A gas circuit system for an external counterpulsation device

Abstract

The utility model relates to the field of counterpulsation treatment equipment discloses an extracorporeal counterpulsation device gas path system, including gas supply unit and counterpulsation unit, gas supply unit includes first gas holder and second gas holder, first gas holder and second gas holder all store compressed air and the volume of second gas holder is less than first gas holder, and counterpulsation unit includes gasbag, and the second gas holder is arranged between first gas holder and gasbag and is communicated with first gas holder and gasbag respectively. By setting first gas holder and second gas holder all store compressed air and the volume of second gas holder is less than first gas holder, simultaneously, the second gas holder is arranged between first gas holder and gasbag and is communicated with first gas holder and gasbag respectively, and the second gas holder with smaller compressed air capacity is used to supply gas for the gasbag, and the first gas holder with larger capacity is used as the gas source of the second gas holder, and the gas pressure entering the second gas holder is adjusted through the pressure reducing valve, so that the gas pressure in the gasbag is stable.

Description

Technical Field

[0001] This solution relates to the field of counterpulsation therapy equipment, specifically to an external counterpulsation device airway system. Background Technology

[0002] External counterpulsation (ECP) is a non-invasive circulatory assist device consisting of a pneumatic system, an electronic control system, and a pneumatic bladder system. The pneumatic bladder, wrapped around the patient's lower limbs and buttocks, rapidly inflates during diastole, sequentially pressurizing the limbs to drive blood towards the aorta, increasing diastolic pressure and thus increasing coronary blood flow and improving myocardial blood supply. During systole, the pneumatic bladder deflates rapidly, reducing vascular resistance in the lower limbs, lessening the afterload on cardiac ejection, facilitating cardiac output, and reducing myocardial oxygen consumption. During use, the pneumatic system provides compressed air to power the inflation and deflation of the pneumatic bladder. It offers a safe and effective treatment option for many patients with cardiovascular diseases and other ischemic conditions, especially suitable for those who cannot tolerate or are unsuitable for surgery or interventional procedures.

[0003] Referring to the pediatric external counterpulsation device with publication number CN205758941U, existing air supply systems generally include an air pump and an air tank. During use, the air pump compresses air into the air tank to form compressed air. During diastole, an electronic control system controls the compressed air to enter the air bladder of the airbag system, pressurizing the user and directing blood flow towards the aorta, increasing the aortic diastolic pressure. During systole, the electronic control system controls the rapid deflation of the air bladder, thereby reducing lower limb vascular resistance, reducing the afterload of cardiac ejection, facilitating cardiac output, and reducing myocardial oxygen consumption. However, the air pump pumping air into the air tank causes significant pressure fluctuations when the pump starts and stops. When the pump starts, the air pressure rises rapidly; after the pump stops, the air pressure gradually decreases as the air bladder inflates, resulting in unstable air pressure entering the air bladder. This affects the consistency of air bladder inflation pressure during external counterpulsation therapy, potentially impacting treatment efficacy. Summary of the Invention

[0004] The present invention aims to provide an external counterpulsation device airway system to stabilize the output air pressure of the air supply system and reduce the impact of unstable air supply pressure on the treatment effect.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an external counterpulsation device air circuit system, including an air supply unit and a counterpulsation unit. The air supply unit includes a first air tank and a second air tank. Both the first air tank and the second air tank store compressed air, and the volume of the second air tank is smaller than that of the first air tank. The counterpulsation unit includes an air bag. The second air tank is disposed between the first air tank and the air bag and is connected to both the first air tank and the air bag.

[0006] The beneficial effects of this solution are as follows: by setting up a first air tank and a second air tank, both of which store compressed air, and the volume of the second air tank is smaller than that of the first air tank, the second air tank is positioned between the first air tank and the airbag and is connected to both the first air tank and the airbag respectively. The second air tank, with its smaller compressed air capacity, supplies air to the airbag, while the first air tank, with its larger capacity, serves as the air source for the second air tank. By adjusting the air pressure entering the second air tank from the first air tank, the supply air pressure to the airbag is stabilized.

[0007] Furthermore, the first gas storage tank is connected to a compressor.

[0008] Beneficial effects: By using a compressor, when the compressed air pressure in the first air tank is lower than the required pressure in the second air tank, the user can replenish the first air tank with air using the compressor, so that the compressed air pressure in the first air tank meets the usage requirements, without the need to replenish the compressed air through logistics or other means. This ensures that the air pressure in the second air tank remains stable during treatment, and at the same time, there is no need to add an extra reserve air source, reducing the cost of use.

[0009] Furthermore, the counterpulsation unit also includes a gas distribution assembly, which includes several first solenoid valves, which are disposed between the outlet of the second gas tank and the air bladder.

[0010] Furthermore, the gas distribution assembly also includes a gas distribution element, which includes a gas distribution body. The gas distribution body is provided with a first gas port, a second gas port and a third gas port. The first gas port is connected to a second gas storage tank. The second gas port is provided with an exhaust port that is connected to the atmosphere. The third gas port is connected to an air bag. A second solenoid valve is provided inside the gas distribution body and can control the connection status of the first gas port, the second gas port and the third gas port through the second solenoid valve.

[0011] Furthermore, the counterpulsation unit also includes a connecting assembly, which includes a connecting hose and a connecting plate. The connecting plate is provided with several air distribution ports, each with an internal thread that can communicate with a third air port. The airbag is provided with an inlet and outlet air port, and the connecting hose is located between the air distribution ports and the inlet and outlet air port and can connect the air distribution ports to the inlet and outlet air port.

[0012] Furthermore, the connection assembly also includes a quick-release structure, which includes a female connector and a male connector. The female connector is fixed to both ends of the connecting hose, and the male connector is fixed to the air distribution port and the air inlet / outlet.

[0013] Furthermore, the female connector includes a female connector body, the female connector body includes a connecting section, the connecting hose includes a connecting end, the connecting end is fixed to both ends of the connecting hose and can be detachably connected to the connecting section.

[0014] Furthermore, the female connector body also includes a quick-release section, with a quick-release ring on its outer sleeve. A spring is installed between the quick-release ring and the female connector body, with one end of the spring engaging with the female connector body and the other end engaging with the quick-release ring. A locking pin is installed inside the quick-release section, sliding on the inner wall of the female connector body and able to slide inwards under the push of the inner wall of the quick-release ring. The male connector includes a locking section with a locking groove that matches the locking pin. The quick-release ring simplifies the installation and disassembly of the connecting hose and the connecting plate, making the airbag assembly process more streamlined. Attached Figure Description

[0015] Figure 1 A three-dimensional view of an embodiment of the present utility model;

[0016] Figure 2 This is a three-dimensional view of another embodiment of the present invention;

[0017] Figure 3 This is a three-dimensional view of the counterpulsation unit according to an embodiment of the present invention;

[0018] Figure 4 This is an assembly diagram of the connecting component of this utility model;

[0019] Figure 5 This is a schematic diagram of the split structure of the quick-release structure in an embodiment of the present invention.

[0020] The reference numerals in the accompanying drawings include: compressor 1, compressor inlet pipe 11, compressor outlet pipe 12, first air tank 21, second air tank 22, air supply pipe 23, first solenoid valve 231, air distribution component 31, exhaust port 311, air distribution pipe 312, air bag 32, connecting hose 41, connecting end 411, connecting female head 42, airtight ring 421, locking pin 422, quick release ring 423, connecting male head 43, slot 431, connecting plate 44. Detailed Implementation

[0021] Example 1

[0022] Example 1 is basically as shown in the appendix. Figure 1-3 As shown, Figure 1-3 The illustrated external counterpulsation device's airway system includes an air supply unit and a counterpulsation unit, such as... Figure 1 , Figure 2 As shown, the air supply unit includes a first air tank 21 and a second air tank 22. Both the first air tank 21 and the second air tank store compressed air, and the volume of the second air tank 22 is smaller than that of the first air tank 21. An air supply pipe 23 is provided between the first air tank 21 and the second air tank 22, and both ends of the air supply pipe 23 are connected to the first air tank 21 and the second air tank 22, respectively. Figure 3As shown, a first solenoid valve 231 is provided at one end of the gas supply pipe 23 near the first gas storage tank 21. When the first solenoid valve 231 is opened, the first gas storage tank 21 is connected to the second gas storage tank 22.

[0023] The counterpulsation unit includes a gas distribution assembly, which includes a gas distribution component 31. The gas distribution component 31 includes a gas distribution body, which is provided with a first air port, a second air port, and a third air port. The first air port is connected to a gas distribution pipe 312 and is connected to a second air storage tank 22 through the gas distribution pipe 312. The second air port is provided with an exhaust port 311. The third air port is connected to an air bladder 32. A second solenoid valve is provided in the gas distribution body. When inflating, the movement of the second solenoid valve connects the first air port and the third air port, while closing the second air port, so that the compressed air stored in the second air storage tank 22 can be introduced into the air bladder 32. When venting, the second solenoid valve rotates, connecting the third air port and the second air port, while closing the first air port, so that the compressed air in the air bladder 32 can be discharged through the exhaust port 311.

[0024] Example 2

[0025] Example 2 is basically the same as Example 1, except that the air supply unit also includes a compressor 1. The compressor 1 includes a compression inlet pipe 11 and a compression outlet pipe 12. The compression outlet pipe 12 is connected to the first air storage tank 21. When in use, the gas enters the compressor 1 through the compression inlet pipe 11 and is compressed. Then, it enters the first air storage tank 21 through the compression outlet pipe 12, so that the compressed air in the first air storage tank 21 is maintained at a certain pressure.

[0026] Example 3

[0027] Example 3 is basically the same as Example 1, except that the counterpulsation unit also includes a connecting component, such as... Figure 3 , Figure 4 As shown, the connecting assembly includes a connecting hose 41, a connecting plate 44, and a quick-release structure. The connecting hose 41 has connecting ends 411 fixed at both ends, and the inner wall of each connecting end 411 is provided with internal threads. The connecting plate 44 has several air distribution ports, each with internal threads and capable of communicating with a third air port. The airbag 32 has air inlets and outlets, and threaded connectors are bonded to the inside of each air inlet and outlet.

[0028] The quick-release structure includes a female connector 42 and a male connector 43, such as Figure 5As shown, the female connector 42 includes a female connector body. The upper part of the female connector body is a connecting section, which is provided with an external thread adapted to the connecting end 411, thereby connecting the connecting section and the connecting end 411 by thread. The lower part of the female connector body is a quick-release section, which is covered with a quick-release ring 423. A spring is provided between the quick-release ring 423 and the female connector body. One end of the spring is engaged with the female connector body, and the other end is engaged with the quick-release ring 423. An airtight ring 421 is provided inside the quick-release section. The locking pin 422, specifically, the airtight ring 421 is a rubber ring bonded to the inner wall of the quick-release section. The locking pin 422 is slidably disposed on the inner wall of the female head body and can slide into the interior of the female head body under the push of the inner wall of the quick-release ring 423. The connecting male head 43 includes a connecting section and a locking section. The connecting section is provided with external threads and can be threadedly connected to the air distribution port or the air inlet / outlet port of the airbag 32 through the external threads. The locking section is provided with a locking groove 431, which is adapted to the locking pin 422.

[0029] During installation, firstly, fix the female connector 42 to both ends of the connecting hose 41; then, engage the female connector 42 with the male connector 43, connecting the airbag 32 to the air distribution port. Specifically, slide the quick-release ring 423 towards the connecting section, releasing the restriction of the inner wall of the quick-release ring 423 on the outer side of the locking pin 422, allowing the locking pin 422 to slide away from the female connector body. Next, insert the engaging section of the male connector 43 into the female connector 42 and release the restriction on the quick-release ring 423. Use the outer wall of the engaging section to push the locking pin 422, causing the locking pin 422 to move away from the axis of the female connector body until it reaches the height of the slot 431, with the free end of the engaging section higher than the height of the airtight ring 421. At this point, the quick-release ring 423 moves towards the male connector 43 under the action of the spring, and pushes the locking pin 422 towards the axis of the female connector body through its inner wall, completing the engagement of the female connector 42 and the male connector 43.

[0030] During disassembly, slide the quick-release ring 423 toward the connecting section to release the restriction of the inner wall of the quick-release ring 423 on the outer side of the locking pin 422, so that the locking pin 422 can slide away from the female head body, thereby pulling out the connecting female head 42.

[0031] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that the technical means used to solve problems in the above embodiments of this utility model can be combined to solve multiple technical problems simultaneously. For those skilled in the art, several modifications and improvements can be made without departing from the technical solution of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. An external counterpulsation device airway system, characterized in that: It includes an air supply unit and an anti-pulse unit. The air supply unit includes a first air tank and a second air tank. Both the first air tank and the second air tank store compressed air, and the volume of the second air tank is smaller than that of the first air tank. The anti-pulse unit includes an air bag. The second air tank is located between the first air tank and the air bag and is connected to both the first air tank and the air bag.

2. The airway system of an external counterpulsation device according to claim 1, characterized in that: The first gas storage tank is connected to a compressor.

3. The airway system of an external counterpulsation device according to claim 2, characterized in that: The counterpulsation unit also includes a gas distribution assembly, which includes several first solenoid valves, which are located between the outlet of the second gas tank and the air bladder.

4. The airway system of an external counterpulsation device according to claim 3, characterized in that: The gas distribution assembly also includes a gas distribution element, which includes a gas distribution body. The gas distribution body is provided with a first gas port, a second gas port and a third gas port. The first gas port is connected to a second gas storage tank. The second gas port is provided with an exhaust port that is connected to the atmosphere. The third gas port is connected to an air bag. The gas distribution body is provided with a second solenoid valve and can control the connection status of the first gas port, the second gas port and the third gas port through the second solenoid valve.

5. The airway system of an external counterpulsation device according to claim 4, characterized in that: The counterpulsation unit also includes a connecting assembly, which includes a connecting hose and a connecting plate. The connecting plate is provided with several air distribution ports, each with an internal thread that can communicate with a third air port. The airbag is provided with an inlet and outlet air port. The connecting hose is located between the air distribution ports and the inlet and outlet air port and can communicate with the air distribution ports.

6. The airway system of an external counterpulsation device according to claim 5, characterized in that: The connection assembly also includes a quick-release structure, which includes a female connector and a male connector. The female connector is fixed to both ends of the connecting hose, and the male connector is fixed to the air distribution port and the air inlet / outlet.

7. The airway system of an external counterpulsation device according to claim 6, characterized in that: The female connector includes a female connector body, the female connector body includes a connecting section, and the connecting hose includes a connecting end. The connecting end is fixed to both ends of the connecting hose and can be detachably connected to the connecting section.

8. The airway system of an external counterpulsation device according to claim 7, characterized in that: The female connector body also includes a quick-release section, which is covered by a quick-release ring. A spring is provided between the quick-release ring and the female connector body. One end of the spring is engaged with the female connector body, and the other end is engaged with the quick-release ring. A locking pin is provided inside the quick-release section. The locking pin is slidably disposed on the inner wall of the female connector body and can slide into the interior of the female connector body under the push of the inner wall of the quick-release ring. The male connector includes a locking section, which is provided with a locking groove that is adapted to the locking pin.

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