CN219183745U

CN219183745U - Disposable air leakage-proof respiratory filter

Info

Publication number: CN219183745U
Application number: CN202221930106.8U
Authority: CN
Inventors: 韦素兰; 金美玲; 赵振; 焦道振; 陈淑靖; 宋元林
Original assignee: Shanghai Express Optical Technology Co ltd
Current assignee: Shanghai Express Optical Technology Co ltd
Priority date: 2022-07-25
Filing date: 2022-07-25
Publication date: 2023-06-16
Anticipated expiration: 2032-07-25

Abstract

The utility model discloses a disposable leak-proof breathing filter, which comprises an instrument connecting pipe, wherein one end of the instrument connecting pipe is connected with a lung function instrument, the other end of the instrument connecting pipe is connected with one end of a filter shell, a filtering membrane is arranged in the filter shell, the other end of the filter shell is connected with one end of a seaming connecting pipe, the other end of the seaming connecting pipe is connected with one end of a seaming pipe, a mask which only covers the mouth of a patient is arranged on the seaming connecting pipe in a penetrating way, the seaming connecting pipe is in sealing connection with the mask, and a side hole is arranged on the side surface of the seaming pipe; the two sides of the mask are respectively provided with a headband; the filter shell comprises a filter rear shell and a filter front shell, the filter membrane is fixed between the filter rear shell and the filter front shell, and the section of the filter front shell is of an arc-shaped structure protruding towards one side of the seaming connecting pipe. The arc structure of the filter can increase the effective filtering area, and the pressure of the gas passing through the filtering membrane is more uniform, so that the filtering effect is better; solves the problems of air leakage of the mouth and/or blockage of the mouth of the patient.

Description

Disposable air leakage-proof respiratory filter

Technical Field

The utility model relates to a disposable air leakage prevention type respiratory filter, and belongs to the technical field of medical products.

Background

In the lung function examination, in order to reduce the cross infection between doctors and patients and the pollution to the surrounding environment, a disposable breathing filter is required to be arranged at the instrument end, so that the droplets and microorganisms possibly contained in the exhaled air of the patient can be effectively filtered. During detection, a patient needs to open a mouth, bite the front end of the filter, and the mouth needs to be closed for inhalation and exhalation. In clinical work, patients who often encounter facial paralysis, rabbit lips, poliomyelitis and the like and cannot close their mouths need to detect lung functions to diagnose diseases, and the patients are also often accompanied by uncontrollable tongues. Often, because of air leakage from the mouth and blockage of the tongue, inspection or quality control criteria cannot be achieved. Patients whose mouth cannot be closed, leak gas during inspiration and expiration, often resulting in failure of detection or reduced levels of true lung capacity; patients whose tongue is uncontrollable often have a tongue that extends into the filter bite, blocking the bite channel, resulting in failure of the test. The existing filter seaming is cylindrical, lips are not attached to the seaming, and the corners of the mouth of a patient are prone to air leakage, so that detection fails or the real lung capacity level of the patient is reduced.

Disclosure of Invention

The utility model aims to solve the technical problems that: how to improve the success rate of lung function examination of patients with uncontrollable mouth and tongue, or to reach the real lung capacity level as much as possible; and how to improve the filtering effect of the respiratory filter.

In order to solve the technical problems, the technical scheme of the utility model is to provide a disposable air leakage prevention type breathing filter, which comprises an instrument connecting pipe, wherein one end of the instrument connecting pipe is connected with a lung function instrument, the other end of the instrument connecting pipe is connected with one end of a filter shell, a filtering membrane is arranged in the filter shell, the other end of the filter shell is connected with one end of a seaming connecting pipe, and the other end of the seaming connecting pipe is connected with one end of the seaming pipe; the two sides of the mask are respectively provided with a headband; the mask is of an airtight structure; when the head belt is fixed on the head of a patient, the mask completely covers the mouth of the patient; the filter shell comprises a filter rear shell and a filter front shell, the filter membrane is fixed between the filter rear shell and the filter front shell, one end of the filter rear shell is in sealing connection with one end of the filter front shell, the other end of the filter rear shell is in sealing connection with the other end of the instrument connecting pipe, the other end of the filter front shell is in sealing connection with one end of the seaming connecting pipe, and the section of the filter front shell is of an arc-shaped structure protruding towards one side of the seaming connecting pipe.

Preferably, the seaming tube is of a flat structure; the other end of the seaming tube is connected with a tongue-and-groove piece which is arranged on one side wall of the seaming tube; the shape of the tongue-and-groove piece is matched with the shape of the side wall of the seaming pipe.

Preferably, the mask is protruded to one side of the filter housing.

Preferably, the cross section of the front shell of the filter is of a semicircular arc structure or a semi-elliptic structure.

According to the respiratory filter, the silica gel mask on the seaming connecting pipe tightly wraps the mouth of a patient, the two head bands on the mask are worn on the head, tightness can be adjusted, air leakage is prevented, meanwhile, the tongue is pressed below the seaming by the tongue pressing piece at the front end of the seaming pipe, the tongue of the patient can be effectively prevented from blocking the seaming of the filter, detection accuracy is guaranteed, and clinical success rate is improved.

The arc-shaped structure of the front shell of the filter can increase the effective filtering area, the pressure of the gas passing through the filtering membrane is more uniform, and the spray and microorganisms possibly contained in the exhaled air of a patient can be effectively filtered, so that the filtering effect is better; the mouth-biting tube at the patient end of the filter solves the problems of air leakage of the mouth of the patient and/or blocking of the mouth biting of the tongue, helps patients with facial paralysis, rabbit lips, poliomyelitis and the like who cannot close the mouth and/or cannot control the tongue to finish lung function detection, and clinically diagnoses diseases. The filter provided by the utility model has the advantages of simple design, convenience in use, improvement of comfort level of patients, improvement of success rate of clinical detection and guarantee of detection accuracy.

Drawings

FIG. 1 is a front view of a disposable leak-proof respiratory filter;

FIG. 2 is a perspective view of a disposable leak-proof respiratory filter;

fig. 3 is a schematic view of the internal structure of the filter housing.

Detailed Description

In order to make the utility model more comprehensible, preferred embodiments accompanied with figures are described in detail below.

The utility model provides a disposable anti-leakage breathing filter, as shown in figures 1, 2 and 3, comprising an instrument connecting pipe 1, wherein one end of the instrument connecting pipe is connected with a lung function instrument, the other end of the instrument connecting pipe 1 is connected with one end of a filter shell, a filter membrane 10 is arranged in the filter shell, the other end of the filter shell is connected with one end of a seaming connecting pipe 4, the other end of the seaming connecting pipe 4 is connected with one end of a seaming pipe 9, a mask 5 which only covers the mouth of a patient is arranged on the seaming connecting pipe 4 in a penetrating way, the seaming connecting pipe 4 is in sealing connection with the mask 5, and a side hole 8 is arranged on the side surface of the seaming pipe 9; the two sides of the mask 5 are respectively provided with a headband 6; the mask 5 is of an airtight structure; the mask 5 is concave toward one side of the seaming tube 9. The mask 5 completely covers the patient's mouth when the headband 6 is secured to the patient's head. The seaming pipe 9 is of a flat structure; the other end of the seaming tube 9 is connected with a tongue-and-groove piece 7, and the tongue-and-groove piece 7 is arranged on one side wall of the seaming tube 9; the shape of the tongue-and-groove piece 7 matches the shape of the side wall of the seaming tube 9. Teeth marks for the occlusion of a patient are uniformly distributed on the seaming tube 9.

The filter shell comprises a filter rear shell 2 and a filter front shell 3, a filter membrane 10 is fixed between the filter rear shell 2 and the filter front shell 3, one end of the filter rear shell 2 is in sealing connection with one end of the filter front shell 3, the other end of the filter rear shell 2 is in sealing connection with the other end of the instrument connecting pipe 1, the other end of the filter front shell 3 is in sealing connection with one end of the seaming connecting pipe 4, the section of the filter front shell 3 is of an arc-shaped structure protruding towards one side of the seaming connecting pipe 4, namely the filter front shell 3 is of a bowl-shaped structure. A filter membrane fixing frame 11 is fixed on the inner wall around the filter rear shell 2 and the filter front shell 3, and the periphery of the filter membrane 10 is fixed on the filter membrane fixing frame 11. The cross section of the front casing 3 of the filter can be in a semicircular arc structure or a semicircular elliptic structure, or other arc structures with uniform and smooth transition inner walls.

In this embodiment, two opposite sides of the side of the seaming tube 9 are respectively provided with a side hole 8. The cross section of the filter front shell 3 is of a semicircular arc structure.

The mask 5 is made of flexible silica gel, so that the mouth can be tightly wrapped; the tightness of the two head bands 6 can be adjusted to prevent air leakage; the mask 5 protrudes to one side of the filter housing, and the side holes 8 on both sides of the seaming tube 9 are all communicated with the through cavity in the middle of the seaming tube 9.

The utility model relates to a respiratory filter used for a patient with facial paralysis, rabbit lips, poliomyelitis and the like, whose mouth cannot be closed and whose tongue cannot be controlled, to check lung function.

The application process of the utility model is as follows:

when a subject (i.e. a patient) performs lung function examination, the mouth is opened, the seaming tube 9 on the breathing filter of the utility model is connected with the tongue pressing piece 7 to extend into the mouth of the patient, the tongue pressing piece 7 is pressed on the tongue of the patient, the patient bites the seaming tube 9, and meanwhile, the two head bands 6 are sleeved on the head of the patient, so that the mouth is tightly packed by the mask 5, and finally, the lung function examination is performed on the patient through the breathing filter.

Since the mouthpiece 9 is provided with teeth marks, the patient bites on the mouthpiece 9, and the mouthpiece 9 is prevented from sliding in the patient's mouth. Since the tongue-pressing piece 7 presses against the tongue of the patient, the tongue of the patient is prevented from extending into the mouthpiece 9, thereby blocking the bite.

The gas exhaled by the patient can be directly exhaled through the passage in the mouthpiece 9; meanwhile, the gas leaked from the mouth corners of the patient with the mouth corners incapable of being closed is blocked by the mask 5, and enters the inner cavity channel in the seaming tube 9 through the side holes 8 to exhale the gas, so that the problem of gas leakage is reduced or avoided as much as possible.

Even if the patient's tongue is uncontrolled, when the tongue would block the port of the mouthpiece 9, the exhaled air from the patient can enter the lumen passage in the mouthpiece 9 through the side hole 8 to exhale. The success rate of the detection is improved and the probability of the patient reaching the true lung capacity level is improved.

In addition, due to the arc-shaped structure of the front shell of the filter, the contact area of the gas from the seaming pipe 9 and the filter membrane 10 can be increased, so that the effective filter area is increased, the pressure of the gas passing through the filter membrane 10 is more uniform, and the possible droplets and microorganisms in the exhaled gas of a patient can be effectively filtered, so that the filtering effect is better.

Claims

1. The disposable leak-proof breathing filter comprises an instrument connecting pipe (1) with one end connected with a lung function instrument, wherein the other end of the instrument connecting pipe (1) is connected with one end of a filter shell, a filter membrane (10) is arranged in the filter shell, the other end of the filter shell is connected with one end of a seaming connecting pipe (4), and the other end of the seaming connecting pipe (4) is connected with one end of a seaming pipe (9), and the disposable leak-proof breathing filter is characterized in that a mask (5) which only covers the mouth of a patient is worn on the seaming connecting pipe (4), the seaming connecting pipe (4) is in sealing connection with the mask (5), and a side hole (8) is arranged on the side surface of the seaming pipe (9); the two sides of the mask (5) are respectively provided with a headband (6); the mask (5) is of an airtight structure; when the headband (6) is fixed on the head of a patient, the mask (5) completely covers the mouth of the patient; the filter shell comprises a filter rear shell (2) and a filter front shell (3), a filter membrane (10) is fixed between the filter rear shell (2) and the filter front shell (3), one end of the filter rear shell (2) is in sealing connection with one end of the filter front shell (3), the other end of the filter rear shell (2) is in sealing connection with the other end of the instrument connecting pipe (1), the other end of the filter front shell (3) is in sealing connection with one end of the seaming connecting pipe (4), and the section of the filter front shell (3) is of an arc-shaped structure protruding towards one side of the seaming connecting pipe (4).

2. The disposable leak-proof respiratory filter as defined in claim 1, wherein the mouthpiece (9) is of a flat configuration; the other end of the seaming tube (9) is connected with a pressing tongue piece (7), and the pressing tongue piece (7) is arranged on one side wall of the seaming tube (9); the shape of the tongue-and-groove piece (7) is matched with the shape of the side wall of the seaming pipe (9).

3. The disposable, leak-proof respiratory filter according to claim 1, wherein the mask (5) protrudes to one side of the filter housing.

4. Disposable leak-proof breathing filter according to claim 1, characterized in that the cross section of the filter front housing (3) is of semi-circular or semi-elliptical configuration.