CN214965561U - Expiration type spirometer - Google Patents

Abstract

The application relates to an expiratory spirometer, which consists of a cubic structure (5), wherein the cubic structure keeps an inverted bottle (1) through a support piece (6), and an outlet of the inverted bottle (1) is provided with a valve-controlled dropping device (2); the centre of one side of the cube structure (5) is provided with an exhalation nozzle (3) to impart the speed of exhaled air to the fluid droplets when the user exhales air through it. When the drop of colored droplets falls into the removable replaceable recording device (4), it determines a distance indicative of the speed of the exhaled air. Wherein the sides of the cubic structure (5) are covered with a transparent material to avoid distortions in exhaled air velocity and volume flow measurements.

Description

Expiration type spirometer

Technical Field

The invention is suitable for the early detection of respiratory diseases by spirometry, which consists of the maximum inspiration of air and its forced and continuous expiration, and is recorded graphically. These early tests may forewarn the lungs of irreversible problems 10 years ahead.

Background

Current spirometers can be used for the detection of early respiratory problems, and therefore:

i) the Design and application of a portable spirometer made of transparent acrylic, which directs exhaled air to a sensor protecting the sensor from the external current, is reported in his article "Design and application of a spirometer" (Design and implementation of a spirometer), by the aid of which the exhaled air flow exerts a pressure on the filter, whose pressure difference is converted in an electrical signal which is proportional to its intensity and therefore to the speed and volume of the exhalation. The electrical signal is processed by a microcontroller which sends it to a computer.

ii) US patent US2012/0136271a1 entitled "SPIROMETER APPARATUS AND method using the same" (SPIROMETER APPARATUS AND method using fire IN connection with the same), relates to a SPIROMETER APPARATUS, which consists of three parts: an expiratory air inlet pipe, an interconnecting and measuring intermediate region, and an expiratory air outlet pipe, wherein the intermediate connecting region is provided with two vertical parallel pipes with axial holes through which the expiratory air from the expiratory air inlet port enters axially.

The cross-sectional area of the cross-section through which the exhaled gas flow passes decreases at the second perpendicular, thereby increasing the gas flow velocity. Thus, according to the venturi principle, the outflowing air creates a low pressure by directing the air outwards.

iii) US005137026A "PERSONAL SPIROMETER" (PERSONAL SPIROMETER) comprises a self-contained portable SPIROMETER including a housing and an air tube with an aperture, a transducer and a microprocessor-based circuit within the cap that produces performance criteria measures of exhaled air, such as Forced Expiratory Volume (FEV) and Peak Expiratory Flow Rate (PEFR). These measurements are displayed on a screen of the housing. Because the air tube has a non-linear characteristic, two amplifiers with different amplification factors are coupled between the sensor and the microprocessor. The microprocessor monitors the flow through the conduit and selects a signal from any of the other amplification stages based on the flow through the conduit. The microprocessor monitors the flow to determine if no air is blowing through the duct.

This patent utilizes the venturi effect to measure the pressure differential between the inlet and outlet of a reduced area orifice in the main conduit of a spirometer.

iv) national patent application 2147/DIN (10/14/2015) entitled "air velocity meter for parabolic movement and measurement procedure" (air velocity meter by parabolic movement and measurement procedure), relates to a device and method for measuring air velocity using parabolic movement.

However, these devices have the following difficulties and/or limitations:

bellland (Beltr-n) developed spirometers that use a measurement method through a membrane to record differential pressure and convert it into an electrical signal-which does not allow direct measurement by manual or mechanical means.

US2012/0136271a1 entitled "SPIROMETER APPARATUS AND method for use THEREWITH" (respiratory APPARATUS AND method for measuring respiratory gases IN a joint system) uses the venturi effect to measure different pressures of exhaled air through a reduced section with a vertical tube with side openings opposite to the exhaled air flow-which is very complex IN arrangement AND also does not allow direct measurement by mechanical or manual means.

US005137026A "PERSONAL SPIROMETER" (persinal SPIROMETER) measures the turbulence of exhaled air as it passes through an orifice of reduced diameter, thereby measuring the volumetric flow of exhaled air-which cannot be measured manually or using non-electrical recording media.

The subject matter is "PARABOLIC motion anemometer AND MEASUREMENT program" (PARABOLIC MOVEMENT AIR VELOCITY METER AND MEASUREMENT PROCEDURE), (MEDIDOR DE LA VELOCIDAD DEL AIR POR MOVEIMIENTO PARABOLICO Y PROCEDIMINATION DE)

)2015, 10, 14, national patent application 2147-2015/DIN, relating to a device and method for measuring air velocity using parabolic motion-measuring air velocity in different directions-but not in a single induced direction, except to fulfill the function of spirometer.

Disclosure of Invention

The expiratory spirometer of the present application was developed to solve the above mentioned problems, comprising a cubic structure (5) covered on its side by a transparent material, on one of its sides concentrically inserted perpendicularly an expiratory nozzle (3). The exhalation valve (3) will constitute the element that the user uses to force incoming air in.

The valve-controlled dropping device (2) is connected with an inverted bottle (1) filled with color liquid, and the liquid drops through the valve-controlled dropping device (2) and axially enters the center of the upper surface of the cubic structure.

It is composed of a symmetrical support piece (6) for the inverted bottle, which is provided with four support rods converging into a ring on which the inverted bottle (1) is placed.

The lower part of which consists of a tray with extraction means, in which a removable and replaceable recording device (4) is housed, in which case a relative reading of the speed of the exhaled air will be taken on the spirometer, according to the horizontal distance reached by the dripping coloured liquid. The inverted bottle (1) is arranged at the top of the device, and after the inverted bottle is opened, the color liquid is sequentially dripped through the valve control type dripping device (2).

Since the output of the drop stream is perpendicular and concentric to the parallel (up and down) faces of the cube structure (5), the center of the circle placed in the removable replaceable recording unit (4) will be affected if no external forces act.

Three of the four sides of the cubic structure (5) are covered by a transparent material and the fourth side (also covered by a transparent material) has a circular void through which the exhalation nozzle (3) passes.

Once the dripping of coloured liquid has started, the user will exhale vigorously when the valve-controlled dripping means (2) are activated, so that the droplets acquire the speed of the exhaled air. When the drop falls, a series of points from which the velocity, variability and volume flow of the blown air can be determined will be marked in the detachable replaceable recording device (4) due to its color characteristics.

This means an improvement in the state of the art, as our invention is a portable, economical device for measuring the velocity and volume flow of air exhaled by a user. This measurement is direct because it is recorded by colored dots in a removable and replaceable recording device (4) located on the reference surface. However, it can also be done electronically, since the sensor can capture the range of influence of the liquid in the detachable recording device (4) and convert it into an electrical signal, which is sent to the display by the microprocessor.

The present invention uses a physical principle of parabolic motion of droplets which is simpler than the flow of venturi tubes used in most contexts.

Against this first background, the present invention can record results manually by direct reading, without using electronic methods.

With respect to the second background, the present invention is less complex because, in addition to presenting a double read option: it does not require a series of catheters and lumens other than manual and/or electronic, and the background merely presents electronic options.

With respect to the third background, the present invention may also perform measurements manually and with non-electronic recording media.

With respect to a fourth background, the measurement of the present invention utilizes a directed single flow of air exhaled by the exhalation nozzle, thereby enabling a spirometer function, whereas the background does not.

In addition to the simplicity of presentation, scaling the size of the device can accommodate portability and adaptability for both child and adult use.

In short, many times respiratory illness, requiring oxygen for late diagnosis, but severely impaired respiratory ability, etc., can be prevented by timely assessment of respiratory ability, one of the reference tests being the ability of the user to exhale air. Therefore, not only in our country, but also in poor regions worldwide, it is not permissible to have more complex devices (such as those that are mostly present in poor regions), and having a portable and transparent measuring device would help solve this problem. This is also a social innovation.

Drawings

FIG. 1: an isometric view of an expiratory spirometer is shown.

FIG. 2: a side view of an expiratory spirometer is shown.

FIG. 3: a front view of an expiratory spirometer is shown.

Description of the drawings:

1. inverted bottle

2. Valve controlled dropping device

3. Expiration nozzle

4. Detachable replaceable recording apparatus

5. Cubic structure

6. Symmetrical support for inverted bottles

Detailed Description

As mentioned above, the invention consists of an inverted bottle (1), a valve-controlled dripping device (2), an exhalation nozzle (3), a detachable and replaceable recording device (4), a cubic structure (5), and a symmetrical support (6) for the inverted bottle.

The established model has been tested to verify the correctness of the established mathematical model.

Simulations will also lead to similar results, with only metrology adjustments to the industrial-scale manufacturing prior to prototype refinement.

The following describes a preferred embodiment of the invention, which is but one of many modes of construction that can be used to develop the aforementioned techniques and constructions.

The preferred embodiment described above comprises an exhalation nozzle (3) through which the user exhales the air to be evaluated, which falls on a drop of coloured liquid which is gradually dropped by the valve-controlled dripping device (2); in this way, when the drip falls to obtain the exhaled air velocity (after the parabolic movement) a point will be marked on the detachable replacement recording device (4), at which point the air velocity can be read, as well as the volume flow function with respect to the area of the exhalation valve (3).

Another embodiment is the same arrangement and operation, except that the detachable replacement recording device (4) will have a sensor to convert the horizontal displacement signal into an electrical signal that is passed through a microprocessor and then sent to a display.

The invention is applicable to the biomedical device industry, such as spirometers.

Claims (7)

1. The utility model provides an expiration formula spirometer, includes inversion bottle (1), valve accuse formula dropping device (2), exhales mouth (3), dismantles alternative recorder (4), cubic structure (5) and be used for inversion bottle symmetry formula support piece (6), a serial communication port, the dropping liquid that valve accuse formula dropping device (2) dripped can obtain parabolic motion because of the air current that comes from exhaling mouth (3) to strike when falling to dismantlement alternative recorder (4), dismantle the speed of exhaled air will be confirmed to the horizontal distance that receives in alternative recorder (4), the horizontal distance is the distance of plumb point to valve accuse formula dropping device (2).

2. An expiratory spirometer according to claim 1, characterized in that said cubic structure (5) comprises sides covered by transparent material, one of which is inserted with an expiratory nozzle (3) centered and perpendicular to the face, said expiratory nozzle (3) being the element into which the user forces the expiratory air.

3. An expiratory spirometer according to claim 1, characterized in that the detachable replacement registering means (4) is constituted by a cartesian plane with its axis coinciding with the perpendicularity of the valved dropping means (2).

4. Expiratory spirometer according to claim 1, characterized in that the transparent material covering the cubic structure (5) is glass.

5. Expiratory spirometer according to claim 1, characterized in that the cubic structure (5) consists of a tray with extraction means, said tray containing removable replaceable recording means (4).

6. Expiratory spirometer according to claim 1, characterized in that the detachable replacement recording means (4) is made of an absorbent material.

7. An expiratory spirometer according to claim 1, characterized in that the detachable replacement recording means (4) comprises a sensor which sends a signal to a transducer which converts the signal into an electrical signal which is then sent to a microprocessor and further to a display.

Images