with a fixing plate (14), and the fixing plate (14) is also provided with a through groove (131) for placing the connecting line (71) that is matched with the miniature camera (6).

4. The biliary tract retrieval guidewire device according to claim 1, characterized in that, Two limiting blocks (15) are symmetrically arranged on both sides of the inner wall of each traction component (11); Two limiting blocks (15) are staggered at ninety degrees with the adjacent traction member (11) at the rotational connection part in the corresponding traction member (11), and each limiting block (15) is provided with a through hole (151).

5. The biliary tract retrieval guidewire device according to claim 1, characterized in that, The control component (3) includes a support (31), a partition (32), two dials (33) and two traction lines (34). The partition (32) is vertically arranged inside the handle (2); Two dials (33) are symmetrically arranged on both sides of the partition plate (32) and a certain gap is left between them. The two dials (33) and the partition plate (32) are concentrically corresponding. The support column (31) is horizontally placed at the center of the partition plate (32) and the two dials (33). The support column (31) is fixedly connected to the partition plate (32) and the two dials (33), and both ends of the support column (31) are rotatably connected to the inner wall of the handle (2). The ends of the two traction lines (34) are fixedly connected to the support column (31) at the gap between the two dials (33) and the two partitions (32), respectively. After the two traction lines (34) are wound around the support column (31) several times in opposite directions, the front ends of the two traction lines (34) extend from the handle (2) into the traction assembly (1) from the end to the front end, and sequentially pass through the through holes (151) on the two limit blocks (15) in the multiple traction components (11), and then are fixedly connected to the two limit blocks (15) in the foremost traction component (11) in the traction assembly (1).

6. The biliary tract retrieval guidewire device according to claim 1, characterized in that, The handle (2) has slots (21) on both sides corresponding to the partition (32) and the two dials (33), which allow the outer sides of the partition (32) and the two dials (33) to be exposed from the handle (2).

7. The biliary tract retrieval guidewire device according to claim 1, characterized in that, In the multiple through slots (131) on the fixed block (13), except for the miniature camera (6), the other through slots (131) are respectively equipped with miniature lighting lamps (7) and object retrieval components (5).

8. The biliary tract retrieval guidewire device according to claim 1, characterized in that, The object retrieval assembly (5) includes an object retrieval clamp (51), a pad (52), a traction rod (53), and an object retrieval sleeve (54); Each fixed plate (14) has multiple through slots (131). Except for the through slot (131) where the miniature camera (6) is placed, the other through slots (131) are used for the electrical connection lines (71) between the miniature lighting lamp (7) and the power supply equipment, as well as for the placement of the retrieval sleeve (54). The pad (52) and the retrieval clamp (51) can move within the through groove (131) of the fixed block (13); The retrieval sleeve (54) is installed in a straight line through the through groove (131) of multiple fixed plates (14), and the front end of the retrieval sleeve (54) is fixedly connected to the fixed block (13) in the foremost traction member (11). The traction rod (53) is set inside the retrieval sleeve (54) and the outer diameter of the traction rod (53) is smaller than the inner diameter of the retrieval sleeve (54). The front end of the traction rod (53) is fixedly connected to the rear end of the pad (52). An adjustment plate (55) is fixedly installed at the end of the traction rod (53), and a tension spring (56) is sleeved on the traction rod (53). The tension spring (56) is located between the pad (52) and the retrieval sleeve (54), and the two ends of the tension spring (56) are fixedly connected to the pad (52) and the retrieval sleeve (54) respectively. Under the pulling force of the tension spring (56), the pad (52) and the retrieval clamp (51) can be pulled towards the retrieval sleeve (54).

9. The biliary tract retrieval guidewire device according to claim 1, characterized in that, The object retrieval clamp (51) consists of two elastic clamps (511), and the ends of the clamps (511) are fixedly connected to the pad block (52). There is a certain gap between the two clamps (511) and they open up and down in the natural state, so that the gap area in the middle can be used to clamp foreign objects in the bile duct. After the outer parts of the two clamps are squeezed, the two clamps can be brought closer to each other. The front ends of the two clamps are bent inward.

10. The biliary tract retrieval guidewire device according to claim 1, characterized in that, The adjusting plate (55) is vertically positioned inside the traction member (11) at the very end of the traction assembly (1). The adjusting plate (55) can move towards the front end within the traction member (11) to drive the retrieval clamp (51) to extend out from the through groove (131) of the fixed block (13). The traction member (11) and the end of the guide wire sleeve (4) are provided with grooves at the upper and lower ends of the adjusting plate (55) to expose the two ends of the adjusting plate (55). The length of the groove is the same as the movable distance of the control block. The two ends of the adjusting plate (55) pass through the grooves of the corresponding traction member (11) respectively, and both ends of the adjusting plate (55) are fixedly provided with sliders (57) that can be pushed by the fingers.

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