Indwelling needle catheter component

Abstract

The present invention provides an indwelling needle catheter component, which relates to the technical field of indwelling needles, including a catheter body, one end of the catheter body is provided with a catheter seat, one end of the catheter seat is provided with a connecting tube, one end of the connecting tube is provided with a needle withdrawal tube, one end of the needle withdrawal tube is provided with a rotating tube, the outer wall of the rotating tube is provided with an anti-slip pad, one end of the rotating tube is provided with a knob, the other end of the catheter body is provided with a needle, the interior of the catheter seat is provided with a rivet, one end of the needle is provided with a needle tube body, the top and bottom of the needle tube body are provided with sliding blocks, and one end of the knob is provided with a threaded sleeve. The production process is relatively complicated, inefficient and costly. If the above process is assembled manually, it is bound to cause low efficiency and affect product output. If it is assembled automatically, the company needs to purchase equipment from outside, resulting in an increase in product prices and affecting product market competitiveness.

Description

Technical Field

[0001] The invention relates to the field of indwelling needles, and in particular to an indwelling needle catheter component. Background Art

[0002] The core components of the indwelling needle include a soft catheter that can be left in the blood vessel, and a stainless steel puncture guide needle core. When in use, the catheter and the needle core are punctured into the blood vessel together. When the catheter is completely in the blood vessel, the needle core is withdrawn, and only the soft catheter is left in the blood vessel for infusion or hemodialysis treatment, which is convenient for clinical medication, emergency and critically ill patients, and reduces the workload of nurses and the pain of children. Therefore, intravenous indwelling needles are widely used in clinical practice. The catheter and the catheter seat of the indwelling needle need to be fixed and tightly matched, so that the catheter and the catheter seat can be prevented from detaching during puncture and prevent bleeding. The catheter seat is then connected to the connecting tube to establish a blood pathway. At present, the fixation and matching of the catheter seat and the catheter of the indwelling needle on the market uses rivets to connect the catheter and the catheter seat.

[0003] The production process is relatively complicated. In the production process of this structure, the catheter and the rivet must first be interference-fitted, which requires homemade tooling or automated equipment. Then the matched parts can be installed into the catheter seat. This fit is also an interference fit, which also requires homemade tooling or automated equipment, which is inefficient and expensive. If the above processes are assembled manually, it will inevitably lead to low efficiency and affect product output. If it is assembled automatically, the company needs to purchase equipment from outside, resulting in an increase in product prices and affecting product market competitiveness. Summary of the invention

[0004] (I) Technical problems to be solved

[0005] In view of the deficiencies of the prior art, the present invention provides an indwelling needle catheter component, which has the advantages of improving product processing efficiency and saving costs, and solves the problems of complex production process, low efficiency and high cost.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose of improving product processing efficiency and saving costs, the present invention provides the following technical solutions: an indwelling needle catheter component, comprising a catheter body, one end of the catheter body is provided with a catheter seat, one end of the catheter seat is provided with a connecting tube, one end of the connecting tube is provided with a needle withdrawal tube, one end of the needle withdrawal tube is provided with a rotating tube, the outer wall of the rotating tube is provided with an anti-slip pad, one end of the rotating tube is provided with a knob, and the other end of the catheter body is provided with a needle.

[0008] Preferably, a rivet is provided inside the catheter seat, a needle tube body is provided at one end of the needle, sliding blocks are provided at the top and bottom of the needle tube body, and a threaded sleeve is provided at one end of the knob.

[0009] Preferably, a slide groove is provided inside the catheter body, and the sliding block is adapted to the internal slide groove of the catheter body.

[0010] Preferably, the surface of the needle tube body is provided with an external thread, and the needle tube body is threadedly connected to the threaded sleeve via the surface external thread.

[0011] Preferably, one end of the connecting tube and one end of the needle withdrawal tube are detachably mounted, and one end of the needle withdrawal tube and one end of the rotating tube are fixedly connected.

[0012] Preferably, the material of the anti-slip pad is food-grade rubber, and one end of the knob is rotatably connected to one end of the rotary tube.

[0013] Preferably, the catheter body and the catheter seat are tightly matched, and the outer diameter of the catheter body and the inner diameter of the connecting tube are interference fit.

[0014] Preferably, the outer diameter of the connecting tube and the inner diameter of the catheter seat are fixedly mounted by bonding, the outer surface of the catheter body and the inner surface of the connecting tube have friction, and the catheter body cannot move axially relative to the catheter seat and the connecting tube.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the present invention provides an indwelling needle catheter component, which has the following beneficial effects:

[0017] In the present invention, the catheter body is tightly matched with the small end of the catheter seat, the catheter body is fixed through the connecting tube, the large end of the catheter body passes through the connecting tube, the connecting tube passes through the catheter seat, the connecting tube and the catheter seat are fixed by bonding, and the catheter body will not move axially in the connecting tube due to the material and surface roughness of the connecting tube, thereby improving product processing efficiency and saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The present invention provides a schematic diagram of the overall structure of an indwelling needle catheter component;

[0019] Figure 2 A schematic diagram of the internal structure of an indwelling needle catheter component is provided for the present invention;

[0020] Figure 3 The present invention provides a structural schematic diagram of a needle tube in an indwelling needle catheter component.

[0021] Legend:

[0022] 1. Catheter body; 2. Catheter seat; 3. Connecting tube; 4. Needle withdrawal tube; 5. Rotary tube; 6. Anti-slip pad; 7. Knob; 8. Needle; 9. Rivet; 10. Needle tube body; 11. Sliding block; 12. Threaded sleeve. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0024] Reference Figure 1-3 A catheter component for an indwelling needle comprises a catheter body 1, a catheter seat 2 is arranged at one end of the catheter body 1, a connecting tube 3 is arranged at one end of the catheter seat 2, a needle withdrawal tube 4 is arranged at one end of the connecting tube 3, a rotating tube 5 is arranged at one end of the needle withdrawal tube 4, an anti-slip pad 6 is arranged on the outer wall of the rotating tube 5, a knob 7 is arranged at one end of the rotating tube 5, and a needle 8 is arranged at the other end of the catheter body 1.

[0025] Furthermore, a rivet 9 is provided inside the catheter seat 2, a needle tube body 10 is provided at one end of the needle 8, sliding blocks 11 are provided at the top and bottom of the needle tube body 10, and a threaded sleeve 12 is provided at one end of the knob 7 to facilitate the needle removal operation.

[0026] Furthermore, a slide groove is provided inside the catheter body 1, and the sliding block 11 is adapted to the inner slide groove of the catheter body 1, so that the needle body 10 can slide inside the slide groove.

[0027] Furthermore, the surface of the needle tube body 10 is provided with an external thread, and the needle tube body 10 is threadedly connected to the threaded sleeve 12 through the surface external thread, so that the needle tube body 10 can be taken out more conveniently.

[0028] Furthermore, one end of the connecting tube 3 and one end of the needle withdrawal tube 4 are detachably mounted, and one end of the needle withdrawal tube 4 and one end of the rotating tube 5 are fixedly connected, so that the knob 7 can be rotated more conveniently.

[0029] Furthermore, the material of the anti-slip pad 6 is food-grade rubber, and one end of the knob 7 is rotatably connected to one end of the rotary tube 5, which can effectively prevent the device from slipping when the knob 7 is rotated.

[0030] Furthermore, the catheter body 1 and the catheter seat 2 are tightly matched, and the outer diameter of the catheter body 1 and the inner diameter of the connecting tube 3 are interference-fitted, so that the fit is better.

[0031] Furthermore, the outer diameter of the connecting tube 3 and the inner diameter of the catheter seat 2 are fixed by bonding, the outer surface of the catheter body 1 and the inner surface of the connecting tube 3 have friction, and the catheter body 1 cannot move axially relative to the catheter seat 2 and the connecting tube 3, so that better control can be performed.

[0032] The working principle and use process of the present invention are as follows: the small end of the catheter body 1 is tightly matched with the catheter seat 2, the catheter body 1 is fixed through the connecting tube 3, the large end of the catheter body 1 passes through the connecting tube 3, the connecting tube 3 passes through the catheter seat 2, and the connecting tube 3 and the catheter seat 2 are fixed by bonding. Due to the material and surface roughness of the connecting tube 3, the catheter body 1 will not move axially in the connecting tube 3, thereby improving product processing efficiency and saving costs.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An indwelling needle catheter component, comprising a catheter body (1), characterized in that: One end of the catheter body (1) is provided with a catheter seat (2), one end of the catheter seat (2) is provided with a connecting tube (3), one end of the connecting tube (3) is provided with a needle withdrawal tube (4), one end of the needle withdrawal tube (4) is provided with a rotating tube (5), the outer wall of the rotating tube (5) is provided with an anti-slip pad (6), one end of the rotating tube (5) is provided with a knob (7), and the other end of the catheter body (1) is provided with a needle (8); A rivet (9) is arranged inside the catheter seat (2), a needle tube body (10) is arranged at one end of the needle head (8), sliding blocks (11) are arranged at the top and bottom of the needle tube body (10), and a threaded sleeve (12) is arranged at one end of the knob (7); The catheter body (1) is provided with a slide groove inside, and the sliding block (11) is adapted to the internal slide groove of the catheter body (1); The outer diameter of the connecting tube (3) and the inner diameter of the catheter seat (2) are fixedly mounted by bonding, the outer surface of the catheter body (1) and the inner surface of the connecting tube (3) have friction, and the catheter body (1) cannot move axially relative to the catheter seat (2) and the connecting tube (3).

2. The indwelling needle catheter component according to claim 1, characterized in that: The surface of the needle tube body (10) is provided with an external thread, and the needle tube body (10) is threadedly connected to the threaded sleeve (12) via the surface external thread.

3. The indwelling needle catheter component according to claim 1, characterized in that: One end of the connecting tube (3) and one end of the needle withdrawal tube (4) are detachably mounted, and one end of the needle withdrawal tube (4) and one end of the rotating tube (5) are fixedly connected.

4. The indwelling needle catheter component according to claim 1, characterized in that: The material of the anti-slip pad (6) is food-grade rubber, and one end of the knob (7) is rotatably connected to one end of the rotary tube (5).

5. The indwelling needle catheter component according to claim 1, characterized in that: The catheter body (1) and the catheter seat (2) are tightly matched, and the outer diameter of the catheter body (1) and the inner diameter of the connecting tube (3) are interference matched.

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