Aorta balloon counterpulsation system

Abstract

The utility model provides an aorta balloon counterpulsation system, the aorta balloon counterpulsation system comprises a balloon, an inflation and deflation mechanism and a valve group, the inflation and deflation mechanism comprises a first air storage part, the volume of the first air storage part can be changed, and the first air storage part is provided with a plurality of air circulation ports; the first air storage part is connected with the balloon through one air circulation opening, and the first air storage part is further connected with an air source through the other air circulation opening; the valve group comprises a first valve and a second valve; the first valve is arranged between the balloon and the corresponding gas circulation opening and is used for controlling connection and disconnection between the first gas storage part and the balloon; the second valve is arranged between the gas source and the corresponding gas circulation opening and used for controlling connection and disconnection between the first gas storage part and the gas source. The gas source is used for providing working gas for the aortic balloon counterpulsation system. When the aorta balloon counterpulsation system is applied, inflation and deflation of the balloon are achieved by controlling the volume change of the first air storage part, and the inflation and deflation frequency of the balloon is controlled through the heart rate of a patient, so that the aorta balloon counterpulsation system can adapt to patients with various heart rates.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment, and in particular relates to an aortic balloon counterpulsation system. Background Art

[0002] Intraaortic balloon pumping is an effective means of treating low cardiac output syndrome. For patients with coronary heart disease who cannot maintain blood pressure after surgery and have heart failure, the application of intraaortic balloon pumping can effectively reduce cardiac pressure load, increase cardiac output, improve peripheral organ and tissue perfusion, increase coronary artery perfusion pressure and myocardial oxygen supply, while reducing myocardial oxygen consumption and increasing myocardial blood supply, thus buying more time for rescuing patients.

[0003] Transaortic balloon pump refers to placing a balloon in the descending aorta 2cm-3cm below the left clavicular artery through the femoral artery access. The balloon is connected to an external device through a catheter. When working, the balloon is inflated during ventricular systole to increase coronary artery perfusion, and the balloon is deflated at the end of ventricular diastole to reduce the left ventricular afterload, achieving the effect of assisting the heart.

[0004] When the aortic balloon counterpulsation system is used to treat patients with normal heart rate, the RR interval prediction method is usually adopted, that is, the balloon is inflated at the end of the left ventricular pumping period to assist pumping and increase the ejection volume, and the balloon is deflated a certain time in advance before the next left ventricular pumping, thereby forming a negative pressure in the artery relative to the left ventricle and reducing the pumping load of the left ventricle. In the RR interval prediction method, the time difference from the generation of electrical signals by ventricular contraction to aortic ejection is about 90ms to 100ms. Therefore, when deflating the balloon, the sum of the opening time of the valve that controls the activation of the balloon suction port and the deflation time of the balloon should be controlled between 70ms and 80ms, so that the balloon can be deflated during the period from the generation of electrical signals by ventricular contraction to aortic ejection, so that the ratio of the number of balloon inflations to the number of heartbeats of the patient can reach 1:1. However, for patients with a faster heart rate, for example, a heart rate of 140bpm, the time difference between the electrical signal generated by the ventricular contraction and the aortic ejection is less than 90ms, resulting in the inflation and deflation frequency of the aortic balloon counterpulsation system being unable to match the patient's heart rate. The balloon may even fail to be fully inflated due to the patient's excessively fast heart rate, and thus basically lose its auxiliary effect. Utility Model Content

[0005] The utility model aims to provide an aortic balloon counterpulsation system, aiming to achieve flexible adjustment of the auxiliary frequency, so that the inflation times of the balloon of the aortic balloon counterpulsation system matches the heartbeat times of the patient.

[0006] To achieve the above object, the utility model provides an aortic balloon counterpulsation system, comprising:

[0007] Balloon;

[0008] The inflation and deflation mechanism comprises a first gas storage part; the volume of the first gas storage part can be changed, and the first gas storage part is provided with a plurality of gas flow ports; the first gas storage part is connected to the balloon through one of the gas flow ports, and the first gas storage part can also be connected to a gas source through another of the gas flow ports;

[0009] The valve group includes a first valve and a second valve; the first valve is arranged between the balloon and the corresponding gas flow port, and is used to control the connection and disconnection between the first gas storage part and the balloon; the second valve is arranged between the gas source and the corresponding gas flow port, and is used to control the connection and disconnection between the first gas storage part and the gas source.

[0010] Optionally, an exhaust port is further provided on the first air storage part, and the valve group further includes a third valve, which is arranged at the exhaust port and is used to control the connection and disconnection between the first air storage part and the external environment.

[0011] Optionally, the aortic balloon counterpulsation system further comprises a second gas storage part, and the second gas storage part is connected to the first gas storage part through one of the gas flow ports;

[0012] The valve group further includes a fourth valve, which is disposed between the second gas storage portion and the corresponding gas flow port and is used to control the connection and disconnection between the second gas storage portion and the first gas storage portion.

[0013] Optionally, the second gas storage portion is elastic, and the volume of the second gas storage portion can be changed;

[0014] When the second air storage portion stores elastic potential energy, the volume of the second air storage portion increases, and when the second air storage portion releases the elastic potential energy, the volume of the second air storage portion decreases.

[0015] Optionally, the first air storage part has a fixed end and a movable end opposite to each other in its axial direction, and the fixed end of the first air storage part remains stationary; the inflation and deflation mechanism also includes a driving part, which is connected to the movable end of the first air storage part and is used to drive the movable end of the first air storage part to move along its axial direction to change the volume of the first air storage part.

[0016] Optionally, the first air storage portion includes a bellows.

[0017] Optionally, the driving unit includes a motor, a screw, and a nut, the screw is connected to the output end of the motor, the nut is sleeved on the screw and connected to the movable end of the first air storage unit; the first air storage unit is sleeved on the outer peripheral surface of the screw on the side of the nut away from the motor.

[0018] Optionally, the aortic balloon counterpulsation system further includes a monitoring component, and the monitoring component is used to monitor the pressure in the first air storage portion and the balloon.

[0019] Optionally, both the first valve and the second valve are solenoid valves; and / or,

[0020] The intraaortic balloon counterpulsation system also includes the gas source.

[0021] Optionally, the aortic balloon counterpulsation system also includes a controller, which is communicatively connected to the inflation and deflation mechanism and the valve group, and is configured to regulate the volume of the first air storage portion, and is configured to control the opening or closing of the first valve, and control the opening or closing of the second valve.

[0022] Compared with the prior art, the aortic balloon counterpulsation system of the utility model has the following advantages:

[0023] The aforementioned aortic balloon counterpulsation system includes a balloon, an inflation and deflation mechanism and a valve group. The inflation and deflation mechanism includes a first gas storage part, the volume of which can be changed, and a plurality of gas flow ports are provided on the first gas storage part; the first gas storage part is connected to the balloon through one of the gas flow ports, and the first gas storage part is also connected to the gas source through another gas flow port; the valve group includes a first valve and a second valve; the first valve is arranged between the balloon and the corresponding gas flow port, and is used to control the connection and disconnection between the first gas storage part and the balloon; the second valve is arranged between the gas source and the corresponding gas flow port, and is used to control the connection and disconnection between the first gas storage part and the gas source. The gas source is used to provide working gas for the aortic balloon counterpulsation system. When the aortic balloon counterpulsation system is used, the inflation and deflation of the balloon are realized by controlling the volume change of the first gas storage part, and the inflation and deflation frequency of the balloon is controlled by the patient's heart rate, so that the aortic balloon counterpulsation system can adapt to patients with various heart rates.

[0024] The first gas storage part is also provided with an exhaust port, and the valve group also includes a third valve, which is arranged at the exhaust port and is used to control the connection and disconnection between the first gas storage part and the external environment. In this way, the exhaust port can be used to basically exhaust the air in the aortic balloon counterpulsation system before the aortic balloon counterpulsation system is used to assist the heart, so as to ensure the purity of the working gas in the aortic balloon counterpulsation system. For the case of using helium as the working gas, the higher the purity of the helium, the faster the shuttle speed of the gas in the aortic balloon counterpulsation system, the better the time efficiency, and the more conducive to regulating the inflation and deflation frequency of the balloon, so that the inflation and deflation frequency of the balloon can be better adapted to the patient's heart rate; for the case of using carbon dioxide as the working gas, the solubility of the gas in the aortic balloon counterpulsation system in the blood is high, even if the balloon ruptures in the body and causes the gas in the aortic balloon counterpulsation system to enter the blood, it is not easy to cause gas embolism, thereby improving the safety during the treatment process. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are used to better understand the present invention and do not constitute an improper limitation on the present invention.

[0026] Figure 1 It is a schematic structural diagram of an aortic balloon counterpulsation system provided by the utility model according to one embodiment.

[0027] [Description of reference numerals is as follows]:

[0028] 10-aortic balloon counterpulsation system, 100-balloon, 200-inflating and deflation mechanism, 210-first gas storage unit, 211-gas flow port, 212-exhaust port, 213-fixed end, 214-movable end, 220-driving unit, 221-motor, 222-screw, 223-nut, 300-valve group, 310-first valve, 320-second valve, 330-third valve, 340-fourth valve, 400-gas source, 500-monitoring component, 510-first pressure monitoring element, 520-second pressure monitoring element, 600-second gas storage unit. DETAILED DESCRIPTION

[0029] The following describes the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in this embodiment only illustrate the basic concept of the present invention in a schematic manner, so the diagram only shows the components related to the present invention rather than drawing according to the number, shape and size of the components in the actual implementation. The type, quantity and proportion of each component in the actual implementation can be a random change, and the component layout type may also be more complicated.

[0030] In addition, each embodiment of the following description has one or more technical features, but this does not mean that the user of the present invention must implement all the technical features in any embodiment at the same time, or can only implement part or all of the technical features in different embodiments separately. In other words, under the premise of being possible to implement, those skilled in the art can selectively implement part or all of the technical features in any embodiment according to the disclosure of the present invention and according to the design specifications or implementation requirements, or selectively implement a combination of part or all of the technical features in multiple embodiments, thereby increasing the flexibility of the implementation of the present invention.

[0031] As used in this specification, the singular forms "one", "an", and "the" include plural objects, and the plural form "a plurality" includes more than two objects, unless the content clearly indicates otherwise. As used in this specification, the term "or" is generally used in a sense that includes "and / or", unless the content clearly indicates otherwise, and the terms "installed", "connected", and "connected" 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 directly connected or indirectly connected through an intermediate medium, and it can be a connection between two elements or an interactive relationship between two elements. Relational terms such as the terms "first", "second", etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations, nor do they indicate or imply relative importance or implicitly indicate the number of technical features indicated. It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] The utility model aims to provide an aortic balloon counterpulsation system, which can work according to the heart rate of the patient, thereby providing a cardiac assist function for the patient with normal or abnormal heart rate.

[0033] In order to make the purpose, advantages and features of the utility model clearer, the utility model is further described in detail below in conjunction with the accompanying drawings. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the utility model. The same or similar reference numerals in the drawings represent the same or similar components.

[0034] Figure 1 FIG. 1 is a schematic diagram showing the structure of an aortic balloon counterpulsation system 10 provided by an embodiment of the present invention. Figure 1As shown, the aortic balloon counterpulsation system 10 includes a balloon 100, an inflation and deflation mechanism 200 and a valve group 300. The inflation and deflation mechanism 200 includes a first gas storage part 210, the first gas storage part 210 is a hollow structure, and the volume of the first gas storage part 210 can be changed. A plurality of gas flow ports 211 are provided on the first gas storage part 210. The first gas storage part 210 is connected to the balloon 100 through one of the gas flow ports 211, and the first gas storage part 210 is also connected to the gas source 400 through another gas flow port 211. For ease of description, hereinafter, the gas flow port 211 connected to the balloon 100 is referred to as the first gas flow port, and the gas flow port 211 connected to the gas source 400 is referred to as the second gas flow port. The valve group 300 includes a first valve 310 and a second valve 320. The first valve 310 is arranged between the balloon 100 and the first gas flow port, and is used to control the connection and disconnection between the first gas storage part 210 and the balloon 100. The second valve 320 is arranged between the gas source 400 and the second gas flow port, and is used to control the connection and disconnection between the gas source 400 and the first gas storage part 210.

[0035] When the first valve 310 is opened, the first gas storage part 210 is connected to the balloon 100 through the first gas flow port, and the gas is allowed to flow between the first gas storage part 210 and the balloon 100 through the first gas flow port. When the first valve 310 is closed, the first gas storage part 210 and the balloon 100 are isolated from each other, and the gas is prevented from flowing between the first gas storage part 210 and the balloon 100. The gas source 400 stores high-pressure working gas, and the aortic balloon counterpulsation system 10 may further include the gas source 400. When the second valve 320 is opened, the gas source 400 is connected to the first gas storage part 210 through the second gas flow port, and the gas source 400 provides the working gas to the first gas storage part 210 through the second gas flow port. When the second valve 320 is closed, the gas source 400 is isolated from the first gas storage part 210, and the gas source 400 stops providing the working gas to the first gas storage part 210. The working gas is carbon dioxide or helium. The first gas storage portion 210 has a maximum volume and a minimum volume.

[0036] When performing intraaortic balloon counterpulsation using the intraaortic balloon counterpulsation system 10, the balloon 100 is implanted in the descending aorta of the patient. The intraaortic balloon counterpulsation system 10 performs at least the following actions in each working cycle:

[0037] When the first gas storage section 210 is at the maximum volume, there is a predetermined amount of the working gas in the first gas storage section 210, the balloon 100 is in a pressure relief state, and the first valve 310 and the second valve 320 are both closed, the volume of the first gas storage section 210 is controlled to decrease to increase the pressure in the first gas storage section 210. When the pressure in the first gas storage section 210 increases to a first predetermined value, the first valve 310 is opened, and the volume of the first gas storage section 210 is continuously controlled to decrease, so that the gas in the first gas storage section 210 quickly enters the balloon 100 to achieve the filling of the balloon 100. When the pressure in the balloon 100 increases to a second predetermined value, it is determined that the balloon 100 is fully filled, and the first valve 310 is closed.

[0038] When it is necessary to relieve the pressure of the balloon 100, the volume of the first gas storage part 210 is first controlled to increase so as to reduce the pressure in the first gas storage part 210. When the pressure in the first gas storage part 210 is reduced to a third predetermined value, the first valve 310 is opened, and the volume of the first gas storage part 210 is continuously controlled to increase so that the gas in the balloon 100 quickly flows into the first gas storage part 210 to relieve the pressure of the balloon 100. When the pressure in the balloon 100 is reduced to a fourth predetermined value, it is determined that the balloon 100 is completely relieved, and the first valve 310 is closed.

[0039] The first predetermined value, the second predetermined value, the third predetermined value, and the fourth predetermined value are all set according to actual conditions, wherein the first predetermined value and the second predetermined value are both positive values. The third predetermined value is less than the first predetermined value and the second predetermined value, and can be a positive value or a negative value. The fourth predetermined value can be zero.

[0040] Furthermore, the first predetermined value is proportional to the patient's heart rate, and the third predetermined value is inversely proportional to the patient's heart rate. The reason for this is that the first predetermined value and the third predetermined value are related to the time it takes for the aortic balloon counterpulsation system 10 to complete one working cycle, and further to the inflation and deflation frequency of the balloon 100. Specifically, when the first predetermined value is larger, the pressure difference between the balloon 100 and the first air storage section 210 is larger at the moment when the balloon 100 starts to be inflated, and then during the inflation process of the balloon 100, the gas flows from the first air storage section 210 to the balloon 100 faster, and the filling time of the balloon 100 is shorter; similarly, when the third predetermined value is smaller, when the pressure difference between the balloon 100 and the first air storage section 210 is larger at the moment when the balloon 100 starts to be depressurized, and then during the depressurization process of the balloon 100, the gas flows from the balloon 100 to the first air storage section 210 faster, and the depressurization time of the balloon 100 is shorter; thus, the time for the aortic balloon counterpulsation system 10 to complete one working cycle is shorter.

[0041] Based on this, when the patient's heart rate is high, the filling time of the balloon 100 can be shortened by increasing the first predetermined value, and the decompression time of the balloon 100 can be shortened by reducing the second predetermined value, thereby shortening the time for the aortic balloon counterpulsation system 10 to complete one working cycle, and then increasing the inflation and deflation frequency of the balloon 100, so that the inflation and deflation frequency of the balloon 100 can be adapted to the patient's heart rate, achieving a 1:1 effect between the number of inflations of the balloon 100 and the number of heartbeats of the patient, thereby improving the heart assist effect.

[0042] It can be understood that the aortic balloon counterpulsation system 10 further includes a monitoring component 500, and the monitoring component 500 is used to monitor the pressure of the first gas storage part 210 and the balloon 100. Specifically, the monitoring component 500 includes a first pressure monitoring element 510 and a second pressure monitoring element 520, wherein the first pressure monitoring element 510 is disposed on the first gas storage part 210 and is used to monitor the pressure in the first gas storage part 210, and the second pressure monitoring element is disposed between the first valve 310 and the balloon 100 and is used to monitor the pressure in the balloon 100.

[0043] In practice, the third predetermined value is generally set to a negative value, and it is expected that before the balloon 100 starts to release pressure, the volume of the first gas storage section 210 can be reduced to the minimum volume, so that the amount of gas in the first gas storage section 210 is reduced to a minimum. In this way, the speed at which the pressure inside the first gas storage section 210 is reduced to the third predetermined value by increasing the volume of the first gas storage section 210 is faster, thereby making the time for the aortic balloon counterpulsation system 10 to complete a working cycle shorter, and more conducive to adjusting the inflation and deflation frequency of the balloon 100 to match the patient's heart rate. However, in practice, the maximum volume of the first gas storage section 210 is much larger than the volume of the balloon 100. When the pressure in the balloon 100 reaches the second predetermined value, the first gas storage section 210 still has a larger volume and still has more gas in it.

[0044] In view of this, the intraaortic balloon counterpulsation system 10 preferably further comprises a second gas storage unit 600, and the second gas storage unit 600 is connected to the first gas storage unit 210 via a gas flow port 211. Optionally, the gas flow port 211 connected to the second gas storage unit 600 is the first gas flow port (such as Figure 1 In an alternative embodiment, the gas flow port connected to the second gas storage part is a third gas flow port (not shown in the figure) that is different from the first gas flow port and the second gas flow port. The valve group 300 also includes a fourth valve 340, which is arranged between the second gas storage part 600 and the corresponding gas flow port 211 (at Figure 1 In the embodiment, the fourth valve 340 is disposed between the second gas storage wall 600 and the first gas flow port) to control the on-off between the second gas storage part 600 and the first gas storage part 210. That is, when the fourth valve 340 is opened, the second gas storage part 600 is connected with the first gas storage part 210, and gas is allowed to flow between the second gas storage part 600 and the first gas storage part 210 through the corresponding gas flow port 211; when the fourth valve 340 is closed, the second gas storage part 600 is isolated from the first gas storage part 210, and gas is prevented from flowing between the second gas storage part 600 and the first gas storage part 210.

[0045] Therefore, after completing the filling operation of the balloon 100 and closing the first valve 310, the fourth valve 340 can also be opened, and the volume of the first gas storage section 210 can be controlled to continue to decrease, so as to discharge the remaining gas in the first gas storage section 210 into the second gas storage section 600 until the volume of the first gas storage section 210 is reduced to the minimum volume and the amount of gas therein is reduced to a minimum.

[0046] It is understandable that after the pressure relief of the balloon 100 is completed, when the fourth valve 340 is opened and the volume of the first gas storage part 210 is controlled to continue to increase, the gas in the second gas storage part 600 can flow back to the first gas storage part 210 through the corresponding gas flow port 211.

[0047] Preferably, the second gas storage section 600 is made of elastic material, so that the volume of the second gas storage section 600 can change accordingly according to the change of its shape. Specifically, when the second gas storage section 600 is stretched and deformed and stores elastic potential energy, its volume increases. When the second gas storage section 600 releases elastic potential energy to restore deformation, its volume decreases. In this way, when the fourth valve 340 is opened and the volume of the first gas storage section 210 continues to decrease, the gas in the first gas storage section 210 enters the second gas storage section 600, and when the volume of the gas entering the second gas storage section 600 is greater than the natural volume of the second gas storage section 600, the gas entering the second gas storage section 600 applies a force to the second gas storage section 600, so that the second gas storage section 600 stretches and the volume increases to accommodate more gas. The advantage of doing so is that when the pressure of the balloon 100 is released and the fourth valve 340 is opened, the second gas storage portion 600 releases elastic potential energy and its volume is reduced to promote faster reflux of gas to the first gas storage portion 210.

[0048] Furthermore, an exhaust port 212 is also provided on the first gas storage part 210. The valve group 300 also includes a third valve 330, which is provided at the exhaust port 212 and is used to control the connection and disconnection between the first gas storage part 210 and the external environment. Specifically, when the third valve 330 is opened, the first gas storage part 210 is connected to the external environment through the exhaust port 212 to allow gas to flow between the inside of the aortic balloon counterpulsation system 10 and the external environment through the exhaust port 212. When the third valve 330 is closed, the aortic balloon counterpulsation system 10 is isolated from the external environment.

[0049] By setting the exhaust port 212, the air in the aortic balloon counterpulsation system 10 can be basically emptied before the balloon 100 is implanted in the patient's body. The advantage of doing so is that the purity of the working gas in the aortic balloon counterpulsation system 10 can be guaranteed. The shuttling speed of helium is relatively fast. Therefore, in the case of using helium as the working gas, the higher the purity of the helium in the aortic balloon counterpulsation system 10, the faster the shuttling speed of the gas in the aortic balloon counterpulsation system 10, and in the process of filling the balloon 100, the faster the filling speed of the balloon 100 and the shorter the filling time, and in the process of depressurizing the balloon 100, the faster the depressurization speed of the balloon 100 and the shorter the depressurization time, which is conducive to shortening the duration of the aortic balloon counterpulsation system 10 executing a working cycle, and further conducive to regulating the inflation and deflation frequency of the balloon 100. Carbon dioxide has a high solubility in the blood. Therefore, in the case of using carbon dioxide as the working gas, when the purity of the carbon dioxide in the aortic balloon counterpulsation system 10 is high, the gas in the aortic balloon counterpulsation system 10 can be basically dissolved in the blood. In this way, even if the balloon 100 ruptures in the body and causes the gas in the aortic balloon counterpulsation system 10 to enter the blood, it is not easy to cause gas embolism, thereby ensuring the safety of the treatment process.

[0050] The operation of exhausting the air in the aortic counterpulsation system 10 by using the exhaust port 212 may be referred to as pretreatment, which is performed outside the patient's body and generally includes the following steps:

[0051] Step S1, open the third valve 330, and close the first valve 310, the second valve 320 and the fourth valve 340. When performing this step, the volume of the first gas storage part 210 is generally its maximum volume.

[0052] Step S2: Control the volume of the first air storage part 210 to decrease until the volume of the first air storage part 210 reaches the minimum volume. By executing this step, the air in the first air storage part 210 can be discharged from the exhaust port 212.

[0053] Step S3, closing the third valve 330, and opening the first valve 310 and the fourth valve 340.

[0054] Step S4: Control the volume of the first air storage part 210 to increase until the volume of the first air storage part 210 increases to the maximum volume. By performing this step, the air in the balloon 100 and the second air storage part 600 can enter the first air storage part 210.

[0055] Step S5: close the first valve 310 and the fourth valve 340 , and open the second valve 320 and the third valve 330 .

[0056] Step S6: Control the volume of the first gas storage part 210 to decrease until the volume in the first gas storage part 210 decreases to the minimum volume. By executing this step, the gas in the first gas storage part 210 is discharged from the exhaust port 212 .

[0057] According to actual conditions, the steps S1 to S6 are executed at least once until the air in the intraaortic balloon counterpulsation system 10 is basically exhausted.

[0058] It should be noted that after the step S6 is executed, the third valve 330 can be closed. When executing the step S4, the reading of the first pressure monitoring element 510 can be read when the volume of the first gas storage unit 210 increases to the maximum volume, as the initial value of the first pressure monitoring element 510, which is recorded as P0. If it is expected that the pressure difference between the balloon 100 and the first gas storage unit 210 is ΔP1 at the moment when the balloon 100 starts to be inflated, the first predetermined value can be calculated to be P0+ΔP1; if it is expected that the pressure difference between the balloon 100 and the first gas storage unit 210 is ΔP2 at the moment when the balloon 100 starts to be depressurized, the third predetermined value can be calculated to be P0-ΔP2.

[0059] It should also be noted that, when the aortic balloon counterpulsation system 10 does not include the second air storage unit 600 and the valve group 300 does not include the fourth valve 340, there is no operation of closing the fourth valve 340 in step S1, there is no operation of opening the fourth valve 340 in step S3, and there is no operation of closing the fourth valve 340 in step S5.

[0060] In summary, the overall application process of the intraaortic balloon counterpulsation system 10 provided by the embodiment of the utility model can be as follows:

[0061] First, step S10 is performed, which is the pre-processing of the intraaortic balloon counterpulsation system 10 to exhaust the air in the intraaortic balloon counterpulsation system 10 as much as possible. The operation of exhausting the air is as described in the previous steps S1 to S6. After the execution of step S6, the first valve 310 and the fourth valve 340 remain closed.

[0062] Then, step S20 is performed, and the step S20 includes: closing the second valve 320, and implanting the balloon 100 into a human body using a conventional method.

[0063] Then, step S30 is performed, and the step S30 includes: opening the second valve 320, and controlling the volume of the first gas storage part 210 to increase; after the volume of the first gas storage part 210 increases to the maximum volume, keeping the first gas storage part 210 at the maximum volume.

[0064] Then, step S40 is executed, and the step S40 includes: based on the RR interval prediction method, when the end of the left ventricular pumping period is identified, controlling the volume of the first air storage section 210 to gradually decrease; when the pressure in the first air storage section 210 reaches the first preset value, opening the first valve 310, and controlling the volume of the first air storage section 210 to continue to decrease; and closing the first valve 310 when the pressure in the balloon 100 reaches the second predicted value.

[0065] Then, step S50 is executed, and the step S50 includes: opening the fourth valve 340, and controlling the volume of the first air storage part 210 to continue to decrease, and closing the fourth valve 340 when the volume of the first air storage part 210 is reduced to the minimum volume, and keeping the first air storage part 210 at the minimum volume.

[0066] Then, step S60 is executed, and the step S60 includes: based on the RR interval prediction method, when it is identified that the left ventricular contraction generates an electrical signal, controlling the volume of the first air storage section 210 to increase; when the pressure in the first air storage section 210 reaches the third preset value, opening the first valve 310, and controlling the volume of the first air storage section 210 to continue to increase; when the pressure of the balloon 100 reaches the fourth preset value, closing the first valve 310, opening the fourth valve 340, and controlling the volume of the first air storage section 210 to continue to increase; when the first air storage section 210 returns to the maximum volume, closing the fourth valve 340.

[0067] Then, the steps S40 to S60 are repeatedly executed.

[0068] In an embodiment of the utility model, the inflation and deflation mechanism 200 further includes a driving unit 220, which is connected to the first air storage unit 210 and is used to drive a partial structure of the first air storage unit 210 to move so that the volume of the first air storage unit 210 changes.

[0069] Specifically, the first air storage portion 210 has a fixed end 213 and a movable end 214 which are opposite to each other in the axial direction. During use, the fixed end 213 remains stationary, and the movable end 214 is connected to the driving portion 220 and can move axially along the first air storage portion 210 under the drive of the driving portion 220, so that the distance between the movable end 214 and the fixed end 213 in the axial direction of the first air storage portion 210 changes, thereby achieving a change in the volume of the first air storage portion 210.

[0070] Optionally, the driving unit 220 includes a motor 221, a lead screw 222 and a nut 223, the lead screw 222 is connected to the output shaft of the motor 221, the nut 223 is sleeved on the lead screw 222 and connected to the movable end 214; the first air storage unit 210 is coaxially sleeved on the outer peripheral surface of the lead screw 222 located on the side of the nut 223 away from the motor 221, and the fixed end 213 is located on the side of the movable end 214 away from the motor 221.

[0071] Thus, when the motor 221 is running and drives the lead screw 222 to rotate in the first direction, the lead screw 222 drives the nut 223 to move in the direction away from the motor 221 along the axial direction of the lead screw 222, and drives the movable end 214 to move in the direction away from the motor 221, so that the distance from the movable end 214 to the fixed end 213 is reduced, so that the volume of the first gas storage portion 210 is reduced. Conversely, when the motor 221 is running and drives the lead screw 222 to rotate in the second direction, the lead screw 222 drives the nut 223 to move in the direction close to the motor 221 along the axial direction of the lead screw 222, and drives the movable end 214 to move in the direction close to the motor 221, so that the distance from the movable end 214 to the fixed end 213 is reduced, so that the volume of the first gas storage portion 210 is increased. In other words, controlling the volume of the first gas storage part 210 to decrease is actually controlling the motor 221 to drive the lead screw 222 to rotate in the first direction, and controlling the volume of the first gas storage part 210 to decrease is actually controlling the motor 221 to drive the lead screw 222 to rotate in the second direction. The second direction is opposite to the first direction, and one of the second direction and the first direction is clockwise and the other is counterclockwise.

[0072] It should be understood that, assuming that when the motor 221 rotates forward, the lead screw 222 is driven to rotate in the first direction, and when the motor 221 rotates reversely, the lead screw 222 is driven to rotate in the second direction. Then, when the volume of the first gas storage portion 210 decreases from the maximum volume to the minimum volume, the forward rotation stroke of the motor 221 is the fifth predetermined value; when the volume of the first gas storage portion 210 increases from the minimum volume to the maximum volume, the reverse rotation stroke of the motor 221 is the fifth predetermined value.

[0073] Preferably, the nut 223 includes a nut body and a coupling plate (not marked in the figure), the coupling plate is connected to the distal end of the nut body away from the motor 221, and the coupling plate is connected to the movable end 214. Further, the motor 221 is a servo motor, and the lead screw 222 and the nut body are part of the structure of a ball screw. The first air storage portion 210 includes a bellows.

[0074] In addition, it is also preferred that all of the gas flow ports 211 are disposed at the fixed end 213 of the first gas storage unit 210, and the gas exhaust ports 212 are disposed at the movable end 214 of the first gas storage unit 210. In this way, the arrangement of pipelines between the first gas storage unit 210 and the balloon 100, between the first gas storage unit 210 and the second gas storage unit 600, and between the first gas storage unit 210 and the gas source 400 can be simplified, and the movement of the movable end 214 can be prevented from causing damage to these pipelines.

[0075] Those skilled in the art should understand that the aortic balloon counterpulsation system 10 may also include a controller (not shown in the figure), which is communicatively connected to the drive unit 220, the valve group 300, and the monitoring component 500, and is configured to control the opening and closing of each valve according to the stroke of the drive unit 220 and the pressure value monitored by the monitoring component 500, and control the operation of the drive unit 220.

[0076] In addition, the first valve 310 , the second valve 320 , the third valve 330 , and the fourth valve 340 may all be solenoid valves.

[0077] It should also be noted that each component of the intraaortic balloon counterpulsation system 10 provided in the embodiment of the utility model can be disassembled for maintenance or replacement, which reduces the difficulty of maintenance.

[0078] Although the utility model is disclosed as above, it is not limited thereto. Those skilled in the art may make various modifications and variations to the utility model without departing from the spirit and scope of the utility model. Thus, if these modifications and variations of the utility model fall within the scope of the claims of the utility model and their equivalents, the utility model is also intended to include these modifications and variations.

Claims

1. An intraaortic balloon counterpulsation system, characterized in that: include: Balloon; The inflation and deflation mechanism comprises a first gas storage part; the volume of the first gas storage part can be changed, and the first gas storage part is provided with a plurality of gas flow ports; the first gas storage part is connected to the balloon through one of the gas flow ports, and the first gas storage part can also be connected to a gas source through another of the gas flow ports; The valve group includes a first valve and a second valve; the first valve is arranged between the balloon and the corresponding gas flow port, and is used to control the connection and disconnection between the first gas storage part and the balloon; the second valve is arranged between the gas source and the corresponding gas flow port, and is used to control the connection and disconnection between the first gas storage part and the gas source.

2. The intraaortic balloon counterpulsation system according to claim 1, characterized in that: The first gas storage part is also provided with an exhaust port, and the valve group further includes a third valve, which is arranged at the exhaust port and is used to control the connection and disconnection between the first gas storage part and the external environment.

3. The intraaortic balloon counterpulsation system according to claim 1 or 2, characterized in that: The aortic balloon counterpulsation system further comprises a second gas storage part, wherein the second gas storage part is connected to the first gas storage part through one of the gas flow ports; The valve group further includes a fourth valve, which is disposed between the second gas storage portion and the corresponding gas flow port and is used to control the connection and disconnection between the second gas storage portion and the first gas storage portion.

4. The intraaortic balloon counterpulsation system according to claim 3, characterized in that: The second gas storage portion is elastic, and the volume of the second gas storage portion can be changed; When the second air storage portion stores elastic potential energy, the volume of the second air storage portion increases, and when the second air storage portion releases the elastic potential energy, the volume of the second air storage portion decreases.

5. The intraaortic balloon counterpulsation system according to claim 1, characterized in that: The first air storage part has a fixed end and a movable end opposite to each other in its axial direction, and the fixed end of the first air storage part remains stationary; the inflation and deflation mechanism also includes a driving part, which is connected to the movable end of the first air storage part and is used to drive the movable end of the first air storage part to move along its axial direction to change the volume of the first air storage part.

6. The intraaortic balloon counterpulsation system according to claim 5, characterized in that: The first air storage portion includes a bellows.

7. The intraaortic balloon counterpulsation system according to claim 5, characterized in that: The driving part includes a motor, a screw and a nut. The screw is connected to the output end of the motor. The nut is sleeved on the screw and connected to the movable end of the first air storage part. The first air storage part is sleeved on the outer circumferential surface of the screw on the side of the nut away from the motor.

8. The intraaortic balloon counterpulsation system according to claim 1, characterized in that: The aortic balloon counterpulsation system also includes a monitoring component, which is used to monitor the pressure in the first air storage part and the balloon.

9. The intraaortic balloon counterpulsation system according to claim 1, characterized in that: The first valve and the second valve are both solenoid valves; and / or, The intraaortic balloon counterpulsation system also includes the gas source.

10. The intraaortic balloon counterpulsation system according to claim 1, characterized in that: The aortic balloon counterpulsation system also includes a controller, which is communicatively connected to the inflation and deflation mechanism and the valve group, and is configured to regulate the volume of the first air storage portion, and is configured to control the opening or closing of the first valve, and control the opening or closing of the second valve.

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