CN113398365B

CN113398365B - Clinical radiography injection device and injection method for cardiovascular medicine

Info

Publication number: CN113398365B
Application number: CN202110826625.3A
Authority: CN
Inventors: 不公告发明人
Original assignee: Nanjing Ruiqi Zhuoyue Medical Beauty Clinic Co ltd
Current assignee: Nanjing Ruiqi Zhuoyue Medical Beauty Clinic Co ltd
Priority date: 2021-07-21
Filing date: 2021-07-21
Publication date: 2022-10-28
Anticipated expiration: 2041-07-21
Also published as: CN113398365A

Abstract

The invention discloses a clinical radiography injection device and an injection method for cardiovascular medicine, and relates to the technical field of injectors. The stirring device has the effects of conveniently stirring the contrast agent to make the contrast agent sparse, synchronously heating the contrast agent in the stirring process, and improving the comfort of a patient.

Description

Clinical radiography injection device and injection method for cardiovascular internal medicine

Technical Field

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

Background

The contrast media injector currently used clinically is similar to a common syringe.

Because the contrast medium is rested in the container for a long time, thereby after being extracted to the syringe, the contrast medium is comparatively thick, and the piston promotes the resistance great when the injection, and the steady entering human body of difficult control contrast medium is internal, and the security is lower, and traditional injector simultaneously is difficult to heat the contrast medium and heaies up, leads to the contrast medium that the temperature is lower to be getting into the human body after, easily causes patient's discomfort.

Disclosure of Invention

The invention aims to provide a clinical contrast injection device and an injection method for cardiovascular medicine, which have the effects of conveniently stirring and sparsely heating a contrast agent, synchronously heating and warming the contrast agent in the stirring process and improving the comfort of a patient, and solve the problems that the contrast agent is viscous after being extracted into an injector, the resistance of a piston in pushing is large during injection, the contrast agent is difficult to control to stably enter a human body, the safety is low, and the traditional injector is difficult to heat and warm the contrast agent, so that the discomfort of the patient is easily caused after the contrast agent with low temperature enters the human body.

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 injection tube, syringe needle and piston board one, the lower fixed surface of piston board one is connected with the piston rod, the lower surface of injection tube is offered and is used for the piston rod passes and sliding connection's opening one, the inner wall fixedly connected with heat pipe of injection tube, the heat pipe with it has heat-conducting liquid to fill between the injection tube, still including being used for driving the heating part that heat-conducting liquid circulation flows and heat up, and when the piston rod removed, make the piston board remove or only do the switching part that removes while rotating, the heating part with switching part transmission is connected.

Preferably, the switching component comprises a directional rod and an angle adjusting component for adjusting the directional rod, an external spline groove is formed in the surface of the piston rod, an internal spline sleeve is sleeved on the groove wall of the external spline groove in a sliding mode, a connecting plate is connected to the surface of the internal spline sleeve in a fixed-axis rotating mode, a supporting plate is fixedly connected to the surface of the connecting plate, a sleeve block is sleeved on the surface of the directional rod in a sliding mode, a rack plate is hinged to the surface of the sleeve block, a groove used for the rack plate to penetrate through and be connected with the supporting plate in a sliding mode is formed in the surface of the supporting plate, a gear meshed with the rack plate is fixedly connected to the surface of the internal spline sleeve in a fixed-axis rotating mode, a push-pull plate is connected to the lower surface of the piston rod in a fixed-axis rotating mode, a first spring is sleeved on the surface of the piston rod, and two end portions of the first spring are respectively abutted to the opposite sides of the supporting plate and the push-pull plate.

Preferably, the heating part comprises a liquid storage container fixedly connected to the lower surface of the injection tube, the inner wall of the liquid storage container is slidably connected with a piston plate II, a spring II is fixedly connected between the piston plate II and the liquid storage container together, the rack plate is located on the side of the piston plate II, a heating tube is fixedly connected to the inner wall of the liquid storage container, two circulating circulation tubes are fixedly connected between the injection tube and the heating tube together, and one-way valves are arranged on the circulating circulation tubes.

Preferably, the heat conducting pipe further comprises a ring plate which is connected with the inner wall of the heat conducting pipe in a fixed-shaft rotating mode, a disturbance rod is fixedly connected to the upper surface of the ring plate, and a second opening which is used for the disturbance rod to penetrate through and is connected with the piston plate in a sliding mode is formed in the surface of the first piston plate.

Preferably, the angle adjusting part comprises a connecting seat fixedly connected to the lower surface of the injection tube, a rotating shaft is rotatably connected to a surface dead axle of the connecting seat, the surface of the rotating shaft is fixedly connected to one end of the orientation rod, a worm wheel is fixedly connected to the surface of the rotating shaft, and a worm connected to the worm wheel is rotatably connected to the lower surface dead axle of the injection tube.

Preferably, the lower end of the injection cylinder is fixedly connected with a cover body.

Preferably, the lower end of the worm is fixedly connected with a handle.

Preferably, the heat conduction liquid is heat conduction oil.

The present invention provides the following injection methods: a method for injecting clinical contrast agent for cardiovascular medicine comprises the following steps:

s1: inserting the injection needle into a container storing contrast medium, then drawing a part of the contrast medium into the injection tube by pulling the piston rod, and then upwards moving the injection needle;

s2: the piston rod is pushed and pulled back and forth in a small range, and the piston plate I can be driven to reciprocate up and down in a small range through the switching component and simultaneously rotate in a reciprocating manner, so that the contrast agent is uniformly dispersed;

s3: after the contrast agent is stirred, the piston plate enters a moving state only by operating the switching component, then the piston rod is pushed upwards, the injection needle is inserted into the corresponding position of the skin of a patient after air in the injection tube is exhausted, and then the piston rod is pushed continuously, so that the sparse and heated contrast agent can be slowly pushed into the human body.

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

1. in the invention, the contrast medium is statically placed in the container for a long time, so that after the contrast medium is extracted, the contrast medium in the syringe is viscous, the pushing resistance of the piston plate I is large during injection, the piston rod and the piston plate I can reciprocate in a small range while reciprocating, and then the contrast medium in the syringe can be disturbed, so that the contrast medium is uniformly dispersed, and the injection can be carried out by pushing the piston plate I.

2. The invention rotates the ring plate and the disturbing rod in a reciprocating way, and the disturbing rod penetrates through the contrast medium, thereby reducing the stirring dead angle, so that the contrast medium is stirred vigorously, fully and uniformly

3. According to the invention, by controlling the inclination angle of the directional rod, when an operator applies the same push-pull acting force to the push-pull plate, the reciprocating transverse moving distance of the rack plate can be increased due to the change of the inclination angle of the directional rod, so that the rotating speed of the reciprocating rotation of the piston plate I and the disturbing rod can be increased, the same acting force is applied, the stirring efficiency is improved by adjusting the inclination angle of the directional rod, and the stirring device can adapt to the stirring process of contrast media in viscous states with different degrees under the condition of relative labor saving.

4. The heating pipe heats the heat conducting liquid which flows circularly while stirring, the heated heat conducting liquid can transfer heat to the heat conducting pipe, and the heat conducting pipe transfers heat to the contrast agent, so that the comfort of a patient is improved during injection; because the heat conducting liquid flows circularly, the heated heat conducting liquid can uniformly transfer heat to the heat conducting pipe, thereby avoiding the pain of a patient caused by overhigh local temperature in the contrast agent during injection; the first piston plate reciprocates up and down in a small range, so that the contrast agent also reciprocates up and down in a small range, the contrast agent can be fully contacted with the inner wall of the heat conduction pipe, and the heat exchange efficiency is improved.

5. After the contrast agent is stirred, the orientation rod is rotated to the vertical state and the state shown in fig. 5, the push-pull plate is pushed, so that the sparse and heated contrast agent can be slowly pushed into a human body, in the process, the orientation rod is in the vertical state, the rotation of the piston rod and the piston plate I is further limited, the piston plate I only moves axially when the operator pushes the push-pull plate, the phenomenon that the contrast agent is driven to generate eddy current when the piston plate I rotates, the contrast agent in the eddy current state enters the human body, possibly caused discomfort of the human body is avoided, and the injection safety is improved.

Drawings

FIG. 1 is a front view of the structure of the present invention in a first state;

FIG. 2 is an enlarged view of the structure of FIG. 1 at A in accordance with the present invention;

FIG. 3 is a right side view of the structure of FIG. 2 in accordance with the present invention;

FIG. 4 is a second state elevational view of the structure of the present invention;

FIG. 5 is a third state elevational view of the structure of the present invention;

figure 6 is an isometric view of a structure of the present invention.

In the figure: 1. an injection tube; 2. an injection needle; 3. a piston plate I; 4. a piston rod; 5. a heat conducting pipe; 6. a heat-conducting liquid; 7. an orientation bar; 8. an outer spline groove; 9. an inner spline sleeve; 10. a connecting plate; 11. a support plate; 12. sleeving blocks; 13. a rack plate; 14. a gear; 15. a push-pull plate; 16. a first spring; 17. a liquid storage container; 18. a second piston plate; 19. a second spring; 20. heating a tube; 21. a circulating circulation pipe; 22. a one-way valve; 23. a ring plate; 24. a disturbance rod; 25. a connecting seat; 26. a rotating shaft; 27. a worm gear; 28. a worm; 29. a cover body; 30. a handle.

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 obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

Referring to fig. 1 to 6, the present invention provides a technical solution: a clinical contrast injection device for cardiovascular medicine comprises an injection tube 1, an injection needle 2 and a piston plate 3, wherein the lower surface of the piston plate 3 is fixedly connected with a piston rod 4, before injection, the injection needle 2 is inserted into a container storing contrast medium, then a part of the contrast medium is extracted into the injection tube 1 by pulling the piston rod 4, then the injection needle 2 is upwards moved to the state shown in figure 1, at the moment, the contrast medium in the injection tube 1 can be stirred in a disturbing manner, the lower surface of the injection tube 1 is provided with a first opening through which the piston rod 4 passes and is in sliding connection, the inner wall of the injection tube 1 is fixedly connected with a heat conduction tube 5, the heat conduction liquid 6 is filled between the heat conduction tube 5 and the injection tube 1, the device also comprises a heating component for driving the heat conduction liquid 6 to circularly flow and heat up, the heat conduction liquid 6 between the injection tube 1 and the heat conduction tube 5 can circularly flow through the heating component, when the heating component is passed, the circularly flow of the heat conduction liquid 6, the heated heat conduction liquid can transfer heat to the contrast medium, and the comfort of a patient can be improved when injection is carried out; the heat conducting liquid 6 flows circularly, so that the heated heat conducting liquid 6 can uniformly transfer heat to the heat conducting pipe 5, the local temperature in the contrast medium is prevented from being too high, pain of a patient is caused during injection, the piston plate 3 can move while rotating or only moves when the piston rod 4 moves, the heating component is in transmission connection with the switching component, when the contrast medium in the injection tube 1 is stirred in a disturbing mode, the piston plate 3 can move while rotating when the piston rod 4 is pulled up and down in a small range through operation of the switching component, then the contrast medium in the injection tube 1 can be disturbed, the contrast medium is uniformly dispersed, injection is carried out by pushing the piston plate 3, after the contrast medium is stirred, the piston plate 3 only moves through reverse operation of the switching component, an operator firstly pushes the piston rod 4 upwards, after air in the injection tube 1 is exhausted, then the injection tube 2 is inserted into the corresponding position of the skin of the patient, then the piston rod 4 is pushed continuously, and the sparse contrast medium with the temperature increased can be slowly pushed to the injection person.

In this embodiment, as shown in fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, the switching component includes a directional rod 7 and an angle adjusting component for adjusting the directional rod 7, during stirring, the directional rod 7 is kept in an inclined state by operating the angle adjusting component, and during injection, the directional rod 7 is kept in a vertical state, the surface of the piston rod 4 is provided with an external spline groove 8, the groove wall of the external spline groove 8 is slidably sleeved with an internal spline sleeve 9, the surface of the internal spline sleeve 9 is fixedly and axially connected with a connecting plate 10, the surface of the connecting plate 10 is fixedly connected with a supporting plate 11, the surface of the directional rod 7 is slidably sleeved with a sleeve block 12, the surface of the sleeve block 12 is hinged with a rack plate 13, the surface of the supporting plate 11 is provided with a groove for the rack plate 13 to pass through and be slidably connected, the surface of the internal spline sleeve 9 is fixedly connected with a gear 14 meshed with the rack plate 13, when the directional rod 7 keeps an inclined state, the rack plate 13 moves up and down back and forth through the support plate 11 and is sleeved with the arrangement of the directional rod 7 in the inclined state in a sliding manner through the sleeve block 12, so that the rack plate 13 moves left and right back and forth relative to the support plate 11, the gear 14 is driven to rotate back and forth through the left and right back and forth movement of the rack plate 13, the piston rod 4 and the piston plate 3 are driven to rotate back and forth while moving back and forth in a small range through the back and forth movement of the gear 14, the fixed relation between the gear 14 and the internal spline sleeve 9 and the sliding sleeved relation between the internal spline sleeve 9 and the external spline groove 8, and then the contrast agent in the injection tube 1 can be disturbed; when the orientation rod 7 is kept in a vertical state, the orientation rod 7 is in a vertical state, so that the movement of the rack plate 13 is limited, the rotation of the gear 14 can be limited by limiting the movement of the rack plate 13, the rotation of the piston rod 4 and the piston plate I3 is limited by limiting the rotation of the gear 14 due to the fixed relation between the gear 14 and the inner spline sleeve 9 and the sliding sleeve relation between the inner spline sleeve 9 and the outer spline groove 8, so that when an operator pushes the push-pull plate 15, the piston plate I3 only moves axially, the condition that when the piston plate I3 rotates, the contrast agent is driven to generate a vortex, and the contrast agent in the vortex state enters a human body is avoided, the injection device is characterized in that the discomfort of a human body possibly caused is improved, the safety of injection is improved, the push-pull plate 15 is connected to the lower surface of the piston rod 4 in a fixed-axis rotating mode, the spring I16 is sleeved on the surface of the piston rod 4, two end parts of the spring I16 are respectively abutted to the opposite sides of the supporting plate 11 and the push-pull plate 15, the supporting plate 11 can move up and down back and forth through elastic tension provided by the spring I16 in the process of pushing the push-pull plate 15 back and forth in a small range, the supporting plate 11 abuts against the lower surface of the injection cylinder 1, and the push-pull plate 15 can continuously move towards the direction of the injection cylinder 1 by utilizing the compressibility of the spring I16 so as to extrude the contrast agent in the injection cylinder 1.

In this embodiment, as shown in fig. 1, 4 and 5, the heating member includes a liquid storage container 17 fixedly connected to a lower surface of the injection tube 1, a piston plate 18 is slidably connected to an inner wall of the liquid storage container 17, a spring 19 is commonly and fixedly connected between the piston plate 18 and the liquid storage container 17, the rack plate 13 is located at a side of the piston plate 18, a heating pipe 20 is fixedly connected to an inner wall of the liquid storage container 17, two circulation pipes 21 are commonly and fixedly connected between the injection tube 1 and the heating pipe 20, a check valve 22 is disposed on each of the two circulation pipes 21, when the rack plate 13 reciprocates left and right, the piston plate 18 reciprocates left and right through elastic tension provided by the spring 19, the heat conduction liquid 6 between the injection tube 1 and the heat conduction pipe 5 circulates through the liquid storage container 17, and when the heat conduction liquid 6 circulates through the liquid storage container 17, the heat conduction pipe 20 heats the circularly flowing liquid 6.

In this embodiment, as shown in fig. 1, 4 and 5, the imaging device further includes a ring plate 23 rotatably connected to the inner wall of the heat conducting pipe 5 in a fixed axis manner, a disturbance rod 24 is fixedly connected to the upper surface of the ring plate 23, a second opening is formed in the surface of the first piston plate 3, the second opening is used for the disturbance rod 24 to pass through and be slidably connected to the first opening, the first piston plate 3 rotates in a reciprocating manner, and the first piston plate 3 and the disturbance rod 24 are slidably connected to each other in a sleeved manner, so that the ring plate 23 and the disturbance rod 24 rotate in a reciprocating manner, and the disturbance rod 24 penetrates through the contrast medium, so that the stirring dead angle is reduced, and the contrast medium is stirred acutely, fully and uniformly.

In this embodiment, as shown in fig. 1, 4 and 5, the angle adjusting component includes a connecting seat 25 fixedly connected to the lower surface of the injection tube 1, a rotating shaft 26 is rotatably connected to a surface dead axle of the connecting seat 25, a surface of the rotating shaft 26 is fixedly connected to one end of the orientation lever 7, a worm wheel 27 is fixedly connected to a surface of the rotating shaft 26, a worm 28 connected to the worm wheel 27 is rotatably connected to a lower surface dead axle of the injection tube 1, the worm wheel 27 and the rotating shaft 26 are driven to rotate by operating the worm 28, the rotation shaft 26 is fixed to the orientation lever 7, and then the inclination angle of the orientation lever 7 can be controlled by twisting the handle 30, and the adjusted orientation lever 7 can be fixed by self-locking after transmission between the worm 28 and the worm wheel 27.

In this embodiment, as shown in fig. 1, 4 and 5, a cover 29 is fixedly connected to the lower end of the syringe 1, and the cover 29 is disposed to cover the components at the bottom of the syringe 1, thereby improving the aesthetic property of the injection device while ensuring the above-mentioned effective effects.

In this embodiment, as shown in fig. 1, 4 and 5, a handle 30 is fixedly connected to a lower end of the worm 28, so that an operator can operate the worm 28 to rotate by covering and twisting the handle 30.

In this embodiment, as shown in fig. 1, 4 and 5, the heat conducting liquid 6 is heat conducting oil, which has a better heat transfer efficiency, so as to conveniently and rapidly and uniformly transfer the heat generated by the heating pipe 20 to the contrast medium in the syringe 1.

Referring to fig. 1 to 6, the present invention provides an injection method: a method for injecting clinical contrast agent for cardiovascular medicine comprises the following steps:

s1: inserting the injection needle 2 into a container storing contrast medium, then drawing a part of the contrast medium into the injection tube 1 by pulling the piston rod 4, and then upwards moving the injection needle 2;

s2: the piston rod 4 is pushed and pulled back and forth in a small range, and the piston plate I3 can be driven to reciprocate in a small range through the switching part and simultaneously rotate in a reciprocating manner, so that the contrast agent is uniformly dispersed;

s3: after the contrast agent is stirred, the piston plate I3 enters a moving state only by operating the switching part, then the piston rod 4 is pushed upwards, the air in the injection tube 1 is exhausted, the injection needle 2 is inserted into the corresponding position of the skin of a patient, and the piston rod 4 is pushed continuously, so that the sparse and heated contrast agent can be slowly pushed into the human body.

The working principle is as follows: when the clinical contrast injection device for the cardiovascular department is used, the injection needle 2 is inserted into a container containing contrast medium, then a part of the contrast medium is extracted into the injection tube 1 by pulling the push-pull plate 15, and then the injection needle 2 is upwards and starts to the state shown in figure 1;

because the contrast agent is statically placed in the container for a long time, after the contrast agent is extracted, the contrast agent in the syringe 1 is viscous, the pushing resistance of the piston plate I3 is large during injection, and further, as shown in fig. 1 and 4, an operator pushes and pulls the push-pull plate 15 to and fro in a small range, and in the process, the support plate 11 moves back and forth up and down through the elastic tension provided by the spring I16, the support plate 11 moves back and forth up and down, and the rack plate 13 moves back and forth left and right relative to the support plate 11 through the arrangement of the orientation rod 7 in an inclined state in a sliding sleeved mode through the sleeve block 12, and the rack plate 13 moves back and forth left and right to drive the gear 14 to rotate back and forth, and the gear 14 rotates back and forth and drives the piston rod 4 and the piston plate I3 to reciprocate up and down in a small range through the fixed relationship between the gear 14 and the inner spline sleeve 9 and the sliding sleeved relationship between the inner spline sleeve 9 and the outer spline groove 8 to rotate back and forth, so that the contrast agent in the syringe 1 can be disturbed and uniformly dispersed, and the injection can be injected through pushing the piston plate I3;

the first piston plate 3 rotates in a reciprocating manner, and the first piston plate 3 and the disturbing rod 24 are in sliding sleeved connection, so that the ring plate 23 and the disturbing rod 24 are driven to rotate in a reciprocating manner, the disturbing rod 24 penetrates through the contrast medium, the stirring dead angle is reduced, and the contrast medium is stirred vigorously, fully and uniformly;

before the push-pull plate 15 is pushed and pulled in a small range, the worm 28 can be driven to rotate by twisting the handle 30, the worm wheel 27 and the rotating shaft 26 are driven to rotate by rotating the worm 28, the rotating shaft 26 is fixed with the directional rod 7, and further, the inclination angle of the directional rod 7 can be controlled by twisting the handle 30, so that when an operator applies the same push-pull acting force to the push-pull plate 15, the reciprocating transverse moving distance of the rack plate 13 can be increased due to the change of the inclination angle of the directional rod 7, the reciprocating rotation speed of the piston plate I3 and the disturbance rod 24 can be increased, the same acting force is applied, the stirring efficiency is improved by adjusting the inclination angle of the directional rod 7, and the stirring process of the contrast agent in different viscous states can be adapted under the condition of relative labor saving;

while stirring, the rack plate 13 reciprocates left and right, and the elastic tension provided by the second spring 19 makes the second piston plate 18 reciprocate left and right, the second piston plate 18 reciprocates left and right, and the flow direction of the liquid is limited by the two one-way valves 22, so that the heat-conducting liquid 6 between the injection tube 1 and the heat-conducting tube 5 circularly flows through the liquid storage container 17, when the heat-conducting liquid 6 circularly flows through the liquid storage container 17, the heat-conducting liquid 6 after heating can transfer heat to the heat-conducting tube 5, and the heat-conducting tube 5 transfers heat to the contrast medium, so that the comfort of a patient is improved during injection;

because the heat conducting liquid 6 circularly flows, the heated heat conducting liquid 6 can uniformly transfer heat to the heat conducting pipe 5, and the pain of a patient caused by overhigh local temperature in the contrast medium during injection is avoided;

the piston plate I3 reciprocates up and down in a small range, so that the contrast agent also reciprocates up and down in a small range, and the contrast agent can be fully contacted with the inner wall of the heat conducting pipe 5, and the heat exchange efficiency is improved;

after the contrast agent is stirred, the handle 30 is reversely twisted, so that the orientation rod 7 rotates to a vertical state and reaches a state shown in fig. 5, at the moment, an operator firstly pushes the push-pull plate 15 upwards to discharge air in the injection tube 1, then the injection needle 2 is inserted into a corresponding position of the skin of a patient, and then the push-pull plate 15 is continuously pushed, so that the sparse and heated contrast agent can be slowly pushed into the human body, in the process, the orientation rod 7 is in the vertical state, further, the movement of the rack plate 13 is limited, the rotation of the gear 14 can be similarly limited by limiting the movement of the rack plate 13, the gear 14 and the inner spline sleeve 9 are in a fixed relation, the inner spline sleeve 9 and the outer spline groove 8 are in a sliding sleeve connection relation, further, the rotation of the gear 14 is limited, the piston rod 4 and the piston plate 3 are also limited, when the operator pushes the push-pull plate 15, the piston plate 3 only moves axially, the situation that the contrast agent is driven to generate eddy current when the piston plate 3 rotates, the contrast agent in the eddy current state enters the human body, and the safety of injection is improved.

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

1. The utility model provides a clinical radiography injection device that cardiovascular internal medicine used, includes injection cylinder (1), syringe needle (2) and piston board (3), the lower fixed surface of piston board (3) is connected with piston rod (4), the lower surface of injection cylinder (1) is offered and is used for piston rod (4) to pass and sliding connection's opening one, its characterized in that: the heat-conducting tube type injection device comprises an injection tube (1), a heat-conducting tube (5) fixedly connected to the inner wall of the injection tube (1), a heating component for driving the heat-conducting liquid (6) to circularly flow and heat up, and a switching component for enabling a piston plate I (3) to rotate and move or only move when a piston rod (4) moves, wherein the heating component is in transmission connection with the switching component;

the switching component comprises a directional rod (7) and an angle adjusting component for adjusting the directional rod (7), an outer spline groove (8) is formed in the surface of the piston rod (4), an inner spline sleeve (9) is sleeved on the groove wall of the outer spline groove (8) in a sliding mode, a connecting plate (10) is connected to the surface of the inner spline sleeve (9) in a fixed-axis rotating mode, a supporting plate (11) is fixedly connected to the surface of the connecting plate (10), a sleeve block (12) is sleeved on the surface of the directional rod (7) in a sliding mode, a rack plate (13) is hinged to the surface of the sleeve block (12), a groove used for the rack plate (13) to penetrate through and be connected in a sliding mode is formed in the surface of the supporting plate (11), and a gear (14) meshed with the rack plate (13) is fixedly connected to the surface of the inner spline sleeve (9);

the heating part comprises a liquid storage container (17) fixedly connected to the lower surface of the injection tube (1), the inner wall of the liquid storage container (17) is slidably connected with a second piston plate (18), the second piston plate (18) and a second spring (19) fixedly connected between the liquid storage container (17) together, the rack plate (13) is located on the lateral side of the second piston plate (18), a heating tube (20) is fixedly connected to the inner wall of the liquid storage container (17), two circulating circulation tubes (21) are fixedly connected between the injection tube (1) and the heating tube (20) together, and one-way valves (22) are arranged on the circulating circulation tubes (21).

2. The cardiovascular medical clinical imaging injector of claim 1, wherein: the lower surface of the piston rod (4) is fixedly connected with a push-pull plate (15) in a rotating mode, a first spring (16) is sleeved on the surface of the piston rod (4), and two ends of the first spring (16) are respectively abutted to the opposite sides of the supporting plate (11) and the push-pull plate (15).