Pressure monitoring system for external counterpulsation device

Abstract

The pressure detection system for the external counterpulsation device can measure the actual pressure value of an air bag and comprises an air storage tank and an air compressor, the air storage tank is communicated with the air bag through an inflation and deflation pipeline, and pressurization and deflation are conducted between the air storage tank and the inflation and deflation pipeline through an inflation and deflation valve. The pressure monitoring unit monitors the pressure in the air bag in real time and transmits a signal to the control unit, the control unit controls the inflating and deflating valve to pressurize and deflate the air bag, the pressure monitoring unit comprises a pressure collecting pipe, the near end of the pressure collecting pipe is communicated with an inner cavity of the air bag, and the far end of the pressure collecting pipe is communicated with an external pressure sensor. The pressure in the air bag is directly collected through the pressure collecting pipe, namely, the current treatment state can be known more accurately by directly monitoring the pressure of the air bag, and a better treatment scheme is provided for a patient; meanwhile, the pressure sensor is arranged outside and is not affected by factors such as the temperature in the air bag, the impact force of airflow and vibration, and the precision of the pressure sensor is high.

Description

Technical Field

[0001] The utility model relates to the technical field of external counterpulsation equipment, and particularly relates to a pressure detection system for an external counterpulsation device. Background Art

[0002] External counterpulsation is a method of non-invasively pressing the lower body outside the body to relieve and eliminate angina symptoms, improve the anoxic and ischemic state of important organs of the body, and is also a medical device for preventing and treating cardiovascular and cerebrovascular diseases. The traditional external counterpulsation device inflates and pressurizes the airbag wrapped around the limbs and buttocks during diastole of the heart, prompting the blood in the limb arteries and veins to return to the heart, significantly increasing the diastolic blood pressure, improving blood perfusion in important organs such as the heart and brain, and reducing the afterload of the heart; during systole of the heart, the airbag quickly exhausts air and the pressure is released, prompting the systolic blood pressure in the aorta to drop, minimizing the resistance during the ejection period of the heart, and accelerating the blood flow to the distal end, thereby achieving the counterpulsation effect.

[0003] When the airbag type external counterpulsation device is working, compressed gas is provided by an air compressor and stored in a gas storage tank, and the airbag is pressurized and exhausted through an airbag charging and discharging valve block. The pressure inside the airbag is the key for the patient to receive effective treatment. The traditional airbag type external counterpulsation device monitors the pressure change in the gas storage tank and then calculates the pressure change situation inside the airbag through an algorithm. The treatment pressure obtained by this method is not the actual value of the pressure inside the airbag, but an empirical value. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a pressure detection system for an external counterpulsation device that can measure the actual pressure value of the airbag.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is: a pressure monitoring system for an external counterpulsation device, including a gas storage tank and an air compressor. The gas storage tank is communicated with the airbag through a charging and discharging pipeline. Pressurization and exhaust are carried out through a charging and discharging valve between the gas storage tank and the charging and discharging pipeline. The pressure monitoring unit monitors the pressure inside the airbag in real time and transmits the signal to the control unit, and the control unit controls the charging and discharging valve to pressurize and exhaust the airbag. The pressure monitoring unit includes a pressure collection pipe. The proximal end of the pressure collection pipe is communicated with the inner cavity of the airbag, and the distal end is communicated with an external pressure sensor.

[0006] The pressure collection pipe is arranged in the inner cavity of the charging and discharging pipeline. The distal end of the pressure collection pipe protrudes from the distal port of the charging and discharging pipeline and extends into the airbag, and the proximal end protrudes outside the proximal port of the charging and discharging pipeline.

[0007] The charging and discharging valve is fixed on the gas storage tank. The proximal end of the charging and discharging pipeline is directly communicated with the charging and discharging valve. The proximal end of the pressure collection pipe passes through the valve body of the charging and discharging valve and extends outside the valve body, and the pressure collection pipe is hermetically matched with the valve body.

[0008] The pressure acquisition pipe and the charging / discharging air pipe are coaxially arranged.

[0009] The pressure acquisition pipe and the charging / discharging air pipe are fixed by buckles, and an air flow passage is left in the cross section of the buckle.

[0010] A plurality of buckles are arranged at intervals along the length direction of the charging / discharging air pipe.

[0011] At least one buckle is arranged at each of the two ends of the charging / discharging air pipe.

[0012] In the above solution, the pressure in the airbag is directly acquired by the pressure acquisition pipe, that is, the pressure of the airbag is directly monitored, so that the current treatment state can be understood more accurately, and a better treatment plan can be provided for the patient; at the same time, the pressure sensor is arranged outside and is not affected by factors such as the temperature inside the airbag, the impact of air flow, and vibration, and the accuracy of the pressure sensor is relatively high. Description of the Drawings

[0013] Figure 1 It is a schematic diagram of the overall structure of the pressure detection system of the external counterpulsation device;

[0014] Figure 2 It is a cross-sectional view of the charging / discharging air pipe and the pressure acquisition pipe. Detailed Embodiment

[0015] For the convenience of understanding, the orientation is defined first. The side close to the airbag 40 is defined as "proximal" and "near side", and the side close to the air storage tank 20 is defined as "distal" and "far side". The following combines Figure 1 and Figure 2 to further elaborate on the present invention in detail.

[0016] Refer to Figure 1, An extracorporeal counterpulsation device pressure monitoring system, including an air storage tank 10 and an air compressor 20. The air storage tank 10 is communicated with an airbag 40 through a charging and discharging pipeline 30. Between the air storage tank 10 and the charging and discharging pipeline 30, a charging and discharging valve 50 is used for pressurization and exhaust. A pressure monitoring unit 60 monitors the pressure inside the airbag 40 in real time and transmits the signal to a control unit, and the control unit controls the charging and discharging valve 50 to pressurize and exhaust the airbag 40. The pressure monitoring unit 60 includes a pressure acquisition pipe 61. The proximal end of the pressure acquisition pipe 61 is communicated with the inner cavity of the airbag 40, and the distal end is communicated with an external pressure sensor 62. During the treatment of a patient, compressed gas is provided by the air compressor 20 and stored in the air storage tank 10. The airbag 40 is pressurized and exhausted through the charging and discharging valve 50. By filling the airbag 40 with compressed gas to squeeze the patient's limbs, the counterpulsation effect is achieved. Among them, the pressure inside the airbag 40 is the key for the patient to receive effective treatment. In this application, the pressure inside the airbag 40 is directly acquired by using the pressure acquisition pipe 61, that is, directly monitoring the pressure of the airbag 40 can more accurately understand the current treatment state and provide a better treatment plan for the patient; at the same time, the pressure sensor 62 is arranged outside and is not affected by factors such as the temperature, air flow impact, and vibration inside the airbag 40, and the accuracy of the pressure sensor 62 is relatively high.

[0017] As a preferred embodiment of the present utility model, the pressure acquisition pipe 61 is arranged in the inner cavity of the charging and discharging pipeline 30. The distal end of the pressure acquisition pipe 61 protrudes from the distal end port of the charging and discharging pipeline 30 and extends into the airbag 40, and the proximal end protrudes outside the proximal end port of the charging and discharging pipeline 30. The above arrangement method does not require re-designing the original airbag 40, and only needs to install a pressure acquisition pipe 61 inserted into the airbag 40 in the original charging and discharging pipeline 30.

[0018] Further, the charging and discharging valve 50 is fixed on the air storage tank 10. The proximal end of the charging and discharging pipeline 30 is directly communicated with the charging and discharging valve 50. The proximal end of the pressure acquisition pipe 61 passes through the valve body of the charging and discharging valve 50 and extends outside the valve body. The pressure acquisition pipe 61 is in sealed cooperation with the valve body. An embodiment of the sealing structure is realized by installing sealing pipe joints on both the inner and outer sides of the valve body. Other methods that can achieve the sealing of the pressure acquisition pipe 61 and the valve body are also acceptable. In this way, it is not necessary to re-design the circuit of the original pressure sensor either.

[0019] Preferably, the pressure acquisition pipe 61 and the charging and discharging pipeline 30 are coaxially arranged, which has no influence on the charging and discharging of compressed gas.

[0020] In order to achieve coaxial arrangement, the pressure acquisition pipe 61 and the charging and discharging pipeline 30 are fixed by a buckle. The cross-section of the buckle has an air flow passage to avoid affecting the flow of compressed gas.

[0021] Further, a plurality of buckles are arranged at intervals along the length direction of the charging and exhaust pipeline 30.

[0022] Furthermore, at least one buckle is arranged at each of the two ends of the charging and exhaust pipeline 30, which ensures the stable position of the pressure acquisition pipe 61 and prevents it from shaking greatly under the impact of air flow, thereby improving the accuracy of pressure acquisition.

[0023] The embodiments described above are only a part of the embodiments of the present application, rather than all of the embodiments. The accompanying drawings show the preferred embodiments of the present application, but do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosed content of the present application more thorough and comprehensive. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments or perform equivalent replacements for some of the technical features. Any equivalent structure directly or indirectly using the content of the specification and drawings of the present application in other related technical fields shall be within the scope of the patent protection of the present application by the same token.

Claims

1. A pressure monitoring system for an external counterpulsation device, comprising a gas storage tank (10) and an air compressor (20), wherein the gas storage tank (10) is connected to an air bag (40) via an air filling and exhaust pipe (30), the gas storage tank (10) and the air filling and exhaust pipe (30) are pressurized and exhausted via an air filling and exhaust valve (50), a pressure monitoring unit (60) monitors the pressure in the air bag (40) in real time and transmits a signal to a control unit, and the control unit controls the air filling and exhaust valve (50) to pressurize and exhaust the air bag (40), characterized in that: The pressure monitoring unit (60) comprises a pressure collection tube (61), the proximal end of the pressure collection tube (61) being in communication with the inner cavity of the airbag (40), and the distal end of the pressure collection tube (61) being in communication with an external pressure sensor (62).

2. The pressure monitoring system for an external counterpulsation device according to claim 1, characterized in that: The pressure collection tube (61) is arranged in the inner cavity of the inflation and exhaust pipe (30), the distal end of the pressure collection tube (61) protrudes from the distal end port of the inflation and exhaust pipe (30) and extends to the inside of the airbag (40), and the proximal end protrudes from the outside of the proximal end port of the inflation and exhaust pipe (30).

3. The pressure monitoring system for an external counterpulsation device according to claim 2, characterized in that: The charging and exhaust valve (50) is fixed on the gas storage tank (10), the proximal end of the charging and exhaust pipe (30) is directly connected to the charging and exhaust valve (50), the proximal end of the pressure collection pipe (61) passes through the valve body of the charging and exhaust valve (50) and extends to the outside of the valve body, and the pressure collection pipe (61) is in sealing cooperation with the valve body.

4. The pressure monitoring system for an external counterpulsation device according to claim 1, characterized in that: The pressure collection pipe (61) and the charging and discharging pipe (30) are coaxially arranged.

5. The pressure monitoring system for an external counterpulsation device according to claim 1 or 4, characterized in that: The pressure collection tube (61) and the inflation and exhaust pipe (30) are fixed by means of a buckle, and an air flow passage is left in the cross section of the buckle.

6. The pressure monitoring system for an external counterpulsation device according to claim 5, characterized in that: A plurality of buckles are arranged at intervals along the length direction of the inflation and exhaust pipe (30).

7. The pressure monitoring system for an external counterpulsation device according to claim 6, characterized in that: At least one buckle is provided at each end of the inflation and exhaust pipe (30).

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