Bending-adjustable conveying device

Abstract

The utility model discloses a bending-adjustable conveying device. The bending-adjustable conveying device comprises a first conveying part, a second conveying part and a third conveying part, coaxial passages are arranged in the first conveying part, the second conveying part and the third conveying part, a pipe body is accommodated in the passages, a control wire is arranged at the head end of the pipe body, and the pipe body penetrates through the passages to sequentially connect the first conveying part, the second conveying part and the third conveying part in the conveying direction of the pipe body. The first conveying part, the second conveying part and the third conveying part drive the head end of the tube body to be bent and adjusted by adjusting the control wire, the angle of the head end of the tube body can be adjusted to adapt to a blood vessel bending route, and a lesion position can be reached more easily. The problem that in the prior art, due to the fact that the angle shape of the head end of the tube body is different from the bending angle of the blood vessel, the lesion position cannot be accurately reached is well solved, and good clinical significance is achieved.

Description

Technical Field

[0001] The utility model relates to the field of interventional treatment, in particular to an adjustable bend delivery device. Background Art

[0002] Interventional therapy is an emerging treatment method between surgery and internal medicine, including intravascular intervention and non-vascular intervention. After more than 30 years of development, it has now become one of the three pillar disciplines along with surgery and internal medicine. During intravascular interventional therapy, due to the differences in human anatomical structure and the complexity of vascular curvature, doctors often need to alternately use interventional catheters of different shapes to establish a channel between the lesion location in the patient's body and the outside of the body to facilitate subsequent treatment, and even require temporary steam shaping to obtain a catheter with a curved angle at the tip. This operation is not only time-consuming and labor-intensive, increasing the doctor's operating time and the patient's medical expenses, but also due to the inadaptability of the curved angle of the catheter tip, the surgery cannot achieve better treatment results.

[0003] In actual use, doctors use interventional catheters of different shapes alternately to establish a channel between the lesion site in the patient's body and the outside of the body due to problems with the distal angle of the catheter. Some even require temporary steam shaping to obtain a catheter with a curved angle at the tip. This is time-consuming and laborious, increases the doctor's operation time, and increases the patient's medical expenses. In addition, due to the inadaptability of the curved angle of the catheter tip, the operation may not achieve better therapeutic results. Utility Model Content

[0004] In view of the above technical problems, the utility model provides an adjustable bending conveying device, comprising: a first conveying part, a second conveying part and a third conveying part;

[0005] A coaxial passage is provided inside the first conveying part, the second conveying part and the third conveying part, a tube body is accommodated in the passage, a control wire is provided at the head end of the tube body, the tube body passes through the passage to sequentially connect the first conveying part, the second conveying part and the third conveying part along the conveying direction of the tube body, and the first conveying part, the second conveying part and the third conveying part drive the head end of the tube body to bend and adjust by adjusting the control wire.

[0006] Most of the existing interventional delivery devices only use one delivery part, and the adjustment is relatively simple. The utility model uses three-section delivery parts to deliver the interventional tube in the body. The three delivery parts can make more precise bending adjustments to the tube body at multiple angles.

[0007] Preferably, the tube body includes a first tube body, a second tube body and a third tube body whose diameters decrease successively, and the fixed ends of the three are respectively arranged on the first conveying part, the second conveying part and the third conveying part, and the control wire includes a first control wire, a second control wire and a third control wire, and the head ends of the three are respectively connected to the head ends of the first tube body, the second tube body and the third tube body.

[0008] The three conveying parts of the utility model correspond to three tube bodies respectively, and the bending angle of the head end thereof is controlled by three different control wires. The control wires are made of metal wires or braided ropes that cannot be stretched or deformed. Therefore, once the control wires are pulled, the head end of the tube body will inevitably be tightened downward, forcing it to bend downward, thereby obtaining the required bending angle to pass through the changeable vascular environment.

[0009] The segmented control method of the utility model can more conveniently adapt to the complex conditions of human blood vessels, can perform more delicate and flexible operations in complex in vivo environments, improves applicability and flexibility, and can also reduce the discomfort of patients caused by interventional treatment, thereby improving the comfort and safety of patients.

[0010] Preferably, the second conveying part has the same structure as the first conveying part, and the first conveying part includes a handle shell, a rotating shell sleeved on the waist of the handle shell, an adjustment component arranged inside the handle shell, and a hemostatic valve arranged below the adjustment component, the hemostatic valve is connected to the first tube body and is inserted into the lower end of the handle shell, and the rotation of the rotating shell drives the adjustment component to adjust the bending of the head end of the first tube body.

[0011] The rotating shell of the utility model is sleeved on the handle shell. Compared with the rotating structure provided on one side or other parts of the handle shell in the prior art, it is more ergonomic and easier for the user to perceive the direction of the catheter head end. The user can more intuitively perceive the rotation of the rotating shell and the corresponding direction of the catheter head end, thereby more accurately controlling the bending angle, improving the accuracy and reliability of the operation, reducing unnecessary twisting and inconvenience of the user's hand, reducing the user's fatigue, and improving the comfort and efficiency of the operation. In addition, it is not easy to touch by mistake. The rotating shell and the handle shell are coaxially arranged, which reduces the shaking and instability factors that may occur during the operation of rotating the rotating shell, and is conducive to maintaining the stable state of the conveying part.

[0012] Preferably, the adjustment assembly includes a threaded slider, a connecting tube, a connecting rod, an indicating slider and a tail end sleeve, the threaded slider is sleeved on the connecting tube, the indicating slider is sleeved on the tail end sleeve, the connecting rod connects the threaded slider and the indicating slider, the inner wall of the rotating shell is provided with an internal thread, the internal thread is adapted to the threaded slider to drive the threaded slider to move up and down along the connecting tube.

[0013] The utility model converts the rotation of the rotating shell into the linear motion of the threaded slider, which can achieve small adjustments. The number of rotations is converted into the linear movement distance. The linear movement tightens or stretches the control wire, and the control wire then pulls the head end of the catheter to bend and deform. If the control wire is directly contracted by winding in a rotating manner, the catheter head end will suddenly have an unexpected twist or movement after the control wire is wound to a certain number of turns. This jump may cause a sudden change in the position or direction of the catheter head end, thereby affecting the accuracy and controllability of the operation.

[0014] Preferably, an inner sleeve is provided in the connecting tube, and the inner sleeve has a tube cavity that accommodates and fixes the end of the first tube body. The inner sleeve has a tube wall provided with a through groove, the connecting tube has a No. 1 through hole, the upper end surface of the threaded slider has a No. 2 through hole, and the tail end of the first control wire passes through the through groove, the No. 1 through hole and the No. 2 through hole in sequence and is connected to the connecting rod.

[0015] The first control wire controls the bending deformation of the head end of the first tube body. The first control wire is arranged on the tube wall of the first tube body, which can be the inner wall or the outer wall. The rotation of the rotating shell drives the threaded slider to move downward. Since it is connected to the indicating slider through a connecting rod, the indicating slider and the connecting rod will also move downward accordingly. The tail end of the first control wire is fixed on the connecting rod, so that the head end of the first tube body will be tightened as the connecting rod moves downward, thereby realizing the bending of the head end.

[0016] Preferably, the third delivery portion includes a housing, a three-pronged Luer connector and an elastic component, the three-pronged Luer connector includes a main connector and two side connectors, the main connector is connected to the fixed end of the third tube body, one of the side connectors accommodates a third control wire, and the tail end of the third control wire passes through the side connector and is connected to the elastic component.

[0017] The utility model adopts a three-pronged Luer connector, which can output multiple tubes or control wires to the distal end through the same passage while achieving decentralized control at the proximal end. The other side connector of the three-pronged Luer connector can be connected to a one-way valve, which is used to flush the tube or introduce other liquids, such as heparinized saline, from the three-pronged Luer connector at this location.

[0018] Preferably, a heparin cap is provided on the main joint, the third conveying part also includes a tail end pull rod, the inner wall of the outer shell is provided with a long groove, the tail end pull rod is accommodated in the long groove, the tail end pull rod is provided with a through hole, the inner wall of the outer shell is provided with a guide plate, the guide plate is provided with a guide hole, and the center of the heparin cap, the through hole and the guide hole are aligned.

[0019] The through hole on the tail end pull rod and the guide hole on the guide plate are used to accommodate the puncture needle to penetrate therethrough, and the heparin cap facilitates repeated punctures by the puncture needle to avoid secondary infection and blood coagulation and backflow.

[0020] Preferably, the elastic component includes a T-shaped shift block, a locking pin fixedly connected to the T-shaped shift block, a pin tube accommodating the locking pin, an elastic tube arranged above the pin tube, and a wire seat accommodated inside the locking pin, the wire seat is provided with a wire hole, the third control wire is connected to the wire hole, a clamping block is provided in an annular direction on the outer periphery of the locking pin, and a clamping groove matched with the clamping block is provided on the tube wall of the pin tube.

[0021] The elastic component is used to adjust the third control wire. The locking pin and the pin tube are clamped and fixed. The T-shaped shift block can drive the locking pin, the wire seat and the pin tube to move up and down together. Since the elastic tube is made of a retractable material, the third control wire is connected to the elastic tube. Pulling the wire seat downward can compress the elastic tube, thereby tightening the third control wire and achieving the purpose of bending the head end of the third tube body.

[0022] Preferably, an L-shaped groove is provided on the shell, and the L-shaped groove is used to accommodate the T-shaped shift block to move thereon, and the L-shaped groove includes a rotating section and a sliding section, and the rotating section is a sinking groove.

[0023] The purpose of designing the rotating section with a sunken groove is to position the T-shaped shift block and prevent accidental opening that causes the elastic tube to rebound. The T-shaped shift block moves downward in the sliding section, and the elastic tube is compressed to tighten the third control wire. Since the elastic tube is retractable, in order to avoid rebound and looseness, the T-shaped shift block needs to be moved toward the rotating section to achieve locking.

[0024] Preferably, the outer wall of the connecting tube is provided with guide columns protruding to both sides, the inner wall of the threaded slider is provided with guide grooves adapted to the positions of the guide columns, the bottom end of the guide column is connected to a positioning seat, the inner wall of the handle shell is provided with two positioning rings, and the positioning seat is arranged between the two positioning rings.

[0025] The function of the guide column is to ensure the smooth up and down movement of the threaded slider.

[0026] Preferably, a positioning cover is accommodated in the lower part of the handle shell, and a limiting flange is provided on the inner wall of the positioning cover, and the limiting flange limits the longitudinal movement of the indicating slider.

[0027] There are two upper and lower limit flanges, which are used to limit the upper and lower moving distances of the indicating slider respectively.

[0028] Preferably, the outer wall of the positioning cover is provided with a mounting protrusion, and the outer wall of the lower part of the handle shell is provided with a mounting groove, and the mounting protrusion is accommodated in the mounting groove.

[0029] The mounting protrusion is arranged in the mounting groove and is used to position the positioning cover to prevent the positioning cover from moving up and down and losing the positioning function on the indicating slide block.

[0030] Preferably, the outer wall of the rotating shell is provided with anti-slip patterns for increasing friction.

[0031] The anti-slip texture can reduce slippage when turning the rotating shell, improving the user's operating feel, operating accuracy and control.

[0032] The blood vessels are complicated and varied in their curvature. The utility model can adjust the angle of the tube head to adapt to the curved route of the blood vessels and reach the lesion more easily. It solves the problem in the prior art that it is difficult to accurately reach the lesion due to the difference between the angle of the tube head and the curvature of the blood vessels, and has great clinical significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The utility model is further described below in conjunction with the accompanying drawings.

[0034] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0035] Figure 2 This is a schematic diagram of the structure of the first conveying part in the utility model;

[0036] Figure 3 It is a front cross-sectional view of the first conveying part in the utility model;

[0037] Figure 4 This is a schematic diagram of the structure of the third conveying part in the utility model;

[0038] Figure 5 It is a front cross-sectional view of the third conveying part in the utility model;

[0039] Figure 6 It is a structural schematic diagram of the threaded slider and the connecting pipe in the utility model.

[0040] The numbers in the figure represent:

[0041] 1. The first conveying part, 2. The second conveying part, 3. The third conveying part, 4. The first tube body, 5. The second tube body, 6. The third tube body, 7. The handle shell, 8. The rotating shell, 9. The threaded slider, 10. The internal thread, 11. The guide column, 12. The sliding section, 13. The tail end sleeve, 14. The limiting flange, 15. The positioning cover, 16. The indicating slider, 17. The positioning seat, 18. The connecting rod, 19. The connecting tube, 20. The first perforation, 21. The outer shell, 22. The rotating section, 23. The T-type dial block, 24. The tail end pull rod, 25. The three-pronged Luer connector, 26. The heparin cap, 27. The elastic tube, 28. The pin tube, 29. The inner sleeve, 30. The second perforation, 31. The guide groove, 32. The hemostatic valve, 33. The long groove. DETAILED DESCRIPTION

[0042] The various aspects of the utility model are further described in detail below.

[0043] Unless otherwise defined or indicated, all professional and scientific terms used herein have the same meanings as those familiar to those skilled in the art. In addition, any methods and materials similar or equivalent to those described herein can be applied to the present invention.

[0044] The utility model provides an adjustable bending conveying device, which is characterized by comprising a first conveying part 1, a second conveying part 2 and a third conveying part 3;

[0045] A coaxial passage is provided inside the first conveying part 1, the second conveying part 2 and the third conveying part 3, and a tube body is accommodated in the passage. A control wire is provided at the head end of the tube body. The tube body passes through the passage to sequentially connect the first conveying part 1, the second conveying part 2 and the third conveying part 3 along the conveying direction of the tube body. The first conveying part 1, the second conveying part 2 and the third conveying part 3 drive the head end of the tube body to bend and adjust by adjusting the control wire.

[0046] The tube body includes a first tube body 4, a second tube body 5 and a third tube body 6, whose diameters decrease successively, and the fixed ends of the three are respectively arranged on the first conveying part 1, the second conveying part 2 and the third conveying part 3, and the control wire includes a first control wire, a second control wire and a third control wire, and the head ends of the three are respectively connected to the head ends of the first tube body 4, the second tube body 5 and the third tube body 6.

[0047] The second conveying part 2 has the same structure as the first conveying part 1. The first conveying part 1 includes a handle shell 7, a rotating shell 8 sleeved on the waist of the handle shell 7, an adjusting component arranged inside the handle shell 7, and a hemostatic valve arranged below the adjusting component. The hemostatic valve 32 is connected to the first tube body 4 and is inserted into the lower end of the handle shell 7. The hemostatic valve is used to prevent blood from overflowing. The rotation of the rotating shell 8 drives the adjusting component to adjust the bending of the head end of the first tube body 4. The outer wall of the rotating shell 8 is provided with an anti-slip texture for increasing friction.

[0048] The adjustment assembly includes a threaded slider 9, a connecting tube 19, a connecting rod 18, an indicating slider 16 and a tail end sleeve 13. The threaded slider 9 is sleeved on the connecting tube 19, the indicating slider 16 is sleeved on the tail end sleeve 13, the connecting rod 18 connects the threaded slider 9 and the indicating slider 16, and the inner wall of the rotating shell 8 is provided with an internal thread 10, and the internal thread 10 is adapted to the threaded slider 9 to drive the threaded slider 9 to move up and down along the connecting tube 19. The outer wall of the connecting tube 19 is provided with a guide column 11 protruding to both sides, the inner wall of the threaded slider 9 is provided with a guide groove 31 adapted to the position of the guide column 11, the bottom end of the guide column 11 is connected with a positioning seat 17, the inner wall of the handle shell 7 is provided with two positioning rings, and the positioning seat 17 is arranged between the two positioning rings.

[0049] An inner sleeve 29 is provided in the connecting tube 19, and the end of the first tube body 4 is accommodated and fixed in the tube cavity of the inner sleeve 29. The tube wall of the inner sleeve 29 is provided with a groove, the tube wall of the connecting tube 19 is provided with a No. 1 through hole 20, and the upper end surface of the threaded slider 9 is provided with a No. 2 through hole 30. The tail end of the first control wire passes through the groove, the No. 1 through hole 20 and the No. 2 through hole 30 in sequence and is connected to the connecting rod 18.

[0050] In some embodiments, the connecting rod 18 is fixed to the second through hole 30 by gluing, and the tail end of the first control wire is also fixed to the connecting rod 18 in this way.

[0051] In some embodiments, the connecting rod 18 is a hollow rod, the top end of the connecting rod 18 is fixedly connected to the threaded slider 9 , and the first control wire passes through the connecting rod 18 and is then fixed to the indicating slider 16 .

[0052] The third conveying part 3 includes a shell 21, a three-pronged Luer connector 25 and an elastic component. The three-pronged Luer connector 25 includes a main connector and two side connectors. The main connector is connected to the fixed end of the third tube body 6, and one of the side connectors accommodates a third control wire. The tail end of the third control wire passes through the side connector and is connected to the elastic component.

[0053] In some embodiments, the other side connector of the three-pronged Luer connector 25 can be connected to a one-way valve for flushing the tube body or introducing other liquids, such as heparinized saline, from the three-pronged Luer connector 25 there.

[0054] A heparin cap 26 is provided on the main joint, and the third conveying part 3 also includes a tail end pull rod 24. A long groove 33 is provided on the inner wall of the outer shell 21, and the tail end pull rod 24 is accommodated in the long groove 33. A through hole is provided on the tail end pull rod 24, and a guide plate is provided on the inner wall of the outer shell 21. A guide hole is provided on the guide plate. The center of the heparin cap 26, the through hole and the guide hole are aligned.

[0055] The elastic component includes a T-shaped shift block 23, a locking pin fixedly connected to the T-shaped shift block 23, a pin tube 28 accommodating the locking pin, an elastic tube 27 arranged above the pin tube 28, and a wire seat accommodated inside the locking pin, the wire seat is provided with a wire hole, the third control wire is connected to the wire hole, a card block is provided in an annular direction on the outer periphery of the locking pin, and a card groove matched with the card block is provided on the tube wall of the pin tube 28.

[0056] An L-shaped groove is provided on the housing 21 , and the L-shaped groove is used to accommodate the T-shaped shift block 23 to move thereon. The L-shaped groove includes a rotating section 22 and a sliding section 12 , and the rotating section 22 is a sinking groove.

[0057] A positioning cover 15 is accommodated in the lower part of the handle shell 7 . A limiting flange 14 is provided on the inner wall of the positioning cover 15 . The limiting flange 14 limits the longitudinal movement of the indicating slider 16 .

[0058] The outer wall of the positioning cover 15 is provided with a mounting protrusion, and the outer wall of the lower part of the handle shell 7 is provided with a mounting groove, and the mounting protrusion is accommodated in the mounting groove.

[0059] In some embodiments, the positioning cover 15 is fixed to the inner wall of the handle shell 7, a longitudinal notch is formed on the positioning cover 15, and a visual window is formed on the handle shell 7 corresponding to the notch, and the movement of the indicating slider 16 on the tail end sleeve 13 can be observed through the visual window.

[0060] The first conveying part 1 and the second conveying part 2 in the utility model have the same structure, and the third conveying part 3 has a different structure from the two. The tail end of the first tube body 4 is installed on the inner sleeve 29 in the first conveying part 1, and the tail end of the second tube body 5 is also installed on the inner sleeve 29 of the second conveying part 2. The second tube body 5 is introduced from the tail end of the first conveying part 1 and passes through the head end of the first conveying part 1. The third tube body 6 is installed on the three-pronged Luer connector 25 of the third conveying part 3. Since the diameters of the three tube bodies are reduced in this way, the installed third tube body 6 can pass through the second tube body 5 and the first tube body 4, and the three conveying parts are connected in this way.

[0061] When passing through a curved and complex blood vessel, the utility model adjusts the angle of the head end of the first tube body and the second tube body so that the third tube body can smoothly pass through the first tube body and the second tube body to reach the designated position. The first control wire is connected to the head end of the first tube body 4. Tightening the first control wire can make the head end of the first tube body 4 bend downward. The first control wire is connected to the connecting rod 18 or the indicating slider 16 or the threaded slider 9. The rotation of the rotating shell 8 drives the threaded slider 9 engaged therewith to move up and down through the internal thread 10 of its inner wall. Driven by the threaded slider 9, the indicating slider 16 and the connecting rod 18 connected therewith can move up and down, thereby realizing the bending degree adjustment of the head end of the first tube body 4. The second control wire controls the bending adjustment of the second tube body 5 in the same way as the first control wire controls the first tube body 4.

[0062] The difference is that the third conveying part 3 adjusts the bending of the third tube 6. The third control wire of the third tube 6 extends from a side joint of the three-pronged Luer joint 25 and enters the elastic tube 27. The side wall of the elastic tube itself is connected to the third control wire. A pin tube 28 is provided below the elastic tube 27, and a locking pin is provided inside the pin tube 28. The locking pin is fixed to a wire seat. The tail end of the third control wire is connected to this wire seat. The elastic tube 27 is made of a retractable material. When controlling the bending of the third tube 6, the T-shaped block 23 is pushed downward along the sliding section 12 of the L-shaped groove to pull the elastic tube 27 downward for compression. The third control wire is therefore tightened downward, and the head end of the third tube 6 is bent. In order to prevent the elastic tube 27 from rebounding due to its own elasticity, the T-shaped block 23 is pushed to one side and enters the rotating section 22 for locking.

[0063] The above are only specific implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An adjustable bending conveying device, characterized in that: It includes a first conveying part, a second conveying part and a third conveying part; A coaxial passage is provided inside the first conveying part, the second conveying part and the third conveying part, a tube body is accommodated in the passage, a control wire is provided at the head end of the tube body, the tube body passes through the passage to sequentially connect the first conveying part, the second conveying part and the third conveying part along the conveying direction of the tube body, and the first conveying part, the second conveying part and the third conveying part drive the head end of the tube body to bend and adjust by adjusting the control wire.

2. The adjustable bend conveying device according to claim 1, characterized in that: The tube body includes a first tube body, a second tube body and a third tube body with successively decreasing diameters, and the fixed ends of the three are respectively arranged on the first conveying part, the second conveying part and the third conveying part; the control wire includes a first control wire, a second control wire and a third control wire, and the head ends of the three are respectively connected to the head ends of the first tube body, the second tube body and the third tube body.

3. The adjustable bend conveying device according to claim 2, characterized in that: The second conveying part has the same structure as the first conveying part. The first conveying part includes a handle shell, a rotating shell sleeved on the waist of the handle shell, an adjustment component arranged inside the handle shell, and a hemostatic valve arranged below the adjustment component. The hemostatic valve is connected to the first tube body and is inserted into the lower end of the handle shell. The rotation of the rotating shell drives the adjustment component to adjust the bending of the head end of the first tube body.

4. The adjustable bend conveying device according to claim 3, characterized in that: The adjusting assembly includes a threaded slider, a connecting tube, a connecting rod, an indicating slider and a tail end sleeve, the threaded slider is sleeved on the connecting tube, the indicating slider is sleeved on the tail end sleeve, the connecting rod connects the threaded slider and the indicating slider, the inner wall of the rotating shell is provided with an internal thread, the internal thread is adapted to the threaded slider to drive the threaded slider to move up and down along the connecting tube.

5. The adjustable bend conveying device according to claim 4, characterized in that: An inner sleeve is provided in the connecting tube, and the inner sleeve fixes the end of the first tube body. The tube wall of the inner sleeve is provided with a groove, and the tube wall of the connecting tube is provided with a No. 1 through-hole. The upper end surface of the threaded slider is provided with a No. 2 through-hole. The tail end of the first control wire passes through the groove, the No. 1 through-hole and the No. 2 through-hole in sequence and is connected to the connecting rod.

6. The adjustable bend conveying device according to claim 2, characterized in that: The third delivery portion includes a shell, a three-pronged Luer connector and an elastic component. The three-pronged Luer connector includes a main connector and two side connectors. The main connector is connected to the fixed end of the third tube body, and one of the side connectors accommodates a third control wire. The tail end of the third control wire passes through the side connector and is connected to the elastic component.

7. The adjustable bend conveying device according to claim 6, characterized in that: A heparin cap is provided at the tail of the main joint, and the third conveying part also includes a tail end pull rod. A long groove is provided on the inner wall of the outer shell, and the tail end pull rod is accommodated in the long groove. A through hole is provided on the tail end pull rod. A guide plate is provided on the inner wall of the outer shell, and a guide hole is provided on the guide plate. The center of the heparin cap, the through hole and the guide hole are aligned.

8. The adjustable bend conveying device according to claim 7, characterized in that: The elastic component includes a T-shaped shift block, a locking pin fixedly connected to the T-shaped shift block, a pin tube accommodating the locking pin, an elastic tube arranged above the pin tube, and a wire seat accommodated inside the locking pin, the wire seat is provided with a wire hole, the third control wire is connected to the wire hole, a clamping block is provided in an annular direction on the outer periphery of the locking pin, and a clamping groove adapted to the clamping block is provided on the tube wall of the pin tube.

9. The adjustable bend conveying device according to claim 8, characterized in that: The housing is provided with an L-shaped groove, and the L-shaped groove is used to accommodate the T-shaped shift block to move thereon. The L-shaped groove includes a rotating section and a sliding section, and the rotating section is a sinking groove.

10. The adjustable bend conveying device according to claim 5, characterized in that: The outer wall of the connecting tube is provided with guide columns protruding to both sides, the inner wall of the threaded slider is provided with guide grooves adapted to the positions of the guide columns, the bottom end of the guide column is connected to a positioning seat, the inner wall of the handle shell is provided with two positioning rings, and the positioning seat is arranged between the two positioning rings.

11. The adjustable bend conveying device according to claim 10, characterized in that: A positioning cover is accommodated in the lower part of the handle shell, and a limiting flange is provided on the inner wall of the positioning cover, and the limiting flange limits the longitudinal movement of the indicating slider.

12. The adjustable bend conveying device according to claim 11, characterized in that: The outer wall of the positioning cover is provided with a mounting protrusion, and the outer wall of the lower part of the handle shell is provided with a mounting groove, and the mounting protrusion is accommodated in the mounting groove.

13. The adjustable bend conveying device according to claim 12, characterized in that: The outer wall of the rotating shell is provided with anti-skid patterns for increasing friction.

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