CN116077759B - Radiopharmaceutical injection device and working method thereof - Google Patents

Abstract

The embodiment of the application provides a radiopharmaceutical injection device and a working method thereof, wherein the radiopharmaceutical injection device comprises: a base, an injection needle, a syringe assembly, and a push assembly; the injection needle is arranged on the base; the syringe assembly is arranged on the base and can move along a first direction relative to the base, the syringe assembly is provided with a first position and a second position, the syringe assembly comprises a first syringe and a second syringe, physiological saline is arranged in the first syringe, and a radioactive drug is arranged in the second syringe; the pushing component is arranged on the base, and can move along a second direction relative to the base, the first direction is perpendicular to the second direction, wherein the first injector is communicated with the injection needle under the condition that the injector component is positioned at a first position, and the pushing component moves along the second direction and pushes the first injector; with the syringe assembly in the second position, the second syringe is in communication with the injection needle, and the pushing assembly moves in the second direction and pushes the second syringe.

Description

Radiopharmaceutical injection device and working method thereof

Technical field

The present application belongs to the technical field of medical devices, and in particular relates to a radioactive drug injection device and its working method.

Background technique

In radionuclide imaging diagnosis, dynamic imaging technology is a commonly used diagnostic technology, such as the application of renal dynamic imaging technology to diagnose kidney function, the application of three-phase bone imaging technology to diagnose osteomyelitis, and the application of cerebrovascular dynamic imaging Technology plays a vital role in diagnosing cerebrovascular diseases. Dynamic imaging technology usually requires the use of a pellet injection method for intravenous injection of radionuclides. High-concentration, small-volume radiopharmaceuticals are injected into the vein under high pressure, so that the radiopharmaceuticals enter the organs to be detected in a highly aggregated state. This method puts forward higher requirements for manual injection. According to statistics, the current failure rate of artificial pellet injection is about 5%, and the suboptimal rate is about 10%. Failure of bolus injection is a common pain point problem with no good solution. Especially in renal dynamic imaging, poor quality of bolus injection will directly cause a false reduction in glomerular filtration rate (GFR), thereby affecting imaging diagnosis. Accuracy of results. Bolus injection relies on the doctor's operating experience. If the pellet injection fails, the patient will not be able to continue with subsequent imaging on the same day. Even experienced doctors still bear a heavy psychological burden. In terms of injection safety, the radiation protection effect provided by the necessary exposed interface syringe shield is only about 46%.

Contents of the invention

Embodiments of the present application provide a radiopharmaceutical injection device and a working method thereof, which are used to solve the problems of projectile failure risk and radiation damage caused by the instability of manual injection of radiopharmaceuticals.

The embodiment of the first aspect of the present application also provides a radiopharmaceutical injection device, including: a base; an injection needle disposed on the base; and a syringe assembly disposed on the base, and the syringe assembly can move along a first edge relative to the base directional movement, the syringe assembly has a first position and a second position, the syringe assembly includes a first syringe and a second syringe, the first syringe is provided with physiological saline, and the second syringe is provided with radioactive medicine; the pushing assembly is arranged on the base , the pushing component can move in a second direction relative to the base, and the first direction is perpendicular to the second direction; wherein, when the syringe component is in the first position, the first syringe is connected with the injection needle, and the pushing component moves in the second direction The first syringe is moved and pushed; when the syringe assembly is in the second position, the second syringe is connected with the injection needle, and the pushing assembly moves in the second direction and pushes the second syringe.

In some optional embodiments, the injection needle includes: an injection part, which can be connected to the patient's vein; a movable part, which is provided on the base, and the movable part can move in the second direction relative to the base, and the movable part is connected with the pusher The components are arranged at intervals, and the first syringe or the second syringe is arranged between the movable part and the pushing component, wherein when the movable part moves in the second direction, the movable part can communicate with the first syringe or the second syringe.

In some optional embodiments, the method further includes: a shielding component disposed on the base, the shielding component has a receiving space, the second syringe is disposed in the receiving space, and the shielding component and the second syringe can move in the first direction relative to the base. .

In some optional embodiments, the shielding assembly includes: a shell, which is disposed on the base; the shell is provided with a receiving cavity; a first shielding body and a second shielding body, the first shielding body and the second shielding body are disposed on the receiving cavity; In the cavity, one end of the second shielding body is sleeved on the first shielding body, and the first shielding body can move relative to the second shielding body. Both the first shielding body and the second shielding body are hollow structures, and the first shielding body and The second shield forms a receiving space, wherein when the movable part moves in the second direction, the movable part drives the first shield to move relative to the second shield, so that the second syringe extends out of the first shield and connects with the movable part Connected.

In some optional embodiments, the shielding assembly further includes: an elastic member that is sleeved on the first shielding body, one end of the elastic member is connected to the first shielding body, and the other end is in contact with the second shielding body.

In some optional embodiments, the shielding assembly further includes: a third shielding body connected to the second shielding body. The third shielding body includes a connecting portion and an extension portion. The connecting portion is connected to the second shielding body. The connecting portion is provided with The through hole has an extension part connected to the peripheral side of the through hole and extends in a direction away from the connection part. The needle barrel of the second syringe is arranged in the receiving space, and the push handle penetrates through the through hole and is arranged in the extension part.

In some optional embodiments, the extension portion is provided with a through groove, the through groove extends along the second direction, and the pushing position of the second syringe can be observed through the through groove.

In some optional embodiments, a scale is provided on the peripheral side of the through groove, and the scale is used to indicate the pushing distance of the second syringe.

In some optional embodiments, the housing is provided with a limiting groove, and the limiting groove is used to connect with the protection component.

In some optional embodiments, the protection component includes a limiting block, a first protective sleeve and a second protective sleeve. The first protective sleeve and the second protective sleeve are detachably connected, and the first protective sleeve and the second protective sleeve are hollow. structure, and the first protective cover and the second protective cover form a receiving cavity, the shielding component is arranged in the receiving cavity, the limiting block is arranged on the side of the first protective cover close to the limiting groove, and the limiting block cooperates with the limiting groove connect.

In some optional embodiments, the protection component further includes: a blocking member disposed in the receiving cavity, one end of the blocking member is connected to the first protective sleeve, and the other end is in contact with the first shielding body.

In some optional embodiments, the moving component includes: a slide rail, which is provided on the base, and the slide rail extends along the second direction; a pressure sensor, which is provided on the base and connected to the pusher; and the pusher is slidably provided on the slider. Rail; the first driving member is connected to the pushing member, and the first driving member can drive the pushing member to slide in the second direction to push the first syringe or the second syringe.

In some optional embodiments, the pushing component further includes: a slider, the slider is slidably arranged on the slide rail, and the slider is spaced apart from the pushing member, and the movable part is connected to the slider; a second driving member is connected to the slider. , the second driving member can drive the slider to slide in the second direction, so that the movable part communicates with the first syringe or the second syringe.

In some optional embodiments, it also includes: a moving plate, the moving plate is arranged on the base, and the moving plate can move in the first direction relative to the base, the first syringe and the second syringe are respectively connected to the moving plate; wires Mother, the screw mother is arranged on the movable plate and connected to the movable plate, the movable plate is provided with a screw mother, and the screw mother is fixed on the movable plate; screw, the screw is arranged on the base and connected to the screw mother, and the rotation of the screw drives the screw along the The first direction movement; the third driving member is connected to the screw, and the third driving member can drive the screw to rotate and drive the moving plate to move in the first direction through the screw nut.

In some optional embodiments, the moving plate is provided with a first clamping part, and the first clamping part can hold the first syringe; and/or, the moving plate is provided with a second clamping part, and the second clamping part Can hold a second syringe.

In some optional embodiments, it also includes: a hemostatic component, which is provided on the base. The hemostatic component includes a tourniquet and an air pump. The air pump is provided on the base, and the air pump is connected to the tourniquet.

In some optional embodiments, the pushing component includes a direct injection mode and a pellet injection mode; the pushing component is configured to push the first syringe and the second syringe to complete the injection work in the direct injection mode; the pushing component is configured to In the case of the bullet injection mode, the tourniquet is filled to stop bleeding, and the pushing component pushes the first syringe at the first frequency. After the tourniquet is released, the pushing component pushes the first syringe to complete the injection at the second frequency.

In some optional embodiments, the first frequency is that at the same peak injection speed and injection volume, a single pulse push volume is less than or equal to 0.1ml; the second frequency is that at the same peak injection speed and injection volume, a single pulse The push volume is greater than 1ml.

The embodiment of the second aspect of the present application also provides a working method of an injection device, including the following steps: connecting a first syringe with an injection needle, and pushing the first syringe through a pushing assembly to fill the first syringe with physiological saline. Injection needle; after venipuncture, connect the second syringe to the injection needle, and push the second syringe through the pushing assembly so that the radioactive drug in the second syringe enters the injection needle tube; connect the first syringe to the injection needle, and push the second syringe through the pushing assembly The first syringe is pushed, so that the physiological saline in the first syringe is injected into the subject through the injection needle in a direct injection mode or a pulse injection mode.

In some optional embodiments, the pulse injection mode specifically includes: using an air pump to expand the tourniquet to stop hemorrhage, pushing the first syringe at a first frequency by the pushing component, releasing the tourniquet after completing the predetermined volume bolus, and pushing the component to The second frequency pushes the first syringe, where the first frequency is when the same peak injection speed and injection volume, a single pulse push liquid volume is less than or equal to 0.1ml; the second frequency is when the same peak injection speed and injection volume, a single pulse The volume of fluid injected by the pulse body is greater than 1ml.

The radiopharmaceutical injection device provided in the embodiment of the present application is provided with a syringe assembly and a pushing assembly. The syringe assembly can move in a first direction relative to the base and alternately change the positions of the first syringe and the second syringe, thereby achieving the first The syringe is connected to the injection needle or the second syringe is connected to the injection needle. The pushing component can move in the second direction to push the first syringe and the second syringe. The appropriate injection mode can be selected according to the actual situation to achieve different injection methods. Meet the requirements of direct injection or bullet injection to ensure the injection effect of radioactive drugs. In addition, the above-mentioned radiopharmaceutical injection device can also reduce the operator's contact with the second syringe, injection needle, etc., thereby reducing the problem of the operator being exposed to radiation for a long time.

Description of the drawings

In order to explain the technical solutions of the embodiments of the present application more clearly, the drawings required to be used in the embodiments of the present application will be briefly introduced below. For those of ordinary skill in the art, without exerting creative efforts, they can also Additional drawings can be obtained from these drawings.

Figure 1 is a schematic structural diagram of a radiopharmaceutical injection device according to an embodiment of the present application;

Figure 2 is a schematic structural diagram of the syringe assembly of the radiopharmaceutical injection device in the first position according to the embodiment of the present application;

Figure 3 is a schematic structural diagram of the syringe assembly of the radiopharmaceutical injection device in the second position according to the embodiment of the present application;

Figure 4 is an exploded schematic diagram of the shielding component of the radiopharmaceutical injection device according to the embodiment of the present application;

Figure 5 is a schematic structural diagram of the shielding component of the radiopharmaceutical injection device according to the embodiment of the present application;

Figure 6 is a partial structural schematic diagram of the radiopharmaceutical injection device according to the embodiment of the present application;

Figure 7 is a cross-sectional view of the radiopharmaceutical injection device according to the embodiment of the present application;

Figure 8 is a schematic structural diagram of the hemostatic component of the radiopharmaceutical injection device according to the embodiment of the present application.

Explanation of reference symbols:

100. Radioactive drug injection device;

10. Base;

20. Injection needle; 21. Injection part; 22. Movable part;

30. Syringe assembly; 31. First syringe; 32. Second syringe;

40. Pushing component; 41. Slide rail; 42. Pushing member; 43. First driving member; 44. Pressure sensor; 45. Slider; 46. Second driving member;

50. Shielding component; 51. Housing; 52. First shielding body; 53. Second shielding body; 54. Elastic member; 55. Third shielding body;

60. Moving plate; 61. First clamping member; 62. Second clamping member;

70. Lead screw;

80. The third driving part;

90. Hemostatic component; 91. Tourniquet; 911. Shell; 912. Air bag; 913. Flexible cloth.

Detailed ways

Features and exemplary embodiments of various aspects of the application are described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the application. However, it will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of embodiments is merely intended to provide a better understanding of the present application by illustrating examples of the present application. In the drawings and the following description, at least some well-known structures and techniques are not shown to avoid unnecessarily obscuring the present application; and, the dimensions of some structures may be exaggerated for clarity. Furthermore, the features, structures, or characteristics described below may be combined in any suitable manner in one or more embodiments.

In the description of this application, it should be noted that, unless otherwise stated, "plurality" means more than two; the terms "upper", "lower", "left", "right", "inside", " The orientation or positional relationship indicated such as "outside" is only for the convenience of describing the present application and simplifying the description. It does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present application. Application restrictions. Furthermore, the terms "first," "second," etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The directional words appearing in the following description refer to the directions shown in the figures and do not limit the specific structures of the embodiments of the present application. In the description of this application, it should also be noted that, unless otherwise clearly stated and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection, or Connected integrally; either directly or indirectly. For those of ordinary skill in the art, the specific meanings of the above terms in this application may be understood based on specific circumstances.

In order to solve the existing technical problems, embodiments of the present application provide a radiopharmaceutical injection device and a working method of the injection device. In order to better understand the present application, the radiopharmaceutical injection device and the working method of the injection device according to the embodiment of the present application will be described in detail below with reference to FIGS. 1 to 8 .

The following first introduces the radiopharmaceutical injection device provided by the embodiment of the present application.

Please refer to Figures 1 and 2. Figure 1 is a schematic structural diagram of the radiopharmaceutical injection device according to an embodiment of the present application; Figure 2 is a schematic structural diagram of the syringe assembly of the radiopharmaceutical injection device according to an embodiment of the present application in the first position; Figure 3 is a schematic structural diagram of the radiopharmaceutical injection device according to an embodiment of the present application. A schematic structural view of the syringe assembly of the radiopharmaceutical injection device in the second position according to the embodiment of the present application; Figure 4 is an exploded schematic view of the shielding assembly of the radiopharmaceutical injection device in the embodiment of the present application.

As shown in Figures 1, 2, 3 and 4, the first embodiment of the present application provides a radiopharmaceutical injection device 100, which includes: a base 10; an injection needle 20 disposed on the base 10; and a syringe assembly 30 is disposed on the base 10, and the syringe assembly 30 can move in a first direction relative to the base 10. The syringe assembly 30 has a first position and a second position. The syringe assembly 30 includes a first syringe 31 and a second syringe 32. One syringe 31 is provided with physiological saline, and the second syringe 32 is provided with radioactive medicine; the pushing component 40 is arranged on the base, and the pushing component 40 can move in a second direction relative to the base 10, and the first direction is perpendicular to the second direction. , wherein, when the syringe assembly 30 is in the first position, the first syringe 31 is connected with the injection needle 20, and the pushing assembly 40 moves in the second direction and pushes the first syringe 31; when the syringe assembly 30 is in the second position, Next, the second syringe 32 communicates with the injection needle 20, and the pushing assembly 40 moves in the second direction and pushes the second syringe 32.

The base 10 serves as a base for installing components such as the injection needle 20, the syringe assembly 30, and the pushing assembly 40, and provides support for the injection needle 20, the syringe assembly 30, and the pushing assembly 40, and at least provides movement for the syringe assembly 30 and the pushing assembly 40. Space allows the syringe assembly 30 to move in a first direction relative to the base 10 and the pushing assembly 40 to move in a second direction relative to the base 10 . The shape, size, etc. of the above-mentioned base 10 can be set according to actual needs. For example, the shape of the base 10 can be selected from a rectangular structure, a trapezoidal structure, a cylindrical structure, and other structures.

The syringe assembly 30 is disposed on the base 10 and can move in a first direction relative to the base 10. The syringe assembly 30 includes a first syringe 31 and a second syringe 32. The first syringe 31 is filled with physiological saline. The two syringes 32 are equipped with radioactive drugs. When the syringe assembly 30 moves to the first position, the first syringe 31 is connected with the injection needle 20 , and the physiological saline in the first syringe 31 can be pushed into the injection needle 20 by pushing the first syringe 31 to discharge the inside of the injection needle 20 of bubbles. When the syringe assembly 30 moves to the second position, the second syringe 32 is connected with the injection needle 20 , and the radioactive drug in the second syringe 32 can be pushed into the injection needle 20 by pushing the second syringe 32 , so that the radioactive drug in the second syringe 32 can be injected through the injection needle 20 Radiopharmaceuticals are injected into the subject. The syringe assembly 30 can reciprocate along the first direction, so that the first syringe 31 and the second syringe 32 are alternately connected to the injection needle 20 .

The pushing component 40 can move in the second direction relative to the base 10 . The pushing component 40 is used to push the first syringe 31 and the second syringe 32 so that the physiological saline in the first syringe 31 or the radiopharmaceutical in the second syringe 32 Push in the injection needle 20.

In the embodiment of the present application, as shown in FIGS. 2 and 3 , when the syringe assembly 30 moves in the first direction and the first syringe 31 is close to the injection needle 20 , the first syringe 31 can be driven toward the injection needle 20 through the syringe assembly 30 The syringe assembly 30 moves in the first direction, so that the first syringe 31 is connected with the injection needle 20, and the syringe assembly 30 is in the first position; or, when the syringe assembly 30 moves in the first direction, and the first syringe 31 is close to the injection needle 20, the injection The needle 20 can move toward the first syringe 31 so that the first syringe 31 communicates with the injection needle 20. At this time, the syringe assembly 30 is in the first position. Similarly, when the syringe assembly 30 moves in the first direction and the second syringe 32 is close to the injection needle 20, the second syringe 32 can be driven by the syringe assembly 30 to move in the direction of the injection needle 20, so that the second syringe 32 and the injection needle 20 are aligned. 20 is connected, the syringe assembly 30 is in the second position at this time; or, when the syringe assembly 30 moves in the first direction and the second syringe 32 is close to the injection needle 20, the injection needle 20 can move in the direction of the second syringe 32, so that The second syringe 32 is connected to the injection needle 20, and the syringe assembly 30 is in the second position at this time.

Optionally, the pushing assembly 40 and the injection needle 20 are on the same straight line along the second direction.

Optionally, when the base 10 has a rectangular structure, the first direction is the X direction, which is the width direction of the base 10, and the second direction is the Y direction, which is the length direction of the base 10. The first direction and the first direction are the length direction of the base 10. Two directions are vertical.

In the radiopharmaceutical injection device 100 provided in the embodiment of the present application, by providing a syringe assembly 30 and a pushing assembly 40, the syringe assembly 30 can move in a first direction relative to the base 10, and alternately change the first syringe 31 and the second syringe 32. position, thereby achieving communication between the first syringe 31 and the injection needle 20 or the second syringe 32 and the injection needle 20, and the pushing assembly 40 can move in the second direction to push the first syringe 31 and the second syringe 32, which can be determined according to the actual situation. The appropriate injection mode of the push assembly 40 is selected according to the situation, thereby realizing different injection methods to meet the requirements of direct injection or projectile injection, and ensuring the injection effect of radiopharmaceuticals. In addition, the above-mentioned radiopharmaceutical injection device 100 can also reduce the operator's contact with the second syringe 32, the injection needle 20, etc., thereby reducing the problem of the operator being exposed to radiation for a long time.

In some optional embodiments, as shown in Figures 1 and 4, the injection needle 20 includes: the injection part 21 can be connected to the subject's vein; the movable part 22 is provided on the base 10, and the movable part 22 can be relative to the base 10 moves along the second direction, the movable part 22 is spaced apart from the pushing component 40, and the first syringe 31 or the second syringe 32 is disposed between the movable part 22 and the pushing component 40, wherein when the movable part 22 moves along the second direction , the movable part 22 can be communicated with the first syringe 31 or the second syringe 32 .

In the embodiment of the present application, the injection needle 20 includes an injection part 21 and a movable part 22. The injection part 21 can be connected to the vein of the subject, the movable part 22 can be connected with the first syringe 31 or the second syringe 32, and the movable part 22 can The movement in the second direction relative to the base 10 enables the movable portion 22 to be connected or disconnected from the first syringe 31 , or from the second syringe 32 .

For example, when the first syringe 31 and the second syringe 32 move synchronously along the first direction, and the first syringe 31 moves to align with the movable part 22, the movable part 22 moves toward the first syringe 31 along the second direction. , so that the first syringe 31 communicates with the movable part 22, the pushing assembly 40 moves in the second direction and pushes the first syringe 31, so that the physiological saline in the first syringe 31 is injected into the injection needle 20.

For example, when the first syringe 31 and the second syringe 32 move synchronously in the first direction, and the second syringe 32 moves to align with the movable part 22, the movable part 22 moves in the second direction toward the second syringe 32. , so that the second syringe 32 communicates with the movable part 22 , the pushing assembly 40 moves in the second direction and pushes the second syringe 32 , so that the radioactive medicine in the second syringe 32 is injected into the injection needle 20 .

In these optional embodiments, the arrangement is such that the first syringe 31 and the second syringe 32 can move in the first direction, the pushing assembly 40 and the movable part 22 can move in the second direction, and each component only moves in one direction, Simplifying the overall operation method of the above-mentioned device can also ensure the movement stability of each component to achieve precise operation, thereby ensuring the injection effect of radioactive drugs.

In some optional embodiments, as shown in Figures 1 and 4, a shielding component 50 is also included, which is disposed on the base 10. The shielding component 50 has a receiving space, and the second syringe 32 is disposed in the receiving space. The shielding component 50 can be connected with The second syringe 32 moves in the first direction relative to the base 10 .

In the embodiment of the present application, the shielding component 50 has a receiving space, and at least part of the second syringe 32 is disposed in the receiving space. It can be understood that the second syringe 32 is entirely embedded in the receiving space of the shielding component 50, and the receiving space is a non-enclosed space. At this time, the movable part 22 can extend into the receiving space to communicate with the second syringe 32 , and the pushing component 40 can extend into the receiving space and push the push handle of the second syringe 32 to move.

In the embodiment of the present application, the shielding component 50 may have an integrated structure or a separate structure.

In these optional embodiments, the shielding component 50 is configured to prevent radiation, and the pushing component 40 moves in the second direction and pushes the second syringe 32 to remove the radiopharmaceutical in the second syringe 32 During the process of injecting the injection needle 20, the shielding assembly 50 can play a protective role and further reduce the radiation received by the operator.

Referring to FIG. 5 , FIG. 5 is a schematic structural diagram of a shielding component of a radiopharmaceutical injection device according to an embodiment of the present application.

In some optional embodiments, as shown in Figures 4 and 5, the shielding assembly 50 includes: a housing 51, which is provided on the base 10; the housing 51 is provided with a receiving cavity; a first shielding body 52 and a second shielding body 52. Body 53, the first shielding body 52 and the second shielding body 53 are arranged in the accommodation cavity, one end of the second shielding body 53 is sleeved on the first shielding body 52, and the first shielding body 52 can move relative to the second shielding body 53 , both the first shielding body 52 and the second shielding body 53 are hollow structures, and the first shielding body 52 and the second shielding body 53 form a receiving space, wherein when the movable part 22 moves in the second direction, the movable part 22 drives The first shielding body 52 moves relative to the second shielding body 53 so that the second syringe 32 extends out of the first shielding body 52 and communicates with the movable part 22 .

In the embodiment of the present application, the shielding assembly 50 includes a housing 51 , a first shielding body 52 and a second shielding body 53 . The housing 51 is placed outside the first shield 52 and the second shield 53. One end of the housing 51 can be connected to the movable part 22. Both the first shield 52 and the second shield 53 are hollow structures, and the first shield The body 52 and the second shielding body 53 form a receiving space, the second syringe 32 is embedded in the receiving space, one end of the second shielding body 53 is sleeved on the first shielding body 52, and the first shielding body 52 can be shielded relative to the second shielding body 52. The movement of the body 53 can be understood as the expansion and contraction of the first shielding body 52 relative to the second shielding body 53. When the first shielding body 52 is in an extended state, the second syringe 32 is disposed in the first shielding body 52, and the second syringe 32 is not in the extended state. Communicated with the movable part 22; when the first shield 52 is in the retracted state, the second syringe 32 extends out of the first shield 52 and communicates with the movable part 22. The retracted state of the first shield 52 at this time is based on the movement of the first shield 52. The portion 22 presses the first shielding body 52 and moves toward the second shielding body 53 so that the first shielding body 52 is in a retracted state.

In these optional embodiments, the housing 51 is sleeved on the first shielding body 52 and the second shielding body 53 , and the second syringe 32 is disposed in the receiving space formed by the first shielding body 52 and the second shielding body 53 , when the syringe assembly 30 is in the first position, the first shield 52 is provided in the syringe sleeve of the radioactive drug of the second syringe 32 to effectively reduce the radiation of the radioactive drug. When the syringe assembly 30 is in the second position, the first shielding body 52 is in contact with the movable part 22, and the first shielding body 52 is retracted, and the second syringe 32 extends out of the first shielding body 52 and communicates with the movable part 22, pushing When the assembly 40 pushes the second syringe 32 so that the radioactive medicine in the second syringe 32 is injected into the injection needle 20 , the first shield 52 contacts the movable part 22 so that the second syringe 32 passes through the movable part 22 and the injection needle 20 A relatively connected space is formed therebetween, so that the radioactive drug can be injected into the injection needle 20 .

In some optional embodiments, the shielding assembly 50 further includes an elastic member 54 that is sleeved on the first shielding body 52 . One end of the elastic member 54 is connected to the first shielding body 52 and the other end is in contact with the second shielding body 53 .

Optionally, the elastic member 54 is selected from at least one of linear springs, torsion springs, elastic sheets, solid elastic rubber, porous elastic rubber, solid elastic plastic, porous elastic plastic, memory metal and magnetic components.

In these optional embodiments, the elastic member 54 provides thrust force to the first shielding body 52. When the first shielding body 52 is compressed by the movable part 22 and reaches the retracted state, the elastic member 54 is in contraction deformation under the external load. When the movable part 22 releases the pressure on the first shield 52, based on the rebound force (thrust force) of the elastic member 54 after contraction, the first shield 52 moves in a direction away from the second shield 53, so that the first shield 52 moves in a direction away from the second shield 53. 52 automatically returns to the uncompressed state, and the second syringe 32 is contained in the first shielding body 52 .

In some optional embodiments, the shielding assembly 50 further includes a third shielding body 55 connected to the second shielding body 53. The third shielding body 55 includes a connecting portion and an extension portion, and the connecting portion is connected to the second shielding body 53. The connection part is provided with a through hole, and the extension part is connected to the peripheral side of the through hole and extends in a direction away from the connection part. The needle barrel of the second syringe 32 is arranged in the receiving space, and the push handle penetrates through the through hole and is arranged in the extension part.

Optionally, the third shielding body 55 is threadedly connected to the second shielding body 53 . In this way, the third shielding body 55 and the second shielding body 53 are detachable, and the second syringe 32 is put into the third shielding body 55 and the second shielding body 53 and extends to the first shielding body 52 .

Optionally, the end of the push handle of the second syringe 32 is located on the third shielding body 55 .

In these alternative embodiments, this arrangement facilitates installation and removal of the second syringe 32 .

In some optional embodiments, the extension portion is provided with a through groove, the through groove extends along the second direction, and the pushing position of the second syringe 32 can be observed through the through groove.

In these optional embodiments, the pushing position of the second syringe 32 can be observed through the through slot, thereby determining the pushing status of the second syringe 32 and the remaining status of the radiopharmaceutical in the second syringe 32 .

In some optional embodiments, a scale is provided on the peripheral side of the through groove, and the scale is used to indicate the pushing distance of the second syringe 32 .

In these optional embodiments, by reading the corresponding scale position at the end of the second syringe 32 , the volume of the radiopharmaceutical in the second syringe 32 inside the shielding assembly 50 can be read without touching the second syringe 32 .

In some optional embodiments, the housing 51 is provided with a limiting groove, and the limiting groove is used to connect with the protection component.

In the embodiment of the present application, the protection component is connected to the housing 51 through a limiting groove. The protection component includes a slider 45 and is slidably connected to the limiting groove. The protective component may also include a convex block and snap-fitted with the limiting groove.

In these optional embodiments, the protective component can be placed on the housing 51 . Since the housing 51 is not completely closed, the protective component needs to be placed during transportation. Before injection, open the protective component, put the shielding component 50 containing the second syringe 32 into the radiopharmaceutical injection device 100 to complete the injection, and when the injection is completed, it needs to be taken out from the radiopharmaceutical injection device 100 and put back into the protective component to avoid radiation. Give way.

In some optional embodiments, the protection component includes a limiting block, a first protective sleeve and a second protective sleeve. The first protective sleeve and the second protective sleeve are detachably connected, and the first protective sleeve and the second protective sleeve are hollow. structure, and the first protective cover and the second protective cover form a receiving cavity, the shielding component 50 is arranged in the receiving cavity, the limiting block is arranged on the side of the first protective cover close to the limiting groove, and the limiting block and the limiting groove Match the connection.

In these optional embodiments, the limiting block is disposed on a side of the first protective sleeve close to the limiting groove for slidingly mating with the limiting groove, thereby guiding the shielding assembly 50 to be inserted into the first protective sleeve and limiting the shielding. The component 50 moves within the receiving cavity formed by the first protective sheath and the second protective sheath, thereby reducing frequent collisions between the shielding component 50 and the protective component and causing leakage of internal radiopharmaceuticals. In addition, when the shielding component 50 is disposed in the protection component, the first protective cover and the second protective cover can be separated, and the shielding component 50 can be taken out by holding the third shielding body 55 .

In some optional embodiments, the protection component further includes a blocking member disposed in the receiving cavity, one end of the blocking member is connected to the first protective sleeve, and the other end is in contact with the first shielding body 52 .

In these optional embodiments, the blocking member cooperates with the first shielding body 52 to block the open end of the first shielding body 52 to block radiation leakage, that is, the connection point between the first shielding body 52 and the movable part 22 . In addition, one end of the blocking component is connected to the first protective cover, and the other end is in contact with the first shielding body 52 , which can further restrict the movement of the shielding component 50 within the protection component.

Referring to FIGS. 6 to 7 , FIG. 6 is a partial structural diagram of the radiopharmaceutical injection device according to the embodiment of the present application; FIG. 7 is a cross-sectional view of the radiopharmaceutical injection device according to the embodiment of the present application.

In some optional embodiments, as shown in FIGS. 6 and 7 , the pushing assembly 40 includes: a slide rail 41 provided on the base 10 , the slide rail 41 extending along the second direction; and a pushing member 42 slidably provided on the slide rail 41 . The rail 41; the pressure sensor 44 is provided on the base 10 and is connected to the pushing member 42; the first driving member 43 is connected to the pushing member 42, and the first driving member 43 can drive the pushing member 42 to slide along the second direction to push First syringe 31 or second syringe 32.

In the embodiment of the present application, the pushing assembly 40 includes a sliding rail 41, a pushing member 42, a first driving member 43, and a pressure sensor 44. It is driven by the first driving member 43, so that the pushing member 42 moves along the second direction on the sliding rail 41. Movement, the pushing member 42 can approach or move away from the first syringe 31 or the second syringe 32 along the second direction, and the pressure sensor 44 can contact the push handle of the first syringe 31 or the second syringe 32 for detecting the injection during the injection process. to identify if a blockage condition has occurred.

For example, when the first syringe 31 and the second syringe 32 move synchronously along the first direction, and the first syringe 31 moves to align with the movable part 22, the movable part 22 moves toward the first syringe 31 along the second direction. , so that the first syringe 31 communicates with the movable part 22, the first driving member 43 drives the pushing member 42 to move in the second direction close to the first syringe 31, the pushing member 42 contacts the first syringe 31, and the first driving member 43 continues to work so that the pushing member 42 pushes the first syringe 31 so that the physiological saline in the first syringe 31 is injected into the injection needle 20 . After the physiological saline injection is completed, the movable part 22 moves away from the first syringe 31 in the second direction, the first syringe 31 is disconnected from the movable part 22, and the first driving member 43 drives the pushing member 42 away from the first syringe in the second direction. 31 direction movement.

For example, when the second syringe 32 and the second syringe 32 move synchronously along the first direction, and the second syringe 32 moves to align with the movable part 22 , the movable part 22 moves toward the second syringe 32 along the second direction. , so that the second syringe 32 communicates with the movable part 22, the first driving member 43 drives the pushing member 42 to move in the second direction close to the second syringe 32, the pushing member 42 contacts the second syringe 32, and the first driving member 43 continues to work so that the pushing member 42 pushes the second syringe 32 so that the radioactive medicine in the second syringe 32 is injected into the injection needle 20 . After the radiopharmaceutical injection is completed, the movable part 22 moves away from the second syringe 32 in the second direction, the second syringe 32 is disconnected from the movable part 22, and the first driving member 43 drives the pushing member 42 away from the second syringe in the second direction. 32 direction movement.

In some optional embodiments, the pushing assembly 40 further includes: a slider 45, which is slidably disposed on the slide rail 41, and is spaced apart from the pusher 42, and the movable part 22 is connected to the slider 45; The second driving member 46 is connected to the slide block 45. The second driving member 46 can drive the slide block 45 to slide in the second direction, so that the movable part 22 communicates with the first syringe 31 or the second syringe 32.

In these optional embodiments, the movable part 22 and the slider 45 share a slide rail 41, and both can move in the second direction, simplifying the overall structure of the device.

In other optional embodiments, as shown in FIG. 6 , a slide groove, a slide block 45 and a second driving member 46 are also included. The slide block 45 is slidably disposed in the slide groove, and the slide groove and the slide rail 41 are arranged along the second direction. Extended and spaced apart, so that the sliding block 45 and the pushing member 42 are spaced apart and on the same straight line, the second driving member 46 is connected to the sliding block 45, and the second driving member 46 can drive the sliding block 45 to slide in the second direction. The movable part 22 is connected with the first syringe 31 or the second syringe 32 .

In some optional embodiments, as shown in FIG. 6 , it also includes: a moving plate 60 disposed on the base 10 , and the moving plate 60 can move in the first direction relative to the base 10 , the first syringe 31 and the first syringe 31 . The two syringes 32 are respectively connected to the moving plate 60. The moving plate 60 is provided with a screw mother, which is fixed to the moving plate 60; the screw 70 is provided on the base 10 and connected to the screw mother. The screw 70 rotates to cause the screw to rotate. The nut moves in the first direction; the third driving member 80 is connected to the screw 70 , and the third driving member 80 can drive the screw 70 to rotate through the screw nut to drive the moving plate 60 to move in the first direction.

In these optional embodiments, the radiopharmaceutical injection device 100 further includes a moving plate 60, a screw nut, a screw 70 and a third driving member 80. The third driving member 80 drives the screw 70 to rotate through the screw nut to drive movement. The plate 60 reciprocates in the first direction.

In some optional embodiments, the moving plate 60 is provided with a first clamping part 61 , and the first clamping part 61 can clamp the first syringe 31 .

In some optional embodiments, the moving plate 60 is provided with a second clamping member 62 that can clamp the second syringe 32 .

Referring to FIG. 8 , FIG. 8 is a schematic structural diagram of the hemostatic component of the radiopharmaceutical injection device according to an embodiment of the present application.

In some optional embodiments, as shown in Figures 1 and 8, a hemostatic component 90 is also included, which is provided on the base 10. The hemostatic component 90 includes a tourniquet 91 and an air pump. The air pump is provided on the base 10. The air pump and the hemostasis are With 91 connections.

Optionally, the tourniquet 91 includes a shell 911, an air bag 912 and a flexible cloth 913, and the air pump is in communication with the air bag 912.

In the embodiment of the present application, the design methods of the tourniquet 91 include, but are not limited to, annular tourniquets, tied tourniquets, solid extrusion tourniquets, etc.

In these optional embodiments, by disposing the hemostatic component 90 and cooperating with the injection needle 20 , the syringe component 30 and the pushing component 40 , the bolus injection effect is better. The pressure of the tourniquet 91 on the squeezing position can be adjusted through the air pump and the air pressure sensor to achieve precise control of the hemostatic force. In addition, the setting of the hemostatic component 90 enables the radiopharmaceutical injection device 100 to have an automatic hemostatic function. Due to the application of the automatic hemostatic component 90, the radiopharmaceutical will stay near the tourniquet 91 after the injection is completed. With the release of the tourniquet 91, Due to the effect of intravenous pressure, radiopharmaceuticals will quickly enter the body along with the blood flow and the auxiliary injection of normal saline. With the automation of this method, the effect of bolus injection can be further improved while avoiding the risk of failure.

In some alternative embodiments, the push assembly 40 includes a direct injection mode and a bolus injection mode. The pushing assembly 40 is configured to push the first syringe 31 and the second syringe 32 to complete the injection work in the direct injection mode. When the pushing component 40 is configured in the bullet injection mode, the tourniquet 91 is filled to stop bleeding, and the pushing component 40 pushes the first syringe 31 at the first frequency. After the tourniquet 91 is released, the pushing component 40 pushes the first syringe 31 at the first frequency. The second frequency 32 completes the injection work.

Illustratively, in the direct injection mode, the first syringe 31 is in communication with the injection needle 20, and the pushing assembly 40 is configured to push the first syringe 31 at a constant and relatively low pushing speed, so that the first syringe 31 is The physiological saline fills the injection needle 20; then the second syringe 32 is connected to the injection needle 20, and the pushing assembly 40 is configured to push the second syringe 32 at a constant and relatively low pushing speed, so that the second syringe 32 The radiopharmaceutical enters the injection needle 20; then the first syringe 31 is connected to the injection needle 20, and the pushing assembly 40 is configured to push the first syringe 31 at a constant and relatively low pushing speed, so that the first syringe 31 The radioactive drug in the physiological saline bolus injection needle 20 is injected into the subject.

Exemplarily, in the pulse injection mode, the first syringe 31 is in communication with the injection needle 20, and the pushing assembly 40 is configured to push the first syringe 31 at a constant and relatively low pushing speed, so that the first syringe 31 Physiological saline fills the injection needle 20; then the second syringe 32 is connected to the injection needle 20, and the pushing assembly 40 is configured to push the second syringe 32 at a constant and relatively low pushing speed, so that the radioactivity in the second syringe 32 The medicine enters the injection needle 20; then the first syringe 31 is connected to the injection needle 20. At this time, the air pump pressurizes the tourniquet 91 to achieve hemostasis, and the pushing component 40 is configured to push the first syringe 31 at a first frequency. , that is, the single pulse push volume is a pulse volume of less than 0.1ml for injection; when the flushing volume is reached (usually the total volume of the first frequency maintenance volume does not exceed 1.5ml), the tourniquet 91 automatically releases the pressure, and the push component 40 is configured In order to push the first syringe 31 at the second frequency, that is, the single pulse injection volume is a pulse volume of more than 1 ml and the injection is performed until the injection is completed.

In some optional embodiments, the first frequency is that at the same peak injection speed and injection volume, the volume of a single pulse push is less than or equal to 0.1 ml. The second frequency is when the volume of a single pulse push is greater than 1 ml at the same peak injection speed and injection volume.

In the embodiment of the present application, the inventor found through research on the first frequency and the second frequency in the pulse injection mode that a peristaltic pump was used to provide hemodynamic force and a simulated bionic arm was used to conduct an in vitro pellet injection simulation experiment. When injecting the same total amount of normal saline, a larger volume of normal saline pellet helps to improve the injection efficiency, and a smaller volume of normal saline pellet helps to reduce the effective flushing fluid volume, for example, the volume of a single pulse bolus is 80 microliters. The pulse liquid pill only requires 1.46ml of normal saline to completely clear the endothelium in the pipeline, and the liquid consumption is 49% less than that of non-pulse injection. The use of small liquid pills for flushing in the hemostatic state can reduce the risk of damage to the veins. Therefore, using the first frequency to push the first syringe 31 can be understood as a high-frequency small-volume pulse injection, which can reduce the amount of physiological saline liquid flushed in the pipeline; using the second frequency to push the first syringe 31 can be understood as a low-frequency large-volume pulse. Type injection can improve injection efficiency. The combination of tourniquet can improve the pellet aggregation of radiopharmaceutical pellet injection, thereby improving the pellet injection effect.

Optionally, in the pulse injection mode, the controller controls the hemostatic component 90 and the pushing component 40 to be in a precise matching state. Such a setting can ensure the consistency of injection and further improve the effect of projectile injection.

The embodiment of the second aspect of the present application also provides a working method of the injection device, including the following steps:

Connect the first syringe 31 to the injection needle 20, and push the first syringe 31 through the pushing assembly 40, so that the physiological saline in the first syringe 31 fills the injection needle 20;

After venipuncture, connect the second syringe 32 to the injection needle 20, and push the second syringe 32 through the pushing assembly 40, so that the radiopharmaceutical in the second syringe 32 enters the injection needle 20;

The first syringe 31 is connected to the injection needle 20, and the first syringe 31 is pushed by the pushing assembly 40, so that the physiological saline in the first syringe 31 is injected into the subject through the injection needle 20 in a direct injection mode or a pulse injection mode.

The working method of the injection device of the present application is to first fill the injection needle 20 with physiological saline to eliminate the gas in the injection needle 20. After completing the venipuncture, the radioactive drug is injected into the injection needle 20, and then the direct injection mode or In the pulse injection mode, the subject is injected through the injection needle 20 . The working method of the injection device of the present application can provide doctors with the ability to select an appropriate injection mode according to the actual situation to meet the requirements of direct injection or pellet injection to ensure the injection effect of radioactive drugs. In addition, it can also reduce the operator's contact with radiopharmaceuticals, thereby reducing the problem of operators being exposed to radiation for a long time.

In the embodiment of the present application, in the direct injection mode, the physiological saline in the first syringe 31 and the radionuclide in the second syringe 32 will be injected into the subject at a constant and slow speed.

In the embodiment of the present application, the pulse injection mode specifically includes: using an air pump to expand the tourniquet 91 to stop bleeding, the pushing assembly 40 pushing the first syringe 31 at a first frequency, and after completing the predetermined volume injection, releasing the tourniquet 91, The pushing component 40 pushes the first syringe 31 at a second frequency, where the first frequency is when the same peak injection speed and injection volume are used, and the single pulse push volume is less than or equal to 0.1ml; the second frequency is when the same peak injection speed and injection volume are When injecting volume, the volume of a single pulse push is greater than 1ml.

In the embodiment of the present application, the radioactive drug is first injected into the injection needle. In the hemostatic state, the first frequency of bolus injection of physiological saline is used to complete the low-volume injection needle flushing. After the tourniquet is released, the second frequency is used to flush the injection needle. Frequent bolus injection of normal saline assists the efficient entry of radiopharmaceuticals into the human body. This method can improve the pellet aggregation of radiopharmaceutical pellet injection, thereby improving the pellet injection effect.

Other structures and operations of the radiopharmaceutical injection device according to the embodiments of the present application are known to those of ordinary skill in the art and will not be described in detail here. In the description of this specification, reference is made to the terms "one embodiment", " Descriptions of "some embodiments", "exemplarily", "in the embodiments of the present application", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. middle. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While the present application has been described with reference to preferred embodiments, various modifications may be made and equivalents may be substituted for components thereof without departing from the scope of the application. In particular, as long as there is no structural conflict, the technical features mentioned in the various embodiments can be combined in any way. The application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims (12)

1. A radiopharmaceutical injection device, characterized in that it includes: base; An injection needle is provided on the base, the injection needle includes an injection part and a movable part, the injection part can be connected to the vein of the recipient, and the movable part is provided on the base; A syringe assembly is provided on the base, and the syringe assembly is movable in a first direction relative to the base, the syringe assembly has a first position and a second position, the syringe assembly includes a first syringe and a a second syringe, the first syringe is provided with physiological saline, and the second syringe is provided with radioactive medicine; A pushing component is provided on the base. The pushing component can move in a second direction relative to the base. The first direction is perpendicular to the second direction. The movable part can move relative to the base. The seat moves along the second direction, the movable part is spaced apart from the pushing component, and the first syringe or the second syringe is disposed between the movable part and the pushing component. When the part moves in the second direction, the movable part can communicate with the first syringe or the second syringe. The pushing component includes a slide rail, a pushing part, a pressure sensor, a first driving part, and a slide block. and a second driving member, the slide rail is provided on the base, the slide rail extends along the second direction, the pushing member is slidably provided on the slide rail, and the pressure sensor is provided on the base, And connected to the pushing member, the first driving member is connected to the pushing member, the first driving member can drive the pushing member to slide in the second direction to push the first syringe or the third Two syringes, the slide block is slidably arranged on the slide rail, and the slide block is spaced apart from the pushing member, the movable part is connected to the slide block, and the second driving member is connected to the slide block. block, the second driving member can drive the slide block to slide in the second direction so that the movable part communicates with the first syringe or the second syringe, wherein the syringe assembly is located at the first When the first syringe is in the second position, the first syringe is connected to the injection needle, and the pushing assembly moves in the second direction and pushes the first syringe. When the syringe assembly is in the second position, the third Two syringes are connected to the injection needle, and the pushing component moves in the second direction and pushes the second syringe; A hemostatic component, which is provided on the base. The hemostatic component includes a tourniquet and an air pump. The air pump is provided on the base, and the air pump is connected to the tourniquet; Wherein, the pushing component includes a direct injection mode and a projectile injection mode, and the pushing component is configured to push the first syringe and the second syringe to complete the injection work in the direct injection mode; The pushing component is configured so that when the tourniquet is inflated to stop bleeding in the pellet injection mode, the pushing component pushes the first syringe at a first frequency. After the tourniquet is released, the pushing component The component pushes the first syringe to complete the injection work at a second frequency. The first frequency is that at the same peak injection speed and injection volume, a single pulse push volume is less than or equal to 0.1ml. The second frequency is at the same peak injection speed and injection volume. At the peak injection speed and injection volume, the volume of a single pulse push is greater than 1 ml. 2. The radiopharmaceutical injection device according to claim 1, further comprising: A shielding component is provided on the base. The shielding component has a receiving space. The second syringe is provided on the receiving space. The shielding component can be aligned with the second syringe along a first edge relative to the base. direction movement. 3. The radiopharmaceutical injection device according to claim 2, wherein the shielding component includes: A housing is provided on the base, and the housing is provided with a receiving cavity; A first shielding body and a second shielding body, the first shielding body and the second shielding body are arranged in the accommodation cavity, one end of the second shielding body is sleeved on the first shielding body, and The first shielding body can move relative to the second shielding body, both the first shielding body and the second shielding body are hollow structures, and the first shielding body and the second shielding body form a Describing the containment space, Wherein, when the movable part moves in the second direction, the movable part drives the first shielding body to move relative to the second shielding body, so that the second syringe extends out of the first shielding body. And connected with the activity part. 4. The radiopharmaceutical injection device according to claim 3, wherein the shielding component further includes: An elastic member is sleeved on the first shielding body. One end of the elastic member is connected to the first shielding body, and the other end is in contact with the second shielding body. 5. The radiopharmaceutical injection device according to claim 3, wherein the shielding component further includes: A third shielding body is connected to the second shielding body. The third shielding body includes a connecting part and an extension part. The connecting part is connected to the second shielding body. The connecting part is provided with a through hole. The extension part is connected to the peripheral side of the through hole and extends in a direction away from the connecting part. The needle barrel of the second syringe is disposed in the receiving space, and the push handle penetrates the through hole and is disposed in the receiving space. within the extension. 6. The radiopharmaceutical injection device according to claim 5, characterized in that, The extension part is provided with a through groove, the through groove extends along the second direction, and the pushing position of the second syringe can be observed through the through groove. 7. The radiopharmaceutical injection device according to claim 6, characterized in that, A scale is provided on the peripheral side of the through groove, and the scale is used to indicate the pushing distance of the second syringe. 8. The radiopharmaceutical injection device according to claim 3, characterized in that, The housing is provided with a limiting slot, and the limiting slot is used to connect with the protection component. 9. The radiopharmaceutical injection device according to claim 8, characterized in that, The protection component includes a limiting block, a first protective cover and a second protective cover. The first protective cover and the second protective cover are detachably connected. The first protective cover and the second protective cover are It has a hollow structure, and the first protective sheath and the second protective sheath form a receiving cavity, the shielding component is arranged in the receiving cavity, and the limiting block is arranged on the first protective sleeve close to the limiting position. One side of the groove, and the limiting block is cooperatively connected with the limiting groove. 10. The radiopharmaceutical injection device according to claim 9, wherein the protection component further includes: A blocking member is disposed in the receiving cavity, one end of the blocking member is connected to the first protective sleeve, and the other end is in contact with the first shielding body. 11. The radiopharmaceutical injection device according to claim 1, further comprising: A moving plate, the moving plate is arranged on the base, and the moving plate can move in a first direction relative to the base, the first syringe and the second syringe are respectively connected to the moving plate , the moving plate is provided with a thread nut, and the thread nut is fixed to the moving plate; Lead screw, the lead screw is arranged on the base and connected to the nut, and the rotation of the lead screw causes the nut to move in the first direction; A third driving member is connected to the screw. The third driving member can drive the screw to rotate and pass through the screw nut to drive the moving plate to move in the first direction. 12. The radiopharmaceutical injection device according to claim 11, characterized in that, The moving plate is provided with a first clamping member, and the first clamping member can clamp the first syringe; and/or, The moving plate is provided with a second clamping part, and the second clamping part can clamp the second syringe.