Buckling connection seat for peripherally inserted central catheter

Abstract

The utility model relates to a peripheral central venous catheter, in particular to a buckling connection seat for the peripheral central venous catheter, which comprises a buckling seat, a buckling tube is slidably connected in the buckling seat, a clamping ball is movably connected in the buckling seat, the clamping ball is movably connected in the buckling tube, the outer wall of the buckling seat is slidably connected with a limiting sleeve, and the limiting sleeve is movably connected in the buckling tube. The outer wall of the buckling seat is sleeved with a first spring, one end of the first spring is fixedly connected to the interior of the limiting sleeve, and the other end of the first spring is fixedly connected to the interior of the buckling seat. According to the detachable venous catheter, the limiting sleeve slides downwards, so that the clamping ball slides outwards to be separated from the interior of the buckling pipe, at the moment, the buckling pipe can be detached, the in-vitro pipe and the in-vivo pipe can be detached from the interiors of the buckling pipe and the buckling seat respectively by rotating the in-vitro pipe and the in-vivo pipe, and the detachable venous catheter is achieved; therefore, in-vitro pipes and in-vivo pipes with different lengths can be spliced in an auxiliary manner.

Description

Technical Field

[0001] This utility model relates to a peripherally inserted central venous catheter, and more particularly to a fastening connector for a peripherally inserted central venous catheter. Background Technology

[0002] A peripherally inserted central venous catheter (PICC) is a catheter inserted through a peripheral blood vessel and extending to a central vein. It is used for long-term intravenous infusion, drug administration, hemodialysis, nutritional support, and other clinical treatments. This catheter is suitable for patients requiring long-term intravenous therapy, especially those for whom peripheral veins cannot be inserted.

[0003] Existing intravenous catheters are usually one-piece designs, but one-piece intravenous catheters are not suitable for all patients. For patients with smaller body size, the exposed end is too long, which can easily lead to the intravenous catheter being accidentally pulled, thus affecting the effectiveness of infusion or drug injection. Summary of the Invention

[0004] The purpose of this invention is to provide a snap-fit ​​connector for peripherally inserted central venous catheters, which enables the detachable venous catheter, facilitates the connection of catheters of different lengths, and is suitable for patients of different body types, thereby improving the practicality of venous catheters.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a buckling connector for a peripherally inserted central venous catheter is provided, including a buckling seat, a snap-fit ​​tube slidably connected inside the buckling seat, a snap-fit ​​ball movably connected inside the buckling seat, the snap-fit ​​ball movably connected inside the snap-fit ​​tube, a limiting sleeve slidably connected to the outer wall of the buckling seat, and a spring sleeved on the outer wall of the buckling seat, one end of the spring being fixedly connected inside the limiting sleeve, and the other end of the spring being fixedly connected inside the buckling seat.

[0006] Optionally, both the fastening seat and the snap-fit ​​tube have threaded grooves inside, the fastening seat is threaded to an inner tube, and the snap-fit ​​tube is threaded to an outer tube.

[0007] Optionally, a limiting plate is fixedly connected inside the snap-fit ​​tube, and a connecting tube is slidably connected inside the limiting plate. A spring is sleeved on the outer wall of the connecting tube.

[0008] Optionally, one end of the second spring is fixedly connected to the inside of the first limiting plate, and the other end of the second spring is fixedly connected to the inside of the first connecting pipe.

[0009] Optionally, a limiting plate two is fixedly connected inside the fastening seat, and a connecting pipe two is slidably connected inside the limiting plate two, with a spring three sleeved on the outer wall of the connecting pipe two.

[0010] Optionally, one end of the spring three is fixedly connected to the inside of the limiting plate two, and the other end of the spring three is fixedly connected to the inside of the connecting pipe two.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. When using this utility model, by sliding the limiting sleeve downward, the limiting sleeve no longer presses against the locking ball, and by the downward compression of the limiting sleeve, the locking ball slides outward and disengages from the inside of the locking tube. At this time, the locking tube can be disassembled. By rotating the external tube and the internal tube, the external tube and the internal tube can be disassembled from the inside of the locking tube and the fastening seat respectively, realizing the disassembly of the intravenous catheter, thereby assisting in splicing external tubes and internal tubes of different lengths.

[0013] 2. This utility model achieves drainage by fitting the lower end of the external tube with the upper end of the first connecting tube, and the upper end of the internal tube with the lower end of the second connecting tube, and by using a snap-fit ​​tube to snap inside the fastening seat so that the lower end of the first connecting tube is aligned with the upper end of the second connecting tube, thereby assisting in infusion or drug injection. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the limiting sleeve of this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the fastening base of this utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the butt joint pipe of this utility model.

[0019] In the diagram: 1. Buckle seat; 2. Buckle tube; 3. Ball clamp; 4. Limit sleeve; 5. Spring 1; 6. Inner tube; 7. Outer tube; 8. Limit plate 1; 9. Connecting tube 1; 10. Spring 2; 11. Limit plate 2; 12. Connecting tube 2; 13. Spring 3. Detailed Implementation

[0020] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0021] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0022] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] The following describes the buckling connector of this utility model. A buckling connector for a peripherally inserted central venous catheter includes a buckling seat 1, a snap-fit ​​tube 2 slidably connected inside the buckling seat 1, and a snap-fit ​​ball 3 movably connected inside the buckling seat 1. Multiple snap-fit ​​balls 3 are provided and movably connected inside the snap-fit ​​tube 2. A limiting sleeve 4 slidably connects to the outer wall of the buckling seat 1, limiting the snap-fit ​​ball 3 using the inner wall of the limiting sleeve 4. A spring 5 is fitted onto the outer wall of the buckling seat 1, with one end of the spring 5 fixedly connected inside the limiting sleeve 4 and the other end fixedly connected inside the buckling seat 1. The spring 5 limits the limiting sleeve 4. Both the buckling seat 1 and the snap-fit ​​tube 2 have threaded grooves inside. An internal tube 6 is threadedly connected inside the buckling seat 1, with the upper port diameter of the internal tube 6 being the same as the lower port diameter of the connecting tube 12. An external tube 7 is threadedly connected inside the snap-fit ​​tube 2, with the lower port diameter of the external tube 7 being the same as the upper port diameter of the connecting tube 9.

[0025] This invention provides a snap-fit ​​connector for peripherally inserted central venous catheters. Compared with the prior art, it enables the disassembly of the venous catheter, facilitating the connection of catheters of different lengths to suit patients of different body types.

[0026] Please refer to another embodiment of this utility model as well. Figure 3 and Figure 4 The buckle tube 2 is internally fixedly connected to a limiting plate 8. The limiting plate 8 is internally slidably connected to a connecting tube 9. A spring 10 is sleeved on the outer wall of the connecting tube 9. One end of the spring 10 is fixedly connected to the inside of the limiting plate 8, and the other end of the spring 10 is fixedly connected to the inside of the connecting tube 9. The spring 10 automatically resets the connecting tube 9. The buckle seat 1 is internally fixedly connected to a limiting plate 11. The limiting plate 11 is internally slidably connected to a connecting tube 12. A spring 13 is sleeved on the outer wall of the connecting tube 12. One end of the spring 13 is fixedly connected to the inside of the limiting plate 11, and the other end of the spring 13 is fixedly connected to the inside of the connecting tube 12. The spring 13 automatically resets the connecting tube 12.

[0027] Working principle: During use, select the appropriate internal tube 6 and external tube 7 according to the patient's body shape. Thread the internal tube 6 into the inside of the fastening seat 1, and thread the external tube 7 into the inside of the snap-fit ​​tube 2. Then, slide the limiting sleeve 4 downwards, causing the retaining ball 3 inside the fastening seat 1 to slide outwards. This allows the snap-fit ​​tube 2 to pull the external tube 7 into the fastening seat 1. As the limiting sleeve 4 slides downwards, it compresses the spring 5. At this point, the limiting sleeve 4 is released, and the elastic force of the spring 5 causes the limiting sleeve 4 to automatically reset, thus ensuring the fastening tube 7 is inserted into the fastening seat 1. The sleeve 4 slides upward and pushes the locking ball 3 into the inside of the fastening seat 1 through the inner wall of the limiting sleeve 4, causing part of the locking ball 3 to be locked into the inside of the fastening tube 2, thus limiting the fastening tube 2, which facilitates splicing and fastening, and makes it easier to replace the inner tube 6 and outer tube 7 of different lengths; after the fastening tube 2 is inserted into the inside of the fastening seat 1 and limited, the lower end of the outer tube 7 pushes the first connecting tube 9, and the upper end of the inner tube 6 abuts against the lower end of the second connecting tube 12, so that the lower end of the first connecting tube 9 and the upper end of the second connecting tube 12 can be aligned (e.g., Figures 2 to 4 As shown in the figure, the docking between docking tube 1 9 and docking tube 2 12 can assist in the use of the external tube 7 to administer intravenous infusion or drug injection to the patient through docking tube 1 9 and docking tube 2 12 and through the internal tube 6, thus playing a role in docking and drainage.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A hub for a peripherally inserted central catheter, comprising a hub (1), characterized in that: The buckle seat (1) is slidably connected to the inside of the buckle tube (2), and the buckle seat (1) is movably connected to the inside of the buckle tube (2). The buckle tube (2) is movably connected to the inside of the buckle seat (1). The outer wall of the buckle seat (1) is slidably connected to the limit sleeve (4). The outer wall of the buckle seat (1) is fitted with a spring (5). One end of the spring (5) is fixedly connected to the inside of the limit sleeve (4), and the other end of the spring (5) is fixedly connected to the inside of the buckle seat (1).

2. The hub for a peripherally inserted central venous catheter of claim 1, wherein: Both the fastening seat (1) and the snap-fit ​​tube (2) have threaded grooves inside. The fastening seat (1) is internally threaded to the inner tube (6), and the snap-fit ​​tube (2) is internally threaded to the outer tube (7).

3. The hub for a peripherally inserted central catheter of claim 1, wherein: The buckle tube (2) is fixedly connected to a limiting plate (8), and the limiting plate (8) is slidably connected to a connecting tube (9). The outer wall of the connecting tube (9) is fitted with a spring (10).

4. The hub for a peripherally inserted central catheter of claim 3, wherein: One end of the second spring (10) is fixedly connected to the inside of the first limiting plate (8), and the other end of the second spring (10) is fixedly connected to the inside of the first connecting pipe (9).

5. The hub for a peripherally inserted central venous catheter of claim 1, wherein: The fastening seat (1) is fixedly connected to a limiting plate two (11), and the limiting plate two (11) is slidably connected to a connecting pipe two (12). The outer wall of the connecting pipe two (12) is fitted with a spring three (13).

6. The hub for a peripherally inserted central venous catheter of claim 5, wherein: One end of the spring three (13) is fixedly connected to the inside of the limiting plate two (11), and the other end of the spring three (13) is fixedly connected to the inside of the connecting pipe two (12).

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