Sphygmomanometer air bag device

Abstract

The utility model provides an air bag device of a sphygmomanometer, which belongs to the technical field of medical instruments and comprises an air bag main body, an inflation interface, a deflation interface and a connecting pipeline, the air bag main body is of an annular structure, and a reinforcing rib structure is arranged in the air bag main body. The inflation interfaces and the deflation interfaces are respectively arranged on the side wall of the air bag main body, the inflation interfaces and the air bag main body are integrally formed, the deflation interfaces and the air bag main body are integrally formed, the number of the inflation interfaces, the number of the deflation interfaces and the number of the connecting pipelines are multiple, each inflation interface and each deflation interface are connected with the connecting pipelines, and the connecting pipelines are connected with the inflation interfaces and the deflation interfaces. The other end of the connecting pipeline is connected with the sphygmomanometer; an inflation mechanism and an exhaust mechanism are arranged in the sphygmomanometer, the number of the inflation connectors and the number of the deflation connectors are even, the number of the inflation connectors is equal to the number of the deflation connectors, and the problem that pressure is unbalanced due to the fact that air distribution of an air bag device of a traditional sphygmomanometer is uneven is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment, and in particular relates to a sphygmomanometer airbag device. Background Art

[0002] As an important medical device widely used in health care, home care and clinical diagnosis, one of the core components of the sphygmomanometer is the sphygmomanometer airbag device. The device is mainly composed of the airbag body, inflation interface, deflation interface, inflation pipeline, deflation pipeline, pressure sensor and control system. The airbag body is usually made of elastic material and can be tightly wrapped around the upper arm of the subject. It is connected to the inflation system through the inflation interface, applies pressure to stop blood flow, and then slowly deflates through the deflation interface. The pressure sensor monitors and records blood pressure data in real time during this process.

[0003] Traditional sphygmomanometer airbag devices generally use single or symmetrically distributed inflation and deflation interfaces. They follow the principle of linear, equidistant or centrally symmetrical layout. Traditional sphygmomanometer airbag devices have the following disadvantages:

[0004] Uneven gas distribution leads to pressure imbalance: Since the inflation interface and deflation interface of traditional airbag devices usually adopt a linear or simple symmetrical layout, the gas is prone to uneven distribution inside the airbag during the process of entering and discharging the airbag, especially in large-area and complex-shaped airbags, where local pressure may be too high or too low. This pressure unevenness can cause the measurement results to be affected by deviations, especially when the arm shape of the subject is irregular or the muscle thickness is uneven. Eddy current and dead zone effect reduce measurement accuracy: The inflation and deflation interfaces with linear or equidistant layouts are prone to induce eddy currents in the gas flow inside the airbag, that is, the gas forms a rotating flow in a local area instead of spreading or concentrating smoothly and orderly. Eddy currents not only consume extra energy and increase the pressure fluctuation inside the airbag, but also may cause distortion of the signal received by the pressure sensor, reducing the accuracy of blood pressure measurement. In addition, eddy currents may also cause "dead zones" of gas flow to form in certain areas of the airbag, that is, the gas flow is extremely weak or even stagnant, and the pressure readings in these areas cannot truly reflect the blood vessel pressure, further affecting the blood pressure measurement results. Utility Model Content

[0005] In view of this, the utility model provides a sphygmomanometer airbag device, which solves the problem of pressure imbalance caused by uneven gas distribution in traditional sphygmomanometer airbag devices and improves gas distribution uniformity and pressure balance.

[0006] The utility model is achieved in this way:

[0007] The utility model provides a sphygmomanometer airbag device, which includes an airbag body, an inflation interface, a deflation interface, and a connecting pipeline. The airbag body is annular in structure, a reinforcing rib structure is arranged inside the airbag body, the inflation interface and the deflation interface are respectively arranged on the side wall of the airbag body, the inflation interface is integrally formed with the airbag body, the deflation interface is integrally formed with the airbag body, there are multiple inflation interfaces, deflation interfaces, and connecting pipelines, each of the inflation interfaces and the deflation interfaces is connected to a connecting pipeline, and the other end of the connecting pipeline is connected to the sphygmomanometer;

[0008] Wherein, an inflation mechanism and an exhaust mechanism are arranged inside the sphygmomanometer.

[0009] Each inflation interface and deflation interface is equipped with an independent control valve (such as a solenoid valve, electric valve or pneumatic valve) to control the opening, closing and gas flow of each interface separately. This design allows the inflation and deflation rate of each interface to be adjusted as needed to adapt to the physiological characteristics and measurement conditions of different patients.

[0010] On the basis of the above technical solution, the sphygmomanometer airbag device of the utility model can also be improved as follows:

[0011] Among them, the number of the inflation interfaces and the deflation interfaces is an even number, and the number of the inflation interfaces is equal to the number of the deflation interfaces.

[0012] The positions of the gas charging and discharging interfaces are determined according to fluid mechanics simulation calculations, so that the pressure distribution at each interface tends to be uniform, reducing the single-point pressure concentration. On the basis of maintaining central symmetry, the distances between the gas charging and discharging interfaces can be equidistant, that is, the distances between adjacent interfaces are equal, ensuring that the gas flow resistance at each interface is similar, which is conducive to pressure balance.

[0013] Furthermore, along the central axis of the airbag body as a reference, the inflation interface and the deflation interface are respectively arranged on the airbag body in a mirror-symmetrical manner, the inflation interface and the deflation interface are arranged according to the undulation law of a sinusoidal waveform, and the inflation interface and the deflation interface are respectively alternately arranged along the circumferential direction of the airbag body.

[0014] The beneficial effects of adopting the above-mentioned improvement scheme are: optimizing gas flow: setting the inflation interface and the deflation interface in a sinusoidal wave distribution manner, effectively guiding the gas to flow along a sinusoidal waveform path inside the airbag, reducing local eddies and dead zones, and improving the uniformity of gas distribution.

[0015] Enhanced pressure balance: The sinusoidal wave distribution mode ensures a more balanced pressure distribution during inflation and deflation, and reduces the pressure difference between the two side interfaces, thereby improving the overall pressure balance performance of the airbag and improving the accuracy and stability of blood pressure measurement.

[0016] Strong adaptability: The amplitude and phase angle of the sine wave can be flexibly adjusted according to the size, shape and required pressure control accuracy of the airbag body to adapt to different application requirements and individual differences.

[0017] Furthermore, the reinforcing ribs are distributed in a grid pattern inside the airbag body.

[0018] Furthermore, the inflation interface and the deflation interface are provided with threaded joints, and corresponding ends of the connecting pipeline are provided with connecting structures, and the connecting structures match the threaded joints.

[0019] Furthermore, the number of the connecting pipelines is equal to the sum of the number of the inflation interfaces and the number of the deflation interfaces.

[0020] Furthermore, the thickness of the airbag body decreases gradually from inside to outside in the radial direction, forming a trapezoidal structure.

[0021] Furthermore, the upper limit inflation pressure of the airbag body is 1.5 times the highest diastolic blood pressure value of the human body.

[0022] "The highest diastolic blood pressure value of the human body" refers to the highest diastolic blood pressure value that a human individual can reach as determined by known or recognized medical research. Diastolic blood pressure refers to the lowest blood pressure in the arteries during the diastolic period between two heartbeats. Under normal circumstances, the normal range of diastolic blood pressure for healthy adults is between 60 and 84 mmHg, and the ideal value is 60 to 80 mmHg.

[0023] Furthermore, one end of the connecting pipeline is connected to the inflation interface, and the other end is connected to the inflation mechanism inside the sphygmomanometer, and the inflation mechanism includes a manual air pump or an electric micro air pump.

[0024] Furthermore, one end of the connecting pipeline is connected to the deflation interface, and the other end is connected to the exhaust mechanism inside the sphygmomanometer, and the exhaust mechanism includes an exhaust valve or a manual valve.

[0025] Electronically controlled exhaust valve or manual valve: used to accurately control the exhaust rate of gas in the balloon to achieve a gradual drop in pressure for easy blood pressure measurement.

[0026] Compared with the prior art, the beneficial effects of the sphygmomanometer airbag device provided by the utility model are:

[0027] 1. Improve gas distribution uniformity and pressure balance:

[0028] The sine wave distribution mode is adopted, and the inflation interface and the deflation interface are arranged along the circumference of the airbag body according to the sine wave fluctuation law. This design allows the gas to flow along the pre-planned wave path when entering and leaving the airbag, avoiding the phenomenon of local excessive pressure or too low pressure that may occur in the linear layout. The sine wave distribution ensures that the gas enters and exits the airbag alternately along different radial directions, effectively reducing the pressure gradient and enhancing the pressure balance on both sides of the airbag, thereby significantly improving the accuracy and stability of blood pressure measurement;

[0029] 2. Reduce eddy current and dead zone effects:

[0030] The sinusoidal distribution of the gas filling and discharging interface can guide the gas to form an orderly and smooth flow pattern in the airbag, avoiding the generation of eddy currents. Since the gas continuously enters and exits along the sinusoidal waveform path, the pressure distribution inside the airbag is more uniform, effectively eliminating the gas flow dead zone that may appear in the traditional layout. This optimized gas flow characteristic reduces the pressure fluctuation inside the airbag, improves the signal quality received by the pressure sensor, and further improves the accuracy of blood pressure measurement;

[0031] 3. Enhance dynamic pressure control capability:

[0032] The airbag device of the utility model realizes refined dynamic regulation of the internal pressure of the airbag through the sinusoidal distribution of the inflation and deflation interface, combined with an advanced control system. During the inflation stage, the opening and closing sequence and time interval of each interface can be accurately adjusted according to the preset sinusoidal waveform, so that the internal pressure of the airbag rises more slowly and evenly, better adapts to individual differences, and accurately captures the peak blood pressure. Similarly, during the deflation stage, the control system can synchronously adjust the deflation rate of each deflation interface according to the sinusoidal wave distribution pattern, so that it is more consistent with the individual blood pressure drop curve, ensuring accurate measurement of diastolic pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments of the utility model will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0034] Figure 1 This is an example diagram of a blood pressure monitor airbag device;

[0035] Figure 2 A perspective view of a blood pressure meter air bag device connecting pipeline;

[0036] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0037] 10. Airbag body; 20. Inflation interface; 30. Deflation interface; 40. Connecting pipeline. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the implementation mode of the present invention clearer, the technical solution in the implementation mode of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the implementation mode of the present invention.

[0039] like Figure 1 , Figure 2 As shown, it is a first embodiment of a sphygmomanometer airbag device provided by the utility model. In this embodiment, it includes an airbag body 10, an inflation interface 20, a deflation interface 30, and a connecting pipeline 40. The airbag body 10 is annular in structure, and a reinforcing rib structure is arranged inside the airbag body 10. The inflation interface 20 and the deflation interface 30 are respectively arranged on the side wall of the airbag body 10. The inflation interface 20 is integrally formed with the airbag body 10, and the deflation interface 30 is integrally formed with the airbag body 10. There are multiple inflation interfaces 20, deflation interfaces 30, and connecting pipelines 40. Each inflation interface 20 and deflation interface 30 is connected to a connecting pipeline 40, and the other end of the connecting pipeline 40 is connected to the sphygmomanometer;

[0040] Among them, the sphygmomanometer is provided with an inflation mechanism and an exhaust mechanism inside.

[0041] Among them, in the above technical solution, the number of the inflation interface 20 and the deflation interface 30 is an even number, and the number of the inflation interface 20 is equal to the number of the deflation interface 30.

[0042] Furthermore, in the above technical solution,

[0043] Taking the central axis of the airbag body 10 as a reference, the inflation interface 20 and the deflation interface 30 are arranged on the airbag body 10 in a mirror-symmetrical manner, and the inflation interface 20 and the deflation interface 30 are arranged according to the undulation law of a sinusoidal waveform. The inflation interface 20 and the deflation interface 30 are alternately arranged along the circumferential direction of the airbag body 10.

[0044] Along the circumferential direction of the airbag body, the inflation interface and the deflation interface are arranged according to the fluctuation law of the sine waveform with the central axis of the airbag as the reference. Specifically, the distance between each interface and the central axis of the airbag follows a sine function relationship as the angle changes.

[0045] Furthermore, in the above technical solution, the reinforcing ribs are distributed in a grid pattern inside the airbag body 10 .

[0046] Furthermore, in the above technical solution, the inflation interface 20 and the deflation interface 30 are provided with threaded joints, and the corresponding ends of the connecting pipeline 40 are provided with connecting structures, and the connecting structures match the threaded joints.

[0047] Furthermore, in the above technical solution, the number of connecting pipelines 40 is equal to the sum of the number of inflation interfaces 20 and the number of deflation interfaces 30 .

[0048] Furthermore, in the above technical solution, the thickness of the airbag body 10 gradually decreases from the inside to the outside in the radial direction, forming a trapezoidal structure.

[0049] Furthermore, in the above technical solution, the upper limit inflation pressure of the airbag body 10 is 1.5 times the highest diastolic blood pressure value of the human body.

[0050] Furthermore, in the above technical solution, one end of the connecting pipe 40 is connected to the inflation interface 20, and the other end is connected to the inflation mechanism inside the sphygmomanometer, and the inflation mechanism includes a manual air pump or an electric micro air pump.

[0051] Furthermore, in the above technical solution, one end of the connecting pipe 40 is connected to the deflation interface 30, and the other end is connected to the exhaust mechanism inside the sphygmomanometer, and the exhaust mechanism includes an exhaust valve or a manual valve.

[0052] Specifically, the principle of the utility model is:

[0053] Sine wave distribution interface design:

[0054] Based on the principle of sine wave function, the inflation interface and the deflation interface are evenly spaced along the circumference of the airbag body, but the distance between each interface and the central axis of the airbag changes with the angle, following the sine function relationship;

[0055] Material selection and manufacturing process:

[0056] In order to ensure the effective operation of the sine wave distribution interface, the utility model selects airbag materials with good elasticity and durability, as well as highly sensitive and fast-responding pressure sensors. At the same time, precision manufacturing processes are used to ensure the sealing of the inflation and deflation interfaces with the airbag body to prevent gas leakage. In addition, the design of the inflation and deflation pipelines is optimized to reduce gas flow resistance and further improve the overall performance of the airbag device.

Claims

1. A blood pressure meter airbag device, characterized in that: The invention comprises an airbag body (10), an inflation interface (20), an air deflation interface (30), and a connecting pipeline (40); the airbag body (10) is an annular structure; a reinforcing rib structure is arranged inside the airbag body (10); the inflation interface (20) and the air deflation interface (30) are respectively arranged on the side wall of the airbag body (10); the inflation interface (20) and the airbag body (10) are integrally formed; the air deflation interface (30) and the airbag body (10) are integrally formed; there are a plurality of the inflation interface (20), the air deflation interface (30), and the connecting pipeline (40); each of the inflation interface (20) and the air deflation interface (30) is connected to a connecting pipeline (40); the other end of the connecting pipeline (40) is connected to the sphygmomanometer; Wherein, an inflation mechanism and an exhaust mechanism are arranged inside the sphygmomanometer.

2. A sphygmomanometer airbag device according to claim 1, characterized in that: The number of the inflation interfaces (20) and the deflation interfaces (30) is an even number, and the number of the inflation interfaces (20) is equal to the number of the deflation interfaces (30).

3. A sphygmomanometer airbag device according to claim 2, characterized in that: Taking the central axis of the airbag body (10) as a reference, the inflation interface (20) and the deflation interface (30) are arranged on the airbag body (10) in a mirror-symmetrical manner, the inflation interface (20) and the deflation interface (30) are arranged according to the undulation law of a sinusoidal waveform, and the inflation interface (20) and the deflation interface (30) are arranged alternately along the circumferential direction of the airbag body (10).

4. A sphygmomanometer airbag device according to claim 3, characterized in that: The reinforcing ribs are distributed in a grid pattern inside the airbag body (10).

5. A sphygmomanometer airbag device according to claim 4, characterized in that: The inflation interface (20) and the deflation interface (30) are provided with threaded joints, and corresponding ends of the connection pipeline (40) are provided with connection structures, and the connection structures match the threaded joints.

6. A sphygmomanometer airbag device according to claim 5, characterized in that: The number of the connecting pipelines (40) is equal to the sum of the number of the inflation interfaces (20) and the number of the deflation interfaces (30).

7. A sphygmomanometer airbag device according to claim 6, characterized in that: The thickness of the airbag body (10) gradually decreases from the inside to the outside in the radial direction, forming a trapezoidal structure.

8. A sphygmomanometer airbag device according to claim 7, characterized in that: The upper limit of inflation pressure of the airbag body (10) is 1.5 times the highest diastolic pressure value of the human body.

9. A sphygmomanometer airbag device according to claim 8, characterized in that: One end of the connecting pipeline (40) is connected to the inflation interface (20), and the other end is connected to the inflation mechanism inside the sphygmomanometer, wherein the inflation mechanism comprises a manual air pump or an electric micro air pump.

10. A blood pressure meter airbag device according to claim 9, characterized in that: One end of the connecting pipeline (40) is connected to the air release interface (30), and the other end is connected to the exhaust mechanism inside the sphygmomanometer, wherein the exhaust mechanism includes an exhaust valve or a manual valve.

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