Medical imaging auxiliary device

Abstract

The present invention relates to the field of contrast-assisted technology, and more specifically discloses a medical contrast-assisted device, comprising a lifting mechanism, an elastic reset device is arranged below the lifting mechanism, a high-pressure syringe is arranged on one side of the lifting mechanism, a liquid introduction component is arranged inside the high-pressure syringe, the liquid introduction component is connected to a filter barrel below, a displacement sensor is arranged in the middle of the lifting mechanism, the lifting mechanism comprises an upper base plate, a guide rail is fixedly connected to the bottom of the upper base plate, and a guide groove is opened on the surface of the guide rail. The present invention is conducive to utilizing the patient's real-time weight to compress the spring, utilizing the relationship that the corresponding compression amount of the spring is proportional to the gravity, and then determining the patient's real-time weight through the displacement sensor's perception of the displacement of the elastic reset device, thereby realizing the determination of the appropriate dose of contrast agent.

Description

Technical Field

[0001] The present invention relates to the field of imaging assistance technology, and more particularly to a medical imaging assistance device. Background Art

[0002] Contrast agents are chemicals injected (or taken) into human tissues or organs to enhance imaging observation. These agents have a higher or lower density than surrounding tissues and can form a clear contrast in imaging examinations, thereby helping doctors to more clearly observe the internal structure and pathological conditions of the human body. Contrast agents play a vital role in medical diagnosis. In order to improve the efficiency and safety of the imaging process, reduce the workload of medical staff, and enhance the patient's examination experience, the design demand for medical imaging auxiliary devices has emerged.

[0003] Medical contrast-assisted devices are generally composed of supporting structures, contrast agent delivery systems, radiation protection systems, adjustment and control systems, monitoring and alarm systems, etc. In the preparation stage, medical staff first check the equipment and notify the patient to prepare and prepare the contrast agent. Then, in the contrast agent stage, they set the parameters, connect the pipeline and start the injection. In the inspection and observation stage, they perform contrast examinations and monitor patient reactions. Finally, in the closing and follow-up treatment stage, the injection is completed, the follow-up treatment is recorded and reported.

[0004] At present, commonly used medical imaging auxiliary devices generally determine the dosage of contrast agents in advance based on the patient's weight, liver and kidney function. While waiting for surgery, the patient's weight may change significantly under the influence of certain diseases. At this time, the dosage of contrast agents determined in advance is not accurate enough. Too much contrast agent may cause liver or kidney damage, and too little contrast agent may affect the examination results. In addition, if an emergency occurs during the imaging process and the imaging is terminated prematurely, the recovery of the contrast agent needs to be manual, and the contrast agent is not recovered in time, especially the unstable contrast agent. The contrast agent with poor stability will undergo physical property changes such as stratification, precipitation, and crystallization, as well as chemical property changes such as oxidation, hydrolysis, and degradation when it stays in the imaging device for a long time. It will be very inconvenient to recycle the contrast agent, and it will even affect the cleaning of the imaging device. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a medical imaging auxiliary device to solve the problems existing in the above-mentioned background technology.

[0006] The present invention provides the following technical solution: a medical imaging auxiliary device, comprising a lifting mechanism, an elastic reset device is provided below the lifting mechanism, a high-pressure injector is provided on one side of the lifting mechanism, a liquid introduction component is provided inside the high-pressure injector, and a filter barrel is connected below the liquid introduction component;

[0007] The lifting mechanism comprises an upper base plate, the bottom of the upper base plate is fixedly connected with a guide rail, the surface of the guide rail is provided with a guide groove, a first hinge shaft is slidably connected inside the guide groove, the middle of the first hinge shaft is hinged with the upper end of the hinge rod, the middle of the hinge rod is hinged with the second hinge shaft, the lower end of the hinge rod is hinged with the guide rail, and the guide rail is fixedly connected to the upper surface of the lower base plate;

[0008] The elastic reset device comprises a limiting cylinder, the bottom of which is fixedly connected to the upper surface of the lower bottom plate, the limiting cylinder is barrel-shaped, the barrel mouth of the limiting cylinder is slidably connected to a top platform, and a spring is sandwiched between the top platform and the limiting cylinder;

[0009] The liquid introduction component includes a motor, the motor is rotatably connected to a second gear, one side of the second gear is meshedly connected to a third gear, the third gear is keyed to one end of a screw, a bracket is provided at the bottom of the third gear, the bracket is rotatably connected to the screw, the screw is helically connected to a slider, the inside of the slider is slidably connected to a guide rod, the top of the slider is fixedly connected to a pressure sensor, the outer surface of the slider is provided with an arch-shaped infusion hole, and the arch-shaped infusion hole has two states: one is connected to the inner cavity of the high-pressure syringe, and the other is not connected to the inner cavity of the high-pressure syringe;

[0010] Furthermore, the bottom of the high-pressure injector is connected to the filter barrel, the bottom of the high-pressure injector is fixedly connected to the lifting mechanism, a filter plate is provided inside the filter barrel, and a displacement sensor is provided in the middle of the lifting mechanism.

[0011] Furthermore, the high-pressure injector comprises an injection syringe, a needle is provided at the top of the injection syringe, a needle hole is passed through between the needle and the injection syringe, an injection port is passed through the upper side wall of the injection syringe, and a plug is provided at the top of the injection port.

[0012] Furthermore, the inner cavity of the injection syringe is movably sealed and connected with a push head, the lower side wall of the injection syringe is provided with a through hole for through connection, the periphery of the through hole is provided with a ring, the ring is fixedly and seamlessly connected to the outer wall of the injection syringe, the outer side of the lower end of the ring is provided with an external thread, and the lower end of the ring is threadedly connected with a screw cap.

[0013] Furthermore, the lifting mechanism includes a rack, a side surface of the rack is fixedly connected to a connecting rod, one end of the connecting rod is fixedly connected to a high-pressure syringe, a guide rod is slidably connected in the middle of the rack, one side of the rack is meshingly connected to a first gear, a hand crank is fixedly connected in the middle of the first gear, the hand crank is zigzag-shaped, and a support is rotatably connected to the connection between the hand crank and the first gear.

[0014] Furthermore, the slider includes a block body and a block head, a through threaded hole is opened on the top of the slider, a through guide hole is opened on one side of the threaded hole, a bow-shaped infusion hole is opened on the side wall of the slider, the bow-shaped infusion hole is bow-shaped, the upper part of the bow-shaped infusion hole is connected to the side wall of the block head, and the lower part of the bow-shaped infusion hole is connected to the side wall of the block body.

[0015] Furthermore, the filter plate includes a plate body, a surface of the plate body is penetrated with filter holes, and buckle blocks are arranged around the plate body.

[0016] Furthermore, the filter barrel includes a barrel body, a barrel cover is provided on the top of the barrel body, a snap-fitting groove matching with the snap-fitting block is opened on the inner wall of the barrel body, a stirring fan is provided at the bottom of the barrel body, and a drainage pipe is provided on the bottom side wall of the barrel body.

[0017] Technical effects and advantages of the present invention:

[0018] 1. The present invention is provided with a lifting mechanism, an elastic reset device and a displacement sensor, which is conducive to utilizing the patient's real-time weight to compress the spring, utilizing the relationship that the corresponding compression amount of the spring is proportional to the gravity it receives, and then determining the patient's real-time weight by sensing the displacement of the elastic reset device through the displacement sensor, thereby realizing the determination of the appropriate dose of the contrast agent.

[0019] 2. The present invention is provided with a liquid introduction component and a pressure sensor, which is advantageous for utilizing the abnormal blood vessel pressure in the patient's body to cause abnormal pressure inside the high-pressure syringe, which is then sensed by the pressure sensor, and the contrast fluid is drawn out and recovered when the liquid introduction component is connected to the inside of the high-pressure syringe by utilizing the fluidity of the liquid itself. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 It is a cross-sectional view of the overall structure of the present invention.

[0022] Figure 3 It is a cross-sectional view of the overall structure of another position of the present invention.

[0023] Figure 4 It is a schematic diagram of the overall structure from another angle of the present invention.

[0024] Figure 5 It is a schematic structural diagram of the liquid introduction component of the present invention.

[0025] Figure 6 For the present invention Figure 3 Schematic diagram of the enlarged structure at a.

[0026] Figure 7 It is a schematic diagram of the slider structure of the present invention.

[0027] Figure 8 It is a schematic diagram of the filter plate structure of the present invention.

[0028] Fig. 9 It is a schematic diagram of the filter barrel structure of the present invention.

[0029] Fig.10 It is a control flow chart of the present invention.

[0030] The accompanying drawings are marked as follows: 1. lifting mechanism; 101. upper base plate; 102. guide rail; 103. first hinge axis; 104. hinge rod; 105. second hinge axis; 106. lower base plate; 2. elastic reset device; 201. limit cylinder; 202. top platform; 203. spring; 3. high-pressure syringe; 301. injection syringe; 302. push head; 303. injection port; 304. plug; 305. through port; 306. collar; 307. screw cap; 308. needle; 309. needle hole; 4. lifting mechanism; 401. rack; 402. guide rod; 403. first gear; 404. hand crank Rod; 405, support; 406, connecting rod; 5, filter barrel; 501, barrel cover; 502, barrel body; 503, snap-fit ​​groove; 504, drain pipe; 505, stirring fan; 6, displacement sensor; 7, liquid introduction component; 701, motor; 702, second gear; 703, third gear; 704, guide rod; 705, bracket; 706, screw; 707, slider; 708, guide hole; 709, threaded hole; 7010, bow-shaped infusion hole; 7011, block body; 7012, block head; 8, pressure sensor; 9, filter plate; 901, plate body; 902, filter hole; 903, snap-fit ​​block. DETAILED DESCRIPTION

[0031] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are merely illustrative. The medical imaging assisting device involved in the present invention is not limited to the various structures recorded in the following embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0032] Reference Figure 1 and Figure 2 The present invention provides a medical imaging auxiliary device, comprising a lifting mechanism 1, an elastic reset device 2 is provided below the lifting mechanism 1, a high-pressure injector 3 is provided on one side of the lifting mechanism 1, a liquid introduction component 7 is provided inside the high-pressure injector 3, and a filter barrel 5 is connected below the liquid introduction component 7;

[0033] The lifting mechanism 1 includes an upper base plate 101, a guide rail 102 is fixedly connected to the bottom of the upper base plate 101, a guide groove is provided on the surface of the guide rail 102, a first hinge shaft 103 is slidably connected inside the guide groove, the middle of the first hinge shaft 103 is hinged to the upper end of a hinge rod 104, the middle of the hinge rod 104 is hinged to a second hinge shaft 105, the lower end of the hinge rod 104 is hinged to the guide rail 102, and the guide rail 102 is fixedly connected to the upper surface of the lower base plate 106;

[0034] The elastic reset device 2 includes a limiting cylinder 201, the bottom of which is fixedly connected to the upper surface of the lower bottom plate 106, the limiting cylinder 201 is barrel-shaped, the barrel mouth of the limiting cylinder 201 is slidably connected to a top platform 202, and a spring 203 is sandwiched between the top platform 202 and the limiting cylinder 201;

[0035] The liquid introduction component 7 includes a motor 701, the motor 701 is rotatably connected to a second gear 702, one side of the second gear 702 is meshedly connected to a third gear 703, the third gear 703 is keyed to one end of a screw 706, a bracket 705 is provided at the bottom of the third gear 703, the bracket 705 is rotatably connected to the screw 706, the screw 706 is helically connected to a slider 707, the outer surface of the slider 707 is provided with an arch-shaped infusion hole 7010, the arch-shaped infusion hole 7010 has two states, one is connected to the inner cavity of the high-pressure syringe 3, and the other is not connected to the inner cavity of the high-pressure syringe 3;

[0036] In this embodiment, it should be specifically explained that the opening of the actual arc-shaped infusion hole 7010 is very large, and the contrast solution flows in very quickly.

[0037] The main difference between this embodiment and the prior art is that this embodiment uses the corresponding relationship between the compression amount of the spring 203 and the patient's weight to achieve the real-time measurement of the patient's weight and the real-time determination of the contrast fluid, and uses the obvious change in the pressure inside the contrast fluid felt by the pressure sensor 8 to pass the unused contrast fluid into the interior of the filter barrel 5 through the liquid introduction component 7 for recovery, which specifically includes the lifting mechanism 1, the elastic reset device 2, and the liquid introduction component 7;

[0038] The above structure is the main structure of this embodiment, which solves the problem that manual recovery is not timely and unstable contrast fluid is prone to physical and chemical changes and is difficult to recover. Motor 701 is an existing structure, and the specific structure and connection method of motor 701 are not described in detail in this embodiment.

[0039] Reference Figure 3The bottom of the high-pressure injector 3 is connected to the filter barrel 5, and the bottom of the high-pressure injector 3 is fixedly connected to the lifting mechanism 4. The high-pressure injector 3 includes an injection syringe 301, a needle 308 is provided at the top of the injection syringe 301, a needle hole 309 is passed through the needle 308 and the injection syringe 301, an injection port 303 is connected through the upper side wall of the injection syringe 301, a plug 304 is provided on the top of the injection port 303, a push head 302 is movably sealedly connected to the inner cavity of the injection syringe 301, a through-hole 305 is provided on the lower side wall of the injection syringe 301, a collar 306 is provided on the periphery of the through-hole 305, the collar 306 is fixedly and seamlessly connected to the outer wall of the injection syringe 301, an external thread is provided on the outer side of the lower end of the collar 306, and a screw cap 307 is threadedly connected to the lower end of the collar 306.

[0040] In this embodiment, it is necessary to specifically explain that: when the high-pressure injector 3 is connected to the filter barrel 5, the contrast fluid inside the high-pressure injector 3 enters the filter barrel 5 for filtration. When the patient suffers pain or discomfort due to the high or low height of the high-pressure injector 3, the height of the high-pressure injector 3 is adjusted by adjusting the lifting mechanism 4. When pressure is applied to the push head 302, the contrast fluid flows into the human body through the needle 308. When the bow-shaped infusion hole 7010 is connected to the inner cavity of the high-pressure injector 3.

[0041] Reference Figure 4-Figure 6 The lifting mechanism 4 includes a rack 401, a side of the rack 401 is fixedly connected to a connecting rod 406, one end of the connecting rod 406 is fixedly connected to the high-pressure injector 3, a guide rod 402 is slidably connected in the middle of the rack 401, a first gear 403 is meshedly connected to one side of the rack 401, a hand crank 404 is fixedly connected in the middle of the first gear 403, the hand crank 404 is zigzag-shaped, and a support 405 is rotatably connected at the connection between the hand crank 404 and the first gear 403.

[0042] In this embodiment, it should be specifically explained that: if the patient feels uncomfortable or painful due to the height of the high-pressure syringe 3, if the height of the high-pressure syringe 3 is too high, the medical staff rotates the hand crank 404, and the hand crank 404 drives the first gear 403 connected to the hand crank 404 key to rotate, and the rack 401 meshing with the first gear 403 moves downward under the guidance of the guide rod 402, driving the connecting rod 406 fixedly connected to the rack 401 to move downward, and the high-pressure syringe 3 also moves downward accordingly, paying close attention to the patient's feelings, and stopping rotating the hand crank 404 when the patient feels well. If the height of the high-pressure syringe 3 is too low, the medical staff rotates the hand crank 404 in the opposite direction to achieve the upward movement of the high-pressure syringe 3.

[0043] Reference Figure 7The slider 707 includes a block body 7011 and a block head 7012. A through threaded hole 709 is opened on the top of the slider 707, and a through guide hole 708 is opened on one side of the threaded hole 709. A bow-shaped infusion hole 7010 is opened on the side wall of the slider 707. The bow-shaped infusion hole 7010 is bow-shaped, and the upper part of the bow-shaped infusion hole 7010 is connected to the side wall of the block head 7012, and the lower part of the bow-shaped infusion hole 7010 is connected to the side wall of the block body 7011.

[0044] In this embodiment, it is necessary to specifically explain that: when the slider 707 moves toward the inside or outside of the high-pressure syringe 3, the slider 707 relies on the spiral transmission connection between the threaded hole 709 and the screw 706, and the slider 707 is controlled not to rotate. The guide hole 708 only makes linear motion under the guidance of the guide rod 704. When the slider 707 rises to the upper part of the arch-shaped infusion hole 7010 and is connected with the inside of the high-pressure syringe 3, the contrast fluid will enter the lower part through the upper part of the arch-shaped infusion hole 7010, and then gradually enter the screw cap 307, and finally flow into the interior of the filter barrel 5.

[0045] Reference Figure 8 The filter plate 9 includes a plate body 901 , a filter hole 902 is penetrated on the surface of the plate body 901 , and a buckle block 903 is provided around the plate body 901 .

[0046] In this embodiment, it is necessary to specifically explain that: when unused contrast fluid enters the top of the plate body 901 and gradually accumulates, the suspended matter and impurities are intercepted above the plate body 901 under the filtering action of the filter hole 902. After the filtering is completed, the filter plate 9 is taken out and cleaned through the snap-fitting part between the snap-fitting block 903 and the filter barrel 5.

[0047] Reference Fig. 9 The filter barrel 5 includes a barrel body 502, a barrel cover 501 is provided on the top of the barrel body 502, a buckling groove 503 matched with the buckling block 903 is opened on the inner wall of the barrel body 502, a stirring fan 505 is provided at the bottom of the barrel body 502, and a drainage pipe 504 is provided on the bottom side wall of the barrel body 502.

[0048] In this embodiment, it is necessary to specifically explain that: the sewage is further purified after being collected by the drain pipe 504, clean water is injected into the interior of the filter barrel 5, and the stirring fan 505 is started to stir the clean water to clean the interior of the filter barrel 5. After a suitable period of time, the stirring fan 505 is stopped, and the sewage is discharged through the drain pipe 504. The cleaned filter plate 9 is placed through the buckling groove 503, and the barrel cover 501 is buckled, waiting for the next radiography.

[0049] Working principle of the present invention:

[0050] The main problem solved by this embodiment is: using the corresponding relationship between the compression amount of the spring 203 and the patient's weight, the real-time measurement of the patient's weight and the real-time determination of the contrast fluid are realized, and the pressure inside the contrast fluid sensed by the pressure sensor 8 has obviously changed, and the unused contrast fluid is passed into the interior of the filter barrel 5 through the liquid introduction component 7 for recovery, thereby solving the problem of difficulty in contrast fluid recovery caused by unstable properties of the contrast fluid and untimely manual recovery.

[0051] The specific steps are as follows:

[0052] First, during the radiography process, the patient lies on the upper base plate 101, and the patient's weight is pressed on the upper base plate 101, and the weight is transferred from the upper base plate 101 to the top platform 202, and the force of the top platform 202 is transferred to the spring 203, the spring 203 is compressed, the top platform 202 descends, and the upper base plate 101 supported by the top platform 202 also descends. The descent of the upper base plate 101 causes the first hinge shaft 103 at the upper end to move toward the outer side of the upper base plate 101 through the guidance of the guide rail 102, and the second hinge shaft 105 also descends accordingly, and the lower end of the hinge rod 104 also moves toward the outer side of the upper base plate 101 through the guidance of the guide rail 102 until the spring 2 The deformation force generated by the deformation of 03 reaches a balance with the patient's weight, and the upper base plate 101 is stationary. At this time, the displacement sensor 6 senses the change in the displacement of the upper base plate 101. The contrast agent intelligent control system determines the contrast agent dosage according to the changed value. The contrast agent dosage is determined according to the patient's weight, liver and kidney function, and allergy history, and the same dose of contrast agent is injected into the injection syringe 301 through the injection port 303. After the injection is completed, the hose is connected to the needle 308, and then the hose is connected to the appropriate body position of the patient to provide the required injection pressure to the push head 302, and the contrast agent is injected into the human body to start imaging;

[0053] During the angiography process, if the patient feels uncomfortable or painful due to the height of the high-pressure syringe 3, if the height of the high-pressure syringe 3 is too high, the medical staff rotates the hand crank 404, and the hand crank 404 drives the first gear 403 connected to the hand crank 404 to rotate, and the rack 401 meshing with the first gear 403 moves downward under the guidance of the guide rod 402, driving the connecting rod 406 fixedly connected to the rack 401 to move downward, and the high-pressure syringe 3 also moves downward accordingly, paying close attention to the patient's feelings, and stopping rotating the hand crank 404 when the patient feels well. If the height of the high-pressure syringe 3 is too low, the medical staff rotates the hand crank 404 in the opposite direction to realize the upward movement of the high-pressure syringe 3;

[0054] When the pressure sensor 8 does not sense the pressure change, the angiography process proceeds normally. When the patient undergoes cholangiography and encounters bile duct obstruction, the pressure in the bile duct rises sharply. The pressure inside the high-pressure injector 3 is too high or the blood vessel ruptures, causing the contrast agent to leak out of the blood vessel. The pressure inside the high-pressure injector 3 will drop, and the pressure sensor 8 will sense the pressure change. The control system receives the signal from the pressure sensor 8, and the injection pressure provided to the push head 302 disappears. The motor 701 rotates forward, and the motor 701 drives the second gear 702 connected to the motor 701 to rotate, and the third gear 703 meshing with the second gear 702 rotates. The screw 706 meshingly connected with the third gear 703 rotates, and the slider 707 connected with the screw 706 in a spiral transmission moves upward under the guidance of the guide rod 704. When the upper end of the bow-shaped infusion hole 7010 is connected with the interior of the high-pressure syringe 3, the contrast liquid begins to be recovered, and the unused contrast liquid enters the interior of the collar 306 through the bow-shaped infusion hole 7010, and then enters the interior of the filter barrel 5 through the opening of the screw cap 307. When the value of the pressure sensor 8 decreases to the set value, the contrast liquid in the high-pressure syringe 3 is exhausted, and the control system receives the signal from the pressure sensor 8, controls the motor 701 to reverse, drives the slider 707 to descend, and the slider 707 returns to its original position;

[0055] When the unused contrast fluid enters the interior of the filter barrel 5, it first passes through the plate body 901 and then is filtered through the filter hole 902. The filtered impurities remain on the plate body 901. The contrast fluid that has been initially filtered enters the bottom of the filter barrel 5 and is then collected through the drain pipe 504 for further purification. The used filter plate 9 moves along the outer side of the snap-fit ​​block 903 and is picked up to clean the impurities on the filter plate 9. Clean water is injected into the interior of the filter barrel 5, and the stirring fan 505 is started to stir the clean water to clean the interior of the filter barrel 5. After an appropriate period of time, the stirring fan 505 is stopped and the sewage is discharged through the drain pipe 504. The cleaned filter plate 9 is placed through the snap-fit ​​groove 503, and the barrel cover 501 is buckled to wait for the next contrast.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A medical imaging auxiliary device, comprising a lifting mechanism (1), characterized in that: An elastic reset device (2) is provided inside the lifting mechanism (1), a high-pressure injector (3) is provided on one side of the lifting mechanism (1), a liquid introduction component (7) is provided inside the high-pressure injector (3), and the bottom of the liquid introduction component (7) is connected to the filter barrel (5); The lifting mechanism (1) comprises an upper base plate (101), the bottom of the upper base plate (101) is fixedly connected to a guide rail (102), the surface of the guide rail (102) is provided with a guide groove, a first hinge shaft (103) is slidably connected inside the guide groove, the middle part of the first hinge shaft (103) is hinged to the upper end of a hinge rod (104), the middle part of the hinge rod (104) is hinged to a second hinge shaft (105), the lower end of the hinge rod (104) is hinged to the guide rail (102), and the guide rail (102) is fixedly connected to the upper surface of the lower base plate (106); The elastic reset device (2) comprises a limiting cylinder (201), the bottom of which is fixedly connected to the upper surface of the lower bottom plate (106), the limiting cylinder (201) is barrel-shaped, the barrel mouth of the limiting cylinder (201) is slidably connected to a top platform (202), and a spring (203) is sandwiched between the top platform (202) and the limiting cylinder (201); The liquid introduction component (7) comprises a motor (701), the motor (701) is rotatably connected to a second gear (702), one side of the second gear (702) is meshingly connected to a third gear (703), the third gear (703) is key-connected to one end of a screw rod (706), a bracket (705) is provided at the bottom of the third gear (703), the bracket (705) is rotatably connected to the screw rod (706), the screw rod (706) is helically connected to a slider (707), the inside of the slider (707) is slidably connected to a guide rod (704), the top of the slider (707) is fixedly connected to a pressure sensor (8), the outer surface of the slider (707) is provided with an arch-shaped infusion hole (7010), the arch-shaped infusion hole (7010) has two states: one is connected to the inner cavity of the high-pressure syringe (3), and the other is not connected to the inner cavity of the high-pressure syringe (3); The motor (701) rotates forward, and the motor (701) drives the second gear (702) key-connected to the motor (701) to rotate, and the third gear (703) meshingly connected to the second gear (702) rotates, and the screw (706) meshingly connected to the third gear (703) rotates, and the slider (707) helically connected to the screw (706) moves upward under the guidance of the guide rod (704). When the upper end of the bow-shaped infusion hole (7010) is connected to the interior of the high-pressure syringe (3), unused contrast fluid will enter the interior of the filter barrel (5) through the bow-shaped infusion hole (7010).

2. A medical imaging auxiliary device according to claim 1, characterized in that: The lower part of the high-pressure injector (3) is connected to a filter barrel (5), the lower part of the high-pressure injector (3) is fixedly connected to a lifting mechanism (4), a filter plate (9) is provided inside the filter barrel (5), and a displacement sensor (6) is provided in the middle of the lifting mechanism (1).

3. A medical imaging auxiliary device according to claim 2, characterized in that: The high-pressure injector (3) comprises an injection syringe (301), a needle (308) is provided at the top end of the injection syringe (301), a needle hole (309) is formed between the needle (308) and the injection syringe (301), an injection port (303) is formed through the upper side wall of the injection syringe (301), and a plug (304) is provided at the top of the injection port (303).

4. A medical imaging auxiliary device according to claim 3, characterized in that: The inner cavity of the injection syringe (301) is movably sealedly connected to a push head (302); the lower side wall of the injection syringe (301) is provided with a through hole (305) for through connection; a collar (306) is provided on the periphery of the through hole (305); the collar (306) is fixedly and seamlessly connected to the outer wall of the injection syringe (301); the lower end of the collar (306) is provided with an external thread on the outer side; the lower end of the collar (306) is threadedly connected to a screw cap (307).

5. The medical imaging auxiliary device according to claim 2, characterized in that: The lifting mechanism (4) comprises a rack (401), the side of the rack (401) is fixedly connected to a connecting rod (406), one end of the connecting rod (406) is fixedly connected to a high-pressure injector (3), the middle of the rack (401) is slidably connected to a guide rod (402), one side of the rack (401) is meshingly connected to a first gear (403), the middle of the first gear (403) is fixedly connected to a hand crank (404), the hand crank (404) is zigzag-shaped, and a support (405) is rotatably connected to the connection between the hand crank (404) and the first gear (403).

6. The medical imaging auxiliary device according to claim 1, characterized in that: The slider (707) comprises a block body (7011) and a block head (7012); a through threaded hole (709) is formed on the top of the slider (707); a through guide hole (708) is formed on one side of the threaded hole (709); a bow-shaped infusion hole (7010) is formed on the side wall of the slider (707); the bow-shaped infusion hole (7010) is in the shape of a bow; the upper part of the bow-shaped infusion hole (7010) is connected to the side wall of the block head (7012); and the lower part of the bow-shaped infusion hole (7010) is connected to the side wall of the block body (7011).

7. A medical imaging auxiliary device according to claim 2, characterized in that: The filter plate (9) comprises a plate body (901), a filter hole (902) is penetrated through the surface of the plate body (901), and buckle blocks (903) are provided around the plate body (901).

8. The medical imaging auxiliary device according to claim 2, characterized in that: The filtering barrel (5) comprises a barrel body (502); a barrel cover (501) is provided on the top of the barrel body (502); a buckling groove (503) matching with a buckling block (903) is provided on the inner wall of the barrel body (502); a stirring fan (505) is provided on the bottom of the barrel body (502); and a drainage pipe (504) is provided on the bottom side wall of the barrel body (502).

Images