Ultrasonic contrast injection device

Abstract

The utility model provides an ultrasonic contrast injection device, relates to the technical field of medical instruments, and provides an ultrasonic contrast injection device, which comprises a host PCBA (Printed Circuit Board Assembly) and at least two functional module assemblies, and the at least two functional module assemblies respectively comprise at least one PCBA module and at least two devices, in each functional module assembly, the device is connected with the PCBA module; and the PCBA module is connected with the host PCBA assembly through a wire harness.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to an ultrasonic contrast injection device. Background Art

[0002] The current ultrasound contrast injection device involves multiple functions, and the connection lines of many functional devices (power switch, LED indicator, speaker, sensor, etc.) are directly connected from the device to the main control PCBA board.

[0003] When there are many connecting wires and all the wires need to be connected to the main control PCBA, the wiring harness will appear very messy inside the device and cause assembly difficulties. In severe cases, the wires may even become entangled with each other, which may easily cause the connector to fall off or the PCBA to short-circuit. In addition, a messy wiring harness will affect the spatial layout of the device structure, causing space shortages and requiring a larger size for the device to complete the structural design. Utility Model Content

[0004] The utility model aims to provide an ultrasound contrast injection device to alleviate the technical problem of messy internal wiring of the ultrasound contrast injection device.

[0005] In a first aspect, the utility model provides an ultrasound contrast injection device, comprising: a host PCBA assembly and at least two functional module assemblies, wherein at least two of the functional module assemblies each comprise at least one PCBA module and at least two devices, and in each of the functional module assemblies, the device is connected to the PCBA module;

[0006] The PCBA module is connected to the host PCBA assembly through a wiring harness.

[0007] Furthermore, the ultrasound contrast injection device comprises a shell and a cover, the shell is provided with an opening, and the cover is used to open and close the opening;

[0008] At least one of the functional module assemblies is a first functional module assembly, one of the components in the first functional module assembly is a pivot mechanism, the pivot mechanism is mounted on the bottom plate of the shell, the cover body is connected to the movable end of the pivot mechanism, and the pivot mechanism can drive the cover body to open or close the opening.

[0009] Further, one of the components in the first functional module assembly is a blood pressure module, and the blood pressure module is connected to the housing;

[0010] And / or, the shaft mechanism is connected to the housing through a first base, the bottom of the first base is connected to the housing, the shaft mechanism is connected to the top of the first base, the PCBA module of the first functional module assembly is a first PCBA module, and the first PCBA module is installed on the top of the first base;

[0011] And / or, one of the devices in the first functional module assembly is a first photoelectric sensor, which is used to limit the initial position of the cover body; one of the devices in the first functional module assembly is a second photoelectric sensor, which is used to limit the maximum rotation angle of the cover body.

[0012] Furthermore, at least one of the functional module assemblies is a second functional module assembly, two of the devices in the second functional module assembly are push-pull modules, and the push-pull modules are used to push and pull the push-pull rod of the syringe to complete the production of the contrast agent or inject it into the human body.

[0013] Further, the push-pull module includes a screw module, a third photoelectric sensor and a fourth photoelectric sensor, and the third photoelectric sensor and the fourth photoelectric sensor are used to limit the maximum and minimum stroke positions of the screw module respectively;

[0014] And / or, the push-pull module includes a thrust sensor, and the thrust sensor is used to detect the magnitude of the force applied to the syringe;

[0015] And / or, the PCBA module of the second functional module assembly is a second PCBA module, and the second PCBA module is mounted on the bottom surface of the housing of the ultrasound contrast injection device.

[0016] Furthermore, at least one functional module assembly is a third functional module assembly, and one of the devices in the third functional module assembly is a three-way module, and the three-way module is used to control the connection and closing between syringes.

[0017] Further, the three-way module includes a three-way valve, a fifth photoelectric sensor, a micro switch and a drive motor;

[0018] The driving motor is connected to the three-way valve and is used to drive the three-way valve to rotate so as to control the connection and closing between the syringes;

[0019] The fifth photoelectric sensor is used to detect the rotation direction of the three-way valve;

[0020] The micro switch is used to detect whether the syringe is placed in place.

[0021] Further, at least one of the functional module components is a fourth functional module component, and the PCBA module in the fourth functional module component is a fourth PCBA module;

[0022] One of the devices in the fourth functional module assembly is a switch, and the switch is used to turn on and off the ultrasound contrast injection device;

[0023] And / or, one of the components in the fourth functional module assembly is a cooling fan, and the cooling fan is used to dissipate heat from the internal structure of the housing of the ultrasound contrast injection device;

[0024] And / or, one of the devices in the fourth functional module assembly is a power supply;

[0025] And / or, one of the devices in the fourth functional module assembly is a display screen magnetic attraction plate, and the display screen magnetic attraction plate is used to adsorb the display screen onto the ultrasound contrast injection device by magnetic attraction;

[0026] And / or, one of the devices in the fourth functional module assembly is a handle magnetic plate, and the handle magnetic plate is used to adsorb the handle onto the ultrasound angiography injection device by magnetic attraction.

[0027] Further, at least one functional module assembly is a fifth functional module assembly, and the PCBA module in the fifth functional module assembly is a fifth PCBA module;

[0028] One of the devices in the fifth functional module assembly is a bubble sensor, and the bubble sensor is used to detect whether there is air in the liquid pipeline of the syringe;

[0029] And / or, one of the devices in the fifth functional module assembly is an indicator light;

[0030] And / or, one of the devices in the fifth functional module assembly is a blood oxygen module, and the blood oxygen module is used to detect whether there is blood in the liquid pipeline of the syringe.

[0031] Further, the host PCBA assembly includes a first PCBA board, a second PCBA board, a connecting card board, a limiting stud, a screw and a nut;

[0032] One end of the limiting stud has a threaded section with a diameter smaller than that of the limiting stud, and the other end has a screw hole;

[0033] The limiting stud is located between the first PCBA board and the second PCBA board, the threaded section passes through the hole of the second PCBA board and is connected to the nut, and the screw passes through the hole of the first PCBA board and is connected to the screw hole;

[0034] The second PCBA board is connected to the metal base plate via a connecting card.

[0035] The utility model has at least the following advantages or beneficial effects:

[0036] The ultrasonic contrast injection device provided by the utility model comprises: a host PCBA assembly and at least two functional module assemblies, wherein at least two of the functional module assemblies each comprise at least one PCBA module and at least two devices, wherein in each of the functional module assemblies, the device is connected to the PCBA module; and the PCBA modules are connected to the host PCBA assembly via a wiring harness.

[0037] In the functional module assembly, the device and its corresponding PCBA module are first connected through a wiring harness. That is to say, the devices close to the PCBA module are connected through a wiring harness to form a functional module assembly. Then, the wiring harness is led out through the PCBA module in the functional module assembly to connect with the host PCBA assembly, thereby reducing the number of wire connections and the occurrence of confusion. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0039] Figure 1 A schematic diagram of an ultrasound contrast injection device provided in an embodiment of the utility model (excluding the housing and the cover);

[0040] Figure 2 A schematic diagram of another perspective of the ultrasound contrast injection device provided by an embodiment of the utility model (with the housing and the cover removed);

[0041] Figure 3 A schematic diagram of a first functional module assembly of an ultrasound contrast injection device provided in an embodiment of the utility model;

[0042] Figure 4 A schematic diagram of a closed cover of an ultrasound contrast injection device provided by an embodiment of the utility model;

[0043] Figure 5 A schematic diagram of an ultrasound contrast injection device provided by an embodiment of the utility model with its cover opened;

[0044] Figure 6 A schematic diagram of a second functional module assembly of an ultrasound contrast injection device provided in an embodiment of the utility model;

[0045] Figure 7 A schematic diagram of a third functional module assembly of the ultrasound contrast injection device provided in an embodiment of the utility model (without the syringe);

[0046] Figure 8 A schematic diagram of a third functional module assembly of the ultrasound contrast injection device provided in an embodiment of the utility model;

[0047] Fig. 9 A schematic diagram of a fourth functional module assembly of an ultrasound contrast injection device provided in an embodiment of the utility model;

[0048] Fig.10 A schematic diagram of another perspective of the fourth functional module assembly of the ultrasound contrast injection device provided by an embodiment of the utility model;

[0049] Fig.11 A schematic diagram of a fifth functional module assembly of the ultrasound contrast injection device provided in an embodiment of the utility model;

[0050] Fig.12 A schematic diagram of a mainframe PCBA assembly of an ultrasound contrast injection device provided by an embodiment of the utility model from one viewing angle;

[0051] Fig.13 A schematic diagram of another viewing angle of the host PCBA assembly of the ultrasound contrast injection device provided in an embodiment of the utility model.

[0052] Icons: 100 - host PCBA assembly; 110 - first PCBA board; 120 - second PCBA board; 130 - connection card; 140 - limit stud; 150 - screw; 160 - nut;

[0053] 200 - first functional module assembly; 210 - shaft mechanism; 220 - blood pressure module; 230 - first bracket; 240 - first base; 250 - first PCBA module; 260 - first photoelectric sensor; 270 - second photoelectric sensor;

[0054] 300 - second functional module assembly; 310 - screw module; 320 - third photoelectric sensor; 330 - fourth photoelectric sensor; 340 - thrust sensor; 350 - second PCBA module;

[0055] 400 - third functional module assembly; 410 - three-way valve; 420 - fifth photoelectric sensor; 430 - micro switch; 440 - speaker; 450 - third PCBA module; 460 - drive motor;

[0056] 500 - fourth functional module assembly; 510 - fourth PCBA module; 520 - switch; 530 - cooling fan; 540 - power supply; 550 - display screen magnetic plate; 560 - handle magnetic plate;

[0057] 600-fifth functional module assembly; 610-fifth PCBA module; 620-bubble sensor; 630-indicator light; 640-blood oxygen module;

[0058] 720 - cover; 730 - syringe; 740 - metal base plate;

[0059] 800 - housing. DETAILED DESCRIPTION

[0060] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model.

[0061] It should be noted that in the description of the present utility model, it should be noted that the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0062] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0063] like Figure 1 As shown, the ultrasound angiography injection device provided by the utility model includes: a host PCBA assembly 100 and at least two functional module assemblies, at least two of the functional module assemblies each include at least one PCBA module and at least two devices, in each of the functional module assemblies, the device is connected to the PCBA module; the PCBA modules are connected to the host PCBA assembly 100 through a wiring harness.

[0064] In the functional module assembly, the device and its corresponding PCBA module are first connected through a wiring harness, that is, the devices close to the PCBA module are connected through a wiring harness to form a functional module assembly, and then the wiring harness is led out through the PCBA module in the functional module assembly to connect with the host PCBA assembly 100, thereby reducing the number of wire connections and the occurrence of confusion.

[0065] Specifically, in this embodiment, Figure 1 and Figure 2 As shown, a total of five groups of functional module components are provided in the system, namely, a first functional module component 200, a second functional module component 300, a third functional module component 400, a fourth functional module component 500 and a fifth functional module component 600. In each functional module component, the components therein are arranged according to the proximity principle, that is, the components with a relatively close distance are arranged in one functional module component, thereby reducing the total length of the wiring harness.

[0066] Furthermore, it should be noted that each device in the functional module can also be disassembled for easy maintenance.

[0067] For the first functional module assembly 200:

[0068] like Figure 3 - Figure 5 As shown, the ultrasound contrast injection device includes a housing 800 and a cover 720, and each component is installed inside the housing 800. The housing 800 is provided with an opening for taking and placing the syringe 730, and the cover 720 is used to open and close the opening. One of the components in the first functional module assembly 200 is a shaft mechanism 210, and the shaft mechanism 210 is installed on the bottom plate of the housing 800, wherein the bottom plate of the housing 800 is made of metal, which has high strength and is easy to process assembly holes, so that each component is conveniently connected to the metal bottom plate 740.

[0069] The cover 720 is connected to the movable end of the shaft mechanism 210, and the shaft mechanism 210 can drive the cover 720 to flip open or close. The shaft mechanism 210 includes a motor, and the cover 720 is automatically opened and closed by the motor drive.

[0070] Furthermore, one of the devices in the first functional module assembly 200 is a blood pressure module 220, and the blood pressure module 220 is connected to the housing 800 through a first bracket 230. The bottom of the first bracket 230 is connected to the metal base plate 740 by screws, and the blood pressure module 220 is installed on the top of the first bracket 230.

[0071] The hinge mechanism 210 is connected to the housing 800 through the first base 240. The bottom of the first base 240 is connected to the housing 800. The hinge mechanism 210 is connected to the top of the first base 240. The PCBA module of the first functional module assembly 200 is the first PCBA module 250. The first PCBA module 250 is installed on the top of the first base 240. Since the blood pressure module 220 is lifted by the first bracket 230, the blood pressure module 220 is closer to the first PCBA module 250.

[0072] One of the components in the first functional module assembly 200 is a first photoelectric sensor 260, which is mounted on the first base 240. The first photoelectric sensor 260 is used to limit the initial position of the cover 720. One of the components in the first functional module assembly 200 is a second photoelectric sensor 270, which is mounted on the first base 240. The second photoelectric sensor 270 is used to limit the maximum rotation angle of the cover 720. The first photoelectric sensor 260 and the second photoelectric sensor 270 limit the rotation range of the cover 720, so that the cover 720 stops rotating when it rotates to the maximum unfolded position and the initial position.

[0073] Design principle of the first functional module assembly 200: The traditional wiring method is to connect each device to the host PCBA assembly 100. In this process, the length of the wiring harness required for each device is relatively long and messy in the host. Improper assembly may also interfere with the moving parts. Therefore, a first PCBA module 250 is designed on the first base 240 to connect the wiring harness of the rotating shaft mechanism 210, the first photoelectric sensor 260, the second photoelectric sensor 270 and the blood pressure module 220. At this time, all related wiring harnesses are concentrated on the first PCBA module 250, and then a cable is led out from the first PCBA module 250 and connected to the host PCBA assembly 100, thereby optimizing the arrangement of the wire group.

[0074] For the second functional module assembly 300:

[0075] like Figure 6 As shown, two of the devices in the second functional module assembly 300 are push-pull modules, and the two push-pull modules are arranged side by side. The push-pull modules are used to push and pull the push-pull rod of the syringe 730 to complete the production of contrast agent or inject it into the human body. The function of the push-pull module is the main function of the system.

[0076] The push-pull module includes a lead screw module 310 , a third photoelectric sensor 320 and a fourth photoelectric sensor 330 . The third photoelectric sensor 320 and the fourth photoelectric sensor 330 are used to limit the maximum and minimum stroke positions of the lead screw module 310 , respectively.

[0077] The push-pull rod of the syringe 730 is pushed and pulled by the movement of the screw rod to achieve the production or injection of contrast agent into the human body. The third photoelectric sensor 320 and the fourth photoelectric sensor 330 are arranged on the screw rod driving path and are arranged at intervals so that when the push-pull rod of the syringe 730 is pushed to the front and rear limit positions, the screw rod module no longer drives the push-pull rod of the syringe 730.

[0078] The push-pull module includes a thrust sensor 340 , which can be arranged at the movable end of the screw module and located between the screw module and the injection push-pull rod. The thrust sensor 340 is used to detect the force applied to the syringe 730 .

[0079] The PCBA module of the second functional module assembly 300 is a second PCBA module 350, which is mounted on the metal bottom plate 740 of the housing 800. Similarly, the lead screw module 310, the third photoelectric sensor 320 and the fourth photoelectric sensor 330 are all mounted on the metal bottom plate 740.

[0080] The design principle of the second functional module assembly 300 is the same as that of the first functional module assembly 200. The devices therein are first connected to the second PCBA module 350 through a wiring harness, and then the second PCBA module 350 leads out a cable to be connected to the host PCBA assembly 100, thereby optimizing the line group arrangement.

[0081] For the third functional module assembly 400:

[0082] like Figure 7 and Figure 8 As shown, one of the components in the third functional module assembly 400 is a three-way module, which is used to control the connection and closing between the syringes 730. The three-way module is a main component for contrast agent preparation and is one of the basic components of the system.

[0083] Specifically, the three-way module includes a three-way valve 410, a fifth photoelectric sensor 420, a micro switch 430 and a drive motor 460. There are three three-way valves 410, and nine fifth photoelectric sensors 420, and each three-way valve 410 corresponds to three fifth photoelectric sensors 420. There are two micro switches 430, which correspond to two syringes 730 respectively, and there are three reduction motors, which correspond to three three-way valves 410 respectively. The drive motor 460 is connected to the three-way valve 410 to drive the three-way valve 410 to rotate so as to control the connection and closing between the syringes 730. The fifth photoelectric sensor 420 is used to detect the rotation direction of the three-way valve 410 so as to align the syringe 730 with the three-way valve 410. The micro switch 430 is used to detect whether the syringe 730 is placed in place to prevent the syringe 730 from leaking.

[0084] One of the components in the third functional module assembly 400 is a speaker 440, which is used for voice broadcasting information.

[0085] The design principle of the third functional module assembly 400 is the same as that of the first functional module assembly 200. The fifth photoelectric sensor 420, the drive motor 460, and the micro switch 430 are all equipped with wiring harnesses, totaling more than 10 wires. According to conventional thinking, all wires are connected to the host PCBA assembly 100. The wiring harness will appear messy and dense in the host, affecting the assembly and safety stability. Based on this phenomenon, a third PCBA module 450 is added, all the wiring harnesses are connected to the third PCBA module 450, and then 1 or 2 wiring harnesses are led out from this board and connected to the host PCBA assembly 100. The entire third functional module assembly 400 is modularized.

[0086] For the fourth functional module assembly 500:

[0087] like Fig. 9 and Fig.10 As shown, the PCBA module in the fourth functional module assembly 500 is a fourth PCBA module 510; one of the devices in the fourth functional module assembly 500 is a switch 520, and the switch 520 is used to turn on and off the ultrasound contrast injection device.

[0088] One of the components in the fourth functional module assembly 500 is a heat dissipation fan 530 , which is installed on the side wall of the housing 800 . The heat dissipation fan 530 is used to dissipate heat from the internal structure of the housing 800 .

[0089] One of the components in the fourth functional module assembly 500 is a power supply 540, which provides power to the entire system.

[0090] One of the components in the fourth functional module assembly 500 is a display screen magnetic plate 550, which is used to magnetically absorb the display screen onto the ultrasound contrast injection device. One of the components in the fourth functional module assembly 500 is a handle magnetic plate 560, which is used to magnetically absorb the handle onto the ultrasound contrast injection device.

[0091] For the fifth functional module assembly 600:

[0092] like Fig.11 As shown, the PCBA module in the fifth functional module assembly 600 is the fifth PCBA module 610. One of the components in the fifth functional module assembly 600 is a bubble sensor 620, which is used to detect whether there is air in the fluid pipeline of the syringe; one of the components in the fifth functional module assembly 600 is an indicator light 630. One of the components in the fifth functional module assembly 600 is a blood oxygen module 640, which is used to detect whether there is blood in the fluid pipeline of the syringe.

[0093] The design principle of the fourth functional module assembly 500 and the fifth functional module assembly 600: According to conventional thinking, all wires are connected to the host PCBA assembly 100, and the wiring harness inside the host will appear messy and dense, affecting the assembly and safety stability. Based on this phenomenon, a PCBA module is added to each of the two parts of the two shells 800, namely the fourth PCBA module 510 and the fifth PCBA module 610, which are assembled on the shell 800, and all the wiring harnesses are connected to this board, and then 1 or 2 wiring harnesses are led out from this board and connected to the host PCBA assembly 100. The wiring harness group of the entire shell 800 is modularized.

[0094] like Fig.12 and Fig.13 As shown, the host PCBA assembly 100 includes a first PCBA board 110, a second PCBA board 120, a connecting card board 130, a stopper stud 140, a screw 150 and a nut 160; one end of the stopper stud 140 has a threaded section with a diameter smaller than that of the stopper stud 140, and the other end has a screw hole; the stopper stud 140 is located between the first PCBA board 110 and the second PCBA board 120. The threaded section passes through the hole of the first PCBA board 110 and is connected to the nut 160, and the screw 150 passes through the hole of the second PCBA board 120 from the side of the second PCBA board 120 facing away from the first PCBA board 110 and is connected to the screw hole; the second PCBA board 120 is connected to the metal bottom plate 740 through the connecting card board 130.

[0095] Principle of vertical stacking of host PCBA assembly 100: insert the threaded sections of 5 limit studs 140 into the holes of the second PCBA board 120, and fix the limit studs 140 from the back with nuts 160. The first PCBA board 110 is fixed to the limit studs 140 of the second PCBA board 120 with 5 screws 150, and from then on, the first PCBA board 110 and the second PCBA board 120 form a whole; the first PCBA board 110 and the second PCBA board 120 are vertically mounted on the metal bottom plate 740, and two connecting card boards 130 are used to clamp the second PCBA board 120 from the left and right sides, and the screws are locked, and the entire PCBA board vertical stacking structure is completed.

[0096] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. An ultrasound contrast injection device, characterized in that: include: A host PCBA component and at least two functional module components, wherein at least two of the functional module components each include at least one PCBA module and at least two devices, and in each of the functional module components, the device is connected to the PCBA module; The PCBA module is connected to the host PCBA assembly through a wiring harness.

2. The ultrasound contrast injection device according to claim 1, characterized in that: The ultrasound contrast injection device comprises a shell and a cover, the shell is provided with an opening, and the cover is used to open and close the opening; At least one of the functional module assemblies is a first functional module assembly, one of the components in the first functional module assembly is a pivot mechanism, the pivot mechanism is mounted on the bottom plate of the shell, the cover body is connected to the movable end of the pivot mechanism, and the pivot mechanism can drive the cover body to open or close the opening.

3. The ultrasound contrast injection device according to claim 2, characterized in that: One of the components in the first functional module assembly is a blood pressure module, and the blood pressure module is connected to the housing; And / or, the shaft mechanism is connected to the housing through a first base, the bottom of the first base is connected to the housing, the shaft mechanism is connected to the top of the first base, the PCBA module of the first functional module assembly is a first PCBA module, and the first PCBA module is installed on the top of the first base; And / or, one of the devices in the first functional module assembly is a first photoelectric sensor, which is used to limit the initial position of the cover body; one of the devices in the first functional module assembly is a second photoelectric sensor, which is used to limit the maximum rotation angle of the cover body.

4. The ultrasound contrast injection device according to claim 1, characterized in that: At least one of the functional module assemblies is a second functional module assembly, and two of the devices in the second functional module assembly are push-pull modules, which are used to push and pull the push-pull rod of the syringe to complete the production of the contrast agent or inject it into the human body.

5. The ultrasound contrast injection device according to claim 4, characterized in that: The push-pull module includes a screw module, a third photoelectric sensor and a fourth photoelectric sensor, wherein the third photoelectric sensor and the fourth photoelectric sensor are respectively used to limit the maximum and minimum stroke positions of the screw module; And / or, the push-pull module includes a thrust sensor, and the thrust sensor is used to detect the magnitude of the force applied to the syringe; And / or, the PCBA module of the second functional module assembly is a second PCBA module, and the second PCBA module is mounted on the bottom surface of the housing of the ultrasound contrast injection device.

6. The ultrasound contrast injection device according to claim 4, characterized in that: At least one functional module assembly is a third functional module assembly, and one of the devices in the third functional module assembly is a three-way module, and the three-way module is used to control the connection and closing between syringes.

7. The ultrasound contrast injection device according to claim 6, characterized in that: The three-way module includes a three-way valve, a fifth photoelectric sensor, a micro switch and a drive motor; The driving motor is connected to the three-way valve and is used to drive the three-way valve to rotate so as to control the connection and closing between the syringes; The fifth photoelectric sensor is used to detect the rotation direction of the three-way valve; The micro switch is used to detect whether the syringe is placed in place.

8. The ultrasound contrast injection device according to claim 1, characterized in that: At least one of the functional module components is a fourth functional module component, and the PCBA module in the fourth functional module component is a fourth PCBA module; One of the devices in the fourth functional module assembly is a switch, and the switch is used to turn on and off the ultrasound contrast injection device; And / or, one of the components in the fourth functional module assembly is a cooling fan, and the cooling fan is used to dissipate heat from the internal structure of the housing of the ultrasound contrast injection device; And / or, one of the devices in the fourth functional module assembly is a power supply; And / or, one of the devices in the fourth functional module assembly is a display screen magnetic attraction plate, and the display screen magnetic attraction plate is used to adsorb the display screen onto the ultrasound contrast injection device by magnetic attraction; And / or, one of the devices in the fourth functional module assembly is a handle magnetic plate, and the handle magnetic plate is used to adsorb the handle onto the ultrasound angiography injection device by magnetic attraction.

9. The ultrasound contrast injection device according to claim 1, characterized in that: At least one functional module assembly is a fifth functional module assembly, and the PCBA module in the fifth functional module assembly is a fifth PCBA module; One of the devices in the fifth functional module assembly is a bubble sensor, and the bubble sensor is used to detect whether there is air in the liquid pipeline of the syringe; And / or, one of the devices in the fifth functional module assembly is an indicator light; And / or, one of the devices in the fifth functional module assembly is a blood oxygen module, and the blood oxygen module is used to detect whether there is blood in the liquid pipeline of the syringe.

10. The ultrasound contrast injection device according to claim 1, characterized in that: The host PCBA assembly includes a first PCBA board, a second PCBA board, a connecting card board, a limiting stud, a screw and a nut; One end of the limiting stud has a threaded section with a diameter smaller than that of the limiting stud, and the other end has a screw hole; The limiting stud is located between the first PCBA board and the second PCBA board, the threaded section passes through the hole of the second PCBA board and is connected to the nut, and the screw passes through the hole of the first PCBA board and is connected to the screw hole; The second PCBA board is connected to the metal base plate via a connecting card.

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