A pediatric lung function testing device

Abstract

This utility model discloses a pediatric pulmonary function testing device. The device includes a main body and a valve tube installed on the main body for controlling the entry of exhaled gas into the device. A mouthpiece is installed on the valve tube, and a fixed rod and a telescopic rod control the flow of exhaled gas into the airway. The pediatric pulmonary function testing device provided by this utility model achieves the effect of controlling the entry of exhaled gas into the device through the valve tube. Simultaneously, a spring controls the pressure between the exhalation mask and the skin at the mouth. When the pressure reaches a sealing effect between the exhalation mask and the skin, the valve tube precisely allows the exhaled gas to pass through. This provides guidance for children using the device and improves the accuracy of the test results.

Description

Technical Field

[0001] This utility model relates to the field of lung function testing technology, and in particular to a lung function testing device for children. Background Technology

[0002] In the medical field, peak flow meters are used to measure peak expiratory flow rate in the human body, helping to diagnose and monitor respiratory diseases such as asthma and chronic obstructive pulmonary disease (COPD). Patients can understand changes in their condition and adjust their treatment plans in a timely manner by regularly measuring peak flow rate. Peak flow meters are simple and convenient to use, and patients can monitor themselves at home. They are an important tool for assessing lung function and preventing acute asthma attacks.

[0003] The prior art discloses a mask-type peak velocity meter, including a peak velocity meter with an air inlet tube at the air inlet end. The air inlet tube is connected to a mask, and the mask has an opening on the side facing the air inlet tube that can communicate with the air inlet tube. This utility model has a simple structure and can conveniently and accurately measure specific values ​​when performing lung capacity tests for patients with facial muscle atrophy, lip muscle defects, or other neurological diseases that cause weak biting. It avoids the problem that the mouth or tongue muscles cannot make close contact with the outer wall of the peak velocity meter's air inlet tube.

[0004] However, children cannot accurately apply pressure between the mask and their mouth to ensure a tight seal, and it is also difficult to determine whether the mask is leaking during testing.

[0005] Therefore, it is necessary to provide a pediatric lung function testing device to solve the above-mentioned technical problems. Utility Model Content

[0006] In order to overcome the shortcomings of the existing technology, this utility model provides a children's lung function testing device that allows children to apply pressure between the mask and their mouth more accurately during the testing process.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A pediatric pulmonary function testing device includes: a main body and a valve tube installed on the main body for controlling the entry of blown gas into the device, wherein a mouthpiece is installed on the valve tube;

[0009] The mouthpiece includes an air blowing cover, and the lower end of the air blowing cover is provided with a connecting pipe;

[0010] The valve tube includes a fixed rod and a telescopic rod slidably mounted on the fixed rod, and the sliding between the fixed rod and the telescopic rod is damped.

[0011] The body includes a housing, the detection element is located inside the housing, and the housing is provided with an air passage for gas inflow;

[0012] The fixed rod and the telescopic rod can control the flow of the blown gas into the air passage.

[0013] Preferably, the lower end of the telescopic rod is provided with a spring, the lower end of the spring is located on the machine body, the lower end of the telescopic rod is provided with a first air hole, a rubber sheet is provided at the first air hole, the side wall of the fixed rod is provided with a second air hole, and a push rod is provided at the upper end of the outer shell at a position corresponding to the first air hole.

[0014] Preferably, the outer shell is annular.

[0015] Preferably, the inner side of the annular outer shell is provided with a hand adhesive, and the surface of the hand adhesive has protrusions.

[0016] Preferably, the connecting pipe is connected to the telescopic rod via a socket joint.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] (1) This utility model achieves the effect of controlling the blown gas entering the device by setting a valve tube, and at the same time controls the pressure between the blowing mask and the skin of the mouth by a spring. When the pressure reaches the sealing effect between the blowing mask and the skin, the valve tube just allows the blown gas to pass through. This achieves the guidance function for children when using the device, so as to improve the accuracy of the test results.

[0019] (2) Users of this utility model can hold the ring-shaped outer shell with both hands, which makes it easy to exert force. At the same time, the device is not easy to fall to the ground due to rolling when placed on the table. It can also be hung on the wall for easy storage and drying after cleaning.

[0020] (3) The surface of the hand glue of this utility model has raised bumps. The hand glue is made of silicone. When the user blows air, the hand grips the outer shell tightly. The soft hand glue can reduce the pressure between the user's hand and the outer shell, making it more comfortable to hold while preventing slippage. Attached Figure Description

[0021] Figure 1 A schematic diagram of the pediatric pulmonary function testing device provided by this utility model;

[0022] Figure 2 A cross-sectional view of the pediatric pulmonary function testing device provided by this utility model;

[0023] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0024] The corresponding names of the reference numerals in the attached drawings are as follows: 10, mouthpiece; 11, air blowing cover; 12, connecting pipe; 20, valve pipe; 21, telescopic rod; 211, first air hole; 212, rubber sheet; 22, fixing rod; 221, second air hole; 23, spring; 30, body; 31, push rod; 32, sealing cover; 33, air passage; 34, outer shell; 341, hand glue. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments. The embodiments of the present invention include, but are not limited to, the following embodiments.

[0026] A peak flow meter is a portable medical device used to measure expiratory flow rate. It assesses the degree of airway obstruction by monitoring the maximum expiratory flow rate (PEF). It mainly consists of a shell, a vernier, a scale, and a mouthpiece. When in use, the patient takes a deep breath and then exhales forcefully. The vernier slides to the highest value, helping to record the trend of PEF value changes. The mouthpiece is generally cylindrical or, as disclosed in existing technology, a mask-like shape. The inventors discovered that when children use a peak flow meter to measure lung function, due to their limited strength, it is difficult for them to determine how much pressure is needed between their mouth and the mouthpiece or mask to ensure no air leakage. If there were a measuring device that could only perform a measurement when the pressure between the mask and the mouth reaches a seal, it would help improve the accuracy of measurements for children.

[0027] First embodiment:

[0028] like Figure 1-3 As shown, the pediatric lung function testing device provided by this utility model includes: a body 30 for hand gripping, the body 30 being the main body of the device and the functional area, and its shape is as follows. Figure 1 As shown, the valve tube 20 installed on the body 30 to control the flow of blown gas into its internal structure is described in detail below. The nozzle 10 is installed on the valve tube 20, and the user blows air into the device from the nozzle 10.

[0029] Specifically, the mouthpiece 10 includes an air mask 11, which is made of medical-grade hard plastic, such as... Figure 1 As shown, its shape is similar to a funnel, with a larger opening at the top that contacts the user's mouth, and a connecting pipe 12 fixedly connected to the lower opening. The connecting pipe 12 is installed on the telescopic rod 21.

[0030] The valve tube 20 consists of two parts: a cylindrical telescopic rod 21 located at the upper end and a cylindrical fixed rod 22 nested outside the telescopic rod 21. The telescopic rod 21 has an opening at the upper end and a first air hole 211 for gas to flow through at the lower end. A rubber sheet 212 is placed on the upper part of the first air hole 211. The rubber sheet 212 is made of elastic circular rubber material. The diameter of the rubber sheet 212 is larger than the diameter of the first air hole 211 and covers its upper end. A small section of the edge of the rubber sheet 212 is fixed to the bottom of the telescopic rod 21 by thermoplastic process or glue. In this way, the gas inside the telescopic rod 21 from top to bottom is blocked by the rubber sheet 212 and cannot pass through the first air hole 211. Only when the rubber sheet 212 is lifted can the gas pass through the first air hole 211. On the other hand, a spring 23 is placed inside the fixed rod 22. The upper end of the spring 23 is fixedly installed at the bottom of the telescopic rod 21, and the lower end is fixedly installed at the upper end of the outer shell 34 of the body 30.

[0031] The upper end of the fixing rod 22 is open, and the lower end is fixed to the upper end of the body 30. At the same time, a cylindrical push rod 31 is fixed on the body 30 directly below the first air hole 211. The push rod 31 is half the diameter of the first air hole 211. A second air hole 221 for gas to pass through is provided in each of the four directions on the side wall of the fixing rod 22. The gas discharged from the second air hole 221 enters the sealed cavity formed by the sealing cover 32 and the upper end of the outer shell 34 of the body 30.

[0032] The functional parts of the device, such as the detection element or the battery, are installed in the cavity surrounded by the housing 34. The specific installation position can be determined according to the actual size of the element, etc., which will not be elaborated here. The housing 34 is provided with a gas channel 33 for gas inflow, which is connected to the measuring element.

[0033] The user's mouth applies pressure to the telescopic rod 21 through the air inflator 11. The telescopic rod 21 transmits this pressure to the spring 23, compressing the spring. Simultaneously, the telescopic rod 21 slides downwards along the inside of the fixed rod 22. As the telescopic rod 21 moves downwards, the rubber sheet 212 at the bottom of the telescopic rod 21 gradually approaches the push rod 31, increasing the elasticity of the spring 23. Therefore, the pressure between the air inflator 11 and the user's skin near the mouth also increases. Figure 3 As shown, when the push rod 31 contacts the rubber sheet 212 and pushes the rubber sheet 212 up, the user blows air into the air blowing cover 11. The first air hole 211 is in the open state, and the gas enters the fixed rod 22 through the first air hole 211, then enters the cavity of the sealing cover 32 through the second air hole 221 on the side wall of the fixed rod 22, and finally enters the measuring element through the air passage 33. It should be noted that the measuring element is a prior art technology and can be separated from the device as a separate functional area. This application only improves the blowing part, and the measuring element is not described in detail.

[0034] By setting the valve tube 20, the effect of controlling the blowing gas entering the device is achieved. At the same time, the pressure between the blowing mask 11 and the skin at the mouth is controlled by the spring 23. When the pressure reaches the sealing effect between the blowing mask 11 and the skin, the valve tube 20 just allows the blowing gas to pass through. This achieves the guidance function for children when using the device, thereby improving the accuracy of the test results.

[0035] Second embodiment:

[0036] like Figure 1 As shown, the outer shell 34 is ring-shaped. Compared with the existing cylindrical outer shell 34, the user can hold the ring-shaped outer shell 34 with both hands, which makes it easier to exert force. At the same time, the device is less likely to roll and fall to the ground when placed on a table. It can also be hung on the wall for easy storage and drying after cleaning.

[0037] Third embodiment:

[0038] like Figure 1 As shown, a grip tape 341 is provided on the inner side of the annular outer shell 34. The surface of the grip tape 341 has protrusions. The grip tape 341 is made of silicone. When the user blows air, the user's hand grips the outer shell 34 tightly. The soft grip tape 341 can reduce the pressure between the user's hand and the outer shell 34, making it more comfortable to hold while preventing slippage.

[0039] Fourth embodiment:

[0040] like Figure 3 As shown, the connecting pipe 12 is connected to the telescopic rod 21 by a socket joint. The connecting pipe 12 is a flexible plastic pipe, and the telescopic rod 21 is a rigid plastic pipe. The inner diameter of the connecting pipe 12 is slightly smaller than the outer diameter of the telescopic rod 21. The two are connected by an interference fit so that the connecting pipe 12 is squeezed and fitted onto the telescopic rod 21 to achieve a stable connection and airtightness. At the same time, the connecting pipe 12 can be easily cleaned independently after being removed from the telescopic rod 21.

[0041] In use, first install the clean mouthpiece 10 on the telescopic rod 21. Then, the user keeps the skin of the mouth in contact with the mouthpiece 10 and firmly attached. During this process, the telescopic rod 21 is pushed and moves towards the bottom of the fixed rod 22. At this time, the push rod 31 pushes open the rubber sheet 212 on the first air hole 211, causing the first air hole 211 to be opened. Then, the gas enters the airway 33 through the first air hole 211 and the second air hole 221 for measurement.

[0042] The above embodiments are merely one of the preferred embodiments of this utility model and should not be used to limit the scope of protection of this utility model. Any modifications or refinements made to the main design concept and spirit of this utility model that are not of substantial significance, but solve the same technical problem as this utility model, should be included within the scope of protection of this utility model.

Claims

1. A pediatric pulmonary function testing device, characterized in that, include: The body (30) and a valve tube (20) mounted on the body (30) for controlling the flow of blown gas into its interior, wherein a nozzle (10) is mounted on the valve tube (20); The mouthpiece (10) includes an air blowing cover (11), and the lower end of the air blowing cover (11) is provided with a connecting pipe (12); The valve tube (20) includes a fixed rod (22) and a telescopic rod (21) slidably mounted on the fixed rod (22), wherein the sliding between the fixed rod (22) and the telescopic rod (21) is damped; The body (30) includes a housing (34), the detection element is located inside the housing (34), and the housing (34) is provided with an air passage (33) for gas inflow; The fixed rod (22) and the telescopic rod (21) can control the flow of the blown gas into the airway (33).

2. The pediatric pulmonary function testing device according to claim 1, characterized in that, The lower end of the telescopic rod (21) is provided with a spring (23), the lower end of the spring (23) is located on the body (30), the lower end of the telescopic rod (21) is provided with a first air hole (211), a rubber sheet (212) is provided at the first air hole (211), the side wall of the fixed rod (22) is provided with a second air hole (221), and a push rod (31) is provided at the upper end of the outer shell (34) at a position corresponding to the first air hole (211).

3. The pediatric pulmonary function testing device according to claim 2, characterized in that, The outer shell (34) is annular.

4. The pediatric pulmonary function testing device according to claim 3, characterized in that, The inner side of the annular outer shell (34) is provided with a hand adhesive (341), and the surface of the hand adhesive (341) has protrusions.

5. The pediatric pulmonary function testing device according to claim 2 or 4, characterized in that, The connecting pipe (12) is connected to the telescopic rod (21) by a socket.

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