CN219022697U

CN219022697U - Special injection device of positron radiopharmaceutical 18F-FDG

Info

Publication number: CN219022697U
Application number: CN202221806569.3U
Authority: CN
Inventors: 王丽范
Original assignee: First Affiliated Hospital Of Harbin Medical University
Current assignee: First Affiliated Hospital Of Harbin Medical University
Priority date: 2022-07-14
Filing date: 2022-07-14
Publication date: 2023-05-16
Anticipated expiration: 2032-07-14

Abstract

The utility model discloses a special injection device for positron radioactive drugs 18F-FDG, which comprises a base, wherein a containing groove is formed in the center of the top of the base, a positioning block is inserted into the containing groove, the top of the positioning block is connected with an injection cylinder, the left end of the injection cylinder is provided with a needle head, the injection cylinder is internally and hermetically connected with a piston block in a sliding manner, the right end of the piston block is connected with a pull rod, the right end of the pull rod is connected with a first pull ring, a lifting table is arranged above the injection cylinder, the top of the lifting table is connected with a liquid storage tank, the lower end of the liquid storage tank is connected with a feeding pipe, the top of the injection cylinder is connected with a material receiving pipe, and the material receiving pipe is positioned under the material feeding pipe; the utility model has reasonable structural design, convenient operation, reduced radiation pollution, convenient taking out and using of the injection tube and easy operation.

Description

Special injection device of positron radiopharmaceutical 18F-FDG

Technical Field

The utility model relates to the technical field of injection devices, in particular to a special injection device for positron radioactive drugs 18F-FDG.

Background

Glucose is one of three energy substances of the human body, and a positron nuclide 18F which can be detected and imaged by PET is marked on the glucose, namely 18F-deoxyglucose (18 FDG). Because 18FDG can accurately reflect the glucose metabolism level of organs and tissues in the body, the 18FDG is known as a century molecule and is a main imaging agent for PET-CT imaging. In order to avoid the situation that the radiation dosage is increased due to long-time contact and the health of the user is affected, the operation time is shortened as much as possible.

Therefore, a person skilled in the relevant technical field improves the device, such as a radiopharmaceutical injection device for nuclear medicine department provided by chinese patent application No. cn202121511191.X, in the application document, the liquid medicine in the medicine storage barrel can enter the injection tube in real time through the liquid inlet tube, so as to avoid frequent medicine adding and injection operations, but the technical scheme in the application document still has defects, the whole structure of the device is heavier, the operation is laborious, and the use is inconvenient. For this reason, we propose a positron-emitting drug 18F-FDG dedicated injection device.

Disclosure of Invention

The utility model aims to provide a special injection device for positron radioactive drug 18F-FDG, which aims to overcome the technical problems in the prior art.

In order to achieve the technical purpose and achieve the technical effect, the utility model provides the following technical scheme:

the utility model provides a special injection device of positron radiopharmaceutical 18F-FDG, includes the base, the storage tank has been seted up at the top center of base, the locating piece has been inserted in the storage tank, the top of locating piece is connected with the syringe, the syringe needle is installed to the left end, sealed sliding connection has the piston piece in the syringe, the right-hand member of piston piece is connected with the pull rod, the right-hand member of pull rod is connected with first pull ring, the top of syringe is equipped with the elevating platform, the top of elevating platform is connected with the liquid reserve tank, the lower extreme of liquid reserve tank is connected with the feed pipe, the top of syringe is connected with the material receiving pipe, the material receiving pipe is located the feed pipe under.

Preferably, in the special injection device for the positron radioactive drug 18F-FDG, the outer wall of the feeding pipe is connected with a fixed plate, a contact switch is embedded in the left side of the bottom of the fixed plate, the right side of the bottom of the fixed plate is connected with a vertical rod, the front end of the vertical rod is connected with a straight rack, the front end of the feeding pipe is connected with a steering motor, the output end of the steering motor is connected with a steering shaft, the outer wall circumference of the steering shaft is connected with a plurality of baffle plates, the top of the fixed plate is connected with a storage battery, and the storage battery is electrically connected with the steering motor and the contact switch.

Preferably, in the special injection device for the positron radioactive drug 18F-FDG, the upper part of the receiving pipe is rotationally connected with a deflection shaft, the outer wall of the deflection shaft is connected with a valve plate, the right end of the deflection shaft is connected with a spur gear, the spur gear is meshed and connected with a spur rack, a torsion spring is connected between the spur gear and the outer wall of the receiving pipe, the left end of the deflection shaft is connected with a lug, the end of the lug is in threaded connection with a fastening bolt, and the left side wall of the receiving pipe is provided with a positioning shallow groove matched with the fastening bolt.

Preferably, in the special injection device for the positron radioactive drug 18F-FDG, an accommodating cavity is formed in the right part of the base, a screw rod is rotationally connected in the accommodating cavity, a bevel gear I is connected in the middle of the screw rod, a nut seat is symmetrically screwed on the front and back of the outer wall of the screw rod, a linkage rod is connected to the outer wall of the nut seat, a clamping arc seat is connected to the upper end of the linkage rod, an operating rod is rotationally connected to the right end of the accommodating cavity, a bevel gear II is connected to the left end of the operating rod, and the bevel gear I is connected in a meshed manner.

Preferably, in the special injection device for the positron radioactive drug 18F-FDG, the injection cylinder is made of transparent materials, the outer wall of the injection cylinder is provided with scale strips, and the front and rear parts of the right part of the injection cylinder are connected with second pull rings.

Preferably, in the special injection device for the positron radioactive drug 18F-FDG, the front part and the rear part of the lifting platform are movably inserted with U-shaped rods, the lower ends of the U-shaped rods are fixedly connected with the base, and a compression spring is connected between the lifting platform and the transverse parts of the U-shaped rods.

The beneficial effects of the utility model are as follows:

the utility model has reasonable structural design, the positioning block is arranged in the accommodating groove, the clamping arc seat is abutted against the outer wall of the injection cylinder, the structural stability of the injection cylinder can be ensured, the feeding pipe stretches into the receiving pipe after the liquid storage tank is pressed down, the steering shaft drives the baffle plate to rotate, the valve plate is opened after the deflection shaft deflects, and the radioactive medicine can fall into the injection cylinder along the receiving pipe, so that the operation is convenient, and the radiation pollution is reduced;

when the compression spring is reset, the feeding pipe is separated from the receiving pipe, the bevel gear I is driven by the bevel gear II, the two nut seats are moved away after the screw is rotated, the clamping arc seat is separated from the injection cylinder, the injection cylinder is convenient to take out and use, the structure is simple, and the operation is easy.

Drawings

In order to more clearly illustrate the technical solutions of the present utility model, the drawings that are needed in the description of the specific embodiments will be briefly described below, it being obvious that the drawings in the following description are only some examples of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view of the internal structure of the present utility model;

FIG. 3 is a side view of the screw of the present utility model;

FIG. 4 is a schematic view of a material receiving pipe according to the present utility model;

in the figure: 1. a base; 2. a receiving groove; 3. a positioning block; 4. a syringe; 5. a needle; 6. a piston block; 7. a pull rod; 8. a first pull ring; 9. a lifting table; 10. a liquid storage tank; 11. a feed pipe; 12. a material receiving pipe; 101. a receiving chamber; 102. a screw; 103. bevel gears I; 104. a nut seat; 105. a linkage rod; 106. clamping the arc seat; 107. an operation lever; 108. bevel gears II; 401. a second pull ring; 901. a U-shaped rod; 902. a compression spring; 111. a fixing plate; 112. a contact switch; 113. a vertical rod; 114. a straight rack; 115. a steering motor; 116. a steering shaft; 117. a striker plate; 118. a storage battery; 121. a deflection shaft; 122. a valve plate; 123. spur gears; 124. a torsion spring; 125. a bump; 126. and (5) fastening a bolt.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the embodiment is a special injection device for positron radioactive drugs 18F-FDG, comprising a base 1, a containing groove 2 is provided in the center of the top of the base 1, a positioning block 3 is inserted in the containing groove 2, the top of the positioning block 3 is connected with a syringe 4, the left end of the syringe 4 is provided with a needle 5, the inside of the syringe 4 is connected with a piston block 6 in a sealing sliding manner, the right end of the piston block 6 is connected with a pull rod 7, the right end of the pull rod 7 is connected with a first pull ring 8, a lifting table 9 is arranged above the syringe 4, the top of the lifting table 9 is connected with a liquid storage tank 10, the lower end of the liquid storage tank 10 is connected with a feeding pipe 11, the top of the syringe 4 is connected with a material receiving pipe 12, and the material receiving pipe 12 is located under the material feeding pipe 11.

The outer wall of the feeding pipe 11 is connected with a fixed plate 111, a contact switch 112 is embedded in the left side of the bottom of the fixed plate 111, a vertical rod 113 is connected to the right side of the bottom of the fixed plate 111, a straight rack 114 is connected to the front end of the vertical rod 113, a steering motor 115 is connected to the front end of the feeding pipe 11, a steering shaft 116 is connected to the output end of the steering motor 115, a plurality of baffle plates 117 are circumferentially connected to the outer wall of the steering shaft 116, a storage battery 118 is connected to the top of the fixed plate 111, the storage battery 118 is electrically connected with the steering motor 115 and the contact switch 112, the contact switch 112 is pressed to be opened when the feeding pipe 11 is pressed down, the steering motor 115 can drive the steering shaft 116 to rotate, and liquid medicine can be given downwards after the position of the baffle plates 117 is switched.

The upper portion of the receiving pipe 12 is rotationally connected with a deflection shaft 121, the outer wall of the deflection shaft 121 is connected with a valve plate 122, the right end of the deflection shaft 121 is connected with a spur gear 123, the spur gear 123 is in meshed connection with a spur rack 114, a torsion spring 124 is connected between the spur gear 123 and the outer wall of the receiving pipe 12, the left end of the deflection shaft 121 is connected with a protruding block 125, the end of the protruding block 125 is in threaded connection with a fastening bolt 126, the left side wall of the receiving pipe 12 is provided with a positioning shallow groove matched with the fastening bolt 126, and when a vertical rod 113 is separated from the spur gear 123, the torsion spring 124 drives the deflection shaft 121 to reset, and the valve plate 122 can seal the receiving pipe 12.

The right part of the base 1 is internally provided with a containing cavity 101, the containing cavity 101 is rotationally connected with a screw rod 102, the middle part of the screw rod 102 is connected with a first bevel gear 103, the outer wall of the screw rod 102 is in front-back symmetrical screwed connection with a nut seat 104, the outer wall of the nut seat 104 is connected with a linkage rod 105, the upper end of the linkage rod 105 is connected with a clamping arc seat 106, the right end of the containing cavity 101 is rotationally connected with an operating rod 107, the left end of the operating rod 107 is connected with a second bevel gear 108, the second bevel gear 108 is meshed with the first bevel gear 103, the position of the clamping arc seat 106 is controlled by utilizing gear transmission, positioning and clamping of the injection cylinder 4 are facilitated, and stability in fluid infusion is guaranteed.

The syringe 4 adopts transparent material to make, and the syringe 4 outer wall is equipped with the scale strip, conveniently observes liquid volume, is connected with second pull ring 401 around the syringe 4 right part, and the finger catches on when convenient operation improves the stability of operation.

The front and back parts of the lifting platform 9 are movably inserted with the U-shaped rods 901, the lower ends of the U-shaped rods 901 are fixedly connected with the base 1, a compression spring 902 is connected between the lifting platform 9 and the transverse part of the U-shaped rods 901, and the feeding pipe 11 can be separated from the receiving pipe 12 when the lifting platform 9 is not pressed by utilizing the elastic reset effect of the compression spring 902, so that the injection cylinder 4 is convenient to store and take.

The specific implementation mode of the utility model is as follows:

when the device is used, the base 1 is arranged on a plane, the positioning block 3 is arranged in the accommodating groove 2, the clamping arc seat 106 is abutted against the outer wall of the injection cylinder 4, the structural stability of the injection cylinder 4 can be ensured, the height of the lifting platform 9 is reduced after the liquid storage tank 10 is pressed down, the length of the compression spring 902 is shortened, the feeding pipe 11 stretches into the material receiving pipe 12, the steering motor 115 is started after the contact switch 112 is pressed, the steering shaft 116 drives the material blocking plate 117 to rotate, the vertical rod 113 synchronously descends along with the fixed plate 111, the spur rack 114 is meshed with the transmission spur gear 123, the valve plate 122 is opened after the deflection shaft 121 deflects, and the radioactive drug can fall into the injection cylinder 4 along the material receiving pipe 12;

after the radiopharmaceuticals are supplemented, hands leave the liquid storage tank 10, the compression spring 902 drives the lifting table 9 to reset and lift, the feeding pipe 11 is separated from the receiving pipe 12, the deflection shaft 121 is guaranteed to reset rapidly by the torsion spring 124, the fastening bolt 126 is screwed into the positioning shallow groove to be fixed, the operation rod 107 is used for driving the bevel gear II 108 to rotate, the bevel gear II 108 is meshed with the transmission bevel gear I103, the two nut seats 104 are moved away after the rotation of the screw 102, the clamping arc seat 106 is separated from the injection cylinder 4, at the moment, the injection cylinder 4 can be taken out for use, an index finger and a middle finger of an operator extend into the second pull ring 401, the needle head 5 extends into a vein, the thumb extends into the first pull ring 8 to push the pull rod 7, and the piston block 6 can push the radiopharmaceuticals into a body, so that subsequent PET detection imaging is facilitated.

In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the utility model disclosed above are intended only to assist in the explanation of the utility model. The preferred embodiments are not exhaustive or to limit the utility model to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best understand and utilize the utility model. The utility model is limited only by the claims and the full scope and equivalents thereof.

Claims

1. The special injection device of positron radiopharmaceutical 18F-FDG, including base (1), its characterized in that: the utility model discloses a syringe, including base (1), locating piece (3) are connected with injection tube (4), syringe (4) are connected with in the top center of base (1), locating piece (3) are inserted, syringe (4) are installed to syringe's left end, sealed sliding connection has piston block (6) in syringe (4), the right-hand member of piston block (6) is connected with pull rod (7), the right-hand member of pull rod (7) is connected with first pull ring (8), the top of syringe (4) is equipped with elevating platform (9), the top of elevating platform (9) is connected with liquid reserve tank (10), the lower extreme of liquid reserve tank (10) is connected with feed pipe (11), the top of syringe (4) is connected with material receiving pipe (12), material receiving pipe (12) are located the below of feed pipe (11).

2. The positron emission tomography 18F-FDG dedicated injection device as claimed in claim 1 wherein: the utility model discloses a contact switch, including fixed plate (117), battery (118) electric connection steering motor (115) and contact switch (112), fixed plate (111) bottom left side inlays and is equipped with contact switch (112), fixed plate (111) bottom right side is connected with montant (113), the front end of montant (113) is connected with straight rack (114), the front end of feed pipe (11) is connected with steering motor (115), the output of steering motor (115) is connected with steering shaft (116), the outer wall circumference of steering shaft (116) is connected with a plurality of striker plates (117), the top of fixed plate (111) is connected with battery (118).

3. The positron emission tomography 18F-FDG dedicated injection device as claimed in claim 1 wherein: the automatic feeding device is characterized in that a deflection shaft (121) is rotatably connected to the upper portion of the feeding pipe (12), a valve plate (122) is connected to the outer wall of the deflection shaft (121), a spur gear (123) is connected to the right end of the deflection shaft (121), the spur gear (123) is connected with a spur rack (114) in a meshed mode, a torsion spring (124) is connected between the spur gear (123) and the outer wall of the feeding pipe (12), a protruding block (125) is connected to the left end of the deflection shaft (121), a fastening bolt (126) is connected to the end portion of the protruding block (125) in a threaded mode, and a positioning shallow groove matched with the fastening bolt (126) is formed in the left side wall of the feeding pipe (12).

4. The positron emission tomography 18F-FDG dedicated injection device as claimed in claim 1 wherein: the novel portable electric power tool is characterized in that a containing cavity (101) is formed in the right portion of the base (1), a screw rod (102) is rotationally connected to the containing cavity (101), a first bevel gear (103) is connected to the middle of the screw rod (102), a nut seat (104) is symmetrically screwed on the front and back of the outer wall of the screw rod (102), a linkage rod (105) is connected to the outer wall of the nut seat (104), a clamping arc seat (106) is connected to the upper end of the linkage rod (105), an operating rod (107) is rotationally connected to the right end of the containing cavity (101), a second bevel gear (108) is connected to the left end of the operating rod (107), and the second bevel gear (108) is meshed with the first bevel gear (103).

5. The positron emission tomography 18F-FDG dedicated injection device as claimed in claim 1 wherein: the injection tube (4) is made of transparent materials, a scale strip is arranged on the outer wall of the injection tube (4), and a second pull ring (401) is connected to the front and back of the right part of the injection tube (4).

6. The positron emission tomography 18F-FDG dedicated injection device as claimed in claim 1 wherein: the lifting platform (9) is movably inserted with a U-shaped rod (901) at the front and rear parts, the lower end of the U-shaped rod (901) is fixedly connected with a base (1), and a compression spring (902) is connected between the lifting platform (9) and the transverse part of the U-shaped rod (901).