Needle-free connector integrated device for intracavity electrocardio positioning

Abstract

The utility model discloses a needleless joint integrated device for intracavity electrocardio positioning, the intracavity electrocardio positioning comprises an injector for intravenous injection, a central venous catheter matched with the injector for use, and medical detection equipment, and the needleless joint integrated device comprises a positive pressure joint arranged at a liquid outlet of the injector, and a negative pressure joint arranged at a liquid outlet of the injector. The positive pressure connector is provided with an injector connector, a circulation section, a central venous catheter connector and a coil box body arranged on the outer side of the circulation section in the flowing direction of intravenous fluid, and a rotary roller perpendicular to the circumferential face of the circulation section and an electrode wire wound on the rotary roller are arranged in the coil box body. The fixed end of the electrode wire penetrates through the side wall of the circulation section to make contact with intravenous fluid, the coil box body is provided with a wire outlet used for drawing out the electrode wire, and the drawing-out end of the electrode wire is used for being connected with external medical detection equipment. The device disclosed by the utility model can realize multi-scene intracavity electrocardiogram positioning, and can reduce bacterial infection.

Description

Technical Field

[0001] The utility model belongs to the field of medical devices, and particularly relates to a needleless connector integrated device for intracavitary electrocardiogram positioning. Background Art

[0002] Peripherally inserted central catheter (PICC) is a central venous catheter inserted through peripheral veins and is widely used clinically. Currently, the main methods for positioning the catheter tip are chest X-ray, echocardiogram, and CT examination after catheterization. When problems such as the catheter being too shallow, kinked, or misinserted into small blood vessels are found, due to factors such as the principle of asepsis, the adjustment methods are restricted. After adjustment, repeated radiography is required, which not only consumes time and cost but also does not achieve good results. In addition to positioning the catheter tip during catheterization, catheter-related complications may also occur during catheter indwelling. Secondary ectopia refers to the migration of the catheter tip to a position outside the vena cava during indwelling. With the development of intracavitary electrocardiogram technology, clinical experts can position the catheter tip at the optimal position during catheterization. To transmit physiological electrical signals to the electrocardiograph, when it is necessary to position the catheter tip when leaving the catheterization room, the existing method is to insert a syringe barrel into the heparin cap, clamp one end of a conductive alligator clip to the metal part of the syringe barrel, connect the other end to the electrocardiogram monitor, and then inject normal saline through a venous syringe to complete conduction, thereby obtaining an electrocardiogram waveform. When operating at the bedside in the ward, since the ward is a contaminated area with a large number of pathogenic microorganisms, a large aseptic barrier needs to be established and strict aseptic operations are required. Moreover, not all hospitals are equipped with alligator clips, which limits the intracavitary electrocardiogram positioning operation at the bedside. The use of multiple components often results in poor signal contact. In clinical applications, needleless positive pressure connectors are widely used in various injection, infusion, and nursing operations in hospitals at all levels. The positive pressure connector not only has a positive pressure function, which can effectively prevent air from entering the infusion pipeline, reduce bacterial infection, and improve the level of aseptic operation, but is also widely used clinically.

[0003] Patent document CN212879324U discloses an intracavitary electrocardiogram positioning device, which includes an electrocardiogram monitor, a Seldinger guide wire, and a PICC catheter assembly. The PICC catheter assembly includes a catheter and an Earl connector. The end of the catheter is provided with a connecting sleeve by itself, and the Earl connector is hermetically connected to the connecting sleeve. The tip of the catheter is provided with a three-way valve. One end of the Seldinger guide wire is inserted into the catheter through the Earl connector, and the other end of the Seldinger guide wire is connected to the electrocardiogram monitor through a self-adhesive electrode patch. This device detects the electrocardiogram of the human body by setting a wire tube for connecting each wire tube. However, this device requires too many wire tubes and is only used for positioning during catheter insertion. It is not very convenient to store in actual medical scenarios, and the application scenario is single. Summary of the Invention

[0004] The purpose of the present utility model is to provide a needleless connector integrated device for intracavitary electrocardiogram positioning, which can realize intracavitary electrocardiogram positioning in multiple scenarios and reduce bacterial infection.

[0005] In order to achieve the purpose of the present utility model, the following technical solutions are provided: A needleless connector integrated device for intracavitary electrocardiogram positioning, the intracavitary electrocardiogram positioning includes a syringe for intravenous injection and a matching central venous catheter, as well as a medical detection device. The needleless connector integrated device includes a positive pressure connector arranged at the liquid outlet of the syringe. The positive pressure connector is provided with a syringe connector, a flow-through section, and a central venous catheter connector along the flowing direction of the intravenous injection liquid. And a coil box body is arranged outside the flow-through section. Inside the coil box body, there is a rotary roller perpendicular to the circumferential surface of the flow-through section, and an electrode wire wound around the rotary roller. The fixed end of the electrode wire passes through the side wall of the flow-through section to contact the intravenous injection liquid. The coil box body is provided with an outlet for extracting the electrode wire, and the outlet is provided with a sealing cover. The extraction end of the electrode wire is used to connect an external medical detection device.

[0006] The present utility model expands the venous catheter from a single injection tube to a biological information expansion port through the positive pressure connector with an integrated multi-connector, so as to facilitate the access and use of medical devices.

[0007] Specifically, a limiting silica gel is arranged on the outer circumferential surface of the syringe, and a limiting groove matching and fixing with the limiting silica gel is arranged on the inner wall of the syringe connector.

[0008] Specifically, the limiting silica gel is of a barbed type, and the included angle between the limiting silica gel and the liquid outlet along the flowing direction of the injection liquid is 120-150° to facilitate the connection and fixation of the syringe and the positive pressure connector.

[0009] Specifically, the central venous catheter connector is sleeved outside the central venous catheter in a threaded connection manner to facilitate the fixed connection of the positive pressure connector and the central venous catheter.

[0010] Specifically, the rotary roller is provided with a reset spring piece and a limiting pin for restricting the rotation of the rotary roller to control the length use of the electrode wire in the coil box body.

[0011] Specifically, the extraction end of the electrode wire adopts a round connector to improve the adaptability of the electrode wire to medical devices.

[0012] Compared with the prior art, the beneficial effects of the present utility model:

[0013] Utilize the conductive characteristics of the liquid and integrate it with the positive pressure connector design, which not only improves the connection tightness, makes the operation more stable, simplifies the structure of the integrated device, is convenient to operate in any scenario, improves the efficiency of intravenous catheterization operators, and maximizes the product function; further realizes intracavitary electrocardiogram positioning in multiple scenarios and reduces bacterial infection. Brief Description of the Drawings

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the needleless connector integrated device provided by this embodiment;

[0015] Figure 2 It is the front view of the needleless connector integrated device provided by this embodiment;

[0016] Figure 3 It is the side view of the needleless connector integrated device provided by this embodiment;

[0017] In the figure, 1 is the positive pressure connector, 2 is the coil box body; 3 is the electrode wire; 1-1 is the syringe connector; 1-2 is the flow-through section; 1-3 is the central venous catheter connector; 2-1 is the wire outlet. Detailed Description of the Specific Embodiment

[0018] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the following further details the present utility model in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0019] A needleless connector integrated device for intracavitary electrocardiogram positioning provided by this example, intracavitary electrocardiogram positioning includes a syringe for intravenous injection and a supporting central venous catheter, as well as medical detection equipment, and the needleless connector integrated device includes a positive pressure connector 1 and a coil box body 2. As Figure 1 shown, the positive pressure connector 1 is used to connect the syringe and the central venous catheter. The positive pressure connector 1 is provided with a coil box body 2, and the coil box body stores a stretchable and expandable electrode wire 3. When central venous head end positioning is required, inject normal saline to connect the syringe.

[0020] As Figure 2 and Figure 3As shown in the figure, the positive pressure connector 1 is provided with a syringe connector 1-1, a flow-through section 1-2, and a central venous catheter connector 1-3 along the flow direction of the intravenous injection solution. The flow-through section 1-2 is provided with an externally connected coil box 2. The coil box 2 is fixedly connected to the positive pressure connector 1 on the left. It is a rotary roller for winding the electrode wire 3 when not positioned, and it contains a spring piece. When not in use, the rotary roller can make the wire reel return to its original position. When positioning is required, as the electrode wire 3 is pulled out, the rotary roller rotates, and the electrode wire 3 in the coil box 2 is gradually extracted. At the same time, the length of the electrode wire 3 in the coil box 2 is controlled by a limit pin, so as to avoid the problem of messy wire tubes in the medical scenario and low daily care efficiency.

[0021] The outer peripheral surface of the syringe is provided with a limit silicone, and the inner wall of the syringe connector is provided with a limit groove that is fixedly matched with the limit silicone. The limit silicone is of a barbed type, and the included angle between the limit silicone and the liquid outlet along the flow direction of the injection solution is 150°, which is convenient for the connection and fixation of the syringe and the positive pressure connector.

[0022] In addition, the central venous catheter connector 1-3 is sleeved outside the central venous catheter in a threaded connection manner, which is convenient for the fixed connection of the positive pressure connector and the central venous catheter.

[0023] The electrode wire 3 contacts the intravenous injection solution in the flow-through section 1-2 from the central channel of the rotary roller, and the remaining part is wound around the rotary roller; after winding several circles, it comes out from the wire outlet 2-1 of the coil box 2.

[0024] The electrode wire 3 extends into and is fixed to the inner wall of the positive pressure connector to conduct electricity. When the medical syringe is used to inject intravenous injection solution, it realizes the function of being energized with the device in the vascular access. The end of the electrode wire 3 is designed as a round connector, and the design of the round connector can be closely connected to the distal end of the commonly used electrocardiogram connecting wire on the market, solving the problem of loose connection, with stable connection and high adaptability. This device cleverly utilizes the characteristic of liquid conduction and integrates it with the design of the positive pressure connector, which not only improves the connection tightness, makes the operation more stable, simplifies the structure of the integrated device, is convenient to operate in any scenario, can deal with complications such as secondary ectopia after the indwelling central vascular access leaves the catheterization room, so as to realize intracavitary electrocardiogram positioning in multiple scenarios, thereby improving the efficiency of intravenous catheterization operators and maximizing the product function.

[0025] In addition, the terms "upper", "lower", "inner", "outer", "front", and "rear" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Unless specifically stated otherwise, the relative steps, numerical expressions, and numerical values of the components and steps described in these embodiments do not limit the scope of the present invention.

[0026] Certainly, the above are only specific embodiments of the present utility model and do not limit the scope of implementation of the present utility model. Any equivalent changes or modifications made according to the structure, features and principles described in the scope of the patent application of the present utility model shall be included in the scope of the patent application of the present utility model.

[0027] Finally, it should be noted that the above embodiments are only specific implementation manners of the present utility model, used to illustrate the technical solutions of the present utility model, rather than limiting it. The protection scope of the present utility model is not limited thereto. Although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that any person skilled in the art within the technical scope disclosed by the present utility model can still modify the technical solutions recorded in the foregoing embodiments or can easily think of changes, or perform equivalent replacements on some of the technical features; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model and should all be covered by the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A needleless connector integrated device for intracavitary electrocardiogram positioning, wherein the intracavitary electrocardiogram positioning includes a syringe for intravenous injection, a central venous catheter used in conjunction therewith, and a medical detection device, and is characterized in that, The needleless connector integrated device includes a positive pressure connector disposed at the liquid outlet of the syringe. The positive pressure connector is provided with a syringe connector, a flow-through section, and a central venous catheter connector along the flow direction of the intravenous injection liquid, and a coil box body disposed outside the flow-through section. A rotary roller perpendicular to the circumferential surface of the flow-through section and an electrode wire wound around the rotary roller are provided in the coil box body. The fixed end of the electrode wire passes through the side wall of the flow-through section to contact the intravenous injection liquid. The coil box body is provided with an outlet for extracting the electrode wire, and the outlet is provided with a sealing cover. The extraction end of the electrode wire is used to connect an external medical detection device.

2. The needleless connector integrated device for intracavitary electrocardiogram positioning according to claim 1, wherein A limiting silica gel is provided on the outer circumferential surface of the liquid outlet of the syringe, and a limiting groove for mating and fixing with the limiting silica gel is provided on the inner wall of the syringe connector.

3. The needleless connector integrated device for intracavitary electrocardiogram positioning according to claim 2, wherein The limiting silica gel is of a barbed type, and the included angle between the limiting silica gel and the liquid outlet along the flow direction of the injection liquid is 120-150°.

4. The needleless connector integrated device for intracavitary electrocardiogram positioning according to claim 1, characterized in that, The central venous catheter connector is sleeved outside the central venous catheter in a threaded connection manner.

5. The needleless connector integrated device for intracavitary electrocardiogram positioning according to claim 1, characterized in that, The rotary roller is provided with a return spring piece and a limiting pin for restricting the rotation of the rotary roller.

6. The needleless connector integrated device for intracavitary electrocardiogram positioning according to claim 1, wherein, The extraction end of the electrode wire uses a round connector.

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