CN216317606U - Lung function detection instrument adaptation blow gun - Google Patents

Abstract

Pulmonary function detecting instrument adaptation blow gun relates to medical instrument technical field, and it includes the guard shield, and the connecting pipe is installed to the bottom of guard shield, the inside of guard shield is equipped with can be contained the spheroid blow gun in the oral cavity, and the spheroid blow gun is cavity form and its surface has laid a plurality of through-holes, and the spheroid blow gun is connected with the breather pipe, and the breather pipe bottom is inserted in the connecting pipe and is provided with the piston, and the side global of piston matches with the internal face of connecting pipe and supports and lean on the internal face in the connecting pipe, and the piston can remove in the connecting pipe, is provided with only can supply gas from the breather pipe bottom mouth of pipe toward outer exhaust check valve in the mouth of pipe of the bottom mouth of pipe of breather pipe, and it is protruding to fix on the bottom mouth of pipe internal face of connecting pipe to be provided with the annular, the bellied internal diameter size of annular is used for and the intake nozzle external diameter size phase-match of pulmonary function detecting instrument. The utility model can be conveniently and stably butted with the mouth to smoothly receive the exhaled air, and is very suitable for young or tense testees.

Description

Pulmonary function testing instrument adapted to mouthpiece

technical field

The utility model relates to the technical field of medical devices, in particular to a mouthpiece adapted to a lung function detection instrument.

Background technique

Respiratory system diseases affect people deeply. In order to improve the popularity of lung function testing, more and more hospitals or health departments have begun to use lung function testing instruments to check people's lung function. Exhale.

The expiratory carbon dioxide volume curve, also known as volume capnography (VCap), is one of the methods for measuring the gas distribution in the lungs. In order to ensure the accuracy of the detection, the subject needs to fully exhale the air in the lungs as much as possible. However, when many subjects are currently performing exhaled gas detection, there are often the following problems: 1. It is difficult to open the mouth due to tension, thus limiting exhalation. 2. It is difficult for young subjects to hold the mouthpiece firmly, and it is easy to break free, which makes the detection process unable to proceed smoothly. 3. Exhaled air contains more water, which affects the accuracy of the test results.

Utility model content

The purpose of the utility model is to provide a pulmonary function detection instrument adapted to a mouthpiece, which can facilitate stable docking with the mouth to receive exhaled gas smoothly, and is very suitable for young or nervous subjects to use.

In order to solve the above-mentioned technical problems, the present invention adopts the following technical solutions: a pulmonary function detection instrument adapted to a mouthpiece, including a protective cover, a connecting pipe is installed at the bottom end of the protective cover, and a A spherical mouthpiece contained in the oral cavity, the spherical mouthpiece is hollow and has a plurality of through holes on its surface, the spherical mouthpiece is connected with a ventilation pipe, and the bottom end of the ventilation pipe is inserted into the connecting pipe and provided with Piston, the side peripheral surface of the piston is matched with the inner wall surface of the connecting pipe and abuts against the inner wall surface of the connecting pipe, the piston can move in the connecting pipe, and the bottom end of the vent pipe is provided with a gas-only nozzle The one-way valve is discharged from the bottom end of the vent pipe, the inner wall of the bottom end of the connecting pipe is fixed with an annular protrusion, the inner wall of the annular protrusion is provided with a sealing ring, and the annular protrusion is The inner diameter is used to match the outer diameter of the air intake nozzle of the pulmonary function testing instrument.

Further, the one-way valve includes a ventilation plate arranged at the bottom end of the ventilation pipe, a valve plate arranged inside the ventilation pipe and located above the ventilation plate, and a ball valve core located between the ventilation plate and the valve plate. The vent holes are evenly distributed, the valve plate is conical and the top end is provided with valve holes, the ball valve core is a hollow plastic sphere, the height between the vent plate and the valve plate is greater than the diameter of the ball valve core, blowing When inhaling, the gas blown out of the valve hole can push the ball valve core and make it abut against the ventilation plate. When inhaling, the ball valve core can press against the valve plate under the action of negative pressure to block the valve hole .

Wherein, the side circumference of the ball valve core is provided with four limit posts, and the four limit posts are used to limit the displacement of the ball valve core when it moves up and down between the vent plate and the valve plate.

Preferably, the bottom end of the shield is provided with a short pipe part, and the short pipe part is connected with the connecting pipe by plugging.

More preferably, a layer of perfluorosulfonic acid ion-exchange membrane for absorbing moisture in the gas is provided on the inner wall surface of the spherical mouthpiece and the inner wall surface of the ventilation pipe.

More preferably, the edges of the shield are provided with latex pads.

More preferably, both the shield and the spherical mouthpiece are made of plastic material.

The beneficial effect of the utility model is that: by adapting the pulmonary function detection instrument to the mouthpiece and connecting it to the pulmonary function detection instrument, the subject can hold the spherical mouthpiece in the mouth while covering the mouth with the protective mask. , and then you can start blowing by closing your lips naturally. Since the spherical mouthpiece can open the mouth, the gas can enter the ventilation tube from the spherical mouthpiece in the mouth and finally enter the lung function testing instrument, so it can avoid the subject's nervousness. Opening the mouth makes the detection difficult. Not only that, because the spherical mouthpiece is contained in the mouth, the entire mouthpiece can be well maintained for young test subjects who have difficulty grasping the overall structure of the mouthpiece. stability for smooth air blow detection.

Description of drawings

1 is a schematic diagram of the overall structure of the utility model when connected to a lung function detection instrument;

Fig. 2 is the structural schematic diagram of the shield and the connecting pipe in the embodiment;

Fig. 3 is the structural representation of spherical mouthpiece, vent pipe and piston in the embodiment;

FIG. 4 is an enlarged schematic view of the structure at A in FIG. 1 .

The reference numbers are:

1——Shield 2——Connecting tube 3——Bubble mouthpiece

4——Through hole 5——Ventilation pipe 6——Piston

7——Annular protrusion 8——Sealing ring 9——Pulmonary function testing instrument

10a——Vent plate 10b——Valve plate 10c——Ball valve core

10d——Limiting column.

Detailed ways

In order to facilitate the understanding of those skilled in the art, the present invention will be further described below with reference to the embodiments and the accompanying drawings, and the contents mentioned in the embodiments are not intended to limit the present invention.

It should be noted in advance that in the present utility model, unless otherwise expressly specified and limited, terms such as "installation", "connection", "connection", "fixing" should be understood in a broad sense, for example, it may be a fixed connection , or detachable connection, or integral connection; direct connection, indirect connection through an intermediate medium, or internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In addition, in the present invention, unless otherwise expressly specified and limited, the first feature "on" or "under" the second feature may include direct contact between the first and second features, or may include the first and second features The features are not in direct contact but through additional features between them. Also, the first feature being "above", "over" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature is "below", "below" and "below" the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature has a lower level than the second feature. Terms "top", "bottom", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, with a specific orientation. The orientation configuration and operation are therefore not to be construed as limitations of the present invention.

As shown in Figures 1-3, the pulmonary function testing instrument is adapted to a mouthpiece, including a shield 1, a connecting tube 2 is installed at the bottom end of the shield 1, and the interior of the shield 1 is provided with a spherical blower that can be contained in the oral cavity. Mouth 3, the spherical mouthpiece 3 is hollow and its surface is provided with a plurality of through holes 4, the spherical mouthpiece 3 is connected with a ventilation pipe 5, and the bottom end of the ventilation pipe 5 is inserted into the connecting pipe 2 and is provided with a piston 6, the piston 6 The side peripheral surface is matched with the inner wall surface of the connecting pipe 2 and abuts against the inner wall surface of the connecting pipe 2, the piston 6 can move in the connecting pipe 2, and the bottom end of the ventilation pipe 5 is provided with a nozzle that can only supply gas from the ventilation pipe 5. The one-way valve that discharges from the bottom end nozzle, the inner wall surface of the bottom end nozzle of the connecting pipe 2 is fixedly provided with an annular protrusion 7, the inner wall surface of the annular protrusion 7 is provided with a sealing ring 8, and the inner diameter of the annular protrusion 7 is determined by to match the outer diameter of the air intake nozzle of the pulmonary function testing instrument 9 .

When the pulmonary function testing instrument provided by the above-mentioned embodiment is adapted to the mouthpiece, the air intake nozzle of the pulmonary function testing instrument 9 can be inserted from the bottom end of the connecting pipe 2, and then abutted against the bottom end of the piston 6, and the ventilation pipe 5 The diameter of the pipe is smaller than that of the air inlet nozzle of the pulmonary function testing instrument 9, so the gas blown out of the ventilation pipe 5 can enter the pulmonary function testing instrument 9. At the same time, under the action of the annular protrusion 7 and the sealing ring 8 , the air intake nozzle of the lung function testing instrument 9 can achieve a relatively close plug-in fit with the connecting pipe 2, and it is generally difficult to slip out easily under the action of resistance.

After the connection is completed, the subject can put the spherical mouthpiece 3 into the mouth while covering the mouth with the shield 1, and then naturally close the lips to start blowing, because the spherical mouthpiece 3 can open the mouth , the gas can enter the ventilator 5 from the spherical mouthpiece 3 in the mouth and finally enter the lung function testing instrument 9, so it can avoid the problem that the test is difficult to carry out because the subject cannot open the mouth due to tension, and because the piston 6 can move , so that the position of the spherical mouthpiece 3 can be adjusted to a certain extent to adapt to different subjects. Not only that, because the spherical mouthpiece 3 is contained in the mouth, it is difficult for young people to grasp the overall structure of the mouthpiece. For the user, the stability of the entire mouthpiece can be well maintained for smooth blowing detection, and it can maintain calm exhalation during the blowing process, so it is more suitable for the elderly and children.

It should be noted that due to the cooperation between the piston 6 and the connecting tube 2 (similar to the structure of a syringe), there is a certain resistance when the piston 6 moves in the connecting tube 2. When used by young subjects, the It will not easily happen that the spherical mouthpiece 3 and the ventilation pipe 5 are separated from the connecting pipe 2 and cause accidental swallowing. In fact, in order to match subjects of different age groups, the volume sizes of the shield 1 and the spherical mouthpiece 3 can also be designed into different specifications.

Secondly, the spherical mouthpiece 3 and the ventilation tube 5 can be made into disposable products according to the actual situation, so that they can be provided to different subjects after replacement, or they can be cleaned and sterilized after use for repeated use.

Further, as shown in FIG. 4 , the one-way valve includes a ventilation plate 10a disposed at the bottom end of the ventilation pipe 5, a valve plate 10b disposed inside the ventilation pipe 5 and located above the ventilation plate 10a, and located between the ventilation plate 10a and the valve plate 10b The ball valve core 10c, the ventilation holes are evenly distributed on the ventilation plate 10a, the valve plate 10b is conical and the top end is provided with a valve hole, the ball valve core 10c is a hollow plastic sphere, the height between the ventilation plate 10a and the valve plate 10b The diameter of the valve core 10c is larger than the diameter of the ball valve core 10c. When blowing air, the gas blown from the valve hole can push the ball valve core 10c and make it abut against the ventilation plate 10a. When inhaling, the ball valve core 10c can be pressed against the negative pressure. on the valve plate 10b to block the valve hole. By arranging the one-way valve structure, it is convenient for the test subject to inhale in reverse suddenly during the blowing process, so that the gas entering the pulmonary function testing instrument 9 is sucked back again, and to a certain extent, the subject can be prevented from being inhaled. Re-inhale new air so that when it finds that it cannot be inhaled, it can continue to blow the air out of the lungs completely again.

Those skilled in the art should know that when the subject holds the spherical mouthpiece 3 in his mouth and seals the vent pipe 5 with his lips, the blown gas can be basically guaranteed not to escape, but in the actual operation process, it is inevitable that there will be slight air leakage, and Even if the existing mouthpiece structure with only a shield is used, air leakage will occur due to incomplete sealing. Therefore, a slight air leakage will not significantly affect the test results, and the test subject can pass more tests. Blow twice, and combine the results of multiple tests to determine the lung condition.

Preferably, four limit posts 10d are provided around the side of the ball valve core 10c, and the four limit posts 10d are used to limit the up and down movement of the ball valve core 10c between the ventilation plate 10a and the valve plate 10b Offset occurs to improve the stability and reliability of the check valve operation.

More preferably, the bottom end of the shield 1 is provided with a short pipe part, and the short pipe part is connected with the connecting pipe 2 by plugging, so that the shield 1 can also be replaced when necessary, and the connecting pipe 2 is The cost of consumables can be reduced by more repeated use after cleaning.

More preferably, the inner wall surface of the spherical mouthpiece 3 and the inner wall surface of the ventilation pipe 5 are provided with a layer of perfluorosulfonic acid ion exchange membrane for absorbing moisture in the gas, so as to facilitate the moisture removal of the exhaled gas of the subject. Absorb and reduce the moisture content of the gas entering the lung function testing instrument 9, and improve the accuracy of the testing results.

In addition, in this embodiment, the edge of the shield 1 is provided with a latex pad. Both the shield 1 and the spherical mouthpiece 3 are made of plastic material, which is low in cost, light in weight and easy to use.

The above-mentioned embodiments are the preferred implementation solutions of the present invention. In addition, the present invention can also be realized in other ways. Any obvious replacements are within the protection scope of the present invention without departing from the concept of the technical solution. Inside.

In order to make it easier for those skilled in the art to understand the improvements of the present invention relative to the prior art, some drawings and descriptions of the present invention have been simplified, and for the sake of clarity, some other elements, those of ordinary skill in the art would realize that these omitted elements may also constitute the content of the present invention.

Claims (7)

1. The pulmonary function testing instrument is adapted to a mouthpiece, including a shield (1), and a connecting pipe (2) is installed at the bottom end of the shield (1), characterized in that: the inner part of the shield (1) is provided with a connecting pipe (2). There is a spherical mouthpiece (3) that can be contained in the oral cavity, the spherical mouthpiece (3) is hollow and a plurality of through holes (4) are arranged on its surface, and the spherical mouthpiece (3) is connected with a through hole (4). The air pipe (5), the bottom end of the ventilation pipe (5) is inserted into the connecting pipe (2) and is provided with a piston (6), the side peripheral surface of the piston (6) is matched with the inner wall surface of the connecting pipe (2) and is Abutting against the inner wall surface of the connecting pipe (2), the piston (6) can move in the connecting pipe (2), and the bottom end nozzle of the venting pipe (5) is provided with a port that can only supply gas from the venting pipe ( 5) A one-way valve that discharges from the bottom end nozzle, the inner wall surface of the bottom end nozzle of the connecting pipe (2) is fixedly provided with an annular protrusion (7), and the inner wall surface of the annular protrusion (7) is provided with a The sealing ring (8), the inner diameter of the annular protrusion (7) is used to match the outer diameter of the air intake nozzle of the lung function testing instrument (9). 2. The pulmonary function testing instrument adapting mouthpiece according to claim 1, characterized in that: the one-way valve comprises a ventilation plate (10a) arranged at the bottom end of the ventilation pipe (5), The valve plate (10b) inside and located above the ventilation plate (10a), and the ball valve core (10c) located between the ventilation plate (10a) and the valve plate (10b), the ventilation plate (10a) is evenly distributed with a valve plate (10a). Air holes, the valve plate (10b) is conical and the top end is provided with a valve hole, the ball valve core (10c) is a hollow plastic sphere, the height between the ventilation plate (10a) and the valve plate (10b) larger than the diameter of the ball valve core (10c), when blowing air, the gas blown from the valve hole can push the ball valve core (10c) and make it abut against the ventilation plate (10a), when inhaling, the ball valve The core (10c) can abut against the valve plate (10b) under the action of negative pressure to block the valve hole. 3. The pulmonary function testing instrument adapted mouthpiece according to claim 2, characterized in that: four limit posts (10d) are arranged around the side circumference of the spherical valve core (10c), and the four The limiting column (10d) is used to limit the deflection of the ball valve core (10c) when it moves up and down between the vent plate (10a) and the valve plate (10b). 4. The pulmonary function testing instrument adapted to the mouthpiece according to claim 1, characterized in that: the bottom end of the shield (1) is provided with a short pipe part, and the short pipe part and the connecting pipe (2) pass through Plug-in connection. 5. The pulmonary function testing instrument adapting mouthpiece according to claim 1, characterized in that: the inner wall surface of the spherical mouthpiece (3) and the inner wall surface of the ventilation tube (5) are provided with a layer for absorbing gas Moisture inside the perfluorosulfonic acid ion exchange membrane. 6 . The lung function testing instrument adapted to the mouthpiece according to claim 1 , characterized in that: the edge of the shield ( 1 ) is provided with a latex pad. 7 . 7. The mouthpiece adapted to the lung function testing instrument according to any one of claims 1-5, wherein the shield (1) and the spherical mouthpiece (3) are both made of plastic material.

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