CN113908423A - Nuclear medicine branch of academic or vocational study radiopharmaceutical is with stable quantitative injection device - Google Patents

Abstract

The invention discloses a stable quantitative injection device for nuclear medicine radioactive drugs, which comprises a drug amount control chamber, a mixing and stirring chamber, an injection needle tube, a driving screw rod, a conveying pump, a drug amount setting module and a stirring cavity, wherein the drug amount control chamber is arranged on the side edge of the mixing and stirring chamber, a control interface is arranged on the other side surface of the drug amount control chamber, and a display interface is arranged on the adjacent side of the control interface. The staff can conveniently obtain the information of the injection amount of the medicament.

Description

Nuclear medicine branch of academic or vocational study radiopharmaceutical is with stable quantitative injection device

Technical Field

The invention belongs to the technical field of medical instruments, and particularly relates to a stable quantitative injection device for a radiopharmaceutical in nuclear medicine.

Background

The nuclear medicine department, which utilizes the nuclear science technology and means to diagnose and treat diseases, is one of the main means of modern medicine. The nuclear medicine department is one of the main medical technical departments of the hospital, mainly develops nuclear medicine examination items, and is one of effective means for assisting the clinical departments in making correct diagnosis on diseases. The diagnostic radiopharmaceutical is labeled with a radionuclide having a moderate decay in Y radiant energy with a short half-life, and the therapeutic radiopharmaceutical is labeled with an emission energy having a higher radiant energy. Or an orally-irradiated radionuclide label; can be divided into two categories; one is that the main component of the medicine, the wood body, is radioactive isotope; another class is the radioisotope-labeled drugs, whose tracer action is through the metabolic process of the labeled itself. These radiopharmaceuticals should have a certain chemical stability and selectively accumulate at the organ or treatment site to be examined. Almost all organs or systems can be heard in vivo, and can be diagnosed by radioactive drugs, and the radioactive drugs for biochemical reaction in vivo research at the protection level L are mainly used for treating bone cancer, thyroid cancer, liver cancer, colon cancer and the like. Since the radiopharmaceutical is directly introduced into the body, its quality must meet the requirements of pharmacopoeia and national regulations.

In the course of nuclear medicine treatment, where it is necessary to inject a patient with a radiopharmaceutical and therefore a corresponding injection device is involved, the following problems are now posed for the majority of injection devices currently on the market:

1. most injection modes in the market at present generally inject the radioactive drugs into a patient body in a manual injection mode, but the dosage of the drugs cannot be accurately controlled in the drug injection process, so that subsequent treatment is influenced;

2. in the process of injecting the radioactive medicament, the traditional injection device has the problem of long injection time, and even the shaking of an injection needle can cause secondary injury to a patient;

3. the existing injection device has single function and generally only has the injection function, but different medicaments are required to be mixed for preparing the radioactive drugs before medicament injection, and the technical requirement cannot be met by the traditional injection device.

Disclosure of Invention

The technical problem to be solved by the invention is to overcome the existing defects and provide a stable quantitative injection device for nuclear medicine radiopharmaceuticals, so as to solve the problem that the traditional injection device provided in the background technology cannot accurately control the dosage of the medicament.

In order to achieve the purpose, the invention provides the following technical scheme: a stable quantitative injection device for radioactive drugs in nuclear medicine department comprises a drug amount control chamber, a mixing and stirring chamber, an injection needle tube, a driving screw rod, a conveying pump machine, a drug amount setting module and a stirring chamber, wherein the drug amount control chamber is arranged on the side edge of the mixing and stirring chamber, a control interface is arranged on the other side surface of the drug amount control chamber, a display interface is arranged on the adjacent side of the control interface, an injection tube is connected to the outer side of the drug amount control chamber, the other end of the injection tube is arranged in the mixing and stirring chamber, the conveying pump machine is arranged on both sides of the inner part of the drug amount control chamber, a controller is arranged at the lower end of the conveying pump machine, a connecting tube is connected to one side of the conveying pump machine, a conveying hose is connected to the upper end of the conveying pump machine, the other end of the conveying hose is arranged on the side edge of the injection needle tube, a monitor is arranged in the middle of the conveying hose, and the output end of the control interface is connected with the input end of the drug amount setting module, the utility model discloses a syringe, including the medicine volume, the input of syringe needle pipe, medicine volume setting module, the inside medicine volume monitoring module and the controller module of being provided with of medicine volume setting module, the output of controller module and the input interconnect of controller, the output of controller and the input interconnect of conveyer pump machine, the output of conveyer pump machine and the input interconnect of injection needle pipe, the output of medicine volume monitoring module and the input interconnect of watch-dog, the output of watch-dog and the input interconnect of display interface.

Preferably, the upper surface of the dose control chamber is fixedly connected with a fixed vertical plate, the upper end and the lower end of one side of the fixed vertical plate are fixedly connected with transverse plates, and a driving screw rod is arranged between the two transverse plates.

Preferably, the upper end of the driving screw rod is provided with a servo motor, and the servo motor is arranged inside the transverse plate.

Preferably, the surface of the driving screw rod is in threaded connection with two rotating rings, a lifting ring is arranged between the two rotating rings, the outer side of the lifting ring is fixedly connected to the side edge of the lifting plate, the inner side of the lifting ring is fixedly connected with two movable sliding blocks, the inner sides of the movable sliding blocks are slidably connected to the side edge of the fixed vertical plate, and the outer surface of the lifting plate is fixedly connected with an injection needle tube.

Preferably, a piston mechanism penetrates through the interior of the injection needle tube, a hydraulic lifting motor is arranged at the upper end of the piston mechanism, and connecting bearings penetrate through the upper end and the lower end of the piston mechanism.

Preferably, the inside bottom of mixing agitator chamber is provided with the stirring chamber, the stirring chamber upper end is provided with two medicament storage chamber, be provided with solenoid valve in the middle of medicament storage chamber and the stirring chamber.

Preferably, a refrigeration storage device is arranged between the two medicament storage cavities, and a temperature sensor is arranged on the outer side surface of each medicament storage cavity.

Preferably, the inside axis of rotation that is provided with of stirring intracavity portion, the axis of rotation upper end is provided with driving motor, the rotatory outrigger of fixedly connected with in the middle of the axis of rotation, rotatory outrigger surface both sides all are provided with the (mixing) shaft, the (mixing) shaft surface is provided with a plurality of stirring leaves.

Preferably, the outer side surface of the drug amount control chamber is provided with a liquid surface meter.

Preferably, an injection needle is arranged at the lower end of the injection needle tube, and the injection needle is a disposable needle.

Compared with the prior art, the invention provides a stable quantitative injection device for nuclear medicine radiopharmaceuticals, which has the following beneficial effects:

1. according to the invention, through the arranged dose setting module, before the injection of the radioactive drug, the dose to be injected is set in advance on the control interface, and then the conveying pump machine is controlled through the controller in the running process of the conveying pump machine, so that the dose extracted during each injection is controlled, and by the mode, on one hand, the precise control on the injection dose of the radioactive drug can be realized, on the other hand, the injection dose of the radioactive drug can be directly displayed on the display interface in an information form, so that a worker can conveniently obtain the information of the injection dose of the radioactive drug;

2. according to the invention, through the arranged driving screw rod, when the radiopharmaceutical is injected, the driving screw rod can be rotated under the action of the servo motor at the upper end of the driving screw rod, and then the rotating ring can be rotated and moved up and down through the thread structure between the driving screw rod and the rotating ring, so that the height adjustment of the lifting ring is realized, the height position of the injection needle tube can be adjusted through the way, and in the radiopharmaceutical injection process, the needle head at the lower end of the injection needle tube is penetrated into the injection position of a patient in the way, so that the risk of radiopharmaceutical injection is reduced;

3. according to the invention, through the arranged hydraulic lifting motor, after the injection needle is penetrated into the injection position of a patient, the piston mechanism can move up and down in the injection needle pipe through the operation of the hydraulic lifting motor, so that the radioactive drug in the injection needle pipe can be injected into the patient, and in the moving process of the piston mechanism, the connecting bearings at the two ends of the piston mechanism can reduce the shaking of the piston mechanism, thereby increasing the stability of the injection needle pipe;

4. according to the invention, through the arranged refrigeration storage equipment, the temperature in the medicament storage cavity can be reduced to the standard of the storage temperature of the radiopharmaceuticals under the action of the refrigeration storage equipment, when the radiopharmaceuticals are required to be prepared, the opening at the lower end of the medicament storage cavity is opened through the electromagnetic valve, so that the medicaments in the medicament storage cavity are discharged into the stirring cavity, then the rotating shaft is rotated under the action of the driving motor, and in the rotating process of the rotating shaft, the rotating outer frame can drive the two stirring shafts to rotate, so that the radiopharmaceuticals in the stirring cavity can be stirred;

5. through the delivery pump machine that sets up, after the radiopharmaceutical is prepared, under the delivery pump machine effect, can be intraductal with stirring intracavity radiopharmaceutical suction to do not need the manual work to inject into the syringe needle with radiopharmaceutical, it is comparatively convenient.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention without limiting the invention in which:

FIG. 1 is a schematic view of a stable quantitative injection device for nuclear medicine radiopharmaceuticals according to the present invention;

FIG. 2 is a schematic view of a syringe tube for stable quantitative injection of nuclear medicine according to the present invention;

FIG. 3 is a schematic view of a connecting bearing of the stable quantitative injection device for nuclear medicine radiopharmaceutical of the present invention;

FIG. 4 is a side view of a stationary riser of the stable quantitative injection device for nuclear medicine radiopharmaceutical of the present invention;

FIG. 5 is a cross-sectional view of a mixing chamber of a stable quantity injection apparatus for nuclear medicine radiopharmaceuticals in accordance with the present invention;

FIG. 6 is a sectional view of a dose control chamber of the stable quantitative injection device for nuclear medicine in accordance with the present invention;

FIG. 7 is an enlarged view of A of FIG. 4 of the stable quantity injection device for nuclear medicine radiopharmaceutical of the present invention;

FIG. 8 is a system block diagram of a dose setting module of the stable quantitative injection device for nuclear medicine in accordance with the present invention;

in the figure: 1. a dose control chamber; 2. a mixing and stirring chamber; 3. injecting a needle tube; 4. a hydraulic lifting motor; 5. a piston mechanism; 6. connecting a bearing; 7. an injection needle; 8. a delivery hose; 9. an injection pipe; 10. a control interface; 11. displaying an interface; 12. a liquid level meter; 13. fixing the vertical plate; 14. a transverse plate; 15. driving the screw rod; 16. a servo motor; 17. a rotating ring; 18. a lifting ring; 19. a lifting plate; 20. a movable slide block; 21. a medicament reservoir chamber; 22. a refrigeration storage device; 23. an electromagnetic valve; 24. a temperature sensor; 25. a rotating shaft; 26. a drive motor; 27. rotating the outer frame; 28. a stirring shaft; 29. stirring blades; 30. a controller; 31. a monitor; 32. a delivery pump machine; 33. a connecting pipe; 34. a dose setting module; 35. a drug amount monitoring module; 36. a controller module; 37. a stirring chamber.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-8, the present invention provides the following technical solutions: a stable quantitative injection device for radioactive drugs in nuclear medicine department comprises a drug amount control chamber 1, a mixing and stirring chamber 2, an injection needle tube 3, a driving screw rod 15, a delivery pump machine 32, a drug amount setting module 34 and a stirring cavity 37, wherein the drug amount control chamber 1 is arranged on the side edge of the mixing and stirring chamber 2, a control interface 10 is arranged on the other side surface of the drug amount control chamber 1, a display interface 11 is arranged on the adjacent side of the control interface 10, an injection tube 9 is connected with the outer side of the drug amount control chamber 1, the other end of the injection tube 9 is arranged in the mixing and stirring chamber 2, the delivery pump machines 32 are arranged on the two sides in the drug amount control chamber 1, a controller 30 is arranged at the lower end of the delivery pump machine 32, a connecting tube 33 is connected with one side of the delivery pump machine 32, a delivery hose 8 is connected with the upper end of the delivery pump machine 32, the other end of the delivery hose 8 is arranged on the side edge of the injection needle tube 3, and a monitor 31 is arranged in the middle of the delivery hose 8, the output end of the control interface 10 is connected with the input end of the medicine amount setting module 34, a medicine amount monitoring module 35 and a controller module 36 are arranged in the medicine amount setting module 34, the output end of the controller module 36 is connected with the input end of the controller 30, the output end of the controller 30 is connected with the input end of the conveying pump machine 32, the output end of the conveying pump machine 32 is connected with the input end of the injection needle tube 3, the output end of the medicine amount monitoring module 35 is connected with the input end of the monitor 31, and the output end of the monitor 31 is connected with the input end of the display interface 11.

In the invention, preferably, a fixed vertical plate 13 is fixedly connected to the upper surface of a drug amount control chamber 1, transverse plates 14 are fixedly connected to the upper end and the lower end of one side of the fixed vertical plate 13, a driving screw rod 15 is arranged between the two transverse plates 14, a servo motor 16 is arranged at the upper end of the driving screw rod 15, the servo motor 16 is arranged inside the transverse plates 14, two rotating rings 17 are in threaded connection with the surface of the driving screw rod 15, a lifting ring 18 is arranged between the two rotating rings 17, the outer side of the lifting ring 18 is fixedly connected to the side edge of a lifting plate 19, two movable sliders 20 are fixedly connected to the inner side of the lifting ring 18, the inner side of each movable slider 20 is slidably connected to the side edge of the fixed vertical plate 13, and an injection needle tube 3 is fixedly connected to the outer surface of the lifting plate 19.

In the invention, preferably, a piston mechanism 5 is arranged in the injection needle tube 3 in a penetrating manner, a hydraulic lifting motor 4 is arranged at the upper end of the piston mechanism 5, connecting bearings 6 are arranged at the upper end and the lower end of the piston mechanism 5 in a penetrating manner, a stirring cavity 37 is arranged at the bottom end in the mixing and stirring chamber 2, two medicament storage cavities 21 are arranged at the upper end of the stirring cavity 37, and an electromagnetic valve 23 is arranged between the medicament storage cavities 21 and the stirring cavity 37.

In the present invention, preferably, a refrigeration storage device 22 is disposed between the two medicament storage cavities 21, a temperature sensor 24 is disposed on the outer side surface of each medicament storage cavity 21, a rotating shaft 25 is disposed inside each stirring cavity 37, a driving motor 26 is disposed at the upper end of the rotating shaft 25, a rotating outer frame 27 is fixedly connected to the middle of the rotating shaft 25, stirring shafts 28 are disposed on both sides of the surface of the rotating outer frame 27, a plurality of stirring blades 29 are disposed on the surface of each stirring shaft 28, a liquid level surface 12 is disposed on the outer side surface of the medicament control chamber 1, an injection needle 7 is disposed at the lower end of the injection needle 3, and the injection needle 7 is a disposable needle.

The working principle and the using process of the invention are as follows: when the radioactive drug preparation device is used, the radioactive drug to be prepared is filled into the drug storage cavity 21 before the radioactive drug is injected, the temperature in the drug storage cavity 21 can be reduced to the standard of the storage temperature of the radioactive drug under the action of the refrigeration storage equipment 22, when the radioactive drug is prepared, the lower end opening of the drug storage cavity 21 is opened through the electromagnetic valve 23, so that the drug in the drug storage cavity 21 is discharged into the stirring cavity 37, then the rotating shaft 25 is rotated under the action of the driving motor 26, the rotating outer frame 27 can drive the two stirring shafts 28 to rotate in the rotating process of the rotating shaft 25, the stirring of the radioactive drug in the stirring cavity 37 is realized, after the radioactive drug is prepared, the radioactive drug in the stirring cavity 37 can be pumped into the injection needle tube 3 under the action of the conveying pump 32, so that the radioactive drug does not need to be manually injected into the injection needle tube 3, and the radioactive drug preparation device is convenient, before the injection of the radioactive drug, the dosage of the drug to be injected is set in advance on the control interface 10, then the delivery pump 32 is controlled by the controller 30 in the operation process of the delivery pump 32, so that the dosage of the drug extracted in each injection is controlled, on one hand, the injection dosage of the radioactive drug can be accurately controlled, on the other hand, the injection dosage of the radioactive drug can be directly displayed on the display interface 11 in an information form, so that a worker can conveniently obtain the information of the injection dosage of the drug, a patient places an arm on the upper surface of the drug dosage control chamber 1, aligns the injection position of the arm with the injection needle tube 3, on the other hand, the driving screw rod 15 can be rotated under the action of the servo motor 16 at the upper end of the driving screw rod 15 during the injection of the radioactive drug, and then the rotating ring 17 can be rotated and moved up and down through the thread structure between the driving screw rod 15 and the rotating ring 17, therefore, the height of the lifting ring 18 can be adjusted, the height position of the injection needle tube 3 can be adjusted in such a way, in the radioactive drug injection process, the needle head at the lower end of the injection needle tube 3 is penetrated into the injection position of a patient in such a way, the risk of radioactive drug injection is reduced, after the injection needle head 7 is penetrated into the injection position of the patient, the piston mechanism 5 can move up and down in the injection needle tube 3 through the operation of the hydraulic lifting motor 4, the radioactive drug in the injection needle tube 3 can be injected into the patient, after the radioactive drug injection is finished, the injection needle tube 3 is reset in the same way, and the patient can move the arm away.

The first embodiment is as follows:

a stable quantitative injection device for radioactive drugs in nuclear medicine department comprises a drug amount control chamber 1, a mixing and stirring chamber 2, an injection needle tube 3, a driving screw rod 15, a delivery pump machine 32, a drug amount setting module 34 and a stirring cavity 37, wherein the drug amount control chamber 1 is arranged on the side edge of the mixing and stirring chamber 2, a control interface 10 is arranged on the other side surface of the drug amount control chamber 1, a display interface 11 is arranged on the adjacent side of the control interface 10, an injection tube 9 is connected with the outer side of the drug amount control chamber 1, the other end of the injection tube 9 is arranged in the mixing and stirring chamber 2, the delivery pump machines 32 are arranged on the two sides in the drug amount control chamber 1, a controller 30 is arranged at the lower end of the delivery pump machine 32, a connecting tube 33 is connected with one side of the delivery pump machine 32, a delivery hose 8 is connected with the upper end of the delivery pump machine 32, the other end of the delivery hose 8 is arranged on the side edge of the injection needle tube 3, and a monitor 31 is arranged in the middle of the delivery hose 8, the output end of the control interface 10 is connected with the input end of the dosage setting module 34, the dosage setting module 34 is internally provided with a dosage monitoring module 35 and a controller module 36, the output end of the controller module 36 is connected with the input end of the controller 30, the output end of the controller 30 is connected with the input end of the delivery pump 32, the output end of the delivery pump 32 is connected with the input end of the injection needle tube 3, the output end of the dosage monitoring module 35 is connected with the input end of the monitor 31, the output end of the monitor 31 is connected with the input end of the display interface 11, before the injection of the radioactive drug, the dosage to be injected is set in advance in the control interface 10, and then the delivery pump 32 is controlled by the controller 30 in the running process of the delivery pump 32, so that the dosage extracted in each injection is controlled, and on one hand, the accurate control of the injection dosage of the radioactive drug can be realized by the mode, on the other hand, the injection amount of the radiopharmaceutical can be directly displayed on the display interface 11 in an information form, so that the staff can conveniently obtain the information of the injection amount of the radiopharmaceutical.

Example two:

in the invention, preferably, the surface of the driving screw rod 15 is in threaded connection with two rotating rings 17, a lifting ring 18 is arranged between the two rotating rings 17, the outer side of the lifting ring 18 is fixedly connected with the side edge of a lifting plate 19, the inner side of the lifting ring 18 is fixedly connected with two movable sliders 20, the inner sides of the movable sliders 20 are slidably connected with the side edge of a fixed vertical plate 13, the outer surface of the lifting plate 19 is fixedly connected with an injection needle tube 3, when the radioactive drug is injected, the driving screw rod 15 can be rotated under the action of a servo motor 16 at the upper end of the driving screw rod 15, then the rotating rings 17 can be rotated and moved up and down through a threaded structure between the driving screw rod 15 and the rotating rings 17, so that the height adjustment of the lifting ring 18 is realized, the height position of the injection needle tube 3 can be adjusted in this way, in the radioactive drug injection process, the needle head at the lower end of the injection needle tube 3 is penetrated into the injection position of the patient in this way, the risk of radiopharmaceutical injection is reduced.

In the invention, preferably, a rotating shaft 25 is arranged in the stirring cavity 37, a driving motor 26 is arranged at the upper end of the rotating shaft 25, a rotating outer frame 27 is fixedly connected in the middle of the rotating shaft 25, stirring shafts 28 are arranged on two sides of the surface of the rotating outer frame 27, and a plurality of stirring blades 29 are arranged on the surface of the stirring shaft 28, when the radiopharmaceutical needs to be prepared, an opening at the lower end of the medicament storage cavity 21 is opened through an electromagnetic valve 23, so that the radiopharmaceutical in the medicament storage cavity 21 is discharged into the stirring cavity 37, then the rotating shaft 25 is rotated under the action of the driving motor 26, and in the rotating process of the rotating shaft 25, the rotating outer frame 27 can drive the two stirring shafts 28 to rotate, so that the radiopharmaceutical in the stirring cavity 37 is stirred.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. The utility model provides a nuclear medicine branch of academic or vocational study is stability ration injection device for radiopharmaceutical, includes dose control room (1), mixing stirring room (2), injection needle (3), drive lead screw (15), delivery pump machine (32), dose setting module (34) and stirring chamber (37), its characterized in that: the drug amount control chamber (1) is arranged on the side of the mixing and stirring chamber (2), a control interface (10) is arranged on the surface of the other side of the drug amount control chamber (1), a display interface (11) is arranged on the adjacent side of the control interface (10), an injection pipe (9) is connected to the outer side of the drug amount control chamber (1), the other end of the injection pipe (9) is arranged inside the mixing and stirring chamber (2), conveying pump machines (32) are arranged on the two sides of the inner part of the drug amount control chamber (1), a controller (30) is arranged at the lower end of each conveying pump machine (32), a connecting pipe (33) is connected to one side of each conveying pump machine (32), a conveying hose (8) is connected to the upper end of each conveying pump machine (32), the other end of each conveying hose (8) is arranged on the side of the injection chamber (3), and a monitor (31) is arranged in the middle of each conveying hose (8), the output of control interface (10) and the input interconnect of medicine volume setting module (34), medicine volume setting module (34) is inside to be provided with medicine volume monitoring module (35) and controller module (36), the output of controller module (36) and the input interconnect of controller (30), the output of controller (30) and the input interconnect of delivery pump machine (32), the output of delivery pump machine (32) and the input interconnect of needle tubing injection (3), the output of medicine volume monitoring module (35) and the input interconnect of watch-dog (31), the output of watch-dog (31) and the input interconnect of display interface (11).

2. A stable dosing device for nuclear medicine radiopharmaceuticals according to claim 1, wherein: the upper surface of the drug amount control chamber (1) is fixedly connected with a fixed vertical plate (13), the upper end and the lower end of one side of the fixed vertical plate (13) are fixedly connected with transverse plates (14), and a driving screw rod (15) is arranged between the two transverse plates (14).

3. A stable dosing device for nuclear medicine radiopharmaceuticals according to claim 2, wherein: the upper end of the driving screw rod (15) is provided with a servo motor (16), and the servo motor (16) is arranged inside the transverse plate (14).

4. A stable dosing device for nuclear medicine radiopharmaceuticals according to claim 3, wherein: the surface of the driving screw rod (15) is in threaded connection with two rotating rings (17), two lifting rings (18) are arranged in the middle of the rotating rings (17), the outer sides of the lifting rings (18) are fixedly connected to the side edge of a lifting plate (19), two movable sliding blocks (20) are fixedly connected to the inner sides of the lifting rings (18), the inner sides of the movable sliding blocks (20) are slidably connected to the side edge of a fixed vertical plate (13), and the outer surface of the lifting plate (19) is fixedly connected with an injection needle tube (3).

5. A stable dosing device for nuclear medicine radiopharmaceuticals according to claim 4, wherein: the injection needle tube (3) is internally provided with a piston mechanism (5) in a penetrating manner, the upper end of the piston mechanism (5) is provided with a hydraulic lifting motor (4), and the upper end and the lower end of the piston mechanism (5) are provided with connecting bearings (6) in a penetrating manner.

6. A stable dosing device for nuclear medicine radiopharmaceuticals according to claim 5, wherein: mix the inside bottom of teeter chamber (2) and be provided with stirring chamber (37), stirring chamber (37) upper end is provided with two medicament storage chamber (21), be provided with solenoid valve (23) in the middle of medicament storage chamber (21) and stirring chamber (37).

7. A stable dosing device for nuclear medicine radiopharmaceuticals according to claim 1, wherein: two be provided with refrigeration storage device (22) in the middle of medicament reserve chamber (21), medicament reserve chamber (21) outside surface is provided with temperature sensor (24).

8. A stable dosing device for nuclear medicine radiopharmaceuticals according to claim 7, wherein: stirring chamber (37) inside is provided with axis of rotation (25), axis of rotation (25) upper end is provided with driving motor (26), rotatory outrigger (27) of fixedly connected with in the middle of axis of rotation (25), rotatory outrigger (27) surface both sides all are provided with (mixing) shaft (28), (mixing) shaft (28) surface is provided with a plurality of stirring leaves (29).

9. A stable dosing device for nuclear medicine radiopharmaceuticals according to claim 8, wherein: the outer side surface of the drug amount control chamber (1) is provided with a liquid surface meter (12).

10. A stable dosing device for nuclear medicine radiopharmaceuticals according to claim 9, wherein: an injection needle (7) is arranged at the lower end of the injection needle tube (3), and the injection needle (7) is a disposable needle.

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