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CN221750448U - Disposable mouthpiece capable of detecting respiratory flow - Google Patents

Disposable mouthpiece capable of detecting respiratory flow Download PDF

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Publication number
CN221750448U
CN221750448U CN202322824334.8U CN202322824334U CN221750448U CN 221750448 U CN221750448 U CN 221750448U CN 202322824334 U CN202322824334 U CN 202322824334U CN 221750448 U CN221750448 U CN 221750448U
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CN
China
Prior art keywords
mouthpiece
section
pressure
differential pressure
disposable
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Active
Application number
CN202322824334.8U
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Chinese (zh)
Inventor
赵德政
王尊家
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Qingdao Wanruibao Intelligent Medical Co ltd
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Qingdao Wanruibao Intelligent Medical Co ltd
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Priority to CN202322824334.8U priority Critical patent/CN221750448U/en
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Publication of CN221750448U publication Critical patent/CN221750448U/en
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  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Abstract

The utility model provides a disposable mouthpiece capable of detecting respiratory flow, which comprises a mouthpiece part and a differential pressure flow detection part, wherein the mouthpiece part is a hollow circular tube, the differential pressure flow detection part comprises a venturi tube structure, a differential pressure pore plate and a differential pressure acquisition part, the venturi tube structure comprises an inlet section, a contraction section and a laryngeal section which are connected in sequence, and the disposable mouthpiece is characterized in that: the differential pressure orifice plate is arranged in the throat section of the venturi tube structure, the mouthpiece is connected with the inlet and outlet section of the venturi tube structure, and the mouthpiece and the differential pressure flow detection part are of an integrated structure. The differential pressure orifice plate is the perforated plate that has the center round hole and encircle the round hole, and differential pressure collection part is including setting up first pressure taking mouth and the second pressure taking mouth on the throat lateral wall of differential pressure orifice plate both sides. The device has the advantages of simple structure, accurate measurement, convenient use and lower manufacturing cost, and is suitable for disposable use.

Description

Disposable mouthpiece capable of detecting respiratory flow
Technical Field
The utility model belongs to the technical field of medical appliances, relates to an improvement of a lung function detection technology, and particularly relates to a disposable mouthpiece capable of detecting respiratory flow.
Background
The lung function detection is a necessary detection means in the respiratory system disease treatment process, and the lung detection equipment is used for detecting indexes such as the lung capacity of a tester, so that the condition of the tester is judged, when the lung detection equipment is used, the tester needs to be communicated with a pipeline of the lung detection equipment through a mouthpiece, and the tester blows air into the lung detection equipment through the mouthpiece, so that the lung capacity is detected. In order to ensure the safety and sanitation of detection and prevent cross infection, a disposable respiratory mouthpiece is commonly used at present.
Under the test lung function scene, the present equipment is when using with stings mouth, filter and flowmeter combination, and the flowmeter is because the structure is complicated, and the cost of manufacture is higher, consequently, need disinfection back used repeatedly, increased medical personnel's work load, it is inconvenient to use.
Therefore, how to design a disposable mouthpiece capable of detecting respiratory flow, the structure is simple, the measurement is accurate, the use is convenient, the manufacturing cost is low, and the disposable mouthpiece is suitable for disposable use. This is a technical problem to be solved in the art.
Disclosure of Invention
In order to solve the problems in the prior art, the utility model provides the disposable mouthpiece capable of detecting the respiratory flow, which has the advantages of simple structure, accurate measurement, convenient use and low manufacturing cost, and is suitable for disposable use.
The utility model aims at realizing the following technical scheme:
The disposable mouthpiece capable of detecting respiratory flow comprises a mouthpiece part and a differential pressure flow detection part, wherein the mouthpiece part is a hollow circular tube, the differential pressure flow detection part comprises a venturi tube structure, a differential pressure pore plate and a differential pressure acquisition part, and the venturi tube structure comprises an inlet section, a contraction section and a throat section which are sequentially connected.
The improvement of the technical scheme is as follows: the differential pressure orifice plate is the perforated plate that has the center round hole and encircle the round hole, differential pressure collection part is including setting up first pressure taking mouth and the second pressure taking mouth on the laryngeal section lateral wall of differential pressure orifice plate both sides.
Further improvement of the technical scheme is as follows: the outlet end of the laryngeal section is provided with a diffusion section, the contraction sections at the two ends of the laryngeal section are symmetrically arranged with the diffusion section, the first pressure taking opening and the second pressure taking opening are symmetrically arranged on the side wall of the same side of the laryngeal section by taking the pressure difference pore plate as a symmetrical center, and the first pressure taking opening and the second pressure taking opening are both positioned on the horizontal plane where the axis of the laryngeal section is positioned and are used for realizing bidirectional fluid flow monitoring.
Further improvement of the technical scheme is as follows: the differential pressure pore plate is a thin-wall circular plate, the periphery of the differential pressure pore plate is connected with the inner wall of the throat section, and the diameter of the central circular hole is larger than that of the surrounding circular hole around the central circular hole.
Further improvement of the technical scheme is as follows: two buckles used for being connected with the differential pressure type pulmonary function instrument are symmetrically arranged on the outer side wall of the laryngeal opening section, the first pressure taking opening is connected with a first pressure taking pipe, the second pressure taking opening is connected with a second pressure taking pipe, and the first pressure taking pipe and the second pressure taking pipe penetrate through the same buckle and are led out downwards for butt joint of sensor interfaces of the differential pressure type pulmonary function instrument.
Further improvement of the technical scheme is as follows: two buckles used for being connected with the differential pressure type pulmonary function instrument are symmetrically arranged on the outer side wall of the laryngeal opening section, the first pressure taking opening is connected with a first pressure taking pipe, the second pressure taking opening is connected with a second pressure taking pipe, and the first pressure taking pipe and the second pressure taking pipe penetrate through the same buckle and are led out downwards for butt joint of sensor interfaces of the differential pressure type pulmonary function instrument.
Further improvement of the technical scheme is as follows: the venturi tube structure further comprises an outlet section connected with the tail end of the diffusion section, and the outlet section, the inlet section and the throat section are all straight round tubes.
Further improvement of the technical scheme is as follows: the mouthpiece and the differential pressure flow detection part are of an integral structure made of medical grade materials.
Compared with the prior art, the utility model has the following advantages and positive effects:
1. the utility model makes the mouthpiece part and the differential pressure flow detection part into an integrated structure, combines the venturi tube and the differential pressure pore plate, has simple structure, convenient use and lower manufacturing cost, and is suitable for disposable use;
2. The utility model adopts special structural design, the unique flow channel shrinkage and the uniform distribution of the central round hole and the surrounding round hole on the pressure difference pore plate can homogenize fluid, can lead the pressure difference generated after the fluid throttling to be more uniformly distributed on the wall surface, can obtain wider measuring range and is suitable for measurement under various breathing states; the measured pressure value reflects the average pressure difference value more accurately, and the calculated flow velocity and flow are more accurate;
3. The utility model adopts a symmetrical design structure, and can realize bidirectional fluid flow monitoring;
4. The utility model is convenient to be detachably connected with a differential pressure type pulmonary function instrument and is used for measuring respiratory flow.
Drawings
FIG. 1 is a front view of a disposable breath flow detectable mouthpiece of the present utility model;
FIG. 2 is a left side view of a disposable breath flow detectable mouthpiece of the present utility model;
figure 3 is a schematic cross-sectional view along an axis of a disposable breath flow detectable mouthpiece of the present utility model.
The reference numerals in the figures are: 1. an outlet section; 2. a diffusion section; 3. a laryngeal inlet section; 4. a constriction section; 5. an entrance section; 6. a mouthpiece; 7. a buckle; 8. a first pressure taking pipe; 9. a second pressure taking pipe; 10. a differential pressure orifice plate; 11. a central circular hole; 12. surrounding the circular hole.
Detailed Description
The utility model is described in further detail below with reference to the attached drawing figures:
Referring to fig. 1-3, an embodiment of a disposable mouthpiece capable of detecting respiratory flow according to the present utility model includes a mouthpiece portion 6 and a differential pressure flow detecting portion, wherein the mouthpiece portion 6 is a hollow circular tube, and the differential pressure flow detecting portion includes a venturi tube structure, a differential pressure orifice plate 10 and a differential pressure collecting portion. The venturi structure comprises an inlet section 5, a constriction section 4 and a throat section 3 which are sequentially connected, a pressure difference pore plate 10 is arranged in the throat section 3 of the venturi structure, a mouthpiece 6 is connected with the inlet section 5 of the venturi structure, and the mouthpiece 6 and the pressure difference flow detection part are of an integrated structure.
Further, the pressure difference orifice plate 10 is a porous plate having a central circular hole 11 and a surrounding circular hole 12, and the pressure difference collecting part includes a first pressure taking port and a second pressure taking port on the side wall of the laryngeal section 3 at two sides of the pressure difference orifice plate 10.
Still further, the outlet end of the above-mentioned laryngeal section 3 is provided with a diffusion section 2, the contraction sections 4 at both ends of the laryngeal section 3 are symmetrically arranged with the diffusion section 2, the above-mentioned first pressure taking opening and the second pressure taking opening are symmetrically arranged on the side wall of the same side of the laryngeal section 3 by taking the pressure difference pore plate 10 as the symmetry center, and the first pressure taking opening and the second pressure taking opening are both positioned on the horizontal plane where the axis of the laryngeal section 3 is positioned for realizing the bidirectional fluid flow monitoring. The contraction taper angle of the contraction section 4 is the same as the diffusion taper angle of the diffusion section 2, and the lengths and pore sizes of both are identical.
Preferably, the pressure difference orifice plate 10 is a thin-walled circular plate with a thickness of 1-2mm, the periphery of the pressure difference orifice plate 10 is connected with the inner wall of the laryngeal section 3, and the diameter of the central circular hole 11 is larger than the diameter of the surrounding circular hole 12 around the central circular hole.
Still further, two buckles 7 used for being connected with the differential pressure type pulmonary function instrument are symmetrically arranged on the outer side wall of the laryngeal section 3, the first pressure taking port is connected with a first pressure taking pipe 9, the second pressure taking port is connected with a second pressure taking pipe 8, the first pressure taking pipe 9 and the second pressure taking pipe 8 penetrate through the same buckle 7 and are led out downwards, and the sensor interfaces of the differential pressure type pulmonary function instrument are in butt joint.
Furthermore, the venturi tube structure further comprises an outlet section 1 connected with the tail end of the diffusion section 2, and the outlet section 1, the inlet section 5 and the throat section 2 are all straight round tubes.
In actual manufacturing, the mouthpiece body 6 and the differential pressure flow detecting portion may be made of medical grade materials. The section of the mouthpiece 6 connected with the inlet section 5 is a straight circular tube, and the section of the mouthpiece 6 for oral cavity is a flat circular tube, so that oral cavity is convenient and air-tight.
It should be understood that the above description is not intended to limit the utility model to the particular embodiments disclosed, but to limit the utility model to such embodiments, variations, modifications, additions and substitutions are within the scope of the utility model.

Claims (10)

1. The disposable mouthpiece capable of detecting respiratory flow comprises a mouthpiece part and a differential pressure flow detection part, wherein the mouthpiece part is a hollow circular tube, the differential pressure flow detection part comprises a venturi tube structure, a differential pressure pore plate and a differential pressure acquisition part, and the venturi tube structure comprises an inlet section, a contraction section and a throat section which are sequentially connected.
2. The disposable mouthpiece of claim 1, wherein the pressure difference orifice plate is a perforated plate having a central circular aperture and surrounding circular apertures, and the pressure difference collecting portion includes a first pressure taking port and a second pressure taking port on the side walls of the laryngeal section on both sides of the pressure difference orifice plate.
3. The disposable mouthpiece of claim 2, wherein the outlet end of the laryngeal section is provided with a diffuser, the constriction sections at the two ends of the laryngeal section are symmetrically arranged with the diffuser, the first pressure taking port and the second pressure taking port are symmetrically arranged on the side wall of the same side of the laryngeal section with the pressure difference pore plate as a symmetry center, and the first pressure taking port and the second pressure taking port are both positioned on a horizontal plane where the axis of the laryngeal section is positioned for realizing bidirectional fluid flow monitoring.
4. A disposable mouthpiece for detecting respiratory flow according to claim 2 or claim 3, wherein the pressure differential orifice plate is a thin walled circular plate, the periphery of the pressure differential orifice plate being connected to the inner wall of the laryngeal section, the diameter of the central circular aperture being greater than the diameter of the surrounding circular aperture thereabout.
5. A disposable mouthpiece for detecting respiratory flow according to claim 2 or 3, wherein two buckles for connection with a differential pressure type pulmonary function instrument are symmetrically arranged on the outer side wall of the laryngeal opening section, the first pressure taking port is connected with a first pressure taking pipe, the second pressure taking port is connected with a second pressure taking pipe, and the first pressure taking pipe and the second pressure taking pipe pass through the same buckle and are led out downwards for butt joint of sensor interfaces of the differential pressure type pulmonary function instrument.
6. The disposable mouthpiece of claim 4, wherein two buckles for connection with a differential pressure type pulmonary function instrument are symmetrically arranged on the outer side wall of the laryngeal section, the first pressure taking port is connected with a first pressure taking tube, the second pressure taking port is connected with a second pressure taking tube, and the first pressure taking tube and the second pressure taking tube pass through the same buckle and are led out downwards for butt joint of sensor interfaces of the differential pressure type pulmonary function instrument.
7. The disposable, breath flow detectable mouthpiece of claim 3, wherein the venturi structure further comprises an outlet section connected to the distal end of the diffuser section, the outlet section, inlet section and throat section being straight round tubes.
8. A disposable mouthpiece for detecting respiratory flow according to any of claims 1-3, wherein the mouthpiece and the differential pressure flow detector are of unitary construction made of medical grade material.
9. The disposable breath flow detectable mouthpiece of claim 5, wherein the mouthpiece and the differential pressure flow detector are of unitary construction made of medical grade material.
10. The disposable, breath flow detectable mouthpiece of claim 7, wherein the mouthpiece and the differential pressure flow detector are of unitary construction made of medical grade material.
CN202322824334.8U 2023-10-20 2023-10-20 Disposable mouthpiece capable of detecting respiratory flow Active CN221750448U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202322824334.8U CN221750448U (en) 2023-10-20 2023-10-20 Disposable mouthpiece capable of detecting respiratory flow

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202322824334.8U CN221750448U (en) 2023-10-20 2023-10-20 Disposable mouthpiece capable of detecting respiratory flow

Publications (1)

Publication Number Publication Date
CN221750448U true CN221750448U (en) 2024-09-24

Family

ID=92798225

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202322824334.8U Active CN221750448U (en) 2023-10-20 2023-10-20 Disposable mouthpiece capable of detecting respiratory flow

Country Status (1)

Country Link
CN (1) CN221750448U (en)

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