Portable external counterpulsation device

Abstract

The portable external counterpulsation device is small in size, convenient to carry and high in system stability, an inner cavity of a box body is divided into a lower cavity, a middle cavity and an upper cavity, a permanent magnet brushless motor air compressor and a switching power supply are arranged in the lower cavity, an air storage tank is arranged in the middle cavity, and the air storage tank is arranged in the upper cavity. And the electromagnetic valve assembly and the main control unit thereof are arranged in the upper chamber. The permanent magnet brushless motor air compressor with the heaviest mass is arranged at the lowermost position, the stability of the whole counterpulsation device is guaranteed, the switching power supply is also arranged at the lower part, a power line is prevented from being touched by mistake in the use process, and the safety is high; the electromagnetic valve assembly and the main control unit thereof are arranged at the upper part, so that an operator can operate conveniently; the air storage tank is arranged in the middle position and can be conveniently connected with the permanent magnet brushless motor air compressor and the electromagnetic valve assembly, arrangement of an air path system is facilitated, and the arrangement space can be further reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a portable external counterpulsation device. Background Art

[0002] EECP is a method of non-invasively pressing the lower body externally to relieve and eliminate angina symptoms and improve the hypoxic-ischemic state of important organs of the body. It is also a medical device used to prevent and treat cardiovascular and cerebrovascular diseases. Traditional EECP devices use air bags wrapped around the limbs and buttocks to inflate and pressurize the air bags during the diastole of the heart, prompting blood from the limb arteries and veins to return to the heart, significantly increasing diastolic pressure, improving blood perfusion of important organs such as the heart and brain, and reducing cardiac afterload; during the systole of the heart, the air bags are quickly deflated, the pressure is relieved, and the systolic pressure in the aorta is reduced, minimizing the resistance of the heart's ejection phase, and accelerating the blood flow to the distal end, thereby achieving the counterpulsation effect.

[0003] Traditional EVCP devices usually include a EVCP bed and a control host. The EVCP bed is internally integrated with components such as an air compressor, a frequency converter, an air tank, and a solenoid valve assembly. It weighs 400-500 kilograms and is not easy to move. It is only suitable for use in hospitals. When patients need to use EVCP devices for rehabilitation treatment, they need to go to the hospital every day, which is very inconvenient for them. Summary of the invention

[0004] The purpose of the present invention is to provide a portable external counterpulsation device which is small in size, easy to carry and has high system stability.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a portable external counterpulsation device, including a box body, the inner cavity of the box body is divided into a lower chamber, a middle chamber and an upper chamber, a permanent magnet brushless motor air compressor and a switching power supply are arranged in the lower chamber, an air storage tank is arranged in the middle chamber, and a solenoid valve assembly and its main control unit are arranged in the upper chamber.

[0006] Furthermore, an isolation box is provided in the lower chamber, and the isolation box includes a first chamber and a second chamber distributed laterally. The compressor of the permanent magnet brushless motor air compressor is placed and fixed in the first chamber, the motor driver of the permanent magnet brushless motor air compressor is fixed in the second chamber, and the switching power supply is also arranged in the second chamber.

[0007] Furthermore, the contour of the isolation box is consistent with the contour of the lower chamber, the isolation box is placed in the lower chamber and the peripheral wall of the isolation box is in close contact with the inner wall of the lower chamber, the inner wall of the first chamber is provided with sound insulation cotton, and sound insulation cotton is also filled between the peripheral wall of the isolation box and the inner wall of the lower chamber.

[0008] Furthermore, the main control unit includes a human-computer interaction screen embedded in the top inclined surface of the box, and a circuit board and a main control board arranged in the upper chamber. The middle chamber and the upper chamber are separated by a partition. The circuit board and the main control board are fixed on the partition, and the inclined surface is inclined with the back higher and the front lower.

[0009] Furthermore, a retaining ring is extended from the inner wall of the box to the inner cavity, and the retaining ring is against the top plate of the isolation box to form a limit fit. The gas tank is fixed to the top plate by a fixing part and a shock-absorbing spring is arranged between the two. A through hole is opened at the corresponding position of the top plate and the compressor, and the air outlet pipe of the compressor passes through the through hole and is connected with the gas tank through a pipeline.

[0010] Furthermore, a notch is provided on one side of the partition, and an interface assembly protrudes from the back plate of the box body to the notch. The interface assembly includes an airbag interface for connecting to the solenoid valve assembly and an electrocardiogram interface and a blood oxygen interface for connecting to the main control board.

[0011] Furthermore, storage boxes and handles are provided on both sides of the box body. The handles are arranged near the upper part, and feet are provided at the four corners of the bottom of the box body.

[0012] In the above scheme, the permanent magnet brushless motor air compressor, which is the heaviest, is arranged at the lowest position to ensure the stability of the entire counterpulsation device. The switching power supply is also arranged at the lower part to prevent accidental contact with the power cord during use, which has high safety. The solenoid valve assembly and its main control unit are arranged at the upper part to facilitate operation by the operator. The air storage tank is arranged in the middle position, which can be conveniently connected to the permanent magnet brushless motor air compressor and the solenoid valve assembly, facilitates the layout of the air path system, and can further reduce the layout space. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 3D ECT Figure 1 ; Figure 2 3D ECT Figure 2 ; Figure 3 for Figure 2 Schematic diagram of the internal structure after removing the back panel; Figure 4 for Figure 3 Schematic diagram of the structure after removing some components; Figure 5 for Figure 4 Schematic cross-section of . DETAILED DESCRIPTION

[0014] After the EVCP device is designed into a small portable structure, the internal space is greatly reduced, so how to arrange the components reasonably is a problem that needs to be considered. Figure 1-Figure 5The present invention is described in further detail.

[0015] A portable external counterpulsation device, combined with Figure 1-Figure 5 , including a box body 10, the inner cavity of the box body 10 is divided into a lower chamber A, a middle chamber B and an upper chamber C, a permanent magnet brushless motor air compressor 20 and a switch power supply 30 are arranged in the lower chamber A, a gas storage tank 40 is arranged in the middle chamber B, and a solenoid valve assembly 50 and its main control unit 60 are arranged in the upper chamber C. The external counterpulsation device in the present invention is a vertical structure, that is, the various components in the inner cavity of the box body 10 are arranged in the upper and lower positions. As the heaviest permanent magnet brushless motor air compressor 20 is arranged at the lowest position to ensure the stability of the entire counterpulsation device, and the switch power supply 30 is also arranged at the lower part to prevent accidental contact with the power cord during use, which is highly safe; the solenoid valve assembly 50 and its main control unit 60 are arranged at the upper part, which is convenient for operators to operate; and the gas storage tank 40 is arranged in the middle position, which can be conveniently connected with the permanent magnet brushless motor air compressor 20 and the solenoid valve assembly 50, which is convenient for the arrangement of the gas path system and can further reduce the arrangement space.

[0016] It should be noted that the permanent magnet brushless motor air compressor 20 is used here, and the DC brushless motor is used, the voltage is reduced to 48V, and no frequency converter is required, and the harmonic filter and isolation transformer are also omitted. On the one hand, the number of components and the layout space are reduced. On the other hand, the frequency converter is the main source of harmonic pollution of active equipment. Eliminating the frequency converter helps to improve the stability and control accuracy of the entire control system. The compressor can respond and control the motor speed and the pressure of the air tank more quickly through the driver.

[0017] Since the permanent magnet brushless motor air compressor 20 will vibrate and generate a lot of heat when working, an isolation box 11 is provided in the lower chamber A. The isolation box 11 includes a first chamber 111 and a second chamber 112 distributed laterally. The compressor 21 of the permanent magnet brushless motor air compressor 20 is placed in the first chamber 111 and fixed, the motor driver 22 of the permanent magnet brushless motor air compressor 20 is fixed in the second chamber 112, and the switch power supply 30 is also arranged in the second chamber 112. The isolation box 11 can fix the permanent magnet brushless motor air compressor 20 and the switch power supply 30 on the one hand, and the shape of the isolation box 11 itself can be designed to match the box body 10 to enhance the stability of the connection. At the same time, the isolation box 11 can also serve as an isolation piece between the lower chamber A and the middle chamber B, isolating the permanent magnet brushless motor air compressor 20 and the switch power supply 30 from the above components in space, preventing the heat generated by them from directly diffusing into the space above and affecting the normal operation of other components.

[0018] Preferably, the contour of the isolation box 11 is consistent with the contour of the lower chamber A, the isolation box 11 is inserted into the lower chamber A and the peripheral wall of the isolation box 11 is in close contact with the inner wall of the lower chamber A, the inner wall of the first chamber 111 is provided with soundproof cotton, and the space between the peripheral wall of the isolation box 11 and the inner wall of the lower chamber A is also filled with soundproof cotton. By setting the shape of the isolation box 11, the isolation box 11 is inserted into the box body 10, and the gap is filled with soundproof cotton, thereby ensuring the stability of the position of the isolation box 11 in the box body 10 and preventing it from moving during the whole process. Of course, bolts or welding can be added between the isolation box 11 and the box body 10. The soundproof cotton on the inner wall of the first chamber 111 and the soundproof cotton filled in the gap can effectively reduce noise and improve the comfort of the counterpulsation device.

[0019] Since the present invention is a portable extracorporeal counterpulsation device, a high degree of integration is required. The main control unit 60 includes a human-machine interaction screen 61 embedded on the top slope 12 of the box body 10, and a circuit board 62 and a main control board 63 arranged in the upper chamber C. The middle chamber B and the upper chamber C are separated by a partition 13, and the circuit board 62 and the main control board 63 are fixed on the partition 13. In other words, when the counterpulsation device is in use, it has its own active unit 60 and does not need to be connected to other additional control units. It can be used directly in any scene with electricity. The human-machine interaction screen 61 is set on the top slope 12, and the slope 12 is inclined with the back high and the front low, which is convenient for users to observe and operate.

[0020] In order to further limit the position of the isolation box 11, the inner wall of the box 10 extends to the inner cavity with a retaining ring 14, and the retaining ring 14 is blocked on the top plate 113 of the isolation box 11 to form a limited fit. The retaining ring 14 is arranged along the inner wall of the box 11, and the width is limited, and at least two sides are arranged. The advantage of such arrangement is that the retaining ring 14 does not occupy the vertical space, and the gas tank 40 is directly installed on the top plate 113, thereby further reducing the volume of the whole counterpulsation device. The gas tank 40 is fixed to the top plate 113 by a fixing member 41 and a shock-absorbing spring is arranged between the two. The gas tank 40 is a key component for storing compressed gas, and its stability and reliability have a key influence on the overall performance of the device. When the device is running, the gas tank 40 may vibrate due to internal air pressure changes or external interference. Therefore, a shock-absorbing spring is arranged at the bottom of the gas tank 40, which can effectively absorb and disperse vibration energy, reduce the transmission of vibration, reduce the generation of noise, and ensure that the device can run stably and quietly, thereby improving the treatment effect and the comfort of the patient. A through hole a is formed at a position corresponding to the top plate 113 and the compressor 21 , and an air outlet pipe 211 of the compressor 21 passes through the through hole a and communicates with the air storage tank 40 through a pipeline.

[0021] Furthermore, a notch 131 is provided on one side of the partition 13, and the interface assembly 70 protrudes from the back plate 15 of the box body 10 to the notch 131. The interface assembly 70 includes an air bag interface 71 for connecting to the electromagnetic valve assembly 50 and an ECG interface 72 and a blood oxygen interface 73 for connecting to the main control board 63. When in use, the connection tube of the bag sleeve is inserted into the air bag interface 71, the ECG lead wire interface is inserted into the ECG interface 72, and the blood oxygen connection line is inserted into the blood oxygen interface 73, and then the device is started to achieve the external counterpulsation rehabilitation treatment of the patient. The outer shell of the box body 10 is enclosed by a main body and a back plate 15. The main body includes 5 faces, and only the back is open to facilitate the assembly of the components in the inner cavity. After the assembly is completed, it is encapsulated by the back plate 15, so that the outer surface of the overall box body 10 looks like a whole, which is beautiful and generous. The top surface of the main body is an inclined surface, on which a human-machine interaction screen 61 is embedded, and the inclination direction is that the back is high and the front is low, which is convenient for operators and patients to operate and observe.

[0022] Storage boxes 16 and handles 17 are also provided on both sides of the box 10, and the handles 17 are arranged near the upper part. The storage box 16 is used to place accessories such as the cuff, ECG lead wire, and blood oxygen sensor, and the handles 17 are used for people to grasp and move the entire external counterpulsation device. The four corners of the bottom of the box 10 are also provided with feet 18, which can be made of rubber material to further achieve shock absorption and noise reduction effects.

[0023] The entire extracorporeal counterpulsation device is 55cm long, 34cm wide and 60cm high. It is small in size and occupies little space, making it suitable for use in hospitals and homes. It weighs only 25kg, so an adult can easily lift and transport it.

[0024] The above shows and describes the basic principles, main features and characteristics of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of the present invention to be protected is defined by the attached claims and their equivalents.

Claims

1. A portable external counterpulsation device, comprising a housing (10), characterized in that: The inner cavity of the box body (10) is divided into a lower chamber (A), a middle chamber (B) and an upper chamber (C); a permanent magnet brushless motor air compressor (20) and a switch power supply (30) are arranged in the lower chamber (A); an air storage tank (40) is arranged in the middle chamber (B); and a solenoid valve assembly (50) and a main control unit (60) thereof are arranged in the upper chamber (C).

2. A portable external counterpulsation device according to claim 1, characterized in that: An isolation box (11) is arranged in the lower chamber (A), and the isolation box (11) comprises a first chamber (111) and a second chamber (112) which are distributed laterally. The compressor (21) of the permanent magnet brushless motor air compressor (20) is placed and fixed in the first chamber (111), the motor driver (22) of the permanent magnet brushless motor air compressor (20) is fixed in the second chamber (112), and the switching power supply (30) is also arranged in the second chamber (112).

3. A portable external counterpulsation device according to claim 2, characterized in that: The contour of the isolation box (11) is consistent with the contour of the lower chamber (A), the isolation box (11) is inserted into the lower chamber (A) and the peripheral wall of the isolation box (11) is in close contact with the inner wall of the lower chamber (A), the inner wall of the first chamber (111) is provided with sound insulation cotton, and the space between the peripheral wall of the isolation box (11) and the inner wall of the lower chamber (A) is also filled with sound insulation cotton.

4. A portable external counterpulsation device according to claim 1, characterized in that: The main control unit (60) comprises a human-machine interaction screen (61) embedded in the top inclined surface (12) of the box body (10), and a circuit board (62) and a main control board (63) arranged in the upper chamber (C); the middle chamber (B) and the upper chamber (C) are separated by a partition (13); the circuit board (62) and the main control board (63) are fixed on the partition (13); and the inclined surface (12) is inclined with the back side higher and the front side lower.

5. A portable external counterpulsation device according to claim 2, characterized in that: A retaining ring (14) is provided on the inner wall of the box body (10) extending toward the inner cavity. The retaining ring (14) abuts against the upper surface of the top plate (113) of the isolation box (11) and forms a limit fit. The gas storage tank (40) is fixed to the top plate (113) via a fixing member (41) and a shock absorbing spring is provided between the two. A through hole (a) is provided at a position corresponding to the top plate (113) and the compressor (21). The gas outlet pipe (211) of the compressor (21) passes through the through hole (a) and is in communication with the gas storage tank (40) via a pipeline.

6. A portable external counterpulsation device according to claim 1, characterized in that: A notch (131) is formed on one side of the partition (13); an interface assembly (70) protrudes from the back plate (15) of the box body (10) to the notch (131); the interface assembly (70) comprises an air bag interface (71) for connecting to the solenoid valve assembly (50) and an electrocardiogram interface (72) and a blood oxygen interface (73) for connecting to the main control board (63).

7. A portable external counterpulsation device according to claim 1, characterized in that: Storage boxes (16) and handles (17) are also provided on both sides of the box body (10), and the handles (17) are arranged near the upper part. Bottom feet (18) are also provided at the four corners of the bottom of the box body (10).

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