Accurate extraction equipment for nuclear medicine radiopharmaceuticals

Abstract

The invention relates to the technical field of radionuclide split charging, and discloses nuclear medicine radiopharmaceutical accurate extraction equipment which comprises a supporting base, and a lead tank is arranged on the left side of the top end of the supporting base. When the accurate extraction equipment for the nuclear medicine radiopharmaceuticals works, a servo motor can be controlled to drive a piston handle in a sliding seat to move left and right to adjust the position, so that the medicine extraction or pushing action of an injector is realized, and an injector body is pushed into an ionization chamber; the limiter in the ionization chamber can ensure that the injector body is located in the most sensitive area for measuring the activity, the display screen on the outer side of the ionization chamber can display the activity value of the medicine in real time, the activity of the extracted medicine can be accurately measured in real time, and the problems of repeated measurement, inaccurate operation and ray protection in the radionuclide subpackaging process of workers are solved; the problems that in the radionuclide split charging process of workers, repeated measurement is often needed, operation is not accurate, and ray damage is caused are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of radionuclide packaging, and in particular to a device for accurately extracting nuclear medicine radiopharmaceuticals. Background Art

[0002] Radioactive nuclides refer to chemical elements or isotopes with the property of radioactive decay. Their unstable atomic nuclei can spontaneously emit rays (such as α rays, β3 rays, etc.) and form stable nuclides through decay. They are widely used in medical treatment, scientific research and other fields. The ionization chamber is a detector that uses the ionizing radiation effect to measure ionizing radiation.

[0003] At present, many domestic hospitals use a purely manual mode for radionuclide packaging. The dosage is drawn based on vague estimates, and repeated drawing and measurement are often required, which greatly prolongs the drawing time and increases the radiation damage to the staff. Since the ionization chamber is usually placed at the bottom of the fume hood, the line of sight is blocked when the syringe is inserted, and it is often not placed in the most sensitive part of the ionization chamber, resulting in inaccurate dosage.

[0004] Moreover, the ionization chamber is generally placed vertically. When the syringe is inserted, the drug enters the needle due to gravity, resulting in an increase in the residual amount. The investment and operation costs of the equipment are very high, which is a disadvantage.

[0005] Now, a new type of nuclear medicine radiopharmaceutical precision extraction equipment is proposed to solve the above-mentioned shortcomings. Summary of the Invention

[0006] The purpose of the present invention is to provide a nuclear medicine radiopharmaceutical precision extraction device to solve the problems raised in the above background technology that workers often need to make repeated measurements during the packaging of radionuclides, which results in inaccurate operations and radiation damage.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solution: A nuclear medicine radiopharmaceutical precision extraction device, comprising a support base, a lead tank is provided on the left side of the top of the support base, an ionization chamber is fixedly installed on the left side of the top of the support base, a side plate is fixedly provided on the right side of the top of the support base, and a syringe holder is provided on the left side of the side plate, guide rails are respectively fixedly fixed to the two ends of the left side of the side plate, track grooves are respectively provided at the two ends of the bottom of the syringe holder, a syringe slot is provided inside the left side of the top of the syringe holder, and a syringe body is provided inside the syringe slot, a movable slot is provided inside the right side of the top of the syringe slot, and a slide is slidably connected inside the movable slot, a push handle slot is provided inside the top of the slide, a claw rod is movably connected to the right side of the slide, a connecting seat is fixed on the right side of the top of the syringe holder, and a servo motor is fixed on the right side of the connecting seat, a first bevel gear is fixed to the output shaft of the servo motor, the right side of the claw rod passes through the right side of the inside of the syringe holder, a threaded sleeve is movably connected to the right side of the syringe holder, and a second bevel gear is fixed to the outside of the threaded sleeve, and a drug extraction pipeline is fixedly installed on the left side of the syringe body.

[0008] Furthermore, the left side of the guide rail passes through the interior of the ionization chamber and extends to the top position of the right side of the outer cover, the track groove passes through the interior of the guide rail, the guide rail passes through the interior of the track groove, and the syringe bracket is slidably connected to the guide rail through the track groove.

[0009] Furthermore, the syringe card slot is connected to the interior of the movable slot, and the left side of the drug extraction pipeline passes through the interior of the ionization chamber and extends to the interior of the lead tank.

[0010] Furthermore, the right side of the claw rod passes through the interior of the threaded sleeve, the exterior of the claw rod is provided with an external thread, the interior of the threaded sleeve is provided with an internal thread that matches the external thread, and the first helical gear is meshed with the second helical gear.

[0011] Preferably, an outer cover is provided at the top of the outside of the support base, and connecting feet are fixed on both sides of the rear end of the top of the outer cover, fixing frames are fixed on both sides of the rear end of the support base, a handle is fixed at the front end of the top of the outer cover, and locking rods are provided on both sides of the front end of the top of the outer cover, and threaded holes for cooperating with the locking rods are opened on both sides of the front end of the top of the support and support base.

[0012] Furthermore, the bottom end of the connecting foot is hingedly connected to the inside of the fixing frame, the outside of the locking rod is provided with an external thread, and the bottom end of the locking rod passes through the inside of the outer cover and is rotatably connected to the threaded hole.

[0013] Preferably, bottom pads are respectively provided at the four corners of the bottom end of the support base, and adhesive is adhered and fixed to the top end of the bottom pads, and the top end of the adhesive is installed and fixed to the bottom end of the support base.

[0014] Furthermore, the bottom pad is a rubber component.

[0015] Compared with the prior art, the present invention has the following beneficial effects: the nuclear medicine radiopharmaceutical precision extraction device not only realizes rapid and accurate drug packaging, but also reduces the radiation damage to workers by reducing the number of times the radionuclide dose is measured, facilitates safety protection of the outer side of the device, and facilitates anti-slip and anti-wear protection of the top of the device;

[0016] (1) A support base, a lead tank, a guide rail, a drug extraction pipeline, an ionization chamber, a syringe body, a slide, a connecting seat, a side plate, a syringe bracket, a servo motor, a first bevel gear, a claw rod, a threaded sleeve, a second bevel gear, a track groove, a syringe slot, a movable slot and a push handle slot are provided. When working, the cylindrical ionization chamber is placed on the top of the support base and remains stationary. The guide rail extends into the ionization chamber and is located at the center of the ionization chamber. The syringe body is fixed in the syringe slot inside the top of the syringe bracket, and the syringe piston handle is simultaneously inserted into the push handle slot inside the slide. The servo motor can be controlled to drive the claw rod to move left and right inside the threaded sleeve, thereby driving the piston handle inside the slide to move left and right to adjust its position, thereby realizing the syringe extraction or pushing action. The syringe body can be pushed into the ionization chamber or dragged out of the ionization chamber by using the syringe bracket. After the connection is fixed, the syringe body is pushed into the ionization chamber. The limiter in the ionization chamber can ensure that the syringe body is located in the most sensitive area for measuring activity. The display screen outside the ionization chamber can display the drug activity value in real time. The above operation method can accurately measure the activity of the extracted drugs in real time, avoiding repeated measurements, inaccurate operations and radiation protection problems during the packaging of radionuclides by workers;

[0017] (2) By providing a support base, an outer cover, a fixing frame, a threaded hole, a connecting foot, a handle and a locking rod, when the extraction device is in use, an outer cover is hingedly installed on the top of the outer surface of the device. The outer cover can be used to provide auxiliary cover sealing and anti-collision protection for the outer side of the device, thereby reducing and avoiding damage to the device components and facilitating safety protection of the outer side of the device;

[0018] (3) By providing a bottom pad, a support base and adhesive, bottom pads are fixed at the four corners of the bottom end of the support base. The bottom pad can be used to separate the bottom of the device from the ground on which it is placed, thereby preventing the bottom of the device from slipping and protecting the bottom of the device from wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the front cross-sectional structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the enlarged front view of the claw rod of the present invention;

[0021] Figure 3 It is a schematic diagram of the enlarged side view of the guide rail of the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of the syringe support of the present invention from a top view;

[0023] Figure 5 This is a schematic side view of the outer cover of the present invention;

[0024] Figure 6 It is a schematic diagram of the three-dimensional structure of the present invention.

[0025] In the figure: 1. Base pad; 2. Support base; 3. Lead tank; 4. Outer cover; 5. Guide rail; 6. Drug extraction pipeline; 7. Ionization chamber; 8. Syringe body; 9. Slide seat; 10. Connecting seat; 11. Side plate; 12. Syringe bracket; 13. Servo motor; 14. First bevel gear; 15. Claw rod; 16. Threaded sleeve; 17. Second bevel gear; 18. Track groove; 19. Syringe slot; 20. Movable slot; 21. Push handle slot; 22. Fixing bracket; 23. Threaded hole; 24. Connecting foot; 25. Handle; 26. Locking rod; 27. Glue. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] Example 1: Please refer to Figure 1-6A nuclear medicine radiopharmaceutical precision extraction device includes a support base 2, a lead tank 3 is provided on the left side of the top of the support base 2, an ionization chamber 7 is fixed on the left side of the top of the support base 2, a side plate 11 is fixed on the right side of the top of the support base 2, and a syringe bracket 12 is provided on the left side of the side plate 11, and a guide rail 5 is fixed horizontally at both ends of the left side of the side plate 11, and a track groove 18 is provided at both ends of the bottom of the syringe bracket 12, a syringe card slot 19 is provided inside the left side of the top of the syringe bracket 12, and a syringe body 8 is provided inside the syringe card slot 19, and a syringe card slot 19 is provided inside the right side of the top of the syringe A movable groove 20 is provided, and the interior of the movable groove 20 is slidably connected to the slide 9. A push handle slot 21 is provided inside the top of the slide 9. The right side of the slide 9 is movably connected to the claw rod 15. The right side of the top of the syringe holder 12 is fixed with a connecting seat 10, and the right side of the connecting seat 10 is fixed with a servo motor 13. The output shaft of the servo motor 13 is fixed with a first bevel gear 14. The right side of the claw rod 15 passes through the inside of the right side of the syringe holder 12. The right side of the syringe holder 12 is movably connected to a threaded sleeve 16, and the outside of the threaded sleeve 16 is fixed with a second bevel gear 17. The left side of the syringe body 8 is fixed with a drug extraction pipeline 6.

[0028] The left side of the guide rail 5 passes through the interior of the ionization chamber 7 and extends to the top position of the right side of the outer cover 4. The track groove 18 passes through the interior of the guide rail 5. The guide rail 5 passes through the interior of the track groove 18. The syringe holder 12 is slidably connected to the guide rail 5 through the track groove 18. The syringe card slot 19 is connected to the interior of the movable slot 20. The left side of the drug extraction pipeline 6 passes through the interior of the ionization chamber 7 and extends to the interior of the lead tank 3. The right side of the claw rod 15 passes through the interior of the threaded sleeve 16. The outside of the claw rod 15 is provided with an external thread, and the inside of the threaded sleeve 16 is provided with an internal thread matching the external thread. The first bevel gear 14 is meshed with the second bevel gear 17;

[0029] Specifically, if Figure 1 and Figure 6As shown, during operation, the cylindrical ionization chamber 7 is placed on the top of the support base 2 and remains stationary, the guide rail 5 extends into the ionization chamber 7 and is located at the center of the ionization chamber 7, the syringe body 8 is fixed in the syringe card slot 19 inside the top of the syringe holder 12, and the syringe piston handle is simultaneously inserted into the push handle card slot 21 inside the slide 9. The servo motor 13 can be controlled to start, and the meshed first bevel gear 14 and second bevel gear 17 are used to drive the threaded sleeve 16 to rotate. While the threaded sleeve 16 rotates, the claw rod 15 can be driven to move left and right inside the threaded sleeve 16, thereby driving the piston handle inside the slide 9 to move left and right to adjust its position, thereby realizing the syringe's drug extraction or drug pushing action. The syringe body 8 can be pushed into the ionization chamber 7 or dragged out of the ionization chamber 7 by using the syringe holder 12. When the connection is fixed, the syringe body 8 is pushed into the ionization chamber 7. The limiter in the ionization chamber 7 can ensure that the syringe body 8 is located in the most sensitive area for measuring activity, and the display screen outside the ionization chamber 7 can display the drug activity value in real time. The above operation method can accurately and in real time measure the activity of the extracted medicine, avoiding repeated measurements, inaccurate operations and radiation protection problems during the packaging of radioactive nuclides by workers.

[0030] Embodiment 2: An outer cover 4 is provided at the top of the outer surface of the support base 2, and connecting feet 24 are fixed on both sides of the rear end of the top of the outer cover 4, fixing brackets 22 are fixed on both sides of the rear end of the support base 2, a handle 25 is fixed on the front end of the top of the outer cover 4, and locking rods 26 are provided on both sides of the front end of the top of the outer cover 4. Threaded holes 23 for fitting with the locking rods 26 are provided on both sides of the front end of the top of the support base 2.

[0031] The bottom end of the connecting foot 24 is hingedly connected to the inside of the fixing frame 22. The outside of the locking rod 26 is provided with an external thread. The bottom end of the locking rod 26 passes through the inside of the outer cover 4 and is rotatably connected to the threaded hole 23.

[0032] Specifically, if Figure 1 、 Figure 4 、 Figure 5 and Figure 6 As shown, an outer cover 4 is hingedly installed at the top end of the device. The outer cover 4 can be used to provide auxiliary cover sealing and anti-collision protection for the outside of the device, thereby reducing and avoiding damage to the device components.

[0033] Example 3: Base pads 1 are provided at the four corners of the bottom of the support base 2, and adhesive 27 is adhered and fixed to the top of the base pads 1. The top of the adhesive 27 is fixed to the bottom of the support base 2. The base pads 1 are made of rubber.

[0034] Specifically, if Figure 1As shown, bottom pads 1 are fixed at the four corners of the bottom end of the support base 2. The bottom pads 1 can be used to separate the bottom of the device from the ground, preventing the bottom of the device from slipping and protecting the bottom of the device from wear.

[0035] Working principle: When the extraction device of the present invention is working, the cylindrical ionization chamber 7 is placed on the top of the support base 2 and remains stationary, the guide rail 5 extends into the ionization chamber 7 and is located at the center of the ionization chamber 7, the syringe body 8 is fixed in the syringe slot 19 inside the top of the syringe holder 12, and the syringe piston handle is simultaneously inserted into the push handle slot 21 inside the slide 9. The servo motor 13 can be controlled to start, and the meshed first bevel gear 14 and second bevel gear 17 are used to drive the threaded sleeve 16 to rotate. While the threaded sleeve 16 rotates, it can drive the claw rod 15 to move left and right inside the threaded sleeve 16, and then drive the piston handle inside the slide 9 to move left and right to adjust its position, thereby realizing the syringe's drug extraction or pushing action. The syringe body 8 can be pushed into the ionization chamber 7 or dragged out of the ionization chamber 7 by using the syringe holder 12. When the connection is fixed, the syringe body 8 is pushed into the ionization chamber 7. The limiter in the ionization chamber 7 can ensure that the syringe body 8 is located in the most sensitive area for measuring activity, and the display screen outside the ionization chamber 7 can display the drug activity value in real time. Through the above-mentioned operation method, the activity of the extracted medicine can be measured accurately and in real time, avoiding repeated measurements by staff during the packaging of radioactive nuclides, inaccurate operations, and radiation protection problems. At the same time, when the extraction device is in use, an outer cover 4 is hingedly installed on the top of the outside of the device. The outer cover 4 can be used to assist the outer cover to close the anti-collision protection of the outside of the device, and bottom pads 1 are fixed at the four corners of the bottom end of the supporting base 2. The bottom pad 1 can be used to separate the bottom of the device from the ground where it is placed, and the bottom of the device can be prevented from slipping while also protecting the bottom of the device from wear.

[0036] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A nuclear medicine radiopharmaceutical precision extraction device, comprising a support base (2), characterized in that: A lead tank (3) is provided on the left side of the top of the support base (2), an ionization chamber (7) is fixedly installed on the left side of the top of the support base (2), a side plate (11) is fixed on the right side of the top of the support base (2), and a syringe bracket (12) is provided on the left side of the side plate (11), guide rails (5) are fixed transversely at both ends of the left side of the side plate (11), track grooves (18) are provided at both ends of the bottom of the syringe bracket (12), a syringe card slot (19) is provided inside the left side of the top of the syringe bracket (12), and a syringe body (8) is provided inside the syringe card slot (19), a movable groove (20) is provided inside the right side of the top of the syringe card slot (19), and the movable groove (20) is provided. A slide seat (9) is slidably connected inside, a push handle slot (21) is provided inside the top of the slide seat (9), a claw rod (15) is movably connected to the right side of the slide seat (9), a connecting seat (10) is fixed to the right side of the top of the syringe holder (12), and a servo motor (13) is fixed to the right side of the connecting seat (10), the output shaft of the servo motor (13) is fixed with a first bevel gear (14), the right side of the claw rod (15) passes through the inside of the right side of the syringe holder (12), the right side of the syringe holder (12) is movably connected to a threaded sleeve (16), and a second bevel gear (17) is fixed to the outside of the threaded sleeve (16), and a drug extraction pipeline (6) is fixed to the left side of the syringe body (8).

2. The nuclear medicine radiopharmaceutical precision extraction device according to claim 1, characterized in that: The left side of the guide rail (5) passes through the interior of the ionization chamber (7) and extends to the top position of the right side of the outer cover (4); the track groove (18) passes through the interior of the guide rail (5); the guide rail (5) passes through the interior of the track groove (18); and the syringe bracket (12) is slidably connected to the guide rail (5) through the track groove (18).

3. The nuclear medicine radiopharmaceutical precision extraction device according to claim 1, characterized in that: The syringe clamping slot (19) is connected to the interior of the movable slot (20), and the left side of the drug extraction pipeline (6) passes through the interior of the ionization chamber (7) and extends to the interior of the lead tank (3).

4. The nuclear medicine radiopharmaceutical precision extraction device according to claim 1, characterized in that: The right side of the claw rod (15) passes through the interior of the threaded sleeve (16), the exterior of the claw rod (15) is provided with an external thread, and the interior of the threaded sleeve (16) is provided with an internal thread that matches the external thread, and the first bevel gear (14) and the second bevel gear (17) are meshed and connected.

5. The nuclear medicine radiopharmaceutical precision extraction device according to claim 1, characterized in that: The top end of the support base (2) is provided with an outer cover (4), and connecting feet (24) are fixed on both sides of the rear end of the top of the outer cover (4), fixing frames (22) are fixed on both sides of the rear end of the support base (2), a handle (25) is fixed on the front end of the top of the outer cover (4), and locking rods (26) are provided on both sides of the front end of the top of the outer cover (4), and threaded holes (23) for fitting with the locking rods (26) are opened on both sides of the front end of the top of the support base (2).

6. The nuclear medicine radiopharmaceutical precision extraction device according to claim 5, characterized in that: The bottom end of the connecting foot (24) is hingedly connected to the inside of the fixing frame (22), and the outside of the locking rod (26) is provided with an external thread. The bottom end of the locking rod (26) passes through the inside of the outer cover (4) and is rotatably connected to the threaded hole (23).

7. The nuclear medicine radiopharmaceutical precision extraction device according to claim 1, characterized in that: Bottom pads (1) are respectively provided at the four corners of the bottom end of the support base (2), and adhesive (27) is adhered and fixed to the top end of the bottom pad (1), and the top end of the adhesive (27) is fixed to the bottom end of the support base (2).

8. The nuclear medicine radiopharmaceutical precision extraction device according to claim 7, characterized in that: The bottom pad (1) is a rubber component.

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