CN118436873A

CN118436873A - Clinical radiography injection device for cardiovascular examination

Info

Publication number: CN118436873A
Application number: CN202410717122.6A
Authority: CN
Inventors: 韦武龙; 蒋群湘; 刘蕊; 欧阳静琳; 陶覃龙; 吴虹欢; 黄斯萍
Original assignee: Liuzhou Peoples Hospital
Current assignee: Liuzhou Peoples Hospital
Priority date: 2024-06-04
Filing date: 2024-06-04
Publication date: 2024-08-06

Abstract

The invention discloses a clinical radiography injection device for cardiovascular examination, comprising: a storage bottle; the storage bottle is hollow, the upper end is provided with an injection mechanism, the lower end is provided with two liquid injection holes and a backflow hole, the lower end of the liquid injection hole is movably connected with an infusion catheter, and the outer wall of the storage bottle is provided with a heating mechanism; the infusion catheter is divided into an infusion catheter I and an infusion catheter II, an ultrasonic bubble detection element is arranged at the position, close to the tail end, of the infusion catheter, and the tail end of the infusion catheter is movably connected with a control valve; the control valve comprises a shell and a valve core; the shell is hollow, a first liquid inlet, a second liquid inlet, a liquid outlet and a reflux port are formed in the shell, the first liquid inlet is movably connected with a first infusion catheter, the second liquid inlet is movably connected with a second infusion catheter, a catheter is arranged on the liquid outlet, the reflux port is movably connected with a reflux catheter, a conical table is integrally formed in the shell, the middle of the conical table is provided with the reflux catheter, the reflux port is movably connected with the reflux catheter, and a reflux channel I and a reflux channel II are arranged on the conical table at 90 degrees.

Description

Clinical radiography injection device for cardiovascular examination

Technical Field

The invention belongs to the field of medical appliances, and particularly relates to a clinical radiography injection device for cardiovascular examination.

Background

Contrast Media (Contrast Media), also known as Contrast agents, plays a critical role in medical imaging examinations. It is a substance for enhancing the image viewing effect, which can help doctors to see the structures or lesions in the patient more clearly. The contrast agent mainly changes the density difference between local tissues or organs of a human body and surrounding tissues, so that contrast is formed on images, and the detection rate and the diagnosis accuracy of lesions are improved; depending on the different uses and properties of the contrast agent, it can be divided into the following classes: iodine contrast agent, barium sulfate contrast agent, gas contrast agent;

The clinical contrast injection of cardiovascular medicine generally uses an iodine contrast agent which can increase the contrast of blood vessels and other tissues so as to help doctors to more clearly see the structure and lesions of the cardiovascular system; when the contrast agent is clinically used, the contrast agent is usually extracted by adopting an injection agent, and then the contrast agent is injected into the human body, but the contrast agent is viscous, in the processes of extracting the contrast agent and injecting the contrast agent, bubbles are often extracted into an injector, and are injected into the human body along with the contrast agent, and after entering the blood vessel of the human body, the bubbles are easy to form hard air embolism, so that irreversible injury is caused to a patient;

Therefore, a clinical radiography injection device for cardiovascular examination needs to be designed, and the problem that bubbles enter a human body along with a contrast agent and damage to the human body is irreversible in the prior art is solved.

Disclosure of Invention

In order to solve the technical problems, the invention designs a clinical radiography injection device for cardiovascular examination. The clinical contrast injection device for cardiovascular examination comprises: a storage bottle; the storage bottle is hollow, the upper end of the storage bottle is provided with an injection mechanism, the lower end of the storage bottle is provided with two liquid injection holes and a backflow hole, the lower end of the liquid injection hole is movably connected with an infusion catheter, and the outer wall of the storage bottle is provided with a heating mechanism; the infusion catheter is divided into an infusion catheter I and an infusion catheter II, an ultrasonic bubble detection element is arranged at the position, close to the tail end, of the infusion catheter, and the tail end of the infusion catheter is movably connected with a control valve;

The control valve comprises a shell and a valve core; the inside of the shell is hollow, a first liquid inlet, a second liquid inlet, a liquid outlet and a reflux port are formed in the shell, the first liquid inlet is movably connected with a first infusion catheter, the second liquid inlet is movably connected with a second infusion catheter, the liquid outlet is provided with a catheter, the reflux port is movably connected with a reflux catheter, a conical table is integrally formed in the shell, the middle part of the conical table is provided with the reflux port and is movably connected with the reflux catheter, and a reflux channel I and a reflux channel II are formed in the conical table at 90 degrees; the upper end of the valve core is provided with a conical groove which is rotationally connected with the conical table, one side of the valve core is provided with a T-shaped channel, the other side of the valve core is provided with a backflow channel, three pipeline ports of the T-shaped channel comprise a pipeline port I, a pipeline port II and a pipeline port III which are clockwise arranged, and the lower end of the valve core is provided with a control rod which extends out of the shell;

One end of the backflow conduit is connected with the control valve, the other end of the backflow conduit is connected with the backflow hole, a one-way valve is arranged on the backflow conduit, and the backflow conduit is provided with a miniature negative pressure pump initial state at a position close to the backflow hole;

Further, the ultrasonic bubble detection element is an ultrasonic bubble detector, and a buzzer is arranged on the ultrasonic bubble detector and can send out an alarm when the ultrasonic bubble detector detects that the infusion catheter I or the infusion catheter II has bubbles inside;

Further, the injection mechanism comprises an electric push rod, the electric push rod is arranged at the upper end of the storage bottle, the front end of the electric push rod is provided with a push disc, and the push disc is driven to move up and down in the storage bottle by the electric push rod to control the extraction or injection of contrast agent in the storage bottle;

Further, the inside of the shell is hollow, a first liquid inlet, a second liquid inlet, a liquid outlet and a reflux port are formed in the shell, the first liquid inlet is movably connected with a first infusion catheter, the second liquid inlet is movably connected with a second infusion catheter, a catheter is arranged on the liquid outlet, the reflux catheter is movably connected with the reflux port, a conical table is integrally formed in the shell, the middle part of the conical table is provided with the reflux port and is movably connected with the reflux catheter, a reflux channel I and a reflux channel II are arranged on the conical table at 90 degrees, and a control rod of a round hole rotation connection valve core is formed at the lower end of the shell;

Further, the heating mechanism is a cylindrical heating mechanism and is detachably arranged on the outer wall of the storage bottle;

further, when the clinical radiography injection device for cardiovascular examination is used, in an initial state, the first infusion port in the control valve is right opposite to the first infusion port, the second infusion port is right opposite to one end of the backflow channel, the second infusion port is sealed by the inner wall of the shell, the third infusion port is right opposite to the liquid outlet, the other end of the backflow channel is right opposite to the second backflow channel, at the moment, the first infusion pipe is communicated with the liquid outlet, and the second infusion pipe is communicated with the backflow channel; controlling the electric push rod to work to extract the contrast agent from the storage bottle, and controlling the electric push rod, the heating element and the miniature negative pressure pump to work after the extraction is completed, wherein the contrast agent in the first infusion pipeline is injected into the human body, and the contrast agent in the second infusion pipeline is repeatedly reflowed; when the ultrasonic bubble detection element on the first infusion tube detects that bubbles exist in the first infusion tube, an alarm is given, the valve core is rotated through the control rod, so that the first infusion tube is opposite to one end of the backflow tube, the second infusion tube is opposite to the third infusion tube, the second infusion tube is opposite to the liquid outlet, the first infusion tube is sealed by the inner wall of the shell, at the moment, the first infusion tube is communicated with the backflow tube, the second infusion tube is communicated with the liquid outlet, the contrast agent with bubbles in the first infusion tube is in a backflow state, the bubbles backflow into the storage bottle and are discharged, and the contrast agent in the second infusion tube is conveyed into a human body along the tube from the liquid outlet.

The beneficial effects of the invention are as follows:

The invention discloses a clinical radiography injection device for cardiovascular examination, comprising: the infusion device comprises a storage bottle, an injection mechanism, an infusion catheter, a reflux catheter, a control valve, a heating mechanism and a miniature negative pressure pump; the injection mechanism is arranged and comprises an electric push rod, the electric push rod is arranged at the upper end of the storage bottle, a push disc is arranged at the front end of the electric push rod, and the contrast agent is extracted or injected into the storage bottle through the expansion and contraction of the electric push rod;

The heating mechanism is arranged on the outer wall of the storage bottle, and the contrast agent in the storage bottle is heated by the heating mechanism, so that the activity of bubbles in the contrast agent is improved, and the bubbles are lifted and discharged from the contrast agent;

The contrast medium injection device comprises a liquid injection guide pipe, a control valve, a backflow guide pipe and a miniature negative pressure pump, wherein the liquid injection guide pipe is divided into a first liquid injection guide pipe and a second liquid injection guide pipe, one side, close to the control valve, of the first liquid injection guide pipe and the second liquid injection guide pipe is provided with an ultrasonic bubble detection element, the control valve comprises a shell and a valve core, a first liquid inlet, a second liquid inlet, a liquid outlet and a backflow port are arranged on the shell, the first liquid injection guide pipe is connected to the first liquid inlet, the second liquid inlet is connected to the second liquid injection guide pipe, the backflow port is connected to the backflow guide pipe, the ultrasonic bubble detection element monitors whether gas exists in the first liquid injection guide pipe, in a state of no gas, any one of the first liquid injection guide pipe and the second liquid injection guide pipe is communicated with the liquid outlet, contrast medium in the two liquid injection guide pipes is continuously extracted and backflow is carried out on the contrast medium in the storage bottle under the control of the miniature negative pressure pump, and air in the contrast medium is repeatedly backflow is discharged, on the other hand, when the ultrasonic bubble detection element monitors that bubbles exist in the liquid injection guide pipe, the first liquid injection guide pipe and the second liquid injection guide pipe are connected to the backflow guide pipe, the contrast medium can be continuously injected into the human body, and the contrast medium can be prevented from flowing into the human body continuously, and the contrast medium can be continuously and the air bubble can be discharged.

Drawings

In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings used for describing the embodiments will be briefly described below.

FIG. 1 is a schematic view of the overall structure of a clinical contrast injection device for cardiovascular examinations;

FIG. 2 is a schematic cross-sectional view of a clinical contrast injection device for cardiovascular examinations;

FIG. 3 is a schematic diagram of the control valve of a clinical contrast injection device for cardiovascular examinations;

FIG. 4 is a schematic view of a control valve of a clinical contrast injection device for cardiovascular examinations in partial cross-section;

FIG. 5 is a schematic view of a partial cross-sectional view of a housing of a clinical contrast injection device for cardiovascular examinations;

Fig. 6 is a schematic partial sectional view of a cartridge of a clinical contrast injection device for cardiovascular examination.

In the drawings, the list of components represented by the various numbers is as follows:

1-storage bottle, 2-heating mechanism, 3-liquid injection mechanism, 301-electric push rod, 302-push disc, 4-miniature negative pressure pump, 501-ultrasonic bubble detection element, 601-infusion conduit I, 602-infusion conduit II, 603-conduit, 604-reflux conduit, 7-control valve, 701-shell, 7011-liquid inlet, 70111-liquid inlet I, 70112-liquid inlet II, 7012-liquid outlet, 7013-conical table, 70131-reflux pipeline I, 70132-reflux pipeline II, 70133-reflux port, 702-valve core, 7021-reflux pipeline, 7022-T-shaped pipeline, 7023-conical groove.

Detailed Description

The invention discloses a clinical radiography injection device for cardiovascular examination, comprising: a storage bottle 1; the storage bottle 1 is hollow, an injection mechanism is arranged at the upper end of the storage bottle, two liquid injection holes and a backflow hole are formed at the lower end of the storage bottle, the lower end of each liquid injection hole is movably connected with an infusion catheter 603, and a heating mechanism 2 is arranged on the outer wall of the storage bottle 1; the infusion catheter 603 is divided into an infusion catheter one 601 and an infusion catheter two 602, an ultrasonic bubble detection element 501 is arranged at the position, close to the tail end, of the infusion catheter 603, and the tail end of the infusion catheter 603 is movably connected with a control valve 7;

The control valve 7 includes a housing 701 and a valve spool 702; the inside of the shell 701 is hollow, a first liquid inlet 70111, a second liquid inlet 70112, a liquid outlet 7012 and a reflux port 70133 are arranged on the shell 701, the first liquid inlet 70111 is movably connected with a first infusion catheter 601, the second liquid inlet 70112 is movably connected with a second infusion catheter 602, a catheter 603 is arranged on the liquid outlet 7012, a reflux catheter 604 is movably connected with the reflux port 70133, a conical table 7013 is integrally formed on the shell 701, a reflux port 70133 is arranged in the middle of the conical table 7013, the reflux catheter 604 is movably connected with the conical table 7013, and a reflux channel I and a reflux channel II are arranged at 90 degrees; the upper end of the valve core 702 is provided with a conical groove 7023 which is rotationally connected with a conical table 7013, one side of the valve core 702 is provided with a T-shaped channel, the other side of the valve core 702 is provided with a backflow channel, three pipeline ports of the T-shaped channel comprise a pipeline port I, a pipeline port II and a pipeline port III which are arranged clockwise, and the lower end of the valve core 702 is provided with a control rod which extends out of the shell 701;

One end of the return conduit 604 is connected with the control valve 7, the other end of the return conduit 604 is connected with the return hole, a one-way valve is arranged on the return conduit 604, and the return conduit 604 is close to the return hole 70133 and is provided with the initial state of the miniature negative pressure pump 4;

The actual using method comprises the following steps: in the initial state, a first liquid inlet in the control valve 7 is right opposite to a first pipeline opening, a second liquid inlet is right opposite to one end of a backflow channel, the second pipeline opening is sealed by the inner wall of the shell 701, a third pipeline opening is right opposite to a liquid outlet 7012, the other end of the backflow channel is right opposite to the second backflow channel, at the moment, a first liquid conveying pipe is communicated with the liquid outlet 7012, and a second liquid conveying pipe is communicated with the backflow pipeline 7021; the electric push rod 301 is controlled to work to extract contrast medium into the storage bottle 1, and after the extraction is finished, the electric push rod 301, the heating element and the miniature negative pressure pump 4 are controlled to work, the contrast medium in the first infusion pipeline is injected into the human body, and the contrast medium in the second infusion pipeline is repeatedly refluxed; when the ultrasonic bubble detecting element 501 on the first infusion tube detects that bubbles exist in the first infusion tube, an alarm is given, the valve core 702 is rotated through the control rod, so that the first liquid inlet is opposite to the first 70131 ends of the backflow tube 7021, the second liquid inlet is opposite to the third liquid inlet, the second liquid inlet is opposite to the liquid outlet 7012, the first liquid inlet is sealed by the inner wall of the shell 701, at the moment, the first infusion tube is communicated with the backflow tube 604, the second infusion tube is communicated with the liquid outlet 7012, the contrast agent with bubbles in the first infusion tube 601 is in a backflow state, the bubbles are backflow into the storage bottle 1 to be discharged, and the contrast agent in the second infusion tube 602 is conveyed into a human body along the guide tube 603 from the liquid outlet 7012.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it will be apparent that the described embodiments are only some, but not all, embodiments of the invention.

Example 1

In the present invention, an injection mechanism is provided, and the injection mechanism includes an electric push rod 301, wherein the electric push rod 301 is disposed at the upper end of the storage bottle 1, a push plate 302 is disposed at the front end of the electric push rod 301, and the electric push rod 301 drives the push plate 302 to move up and down in the storage bottle 1, so as to control the extraction or injection of the contrast agent in the storage bottle 1.

Example 2

As shown in fig. 1, in the present invention, a detachable heating mechanism 2 is provided on the outer wall of a storage bottle 1, the heating mechanism 2 is a cylindrical heating mechanism 2, and the heating mechanism 2 heats the contrast medium in the storage bottle 1, thereby improving the activity of bubbles in the contrast medium and lifting and discharging the bubbles from the contrast medium.

Example 3

As shown in fig. 1, which is a schematic diagram of the overall structure of the present invention, as can be seen from fig. 1, the specific structure of the present invention for discharging bubbles comprises: infusion catheter 603, micro infusion pump, ultrasonic bubble detection element 501, control valve 7, catheter 603, return catheter 604; the control valve 7 includes a housing 701 and a valve spool 702; the inside of the shell 701 is hollow, a first liquid inlet 70111, a second liquid inlet 70112, a liquid outlet 7012 and a reflux port 70133 are arranged on the shell 701, the first liquid inlet 70111 is movably connected with a first infusion catheter 601, the second liquid inlet 70112 is movably connected with a second infusion catheter 602, a catheter 603 is arranged on the liquid outlet 7012, a reflux catheter 604 is movably connected with the reflux port 70133, a conical table 7013 is integrally formed on the shell 701, a reflux port 70133 is arranged in the middle of the conical table 7013, the reflux catheter 604 is movably connected with the conical table 7013, and a reflux channel I and a reflux channel II are arranged at 90 degrees; the upper end of the valve core 702 is provided with a conical groove 7023 which is rotationally connected with a conical table 7013, one side of the valve core 702 is provided with a T-shaped channel, the other side of the valve core 702 is provided with a backflow channel, three pipeline ports of the T-shaped channel comprise a pipeline port I, a pipeline port II and a pipeline port III which are arranged clockwise, and the lower end of the valve core 702 is provided with a control rod which extends out of the shell 701;

In this embodiment, the working process of discharging bubbles is that, in an initial state, the first liquid inlet of the control valve 7 is right opposite to the first liquid inlet, the second liquid inlet is right opposite to one end of the backflow channel, the second liquid inlet is sealed by the inner wall of the housing 701, the third liquid inlet is right opposite to the liquid outlet 7012, and the other end of the backflow channel is right opposite to the second backflow channel, at this time, the first liquid inlet is communicated with the liquid outlet 7012, and the second liquid inlet is communicated with the backflow channel 7021; the electric push rod 301 is controlled to work to extract contrast medium into the storage bottle 1, and after the extraction is finished, the electric push rod 301, the heating element and the miniature negative pressure pump 4 are controlled to work, the contrast medium in the first infusion pipeline is injected into the human body, and the contrast medium in the second infusion pipeline is repeatedly refluxed; when the ultrasonic bubble detection element 501 on the first infusion tube detects that bubbles exist in the first infusion tube, an alarm is given, the valve core 702 is rotated through the control rod, so that the first liquid inlet is opposite to the first 70131 ends of the backflow tube 7021, the second liquid inlet is opposite to the third liquid inlet 7012, the first liquid inlet is sealed by the inner wall of the shell 701, at the moment, the first infusion tube is communicated with the backflow tube 604, the second infusion tube is communicated with the liquid outlet 7012, the contrast agent with bubbles in the first infusion tube 601 is in a backflow state, the bubbles are backflow to the storage bottle 1 and are discharged, the contrast agent in the second infusion tube 602 is conveyed into a human body along the guide tube 603 from the liquid outlet 7012, and when the ultrasonic detection element on the second infusion tube 602 detects that bubbles exist in the second infusion tube 602, the valve core 702 is rotated, and the working state is switched; the first infusion catheter 601 and the second infusion catheter 602 are controlled by the control valve 7 to switch working states under the prompt of the ultrasonic detection element, so that bubbles are prevented from entering a human body to damage the human body, one infusion pipeline is always in an infusion state, the other infusion pipeline is in a reflux state, and the infusion efficiency is ensured.

In summary, the present invention discloses a clinical contrast injection device for cardiovascular examination, comprising: a storage bottle 1, an injection mechanism, an infusion catheter 603, a reflux catheter 604, a control valve 7, a heating mechanism 2 and a miniature negative pressure pump 4; an injection mechanism is arranged, the injection mechanism comprises an electric push rod 301, the electric push rod 301 is arranged at the upper end of the storage bottle 1, a push disc 302 is arranged at the front end of the electric push rod 301, and the contrast agent is extracted or injected into the storage bottle 1 through the expansion and contraction of the electric push rod 301;

The heating mechanism 2 is arranged on the outer wall of the storage bottle 1, and the contrast agent in the storage bottle 1 is heated by the heating mechanism 2, so that the activity of bubbles in the contrast agent is improved, and the bubbles are lifted and discharged from the contrast agent;

The device is provided with a liquid injection pipe 603, a control valve 7, a backflow pipe 604 and a miniature negative pressure pump 4, the liquid injection pipe 603 is divided into a first liquid injection pipe 603 and a second liquid injection pipe 603, one side, close to the control valve 7, of the first liquid injection pipe 601 and the second liquid injection pipe 602 is provided with an ultrasonic bubble detection element 501, the control valve 7 comprises a shell 701 and a valve core 702, the shell 701 is provided with a first liquid inlet 70111, a second liquid inlet 70112, a liquid outlet 7012 and a backflow port 70133, the first liquid inlet 70111 is connected with the first liquid injection pipe 603, the second liquid inlet 70112 is connected with the second liquid injection pipe 602, the liquid outlet 7012 is connected with the pipe 603, the backflow port 70133 is connected with the backflow pipe 604, the ultrasonic bubble detection element monitors whether the inside the liquid injection pipe 603 is gaseous or not, under the state of no gaseous state, any one of the first liquid injection pipe 601 and the second liquid injection pipe 602 is communicated with the liquid outlet 7012, the contrast medium inside the two liquid injection pipes 603 is continuously pumped into a human body under the control of the miniature negative pressure pump 4, the contrast medium inside the two liquid injection pipes is continuously pumped and stored in the storage bottle 1 to backflow, the contrast medium inside the contrast medium is repeatedly pumped and the contrast medium inside the liquid injection bottle is repeatedly, the contrast medium is discharged inside the contrast medium is continuously pumped into the human body, and the contrast medium can be continuously pumped into the human body through the liquid injection pipe and the air injection pipe 602 when the contrast medium is continuously and the contrast medium is continuously pumped into the inside the human body and the liquid injection pipe and the air pipe 602, and can be continuously and the inside the contrast medium can be continuously and stably and the air can be continuously injected into the human body and the human body.

The preferred embodiments of the invention disclosed above are merely for the purpose of helping to illustrate the invention, and the preferred embodiments do not describe all details in detail nor limit the invention to the specific embodiments described.

Claims

1. A clinical contrast injection device for cardiovascular examinations, comprising: a storage bottle; the storage bottle is hollow, the upper end of the storage bottle is provided with an injection mechanism, the lower end of the storage bottle is provided with two liquid injection holes and a backflow hole, the lower end of the liquid injection hole is movably connected with an infusion catheter, and the outer wall of the storage bottle is provided with a heating mechanism; the infusion catheter is divided into an infusion catheter I and an infusion catheter II, an ultrasonic bubble detection element is arranged at the position, close to the tail end, of the infusion catheter, and the tail end of the infusion catheter is movably connected with a control valve;

The control valve comprises a shell and a valve core; the inside of the shell is hollow, a first liquid inlet, a second liquid inlet, a liquid outlet and a reflux port are formed in the shell, the first liquid inlet is movably connected with a first infusion catheter, the second liquid inlet is movably connected with a second infusion catheter, the liquid outlet is provided with a catheter, the reflux port is movably connected with a reflux catheter, a conical table is integrally formed in the shell, the middle part of the conical table is provided with the reflux port and is movably connected with the reflux catheter, and a reflux channel I and a reflux channel II are formed in the conical table at 90 degrees; the valve core upper end sets up the taper groove and rotates with the toper platform to be connected, valve core one side sets up T type passageway, and the opposite side sets up the backward flow passageway, three pipeline mouths of T type passageway include pipeline mouths first, pipeline mouths second, pipeline mouth third according to clockwise setting, and the valve core lower extreme sets up the control lever that stretches out the casing.

One end of the backflow conduit is connected with the control valve, the other end of the backflow conduit is connected with the backflow hole, the backflow conduit is provided with the one-way valve, and the backflow conduit is provided with the miniature negative pressure pump in an initial state close to the backflow hole.

2. The clinical radiography injection device for cardiovascular examination according to claim 1, wherein the ultrasonic bubble detection element is an ultrasonic bubble detector, and a buzzer is arranged on the ultrasonic bubble detector, and can send out an alarm when the ultrasonic bubble detector detects that the infusion catheter I or the infusion catheter II has bubbles.

3. The clinical radiography injection device for cardiovascular examination according to claim 1, wherein the injection mechanism comprises an electric push rod, the electric push rod is arranged at the upper end of the storage bottle, a push disc is arranged at the front end of the electric push rod, and the push disc is driven to move up and down in the storage bottle by the electric push rod to control the extraction or injection of the contrast agent in the storage bottle.

4. The clinical radiography injection device for cardiovascular examination according to claim 1, wherein the inside of the shell is hollow, the shell is provided with a first liquid inlet, a second liquid inlet, a liquid outlet and a reflux port, the first liquid inlet is movably connected with the first transfusion catheter, the second liquid inlet is movably connected with the second transfusion catheter, the liquid outlet is provided with a catheter, the reflux port is movably connected with the reflux catheter, the shell is integrally provided with a conical table, the middle part of the conical table is provided with the reflux catheter, the conical table is provided with the reflux channel I and the reflux channel II at 90 degrees, and the lower end of the shell is provided with a control rod for rotating and connecting the valve core through a round hole.

5. The clinical contrast injection device for cardiovascular examination according to claim 1, wherein the heating mechanism is a cylindrical heating mechanism, and the heating mechanism is detachably mounted on the outer wall of the storage bottle.

6. The clinical contrast injection device for cardiovascular examination according to claim 1, wherein when the clinical contrast injection device for cardiovascular examination is used, in an initial state, the first infusion port in the control valve is right opposite to the first pipeline port, the second infusion port is right opposite to one end of the reflux channel, the second pipeline port is sealed by the inner wall of the shell, the third pipeline port is right opposite to the liquid outlet, the other end of the reflux channel is right opposite to the second reflux channel, at the moment, the first infusion pipe is communicated with the liquid outlet, and the second infusion pipe is communicated with the reflux channel; controlling the electric push rod to work to extract the contrast agent from the storage bottle, and controlling the electric push rod, the heating element and the miniature negative pressure pump to work after the extraction is completed, wherein the contrast agent in the first infusion pipeline is injected into the human body, and the contrast agent in the second infusion pipeline is repeatedly reflowed; when the ultrasonic bubble detection element on the first infusion tube detects that bubbles exist in the first infusion tube, an alarm is given, the valve core is rotated through the control rod, so that the first infusion tube is opposite to one end of the backflow tube, the second infusion tube is opposite to the third infusion tube, the second infusion tube is opposite to the liquid outlet, the first infusion tube is sealed by the inner wall of the shell, at the moment, the first infusion tube is communicated with the backflow tube, the second infusion tube is communicated with the liquid outlet, the contrast agent with bubbles in the first infusion tube is in a backflow state, the bubbles backflow into the storage bottle and are discharged, and the contrast agent in the second infusion tube is conveyed into a human body along the tube from the liquid outlet.