Novel medical infusion three-way valve extension tube

Abstract

The utility model discloses a novel medical infusion three-way valve extension tube, relates to the technical field of three-way valve extension tubes, and aims to solve the technical problem that infusion is inconvenient to stop quickly when the medical three-way valve extension tube encounters special conditions, the novel medical infusion three-way valve extension tube comprises a valve body, a valve core is arranged in the valve body, and a communication hole is formed in the valve core. A telescopic rod is movably connected to the middle of the valve element, a plug is fixedly connected to the lower end of the telescopic rod, and a plugging groove matched with the plug is formed in the communicating hole. After acute pulmonary edema symptoms are generated in the infusion process, the telescopic rod is directly pressed to drive the plug at the lower end of the telescopic rod to completely seal the plugging groove formed in the middle of the valve element; a connecting plate is manually rotated to press a connecting ring downwards, so that a sliding block on the inner side of the connecting ring moves to the bottom end of a sliding groove to limit the telescopic rod to bounce under the action of compressed force of a reset spring, and the situation that infusion is interrupted and not rapid enough due to the fact that the rotating angle of a handle on the outer side of a valve element is uncertain is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of three-way valve extension tubes, and more specifically to a novel medical infusion three-way valve extension tube. Background Art

[0002] The three-way valve extension tube is an auxiliary infusion device. It has one inlet and two outlets. It can connect two infusion bags or syringes at the same time to mix the two liquids together, thereby reducing the number of infusions. The three-way tube is easy to use and does not require changing liquid bags or syringes, saving medical staff time and energy.

[0003] When using the three-way valve extension tube, the connectivity between the three inlets and outlets is adjusted according to the needs of use. When symptoms of acute pulmonary edema such as chest tightness and coughing up pink foamy sputum are encountered during the infusion process, the infusion needs to be stopped immediately. Although the existing equipment can stop the infusion by rotating the knob to control the staggered position between the valve core and the inlet and the two outlets, it needs to be rotated to a certain angle to achieve this, which is not convenient for quickly and accurately closing the valve to achieve an emergency stop effect. In view of this, we propose a new medical infusion three-way valve extension tube. Utility Model Content

[0004] The utility model aims to overcome the deficiencies of the prior art, meet practical needs, and provide a novel medical infusion three-way valve extension tube to solve the technical problem that the current medical three-way valve extension tube is not convenient for quickly stopping the infusion when encountering special conditions.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a new type of medical infusion three-way valve extension tube, comprising a valve body, a valve core is arranged inside the valve body, a connecting hole is opened inside the valve core, a telescopic rod is movably connected to the middle part of the valve core, a plug is fixedly connected to the lower end of the telescopic rod, a sealing groove matching the plug is opened inside the connecting hole, a knob is fixedly connected to the top end of the telescopic rod, the upper end of the outer surface of the telescopic rod is movably connected to a connecting plate through a connecting ring, the upper surface of the valve core is fixedly connected to a threaded interface, and the upper surface of the telescopic rod is fixedly connected to a reset spring.

[0006] The utility model discloses that after the symptom of acute pulmonary edema occurs during the infusion process, the plugging head at the lower end of the telescopic rod is driven by directly pressing the telescopic rod to completely close the plugging groove opened in the middle of the valve core. After the infusion process is initially interrupted, the connecting plate is manually rotated to make it rotate on the outer surface of the connecting ring. Then, the connecting ring is pressed down in the threaded connection between the connecting plate and the threaded interface so that the sliding block on the inner side of the connecting ring moves to the bottom end of the sliding groove to limit the telescopic rod from bouncing up under the action of the compressed force of the reset spring, thereby avoiding the infusion interruption that is not rapid enough due to the uncertain rotation angle of the handle on the outer side of the valve core.

[0007] Preferably, a limit block is fixedly connected to the middle of the outer surface of the telescopic rod, a limit groove matching the limit block is opened on the inner wall of the valve core, and a fan-shaped connecting groove with an arc of forty-five degrees is opened in the middle of the outer surface of the plug.

[0008] Preferably, the curvature of the limiting groove is the same as that of the connecting groove, and both ends of the limiting groove are provided with embedding grooves matching the limiting block.

[0009] Preferably, the plug is composed of a cylinder and a hemisphere below it, and the length of the cylinder inside the plug is greater than the diameter of the connecting hole.

[0010] Preferably, the upper end of the return spring is located inside the connecting plate and fits with the top of the inner wall of the connecting plate. The inner wall of the connecting plate is provided with thread grooves matching the threaded interface around it.

[0011] Preferably, a sliding block is provided on the inner wall of the connecting ring, and a sliding groove matching the sliding block is provided on the outer wall of the telescopic rod.

[0012] Preferably, the distance from the lower surface of the connecting plate to the upper surface of the threaded interface is equal to the distance from the blocking groove to the bottom end of the inner wall of the connecting hole, and the length of the sliding groove on the outer wall of the telescopic rod is less than the vertical height of the threaded groove on the inner wall of the connecting plate.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. After the symptoms of acute pulmonary edema occur during the infusion process, the utility model directly presses the telescopic rod to drive the plug at the lower end thereof to completely close the blocking groove opened in the middle of the valve core. After the infusion process is initially interrupted, the connecting plate is manually rotated to press the connecting ring downward so that the slider on the inner side of the connecting ring moves to the bottom end of the slide groove to limit the telescopic rod from bouncing up under the action of the compressed force of the reset spring, thereby avoiding the infusion interruption caused by the uncertain rotation angle of the handle on the outer side of the valve core.

[0015] 2. The utility model also designs a 45-degree arc fan-shaped connecting groove structure. After the three-way valve extension tube quickly stops infusion, the telescopic rod can be temporarily rotated to control the connecting groove to connect the injection end of the patient's arm and the adjacent connecting port, which is convenient for sucking out the remaining liquid from the injection end through the needle tube and performing rapid intravenous special drug injection operations on patients with adverse reactions. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the side sectional structure of the valve core of the utility model;

[0018] Figure 3 This is a schematic diagram of the connecting groove structure of the utility model;

[0019] Figure 4 For the utility model Figure 2 Enlarged structural diagram at A in the middle.

[0020] Description of the numbers in the figure:

[0021] 1. Valve body; 2. Valve core; 201. Communication hole; 3. Telescopic rod; 301. Knob; 302. Communication groove; 4. Limit block;

[0022] 401, limit groove; 5, plug; 501, plugging groove; 6, connecting plate; 601, connecting ring; 7, return spring; 8, threaded interface. DETAILED DESCRIPTION

[0023] like Figures 1 to 4 As shown, the utility model relates to a novel medical infusion three-way valve extension tube, comprising a valve body 1, a valve core 2 is arranged inside the valve body 1, a connecting hole 201 is opened inside the valve core 2, a telescopic rod 3 is movably connected to the middle part of the valve core 2, a plug 5 is fixedly connected to the lower end of the telescopic rod 3, a blocking groove 501 matching the plug 5 is opened inside the connecting hole 201, a limiting block 4 is fixedly connected to the middle part of the outer surface of the telescopic rod 3, a limiting groove 401 matching the limiting block 4 is opened on the inner wall of the valve core 2, a knob 301 is fixedly connected to the top end of the telescopic rod 3, and a connecting plate 6 is movably connected to the upper end of the outer surface of the telescopic rod 3 through a connecting ring 601, a threaded interface 8 is fixedly connected to the upper surface of the valve core 2, and a reset spring 7 is fixedly connected to the upper surface of the telescopic rod 3.

[0024] In an embodiment of the utility model, the middle part of the outer surface of the telescopic rod 3 is fixedly connected to the limit block 4, the inner wall of the valve core 2 is provided with a limit groove 401 matching the limit block 4, and the middle part of the outer surface of the plug 5 is provided with a fan-shaped connecting groove 302 with an arc of forty-five degrees. After the three-way valve extension tube quickly stops the infusion, the telescopic rod 3 can be temporarily rotated to control the connecting groove 302 to connect the injection end of the patient's arm and the adjacent connecting port, so as to facilitate the suction of the remaining liquid at the injection end through the needle tube and the rapid injection of special intravenous drugs for patients with adverse reactions.

[0025] In an embodiment of the utility model, the curvature of the limit groove 401 is the same as that of the connecting groove 302, and both ends of the limit groove 401 are provided with embedded grooves matching the limit block 4, and the embedded grooves at both ends of the limit groove 401 are used to ensure that the forty-five degree rotation angle of the limit block 4 is controlled under the restriction of the limit groove 401, which is convenient for the use of the connecting groove 302; the plug 5 is composed of a cylinder and a hemisphere below it, and the length of the cylinder inside the plug 5 is greater than the diameter of the connecting hole 201. The longer upper end of the cylinder of the plug 5 completely blocks the connecting hole 201 when it is put down after being stored; the upper end of the reset spring 7 is located inside the connecting plate 6, and is in contact with the top of the inner wall of the connecting plate 6, and the inner wall of the connecting plate 6 is provided with threads matching the threaded interface 8. The groove is not connected to the inner wall of the connecting plate 6, and the reset spring 7 is not connected to the inner wall of the connecting plate 6 to avoid affecting the rotation of the connecting plate 6 and the connection with the threaded interface 8; the inner wall of the connecting ring 601 is provided with a slider, and the outer wall of the telescopic rod 3 is provided with a sliding groove matching the slider. After the telescopic rod 3 stops moving downward, the connecting ring 601 can be controlled to continue to move downward to fix the telescopic rod 3; the distance from the lower surface of the connecting plate 6 to the upper surface of the threaded interface 8 is equal to the distance from the blocking groove 501 to the bottom end of the inner wall of the connecting hole 201, and the length of the sliding groove on the outer wall of the telescopic rod 3 is less than the vertical height of the threaded groove on the inner wall of the connecting plate 6, so that before the connecting plate 6 and the threaded interface 8 are threadedly connected to the limit, the connecting ring 601 can drive the slider to press the telescopic rod 3 to prevent the telescopic rod 3 from being unstable and causing incomplete sealing of the liquid medicine.

[0026] Working principle: This embodiment provides a new type of medical infusion three-way valve extension tube. After the symptoms of acute pulmonary edema occur during the infusion process, the plug 5 at the lower end of the telescopic rod 3 is directly pressed to completely close the blocking groove 501 opened in the middle of the valve core 2. After the infusion process is initially interrupted, the connecting plate 6 is manually rotated to rotate on the outer surface of the connecting ring 601, and then the connecting ring 601 is pressed down in the threaded connection between the connecting plate 6 and the threaded interface 8 so that the slider on the inner side of the connecting ring 601 moves to the bottom end of the slide groove to limit the telescopic rod 3 from bouncing up under the action of the compressed force of the return spring 7, so as to avoid the infusion interruption caused by the uncertain rotation angle of the handle on the outer side of the valve core 2. At the same time, through the forty-five degree arc fan-shaped connecting groove 302, after the three-way valve extension tube quickly stops the infusion, the telescopic rod 3 can be temporarily rotated to control the connecting groove 302 to connect to the injection end of the patient's arm and the adjacent connecting port, so as to facilitate the suction of the remaining liquid at the injection end through the needle tube, and perform a rapid intravenous special drug injection operation on patients with adverse reactions.

[0027] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A novel medical infusion three-way valve extension tube, comprising a valve body (1), characterized in that: A valve core (2) is arranged inside the valve body (1), a connecting hole (201) is provided inside the valve core (2), a telescopic rod (3) is movably connected to the middle part of the valve core (2), a plug (5) is fixedly connected to the lower end of the telescopic rod (3), a blocking groove (501) matching the plug (5) is provided inside the connecting hole (201), a knob (301) is fixedly connected to the top end of the telescopic rod (3), an upper end of the outer surface of the telescopic rod (3) is movably connected to a connecting plate (6) via a connecting ring (601), a threaded interface (8) is fixedly connected to the upper surface of the valve core (2), and a reset spring (7) is fixedly connected to the upper surface of the telescopic rod (3).

2. A novel medical infusion three-way valve extension tube according to claim 1, characterized in that: The middle of the outer surface of the telescopic rod (3) is fixedly connected to a limit block (4), the inner wall of the valve core (2) is provided with a limit groove (401) matching the limit block (4), and the middle of the outer surface of the plug (5) is provided with a fan-shaped connecting groove (302) with an arc of forty-five degrees.

3. A novel medical infusion three-way valve extension tube according to claim 2, characterized in that: The curvature of the limiting groove (401) is the same as that of the connecting groove (302), and both ends of the limiting groove (401) are provided with embedding grooves matching the limiting block (4).

4. The novel medical infusion three-way valve extension tube according to claim 1 is characterized in that: The plug (5) is composed of a cylinder and a hemisphere below it, and the length of the cylinder inside the plug (5) is greater than the diameter of the connecting hole (201).

5. The novel medical infusion three-way valve extension tube according to claim 1 is characterized in that: The upper end of the return spring (7) is located inside the connecting plate (6) and fits in with the top of the inner wall of the connecting plate (6). The inner wall of the connecting plate (6) is provided with thread grooves matching the threaded interface (8) around it.

6. The novel medical infusion three-way valve extension tube according to claim 1 is characterized in that: The inner wall of the connecting ring (601) is provided with a sliding block, and the outer wall of the telescopic rod (3) is provided with a sliding groove matching the sliding block.

7. The novel medical infusion three-way valve extension tube according to claim 1 is characterized by: The distance from the lower surface of the connecting plate (6) to the upper surface of the threaded interface (8) is equal to the distance from the blocking groove (501) to the bottom end of the inner wall of the connecting hole (201), and the length of the outer wall sliding groove of the telescopic rod (3) is less than the vertical height of the inner wall thread groove of the connecting plate (6).

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