Automatic conduit threading system

Abstract

The invention discloses an automatic threading system for a catheter, and relates to the field of medical instruments, the automatic threading system for the catheter is used for pulling a cable and comprises a pulling pushing device and an automatic cutting device, the catheter is arranged between the pulling pushing device and the automatic cutting device, and the catheter comprises a catheter body and a catheter body threading cavity formed in the catheter body; one side of the pipe body threading cavity is provided with a traction inlet, the other side of the pipe body threading cavity is provided with a traction outlet, a traction needle and a guide needle are arranged in the pipe body threading cavity, the traction needle is provided with a traction needle hook, and when the traction needle reaches a preset position, the traction needle hook hooks a cable and pulls the cable back to the traction outlet. The threading efficiency is effectively improved, and the operation requirement of an operator is lowered.

Description

Technical Field

[0001] The invention relates to the field of medical devices, and in particular to an automatic catheter threading system. Background Art

[0002] At present, the outer diameter of general medical device silicone catheters is relatively small. If one or more cables need to be inserted into the inside, the threading is difficult due to the small inner diameter of the threading cavity. The traditional method is manual operation, that is, workers manually point the required threading holes at different positions on the tube wall, and then pass the cables to be threaded through the threading holes in the tube body and then out of the tube body cavity. This not only has low work efficiency and high labor intensity, but also requires very high vision and skills of the operator. Summary of the invention

[0003] In view of the above-mentioned deficiencies of the current threading devices, the present invention provides an automatic catheter threading system to improve threading efficiency and reduce operator operation requirements.

[0004] To achieve the above object, the embodiments of the present invention adopt the following technical solutions: A catheter automatic threading system is used for pulling cables, comprising a traction pushing device and an automatic cutting device, a catheter is arranged between the traction needle pushing device and the automatic cutting device, the catheter comprises a tube body and a tube body threading cavity arranged in the tube body, a traction inlet is arranged on one side of the tube body threading cavity, a traction outlet is arranged on the other side of the tube body threading cavity, a traction needle and a guide needle are arranged in the tube body threading cavity, a traction needle hook is arranged on the traction needle, and when the cable reaches a preset position, the traction needle hook hooks the cable and pulls the cable back to the traction outlet.

[0005] According to one aspect of the present invention, a traction needle tip is provided on the traction needle, and a traction outlet is formed by piercing the tube wall of the tube body through the traction needle tip.

[0006] According to one aspect of the present invention, the guide needle head is provided with a sloped wedge angle.

[0007] According to one aspect of the present invention, the automatic cutting device is provided with a tube placement groove and a tube positioning surface for placing the tube.

[0008] According to one aspect of the present invention, the tube body is disposed in a tube body placement groove.

[0009] According to one aspect of the present invention, the rear end of the tube body is in close contact with the positioning surface of the tube body.

[0010] According to one aspect of the present invention, the catheter is a silicone catheter.

[0011] According to one aspect of the present invention, the introducer needle is sleeved on the traction needle.

[0012] According to one aspect of the present invention, the traction needle and the guide needle are coaxially arranged, and the traction needle can move inside the guide needle.

[0013] The advantages of the present invention are as follows: the guide needle head has a slope wedge angle, which is convenient for insertion into the traction entrance; the movement of the cable is controlled by the traction needle hook; the traction needle and the guide needle are coaxially arranged, which facilitates the cooperation between the two. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 is a schematic diagram of the traction needle and the guide needle of the present invention reaching the starting position; Figure 2 is a top view of the present invention; Figure 3 is a schematic diagram of the traction needle of the present invention passing through the tube body; Figure 4 The present invention Figure 3 A partial enlarged view of the middle A; Figure 5 It is a schematic diagram of the traction needle of the present invention returning to the original position.

[0016] 10. Cable; 20. Tube body; 21. Traction inlet; 22. Traction outlet; 23. Tube body threading cavity; 30. Tube body placement groove; 31. Tube body positioning surface; 40. Traction needle; 41. Guide needle; 42. Traction needle hook; 43. Traction needle tip; 50. Automatic cutting device; 60. Traction pushing device. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Embodiment 1

[0019] like Figures 1 to 5 As shown, A catheter automatic threading system is an automatic threading system that can insert an electric wire with a diameter of 0.5 mm from a specified position on the tube wall in a tube body cavity with a diameter of less than 3.0 mm, and pass it out from the specified position on the tube wall through the tube body cavity; the catheter automatic threading system is used to pull a cable 10, including a traction pushing device 60 and an automatic cutting device 50, a catheter is arranged between the traction pushing device 60 and the automatic cutting device 50, the catheter includes a tube body 20 and a tube body threading cavity 23 arranged in the tube body 20, a traction inlet 21 is arranged on one side of the tube body threading cavity 23, a traction outlet 22 is arranged on the other side of the tube body threading cavity 23, a traction needle 40 and a guide needle 41 are arranged in the tube body threading cavity 23, a traction needle hook 42 is arranged on the traction needle 40, and when the traction needle 40 reaches the preset position, the traction needle hook 42 hooks the cable 10 and pulls the cable 10 back to the traction outlet 22.

[0020] The traction pushing device 60 can fix the guide needle 41 and the traction needle 40. When the power switch is turned on, the traction needle 40 and the guide needle 41 reach the starting position. The traction inlet 21 on the tube body can be inserted into the guide needle 41 and the traction needle 40 can move forward. When the traction needle 40 hooks the cable 10, the traction needle 40 can pull back the cable 10 until the guide needle 41 and the traction needle 40 return to the initial position.

[0021] During use, after the power switch is turned on and the traction needle 40 and the guide needle 41 reach the starting position at the same time, the traction entrance 21 pre-opened on the catheter tube body 20 and communicating with the tube body threading cavity 23 is manually inserted into the guide needle 41, and the traction needle 40 is extended from the guide needle 41 into the tube body threading cavity 23 under program control, and the guide needle 41 retreats to its original position; when the traction needle 40 reaches the traction outlet 22 position, due to the fast movement speed of the traction needle 40, the traction needle tip 43 pierces the tube wall of the tube body 20 to form a traction outlet 22, and the traction needle 40 extends from the traction outlet 22 into the cable 10 position of the cutting device. When the traction needle hook 42 of the traction needle 40 touches the cable 10, the cable 10 automatically slides into the specified position of the traction needle hook 42, and the traction needle 40 is immediately pulled back under the control of the program. The cable 10 in the traction needle hook 42 and the traction needle 40 are pulled back together into the tube threading cavity 23 until the cable 10 moves toward the traction entrance 21. When the traction needle 40 is pulled back out of the traction entrance 21, the program controls the automatic cutting device 50 to cut off the cable 10, and the traction needle 40 returns to the initial position.

[0022] The cable 10 may be an electric wire, a conductor or the like.

[0023] In practical applications, a traction needle tip 43 is provided on the traction needle 40 , and the traction outlet 22 is formed by piercing the wall of the tube body 20 through the traction needle tip 43 .

[0024] In practical application, the head of the guide needle 41 is provided with a slope wedge angle, which is convenient for inserting into the traction entrance 21.

[0025] In actual application, the automatic cutting device 50 is provided with a tube placement groove 30 and a tube positioning surface 31 for placing the tube 20. The tube 20 is placed in the tube placement groove 30 along the length direction, and the tail end of the tube 20 hangs down and closely adheres to the tube positioning surface 31 to ensure that the tube 20 does not shift during operation.

[0026] In practical applications, the tube body 20 is disposed in the tube body placement groove 30. The tube body 20 is fixed by the tube body placement groove 30.

[0027] In practical applications, the rear end of the tube body 20 is in close contact with the tube body positioning surface 31, ensuring that the tube body 20 does not shift during operation.

[0028] In practical applications, the catheter is a silicone catheter.

[0029] In practical applications, the guide needle 41 is sleeved on the traction needle 40 .

[0030] In practical applications, the traction needle 40 and the guide needle 41 are coaxially arranged, and the traction needle 40 can move inside the guide needle 41. The traction needle 40 and the guide needle 41 are coaxially arranged to facilitate the cooperation between the two.

[0031] The beneficial effects of the present invention are as follows: the head of the guide needle 41 has a slope wedge angle, which is convenient for insertion into the traction entrance 21; the movement of the cable 10 is controlled by the traction needle hook 42; and the traction needle 40 and the guide needle 41 are coaxially arranged to facilitate synchronous movement of the two.

[0032] Embodiment 2

[0033] like Figure 1 to Figure 2 As shown, A catheter automatic threading system is used for pulling a cable 10, comprising a pulling push device 60 and an automatic cutting device 50, wherein a catheter is arranged between the pulling push device 60 and the automatic cutting device 50, wherein the catheter comprises a tube body 20 and a tube body threading cavity 23 arranged in the tube body 20, wherein a pulling inlet 21 is arranged on one side of the tube body threading cavity 23, and a pulling outlet 22 is arranged on the other side of the tube body threading cavity 23, wherein a pulling needle 40 and a guide needle 41 are arranged in the tube body threading cavity 23, wherein a pulling needle hook 42 is arranged on the pulling needle 40, and a pulling needle tip 43 is arranged on the pulling needle 40, wherein the pulling outlet 22 is formed by piercing the tube wall of the tube body 20 by the pulling needle tip 43. By piercing the tube wall of the tube body 20 by the pulling needle tip 43 to form the pulling outlet 22, an outlet for pulling can be formed on the tube wall quickly and accurately, thereby avoiding the step of punching or cutting the tube wall in advance in the traditional method, and making the pulling more flexible, so as to be convenient for application in complex or irregular threading layouts.

[0034] The traction pushing device 60 can fix the guide needle 41 and the traction needle 40. When the power switch is turned on, the traction needle 40 and the guide needle 41 reach the starting position. The traction inlet 21 on the tube body can be inserted into the guide needle 41 and the traction needle 40 can move forward. When the traction needle 40 hooks the cable 10, the traction needle 40 can pull back the cable 10 until the guide needle 41 and the traction needle 40 return to the initial position.

[0035] During use, after the power switch is turned on and the traction needle 40 and the guide needle 41 reach the starting position at the same time, the traction entrance 21 pre-opened on the catheter tube body 20 and communicating with the tube body threading cavity 23 is manually inserted into the guide needle 41, and the traction needle 40 is extended from the guide needle 41 into the tube body threading cavity 23 under program control, and the guide needle 41 retreats to its original position; when the traction needle 40 reaches the traction outlet 22 position, due to the fast movement speed of the traction needle 40, the traction needle tip 43 pierces the tube wall of the tube body 20 to form a traction outlet 22, and the traction needle 40 extends from the traction outlet 22 into the cable 10 position of the cutting device. When the traction needle hook 42 of the traction needle 40 touches the cable 10, the cable 10 automatically slides into the specified position of the traction needle hook 42, and the traction needle 40 is immediately pulled back under the control of the program. The cable 10 in the traction needle hook 42 and the traction needle 40 are pulled back together into the tube threading cavity 23 until the cable 10 moves toward the traction entrance 21. When the traction needle 40 is pulled back out of the traction entrance 21, the program controls the automatic cutting device 50 to cut off the cable 10, and the traction needle 40 returns to the initial position.

[0036] The cable 10 may be an electric wire, a conductor or the like.

[0037] In practical application, the head of the guide needle 41 is provided with a slope wedge angle, which is convenient for inserting into the traction entrance 21.

[0038] In actual application, the automatic cutting device 50 is provided with a tube placement groove 30 and a tube positioning surface 31 for placing the tube 20. The tube 20 is placed in the tube placement groove 30 along the length direction, and the tail end of the tube 20 hangs down and closely adheres to the tube positioning surface 31 to ensure that the tube 20 does not shift during operation.

[0039] In practical applications, the tube body 20 is disposed in the tube body placement groove 30. The tube body 20 is fixed by the tube body placement groove 30.

[0040] In practical applications, the rear end of the tube body 20 is in close contact with the tube body positioning surface 31, ensuring that the tube body 20 does not shift during operation.

[0041] In practical applications, the catheter is a silicone catheter.

[0042] In practical applications, the guide needle 41 is sleeved on the traction needle 40 .

[0043] In actual applications, the traction needle 40 and the guide needle 41 are coaxially arranged, and the traction needle 40 can move inside the guide needle 41 .

[0044] The beneficial effects of the present invention are as follows: the head of the guide needle 41 has a slope wedge angle, which is convenient for insertion into the traction entrance 21; the movement of the cable 10 is controlled by the traction needle hook 42; and the traction needle 40 and the guide needle 41 are coaxially arranged to facilitate synchronous movement of the two.

[0045] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the art within the technical scope disclosed in the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. An automatic catheter threading system for pulling a cable (10), comprising a pulling and pushing device (60) and an automatic cutting device (50), characterized in that: A catheter is provided between the traction and pushing device (60) and the automatic cutting device (50), the catheter comprising a tube body (20) and a tube body threading cavity (23) arranged in the tube body (20), a traction inlet (21) being provided on one side of the tube body threading cavity (23), a traction outlet (22) being provided on the other side of the tube body threading cavity (23), a traction needle (40) and a guide needle (41) being provided in the tube body threading cavity (23), a traction needle hook (42) being provided on the traction needle (40), and when the traction needle (40) reaches a preset position, the traction needle hook (42) hooks the cable (10) and pulls the cable (10) back to the traction outlet (22).

2. The automatic catheter threading system according to claim 1, characterized in that: The traction needle (40) is provided with a traction needle tip (43), and the traction needle tip (43) pierces the wall of the tube body (20) to form a traction outlet (22).

3. The automatic catheter threading system according to claim 1, characterized in that: The head of the guide needle (41) is provided with a slope wedge angle.

4. The automatic catheter threading system according to claim 1, characterized in that: The automatic cutting device (50) is provided with a tube body placement groove (30) for placing the tube body (20) and a tube body positioning surface (31).

5. The automatic catheter threading system according to claim 4, characterized in that: The tube body (20) is arranged in the tube body placement groove (30).

6. The automatic catheter threading system according to claim 4, characterized in that: The rear end of the tube body (20) is in close contact with the tube body positioning surface (31).

7. The automatic catheter threading system according to claim 1, characterized in that: The catheter is a silicone catheter.

8. The automatic catheter threading system according to any one of claims 1 to 7, characterized in that: The guide needle (41) is sleeved on the traction needle (40).

9. The automatic catheter threading system according to claim 8, characterized in that: The traction needle (40) and the guide needle (41) are coaxially arranged, and the traction needle (40) can move inside the guide needle (41).

Images