A device for intravascular treatment to prevent air bubbles from entering the body

Abstract

The present invention discloses a device for preventing bubbles from entering the body during intravascular treatment, and belongs to the technical field of medical consumables. The device comprises an infusion component and a pressure monitoring mechanism, wherein the infusion component comprises a bag body and an infusion tube. The pressure monitoring mechanism in the present invention monitors the weight of the liquid in the liquid storage bag by monitoring the weight of the infusion component. When the value monitored by the pressure monitoring mechanism is equal to or lower than the warning value, the pressure monitoring mechanism can timely close the first valve body and the inflation device on the infusion tube to prevent the liquid in the liquid storage bag from being completely infused and air from entering the delivery pipeline. In addition, the pressure monitoring mechanism can also be used in conjunction with an alarm, which can be an audible and visual alarm or other signal alarm device. When the value monitored by the pressure monitoring mechanism is equal to or lower than the warning value, the audible and visual alarm can emit a buzzer or transmit the alarm information to a mobile device terminal. Upon receiving the alarm, medical staff can timely replace the infused medicine or remove the infusion component.

Description

Technical Field

[0001] The present invention relates to the technical field of medical consumables, and more particularly to a device for preventing air bubbles from entering the body during intravascular treatment. Background Art

[0002] In the process of medical care, infusion is a very common intravascular therapy. Infusion can deliver drugs directly to the circulatory system and quickly replenish electrolytes in body fluids. It is a commonly used treatment and first aid technique in clinical practice.

[0003] At present, infusion has the following methods: intravenous injection, arterial injection and subcutaneous injection. During arterial injection, due to the high pressure in the artery, it is usually necessary to use a pressurizing device to pressurize the infusion bag so that the pressure in the infusion bag is greater than the pressure in the artery, so that the drug can smoothly enter the blood vessel and achieve the purpose of intravascular treatment. For example, when delivering heparin solution into the artery, the heparin solution is contained in a pressurized bag, and the pressurized bag is connected to the artery using a catheter and a puncture needle. During this process, the pressure in the pressurized bag is continuously higher than the arterial pressure, and the heparin solution can be continuously infused into the artery.

[0004] However, during the infusion process, if the liquid is not replaced in time after dripping, or the air is not properly exhausted before infusion, air may enter the circulatory system, thereby inducing gas embolism and even death. For this reason, an intravascular treatment device is proposed to prevent bubbles from entering the body. Summary of the invention

[0005] In view of the problem in the prior art that if the liquid is not replaced in time after dripping, or the air is not properly exhausted before infusion, air may enter the circulatory system, thereby inducing gas embolism and even causing death, the purpose of the present invention is to provide a device for intravascular treatment to prevent bubbles from entering the body.

[0006] To solve the above problems, the present invention adopts the following technical solutions.

[0007] A device for preventing bubbles from entering the body during intravascular treatment, comprising an infusion assembly and a pressure monitoring mechanism, wherein the infusion assembly comprises a bag body and an infusion tube, wherein the bag body is suspended at a monitoring end of the pressure monitoring mechanism, and a bubble detection assembly is arranged on the infusion tube, wherein the bubble detection assembly is used to detect bubbles in a delivery pipeline and discharge them;

[0008] The bubble detection assembly includes a detection cylinder, an ultrasonic detector, a first piston and an exhaust pipe, the first piston is installed in the detection cylinder, the upper surface of the detection cylinder and the first piston are connected to the infusion tube, the exhaust pipe is connected and installed on the upper surface of the detection cylinder, a slot is provided on the outer surface of the detection cylinder, the ultrasonic detector is inserted into the slot, the exhaust pipe, the connection between the infusion tube and the detection cylinder and the connection between the infusion tube and the first piston are all provided with a first valve body, and the detection cylinder is provided with a pushing assembly for driving the first piston to move.

[0009] Optionally, the pressure monitoring mechanism includes a pressure sensor, the upper surface and the lower surface of the pressure sensor are both provided with hooks, the top of the bag body is fixedly connected with a ring, and the ring can be hung on the hook.

[0010] Optionally, the first valve body is an electrically controlled electric valve assembly.

[0011] Optionally, the first valve body includes a ferrule fixedly mounted on the upper surface of the detection cylinder and the lower surface of the first piston, the ferrule is embedded with an L-shaped plug rod, one end of the L-shaped plug rod is fixedly connected to the seat body, the seat body is a U-shaped structure, and a slide groove is provided on the outer surface of the seat body, a slider is cooperatedly installed inside the slide groove, one end of the slider is fixedly connected to a permanent magnet, one side of the seat body is fixedly connected to an electromagnet, a guide rod parallel to the slide groove is inserted at the center of the slider, both ends of the guide rod are fixedly connected to the seat body, and a first spring is sleeved on the surface of the guide rod.

[0012] Optionally, the bag body includes a pressurized bag and a liquid storage bag, the liquid storage bag is located inside the pressurized bag, and one end of the infusion tube is connected to the liquid storage bag, the other end of the infusion tube is connected to a puncture needle, one side of the pressurized bag is connected to a ventilation tube, and one end of the ventilation tube is fixedly installed with a connector.

[0013] Optionally, the pushing assembly includes a cylinder body arranged on the lower surface of the detection cylinder, a second piston is installed inside the cylinder body, a push rod is fixed on the upper surface of the second piston, the push rod is used to push the first piston, a second spring is sleeved on the surface of the push rod, an input pipe and an output pipe are installed on the lower surface of the cylinder body, the cylinder body is connected to the pressurized bag by setting the input pipe, and a second valve body is provided in both the input pipe and the output pipe.

[0014] Optionally, fixing plates are fixedly connected to both sides of the cylinder body, and the fixing plates are connected to the detection cylinder via plug-in bolts.

[0015] Optionally, one end of the input tube is connected to the pressurized bag by providing a pipeline connector.

[0016] Optionally, the second valve bodies are configured as electrically controlled electric valve assemblies.

[0017] Optionally, the upper surface of the cylinder is open, and the upper end of the push rod is fixedly connected to a push plate, the length of the push plate is smaller than the inner diameter of the cylinder, and the inner surface of the detection cylinder is fixedly connected to multiple groups of elastic sheets, which are arranged in the moving direction of the push plate and have overlapping parts on the push plate.

[0018] Compared with the prior art, the technical solution provided by the present invention has at least the following beneficial effects:

[0019] In the above scheme, the weight of the liquid in the liquid storage bag is monitored by monitoring the weight of the infusion assembly through the pressure monitoring mechanism. When the value monitored by the pressure monitoring mechanism is equal to or lower than the warning value, the pressure monitoring mechanism can promptly close the first valve body and the inflation device on the infusion tube to prevent the liquid in the liquid storage bag from being infused and air from entering the delivery pipeline.

[0020] The pressure monitoring mechanism can also be used in conjunction with an alarm, which can be an audible and visual alarm or other signal alarm device. When the value monitored by the pressure monitoring mechanism is equal to or lower than the warning value, the audible and visual alarm can emit a buzzer sound or transmit the alarm information to a mobile device terminal. Medical staff can receive the alarm and replace the infused medicine or remove the infusion component in time.

[0021] By setting a bubble detection component to use the principle of ultrasonic bubble detection to check whether there are bubbles in the detection cylinder, and by setting a push component to cooperate with the first piston and other mechanisms, the bubbles in the detection cylinder can be discharged. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable those skilled in the relevant art to make and use the invention.

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0024] Figure 2 For the present invention Figure 1 Schematic diagram of the structure of the part;

[0025] Figure 3 For the present invention Figure 2 A cross-sectional view of

[0026] Figure 4 For the present invention Figure 1 A partial cross-sectional view;

[0027] Figure 5 is a cross-sectional view of a moving assembly of the present invention;

[0028] Figure 6 It is a structural schematic diagram of the first valve body of the present invention;

[0029] Figure 7 For the present invention Figure 3 The enlarged view of point A in the middle;

[0030] Figure 8 For the present invention Figure 3 Enlarged view of point B in the middle.

[0031] [Reference Signs]

[0032] 1. Infusion assembly; 11. Pressurized bag; 12. Liquid storage bag; 13. Ventilation tube; 14. Connector; 15. Lifting ring; 16. Infusion tube; 17. Puncture needle; 2. Pressure sensor; 3. Hook; 4. Bubble detection assembly; 41. Detection cylinder; 42. Ultrasonic detector; 43. First piston; 44. Exhaust pipe; 45. Slot; 5. First valve body; 51. Seat; 52. Permanent magnet; 53. Slide; 54. Guide rod; 55. First spring; 56. Electromagnet; 57. L-shaped rod; 58. Card sleeve; 59. Slider; 6. Push assembly; 61. Cylinder; 62. Push rod; 63. Second piston; 64. Input tube; 65. Output tube; 66. Second spring; 67. Second valve body; 7. Elastic sheet; 8. Push plate; 9. Bolt; 10. Fixing plate.

[0033] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0034] The following is a detailed description of a device for preventing bubbles from entering the body in an intravascular treatment provided by the present invention in conjunction with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the drawings are only for more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0035] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiments", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0036] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0037] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers therebetween, and “on” or “over” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers therebetween.

[0038] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0039] like Figures 1 to 8 As shown, an embodiment of the present invention provides a device for preventing bubbles from entering the body during intravascular treatment, including an infusion component 1 and a pressure monitoring mechanism. The infusion component 1 includes a bag body and an infusion tube 16. The bag body is suspended at the monitoring end of the pressure monitoring mechanism. A bubble detection component 4 is provided on the infusion tube 16. The bubble detection component 4 is used to detect bubbles in the delivery pipeline and discharge them.

[0040] like Figure 2 and Figure 3As shown, the bubble detection component 4 includes a detection cylinder 41, an ultrasonic detector 42, a first piston 43 and an exhaust pipe 44. The first piston 43 is installed in the detection cylinder 41. The upper surface of the detection cylinder 41 and the first piston 43 are connected with the infusion tube 16. The exhaust pipe 44 is connected and installed on the upper surface of the detection cylinder 41. A slot 45 is provided on the outer surface of the detection cylinder 41. The ultrasonic detector 42 is inserted into the slot 45. The exhaust pipe 44, the connection between the infusion tube 16 and the detection cylinder 41, and the connection between the infusion tube 16 and the first piston 43 are all provided with a first valve body 5. The first valve body 5 is an electrically controlled electric valve component. The detection cylinder 41 is provided with a push assembly 6 for driving the first piston 43 to move.

[0041] like Figure 4 As shown, the pressure monitoring mechanism includes a pressure sensor 2 , the upper surface and the lower surface of the pressure sensor 2 are both provided with hooks 3 , and a ring 15 is fixedly connected to the top of the bag body, and the ring 15 can be hung on the hook 3 .

[0042] The first valve body 5 in this embodiment can be used in conjunction with any existing type of solenoid valve to meet the simple on-off control of the pipeline. In this embodiment, the solenoid valve model can be BZCD-1. At the same time, a battery assembly is set in the detection cylinder 41 or any other part to provide corresponding power for the solenoid valve. The switch of the first valve body 5 can be used in conjunction with the control machine and the pressure sensor 2. When the value detected by the pressure sensor 2 is equal to or lower than the set value, the pressure sensor 2 transmits a signal to the control machine, and the control machine can close the first valve body 5 on the infusion tube 16 in time.

[0043] like Figure 4 As shown, the bag body includes a pressurized bag 11 and a liquid storage bag 12. The liquid storage bag 12 is located inside the pressurized bag 11, and one end of an infusion tube 16 is connected to the liquid storage bag 12. The other end of the infusion tube 16 is connected to a puncture needle 17. One side of the pressurized bag 11 is connected to a ventilation tube 13, and one end of the ventilation tube 13 is fixedly installed with a connector 14.

[0044] Specifically, during arterial infusion, a pressurizing device is required to increase the pressure in the liquid storage bag 12 so that the pressure in the liquid storage bag 12 is greater than the pressure in the artery, so that the drug can smoothly enter the artery. In this embodiment, the inner surface of the connector 14 is provided with an internal thread, which can be connected to an external inflation device through the connector 14. The inflation device transports gas to the pressurized bag 11 through the ventilation tube 13 to increase the pressure in the pressurized bag 11, thereby squeezing the liquid storage bag 12 and increasing the pressure of the liquid storage bag 12.

[0045] The pressure sensor 2 is a device or apparatus that can sense pressure signals and convert pressure signals into usable output electrical signals according to certain rules. The pressure sensor 2 is usually composed of a pressure sensitive element and a signal processing unit. According to different test pressure types, the pressure sensor 2 can be divided into a gauge pressure sensor, a differential pressure sensor and an absolute pressure sensor. In this embodiment, the pressure sensor 2 can be any type that meets the simple weight monitoring function.

[0046] The pressure monitoring mechanism monitors the weight of the liquid in the liquid storage bag 12 by monitoring the weight of the infusion component 1. Before the actual infusion, the warning value of the pressure monitoring mechanism can be set according to the weight of the liquid in the liquid storage bag 12 and the weight of the infusion component 1. For example, the warning value of the pressure monitoring mechanism is the sum of the weight of 10 ml of liquid in the liquid storage bag 12 and the infusion component. When the value monitored by the pressure monitoring mechanism is equal to or lower than the warning value, the pressure monitoring mechanism can promptly close the first valve body 5 and the inflation device on the infusion tube 16 to prevent the liquid in the liquid storage bag 12 from running out and air from entering the delivery pipeline.

[0047] In addition, during actual use, the pressure monitoring mechanism can also be used in conjunction with an alarm, which can be an audible and visual alarm or other signal alarm device. When the value monitored by the pressure monitoring mechanism is equal to or lower than the warning value, the audible and visual alarm can emit a buzzer sound or transmit the alarm information to a mobile device terminal. Upon receiving the alarm, medical staff can promptly replace the infused medicine or remove the infusion component 1.

[0048] In this embodiment, the bubble detection assembly 4 is used to detect whether there are bubbles in the infusion tube 16. The principle of ultrasonic detection of bubbles is mainly based on the propagation characteristics of ultrasonic waves in liquids, especially the difference in acoustic impedance between liquids and gases. When the ultrasonic sensor emits high-frequency sound waves, these sound waves propagate in the liquid. If there are bubbles in the liquid, the sound waves will be strongly reflected and scattered on the surface of the bubbles, because there is a large difference in acoustic impedance between the liquid and the gas. This reflection prevents the sound waves from reaching the receiving end, and thus is detected by the sensor. This detection method has no strict requirements on the color, transparency, and light transmittance of the pipeline, and can detect bubbles in non-transparent pipelines and liquids. Therefore, when the ultrasonic detector 42 in this embodiment detects that there are bubbles inside the detection cylinder 41, the ultrasonic detector 42 transmits a signal to the control machine, and the control machine closes the first valve body 5 on the infusion tube 16, opens the first valve body 5 on the exhaust pipe 44, and uses the push assembly 6 to drive the first piston 43 to move up, so that the bubbles are discharged from the exhaust pipe 44. After the ultrasonic detector 42 detects that the bubbles inside the detection tube 41 are discharged, the first valve body 5 on the exhaust pipe 44 can be closed again, and the first valve body 5 on the infusion tube 16 can be opened to continue the infusion.

[0049] like Figure 6 and Figure 7 As shown, the first valve body 5 includes a sleeve 58 fixedly mounted on the upper surface of the detection cylinder 41 and the lower surface of the first piston 43, and the sleeve 58 is embedded with an L-shaped plug rod 57, one end of the L-shaped plug rod 57 is fixedly connected to the seat body 51, the seat body 51 is a U-shaped structure, and a slide groove 53 is provided on the outer surface of the seat body 51, a slider 59 is installed inside the slide groove 53, one end of the slider 59 is fixedly connected to a permanent magnet 52, one side of the seat body 51 is fixedly connected to an electromagnet 56, a guide rod 54 parallel to the slide groove 53 is inserted at the center of the slider 59, both ends of the guide rod 54 are fixedly connected to the seat body 51, and a first spring 55 is sleeved on the surface of the guide rod 54.

[0050] Since the infusion assembly 1 is a disposable product, the cost of using an electromagnetic valve component in the first valve body 5 is relatively high. Therefore, the first valve body 5 in this embodiment is a detachable external truncation structure, which can be reused to reduce the cost of use. Specifically, by setting an L-shaped plug rod 57 and a sleeve 58 for plugging and matching, the first valve body 5 as a whole and the detection cylinder 41 or the first valve body 5 as a whole The first piston 43 can be detached to achieve the purpose of reusing the first valve body 5. In actual use, the infusion tube 16 is located between the electromagnet 56 and the permanent magnet 52, and the exhaust pipe 44 is located between the permanent magnet 52 and the other side of the seat body 51. When the pressure sensor 2 and the ultrasonic detector 42 send a signal to the control machine, the control machine can turn on the power supply of the electromagnet 56, and the electromagnet 56 generates magnetism to attract the permanent magnet 52 to move, and the electromagnet 5 6 is adsorbed together with the permanent magnet 52, thereby cutting off the infusion tube 16 and preventing the flow of medicine in the infusion tube 16. At this time, the first spring 55 sleeved on the surface of the guide rod 54 is stretched. When the ultrasonic detector 42 detects that the bubbles in the detection tube 41 are eliminated, the ultrasonic detector 42 transmits a signal to the control machine, and the control machine can disconnect the power supply of the electromagnet 56. The electromagnet 56 loses its magnetism, and the stretched first spring 55 is reset, driving the permanent magnet 52 to move back. The permanent magnet 52 moves to the other side of the seat body 51, and the infusion tube 16 is opened, while the exhaust pipe 44 is cut off.

[0051] like Figure 5 As shown, the pushing assembly 6 includes a cylinder body 61 arranged on the lower surface of the detection cylinder 41, a second piston 63 is installed in the cylinder body 61, a push rod 62 is fixed on the upper surface of the second piston 63, the push rod 62 is used to push the first piston 43, a second spring 66 is sleeved on the surface of the push rod 62, an input pipe 64 and an output pipe 65 are installed on the lower surface of the cylinder body 61, the cylinder body 61 is connected to the pressurized bag 11 by setting the input pipe 64, and a second valve body 67 is arranged in the input pipe 64 and the output pipe 65, and the second valve body 67 is set as an electrically controlled electric valve assembly.

[0052] The two sides of the cylinder body 61 are fixedly connected with fixing plates 10 , and the fixing plates 10 are connected to the detection cylinder 41 through inserting bolts 9 .

[0053] One end of the input tube 64 is connected to the pressurized bag 11 by providing a pipeline connector.

[0054] The upper surface of the cylinder 61 is open, and the upper end of the push rod 62 is fixedly connected to a push plate 8, the length of the push plate 8 is smaller than the inner diameter of the cylinder 61, and the inner surface of the detection cylinder 41 is fixedly connected to multiple groups of elastic sheets 7, which are arranged in the moving direction of the push plate 8 and have overlapping parts with the push plate 8.

[0055] In this embodiment, the pushing assembly 6 is used to push the first piston 43 to discharge the bubbles in the detection cylinder 41. Specifically, the ultrasonic detector 42 transmits a signal to the control machine after detecting the bubbles. The control machine can open the second valve body 67 on the input pipe 64 and close the second valve body 67 on the output pipe 65. Therefore, the gas in the pressurized bag 11 can be input into the cylinder body 61 through the input pipe 64, thereby pushing the second piston 63 and the push rod 62 to move. The push rod 62 can thereby push the first piston 43 to achieve the purpose of discharging the bubbles in the detection cylinder 41, and the second piston 63 will compress the second spring 66 when it moves.

[0056] like Figure 5 and Figure 8 As shown, by setting the push plate 8 and the elastic sheet 7, before the push plate 8 contacts the first piston 43, it will push the elastic sheet 7, and the elastic sheet 7 will vibrate, thereby driving the detection tube 41 to vibrate, thereby accelerating the upward movement of the bubbles to facilitate the discharge of the bubbles.

[0057] After the bubbles are eliminated, the control machine closes the second valve body 67 on the input pipe 64 and opens the second valve body 67 on the output pipe 65, and the compressed second spring 66 is reset, thereby driving the second piston 63 and the push rod 62 to reset.

[0058] The cylinder body 61 is connected to the detection cylinder 41 by bolts 9, and the input tube 64 is connected to the pressurized bag 11 by a pipe connector, which can be a threaded structure. Therefore, the pushing assembly 6 as a whole is a detachable structure, and the pushing assembly 6 does not contact the drug and can be reused.

[0059] The second valve body 67 in this embodiment can be used in conjunction with any existing type of solenoid valve to meet the simple on-off control of the pipeline. In this embodiment, the solenoid valve model can be BZCD-1. At the same time, a battery assembly is set on the cylinder 61 or any other part to provide corresponding power for the solenoid valve. The switch of the second valve body 67 can be used in conjunction with a control machine and an ultrasonic detector 42. The ultrasonic detector 42 can transmit the detection signal to the control machine, and the control machine can close or open the second valve body 67 in time.

[0060] It should be noted that the control machine in this embodiment can be a single-chip microcomputer for control. The single-chip microcomputer is composed of an arithmetic unit, a memory, an input and output device, etc., which is equivalent to a microcomputer. Compared with the general-purpose microprocessor used in personal computers, it emphasizes self-supply (no external hardware) and cost saving. Its biggest advantage is that it is small in size and can be placed inside the instrument, but it has a small storage capacity, a simple input and output interface, and low functional consumption. In this embodiment, the model of the single-chip microcomputer is not required.

[0061] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0062] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A device for preventing bubbles from entering the body during intravascular treatment, comprising an infusion component and a pressure monitoring mechanism, characterized in that: The infusion assembly includes a bag body and an infusion tube, wherein the bag body is suspended at the monitoring end of the pressure monitoring mechanism, and a bubble detection assembly is provided on the infusion tube, and the bubble detection assembly is used to detect bubbles in the delivery pipeline and discharge them; The bubble detection assembly includes a detection cylinder, an ultrasonic detector, a first piston and an exhaust pipe, the first piston is installed in the detection cylinder, the upper surface of the detection cylinder and the first piston are connected to the infusion tube, the exhaust pipe is connected and installed on the upper surface of the detection cylinder, a slot is provided on the outer surface of the detection cylinder, the ultrasonic detector is inserted in the slot, the exhaust pipe, the connection between the infusion tube and the detection cylinder and the connection between the infusion tube and the first piston are all provided with a first valve body, and the detection cylinder is provided with a push assembly for driving the first piston to move; The pressure monitoring mechanism comprises a pressure sensor, the upper surface and the lower surface of the pressure sensor are both provided with hooks, the top of the bag body is fixedly connected with a hanging ring, and the hanging ring can be hung on the hanging hook; The bag body includes a pressurized bag and a liquid storage bag, wherein the liquid storage bag is located inside the pressurized bag, and one end of the infusion tube is connected to the liquid storage bag, and the other end of the infusion tube is connected to a puncture needle, and one side of the pressurized bag is connected to a ventilation tube, and one end of the ventilation tube is fixedly installed with a connector; The pushing assembly includes a cylinder body arranged on the lower surface of the detection cylinder, a second piston is installed in the cylinder body, a push rod is fixed on the upper surface of the second piston, the push rod is used to push the first piston, a second spring is sleeved on the surface of the push rod, an input pipe and an output pipe are installed on the lower surface of the cylinder body, the cylinder body is connected to the pressurized bag by the input pipe, and a second valve body is arranged in both the input pipe and the output pipe.

2. The device for intravascular treatment to prevent air bubbles from entering the body according to claim 1, characterized in that: The first valve body is an electrically controlled electric valve assembly.

3. The device for intravascular treatment to prevent air bubbles from entering the body according to claim 1, characterized in that: The first valve bodies each include a ferrule fixedly mounted on the upper surface of the detection cylinder and the lower surface of the first piston, the ferrule is embedded with an L-shaped plug rod, one end of the L-shaped plug rod is fixedly connected to a seat body, the seat body is a U-shaped structure, and a slide groove is provided on the outer surface of the seat body, a slider is cooperatedly installed inside the slide groove, one end of the slider is fixedly connected to a permanent magnet, one side of the seat body is fixedly connected to an electromagnet, a guide rod parallel to the slide groove is inserted at the center of the slider, both ends of the guide rod are fixedly connected to the seat body, and a first spring is sleeved on the surface of the guide rod.

4. The device for intravascular treatment to prevent air bubbles from entering the body according to claim 1, characterized in that: Both sides of the cylinder are fixedly connected with fixing plates, and the fixing plates are connected to the detection cylinder through plug-in bolts.

5. The device for intravascular treatment to prevent air bubbles from entering the body according to claim 4, characterized in that: One end of the input tube is connected to the pressurized bag by arranging a pipeline connector.

6. The device for preventing air bubbles from entering the body during intravascular treatment according to claim 5, characterized in that: The second valve bodies are all configured as electrically controlled electric valve components.

7. The device for intravascular treatment to prevent air bubbles from entering the body according to claim 6, characterized in that: The upper surface of the cylinder is open, and the upper end of the push rod is fixedly connected to a push plate, the length of the push plate is smaller than the inner diameter of the cylinder, and the inner surface of the detection cylinder is fixedly connected to multiple groups of elastic sheets, which are arranged in the moving direction of the push plate and have overlapping parts with the push plate.

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