CN115006637B - Clinical radiography injection device that cardiovascular internal medicine used - Google Patents

Abstract

The invention discloses a clinical radiography injection device for cardiovascular medicine, which relates to the field of radiography injection and solves the problems that the prior clinical radiography injection device for cardiovascular medicine has single function and is difficult to fully discharge bubbles in a needle tube when in use.

Description

Clinical radiography injection device that cardiovascular internal medicine used

Technical Field

The invention relates to the technical field of contrast injection, in particular to a clinical contrast injection device for cardiovascular internal 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.

The existing clinical contrast injection device for the cardiovascular department firstly pumps a contrast medium into an injector when in use, and then injects the contrast medium in the injector into a human body, because the contrast medium is viscous, the contrast medium pumped into the injector often enters the injector along with some air bubbles and air, once the air bubbles are injected into the body, air embolism is easily caused, the life is seriously damaged, and extremely serious consequences are caused.

Disclosure of Invention

The present invention is directed to a clinical contrast injection device and an injection method for cardiovascular medicine, which can automatically extract air mixed with a contrast medium during injection, so as to solve the problems of the background art.

In order to achieve the purpose, the invention provides the following technical scheme: a clinical radiography injection device for cardiovascular medicine comprises a needle tube, a machine body, a fixing device, a pushing device, a stirring device, a preheating device and an exhaust device, wherein a pushing block is connected in the needle tube in a sliding manner, a pushing rod is fixedly connected to the pushing block, the fixing device is installed on the machine body and used for installing and disassembling the needle tube and the machine body, the pushing device is installed on the machine body and used for replacing pushing through pressing, the pushing rod is pushed into the needle tube, the stirring device is installed on the machine body and used for stirring a contrast medium in the needle tube during the operation of the pushing device so as to enable bubbles mixed in the contrast medium to float upwards, the preheating device is installed on the machine body and used for preheating the contrast medium in the needle tube during the operation of the stirring device, make its inside bubble come-up, exhaust apparatus install in the syringe needle, be used for with bubble in the syringe needle is taken out and is separated with the contrast medium, prevent to inject the air internal, be convenient for push out the contrast medium in the syringe needle through pressing, the physical power that consumes because the contrast medium concentration is great to be difficult to push out has been saved greatly, the contrast medium in the syringe needle is stirred and is preheated in the linkage simultaneously, make the temperature of contrast medium suitably rise to the suitable temperature of health, make the contrast medium homogeneous mixing simultaneously, inside bubble is heated the come-up, through stirring make the bubble can be smooth come-up exhaust apparatus department, accomplish through exhaust apparatus and bleed, thereby reduce the air content in the contrast medium in the syringe needle, the device simple structure simple operation has improved the security of injection, made things convenient for medical staff's use.

Preferably, the exhaust device comprises a device pipe fixedly mounted on the push block, an exhaust plate is connected in the device pipe in a sliding manner, an exhaust pipe communicated with the outside is formed in the side surface of the device pipe, a first spring fixedly connected with the device pipe and fixedly connected with the exhaust plate is fixedly connected on the device pipe, a sliding plate is connected in the needle pipe in a sliding manner, a connecting rod fixedly connected with one side of the exhaust plate is fixedly connected on the sliding plate, the push block penetrates through one side of the device pipe and is slidably connected with the device pipe, a plurality of exhaust pipes are fixedly connected on the device pipe, a plurality of communication holes only allowing gas molecules to pass through are formed in the side surface of each exhaust pipe, and the exhaust pipes penetrate through two sides of the sliding plate and are slidably connected with the sliding plate, so that gas in the needle pipe can be extracted, collected and separated from a contrast medium.

Preferably, the fixing device comprises a lifting buckle, lifting grooves are formed in two sides of the machine body, a second spring is fixedly connected to the inner side of each lifting groove, a lifting block is fixedly connected to the bottom end of the second spring and is connected with the lifting grooves in a sliding mode, the side face of each lifting block is fixedly connected with the bottom end of the corresponding lifting buckle, and a stop block is fixedly connected to one end of the needle tube and is convenient for fixing the needle tube fast and detaching the needle tube from the machine body.

Preferably, the pushing device includes a fixing rod fixedly mounted on the machine body, a first sliding groove is formed in the bottom surface of the machine body, a handle is connected to the first sliding groove in a sliding manner, a third spring fixedly connected to the fixing rod is fixedly connected to the handle, and a pushing member for pushing the pushing rod to move towards the inside of the needle tube when the handle is close to the fixing rod is arranged on the handle, so that the contrast medium in the needle tube can be conveniently pushed out by pressing the handle.

Preferably, the pushing member includes a first rotating shaft rotatably connected to the body, a first gear is coaxially and fixedly connected to both ends of the first rotating shaft, a first rack engaged with the first gear is fixedly connected to the handle, the first rack is slidably connected to a side surface of the body, a second rack engaged with the first gear is slidably connected to both sides of the body, and a connecting block for pushing the pushing rod is fixedly connected between the two second racks, so that the pushing rod is pushed by pressing the handle to move in the needle tube.

Preferably, the stirring device comprises a rotating disc rotatably connected with the inner wall of one end of the needle tube, a plurality of iron rods are fixedly connected to the rotating disc, the iron rods penetrate through the two ends of the pushing block, the sliding plate and the device tube and are in sliding connection with the pushing block, the sliding plate and the device tube, and a rotating part used for being linked with the pushing rod to rotate when the first rotating shaft rotates is arranged on the machine body, so that the contrast agent in the needle tube can be stirred conveniently.

Preferably, rotate the piece including fixed mounting in worm on the first pivot, it is connected with the gear post to rotate on the organism, the coaxial fixedly connected with of one end of gear post with worm engaged with worm wheel, the coaxial fixedly connected with of one end of catch bar with gear post engaged with second gear is convenient for drive the iron rod through the rotation of first gear and rotates the stirring.

Preferably, the preheating device comprises a coil fixedly mounted on the machine body, so that the iron rod can be heated in the stirring process through electromagnetic heating, and the contrast agent is preheated.

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

step one, an installation stage: after a proper amount of contrast medium is extracted from the needle tube, the needle tube is installed on the body through the fixing device;

step two, a push-out stage: operating the push-out device to drive the push rod to push the push block to inject the contrast medium in the needle tube into the patient, simultaneously linking the stirring device to stir the contrast medium in the needle tube, and simultaneously starting the preheating device to sufficiently preheat the contrast medium;

step three, an exhaust stage: during the movement of the pushing block, the air exhausting device can perform accumulated-force air exhausting, collect floating gas and separate the collected gas from the contrast medium, so that the content of air contained in the contrast medium exhausted from the needle tube is reduced;

step four, taking down: after injection is finished, the fixing device is released from fixing the needle tube, the needle tube can be taken down from the machine body, and the pushing device automatically resets.

Compared with the prior art, the invention has the beneficial effects that:

the invention solves the problems that the prior clinical radiography injection device for the cardiovascular medicine has single function and is difficult to fully discharge bubbles in a needle tube when in use, the fixing device, the pushing device, the stirring device, the preheating device and the exhaust device are arranged, so that the contrast agent in the needle tube can be conveniently pushed out by pressing, the physical strength consumed by pushing out the contrast agent with high concentration and difficulty is greatly saved, the contrast agent in the needle tube is stirred and preheated in a linkage manner, the temperature of the contrast agent is properly raised to the proper temperature of a body, the contrast agent is uniformly mixed, the bubbles in the needle tube float upwards after being heated, the bubbles can smoothly float to the exhaust device after stirring, and air extraction is completed through the exhaust device, so that the air content in the contrast agent in the needle tube is reduced, the device has simple structure and convenient operation, the injection safety is improved, and the use of medical personnel is facilitated.

Drawings

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

FIG. 2 is a schematic view of a pushing device according to the present invention;

FIG. 3 is an enlarged view of area A of FIG. 2;

FIG. 4 is a structural schematic view of the present invention in an uninstalled state;

FIG. 5 is an exploded view of the structure of the present invention;

FIG. 6 is an enlarged view of area B in FIG. 5;

FIG. 7 is a schematic structural view of a stirring device according to the present invention;

FIG. 8 is an enlarged view of area C of FIG. 7;

FIG. 9 is a schematic view of the exhaust apparatus of the present invention;

fig. 10 is a structural sectional view of an exhaust apparatus according to the present invention.

In the figure: 1-a needle tube; 2-body; 3-pushing the block; 4-pushing the rod; 5-a fixing device; 6-a pushing device; 7-a stirring device; 8-a preheating device; 9-an exhaust device; 10-a device tube; 11-a pumping plate; 12-an exhaust pipe; 13-a first spring; 14-a sliding plate; 15-a connecting rod; 16-an extraction tube; 17-communicating holes; 18-lifting buckle; 19-a lifting groove; 20-a second spring; 21-a lifting block; 22-a stop block; 23-a fixing rod; 24-a first runner; 25-a grip; 26-a third spring; 27-a pusher; 28-a first shaft; 29-a first gear; 30-a first rack; 31-a second rack; 32-connecting blocks; 33-a rotating disc; 34-an iron rod; 35-a rotating member; 36-a worm; 37-gear column; 38-a worm gear; 39-a second gear; 40-coil.

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.

Example 1

Referring to fig. 1 and 5-6, a clinical radiography injector for cardiovascular medicine is shown, which includes a syringe 1, a body 2, a fixing device 5, a pushing device 6, a stirring device 7, a preheating device 8 and an exhaust device 9, wherein the syringe 1 is slidably connected with a pushing block 3, the pushing block 3 is fixedly connected with a pushing rod 4, the fixing device 5 is mounted on the body 2 and used for mounting and dismounting the syringe 1 and the body 2, the pushing device 6 is mounted on the body 2 and used for pushing the pushing rod 4 into the syringe 1 by pressing instead of pushing, the stirring device 7 is mounted on the body 2 and used for stirring a contrast medium in the syringe 1 to float the bubbles mixed in the syringe 1 when the pushing device 6 operates, the preheating device 8 is mounted on the body 2 and used for preheating the contrast medium in the syringe 1 and floating the bubbles in the syringe 1 when the stirring device 7 operates, and the exhaust device 9 is mounted in the syringe 1 and used for extracting the bubbles in the syringe 1 and separating the contrast medium to prevent air from being injected into the body.

Referring to fig. 1-10, a method of injecting a clinical contrast injection device for cardiovascular medicine is shown, comprising the steps of:

step one, an installation stage: after a proper amount of contrast medium is extracted from the needle tube 1, the contrast medium is installed on the body 2 through the fixing device 5;

step two, a push-out stage: the pushing-out device is operated to drive the pushing rod 4 to push the pushing block 3 to inject the contrast medium in the syringe 1 into the body of a patient, the stirring device 7 is linked to stir the contrast medium in the syringe 1, and the preheating device 8 is started to fully preheat the contrast medium;

step three, an exhaust stage: during the process of moving the pushing block 3, the air exhausting device 9 can perform power storage air exhaust, collect floating air and separate the collected air from the contrast medium, so that the content of air contained in the contrast medium exhausted from the syringe 1 is reduced;

step four, taking down: after the injection is finished, the fixing device 5 releases the fixing of the needle tube 1, so that the needle tube 1 can be taken down from the machine body 2, and the pushing device 6 automatically resets.

In the embodiment, after a proper amount of contrast medium is extracted from the syringe 1, the contrast medium is installed on the body 2 through the fixing device 5, the pushing device is operated to drive the pushing rod 4 to push the pushing block 3 to inject the contrast medium in the syringe 1 into the body of a patient, the stirring device 7 is linked to stir the contrast medium in the syringe 1, the preheating device 8 is started to sufficiently preheat the contrast medium, the exhaust device 9 can accumulate force and exhaust air in the moving process of the pushing block 3, the floating air is collected and separated from the contrast medium, so that the air content in the contrast medium exhausted from the syringe 1 is reduced, after the injection is completed, the fixing of the fixing device 5 on the syringe 1 is released, the syringe 1 can be taken down from the body 2, the pushing device 6 automatically resets, the contrast medium in the syringe 1 is conveniently pushed out by pressing, the physical force consumed by pushing out due to the large concentration of the contrast medium is greatly saved, the linkage and preheating of the contrast medium in the syringe 1 are simultaneously, the temperature of the contrast medium is properly raised to a proper temperature, meanwhile, the contrast medium in the syringe 1 is conveniently and uniformly pumped out, the air can be conveniently and conveniently mixed in the syringe 1, the air bubbles in the syringe, and the syringe 1, and the simple and convenient operation of the floating air bubble injection device is achieved by the floating air bubble injection device 9.

Example 2

Referring to fig. 7-10 to describe embodiment 2, in this embodiment, the embodiment 1 is further described, the exhaust device 9 in the figure includes a device tube 10 fixedly installed on the pushing block 3, an air exhaust plate 11 is slidably connected to the device tube 10, an air exhaust pipe 12 communicated with the outside is opened on the side surface of the device tube 10, a first spring 13 fixedly connected to the air exhaust plate 11 is fixedly connected to the device tube 10, the first spring 13 is made of plastic material, a sliding plate 14 is slidably connected to the needle tube 1, a connecting rod 15 fixedly connected to one side of the air exhaust plate 11 is fixedly connected to the sliding plate 14, the pushing block 3 penetrates through one side of the device tube 10 and is slidably connected to the device tube 10, a plurality of air exhaust tubes 16 are fixedly connected to the device tube 10, a plurality of communicating holes 17 through which only gas molecules can pass are opened on the side surface of the air exhaust tubes 16, and the air exhaust tubes 16 penetrate through both sides of the sliding plate 14 and are slidably connected to the sliding plate 14.

Referring to fig. 4-6, the fixing device 5 shown in the figure includes a lifting buckle 18, two sides of the machine body 2 are both provided with lifting grooves 19, a second spring 20 is fixedly connected in the lifting grooves 19, a lifting block 21 slidably connected with the lifting grooves 19 is fixedly connected to the bottom end of the second spring 20, the side surface of the lifting block 21 is fixedly connected with the bottom end of the lifting buckle 18, and one end of the needle tube 1 is fixedly connected with a stopper 22.

In this embodiment, the lifting buckle 18 is pulled up to move the lifting block 21 up, the second spring 20 is compressed, the distance between the lifting buckle 18 and the upper part of the body 2 is increased, the syringe 1 for extracting contrast medium is inserted into the position between the lifting buckle 18 and the body 2, the lifting buckle 18 can be released when the stopper 22 and the push rod 4 are positioned at the same side of the lifting buckle 18, the second spring 20 rebounds, the lifting buckle 18 moves down to press the syringe 1, when the pushing device 6 pushes the push block 3 to compress the contrast medium in the syringe 1, the generated resistance is large due to the large viscosity of the contrast medium, the contrast medium pushes the sliding plate 14 first, the sliding plate 14 pushes the connecting rod 15 to make the air suction plate 11 slide to one side of the exhaust pipe 12, the first spring 13 is compressed to discharge the gas at the side to the outside through the exhaust pipe 12, the space pressure in the device pipe 10 near the sliding plate 14 is greatly reduced to generate suction force, the air pressure in the device pipe 14 is exposed after the air suction is extracted from the device pipe 10, the push rod 4 slightly upward, the air is discharged to the preheating device 8 through the preheating device 7 until the syringe 17, and the syringe 17, the air is completely pushed up to the syringe 1, and the syringe 17, and the contrast medium is discharged into the syringe 17.

Example 3

Referring to fig. 2-4 to describe embodiment 3, in this embodiment, the embodiment 1 is further described, the pushing device 6 in the figure includes a fixing rod 23 fixedly installed on the machine body 2, a first sliding slot 24 is formed on the bottom surface of the machine body 2, a handle 25 is slidably connected in the first sliding slot 24, a third spring 26 fixedly connected with the fixing rod 23 is fixedly connected on the handle 25, and a pushing member 27 for pushing the pushing rod 4 to move towards the needle tube 1 when the handle 25 approaches the fixing rod 23 is arranged on the handle 25.

Referring to fig. 2-4, the pushing member 27 shown in the figure includes a first rotating shaft 28 rotatably connected to the body 2, a first gear 29 coaxially and fixedly connected to both ends of the first rotating shaft 28, a first rack 30 engaged with the first gear 29 and fixedly connected to the handle 25, the first rack 30 slidably connected to the side of the body 2, a second rack 31 engaged with the first gear 29 and slidably connected to both sides of the body 2, and a connecting block 32 for pushing the push rod 4 and fixedly connected between the two second racks 31.

Referring to fig. 5-6, the stirring device 7 shown in the drawings includes a rotating disc 33 rotatably connected to an inner wall of one end of the needle tube 1, a plurality of iron rods 34 are fixedly connected to the rotating disc 33, the iron rods 34 penetrate through two ends of the pushing block 3, the sliding plate 14 and the device tube 10 and are slidably connected to the pushing block 3, the sliding plate 14 and the device tube 10, and a rotating member 35 for rotating the pushing rod 4 in a linkage manner when the first rotating shaft 28 rotates is disposed on the body 2.

Referring to fig. 4-6, the rotating member 35 includes a worm 36 fixedly mounted on the first rotating shaft 28, a gear column 37 is rotatably connected to the housing 2, a worm gear 38 engaged with the worm 36 is coaxially and fixedly connected to one end of the gear column 37, and a second gear 39 engaged with the gear column 37 is coaxially and fixedly connected to one end of the push rod 4.

Referring to fig. 5-6, the preheating device 8 shown in the drawings includes a coil 40 fixedly mounted on the body 2.

In this embodiment, the handle 25 and the fixing rod 23 are held tightly, the handle 25 slides to one side of the fixing rod 23, the third spring 26 is compressed, the handle 25 drives the first gear 29 to slide, so as to drive the first gear 29 to rotate, the first gear 29 drives the second rack 31 to slide on the body 2, so that the connecting block 32 pushes the second gear 39 to move the push rod 4 into the needle tube 1 to push out the contrast medium, the first gear 29 rotates to drive the first rotating shaft 28 and the worm 36 to rotate, the worm 36 drives the worm gear 38 to rotate, so as to rotate the gear column 37, the gear column 37 drives the second gear 39 which continuously moves to rotate, the second gear 39 drives the push rod 4 to rotate, the push rod 4 drives the push block 3 to rotate, so that the iron rod 34 rotates and stirs in the needle tube 1 along with the rotating disc 33, and the iron rod 34 inside the coil 40 is electrified to generate an electromagnetic heating effect while rotating, so that the air bubbles inside the coil 40 and the air bubbles are separated from the needle tube 17, and the bubbles are sucked into the needle tube.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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 (7)

1. A clinical imaging injector for cardiovascular medicine, comprising:

the needle tube (1) and the machine body (2), a pushing block (3) is connected in the needle tube (1) in a sliding mode, and a pushing rod (4) is fixedly connected to the pushing block (3);

further comprising:

the fixing device (5) is arranged on the machine body (2), and is used for mounting and dismounting the needle tube (1) and the machine body (2);

the pushing device (6) is arranged on the machine body (2) and used for pushing the pushing rod (4) into the needle tube (1) by pressing instead of pushing;

the stirring device (7) is arranged on the body (2) and used for stirring the contrast agent in the needle tube (1) in a linkage manner when the pushing device (6) operates so as to enable bubbles mixed in the needle tube to float upwards;

the preheating device (8) is arranged on the machine body (2) and used for preheating the contrast agent in the needle tube (1) when the stirring device (7) works so as to enable bubbles in the needle tube to float upwards;

the air exhaust device (9) is installed in the needle tube (1) and used for exhausting bubbles in the needle tube (1) and separating the bubbles from a contrast medium to prevent air from being injected into a human body, the air exhaust device (9) comprises a device tube (10) fixedly installed on the push block (3), an air exhaust plate (11) is connected in the device tube (10) in a sliding mode, an air exhaust pipe (12) communicated with the outside is arranged on the side face of the device tube (10), a first spring (13) fixedly connected with the air exhaust plate (11) is fixedly connected to the device tube (10), a sliding plate (14) is connected in the needle tube (1) in a sliding mode, a connecting rod (15) fixedly connected with one side of the air exhaust plate (11) is fixedly connected to the sliding plate (14), the push block (3) penetrates through one side of the device tube (10) and is connected with the device tube (10) in a sliding mode, a plurality of air exhaust tubes (16) are fixedly connected to the device tube (10), a plurality of communication holes (17) which can only pass through gas molecules are formed in the side face of the device tube (16), and the sliding plate (14) is connected with two sides of the sliding plate (14).

2. A clinical radiography injector apparatus for cardiovascular medicine according to claim 1, characterized in that: fixing device (5) detain (18) including going up and down, lift groove (19) have all been seted up to the both sides of organism (2), fixedly connected with second spring (20) in lift groove (19), the bottom fixedly connected with of second spring (20) with lift groove (19) sliding connection's elevator (21), the side of elevator (21) with the bottom fixed connection who goes up and down detain (18), the one end fixedly connected with dog (22) of needle tubing (1).

3. A clinical radiography injection apparatus for cardiovascular medicine according to claim 2, characterized in that: the pushing device (6) comprises a fixing rod (23) fixedly mounted on the machine body (2), a first sliding groove (24) is formed in the bottom surface of the machine body (2), a handle (25) is connected to the first sliding groove (24) in a sliding mode, a third spring (26) fixedly connected with the fixing rod (23) is fixedly connected to the handle (25), and a pushing piece (27) used for pushing the push rod (4) to move towards the needle tube (1) when the handle (25) is close to the fixing rod (23) is arranged on the handle (25).

4. A cardiovascular clinical radiography injection apparatus according to claim 3, wherein: the pushing part (27) comprises a first rotating shaft (28) rotatably connected with the machine body (2), two ends of the first rotating shaft (28) are coaxially and fixedly connected with first gears (29), a first rack (30) meshed with the first gears (29) is fixedly connected to the handle (25), the first rack (30) is slidably connected with the side face of the machine body (2), two sides of the machine body (2) are slidably connected with second racks (31) meshed with the first gears (29), and a connecting block (32) used for pushing the pushing rod (4) is fixedly connected between the two second racks (31).

5. A clinical radiography injection apparatus for cardiovascular medicine according to claim 4, characterized in that: agitating unit (7) include with needle tubing (1) one end inner wall rotates rolling disc (33) of connecting, a plurality of iron bars (34) of fixedly connected with on rolling disc (33), iron bar (34) run through promote piece (3), sliding plate (14) with the both ends of device pipe (10), and with promote piece (3), sliding plate (14) with the equal sliding connection of device pipe (10), be equipped with on organism (2) and be used for when first pivot (28) rotate the linkage the catch bar (4) carry out the pivoted and rotate piece (35).

6. A clinical radiography injection apparatus for cardiovascular medicine according to claim 5, characterized in that: rotate piece (35) including fixed mounting in worm (36) on first pivot (28), it is connected with gear column (37) to rotate on organism (2), the coaxial fixedly connected with of one end of gear column (37) with worm (36) engaged with worm wheel (38), the coaxial fixedly connected with of one end of catch bar (4) with gear column (37) engaged with second gear (39) mutually.

7. A clinical radiography injection apparatus for cardiovascular medicine according to claim 6, characterized in that: the preheating device (8) comprises a coil (40) fixedly mounted on the machine body (2).

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