Eccentric rotor type gas circuit combination device for assisting in counterpulsation of balloon in aorta

Abstract

The invention discloses an eccentric rotor type gas circuit combination device for assisting balloon counterpulsation in an aorta, and relates to the field of medical instruments, the eccentric rotor type gas circuit combination device comprises a shell, and a helium perfusion device, a balloon driving device and a main control circuit are arranged in the shell; the helium filling device is mainly composed of a helium storage bottle, a high-pressure gas pipeline, a high-pressure gas pressure sensor, a gas pressure reducing valve, a first low-pressure gas pipeline, a first normally-closed gas electromagnetic valve and a second low-pressure gas pipeline. The helium storage bottle is connected with the high-pressure gas pressure sensor and the gas pressure reducing valve through the high-pressure gas pipeline. The gas circuit structure is simple and durable, protection measures are complete, the time characteristic of driving the IAB is better than that of imported IABP, power consumption is low in the process of driving the IAB to work, the simple overall structure enables the size to be smaller, the weight is lower, under the condition that the power consumption is low, the device can be carried by a patient for use, and the device is convenient to use. And the application scene is wider.

Description

TECHNICAL FIELD

[0001] The present application relates to the medical instrument technology, specifically relates to a kind of eccentric rotor type gas path combination device of intra-aortic balloon counterpulsation auxiliary. BACKGROUND

[0002] Intra-aortic balloon is the common way for treating mild heart failure at present.Long column balloon is placed between carotid artery and renal artery in descending aorta, and balloon is in "contraction" state during cardiac ejection period, and balloon is in "swelling" state during cardiac diastole period.Heart load is reduced during ejection period, and cardiac coronary blood perfusion is improved during diastole period, so as to reduce heart load, improve cardiac blood supply, and then achieve the purpose of treating heart failure.Current market does not have domestic intra-aortic balloon (Intra-Aortic Balloon, IAB) and equipment (Intra-Aortic Balloon Pump, IABP) for driving balloon work.The gas path in imported equipment is complex, and corresponding space is needed for vacuum pump, gas cavity and safety disc inside, so that the overall equipment is large in size and high in weight.Although trolley can be used to push and pull the equipment, due to high power consumption, high weight and large size, the equipment can only be used in fixed place, such as ambulance or operating room, and cannot be carried. SUMMARY

[0003] The purpose of the present application is to provide an eccentric rotor type gas path combination device of intra-aortic balloon counterpulsation auxiliary, to solve the above problems in the prior art.

[0004] In order to achieve the above-mentioned purpose, the present application provides the following technical scheme: an eccentric rotor type gas path combination device of intra-aortic balloon counterpulsation auxiliary, comprising a shell, a helium gas perfusion device, a balloon driving device and a main control circuit are arranged in the shell; The helium gas perfusion device mainly comprises a helium gas storage bottle, a high-pressure gas pipeline, a high-pressure gas pressure sensor, a gas pressure reducing valve, a first low-pressure gas pipeline, a first normally closed gas electromagnetic valve and a second low-pressure gas pipeline, the helium gas storage bottle is connected with the high-pressure gas pressure sensor and the gas pressure reducing valve through the high-pressure gas pipeline, and the gas pressure reducing valve is connected with the first normally closed gas electromagnetic valve through the first low-pressure gas pipeline; The balloon driving device mainly comprises a normally open gas electromagnetic valve, a third low-pressure gas pipeline, a blood detector, a balloon interface, a low-pressure gas pressure sensor, a second normally closed gas electromagnetic valve, a cylinder air nozzle and a cylinder, the first normally closed gas electromagnetic valve is connected with the normally open gas electromagnetic valve, the low-pressure gas pressure sensor, the second normally closed gas electromagnetic valve and the cylinder air nozzle through the second low-pressure gas pipeline, the normally open gas electromagnetic valve is connected with the balloon interface through the third low-pressure gas pipeline, and the third low-pressure gas pipeline passes through the blood detector; The cylinder nozzle is connected to the cylinder body, and the inside of the cylinder body is equipped with a central positioning gear and a rotor. The two sides of the cylinder body are sealed by cover plates.

[0005] Furthermore, the balloon interface is connected to the inlet (outlet) tube of the external balloon.

[0006] Furthermore, the second normally closed gas solenoid valve is externally connected to a fourth low-pressure gas pipeline, and the second normally closed gas solenoid valve is connected to a pneumatic silencer through the fourth low-pressure gas pipeline.

[0007] Furthermore, a stepper motor is installed inside the housing, and an eccentric motor shaft is installed on the stepper motor. An eccentric rotor journal is installed at the end of the eccentric motor shaft. The end of the eccentric rotor journal is fixedly connected to the rotor. A top seal is installed at the end of the rotor. An internal rotor gear is installed inside the rotor. A sealing gasket is provided at the connection between the internal rotor gear and the rotor. The internal rotor gear meshes with the center positioning gear.

[0008] Furthermore, the high-pressure gas pressure sensor, the first normally closed gas solenoid valve, the normally open gas solenoid valve, the low-pressure gas pressure sensor, the blood detector, and the second normally closed gas solenoid valve are all electrically connected to the main control circuit.

[0009] Furthermore, the blood detector monitors whether blood is present in the tubing in the form of a photoelectric sensor.

[0010] Compared with the prior art, the eccentric rotor-type airway combination device for intra-aortic balloon counterpulsation provided by the present invention has the following beneficial effects: 1. In this invention, by setting a high-pressure gas pressure sensor, the remaining gas in the helium storage cylinder can be monitored in real time, and the user can be promptly reminded of the remaining helium level.

[0011] In this invention, the driving source for inflating and deflating the IAB relies on a mechanical structure to limit the total amount of air that can be inflated into the IAB, which makes it less likely to cause over-inflation of the IAB. Furthermore, the driving source consumes less power and has less electromagnetic interference to the outside world. At the same time, the rotor is driven by a stepper motor connected to the eccentric shaft of the rotor, and the rotor runs continuously in a circular motion. The driving method is direct, fast, and has high energy conversion efficiency.

[0012] In this invention, independent high-pressure gas pressure sensors and low-pressure gas pressure sensors are provided for the internal pressure of the IAB, which can monitor the pressure at various key time points of the IAB in real time to determine whether the balloon has ruptured.

[0013] In this invention, by setting up an independent blood detector and using the photoelectric detection principle, the reaction is sensitive. Furthermore, through multiple restrictions and protections, it can effectively ensure that the IAB does not rupture, or quickly detect IAB rupture and cut off the IAB's gas path.

[0014] In this invention, helium is used to fill the IAB. Helium is a low-molecular-weight inert gas, and a small amount of leakage is unlikely to cause thrombosis. It has low viscosity and high permeability, which allows it to pass through the IAB tubing at a faster speed, thus making the IAB state more synchronized with the heart state. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0016] Fig. 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention; Fig. 2 This is a schematic diagram of the rotor structure provided in an embodiment of the present invention; Fig. 3 This is a schematic diagram showing the relationship between the rotor's operating position and the gas flow direction in the cylinder, provided in an embodiment of the present invention.

[0017] Explanation of reference numerals in the attached figures: 1. Helium storage cylinder; 2. High-pressure gas pipeline; 3. High-pressure gas pressure sensor; 4. Gas pressure reducing valve; 5. First low-pressure gas pipeline; 6. First normally closed gas solenoid valve; 7. Second low-pressure gas pipeline; 8. Normally open gas solenoid valve; 9. Third low-pressure gas pipeline; 10. Blood detector; 11. Balloon interface; 12. Low-pressure gas pressure sensor; 13. Second normally closed gas solenoid valve; 14. Pneumatic silencer; 15. Cylinder nozzle; 16. Rotor; 1601. Top seal; 1602. Sealing gasket; 1603. Rotor internal gear; 1604. Eccentric shaft rotor journal; 1605. Eccentric shaft motor shaft; 17. Center positioning gear; 18. Cover plate; 19. Cylinder. Detailed Implementation

[0018] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0019] Example 1: Please see Figs. 1-3 An eccentric rotor-type airway combination device for intra-aortic balloon counterpulsation assistance includes a housing, and inside the housing are a helium perfusion device, a balloon driving device, and a main control circuit. The helium filling device mainly consists of a helium storage cylinder 1, a high-pressure gas pipeline 2, a high-pressure gas pressure sensor 3, a gas pressure reducing valve 4, a first low-pressure gas pipeline 5, a first normally closed gas solenoid valve 6, and a second low-pressure gas pipeline 7. The helium storage cylinder 1 is connected to the high-pressure gas pressure sensor 3 and the gas pressure reducing valve 4 through the high-pressure gas pipeline 2, and the gas pressure reducing valve 4 is connected to the first normally closed gas solenoid valve 6 through the first low-pressure gas pipeline 5. The balloon drive device mainly consists of a normally open gas solenoid valve 8, a third low-pressure gas line 9, a blood detector 10, a balloon interface 11, a low-pressure gas pressure sensor 12, a second normally closed gas solenoid valve 13, a cylinder nozzle 15, and a cylinder 19. The first normally closed gas solenoid valve 6 is connected to the normally open gas solenoid valve 8, the low-pressure gas pressure sensor 12, the second normally closed gas solenoid valve 13, and the cylinder nozzle 15 through the second low-pressure gas line 7. The normally open gas solenoid valve 8 is connected to the balloon interface 11 through the third low-pressure gas line 9, and the third low-pressure gas line 9 passes through the blood detector 10. The cylinder valve 15 is connected to the cylinder 19. The cylinder 19 is equipped with a central positioning gear 17 and a rotor 16. The two sides of the cylinder 19 are sealed by cover plates 18.

[0020] It should be noted that the balloon interface 11 is connected to the inlet (outlet) air tube of the external balloon.

[0021] In this embodiment, a stepper motor is installed inside the housing, and an eccentric shaft motor shaft 1605 is installed on the stepper motor. An eccentric shaft rotor journal 1604 is installed at the end of the eccentric shaft motor shaft 1605. The end of the eccentric shaft rotor journal 1604 is fixedly connected to the rotor 16. A top seal 1601 is installed at the end of the rotor 16. An internal rotor gear 1603 is installed inside the rotor 16. A sealing gasket 1602 is provided at the connection between the internal rotor gear 1603 and the rotor 16. The internal rotor gear 1603 meshes with the center positioning gear 17.

[0022] It should be noted that the rotor 16 is inside the cylinder 19 and relies on the interlocking of the rotor internal gear 1603 and the central positioning gear 17, as well as the driving force of the eccentric shaft rotor journal 1604 to achieve circumferential motion. The stepper motor provides power to the rotor 16 through the eccentric shaft motor shaft 1605.

[0023] In addition, the top seal 1601 improves the fit between the rotor 16 and the inner wall of the cylinder 19, while the sealing gasket 1602 and the cover plate 18 ensure airtightness inside the cylinder 19.

[0024] In this embodiment, the high-pressure gas pressure sensor 3, the first normally closed gas solenoid valve 6, the normally open gas solenoid valve 8, the low-pressure gas pressure sensor 12, the blood detector 10, and the second normally closed gas solenoid valve 13 are all electrically connected to the main control circuit.

[0025] In this embodiment, the blood detector 10 monitors the presence of blood in the tubing using a photoelectric sensor. When blood is detected in the tubing, it sends an electrical signal to the main control circuit for processing. The blood detector 10 also assists in determining whether the IAB (Intra-Anaerobic Bomb) is damaged. During operation, the helium storage cylinder 1 is connected to the high-pressure gas pressure sensor 3. The high-pressure gas pressure sensor 3 converts the pressure signal into an electrical signal and transmits it to the main control circuit. The main control circuit can monitor in real time, promptly remind the user of the remaining helium level, and refill the helium as needed.

[0026] When the first normally closed gas solenoid valve 6 is turned on, low-pressure helium gas fills the cylinder 19 through the first low-pressure gas pipeline 5. After filling is completed, the first normally closed gas solenoid valve 6 is closed. At this time, the cylinder 19 is driven to provide the power to fill and discharge helium gas into the balloon.

[0027] During use, the first normally closed gas solenoid valve 6 and the second normally closed gas solenoid valve 13 are closed, and the normally open gas solenoid valve 8 is opened. The rotor 16 moves in a circular motion within the cylinder 19 to achieve the inflation and deflation of the IAB. During this process, the low-pressure gas pressure sensor 12 converts the pressure in the IAB into an electrical signal in real time and transmits it to the main control circuit to determine whether there is a leak, IAB damage, or IAB interface separation.

[0028] Currently available intra-aortic balloon pump assist devices include foreign brands such as Datascope Corp. (CARDIOSAVE Hybrid, CARDIOSAVE Rescue, CS100, and CS300); Arrow International, Inc. (IAP-0400 and IAP-0500); and domestic brands such as Nuoling Biotechnology (Yangzhou) Co., Ltd. (A100 and A200); and Anhui Tongling Bionic Technology Co., Ltd. (TL-IABP-100). These products are all trolley-type devices, which are large and heavy, making them unsuitable for personal portability.

[0029] Portability is superior to existing devices: In this patent, the effective volume of the drive air chamber in the drive device part is 65cc. The drive part uses alloy metal with a hollowing process, which can reduce the weight to less than 1 kg. Due to the reduction in size and weight, it provides the premise for being portable.

[0030] For balloon (IAB) actuation time: In the drive unit, the gas is directly driven by the mechanical structure to inflate or de-inflate the balloon, reducing the intermediate work transmission links and accelerating the drive speed to less than 0.1 seconds.

[0031] Power consumption is better than existing devices: The drive unit directly drives the helium gas inside the balloon according to the patient's heart rate. This means that the drive unit operates discontinuously, which reduces the overall average power. Therefore, the average power can be as low as about 6W when the patient's heart rate is stable.

[0032] Protective measures: In the balloon actuation device, the second normally closed gas solenoid valve 13 opens to connect to the external environment. A low-pressure gas sensor 12 detects the external air pressure and controls the single inflation volume of helium based on this detected pressure. This ensures that the balloon inflation pressure is a fixed value relative to the external air pressure, automatically adjusting to changes in the patient's environment. For example, when a patient travels from a low altitude to a high altitude by plane, the relative pressure of the gas output by the balloon actuation device remains unchanged, preventing leakage due to a decrease in external air pressure causing an increase in the relative pressure inside the balloon. Conversely, from a high altitude to a low altitude, it prevents the balloon from failing to fully inflate due to an increase in external air pressure causing a decrease in the relative pressure inside the balloon. During operation, the gas pressure sensor detects the pressure in the actuation gas path at a sampling rate of 250Hz, monitoring the pressure inside the balloon in real time and quickly identifying abnormalities in the gas tubing, such as ruptures, leaks, or detachments.

[0033] Example 2: Based on the above example, the second normally closed gas solenoid valve 13 is externally connected to a fourth low-pressure gas pipeline, and the second normally closed gas solenoid valve 13 is connected to the pneumatic silencer 14 through the fourth low-pressure gas pipeline.

[0034] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An intra-aortic balloon pump assisted eccentric wheel type gas path combined device comprising a housing, characterized in that, The interior of the shell is provided with a helium perfusion device, a balloon driving device and a main control circuit; The helium perfusion device is mainly composed of a helium storage cylinder (1), a high-pressure gas pipeline (2), a high-pressure gas pressure sensor (3), a gas pressure reducing valve (4), a first low-pressure gas pipeline (5), a first normally closed gas electromagnetic valve (6) and a second low-pressure gas pipeline (7), the helium storage cylinder (1) is connected with the high-pressure gas pressure sensor (3) and the gas pressure reducing valve (4) through the high-pressure gas pipeline (2), and the gas pressure reducing valve (4) is connected with the first normally closed gas electromagnetic valve (6) through the first low-pressure gas pipeline (5). The balloon driving device is mainly composed of a normally open gas electromagnetic valve (8), a third low-pressure gas pipeline (9), a blood detector (10), a balloon interface (11), a low-pressure gas pressure sensor (12), a second normally closed gas electromagnetic valve (13), a cylinder gas nozzle (15) and a cylinder (19), the first normally closed gas electromagnetic valve (6) is connected with the normally open gas electromagnetic valve (8), the low-pressure gas pressure sensor (12), the second normally closed gas electromagnetic valve (13) and the cylinder gas nozzle (15) through the second low-pressure gas pipeline (7), the normally open gas electromagnetic valve (8) is connected with the balloon interface (11) through the third low-pressure gas pipeline (9), and the third low-pressure gas pipeline (9) penetrates through the blood detector (10). The cylinder gas nozzle (15) is connected with the cylinder (19), the interior of the cylinder (19) is provided with a center positioning gear (17) and a rotor (16), and the two sides of the cylinder (19) are sealed by a cover plate (18).

2. The eccentric rotor gas circuit combination device for intra-aortic balloon counterpulsation assistance according to claim 1, characterized in that, The balloon interface (11) is connected with the gas inlet (outlet) pipe of an external balloon.

3. The eccentric rotor gas circuit combination device for intra-aortic balloon counterpulsation assistance according to claim 1, characterized in that, The second normally closed gas electromagnetic valve (13) is connected with a pneumatic muffler (14) through a fourth low-pressure gas pipeline.

4. The eccentric rotor gas circuit combination device for intra-aortic balloon counterpulsation assistance according to claim 1, characterized in that, The interior of the shell is provided with a stepper motor, an eccentric shaft motor shaft (1605) is arranged on the stepper motor, an eccentric shaft rotor shaft neck (1604) is installed at the end of the eccentric shaft motor shaft (1605), the end of the eccentric shaft rotor shaft neck (1604) is fixedly connected with the rotor (16), a top seal (1601) is installed at the end position of the rotor (16), a rotor inner gear (1603) is installed in the rotor (16), a sealing ring (1602) is arranged at the connection position of the rotor inner gear (1603) and the rotor (16), and the rotor inner gear (1603) is engaged with the center positioning gear (17).

5. The eccentric rotor gas circuit combination device for intra-aortic balloon counterpulsation assistance according to claim 1, characterized in that, The high-pressure gas pressure sensor (3), the first normally closed gas electromagnetic valve (6), the normally open gas electromagnetic valve (8), the low-pressure gas pressure sensor (12), the blood detector (10) and the second normally closed gas electromagnetic valve (13) are electrically connected with the main control circuit.

6. The eccentric rotor gas circuit combination device for intra-aortic balloon counterpulsation assistance according to claim 1, characterized in that, The blood detector (10) monitors whether blood appears in the pipeline in the form of a photoelectric sensor.

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