CN114259615A

CN114259615A - Clinical radiography injection device and injection method for cardiovascular internal medicine

Info

Publication number: CN114259615A
Application number: CN202210004401.9A
Authority: CN
Inventors: 陈雪斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-01-04
Filing date: 2022-01-04
Publication date: 2022-04-01

Abstract

The invention discloses a clinical radiography injection device and an injection method for cardiovascular medicine, and particularly relates to the technical field of medical appliances. According to the invention, the threaded piston rod, the control panel, the first gear, the second gear, the screw rod, the filter plate and the heating stirring rod are arranged, the screw rod and the filter plate are driven by the threaded cylinder to move forwards, after the filter plate is contacted with the needle seat, the contrast agent is directly extruded by the piston push plate to pass through the filter plate to enter a human body, rubber particles possibly existing in the contrast agent can be filtered by the filter plate, the condition that the rubber particles enter the human body is avoided, meanwhile, the heating stirring rod is used for stirring, dispersing and heating the contrast agent before the contrast agent is injected, the smooth injection of the contrast agent is ensured, and the comfort of the contrast agent entering the human body during the injection is ensured.

Description

Clinical radiography injection device and injection method for cardiovascular internal medicine

Technical Field

The invention relates to the technical field of medical instruments, in particular to a clinical radiography injection device and an injection method for cardiovascular medicine.

Background

Contrast agents, also known as contrast agents, are chemicals that are injected or administered into human tissues and organs in order to enhance the image viewing effect. These products generally have densities higher or lower than that of the surrounding tissues, and contrast images are displayed by some instruments, such as iodine preparations and barium sulfate, which are commonly used in X-ray observation, so as to facilitate the development of the lesion site.

Contrast agents can increase the differentiation between normal and abnormal tissue, thus assisting physicians in exploring abnormal morphological and functional lesions of human organs. And enables the physician to discover and identify some early, small lesions (liver lesions, etc.). Without contrast agents, these lesions may not be detected, resulting in missed or misdiagnosed lesions. In addition, the contrast agent can also help radiologists to differentially diagnose benign lesions that generally do not require treatment and malignant lesions that are in urgent need of treatment.

Many tissue structures of the human body are not visualized on X-ray film, they can only be "darkened" by using contrast agents, some X-ray examination techniques, such as angiography, will not be performed away from the contrast agents. In some techniques (e.g., CT), although contrast media is not always necessary, the use of contrast media will make the diagnostic image more sharp, thereby helping the physician make a more reliable diagnosis.

The contrast agent is a diagnostic agent, the most important component being iodine. Iodine is characterized by X-ray opacity, so when taking X-ray pictures, contrast can be produced by using the distribution of iodine in the body or blood vessels and soft tissues which can not be seen on the X-ray pictures can be clearly imaged, so as to assist doctors to make reliable diagnosis. The contrast agent can be injected into an artery or vein and rapidly distributed to the vascular system. The contrast agents are not metabolized ("spent") or altered in the body and they are excreted out of the body via the urinary system.

For example, the chinese patent (publication No. CN107583143B) discloses a cerebrovascular contrast injector, which comprises a push rod and a syringe, wherein a push disc is installed at a handheld end of the push rod, and a finger-pressure plate is installed at an inlet of the push rod of the syringe, and is characterized in that the push disc or the finger-pressure plate is rotatably connected with a limiting plate, so that the limiting plate rotates around a joint with the push disc or the finger-pressure plate. The cerebrovascular contrast agent injector is simple in structure and convenient to use, and can effectively prevent the formation of cerebral air embolism in the contrast agent injection process.

The contrast medium is mostly stored in a contrast medium container, when the injection device extracts the contrast medium from the contrast medium container, because the contrast medium container is sealed by a rubber cover, rubber particles are formed to fall off when a needle head of the injection device punctures the rubber cover and enter the injection device along with the contrast medium, and subsequently the rubber particles possibly enter a patient body to cause harm to the human body, and meanwhile, the contrast medium possibly has increased viscosity due to low temperature in the injection device, so that the smooth injection of the contrast medium is possibly influenced, and therefore, the clinical contrast injection device and the injection method for the cardiovascular medicine are needed to solve the problems.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention provides a clinical radiography injection device and an injection method for cardiovascular medicine, and the technical problems to be solved by the invention are as follows: the contrast medium container is sealed by the rubber cover, rubber particles are formed to fall off when the needle head of the injection device punctures the rubber cover and enter the injection device along with the contrast medium, the rubber particles possibly enter the patient body to hurt the human body subsequently, and meanwhile, the contrast medium possibly has the problem that the contrast medium is injected smoothly due to the fact that the viscosity of the contrast medium is increased at low temperature inside the injection device.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a clinical radiography injection device that cardiovascular internal medicine used, includes first connecting cylinder and second connecting cylinder, the front of second connecting cylinder is provided with the needle file, the front of needle file is provided with the syringe needle, the outer surface overlap joint of the inner wall of first connecting cylinder and piston push pedal, the back and the positive one end fixed connection of threaded piston rod of piston push pedal, the right flank of threaded piston rod and the left surface fixed connection of two fixed frames, the spout has all been seted up, two to the inner wall upper surface and the inner wall lower surface of fixed frame be provided with same sliding block in the spout, the front of sliding block is provided with first bearing, two the outer surface overlap joint of first bearing inner wall and same connecting axle, the surface of connecting axle and the inner wall fixed connection of first gear.

The utility model discloses a filter plate, including threaded piston rod, screw piston rod inner wall, screw cylinder, inner wall and the surface threaded connection of lead screw of screw cylinder, the positive one end of lead screw and the back fixed connection of backing plate, the surface of backing plate and the inner wall fixed connection of filter plate, the surface and the relative one end fixed connection of four heating stirring rods of filter plate, the surface of first connecting cylinder and the opposite face fixed connection of two splice boxes, two the opposite face of splice box is respectively with the left and right sides face overlap joint of second splice box, the right flank of splice box inner wall is provided with the uide bushing.

The utility model discloses a guide sleeve, including guide sleeve, guide bar, movable plate, limiting groove, guide sleeve inner wall and guide bar's surface overlap joint, two the relative one end of guide bar respectively with two movable plate back face fixed connection, two the opposite face of movable plate respectively with the left and right sides face overlap joint of first connecting cylinder, two the opposite face of movable plate respectively with the left and right sides face overlap joint of two second connecting cylinders, two the opposite face of movable plate respectively with two one end fixed connection that the gag lever post was carried on the back mutually, two the surface of gag lever post all with limiting groove inner wall overlap joint, two the left and right sides face at the second connecting cylinder is seted up respectively to the limiting groove.

As a further scheme of the invention: connecting threads are formed in the outer surface of the first connecting cylinder and the inner wall of the second connecting cylinder, and the connecting threads are connected in a threaded mode.

As a further scheme of the invention: one side of the moving plate, which is close to the second connecting cylinder, is arc-shaped, and two ends, which are back to back, of the guide rods are fixedly connected with the opposite surfaces of the two pressing plates respectively.

As a further scheme of the invention: the outer surface of the threaded cylinder is fixedly connected with the inner wall of the second gear, the positions of the first gear and the second gear correspond to each other, the first gear has magnetism, and the magnetism of the second gear is the same as that of the first gear.

As a further scheme of the invention: the right side of lead screw has seted up the guide way, the outer surface overlap joint of guide way inner wall and guide block, the right flank of guide block and the right flank fixed connection of threaded piston rod inner wall.

As a further scheme of the invention: the right side surface of the threaded piston rod is provided with a middle hole, the position of the middle hole corresponds to that of the first gear, one end of the back surface of the threaded piston rod is fixedly connected with the front surface of the control plate, the back surface of the first connecting cylinder is fixedly connected with the front surface of the threaded sleeve, and the inner wall of the threaded sleeve is in threaded connection with the outer surface of the threaded piston rod.

As a further scheme of the invention: the shape of backing plate sets up to circular, the surface and the spread groove inner wall overlap joint of heating stirring rod, the front at the piston push pedal is seted up to the spread groove, the backing plate has magnetism, the magnetism of backing plate is opposite with the magnetism of needle file.

An injection method of a clinical radiography injection device for cardiovascular medicine comprises the following steps:

s1, when needing to use the device to inject the contrast medium, firstly inserting the needle head into the contrast medium container, then controlling the screw piston rod to rotate and move backwards, at the same time, the screw piston rod drives the piston push plate to move backwards, simultaneously, the contrast medium in the piston container is sucked into the first connecting cylinder and the second connecting cylinder, after the extraction of the contrast medium is finished, stopping rotating the screw piston rod, directly placing the fingers into the connecting frame and pressing the press plate before needing to use the device to be inserted into the human body, at the same time, the press plate drives the moving plate to move close to the second connecting cylinder through the guide rod, simultaneously, the limit rod is inserted into the corresponding limit groove inner wall, then directly pressing the first gear and controlling the first gear to rotate, when the first gear is pressed, the first gear moves close to the second gear and is engaged with the second gear, when the first gear rotates, the second gear drives the screw cylinder to rotate, at the time, due to the screw thread effect between the screw rod and the screw cylinder and the limit position between the guide groove and the guide block moves forwards, meanwhile, the screw rod drives the backing plate, the filter plate and the heating stirring rod to move forwards;

s2, heating the stirring rod to stir and heat the contrast medium, continuing to rotate the first gear to control the filter plate to move forwards after the contrast medium is stirred and dispersed, stopping rotating the first gear and loosening the first gear when the filter plate is in contact with the front surface of the inner wall of the second connecting cylinder, and driving the first gear and the second gear to be separated by repulsive force between the first gear and the second gear;

s3, the needle head is inserted into a patient, the threaded piston rod is controlled to rotate at the moment, the threaded piston rod drives the piston push plate to move forwards, meanwhile, the threaded piston rod and the threaded cylinder are connected due to the second bearing, the threaded cylinder is prevented from being driven to rotate when the threaded piston rod rotates, the piston push plate moves forwards to extrude the contrast medium, and the heated and dispersed contrast medium penetrates through the filter plate and enters the patient.

The invention has the beneficial effects that:

1. according to the invention, the threaded piston rod, the control panel, the first gear, the second gear, the threaded cylinder, the screw rod, the filter plate and the heating stirring rod are arranged, the first gear is directly pressed to be meshed with the second gear, the second gear and the threaded cylinder are controlled to rotate, the threaded cylinder drives the screw rod and the filter plate to move forwards, when the filter plate is contacted with the needle seat, the piston push plate directly extrudes a contrast agent to penetrate through the filter plate to enter a human body, the filter plate can filter possible rubber particles in the contrast agent, the situation that the rubber particles enter the human body is avoided, and meanwhile, the heating stirring rod stirs, disperses and heats the contrast agent before the contrast agent is injected, so that the contrast agent is ensured to be smoothly injected, and the comfort of the human body during injection is ensured;

2. according to the invention, by arranging the pressing plates, the moving plate, the limiting rod, the limiting groove, the first connecting cylinder and the second connecting cylinder, when the device is used, fingers can be directly placed on the surfaces of the two pressing plates, the moving plate is driven by the control pressing plate to move, the limiting rod can smoothly enter the limiting groove, so that the first connecting cylinder and the second connecting cylinder cannot rotate relatively, and meanwhile, after injection of contrast medium is completed, the second connecting cylinder is directly controlled to rotate and the second connecting cylinder is taken down, so that the inner walls of the first connecting cylinder and the second connecting cylinder can be cleaned, and the filter plate is controlled to be cleaned, so that the use process of the device is more stable, and meanwhile, the cleaning of the device and the replacement of the inner filter plate are convenient.

3. According to the invention, the threaded sleeve, the threaded piston rod and the control plate are arranged, the threaded piston rod can be controlled to move forwards under the action of the thread between the threaded piston rod and the threaded sleeve while rotating, and the piston push plate can move more stably under the action of the thread, so that the piston push plate can move smoothly, and the contrast agent injection speed of the device is more stable and smooth.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic left-view perspective structure of the present invention;

fig. 3 is a perspective exploded view of the first and second connector barrels of the present invention;

FIG. 4 is an enlarged view of part A of the present invention;

FIG. 5 is an enlarged view of part B of the present invention;

FIG. 6 is a perspective structural view of the threaded piston rod of the present invention;

FIG. 7 is a perspective view of a second connector barrel according to the present invention;

FIG. 8 is a schematic view of a partial perspective cross-sectional structure of a threaded piston rod according to the present invention;

FIG. 9 is a perspective view of the movable plate of the present invention;

in the figure: 1. a first connecting cylinder; 2. a second connecting cylinder; 3. connecting threads; 4. a needle seat; 5. a needle head; 6. a piston push plate; 7. a threaded piston rod; 8. a threaded sleeve; 9. a control panel; 10. a fixing frame; 11. a chute; 12. a slider; 13. a first bearing; 14. a connecting shaft; 15. a first gear; 16. a second gear; 17. a threaded barrel; 18. a second bearing; 19. a screw rod; 20. a guide groove; 21. a guide block; 22. a base plate; 23. filtering the plate; 24. heating a stirring rod; 25. connecting grooves; 26. a connecting frame; 27. a guide sleeve; 28. a guide bar; 29. moving the plate; 30. pressing a plate; 31. a limiting rod; 32. a limiting groove; 33. a middle hole.

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.

As shown in fig. 1-9, the invention provides a clinical radiography injection device for cardiovascular medicine, comprising a first connecting cylinder 1 and a second connecting cylinder 2, wherein the front surface of the second connecting cylinder 2 is provided with a needle seat 4, the front surface of the needle seat 4 is provided with a needle head 5, the inner wall of the first connecting cylinder 1 is lapped with the outer surface of a piston push plate 6, the first connecting cylinder 1, the second connecting cylinder 2 and a connecting thread 3 are arranged, the first connecting cylinder 1 and the second connecting cylinder 2 are connected through the connecting thread 3, the assembly and disassembly of the first connecting cylinder 1 and the second connecting cylinder 2 are convenient, the cleaning of the interior of the first connecting cylinder 1 is convenient, the back surface of the piston push plate 6 is fixedly connected with one end of the front surface of a threaded piston rod 7, the right side surface of the threaded piston rod 7 is fixedly connected with the left side surfaces of two fixing frames 10, and by arranging the threaded piston rod 7 and a threaded sleeve 8, the threaded piston rod 7 can stably move back and forth due to the action of threads between the threaded piston rod and the threaded sleeve 8 when rotating, so that the uniform speed and stability of the contrast agent injection process are conveniently realized, the sliding grooves 11 are formed in the upper surface of the inner wall and the lower surface of the inner wall of the fixing frame 10, the first gear 15 and the second gear 16 have the same magnetism through the arrangement of the sliding grooves 11, the first gear 15 and the second gear 16 keep a separated state due to repulsion of magnetic force, when the second gear 16 is pressed, the first gear 15 can be meshed with the second gear, the same sliding block 12 is arranged in the two sliding grooves 11, the front surface of the sliding block 12 is provided with the first bearing 13, the inner walls of the two first bearings 13 are lapped with the outer surface of the same connecting shaft 14, the outer surface of the connecting shaft 14 is fixedly connected with the inner wall of the first gear 15, and the first gear 15 can be ensured to smoothly and stably rotate while the first bearing 13 plays a supporting role on the connecting shaft 14 and the first gear 15 through the arrangement of the first bearing 13 and the connecting shaft 14, meanwhile, first bearing 13 and sliding block 12 are movably arranged, so that the position of first gear 15 can be conveniently adjusted.

The inner wall of the threaded piston rod 7 is provided with a second bearing 18, the support and the limit of the threaded cylinder 17 can be realized by arranging the second bearing 18, the smooth rotation of the threaded cylinder 17 is ensured, meanwhile, the first gear 15 and the second gear 16 are stably meshed, the inner wall of the second bearing 18 is provided with the threaded cylinder 17, the inner wall of the threaded cylinder 17 is in threaded connection with the outer surface of the screw rod 19, the threaded cylinder 17 rotates by arranging the threaded cylinder 17 and the screw rod 19, the back and forth movement of the screw rod 19 and the heating stirring rod 24 can be controlled by the threaded action of the screw rod 19, the heating stirring rod 24 is ensured to smoothly stir and disperse the contrast medium, one end of the front surface of the screw rod 19 is fixedly connected with the back surface of the backing plate 22, the outer surface of the backing plate 22 is fixedly connected with the inner wall of the filter plate 23, when the contrast medium needs to be injected into a human body, the filter plate 23 further filters rubber particles in the contrast medium, the surface of filter plate 23 and the relative one end fixed connection of four heating stirring rod 24, the surface of first connecting cylinder 1 and the opposite face fixed connection of two connecting frames 26, the opposite face of two connecting frames 26 respectively with the left and right sides face overlap joint of second connecting cylinder 2, the right flank of connecting frame 26 inner wall is provided with uide bushing 27, through setting up uide bushing 27 and guide bar 28, make things convenient for the staff to remove at the stable control movable plate 29 when holding this device use.

The inner wall of the guide sleeve 27 is lapped with the outer surface of the guide rod 28, the opposite ends of the two guide rods 28 are fixedly connected with the opposite surfaces of the two movable plates 29 respectively, the connecting frame 26, the pressing plate 30 and the movable plates 29 are arranged, the use of the device is convenient to realize the control of the movement of the movable plates 29, the first connecting cylinder 1 and the second connecting cylinder 2 are positioned along the same situation, the opposite surfaces of the two movable plates 29 are lapped with the left side surface and the right side surface of the first connecting cylinder 1 respectively, the opposite surfaces of the two movable plates 29 are lapped with the left side surface and the right side surface of the two second connecting cylinders 2 respectively, the opposite surfaces of the two movable plates 29 are fixedly connected with the ends of the two limiting rods 31 which are opposite, the outer surfaces of the two limiting rods 31 are lapped with the inner wall of the limiting groove 32, and the limiting groove 32 and the limiting rods 31 are arranged, so that when the limiting rods 31 are positioned in the limiting groove 32, the first connecting cylinder 1 and the second connecting cylinder 2 can not rotate relatively, the first connecting cylinder 1 and the second connecting cylinder 2 are assembled stably, and the two limiting grooves 32 are respectively formed in the left side surface and the right side surface of the second connecting cylinder 2.

As shown in fig. 3, the outer surface of the first connecting cylinder 1 and the inner wall of the second connecting cylinder 2 are both provided with connecting threads 3, and the two connecting threads 3 are in threaded connection.

As shown in fig. 5 and 8, one surface of the moving plate 29 near the second connecting cylinder 2 is arc-shaped, and the opposite ends of the two guide rods 28 are fixedly connected to the opposite surfaces of the two pressing plates 30.

As shown in fig. 4 and 8, the outer surface of the threaded cylinder 17 is fixedly connected with the inner wall of the second gear 16, the positions of the first gear 15 and the second gear 16 correspond, the first gear 15 has magnetism, the magnetism of the second gear 16 is the same as that of the first gear 15, and by arranging the first gear 15 and the second gear 16, a worker can control the rotation of the second gear 16 and the threaded cylinder 17 through the first gear 15 conveniently, so that the moving process operation of the screw rod 19 is convenient.

As shown in fig. 8, a guide groove 20 is formed in the right side surface of the screw rod 19, the inner wall of the guide groove 20 is in lap joint with the outer surface of the guide block 21, the right side surface of the guide block 21 is fixedly connected with the right side surface of the inner wall of the threaded piston rod 7, and by arranging the guide block 21 and the guide groove 20, the guide block 21 can limit the guide groove 20 and the screw rod 19 when the threaded cylinder 17 rotates, so that the screw rod 19 is prevented from being rotated randomly, and the forward and backward moving process of the screw rod 19 is smoothly and stably performed.

As shown in fig. 1 and 4, a middle hole 33 is formed on the right side surface of the threaded piston rod 7, the position of the middle hole 33 corresponds to the position of the first gear 15, one end of the back surface of the threaded piston rod 7 is fixedly connected with the front surface of the control plate 9, the back surface of the first connecting cylinder 1 is fixedly connected with the front surface of the threaded sleeve 8, and the inner wall of the threaded sleeve 8 is in threaded connection with the outer surface of the threaded piston rod 7.

As shown in fig. 3 and 6, the backing plate 22 is circular, the outer surface of the heating stirring rod 24 is in lap joint with the inner wall of the connecting groove 25, the connecting groove 25 is arranged on the front surface of the piston push plate 6, the backing plate 22 has magnetism, the magnetism of the backing plate 22 is opposite to that of the needle seat 4, after the backing plate 22 is close to the needle seat 4, certain magnetic force is applied to the filter plate 23 by the magnetic force between the needle seat 4 and the backing plate 22, and the rotation of the screw rod 19 and the threaded cylinder 17 is ensured to be difficult to occur while the threaded piston rod 7 rotates.

s1, when needing to use the device to inject the contrast medium, firstly inserting the needle 5 into the contrast medium container, then controlling the threaded piston rod 7 to rotate and move backwards, at the same time, the threaded piston rod 7 drives the piston push plate 6 to move backwards, simultaneously sucking the contrast medium in the piston container into the first connecting cylinder 1 and the second connecting cylinder 2, after the extraction of the contrast medium is finished, stopping rotating the threaded piston rod 7, directly putting the fingers into the connecting frame 26 and pressing the press plate 30 before needing to use the device to be inserted into the human body, at the same time, the press plate 30 drives the moving plate 29 to move close to the second connecting cylinder 2 through the guide rod 28, simultaneously the limit rod 31 is inserted into the corresponding limit groove 32, then directly pressing the first gear 15 and controlling the first gear 15 to rotate, when the first gear 15 is pressed, the moving close to the second gear 16 and meshing with the second gear 16, when the first gear 15 rotates, the second gear 16 drives the threaded cylinder 17 to rotate, at the moment, the screw rod 19 moves forwards due to the screw action between the screw rod 19 and the screw cylinder 17 and the limit between the guide groove 20 and the guide block 21, and meanwhile, the screw rod 19 drives the backing plate 22, the filter plate 23 and the heating stirring rod 24 to move forwards;

s2, the heating stirring rod 24 stirs and heats the contrast medium, when the contrast medium is stirred and dispersed, the first gear 15 is continuously rotated to control the filter plate 23 to move forwards, when the filter plate 23 is in contact with the front surface of the inner wall of the second connecting cylinder 2, the first gear 15 stops rotating and the first gear 15 is loosened, and the repulsion force between the first gear 15 and the second gear 16 drives the first gear 15 and the second gear 16 to separate;

s3, inserting the needle 5 into the patient, controlling the threaded piston rod 7 to rotate at the moment, driving the piston push plate 6 to move forwards by the threaded piston rod 7, simultaneously realizing the connection between the threaded piston rod 7 and the threaded cylinder 17 due to the second bearing 18, avoiding the threaded piston rod 7 from driving the threaded cylinder 17 to rotate when rotating, driving the piston push plate 6 to move forwards to extrude the contrast medium, and enabling the heated and dispersed contrast medium to pass through the filter plate 23 to enter the patient.

In summary, the present invention:

according to the invention, the threaded piston rod 7, the control panel 9, the first gear 15, the second gear 16, the threaded cylinder 17, the lead screw 19, the filter plate 23 and the heating stirring rod 24 are arranged, the first gear 15 is directly pressed to be meshed with the second gear 16, the second gear 16 and the threaded cylinder 17 are controlled to rotate, at the moment, the threaded cylinder 17 drives the lead screw 19 and the filter plate 23 to move forwards, after the filter plate 23 is contacted with the needle seat 4, the piston push plate 6 directly extrudes the contrast agent to pass through the filter plate 23 to enter a human body, the filter plate 23 can filter possible rubber particles in the contrast agent, the condition that the rubber particles enter the human body is avoided, and meanwhile, the heating stirring rod 24 is used for stirring, dispersing and heating the contrast agent before the contrast agent is injected, so that the contrast agent is ensured to be injected smoothly, and the comfort of the human body during injection is ensured;

according to the invention, by arranging the pressing plates 30, the moving plates 29, the limiting rods 31, the limiting grooves 32, the first connecting cylinder 1 and the second connecting cylinder 2, when the device is used, fingers can be directly placed on the surfaces of the two pressing plates 30, the moving plates 29 are controlled to move by controlling the pressing plates 30, the limiting rods 31 can smoothly enter the limiting grooves 32, so that the first connecting cylinder 1 and the second connecting cylinder 2 cannot rotate relatively, and meanwhile, after the contrast medium injection is completed, the second connecting cylinder 2 is directly controlled to rotate and the second connecting cylinder 2 is taken down, so that the inner walls of the first connecting cylinder 1 and the second connecting cylinder 2 can be cleaned, and the filter plates 23 are controlled and cleaned, so that the use process of the device is more stable, and the device is convenient to clean and replace the inner filter plates 23.

According to the invention, by arranging the threaded sleeve 8, the threaded piston rod 7 and the control plate 9, the threaded piston rod 7 and the piston push plate 6 can be controlled to move forwards under the action of the thread between the threaded piston rod 7 and the threaded sleeve 8 while the threaded piston rod 7 rotates, and meanwhile, the piston push plate 6 moves more stably under the action of the thread, so that the piston push plate 6 moves smoothly, and the contrast agent injection speed of the device is more stable and smooth.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;

secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the invention, only the structures related to the disclosed embodiments are referred to, other structures can refer to common designs, and the same embodiment and different embodiments of the invention can be combined with each other without conflict;

and finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.

Claims

1. A clinical imaging injection device for cardiovascular medicine comprising a first connector barrel (1) and a second connector barrel (2), characterized in that: a needle seat (4) is arranged on the front surface of the second connecting cylinder (2), a needle head (5) is arranged on the front surface of the needle seat (4), the inner wall of the first connecting cylinder (1) is lapped with the outer surface of the piston push plate (6), the back surface of the piston push plate (6) is fixedly connected with one end of the front surface of the threaded piston rod (7), the right side surface of the threaded piston rod (7) is fixedly connected with the left side surfaces of the two fixed frames (10), the upper surface of the inner wall and the lower surface of the inner wall of the fixed frame (10) are both provided with sliding grooves (11), the two sliding grooves (11) are internally provided with the same sliding block (12), the front surface of the sliding block (12) is provided with first bearings (13), the inner walls of the two first bearings (13) are lapped with the outer surface of the same connecting shaft (14), the outer surface of the connecting shaft (14) is fixedly connected with the inner wall of the first gear (15);

the inner wall of the threaded piston rod (7) is provided with a second bearing (18), the inner wall of the second bearing (18) is provided with a threaded cylinder (17), the inner wall of the threaded cylinder (17) is in threaded connection with the outer surface of a screw rod (19), one end of the front surface of the screw rod (19) is fixedly connected with the back surface of a backing plate (22), the outer surface of the backing plate (22) is fixedly connected with the inner wall of a filter plate (23), the outer surface of the filter plate (23) is fixedly connected with one end, opposite to four heating stirring rods (24), the outer surface of a first connecting cylinder (1) is fixedly connected with opposite surfaces of two connecting frames (26), the opposite surfaces of the two connecting frames (26) are respectively lapped with the left side surface and the right side surface of a second connecting cylinder (2), and the right side surface of the inner wall of the connecting frame (26) is provided with a guide sleeve (27);

the surface overlap joint of uide bushing (27) inner wall and guide bar (28), two the relative one end of guide bar (28) is respectively with two movable plate (29) back face fixed connection mutually, two the opposite face of movable plate (29) respectively with the left and right sides face overlap joint of first connecting cylinder (1), two the opposite face of movable plate (29) respectively with the left and right sides face overlap joint of two second connecting cylinders (2), two the opposite face of movable plate (29) respectively with the one end fixed connection that two gag lever posts (31) carried on the back mutually, two the surface of gag lever post (31) all with spacing groove (32) inner wall overlap joint, two spacing groove (32) are seted up respectively at the left and right sides face of second connecting cylinder (2).

2. A clinical radiography injector apparatus for cardiovascular medicine according to claim 1, characterized in that: connecting threads (3) are arranged on the outer surface of the first connecting cylinder (1) and the inner wall of the second connecting cylinder (2), and the two connecting threads (3) are connected in a threaded mode.

3. A clinical radiography injector apparatus for cardiovascular medicine according to claim 1, characterized in that: one surface of the moving plate (29) close to the second connecting cylinder (2) is arc-shaped, and one ends of the two guide rods (28) which are back to back are fixedly connected with the opposite surfaces of the two pressing plates (30) respectively.

4. A clinical radiography injector apparatus for cardiovascular medicine according to claim 1, characterized in that: the outer surface of the threaded cylinder (17) is fixedly connected with the inner wall of the second gear (16), the positions of the first gear (15) and the second gear (16) are corresponding, the first gear (15) has magnetism, and the magnetism of the second gear (16) is the same as that of the first gear (15).

5. A clinical radiography injector apparatus for cardiovascular medicine according to claim 1, characterized in that: guide way (20) have been seted up to the right flank of lead screw (19), the surface overlap joint of guide way (20) inner wall and guide block (21), the right flank of guide block (21) and the right flank fixed connection of threaded piston rod (7) inner wall.

6. A clinical radiography injector apparatus for cardiovascular medicine according to claim 1, characterized in that: the right side surface of the threaded piston rod (7) is provided with a middle hole (33), the position of the middle hole (33) corresponds to the position of the first gear (15), one end of the back surface of the threaded piston rod (7) is fixedly connected with the front surface of the control plate (9), the back surface of the first connecting cylinder (1) is fixedly connected with the front surface of the threaded sleeve (8), and the inner wall of the threaded sleeve (8) is in threaded connection with the outer surface of the threaded piston rod (7).

7. A clinical radiography injector apparatus for cardiovascular medicine according to claim 1, characterized in that: the shape of backing plate (22) sets up to circular, the surface and the connecting groove (25) inner wall overlap joint of heating stirring rod (24), the front at piston push pedal (6) is seted up in connecting groove (25), backing plate (22) have magnetism, the magnetism of backing plate (22) is opposite with the magnetism of needle file (4).

8. An injection method of a clinical radiography injection device for cardiovascular internal medicine is characterized by comprising the following steps:

s1, when needing to use the device to inject the contrast medium, firstly inserting the needle head (5) into the contrast medium container, then controlling the threaded piston rod (7) to rotate and move backwards, at the moment, the threaded piston rod (7) drives the piston push plate (6) to move backwards, simultaneously sucking the contrast medium in the piston container into the first connecting cylinder (1) and the second connecting cylinder (2), after the extraction of the contrast medium is finished, stopping rotating the threaded piston rod (7), directly putting fingers into the connecting frame (26) and pressing the press plate (30) before needing to use the device to insert into the human body, at the moment, the press plate (30) drives the moving plate (29) to move close to the second connecting cylinder (2) through the guide rod (28), simultaneously, the limiting rod (31) is inserted into the inner wall of the corresponding limiting groove (32), then directly pressing the first gear (15) and controlling the first gear (15) to rotate, when the first gear (15) is pressed, the first gear (15) can move close to the second gear (16) and is meshed with the second gear (16), when the first gear (15) rotates, the second gear (16) drives the thread cylinder (17) to rotate, at the moment, the screw rod (19) moves forwards due to the action of threads between the screw rod and the thread cylinder (17) and the limit between the guide groove (20) and the guide block (21), and meanwhile, the screw rod (19) drives the backing plate (22), the filter plate (23) and the heating stirring rod (24) to move forwards;

s2, the heating stirring rod (24) stirs and heats the contrast agent, when the contrast agent stirs and is divided into small sections, the first gear (15) is continuously rotated to control the filter plate (23) to move forwards, when the filter plate (23) is in front contact with the inner wall of the second connecting cylinder (2), the first gear (15) stops rotating and the first gear (15) is loosened, and the repulsion force between the first gear (15) and the second gear (16) drives the first gear (15) to be separated from the second gear (16);

s3, the needle head (5) is inserted into a patient, the threaded piston rod (7) is controlled to rotate at the moment, meanwhile, the threaded piston rod (7) drives the piston push plate (6) to move forwards, meanwhile, the threaded piston rod (7) is connected with the threaded cylinder (17) due to the fact that the second bearing (18) is achieved, the threaded cylinder (17) is prevented from being driven to rotate when the threaded piston rod (7) rotates, the piston push plate (6) moves forwards at the moment to extrude contrast medium, and the heated and dispersed contrast medium penetrates through the filter plate (23) to enter the patient.