Load myocardial perfusion imaging injection kit

Abstract

The utility model relates to a load myocardial perfusion imaging injection suite which comprises a first extension tube, a first three-way connector, a second extension tube, a second three-way connector and a third extension tube which are sequentially connected, the inlet end of the first extension tube is connected with a high-pressure injector, the first three-way connector is used for injecting radionuclide, and the third three-way connector is used for injecting radionuclide. The second three-way connector is used for injecting load medicine, the second extension tube is arranged in a winding mode, the whole section of the second extension tube is arranged in the anti-radiation box, the volume of the second extension tube is larger than the total injection dosage of radionuclide, and a connector used for being connected with an indwelling needle is arranged at the tail end of the third extension tube. According to the utility model, two medicaments needing to be injected can be injected into the injection suite together for later use, so that the whole set of injection scheme can be completed by only one high-pressure injector, the infection risk is reduced, and the waste of medicaments is prevented. Enough radionuclides are directly pushed into the anti-radiation box during medicine preparation and then pushed out of the lead box during formal injection, so that the radiation exposure time of patients, nurses and technicians is effectively shortened.

Description

Technical Field

[0001] This utility model belongs to the field of myocardial perfusion imaging medical device technology, and in particular relates to a stress myocardial perfusion imaging injection kit. Background Technology

[0002] The ability of coronary blood flow to increase from a resting state to a congested state is called coronary flow reserve (CFR), which is the ratio of maximum coronary blood flow to resting blood flow. A CFR < 2.0 is considered abnormal. CFR reflects the overall condition of epicardial vessels and microcirculation, and both epicardial vascular and microvascular lesions can affect the CFR value.

[0003] Myocardial perfusion imaging under stress is an effective method for confirming a patient's coronary blood flow (CFR). Myocardial perfusion imaging uses radionuclides and labeled compounds as imaging agents. Because the radionuclides emit gamma rays, the entire process of the imaging agent's uptake, distribution, metabolism, and clearance in the myocardium can be visualized using an external gamma camera, single-photon computed tomography (SPCT), or positron emission tomography (PET). Radionuclide myocardial perfusion imaging can be divided into thallium-201 perfusion imaging, technetium-99 labeled compound myocardial perfusion imaging, etc., depending on the imaging agent used. Stress tests include exercise stress and pharmacological stress. Some patients who are not suitable for exercise stress will undergo pharmacological stress myocardial perfusion imaging. Pharmacological stress primarily includes adenosine receptor agonists such as levofloxacin, as well as receptor agonists such as dipyridamole and dobutamine, which can increase coronary blood flow.

[0004] In clinical practice, when preparing for myocardial perfusion imaging, nurses typically need to connect multiple extension tubes and three-way stopcocks, and then inject the radionuclide and loading drug into two high-pressure injectors for later use. Subsequently, an automated injection program is set according to the drug injection sequence and timing. Only after preparation is complete can the technician start the automated drug delivery system and leave the injection room. In practice, if problems arise after drug preparation and injection cannot be performed in a timely manner, the patient, technician, and nurse will be unnecessarily exposed to the radionuclide's radiation environment. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a stress myocardial perfusion imaging injection kit that improves preparation and injection efficiency while providing protection against radionuclides during drug preparation and injection, thereby reducing the radiation exposure time of patients, nurses, and technicians.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: a load myocardial perfusion imaging injection kit is provided, including a first extension tube, a first three-way connector, a second extension tube, a second three-way connector, and a third extension tube connected in sequence. The inlet end of the first extension tube is connected to a high-pressure injector. The side ends of the first three-way connector and the second three-way connector are provided with injection ports. A one-way valve is provided in the injection port. The first three-way connector is used to inject radioactive nuclides, and the second three-way connector is used to inject load drugs. The second extension tube is arranged in a coiled manner and its entire length is placed in a radiation shielding box. The volume of the second extension tube is greater than the total injection volume of the radioactive nuclides. The end of the third extension tube is provided with an interface for connecting to an indwelling needle.

[0007] Preferably, the third extension tube is connected to the indwelling needle via a needleless infusion connector.

[0008] Preferably, the radiation shielding box is a lead box.

[0009] Preferably, the device also includes a bracket, the top of which is provided with a first hanging point for suspending the high-pressure injector, the middle section of which is provided with a second hanging point for suspending the radiation shield box, and the lower section of which is provided with a third hanging point for suspending the indwelling needle.

[0010] Preferably, the third extension tube is arranged in a wound manner, and the volume of the third extension tube is greater than the total injection volume of the loaded drug.

[0011] Beneficial effects

[0012] Compared to existing injection protocols, this injection kit avoids the contamination or waste of medication caused by repeatedly connecting extension tubes and T-junctions. It also allows for the simultaneous injection of both required medications into the kit for later use, thus requiring only one high-pressure injector to complete the entire injection protocol. A sufficient amount of radionuclide is directly pushed into the radiation shield during preparation and only removed from the lead box during the actual injection, effectively reducing radiation exposure time for both patients and technicians. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a load myocardial perfusion imaging injection kit.

[0014] Among them, 1-indwelling needle; 2-high pressure injector; 3-first extension tube; 4-first tee connector; 5-lead box; 6-second extension tube; 7-second tee connector; 8-third extension tube; 9-interface; 10-needle-free infusion connector; 11-medication port. Detailed Implementation

[0015] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0016] like Figure 1 As shown, this utility model provides a load myocardial perfusion imaging injection kit, including a first extension tube 3, a first three-way connector 4, a second extension tube 6, a second three-way connector 7, and a third extension tube 8 connected in sequence. The inlet end of the first extension tube 3 is connected to a high-pressure injector 2. The side ends of the first three-way connector 4 and the second three-way connector 7 are provided with injection ports 11, and the injection ports 11 are provided with one-way valves. The first three-way connector 4 is used to inject radioactive nuclides, and the second three-way connector 7 is used to inject load drugs. The second extension tube 6 is arranged in a coiled manner and its entire length is placed in a radiation shielding box. The volume of the second extension tube 6 is greater than the total injection dose of the radioactive nuclide. The end of the third extension tube 3 is provided with an interface 9 for connecting to an indwelling needle 1.

[0017] In one specific embodiment, the present invention further includes a bracket, the top of which is provided with a first hanging point for suspending the high-pressure injector 2, the middle section of which is provided with a second hanging point for suspending the radiation shield box, and the lower section of which is provided with a third hanging point for suspending the indwelling needle 1.

[0018] In one specific embodiment, the radiation shielding box is a lead box 5, with pipe openings at both ends of the lead box 5. The pipe openings are respectively connected to a first tee connector 4 and a second tee connector 7. The second extension tube 6, located between the first tee connector 4 and the second tee connector 7, is placed entirely inside the radiation shielding box to ensure that the injected radioactive nuclide flows directly into the radiation shielding box, thereby reducing the radiation exposure time of patients, nurses, and technicians.

[0019] In one specific embodiment, the third extension tube 8 is connected to the indwelling needle 1 with a needleless infusion connector 10 via the interface 9, so that when performing stress myocardial perfusion imaging for different patients, only the needleless infusion connector 10 needs to be replaced, while the injection kit remains unaffected, thereby improving the reusability rate and avoiding cross-infection.

[0020] In one specific embodiment, the third extension tube 8 is arranged in a wound manner, and the volume of the third extension tube 8 is greater than the total injection volume of the loaded drug.

[0021] Specifically, the first extension tube 3 has a length of 1500mm and a volume of 2ml; the second extension tube 6 has a length of 1500mm and a volume of 2ml; and the third extension tube 8 has a length of 1800mm and a volume of 5ml.

[0022] In one specific embodiment, the steps of using this utility model are as follows: 1. Medication preparation: Connect the needleless infusion connector 10 to the interface 9 of this application; fill the high-pressure injector 2 with physiological saline; start the high-pressure injector 2 to purge the air from the tubing with physiological saline, and then connect the needleless infusion connector 10 to the patient's indwelling needle 1; inject the radionuclide technetium-99mTc-MIBI into the second extension tube 6 through the injection port 11 on the first three-way connector 4, and the radionuclide flows directly into the radiation shielding box for temporary storage during injection; inject the loading drug Reganoxen injection solution into the third extension tube 8 through the injection port 11 on the second three-way connector 7. 2. Injection: Set the injection time for the high-pressure injector 2, and inject Reganoxen into the patient's body through the indwelling needle 1 within 10 seconds; inject the radionuclide into the patient's body again after an interval of 10-20 seconds, and simultaneously perform imaging on the patient; after completing the loading myocardial perfusion imaging, disconnect the interface 9 from the needleless infusion connector 10 and replace the needleless infusion connector 10.

Claims

1. A stress myocardial perfusion imaging injection kit, characterized in that, The device includes a first extension tube, a first tee connector, a second extension tube, a second tee connector, and a third extension tube connected in sequence. The inlet end of the first extension tube is connected to a high-pressure injector. Both the first and second tee connectors have injection ports on their sides, each with a one-way valve. The first tee connector is used to inject a radioactive nuclide, and the second tee connector is used to inject a loading drug. The second extension tube is coiled and its entire length is placed inside a radiation shielding box. The volume of the second extension tube is greater than the total injection dose of the radioactive nuclide. The end of the third extension tube has an interface for connecting to an indwelling needle.

2. The myocardial perfusion imaging injection kit according to claim 1, characterized in that, The third extension tube is connected to the indwelling needle via a needleless infusion connector.

3. The myocardial perfusion imaging injection kit according to claim 1, characterized in that, The radiation shielding box is a lead box.

4. The myocardial perfusion imaging injection kit according to claim 1, characterized in that, It also includes a bracket, the top of which is provided with a first hanging point for suspending the high-pressure injector, the middle section of which is provided with a second hanging point for suspending the radiation shield box, and the lower section of which is provided with a third hanging point for suspending the indwelling needle.

5. The myocardial perfusion imaging injection kit according to claim 1, characterized in that, The third extension tube is arranged in a wound manner, and the volume of the third extension tube is greater than the total injection volume of the loaded drug.

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