Contrast agent injector capable of preventing repeated use

Abstract

The utility model belongs to the technical field of medical tools, and particularly relates to a contrast agent injector capable of preventing repeated use, which comprises an injection barrel, one end of the injection barrel is communicated and fixedly mounted with one end of a butt joint, an injection rod is mounted in the injection barrel, and a rubber plug is fixedly mounted at one end of the injection rod; when the rubber plug is extruded to the tail end of the push-injection barrel through the push-injection rod, thrust is increased, the rubber plug deforms, the end of the rubber plug is extruded into a butt joint channel of the push-injection barrel and the butt joint head, and the rubber plug is extruded into the butt joint channel along with entering of the rubber plug. The rubber plug can drive the separating head to enter the space between the first circulation ring and the second circulation ring, one end of the separating head can be blocked by the first circulation ring after the separating head completely enters, and therefore the separating head cannot be separated from the first circulation ring and the second circulation ring, and the injector cannot be used again. Therefore, the condition of repeated utilization can be effectively prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical tools, and in particular relates to a contrast agent pusher that can prevent repeated use. Background Art

[0002] Contrast agents, also known as contrast agents or developers, are chemicals used in medical imaging examinations. Their main purpose is to enhance image observation and help doctors better observe the internal conditions of the body for accurate diagnosis and treatment. Contrast agents are injected or taken into human tissues or organs. Because their density is higher or lower than that of surrounding tissues, they can form a contrast, allowing certain instruments to display clearer images.

[0003] There are many types of contrast agents depending on the usage scenario and imaging technology. For example, X-ray contrast agents commonly used include iodine preparations and barium sulfate, among which iodine compounds have many different types in recent years. The contrast agents used in nuclear magnetic resonance imaging are mainly gadolinium-based contrast agents. Ultrasound contrast agents are divided into microbubble contrast agents wrapped in fluorocarbon gas and liquid fluorocarbon nanocontrast agents according to their different components.

[0004] When using contrast agents, we usually need to use a pusher to inject them into the patient's body. At present, the mainstream pushers on the market are mostly conventional injection tools, which remain intact after use. However, if you are not careful during the operation, the pusher may be misused by the next patient without being damaged. This reuse situation undoubtedly increases the risk of cross-infection and poses a potential threat to the patient's health. Therefore, we urgently need to design a new type of contrast agent pusher that can effectively prevent reuse and ensure the safety of every patient. Utility Model Content

[0005] The purpose of the utility model is to provide a contrast agent pusher that prevents reuse, aiming to solve the problem that when using contrast agent, we usually need to inject it into the patient's body with the help of a pusher. At present, the mainstream pushers on the market are mostly conventional injection tools, which remain intact as a whole after use. However, if you are not careful during the operation, the pusher may be misused by the next patient without being damaged. This kind of reuse undoubtedly increases the risk of cross infection and poses a potential threat to the patient's health. Therefore, we urgently need to design a new contrast agent pusher that can effectively prevent reuse, thereby ensuring the safety of each patient.

[0006] To achieve the above object, the utility model provides the following technical solution: a contrast agent pusher for preventing reuse, comprising a pusher barrel, one end of which is connected to one end of a docking joint and fixedly installed together, a pusher rod is installed inside the pusher barrel, and a rubber plug is fixedly installed at one end of the pusher rod;

[0007] A connecting column is fixedly installed at one end of the rubber stopper, a docking column is fixedly installed at the other end of the connecting column, a detachment head is fixedly installed at the other end of the docking column, a first circulation ring is arranged at one end of the detachment head, and a second circulation ring is arranged at one end of the first circulation ring.

[0008] In order to leave no gap between the first circulation ring and the second circulation ring and the connecting end of the docking head, as a preferred contrast agent injector that prevents reuse of the utility model, the outer walls of the first circulation ring and the second circulation ring are sealed and fixedly mounted on the inner wall of the docking head, and the distance between the first circulation ring and the second circulation ring is smaller than the lateral thickness of the separation head.

[0009] In order to achieve the function of hindering resetting of the detachment head, as a preferred contrast agent injector for preventing reuse of the utility model, a funnel-shaped through hole is provided on the first circulation ring, and the maximum opening size of the funnel-shaped through hole is larger than the maximum diameter size of the detachment head, and the minimum opening size of the through hole and the funnel-shaped through hole on the second circulation ring is smaller than the maximum diameter size of the detachment head.

[0010] In order to allow the detachment head, the first circulation ring and the second circulation ring to form a sealing structure inside the docking head, as a preferred contrast agent injector to prevent reuse of the utility model, the detachment head is made of flexible rubber material, and the detachment head forms a sealing structure between the first circulation ring and the second circulation ring.

[0011] In order to enable the docking post to break when pulled backwards, as a preferred contrast agent injector to prevent reuse of the utility model, the docking post is made of flexible rubber material, and the diameter of the docking post is one third of the diameter of the connecting post.

[0012] In order to be able to squeeze the detachment head between the first circulation ring and the second circulation ring, as a preferred contrast agent injector to prevent reuse of the utility model, the rubber plug is made of flexible rubber material, and the maximum deformation size of the rubber plug is greater than the minimum horizontal vertical length between the first circulation ring and the second circulation ring.

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

[0014] When the rubber stopper is squeezed to the end of the push barrel by the push rod, the thrust is increased at this time, so that the rubber stopper will be deformed, and the end of the rubber stopper will be squeezed into the docking channel between the push barrel and the docking head. As the rubber stopper enters, the rubber stopper will drive the escape head into between the first circulation ring and the second circulation ring. After the escape head is completely entered, one end of the escape head will be blocked by the first circulation ring, so that the escape head cannot be separated from the first circulation ring and the second circulation ring, and the injector cannot be used again, thereby effectively preventing the occurrence of reuse. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 This is a schematic diagram of the cross-sectional structure of the push-injection barrel of the utility model;

[0017] Figure 2 This is a schematic diagram of the assembly structure of the push-injection barrel of the utility model;

[0018] Figure 3 This is a schematic diagram of the distribution structure of the peripheral parts of the first circulation ring of the utility model;

[0019] Figure 4 It is a schematic diagram of the connection structure of the docking column of the utility model.

[0020] In the figure: 1. injection barrel; 2. docking joint; 3. injection rod; 4. rubber plug; 5. connecting column; 6. docking column; 7. separation head; 8. first circulation ring; 9. second circulation ring. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4 The utility model provides the following technical solutions: a contrast agent pusher for preventing reuse, comprising a pusher barrel 1, one end of which is connected to one end of a docking head 2 and fixedly installed together, a pusher rod 3 is installed inside the pusher barrel 1, and a rubber plug 4 is fixedly installed at one end of the pusher rod 3;

[0023] After assembling the pusher barrel 1, the docking joint 2, the pusher rod 3 and the rubber stopper 4, a pusher specifically for contrast medium is formed. When in use, the contrast medium is extracted through the pusher, and then the contrast medium in the pusher is injected into the patient's body, which makes it convenient for the doctor to carry out the next step of diagnostic operation.

[0024] A connecting column 5 is fixedly installed at one end of the rubber stopper 4, a docking column 6 is fixedly installed at the other end of the connecting column 5, a disengagement head 7 is fixedly installed at the other end of the docking column 6, a first circulation ring 8 is arranged at one end of the disengagement head 7, and a second circulation ring 9 is arranged at one end of the first circulation ring 8.

[0025] Preferably: the outer walls of the first circulation ring 8 and the second circulation ring 9 are sealed and fixedly installed on the inner wall of the docking head 2, the distance between the first circulation ring 8 and the second circulation ring 9 is smaller than the lateral thickness of the separation head 7, a funnel-shaped through hole is provided on the first circulation ring 8, and the maximum opening size of the funnel-shaped through hole is larger than the maximum diameter size of the separation head 7, and the minimum opening size of the through hole and the funnel-shaped through hole on the second circulation ring 9 is smaller than the maximum diameter size of the separation head 7.

[0026] During specific use, the funnel-shaped through hole on the first circulation ring 8 allows the detachment head 7 to pass through the first circulation ring 8 normally, but when the detachment head 7 is pulled backward after passing through, the funnel-shaped through hole on the first circulation ring 8 will prevent the detachment head 7 from retreating.

[0027] Preferably, the separation head 7 is made of flexible rubber material, and the separation head 7 forms a sealing structure between the first circulation ring 8 and the second circulation ring 9 .

[0028] During specific use, the sealing structure between the separation head 7, the first circulation ring 8 and the second circulation ring 9 can block the circulation channel inside the docking head 2, so that the pusher cannot be used further.

[0029] Preferably, the docking column 6 is made of flexible rubber material, and the diameter of the docking column 6 is one third of the diameter of the connecting column 5 .

[0030] During specific use, due to the small size and flexibility of the docking post 6 , when subjected to a large pulling force, the docking post 6 will break, thereby enabling the separation head 7 to be retained between the first circulation ring 8 and the second circulation ring 9 .

[0031] Preferably, the rubber stopper 4 is made of flexible rubber material, and the maximum deformation dimension of the rubber stopper 4 is greater than the minimum horizontal vertical length between the first circulation ring 8 and the second circulation ring 9 .

[0032] During specific use, when the rubber plug 4 is subjected to excessive extrusion pressure, the rubber plug 4 will be deformed, and one end of the rubber plug 4 will enter the internal channel of the docking head 2 with the deformation and extrusion, so that the separation head 7 can be squeezed into between the first circulation ring 8 and the second circulation ring 9.

[0033] Working principle: When enough contrast medium is drawn from the pusher, the butt joint 2 on the pusher is connected to the corresponding retention tube interface, and then the tail of the push rod 3 is squeezed, so that the contrast medium inside the pusher barrel 1 will enter the patient's body through the retention tube;

[0034] In order to prevent the syringe from being repeatedly used, medical staff needs to increase the squeezing force on the syringe rod 3 in the final stage of use. As the squeezing force of the syringe rod 3 increases, the syringe rod 3 will squeeze and deform the rubber plug 4. After the rubber plug 4 is deformed, one end of the rubber plug 4 will enter the interior of the docking head 2, so that the rubber plug 4 will drive the disengagement head 7 to enter between the first circulation ring 8 and the second circulation ring 9. Since the opening on one side of the first circulation ring 8 is smaller than the size of one side of the disengagement head 7, the disengagement head 7 will be stuck between the first circulation ring 8 and the second circulation ring 9, and the internal channel of the docking head 2 will be closed, so that the syringe cannot be used again.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A contrast agent pusher for preventing reuse, comprising a pusher barrel (1), one end of the pusher barrel (1) is connected to one end of a docking head (2) and fixedly mounted together, a pusher rod (3) is installed inside the pusher barrel (1), and is characterized in that: A rubber plug (4) is fixedly mounted on one end of the injection rod (3); A connecting column (5) is fixedly mounted on one end of the rubber stopper (4), a docking column (6) is fixedly mounted on the other end of the connecting column (5), a detaching head (7) is fixedly mounted on the other end of the docking column (6), a first circulation ring (8) is arranged at one end of the detaching head (7), and a second circulation ring (9) is arranged at one end of the first circulation ring (8).

2. The contrast medium injector for preventing reuse according to claim 1, characterized in that: The outer walls of the first circulation ring (8) and the second circulation ring (9) are both sealed and fixedly mounted on the inner wall of the butt joint (2), and the distance between the first circulation ring (8) and the second circulation ring (9) is smaller than the transverse thickness of the separation head (7).

3. The contrast medium injector for preventing reuse according to claim 1, characterized in that: The first circulation ring (8) is provided with a funnel-shaped through hole, and the maximum opening size of the funnel-shaped through hole is larger than the maximum diameter size of the separation head (7), and the minimum opening size of the through hole and the funnel-shaped through hole on the second circulation ring (9) is smaller than the maximum diameter size of the separation head (7).

4. The contrast medium injector for preventing reuse according to claim 1, characterized in that: The detachment head (7) is made of a flexible rubber material, and the detachment head (7) forms a sealing structure between the first circulation ring (8) and the second circulation ring (9).

5. The contrast agent injector for preventing reuse according to claim 1, characterized in that: The docking column (6) is made of a flexible rubber material, and the diameter of the docking column (6) is one third of the diameter of the connecting column (5).

6. The contrast medium injector for preventing reuse according to claim 1, characterized in that: The rubber plug (4) is made of flexible rubber material, and the maximum deformation dimension of the rubber plug (4) is greater than the minimum horizontal vertical length between the first circulation ring (8) and the second circulation ring (9).

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