Balloon pressure control system, control method, and computer-readable storage medium

Abstract

The application provides a balloon pressure control system, a control method and a computer readable storage medium. The balloon pressure control system comprises a pressing machine, a balloon, a balloon catheter and a pressure expansion pump. The balloon catheter comprises a medium cavity, and the outlet of the medium cavity is located in the balloon. The pressure expansion pump comprises a microprocessor and a pumping mechanism. The pumping mechanism comprises a storage bag, a peristaltic pump and a first conveying pipe connected in sequence. The first conveying pipe is connected to the medium cavity, and the storage bag stores filling medium. The method is executed by the microprocessor, and the method comprises the following steps: when receiving a pressing signal, the microprocessor controls the pumping mechanism to pump the filling medium into the balloon through the peristaltic pump and the first conveying pipe according to an initial filling speed and a preset filling time, so that the balloon is filled and completed; and when receiving a release signal, the microprocessor controls the pumping mechanism to pump the filling medium in the balloon out through the peristaltic pump and the first conveying pipe according to an initial discharge speed and a preset discharge time, so that the balloon is discharged and completed.

Description

Technical Field

[0001] This invention relates to the field of medical emergency technology, and more specifically, to a balloon pressure control system, control method, and computer-readable storage medium. Background Technology

[0002] Cardiac arrest refers to the sudden cessation of heartbeat caused by various reasons, which leads to the termination of blood circulation throughout the body, further causing ischemia, hypoxia and dysfunction of various organs and tissues. If the patient does not receive timely rescue, he will die quickly. Clinical treatment is divided into two stages: (1) on-site cardiopulmonary resuscitation; (2) organ function recovery after the restoration of spontaneous circulation. Traditional cardiopulmonary resuscitation methods use manual or mechanical chest compressions to assist in the reconstruction of the heart's pumping function. However, even when implemented properly, the success rate of resuscitation is relatively low. Therefore, the industry urgently needs to develop new hemodynamic technologies that can improve the effectiveness of cardiopulmonary resuscitation based on chest compressions. In recent years, studies have confirmed that the application of temporary aortic blood flow occlusion technology during cardiopulmonary resuscitation using chest compressions can improve the blood perfusion level of key organs such as the heart and brain, thereby improving the success rate of resuscitation.

[0003] Existing temporary aortic blood flow occlusion techniques mainly include: Resuscitative Endovascular Balloon Occlusion of the Aorta (REBOA): This technique places a balloon catheter in the aorta and keeps the balloon inflated throughout the cardiopulmonary resuscitation process to achieve complete aortic occlusion. It is lightweight and easy to operate, but prolonged occlusion time can lead to severe ischemic damage to organs below the occluded site. Intra-Aortic Balloon Pump (IABP): This technique utilizes a counterpulsation mechanism where the balloon deflates during compression and inflates during relaxation, which can partially alleviate distal ischemia. However, most of these devices use gas as the filling medium, requiring gas cylinders and gas lines for storage and delivery. This results in large overall device size, high usage and maintenance costs, and hinders rapid deployment in pre-hospital settings and during transport.

[0004] The equipment currently used for cardiopulmonary resuscitation is large in size and requires complex consumables, resulting in high costs. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the present invention aims to provide a balloon pressure control system, control method, and computer-readable storage medium that can solve the problem of large device size.

[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution:

[0007] In a first aspect, embodiments of this application provide a control method for a balloon pressure control system. The balloon pressure control system includes a pressor, a balloon, a balloon catheter connected to the balloon, and a pressure expansion pump connecting the pressor and the balloon catheter. The balloon catheter includes a medium chamber, the outlet of which is located inside the balloon. The pressure expansion pump includes a microprocessor and a pumping mechanism. The microprocessor receives a press signal and a release signal from the pressor. The pumping mechanism includes a reservoir bag, a peristaltic pump, and a first delivery tube connected in sequence. The first delivery tube is connected to the medium chamber, and the reservoir bag stores inflation medium. The method is executed by the microprocessor and includes: when the microprocessor receives a press signal, controlling the pumping mechanism to pump inflation medium into the balloon through the peristaltic pump and the first delivery tube according to an initial inflation rate and a preset inflation time, so that the balloon is fully inflated; and when the microprocessor receives a release signal, controlling the pumping mechanism to extract inflation medium from the balloon through the peristaltic pump and the first delivery tube according to an initial deflation rate and a preset deflation time, so that the balloon is fully deflated.

[0008] Furthermore, the release time is negatively correlated with the pressing frequency of the presser, while the initial release speed is positively correlated with the pressing frequency of the presser.

[0009] Furthermore, the pressure expansion pump also includes a first sensor connected to a first delivery pipe, and the method includes: determining whether the balloon has been fully inflated based on the balloon pressure value detected by the first sensor.

[0010] Furthermore, based on the balloon pressure value detected by the first sensor, it is determined whether the balloon has been fully inflated, including: when the rate of increase of the balloon pressure value exceeds a preset threshold, the balloon is determined to be fully inflated; when the rate of increase of the balloon pressure value does not exceed the preset threshold, the balloon is determined not to be fully inflated.

[0011] Furthermore, the balloon catheter also includes a blood chamber separate from the medium chamber, with the outlet of the blood chamber located at the proximal end outside the balloon; the pumping mechanism also includes a second delivery tube connected to the blood chamber, and the pressure expansion pump also includes a second sensor connected to the second delivery tube. The method further includes: determining whether the balloon is fully inflated based on the proximal blood pressure value detected by the second sensor.

[0012] Furthermore, based on the proximal blood pressure value detected by the second sensor, it is determined whether the balloon has been fully inflated, including: when the rate of increase of the proximal blood pressure value exceeds a preset blood pressure threshold, the balloon is determined to be fully inflated; when the rate of increase of the proximal blood pressure value does not exceed the preset blood pressure threshold, the balloon is determined to be not fully inflated.

[0013] Furthermore, the pumping mechanism also includes a three-way valve, which includes a valve core and a first valve port, a second valve port, and a third valve port. The first valve port is connected to a first delivery pipe, the second valve port is connected to a second delivery pipe, and the third valve port is connected to a liquid storage bag. The method also includes: before the balloon enters the human body, after venting the balloon, controlling the valve core to rotate to open the first valve port and the third valve port and close the second valve port.

[0014] Furthermore, the peristaltic pump includes a pump tube and a rotor abutting against one side of the pump tube. One end of the pump tube is connected to a storage bag, and the other end of the pump tube is connected to a third valve port. The method further includes: when a pressing signal is received, controlling the rotor to rotate forward in a preset direction to push the filling medium into the first delivery tube through the third valve port and the first valve port; when a release signal is received, controlling the rotor to rotate in the preset direction in the reverse direction to draw the filling medium in the first delivery tube back into the storage bag through the first valve port and the third valve port.

[0015] Secondly, embodiments of this application also provide a balloon pressure control system. A control method using the balloon pressure control system described above includes: a balloon; a balloon catheter connected to the balloon, the balloon catheter including an independent media chamber and a blood chamber, the outlet of the blood chamber located proximal to the outside of the balloon, and the outlet of the media chamber located inside the balloon; a pressor; a pressure expansion pump connected to the pressor and the balloon catheter, the pressure expansion pump including a microprocessor and a pumping mechanism, the microprocessor being used to receive press signals and release signals sent by the pressor; the pumping mechanism including a reservoir bag, a peristaltic pump, a first delivery tube, and a second delivery tube connected in sequence, the first delivery tube connected to the media chamber, the second delivery tube connected to the blood chamber, and the reservoir bag storing an inflation medium; wherein the inflation medium is physiological saline.

[0016] Furthermore, the pressure dilation pump also includes: a first sensor connected to a first delivery tube for detecting the intraballoon pressure value; and a second sensor connected to a second delivery tube for detecting the proximal blood pressure value.

[0017] Furthermore, the first and second sensors are located inside the housing of the pumping mechanism.

[0018] Thirdly, embodiments of this application also provide a computer-readable storage medium storing an executable program that executes a control method for implementing the balloon pressure control system described above.

[0019] The beneficial effects of the embodiments of the present invention are:

[0020] First, by setting the part of the pressure expansion pump that carries the filling medium as a liquid storage bag, the filling medium is determined to be liquid. Compared with the traditional device that requires gas cylinders and gas lines when the filling medium is gas, the size of the device is reduced and the cost is lowered.

[0021] Secondly, in this embodiment of the invention, the balloon is inflated upon receiving a pressing signal, increasing its volume so that when the balloon is inserted into the human body, it can effectively block the aortic blood flow and improve the perfusion effect of the heart and brain. Upon receiving a release signal, the inflation medium is extracted from the balloon to release it, so that when the balloon is inserted into the human body, the blood throughout the body can flow due to the reduction in the volume of the balloon. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly described below.

[0023] Figure 1 This is a schematic diagram illustrating the structure of a balloon pressure control system applied to the human body according to an embodiment of this application;

[0024] Figure 2 This is a schematic diagram of the balloon catheter of a balloon pressure control system according to an embodiment of this application;

[0025] Figure 3 This is a schematic diagram of the main flow of a control method for a balloon pressure control system according to an embodiment of this application;

[0026] Figure 4 This is a schematic diagram of the structure of the pressure expansion pump of the balloon pressure control system according to an embodiment of this application;

[0027] Figure 5 This is a schematic diagram illustrating the process of determining whether the balloon has been fully inflated in a control method of a balloon pressure control system according to an embodiment of this application.

[0028] Figure 6 This is a schematic diagram illustrating the process of determining whether the balloon has been fully inflated in a control method of a balloon pressure control system according to another embodiment of this application.

[0029] Figure 7 This is a schematic diagram illustrating the process of determining whether the balloon has been fully inflated in the control method of the balloon pressure control system shown in other embodiments of this application.

[0030] Figure 8 This is a schematic diagram of the peristaltic pump in a balloon pressure control system according to an embodiment of this application;

[0031] Figure 9 This is a schematic diagram showing the connection between the pressure expansion pump, balloon catheter, and balloon in a balloon pressure control system according to an embodiment of this application.

[0032] Figure 10 This is a schematic diagram of the structure of a balloon pressure control system according to an embodiment of this application;

[0033] Figure 11 for Figure 10 Enlarged view of the structure at point A in the diagram;

[0034] Figure 12 for Figure 10 Enlarged view of the structure at point B in the diagram.

[0035] Reference numerals: 1. Pressing device; 2. Balloon; 3. Balloon catheter; 31. Medium chamber; 32. Blood chamber; 4. Pressure expansion pump; 41. Pumping mechanism; 411. Liquid storage bag; 412. Peristaltic pump; 4121. Pump tube; 4122. Rotor; 413. First delivery tube; 414. Second delivery tube; 415. First sensor; 416. Second sensor; 427. Power supply module; 42. Three-way valve; 421. First valve port; 422. Second valve port; 423. Third valve port; 43. Signal connector. Detailed Implementation

[0036] In the description of this application, it should be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0037] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0038] See Figure 1-6 This application provides a control method for a balloon pressure control system, applied to a balloon pressure control system. The balloon pressure control system includes a pressor 1, a balloon 2, a balloon catheter 3 connected to the balloon 2, and a pressure expansion pump 4 connecting the pressor 1 and the balloon catheter 3. The balloon catheter 3 includes a medium chamber 31, the outlet of which is located inside the balloon 2. The pressure expansion pump 4 includes a microprocessor and a pumping mechanism 41. The microprocessor receives press and release signals from the pressor 1. The pumping mechanism 41 includes a reservoir bag 411, a peristaltic pump 412, and a first delivery tube 413 connected in sequence. The first delivery tube 413 is connected to the medium chamber 31, and the reservoir bag 411 stores inflation medium.

[0039] The control method is executed by the microprocessor and may include:

[0040] When the microprocessor receives the pressing signal, it controls the pumping mechanism 41 to pump the filling medium into the balloon 2 through the peristaltic pump 412 and the first delivery tube 413 according to the initial filling speed and the preset filling time, so that the balloon 2 is fully inflated.

[0041] Among them, balloon 2 is fully inflated, which generally means that the volume of balloon 2 reaches the level that can block the blood vessel, that is, the outer wall of balloon 2 and the inner wall of the blood vessel are in an interference fit. The inflation rate is the fluid volume of the inflation medium injected into balloon 2 per unit time, which reflects how fast balloon 2 expands. The inflation time is the time from the start of the injection of the inflation medium to the balloon 2 reaching the preset pressure or volume.

[0042] Upon receiving the release signal, the control pumping mechanism 41 extracts the filling medium inside the balloon 2 through the peristaltic pump 412 via the first delivery pipe 413 according to the initial release speed and the preset release time, so that the balloon 2 is released.

[0043] The completion of balloon 2 deflation generally refers to the pressure or volume inside balloon 2 dropping below a safe threshold. The system determines that balloon 2 has completely retracted and can be safely withdrawn from balloon catheter 3. The deflation rate is the volume of filling medium extracted from balloon 2 per unit time, reflecting how quickly balloon 2 retracts. The deflation time is the time from the start of balloon 2 deflation to the pressure or volume inside balloon 2 dropping to the deflation completion standard.

[0044] In the above embodiment, when the microprocessor receives the pressing signal, it controls the pumping mechanism 41 to pump the filling medium into the balloon 2, increasing the volume of the balloon 2. This allows the balloon 2 to block the aortic blood flow when it is inserted into the human body, thereby guiding the limited blood flow generated when the presser 1 performs the pressing operation into important organs such as the coronary arteries of the heart and the brain, thus improving the effect of cardiac and cerebral perfusion. When the microprocessor receives the release signal, it controls the pumping mechanism 41 to extract the filling medium from the balloon 2, reducing the volume of the balloon 2. This allows the balloon 2 to restore blood flow throughout the body when it is inserted into the human body, thus allowing blood to flow back to the heart.

[0045] This embodiment of the application sets the filling medium in the pumping mechanism 41 of the pressure expansion pump 4 to a liquid. Compared with the equipment in the prior art that sets gas cylinders and gas lines, this application only needs to inject it into the storage bag 411 for storage, which reduces the size of the entire device, further improves its portability, and reduces costs. In addition, this embodiment of the application uses the presser 1 and the pressure expansion pump 4 to cooperate. When a pressing signal is received, that is, during the pressing of the presser 1, the balloon 2 is controlled to inflate, which can block the forward blood flow of the aorta and guide the blood to the heart and brain, thereby improving the effect of cardiac and cerebral perfusion. When a release signal is received, the balloon 2 is controlled to deflate, which can restore normal blood flow and avoid affecting the blood supply to other organs.

[0046] In one embodiment, this application can achieve partial occlusion of the aorta by alternating between receiving a pressing signal to control the inflation of the balloon 2 and receiving a release signal to control the deflation of the balloon 2. That is, by controlling the balloon 2 to inflate for a first preset time and then controlling the balloon 2 to deflate for a second preset time, and repeating this process, so as to reduce the problem of ischemic damage to organs below the occlusion site.

[0047] The first and second preset times can be automatically adjusted according to the patient's actual situation.

[0048] In the above embodiments, the release time is negatively correlated with the pressing frequency of the presser 1, while the initial release speed is positively correlated with the pressing frequency of the presser 1. For example, a higher pressing frequency per minute results in a shorter release time and a faster release speed, while a lower pressing frequency per minute allows for a longer release time and a slower release speed. The specific release time is dynamically adjusted according to the actual pressing frequency, ensuring that the balloon 2 can be fully released while the presser 1 is in the release phase.

[0049] like Figure 2 As shown, in one embodiment, the balloon catheter 3 further includes a blood chamber 32 separate from the medium chamber 31, and the outlet of the blood chamber 32 is located at the proximal end outside the balloon 2.

[0050] The pumping mechanism 41 also includes a second delivery tube connected to the blood chamber 32.

[0051] The pressure expansion pump 4 also includes a first sensor 415 and a second sensor 416. The first sensor 415 is connected to the first delivery tube 413 and is used to detect the intraballoon pressure. The second sensor 416 is connected to the second delivery tube 414 and is used to detect the proximal blood pressure.

[0052] In one embodiment, such as Figure 5 As shown, the control method of the above-mentioned balloon pressure control system further includes steps S410-S440:

[0053] Step S410: Determine whether the balloon 2 has been fully inflated based on the balloon pressure value detected by the first sensor 415.

[0054] In this context, balloon 2 being fully inflated generally means that the volume of balloon 2 has reached a level that can block the blood vessel, that is, the outer wall of balloon 2 and the inner wall of the blood vessel are in an interference fit. The first sensor 415 monitors the internal pressure value of balloon 2 in real time to determine the degree of inflation of balloon 2.

[0055] Step S420: Determine whether the rate of increase of the intraballoon pressure exceeds a preset threshold.

[0056] This involves determining whether there is a significant upward trend in the intraballoon pressure. The preset threshold is a value determined based on a safe threshold for the rate of increase in intraballoon pressure. Generally, if the rate of change exceeds the preset threshold, it indicates that the rate of increase in intraballoon pressure suddenly becomes faster than normal.

[0057] Step S430: When the rate of increase of the pressure inside the balloon exceeds a preset threshold, it is determined that the balloon 2 is fully inflated.

[0058] Step S440: When the rate of increase of the pressure inside the balloon does not exceed the preset threshold, it is determined that the balloon 2 has not been fully inflated.

[0059] In another embodiment, such as Figure 6 As shown, the control method of the above-mentioned balloon pressure control system further includes steps S510-S540:

[0060] Step S510: Determine whether the balloon 2 has been fully inflated based on the proximal blood pressure value detected by the second sensor 416.

[0061] Step S520: Determine whether the rate of increase of the proximal blood pressure value exceeds the preset blood pressure threshold.

[0062] In step S520 above, the preset blood pressure threshold is a pre-set blood pressure critical value in the blood vessel located at the proximal end of the balloon 2, which is used to determine whether the proximal blood pressure value is within the normal range.

[0063] Step S530: When the rate of increase of the proximal blood pressure exceeds the preset blood pressure threshold, the balloon 2 is determined to be fully inflated.

[0064] Step S540: When the rate of increase of the proximal blood pressure value does not exceed the preset blood pressure threshold, it is determined that the balloon 2 has not been fully inflated.

[0065] In this embodiment, the second sensor 416 monitors the proximal blood pressure value, and the closed-loop feedback system can automatically adjust the inflation or deflation of the balloon 2 to prevent the balloon 2 from being over-inflated, which could lead to vascular rupture or distal ischemia.

[0066] In other embodiments, such as Figure 7 As shown, the control method of the above-mentioned balloon pressure control system further includes steps S610-S640:

[0067] Step S610: Determine whether the balloon 2 has been fully inflated based on the relationship between the actual inflation volume and the preset target inflation volume.

[0068] The preset target inflation volume can be represented by the amount of inflation medium required when the volume of balloon 2 reaches the maximum safety threshold. In one embodiment, the total inflation volume is 25 ml.

[0069] In one embodiment, a flow meter is provided in the pumping mechanism 41. The flow meter is connected in series between the peristaltic pump 412 and the balloon 2 to detect pulse signals in real time and feed them back to the microprocessor. The microprocessor calculates the actual filling volume based on the pulse signals.

[0070] Step S620: Determine whether the actual filling volume has reached the target filling volume.

[0071] Step S630: If the actual inflation volume reaches the target inflation volume, the balloon 2 is determined to be fully inflated.

[0072] Step S640: If the actual inflation volume does not reach the target inflation volume, it is determined that the balloon 2 has not been fully inflated.

[0073] In one embodiment, such as Figure 4 As shown, the pumping mechanism 41 also includes a three-way valve 42. The three-way valve 42 includes a valve core and a first valve port 421, a second valve port 422, and a third valve port 423. The first valve port 421 is connected to the first delivery pipe 413, the second valve port 422 is connected to the second delivery pipe 414, and the third valve port 423 is connected to the liquid storage bag 411. The control method of the balloon pressure control system provided in this embodiment of the application also includes:

[0074] Before the balloon 2 enters the human body, after the balloon 2 is vented, the valve core is controlled to rotate to open the first valve port 421 and the third valve port 423, and close the second valve port 422.

[0075] This embodiment of the application provides a three-way valve 42 in the pumping mechanism 41. By controlling the working state of the three-way valve 42, the flow path of the filling medium stored in the liquid storage bag 411 can be adjusted, so that the volume of the balloon 2 can be accurately increased or decreased through the action of the filling medium during the emergency rescue.

[0076] See Figure 8 In one embodiment, the peristaltic pump 412 includes a pump tube 4121 and a rotor 4122 abutting against one side of the pump tube 4121. One end of the pump tube 4121 is connected to a liquid storage bag 411, and the other end of the pump tube 4121 is connected to a third valve port 423. The rotor 4122 is used to squeeze the pump tube 4121, and by rotating in the forward direction, the movement direction of the squeezing point is rotated in the forward direction, thereby causing the liquid in the pump tube 4121 to flow in the forward direction. By rotating in the reverse direction, the movement direction of the squeezing point is rotated in the reverse direction, thereby causing the liquid in the pump tube 4121 to flow in the reverse direction.

[0077] In one embodiment, the control method of the above-mentioned balloon pressure control system further includes:

[0078] When a pressing signal is received, the control rotor 4122 rotates in the preset direction to push the filling medium through the third valve port 423 and the first valve port 421 into the first delivery pipe 413, thereby delivering the filling medium into the balloon 2 to achieve balloon 2 inflation.

[0079] Upon receiving a release signal, the control rotor 4122 rotates in the opposite direction to a preset direction to draw the filling medium back into the storage bag 411 through the first valve port 421 and the third valve port 423, thereby extracting the filling medium from the balloon 2 to release the balloon 2.

[0080] The preset direction is the direction in which the filling medium flows towards the balloon.

[0081] Specifically, in one embodiment, when the pumping mechanism 41 is activated by pressing the pumping machine 1, it performs the inflation action of the balloon 2 through signal transmission between itself and the pumping machine 1:

[0082] When the microprocessor receives the pressing signal, it controls the valve core of the three-way valve 42 to rotate, thereby opening the first valve port 421 and the third valve port 423 and closing the second valve port 422. This closes the passage of the three-way valve 42 toward the second delivery pipe 414, connecting the passage between the first delivery pipe 413 and the liquid storage bag 411. It also controls the rotor 4122 to rotate clockwise, pushing the filling medium through the third valve port 423 and the first valve port 421 into the first delivery pipe 413, thereby delivering the filling cut-off to the balloon 2, causing the balloon 2 to inflate.

[0083] When the pumping mechanism 41 is pressed and lifted by the presser 1, the balloon 2 is released through signal transmission between the pumping mechanism 41 and the presser 1.

[0084] When the microprocessor receives the release signal, it keeps the first valve port 421 and the third valve port 423 of the three-way valve 42 open and the second valve port 422 closed, so that the passage of the three-way valve 42 toward the second delivery pipe 414 is still closed, connecting the passage between the first delivery pipe 413 and the liquid storage bag 411, and controlling the rotor 4122 to rotate counterclockwise, so that the filling medium in the balloon 2 is reversed by the rotor 4122 of the peristaltic pump 412 and sucked back into the liquid storage bag 411 through the first valve port 421 and the third valve port 423, so as to complete the release of the balloon 2.

[0085] The control method of the balloon pressure control system provided in this application embodiment realizes the inflation of the balloon 2 when the presser 1 is pressed and the deflation is synchronized when the presser 1 is released. Through communication and coordination between the presser 1, the pumping mechanism 41 and the balloon 2, the signals of the microprocessor, the first sensor 415 and the second sensor 416 are synchronized, which can improve the accuracy of coordination. During the operation of the presser 1, the blood supply distribution is controlled, so that the blood is rationally distributed, the perfusion effect of the heart and brain is improved, and thus the efficiency of emergency work is improved.

[0086] Combination Figure 4 , Figure 8 See Figure 9-12 This application also provides a balloon pressure control system, and the control method of the balloon pressure control system provided in the above embodiment includes a balloon 2, a balloon catheter 3, a presser 1 and a pressure expansion pump 4.

[0087] The balloon catheter 3 is connected to the balloon 2. The balloon catheter 3 includes an independent media chamber 31 and a blood chamber 32. The outlet of the blood chamber 32 is located at the proximal end outside the balloon 2, and the outlet of the media chamber 31 is located inside the balloon 2.

[0088] The pressure dilation pump 4 is connected to the presser 1 and the balloon catheter 3. The pressure dilation pump 4 includes a microprocessor and a pumping mechanism 41. The microprocessor is used to receive signals sent by the presser 1, including pressing signals and release signals.

[0089] The pumping mechanism 41 includes a storage bag 411, a peristaltic pump 412, a first delivery pipe 413 and a second delivery pipe 414 connected in sequence. The first delivery pipe 413 is connected to the medium chamber 31 and the second delivery pipe 414 is connected to the blood chamber 32. The storage bag 411 stores a filling medium.

[0090] In this embodiment, the filling medium is physiological saline. The filling medium used in the balloon 2 is set to liquid, so that the filling medium is a liquid storage bag 411. Compared with the prior art when the filling medium is gas, which requires an additional structure of gas cylinder gas circuit system, this embodiment can reduce the volume of balloon pressure control system, make it easy to carry, simple to operate, applicable to multiple scenarios, and reduce costs.

[0091] In one embodiment, the total fluid filling volume of the balloon 2 can be 30 ml, which can be determined according to the actual total filling volume of the balloon 2 used.

[0092] In one embodiment, the pumping mechanism 41 further includes a three-way valve 42 and a peristaltic pump 412.

[0093] The three-way valve 42 includes a valve core and a first valve port 421, a second valve port 422 and a third valve port 423. The first valve port 421 is connected to a first delivery pipe 413 and the second valve port 422 is connected to a second delivery pipe 414. By rotating the valve core to the target position, the first valve port 421, the second valve port 422 and the third valve port 423 can be opened or closed.

[0094] The peristaltic pump 412 includes a pump tube 4121 and a rotor 4122 abutting against one side of the pump tube 4121. One end of the pump tube 4121 is connected to a liquid storage bag 411, and the other end of the pump tube 4121 is connected to a third valve port 423 so that the third valve port 423 and the liquid storage bag 411 are connected. By rotating the rotor 4122, the filling medium in the pump tube 4121 is squeezed.

[0095] In one embodiment, the presser 1 can be a CPR presser or a hand press detector, such as a CPR sensor or wristband, capable of accurately detecting the initiation time of manual pressing and releasing.

[0096] In one embodiment, the housing of the pressure expansion pump 4 is provided with a signal connector 43 connected to the microprocessor. The signal connector 43 is connected to the first sensor 415, the second sensor 416, and the peristaltic pump 412 via an internal connection line, and the signal connector 43 is connected to the press 1 via an external connection line for transmitting signals to the microprocessor.

[0097] In another embodiment, the housing of the pressure expansion pump 4 is provided with a wireless transmission module connected to a microprocessor, including a WIFI module or a Bluetooth module, etc. The wireless transmission module of the pressure expansion pump 4 is wirelessly connected to the wireless transmission module in the press 1 to transmit the signal sent by the press 1.

[0098] In one embodiment, the pressure expansion pump 4 further includes a power supply module 427 connected to the microprocessor for providing electrical power.

[0099] In one embodiment, the power supply module 427 may be a battery.

[0100] In one embodiment, the balloon 2 is made of a polymer material, such as polyurethane or silicone rubber, which has good flexibility and pressure resistance. When applied to the human body, it is placed in an appropriate position in the patient's aorta through the balloon catheter 3, such as in the descending aorta, which can effectively block the forward blood flow of the aorta and improve the accuracy of blood flow blocking.

[0101] In another embodiment, the balloon 2 is made of polyurethane, which has good flexibility and pressure resistance. The balloon 2 is placed in the descending aorta distal to the left subclavian artery through the balloon catheter 3, which can achieve more accurate blood flow occlusion.

[0102] In one embodiment, the pressure expansion pump 4 further includes a first sensor 415 and a second sensor 416.

[0103] The first sensor 415 is connected to the first delivery tube 413 and is used to detect the intraballoon pressure value. The second sensor 416 is connected to the second delivery tube 414 and is used to detect the proximal blood pressure value.

[0104] In one embodiment, the first sensor 415 and the second sensor 416 are located inside the housing of the pumping mechanism 41.

[0105] In another embodiment, the first sensor 415 and the second sensor 416 may be located outside the housing of the pumping mechanism 41.

[0106] This application also provides a computer-readable storage medium storing an executable program that executes the control method of the balloon pressure control system provided in the above embodiments.

[0107] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0108] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0109] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A balloon pressure control system for use in a pre-hospital care scenario, characterized in that, The balloon pressure control system comprises a pressing machine, a balloon, a balloon catheter connected with the balloon, and a pressure expansion pump connected with the pressing machine and the balloon catheter; the balloon catheter comprises a medium cavity, and an outlet of the medium cavity is located in the balloon; the pressure expansion pump comprises a microprocessor and a pumping mechanism; the microprocessor is used for receiving a pressing signal and a release signal sent by the pressing machine; the pumping mechanism comprises a storage bag, a peristaltic pump, and a first conveying pipe connected with the medium cavity in sequence; the storage bag stores filling medium; and the microprocessor is used for: controlling the pumping mechanism to pump the filling medium into the balloon through the peristaltic pump and the first conveying pipe according to an initial filling speed and a preset filling time when the pressing signal is received, so as to complete filling of the balloon; controlling the pumping mechanism to pump the filling medium out of the balloon through the peristaltic pump and the first conveying pipe according to an initial discharge speed and a preset discharge time when the release signal is received, so as to complete discharge of the balloon; the balloon catheter further comprises a blood cavity independent of the medium cavity, and an outlet of the blood cavity is located at a proximal end outside the balloon; the pumping mechanism further comprises a second conveying pipe connected with the blood cavity; the pressure expansion pump further comprises a second sensor connected with the second conveying pipe; and the microprocessor is further used for: judging whether the balloon is filled according to a proximal end blood pressure value detected by the second sensor; wherein the pumping mechanism further comprises a three-way valve comprising a valve core and a first valve port, a second valve port, and a third valve port; the first valve port is connected with the first conveying pipe; the second valve port is connected with the second conveying pipe; the third valve port is connected with the storage bag; and the microprocessor is further used for controlling a working state of the three-way valve, so as to adjust a flow path of the filling medium stored in the storage bag.

2. The balloon pressure control system of claim 1, wherein, The discharge time and the pressing frequency of the pressing machine are in a negative correlation, and the initial discharge speed and the pressing frequency of the pressing machine are in a positive correlation.

3. The balloon pressure control system of claim 1, wherein, The pressure expansion pump further comprises a first sensor connected with the first conveying pipe; and the microprocessor is used for: determining whether the balloon is filled according to a balloon internal pressure value detected by the first sensor.

4. The balloon pressure control system of claim 3, wherein, The method for determining whether the balloon is filled according to the balloon internal pressure value detected by the first sensor comprises: determining that the balloon is filled when a rising rate change speed of the balloon internal pressure value exceeds a preset threshold value; and determining that the balloon is not filled when the rising rate change speed of the balloon internal pressure value does not exceed the preset threshold value.

5. The balloon pressure control system of claim 1, wherein, The method for determining whether the balloon is filled according to the proximal end blood pressure value detected by the second sensor comprises: determining that the balloon is filled when a rising rate change speed of the proximal end blood pressure value exceeds a preset blood pressure threshold value; and determining that the balloon is not filled when the rising rate change speed of the proximal end blood pressure value does not exceed the preset blood pressure threshold value.

6. The balloon pressure control system of claim 1, wherein, The microprocessor is further used for: Before the balloon enters the human body, the valve core is controlled to rotate to open the first valve port and the third valve port and close the second valve port after the balloon is exhausted.

7. The balloon pressure control system of claim 6, wherein, The peristaltic pump comprises a pump tube and a rotor abutting against one side of the pump tube, one end of the pump tube being connected to the liquid storage bag, the other end of the pump tube being connected to the third valve port, and the microprocessor is further configured to: When the pressing signal is received, the rotor is controlled to rotate in a forward direction to push the filling medium in the first delivery tube through the third valve port and the first valve port; When the releasing signal is received, the rotor is controlled to rotate in a reverse direction to suck the filling medium in the first delivery tube back to the liquid storage bag through the first valve port and the third valve port.

8. The balloon pressure control system of claim 1, wherein, The filling medium is physiological saline.

9. The balloon pressure control system of claim 8, wherein, The pressure expansion pump further comprises: a first sensor connected to the first delivery tube and configured to detect the pressure value in the balloon; a second sensor connected to the second delivery tube and configured to detect the blood pressure value at the proximal end.

10. The balloon pressure control system of claim 9, wherein, The first sensor and the second sensor are located in the housing of the pumping mechanism.

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