Automatic injection device

Abstract

The present invention relates to an automatic injection device, comprising a first branch pipe assembly and a second branch pipe assembly, the two are connected by a first connecting pipe, and the second branch pipe assembly is connected to a second connecting pipe at one end away from the first connecting pipe; each first branch pipe is provided with an installation module for installing a liquid medicine container; a first bubble detection module for detecting the state of the liquid medicine container and the air condition; a first liquid stop valve for controlling the circulation of liquid medicine inside the first branch pipe; a second bubble detection module for detecting the circulation of liquid medicine and the air condition in the first connecting pipe is provided on the first connecting pipe; each second branch pipe is provided with a second liquid stop valve, a diaphragm injection module for pumping and pumping liquid medicine, and a third liquid stop valve in sequence; the second connecting pipe is provided with a third bubble detection module and a one-way valve for preventing and controlling liquid medicine from flowing back. The automatic injection device does not need to frequently replace consumables, reduces costs, and has high infusion efficiency, and can serve more patients.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to an automatic injection device. Background Art

[0002] In clinical practice, CT enhanced scans in tertiary hospitals often require appointments because it takes too long for the hospital to complete a CT enhanced scan, resulting in a limited number of patients who can undergo enhanced angiography in a day. In order to improve the efficiency of enhanced angiography, high-pressure injectors are used as essential equipment for enhanced angiography. Improving the working efficiency of high-pressure injectors can improve the efficiency of enhanced angiography.

[0003] At present, high-pressure syringes are used for enhanced angiography, which requires consumables such as syringes, connecting tubes, indwelling needles or intravenous infusion needles. Moreover, after each patient is completed, the next patient needs to undergo enhanced angiography, which requires the replacement of syringes, connecting tubes, indwelling needles or intravenous infusion needles, and the need to re-inhale the medicine and exhaust the air, etc., which is inefficient and consumes a large amount of consumables. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an automatic injection device.

[0005] The technical solution adopted by the present invention to solve the technical problem is: construct an automatic injection device, including a first branch pipe assembly and a second branch pipe assembly, the two are connected by a first connecting pipe, and the second branch pipe assembly is connected to the second connecting pipe at one end away from the first connecting pipe; the first branch pipe assembly includes at least two first branch pipes connected in parallel, and the second branch pipe assembly includes at least two second branch pipes connected in parallel;

[0006] Each of the first branch pipes is provided with an installation module for installing a liquid medicine container; a first bubble detection module for detecting the state of the liquid medicine container and the air condition in the first branch pipe; and a first liquid stop valve for controlling the flow of liquid medicine in the first branch pipe;

[0007] The first connecting tube is provided with a second bubble detection module for detecting the circulation of the liquid medicine and the air condition in the first connecting tube;

[0008] Each of the second branch pipes is provided with a second liquid stop valve, a diaphragm injection module for pumping and delivering liquid medicine, and a third liquid stop valve in sequence;

[0009] The second connecting pipe is provided with a third bubble detection module for detecting the circulation of the medicinal liquid and the air condition in the second connecting pipe, and a one-way valve for preventing the medicinal liquid from flowing back.

[0010] Preferably, the installation module comprises a puncture member for puncturing the drug liquid container so that the drug liquid in the drug liquid container enters the first branch tube.

[0011] Preferably, the liquid medicine includes bottled liquid medicine and / or bagged liquid medicine, and the liquid medicine container includes a medicine bottle and / or a medicine bag;

[0012] Each of the first branch pipes is also provided with a heater for heating the medicine bottle and / or medicine bag.

[0013] Preferably, the diaphragm injection module comprises a pump body, a diaphragm disposed in the pump body; and a driving assembly for driving the diaphragm to move;

[0014] The driving assembly includes a cylinder, a piston disposed inside the cylinder, and a piston rod that can be telescoped in and out of the cylinder and connected to the piston. One end of the piston rod extends into the pump body and is connected to the diaphragm. The piston drives the piston rod to move to drive the diaphragm to move.

[0015] Preferably, it also includes an injection control module connected to the diaphragm injection module and used to control the working state of the diaphragm injection module and thereby adjust the injection rate and dosage of the liquid medicine.

[0016] Preferably, the second connecting tube is also provided with a pressure sensor for detecting the infusion pressure.

[0017] Preferably, the end of the second connecting tube is connected to an external infusion tube for infusing fluid into a patient.

[0018] Preferably, the first bubble detection module, the second bubble detection module, and the second bubble detection module are infrared sensors or ultrasonic sensors.

[0019] Preferably, the device further comprises a controller connected to the first liquid stop valve, the second liquid stop valve and the third liquid stop valve for controlling the opening degrees thereof.

[0020] Preferably, at least one of the liquid medicines is a contrast agent; and at least another liquid medicine is physiological saline.

[0021] The implementation of the present invention has the following beneficial effects: the automatic injection device of the present invention does not need to frequently replace consumables, thus reducing costs, and has high infusion efficiency, and can serve more patients within a certain period of time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0023] Figure 1 is a schematic structural diagram of an automatic injection device according to an embodiment of the present invention;

[0024] Figure 2 is a schematic structural diagram of an automatic injection device according to another embodiment of the present invention;

[0025] Figure 3 It is a structural schematic diagram of the diaphragm injection module of the present invention. DETAILED DESCRIPTION

[0026] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific embodiments of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "up", "down", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inside", "outside", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings, are constructed and operated in a specific direction, and are only for the convenience of describing the present technical solution, rather than indicating that the device or element referred to must have a specific direction, and therefore cannot be understood as a limitation to the present invention.

[0027] It should also be noted that, unless otherwise clearly specified and limited, the terms such as "installed", "connected", "connected", "fixed", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there may be one or more intermediate elements. The terms "first", "second", "third", etc. are only for the convenience of describing the present technical solution, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third", etc. can explicitly or implicitly include one or more of the features. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0028] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present invention.

[0029] like Figure 1 As shown, an automatic injection device of the present invention comprises a first branch pipe assembly 1 and a second branch pipe assembly 3 , which are connected via a first connecting pipe 2 , and an end of the second branch pipe assembly 3 away from the first connecting pipe 2 is connected to a second connecting pipe 4 .

[0030] The first branch pipe assembly 1 includes at least two first branch pipes connected in parallel. In this embodiment, it includes three first branch pipes, such as Figure 1 As shown in FIG, it includes a first branch pipe 11, a first branch pipe 12, and a first branch pipe 13. Of course, it is understandable that two first branch pipes, four first branch pipes, etc. connected in parallel may also be provided, and the number thereof may be selected and provided according to the requirements, and is not specifically limited here.

[0031] Furthermore, each first branch pipe is provided with an installation module for installing a liquid medicine container, such as installation module 14 , installation module 15 , and installation module 16 .

[0032] Furthermore, the installation module includes a puncture member for puncturing the liquid medicine container so that the liquid medicine in the liquid medicine container enters the first branch tube, and in this embodiment, includes puncture members 142, puncture members 152, and puncture members 162. Of course, the number of the puncture members can match the number of the first branch tubes.

[0033] The medicine liquid in this embodiment includes bottled medicine liquid and / or bagged medicine liquid, and the medicine liquid container includes a medicine bottle and / or a medicine bag. The puncture member punctures the medicine bottle and / or the medicine bag to make the medicine liquid flow into the first branch tube to perform exhaust or infusion work.

[0034] In this embodiment, at least one liquid medicine is a contrast medium, and at least another liquid medicine is physiological saline. For example, the first branch tube 11 and the first branch tube 12 are installed and flow through the contrast medium, and the third branch tube 13 is installed and flow through the contrast medium and physiological saline.

[0035] Furthermore, a bracket or frame may be included, and the liquid medicine container is hung or fixed on the bracket or frame. In some embodiments, a positioning plate may be provided, such as Figure 1 The medicine bottles can be installed on the positioning plates 141, 15, 161, etc.

[0036] Furthermore, each of the first branch tubes is also provided with a heater for heating the medicine bottle and / or medicine bag, and the heater may be a heating leather cover wrapped around the outer periphery of the medicine bottle and / or medicine bag, and the heating leather cover may be a cloth strip structure, with Velcro or other fastening mechanisms provided at both ends of the cloth strip, and the cloth strip structure surrounds the medicine bottle and / or medicine bag and is locked by Velcro or other fastening mechanisms. Of course, it may also be a whole sleeve structure, which is directly sleeved around the outer periphery of the medicine bottle and / or medicine bag.

[0037] The heating leather case is equipped with a temperature control board and a heating resistor connected to it. The heater can be controlled to keep the temperature within a preset temperature range, thereby controlling the temperature of the medicine so that the temperature of the medicine is within a more suitable range, thereby avoiding the impact of low-temperature medicine on blood vessels, etc., so as to improve the patient's clinical experience.

[0038] Furthermore, the heater can also be a heating strip, which is sleeved on the infusion pipeline, such as the first branch tube, and / or the second branch tube, and / or the first connecting tube 2, and / or the second connecting tube 4, to heat the liquid medicine flowing in the infusion pipeline.

[0039] The first branch pipe assembly 1 also includes a first bubble detection module for detecting the state of the liquid medicine container and the air condition in the first branch pipe. In this embodiment, it includes a first bubble detection module 17 , a first bubble detection module 18 , and a first bubble detection module 19 .

[0040] And the first liquid stop valve for controlling the flow of the liquid medicine inside the first branch pipe, in this embodiment, includes the first liquid stop valve 110, the first liquid stop valve 111, and the first liquid stop valve 112. In some embodiments, instead of setting a separate liquid stop valve on each first branch, a solenoid valve A is set at the connection between the first branch assembly 1 and the first connecting pipe 2, and the solenoid valve A can control the conduction of the branch or close it completely. It can be understood that as long as the conduction of different first branches can be controlled, different valve assemblies can be selected according to needs, and no specific limitation is made here.

[0041] In this embodiment, the second branch pipe assembly 3 includes at least two second branch pipes connected in parallel, such as a second branch pipe 31 and a second branch pipe 32. It is understandable that three second branch pipes, four second branch pipes, etc. can also be provided, and the number can be selected and set according to actual needs, and is not specifically limited here.

[0042] Furthermore, each second branch pipe is sequentially provided with a second liquid stop valve, a diaphragm injection module for pumping and delivering the liquid medicine, and a third liquid stop valve.

[0043] For example, the second branch pipe 31 is provided with a second liquid stop valve 33, a diaphragm injection module 35 and a third liquid stop valve 37 in sequence, and the second branch pipe 32 is provided with a second liquid stop valve 34, a diaphragm injection module 36 and a third liquid stop valve 38 in sequence. In some embodiments, instead of providing a separate liquid stop valve on each second branch, a solenoid valve B is provided at the connection between the first connecting pipe 2 and the second branch assembly 3, and the solenoid valve B can control the conduction of the branch, such as controlling the liquid medicine to enter the second branch pipe 31 (while the second branch pipe 32 is closed) or the second branch pipe 32 (while the second branch pipe 31 is closed);

[0044] Furthermore, a solenoid valve C can be set at the connection between the second branch assembly 3 and the second connecting pipe 4, and the solenoid valve C can control the conduction of the branch, such as controlling the liquid medicine to enter the second connecting pipe 4 from the second branch pipe 31 (while the second branch pipe 32 is closed) or to enter the second connecting pipe 4 from the second branch pipe 32 (while the second branch pipe 31 is closed).

[0045] It can be understood that as long as the conduction of different second branches can be controlled, different valve components can be selected according to needs, and no specific limitation is made here.

[0046] like Figure 2 As shown, in the present embodiment, taking the diaphragm injection module 35 as an example, it includes a pump body 3511, a diaphragm 3512 arranged in the pump body 3511, and a driving component 352 for driving the diaphragm 3512 to move. The driving component 352 includes a cylinder 3521, a piston arranged inside the cylinder 3521, and a piston rod 3522 that can be telescopically moved in and out of the cylinder 3521 and connected to the piston. One end of the piston rod 3522 extends into the pump body 3511 and is connected to the diaphragm 3512. The piston drives the piston rod 3522 to move to drive the diaphragm 3512 to move.

[0047] It is understandable that the pump body 3511 is provided with an inner cavity for containing and circulating the liquid medicine, and a diaphragm 3512 is provided on one side of the inner cavity. The driving component 352 drives the diaphragm 3512 to be concave or convex to pump or pump the liquid medicine. It is understandable that the driving component 352 can be a liquid cylinder, an air cylinder or a driving motor, etc., and the diaphragm injection module can be set according to actual needs.

[0048] Furthermore, it also includes an injection control module connected to the diaphragm injection module 35, which is used to control the working state of the diaphragm injection module 35 and thus adjust the injection rate and dosage of the liquid medicine. Specifically, the injection control module is connected to the drive component 352, and controls the speed of movement of the diaphragm 3512 by controlling the drive component 352, thereby adjusting the injection rate and dosage of the liquid medicine.

[0049] Furthermore, the injection control module includes but is not limited to a microprocessor, a microcontroller, a digital signal processor, a microcomputer, a central processing unit, a field programmable gate array, a programmable logic device, a state machine, a logic circuit, an analog circuit, a digital circuit and / or any device based on an operation instruction operation signal (analog and / or digital). It can adopt mature control schemes such as the main control MCU on the market, or be improved or innovatively designed according to needs, which will not be described in detail here.

[0050] Furthermore, the automatic injection device is provided with a communication module, which is connected to the injection control module and the user terminal to receive a control signal from the user terminal to control the operation of the injection control module. Furthermore, the communication module can be a WIFI module, a Bluetooth module, a 3G / 4G / 5G and a Zigbee module, etc., which can be selected according to actual needs. The user terminal is a monitoring system of a nurse station, or one or more of a mobile phone, a tablet computer, a laptop computer, a PDA, a PAD, a smart watch, and a smart bracelet.

[0051] It also includes a storage module connected to the injection control module and used to store data. The storage module may include: a flash drive, a read-only memory (ROM), an electronically erasable rewritable read-only memory (EEPROM), and a random access memory (RAM).

[0052] It also includes a reminder module connected to the injection control module, which is used to send out an alarm signal when the infusion work is about to be completed or an abnormality occurs during the infusion process (such as the bubble detection module detects bubbles). The reminder module can be an optical device, and the optical device can be an LED, such as flashing when the infusion work is completed. Of course, the LED can be an RGBW lamp bead, which flashes different lights according to the remaining capacity of the infusion container. For example, if the remaining liquid volume is less than 20%, the red light flashes. Of course, the reminder module can also be a honey device 214, or a vibration motor, etc., as long as it plays a reminder function, it is not specifically limited here.

[0053] Furthermore, the first connecting tube 2 is provided with a second bubble detection module 21 for detecting the circulation of the liquid medicine and the air condition in the first connecting tube 2 .

[0054] The second connecting pipe 4 is provided with a third bubble detection module 43 for detecting the flow of the liquid medicine and the air condition in the second connecting pipe 4 , and a one-way valve 44 for preventing the liquid medicine from flowing back.

[0055] The second connecting tube 4 is also provided with a pressure sensor 42 for detecting the infusion pressure, which can detect the system pressure in real time to prevent excessive pressure from causing harm to the human body. The pressure sensor 42 is connected to the aforementioned injection control module to receive relevant control signals or transmit the collected pressure data to the injection control module.

[0056] Furthermore, the end of the second connecting tube 4 is connected to an external infusion tube for infusing fluids into the patient.

[0057] In this embodiment, the first bubble detection module, the second bubble detection module 21, and the third bubble detection module 43 are infrared sensors or ultrasonic sensors. Of course, suitable sensors can also be selected according to actual needs, and no specific limitation is made here. Further, the first bubble detection module, the second bubble detection module 21, and the third bubble detection module 43 are all connected to the aforementioned injection control module to send the detection data to the injection control module, and the injection control module processes and judges the data and receives the control signal from the injection control module.

[0058] Furthermore, it also includes a controller connected to the first stop liquid valve (110, 111, 112), the second stop liquid valve (33, 34) and the third stop liquid valve (37, 38) for controlling their openings. The controller may be the above-mentioned injection control module, which controls the switch and opening of the stop liquid valve, and further controls the opening and closing of the infusion of the liquid medicine, or the size of the infusion dosage. Furthermore, the stop liquid valve may also be replaced by a two-way valve.

[0059] In this embodiment, the automatic injection device has the following working process:

[0060] All bubble detection modules detect the air status in the infusion line;

[0061] The first liquid stop valve 110 is open, the first liquid stop valve 111 and the first liquid stop valve 112 are closed, the second liquid stop valve 33 is closed, and the third liquid stop valve 37 is open; the second liquid stop valve 34 is open, and the third liquid stop valve 38 is closed;

[0062] The liquid medicine installed on the first branch tube 11 and the first branch tube 12 is a contrast medium, and the liquid medicine installed on the first branch tube 13 is physiological saline;

[0063] The diaphragm injection module 35 and the diaphragm injection module 36, one is ready to suck the medicine, and the other is ready to inject, and the two movements are opposite;

[0064] Start the injection control module and / or the controller. At this time, the diaphragm injection module 35 and the diaphragm injection module 36 start to move respectively. The diaphragm injection module 35 starts to inject and the diaphragm injection module 36 starts to absorb medicine. The two movements are just opposite. When the diaphragm injection module 35 is in the process of injection, the second liquid stop valve 33 is closed and the third liquid stop valve 37 is opened. When the diaphragm injection module 36 is in the process of injection, the second liquid stop valve 34 is closed and the third liquid stop valve 38 is opened. When the diaphragm injection module 35 is in the process of absorbing medicine, the third liquid stop valve 37 is closed and the second liquid stop valve 33 is opened. When the diaphragm injection module 36 is in the process of injection, the third liquid stop valve 38 is closed and the second liquid stop valve 34 is opened.

[0065] Further, the contrast agent on the first branch pipe 11 is transmitted from top to bottom to the second bubble detection module 21, the first liquid stop valve 110 is opened, the first liquid stop valve 111 and the first liquid stop valve 112 are closed, and the second bubble detection module 21 detects a change from no bubbles to bubbles;

[0066] The contrast agent on the first branch pipe 12 is transmitted from top to bottom to the second bubble detection module 21, the first liquid stop valve 110 is closed, the first liquid stop valve 111 is opened, and the first liquid stop valve 112 is closed, and the second bubble detection module 21 detects a change from no bubble to bubble, and finally to no bubble;

[0067] The saline on the first branch pipe 13 is transmitted from top to bottom to the second bubble detection module 21, the first liquid stop valve 112 is opened, the first liquid stop valve 110 and the first liquid stop valve 111 are closed, and the second bubble detection module 21 changes from having bubbles to having no bubbles, then turns to having bubbles, and finally becomes having no bubbles, and the gas in the entire infusion line has been exhausted;

[0068] The second connecting tube 4 is connected to the external infusion tube;

[0069] Taking the contrast agent injection on the first branch tube 11 as an example, during the contrast agent injection process, the first stop valve 110 is opened, the first stop valve 111 and the first stop valve 112 are closed, and if the diaphragm injection module 35 performs injection, the second stop valve 33 is closed, and the third stop valve 37 is opened. At the same time, the diaphragm injection module 117 performs drug aspiration, then the second stop valve 34 is opened, and the third stop valve 38 is closed, and both are performed simultaneously. The diaphragm injection module 35 and the diaphragm injection module 36 continuously reciprocate, and the entire system continuously performs injections; when the contrast agent injection task is completed, the physiological saline on the first branch tube 13 is prepared for injection, the first stop valve 110 and the first stop valve 111 are closed, the first stop valve 112 is opened, and the system starts to inject physiological saline.

[0070] If the first bubble detection module 17 detects bubbles during the injection process, after waiting for the injection task to be completed, the medical staff will first disconnect the connection between the external infusion tube and the patient, and then replace the contrast agent on the first branch tube 11. After replacing the new medicine bottle, the injection control module controls the stop valve and the diaphragm injection module to work, first exhausting the gas to the second bubble detection module 21, and then close the first stop valve 110 and the first stop valve 111, open the first stop valve 112, and use saline to exhaust the air in the infusion line (because saline is cheaper than contrast agent, so saline is used to exhaust the air) until the one-way valve 44, so that the next injection task can be prepared.

[0071] After the patient has completed the enhanced angiography, he only needs to replace the external infusion tube, press the exhaust key (connect and control the injection control module), connect the indwelling needle or intravenous infusion needle, and finally wait for the injection. The one-way valve 44 is set to prevent the drug flow from flowing back. Therefore, replacing the infusion consumables will not contaminate the drug in the infusion line, and the hygiene of the entire infusion process is guaranteed.

[0072] The automatic injection device of the present invention does not require frequent replacement of consumables, thus reducing costs, and has high infusion efficiency, thereby being able to serve more patients.

[0073] It can be understood that the above embodiments only express the preferred implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the present invention. It should be pointed out that, for ordinary technicians in this field, the above technical features can be freely combined without departing from the concept of the present invention, and several deformations and improvements can be made, which all belong to the protection scope of the present invention. Therefore, all equivalent changes and modifications made to the scope of the claims of the present invention should belong to the coverage of the claims of the present invention.

Claims

1. An automatic injection device, characterized in that: The invention comprises a first branch pipe assembly and a second branch pipe assembly, the two are connected by a first connecting pipe, and the second branch pipe assembly is connected to the second connecting pipe at one end away from the first connecting pipe; the first branch pipe assembly comprises at least two first branch pipes connected in parallel, and the second branch pipe assembly comprises at least two second branch pipes connected in parallel; Each of the first branch pipes is provided with an installation module for installing a liquid medicine container, a first bubble detection module for detecting the state of the liquid medicine container and the air condition in the first branch pipe, and a first liquid stop valve for controlling the flow of liquid medicine in the first branch pipe; The first connecting tube is provided with a second bubble detection module for detecting the circulation of the liquid medicine and the air condition in the first connecting tube; Each of the second branch pipes is provided with a second liquid stop valve, a diaphragm injection module for pumping and pumping liquid medicine, and a third liquid stop valve in sequence; wherein the second liquid stop valve is arranged between the first connecting pipe and the diaphragm injection module, and the third liquid stop valve is arranged between the diaphragm injection module and the second connecting pipe; The second connecting pipe is provided with a third bubble detection module for detecting the circulation of the liquid medicine and the air condition in the second connecting pipe, and a one-way valve for preventing the liquid medicine from flowing back; The automatic injection device also includes an injection control module connected to the diaphragm injection module and used to control the working state of the diaphragm injection module and thus adjust the injection rate and dosage of the liquid medicine, and a controller connected to the first liquid stop valve, the second liquid stop valve and the third liquid stop valve and used to control the opening thereof; The injection control module is configured to control one diaphragm injection module and the second diaphragm injection module of all the diaphragm injection modules to alternately perform drug inhalation and injection operations; The controller is configured to control one of the first liquid-stop valves to be opened and the other first liquid-stop valves to be closed during drug inhalation; The controller is also configured to control the second liquid stop valve of the second branch pipe at the diaphragm injection module to open and the third liquid stop valve to close when any diaphragm injection module needs to inhale medicine, and to control the second liquid stop valve of the second branch pipe at the diaphragm injection module to close and the third liquid stop valve to open when any diaphragm injection module needs to be injected.

2. The automatic injection device according to claim 1, characterized in that: The installation module includes a puncture member for puncturing the drug liquid container so that the drug liquid in the drug liquid container enters the first branch tube.

3. The automatic injection device according to claim 2, characterized in that: The liquid medicine includes bottled liquid medicine and / or bagged liquid medicine, and the liquid medicine container includes a medicine bottle and / or a medicine bag; Each of the first branch pipes is also provided with a heater for heating the medicine bottle and / or medicine bag.

4. The automatic injection device according to claim 1, characterized in that: The diaphragm injection module comprises a pump body, a diaphragm disposed in the pump body; and a driving assembly for driving the diaphragm to move; The driving assembly includes a cylinder, a piston disposed inside the cylinder, and a piston rod that can be telescoped in and out of the cylinder and connected to the piston. One end of the piston rod extends into the pump body and is connected to the diaphragm. The piston drives the piston rod to move to drive the diaphragm to move.

5. The automatic injection device according to claim 1, characterized in that: The second connecting tube is also provided with a pressure sensor for detecting the infusion pressure.

6. The automatic injection device according to claim 1, characterized in that: The end of the second connecting tube is connected to an external infusion tube for infusing fluid into a patient.

7. The automatic injection device according to claim 1, characterized in that: The first bubble detection module, the second bubble detection module, and the second bubble detection module are infrared sensors or ultrasonic sensors.

8. The automatic injection device according to claim 1, characterized in that: At least one of the liquid medicines is a contrast agent; and at least another liquid medicine is physiological saline.

Images