Contrast agent injector
By designing the injection cavity, input cavity and pushing mechanism of the contrast agent bolus injector, the problem of residual contrast agent residue on the inner wall of the injection needle tube is solved, and the efficiency of complete injection of contrast agent and image examination is improved.
Patent Information
- Application Number
- CN202420021634.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-05
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-01-05
AI Technical Summary
Contrast agent is prone to remain on the inner wall of the injection needle, making it difficult to fully utilize.
A contrast agent boring injector is designed, including an injection cavity, a contrast agent input cavity and a pushing mechanism. By setting the contrast agent input cavity on the side wall of the injection cavity and connecting it with the injection cavity, the contrast agent is pushed all the contrast agent by using gravity and pushing mechanism. Inject the injection mechanism to ensure that the contrast agent is completely injected into the human body.
It effectively avoids the residue of contrast agent in the injection cavity, ensures the complete utilization of contrast agent, and improves the efficiency of imaging examination.
Smart Images
Figure CN222130707U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of medical devices, and in particular relates to a contrast agent injector. Background Art
[0002] Contrast media is a substance used in medical imaging examinations. It is injected or applied into the body to make certain organs and tissues more visible during imaging examinations. Contrast media can be divided into two categories: non-ionic contrast media and ionic contrast media. Non-ionic contrast media are made of non-ionized polymers, such as sodium iodide (NaI), potassium iodide (KI), and ammonium iodide (NH4I). Non-ionic contrast media are widely distributed in the body and have high safety. They are mainly used for X-ray, CT, MRI and other examinations. Ionic contrast agents are made of ionized polymers, such as iodide (such as Iopamidol) and gadolinium-based contrast agents (such as gadolinium-DTPA) used for methylene iodide (Magnetic Resonance Imaging, MRI). Ionic contrast agents have high magnetism in the body and can be used for magnetic resonance imaging (MRI) examinations. When doctors examine patients, they need to choose appropriate contrast agents according to the specific conditions of the patients. After injecting the contrast agent, the doctor will determine whether there is a problem based on the results of the imaging examination.
[0003] Contrast agents are usually injected into the human body using a syringe, which easily causes the contrast agent to remain on the inner wall of the syringe, making it difficult to fully utilize it. Utility Model Content
[0004] In view of this, the utility model provides a contrast agent pusher, which can solve the problem that contrast agent is usually injected into the human body using an injection needle, which easily causes contrast agent to remain on the inner wall of the needle and is difficult to fully utilize.
[0005] The utility model is achieved in this way:
[0006] The utility model provides a contrast agent pusher, which comprises an injection cavity, a contrast agent input cavity, a pushing mechanism and an injection mechanism, wherein the contrast agent input cavity is arranged on the side wall of the injection cavity, the pushing mechanism is arranged inside the injection cavity and is used for pushing the contrast agent to the injection mechanism position, and the injection mechanism is fixed at the bottom of the injection cavity and is used for injecting contrast agent into a human body.
[0007] The technical effects of a contrast agent pusher provided by the utility model are as follows: by setting the injection cavity, the contrast agent is pushed and injected into the human body; by setting the contrast agent input cavity, force is applied to the contrast agent from two directions, so that the contrast agent can completely enter the injection mechanism, which can solve the problem that the contrast agent is usually injected into the human body using an injection needle, which easily causes the contrast agent to remain on the inner wall of the needle tube and is difficult to fully utilize; by setting the pushing mechanism, the contrast agent is further pushed to be injected into the human body through the injection mechanism, and the pressure inside the injection cavity is reduced by pushing, so that the contrast agent can be completely injected; by setting the injection mechanism, the contrast agent is injected into the human body for imaging examination.
[0008] On the basis of the above technical solution, a contrast agent pusher of the utility model can also be improved as follows:
[0009] The contrast agent input cavity and the injection cavity are arranged at an angle of 40-60 degrees, and the injection cavity and the contrast agent input cavity are integrally connected.
[0010] The beneficial effect of adopting the above-mentioned improved scheme is: by setting the angle between the contrast agent input cavity and the injection cavity to be 40-60°, the contrast agent can enter the injection cavity completely due to the action of gravity, and at the same time, a downward acceleration is given to the contrast agent entering the injection cavity from the contrast agent input cavity, so that the contrast agent can be completely injected into the human body through the injection mechanism to avoid remaining inside the injection cavity.
[0011] Furthermore, a through hole is provided on the side wall of the injection cavity, and the size of the through hole is the same as the inner diameter of the contrast agent input cavity.
[0012] The beneficial effect of adopting the above-mentioned improved solution is that by providing the through hole, the injection cavity and the contrast agent input cavity are connected through.
[0013] Furthermore, the shape of the through hole is the same as the cross-sectional shape of the contrast agent input cavity.
[0014] Furthermore, the pushing mechanism includes a push rod and a piston, the piston is arranged inside the injection cavity, and the push rod is fixedly connected to the center position of one side of the piston.
[0015] The beneficial effect of adopting the above-mentioned improvement scheme is: by arranging the push rod and the piston, the contrast agent is further pushed to be injected into the human body through the injection mechanism, and the pressure inside the injection chamber is reduced by pushing, so that the contrast agent can be completely injected.
[0016] Furthermore, a through hole is provided at the top of the injection cavity, and the push rod extends out of the injection cavity through the through hole.
[0017] Furthermore, the inner diameter of the through hole is the same as the outer diameter of the piston.
[0018] Furthermore, a flexible rubber layer is provided at a position where the piston contacts the inner wall of the injection chamber, and the flexible rubber layer is used to seal the piston and the inner wall of the injection chamber.
[0019] Furthermore, the injection mechanism is an injection needle, and the injection needle is connected to the injection cavity.
[0020] Furthermore, the contrast agent input cavity contains contrast agent.
[0021] Compared with the prior art, the contrast agent pusher provided by the utility model has the following beneficial effects: by setting the injection cavity, the contrast agent is pushed and injected into the human body; by setting the contrast agent input cavity, force is applied to the contrast agent from two directions, so that the contrast agent can completely enter the injection mechanism, which can solve the problem that contrast agent is usually injected into the human body using an injection needle, which easily causes the contrast agent to remain on the inner wall of the needle tube and is difficult to fully utilize; by setting the pushing mechanism, the contrast agent is further pushed to be injected into the human body through the injection mechanism, and the pressure inside the injection cavity is reduced by pushing, so that the contrast agent can be completely injected; by setting the injection mechanism, the contrast agent is injected into the human body for imaging examination. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments of the utility model will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0023] Figure 1 It is a structural schematic diagram of a contrast medium injector;
[0024] Figure 2 It is a structural diagram of the propulsion mechanism;
[0025] Figure 3 It is a schematic diagram of the structure of the piston;
[0026] Figure 4 It is a schematic diagram of the connection between the injection cavity and the contrast medium input cavity;
[0027] In the accompanying drawings, the components represented by the reference numerals are listed as follows:
[0028] 10. Injection cavity; 20. Contrast agent input cavity; 30. Push mechanism; 31. Push rod; 32. Piston; 40. Injection mechanism. DETAILED DESCRIPTION
[0029] In order to make the purpose, technical solution and advantages of the implementation mode of the present invention clearer, the technical solution in the implementation mode of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the implementation mode of the present invention.
[0030] like Figure 1-4 As shown is a schematic diagram of the structure of a contrast agent injector provided by the utility model, in which the contrast agent injector includes an injection chamber 10, a contrast agent input chamber 20, a pushing mechanism 30 and an injection mechanism 40. The contrast agent input chamber 20 is arranged on the side wall of the injection chamber 10, and the pushing mechanism 30 is arranged inside the injection chamber 10 for pushing the contrast agent to the injection mechanism 40. The injection mechanism 40 is fixed at the bottom of the injection chamber 10 for injecting the contrast agent into the human body.
[0031] Among them, in the above technical solution, the contrast agent input cavity 20 and the injection cavity 10 are arranged at an angle of 40-60 degrees, and the injection cavity 10 and the contrast agent input cavity 20 are integrally connected.
[0032] Furthermore, in the above technical solution, a through hole is provided on the side wall of the injection cavity 10 , and the size of the through hole is the same as the inner diameter of the contrast agent input cavity 20 .
[0033] Furthermore, in the above technical solution, the shape of the through hole is the same as the cross-sectional shape of the contrast agent input cavity 20 .
[0034] Furthermore, in the above technical solution, the pushing mechanism 30 includes a push rod 31 and a piston 32 . The piston 32 is disposed inside the injection cavity 10 , and the push rod 31 is fixedly connected to the center position of one side of the piston 32 .
[0035] Furthermore, in the above technical solution, a through hole is provided at the top of the injection cavity 10 , and the push rod 31 extends to the outside of the injection cavity 10 through the through hole.
[0036] Furthermore, in the above technical solution, the inner diameter of the through hole is the same as the outer diameter of the piston 32 .
[0037] Furthermore, in the above technical solution, a flexible rubber layer is provided at the position where the piston 32 contacts the inner wall of the injection chamber 10 , and the flexible rubber layer is used to seal the piston 32 and the inner wall of the injection chamber 10 .
[0038] When in use, the contrast agent is added into the contrast agent input chamber 20 and sealed, so that the contrast agent input chamber 20 is injected into the interior of the injection chamber 10 by gravity, and the piston 32 is pushed inward by the push rod 31 to squeeze the contrast agent inside the injection chamber 10. At the same time, the air inside the injection chamber 10 and the contrast agent input chamber 20 is squeezed to the outside through the injection mechanism 40, thereby increasing the pressure inside the injection chamber 10 and the contrast agent input chamber 20, and the contrast agent is injected into the patient's body through the injection mechanism 40.
[0039] Furthermore, in the above technical solution, the injection mechanism 40 is an injection needle, and the injection needle is connected to the injection cavity 10 through the injection needle.
[0040] Furthermore, in the above technical solution, the contrast agent input cavity 20 contains contrast agent.
[0041] Embodiment 1:
[0042] The device comprises an injection chamber 10, a contrast agent input chamber 20, a pushing mechanism 30 and an injection mechanism 40. The contrast agent input chamber 20 is arranged on the side wall of the injection chamber 10. The pushing mechanism 30 is arranged inside the injection chamber 10 and is used to push the contrast agent to the position of the injection mechanism 40. The injection mechanism 40 is fixed to the bottom of the injection chamber 10 and is used to inject the contrast agent into the human body. The contrast agent input chamber 20 is arranged at 40 degrees to the injection chamber 10, and the injection chamber 10 is integrally connected to the contrast agent input chamber 20. A through hole is provided on the side wall of the injection chamber 10, and the size of the through hole is the same as the inner diameter of the contrast agent input chamber 20; the shape of the through hole is the same as the cross-sectional shape of the contrast agent input chamber 20; the pushing mechanism 30 includes a push rod 31 and a piston 32, the piston 32 is arranged inside the injection chamber 10, and the push rod 31 is fixedly connected to the center position of one side of the piston 32; a through hole is opened on the top of the injection chamber 10, and the push rod 31 extends to the outside of the injection chamber 10 through the through hole; the inner diameter of the through hole is the same as the outer diameter of the piston 32.
[0043] Embodiment 2:
[0044] The device comprises an injection chamber 10, a contrast agent input chamber 20, a pushing mechanism 30 and an injection mechanism 40. The contrast agent input chamber 20 is arranged on the side wall of the injection chamber 10. The pushing mechanism 30 is arranged inside the injection chamber 10 and is used to push the contrast agent to the position of the injection mechanism 40. The injection mechanism 40 is fixed at the bottom of the injection chamber 10 and is used to inject the contrast agent into the human body. The contrast agent input chamber 20 is arranged at 60 degrees with the injection chamber 10, and the injection chamber 10 is integrally connected with the contrast agent input chamber 20. A through hole is provided on the side wall of the injection chamber 10, and the size of the through hole is the same as the inner diameter of the contrast agent input chamber 20; the shape of the through hole is the same as the cross-sectional shape of the contrast agent input chamber 20; the pushing mechanism 30 includes a push rod 31 and a piston 32, the piston 32 is arranged inside the injection chamber 10, and the push rod 31 is fixedly connected to the center position of one side of the piston 32; a through hole is opened on the top of the injection chamber 10, and the push rod 31 extends to the outside of the injection chamber 10 through the through hole; the inner diameter of the through hole is the same as the outer diameter of the piston 32.
[0045] Specifically, the principle of the utility model is: when in use, the contrast agent is added into the contrast agent input chamber 20 and sealed, so that the contrast agent input chamber 20 is injected into the interior of the injection chamber 10 by gravity, and the piston 32 is pushed inward by the push rod 31 to squeeze the contrast agent inside the injection chamber 10, and at the same time, the air inside the injection chamber 10 and the contrast agent input chamber 20 is squeezed to the outside through the injection mechanism 40, thereby increasing the pressure inside the injection chamber 10 and the contrast agent input chamber 20, and the contrast agent is injected into the patient's body through the injection mechanism 40.
Claims
1. A contrast agent injector, characterized in that: The invention comprises an injection chamber (10), a contrast agent input chamber (20), a pushing mechanism (30) and an injection mechanism (40), wherein the contrast agent input chamber (20) is arranged on the side wall of the injection chamber (10), the pushing mechanism (30) is arranged inside the injection chamber (10) and is used for pushing the contrast agent to the position of the injection mechanism (40), and the injection mechanism (40) is fixed at the bottom of the injection chamber (10) and is used for injecting the contrast agent into the human body.
2. A contrast agent injector according to claim 1, characterized in that: The contrast agent input chamber (20) and the injection chamber (10) are arranged at an angle of 40-60 degrees, and the injection chamber (10) and the contrast agent input chamber (20) are integrally connected.
3. A contrast agent injector according to claim 2, characterized in that: A through hole is provided on the side wall of the injection cavity (10), and the size of the through hole is the same as the inner diameter of the contrast agent input cavity (20).
4. A contrast agent injector according to claim 3, characterized in that: The shape of the through hole is the same as the cross-sectional shape of the contrast agent input cavity (20).
5. A contrast agent injector according to claim 4, characterized in that: The pushing mechanism (30) comprises a push rod (31) and a piston (32); the piston (32) is arranged inside the injection chamber (10); and the push rod (31) is fixedly connected to the center position of one side of the piston (32).
6. A contrast agent injector according to claim 5, characterized in that: A through hole is provided at the top of the injection cavity (10), and the push rod (31) extends out of the injection cavity (10) through the through hole.
7. A contrast agent injector according to claim 6, characterized in that: The inner diameter of the through hole is the same as the outer diameter of the piston (32).
8. A contrast agent injector according to claim 7, characterized in that: A flexible rubber layer is sleeved on the position where the piston (32) contacts the inner wall of the injection chamber (10), and the flexible rubber layer is used to seal the piston (32) and the inner wall of the injection chamber (10).
9. A contrast agent injector according to claim 8, characterized in that: The injection mechanism (40) is an injection needle, and the injection needle is connected to the injection cavity (10).
10. A contrast agent injector according to claim 9, characterized in that: The contrast medium input cavity (20) contains contrast medium.