CN111568473A

CN111568473A - Expiration sampling device with virus purification effect and equivalent detection method

Info

Publication number: CN111568473A
Application number: CN202010278400.4A
Authority: CN
Inventors: 张宪
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-10
Filing date: 2020-04-10
Publication date: 2020-08-25
Anticipated expiration: 2040-04-10
Also published as: CN111568473B

Abstract

The invention is suitable for the field of breath sampling devices with virus purification effects, and provides a breath sampling device with virus purification effects and an equivalent detection method. Wherein, there is expiration sampling device and the collection structure cooperation use of virus purification efficiency, include: the gas guide pipeline is provided with a sampling port and an exhaust port, the sampling port is used for receiving gas exhaled by a user, and the gas guide pipeline can accommodate the collecting structure and enable the collecting structure to be arranged between the sampling port and the exhaust port; the air flow structure is used for generating air flow flowing from the sampling port to the exhaust port in the air guide pipeline; the disinfection structure is arranged in the air guide pipeline, is positioned between the acquisition structure and the exhaust port and is used for sterilizing and disinfecting the gas flowing through. The breath sampling device with the virus purification effect can reduce the risk of infection to a person to be collected.

Description

Expiration sampling device with virus purification effect and equivalent detection method

Technical Field

The invention belongs to the technical field of breath sampling devices, and particularly relates to a breath sampling device with a virus purification effect and an equivalent detection method.

Background

The sampling and detection of the pharyngeal swab is one of important links for resisting the new coronary pneumonia, and is also a key technical support for accurate diagnosis or elimination of close contact persons and suspected patients. The pharynx comprises nasopharynx, oropharynx and laryngopharynx, the nasopharynx swab is used for transnasal sampling, and the oropharynx swab is used for oral sampling. Whether a nasopharyngeal swab or an oropharyngeal swab is adopted, the collector and the person to be collected adopt face-to-face standing positions, the person to be collected is easy to sneeze and the like during operation, and aerosol carrying viruses can be generated by mouth opening action or cough, so that the collector is dangerous.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides an expired air sampling device with virus purification effect and an equivalent detection method, which aim to reduce the infection risk of an acquirer.

An expired air sampling device with virus purification function, which is used in cooperation with a collection structure for adsorbing substances in expired air of a user, comprising:

the gas guide pipeline is provided with a sampling port and an exhaust port, the sampling port is used for receiving gas exhaled by a user, and the gas guide pipeline can accommodate the collecting structure and enable the collecting structure to be arranged between the sampling port and the exhaust port;

the air flow structure is used for generating air flow flowing from the sampling port to the exhaust port in the air guide pipeline;

the disinfection structure is arranged in the air guide pipeline, is positioned between the acquisition structure and the exhaust port and is used for sterilizing and disinfecting the gas flowing through.

Optionally, the disinfection structure includes an electric heating wire and a filling material filled in the air guide pipeline, the filling material is formed by mutually stacking a plurality of granular filling materials made of high-temperature-resistant materials, and a gap for air to pass through is reserved between the filling materials.

Optionally, the filler frit is made of glass or ceramic material.

Optionally, the filler particles are spherical particles.

Optionally, the air guide pipeline includes the collection pipeline section, disinfection pipeline section and the discharge pipeline section of connecting in order, the collection pipeline section is including being used for placing the support plate of collection structure and connection the support plate is used for covering the cover body of low human oral area, the cover body has the sampling mouth, the discharge pipeline section has the gas vent, the support plate perpendicular to the axial of collection pipeline section is seted up the gas passing hole that supplies gas to pass through, disinfection structure locates the disinfection pipeline section, airflow structure connects the discharge pipeline section.

Optionally, the airflow structure establishes including the cover the outer pipeline section in the air guide pipeline outside, be used for connecting outer pipeline section with shrouding and tailboard that air guide pipeline and interval set up, outer pipeline section the shrouding the tailboard with the air guide pipeline encloses to close and forms the air cavity, outer pipeline section is seted up and is supplied compressed air to get into the gas mouth that connects of air cavity, the tailboard is close to the gas vent has been seted up a plurality of supplies compressed air output in order that the gas outlet forms the gas transmission mouth of ordering about gas entering the negative pressure of air guide pipeline.

Optionally, the airflow structure further comprises a guide section connected to the outer tube section and extending away from the tail plate; the tail plate is in a horn shape converging to the exhaust port, and the air delivery ports are arranged in a penetrating mode along the plate thickness direction.

Optionally, the air chamber of the air flow structure is provided with a partition plate spirally arranged around the output section, and the partition plate divides the air chamber into a spiral air transmission channel communicated with the air receiving port and the air transmission port.

An equivalent detection method suitable for the breath sampling device with virus purification effect comprises the following steps:

the vinegar is close to the sampling port, and the sour taste is detected at the exhaust port;

after the gas exhaust port can smell the sour taste, the disinfection structure conducts high-temperature disinfection on the gas guide pipeline, and then the sour taste is detected again at the gas exhaust port.

The application provides a gas that expiration sampling device user expired that has virus purification efficiency flows through sample connection and gas vent under the driving of airflow structure, this gas is from the in-process of sample connection to gas vent, through the collection structure, make most germ in the gas, material such as virus are filtered by the collection structure and are adsorbed, then this gas is disinfected by the disinfection structure and kills, make most germ in this gas, virus be killed and reach the emission requirement, thereby greatly reduce and bring the risk of infecting by the person of gathering.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an breath sampling device with virus purification function according to an embodiment of the present disclosure;

FIG. 2 is a cross-sectional view of an breath sampling device with virus purification function according to an embodiment of the present application;

FIG. 3 is a schematic view of an airflow channel in an breath sampling device with virus purification function according to an embodiment of the present application;

FIG. 4 is a schematic view of a sterilization structure of an breath sampling apparatus with virus purification function according to an embodiment of the present application;

fig. 5 is a schematic diagram illustrating an airflow structure in an expiratory sampling device with virus purification function according to an embodiment of the disclosure.

Wherein, in the figures, the respective reference numerals:

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "upper," "lower," "inner," "outer," and the like, refer to an orientation or positional relationship based on that shown in the drawings for ease of description and simplicity of description, and do not indicate or imply that the structures or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the present application.

In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

Example one

As shown in fig. 1 to 5, the embodiment provides an expired air sampling device with virus purification function, which is used in cooperation with a collection structure for adsorbing substances in the expired air of a user. The collected substance can be aerosol containing new crown germs. In this embodiment, the collection structure is a filter element. The filter element is a molecular sieve and silica gel active physical adsorption drying agent. The adsorption of the filter element to the aerosol is physical adsorption. The filter element is embedded into the disposable medical grade plastic mask in a conical detachable way. The mask conforms to the design of human face modeling to ensure the fit of the mask and the human body, thereby preventing the air exhaled by the human body from escaping from the contact part of the mask and the human body to pollute the air.

The breath sampling device with virus purification function comprises an air duct 10, an air flow structure 20 and a disinfection structure 30.

The gas conduit 10 has a sampling port 101 and an exhaust port 102, the sampling port 101 being for receiving gas exhaled by the user, the gas conduit 10 being capable of receiving the collection structure and having the collection structure disposed between the sampling port 101 and the exhaust port 102.

The gas flow structure 20 is used to generate a gas flow in the gas conduit 10 from the sampling port 101 to the exhaust port 102, and the gas exhaled by the user flows with the gas flow from the sampling port 101 to the exhaust port 102.

The disinfecting structure 30 is disposed in the gas guide duct 10 between the collecting structure and the gas outlet 102, and is used for disinfecting and sterilizing the gas flowing through.

The breath sampling device with the virus purification effect provided by the embodiment is designed by utilizing the propagation characteristics of virus aerosol and virus discharged in the breath process of a new coronary pneumonia infected person aiming at the danger caused by face-to-face manual operation during sampling of a throat swab, and captures a virus strain sample from the lung breath of the collected person in a mechanical and physical mode so as to be used for further quantity culture of nucleic acid detection. After the collection structure (filter element) collects the aerosol in the exhaled air of the human body, the aerosol is transferred to a laboratory and is subjected to medical incremental culture to reach the virus quantity enough for nucleic acid detection, so that the speed of tracking and troubleshooting of new crown asymptomatic carriers is increased.

The gas that the user expired flows through sampling port 101 and gas vent 102 under the driving of airflow structure 20, and this gas is from sampling port 101 to the in-process of gas vent 102, through collection structure for aerosol in the gas is filtered by collection structure and is adsorbed, and then this gas is disinfected by disinfection structure 30, makes most germ, the virus in this gas be disinfected and kill and reach the emission requirement, thereby greatly reduces and brings the risk of infecting to the person of being gathered.

Referring to fig. 2, the air guide duct 10 includes a collecting duct section 11, a sterilizing duct section 12 and a discharging duct section 13 connected in sequence, a sampling port 101 is provided in the collecting duct section 11, an exhaust port 102 is provided in the discharging duct section, a sterilizing structure 30 is provided in the sterilizing duct section 12, and an air flow structure 20 is connected to the discharging duct section 13.

The airflow structure 20 includes an outer pipe section 21 sleeved outside the air guide duct 10, a sealing plate 22 and a tail plate 23 for connecting the outer pipe section 21 and the air guide duct 10 (the discharge pipe section 13) and arranged at an interval, the outer pipe section 21, the sealing plate 22, the tail plate 23 and the discharge pipe section 13 enclose to form an air cavity 203, the outer pipe section 21 is provided with an air receiving port 201 for compressed air to enter the air cavity 203, and the tail plate 23 is close to the air outlet 102 and provided with a plurality of negative pressures for compressed air to be output so as to drive air to enter the air guide duct 10 at the air outlet 102.

The airflow structure 20 generates negative pressure at the sampling port 101, so that the gas exhaled by the human body can be smoothly collected by the filter element from the sampling port 101 of the gas guide duct 10 and then discharged through the exhaust port 102. In addition, the negative pressure generated by the airflow structure 20 at the sampling port 101 can help the human body to exhale the gas more sufficiently.

Referring to fig. 2 and 3, the exhaled air of the human body enters the air guide duct 10 through the sampling port 101 and is discharged through the exhaust port 102, and the moving path of the exhaled air of the human body is shown in S1. In this process, the air inlet 201 of the air flow structure 20 receives compressed air, and the compressed air passes through the air chamber 203 and is discharged from the air delivery port 202, and the moving path of the compressed air is shown in S2. According to the bernoulli principle, the compressed air forms a pressure less than atmospheric pressure at the exhaust port 102 due to its high velocity movement when discharged at the air delivery port 202, thereby creating a negative pressure that forces the exhaled air of the human body into the air guide channel 10.

Compressed air is input from the air pump connecting air inlet 201. On one hand, the negative pressure generated at the exhaust port 102 by the compressed air output by the air pump through the air flow structure 20 is far less than the negative pressure generated by a general air pump, so that the damage to the mouth of the human body due to too large negative pressure at the exhaust port 102 can be avoided; on the other hand, the gas exhaled by the human body only passes through the air guide duct 10 and does not pass through the air pump or other devices, so that no pollution (moisture, virus, etc.) is generated to other devices, and in addition, the gas exhaled by the human body only passes through the air guide duct 10, so that the air guide duct 10 only needs to be cleaned during cleaning.

In another embodiment of the present application, referring to fig. 2, the collecting tube 11 includes a carrier plate 111 for placing the collecting structure and a cover 112 connected to the carrier plate 111 for covering the mouth of the human body, the cover 112 has a sampling port 101, and the carrier plate 111 is perpendicular to the axial direction of the collecting tube 11 and is provided with a gas passing hole for passing gas. That is, the disposable medical mask can be replaced with the mask body 112 and the carrier plate 111 by those skilled in the art. Other configurations are possible for those skilled in the art, as long as they cover the mouth of the person to collect exhaled air.

When the breath sampling device with the virus purification function is used, the collection structure (filter element) is placed on the support plate 111, then the cover body 112 is covered on the mouth of a human body, a person to be collected exhales gas into the cover body 112, and the gas is filtered by the filter element, enters the air guide pipeline 10 through the air hole, is sterilized and is discharged from the air outlet 102. The collection person as long as provide gather structure (filter core) and in time change gather structure (filter core) can, need not with by the person direct contact of gathering to further reduce the risk of being infected.

In another embodiment of the present application, the housing 112 is flared to facilitate directing exhaled air from the person to converge toward the filter element.

In this embodiment, the disinfection structure 30 can be an ultraviolet disinfection structure, an infrared disinfection structure, a high-voltage pulse disinfection structure, a photocatalyst catalytic disinfection structure, and the like.

In another embodiment of the present application, referring to fig. 4, the sterilizing structure 30 includes an electric heating wire 31 and a filling material 32 filled in the air guide duct 10, wherein the filling material 32 is formed by stacking a plurality of granular filling materials made of high temperature resistant material, and a gap for air to pass through is reserved between the filling materials.

The heating wire 31 is disposed within the length of sterilization tube 12 and is connected to a power source and controller by conductive rods or wires passing through the length of sterilization tube 12.

The surface temperature of the existing heating wire 31 can reach more than 1150 ℃ when in use, and the active living environment of the new coronavirus can not exceed 60 ℃, so that the heating wire 31 is applicable to providing a high-temperature environment in the disinfection pipe section 12 to kill the virus. Compared with other disinfection modes, the mode of heating and disinfecting by the heating wire 31 can effectively reduce the equipment cost.

The filling material 32 is arranged to create a barrier to the gas and change the direction of the gas flow. The filling materials 32 are stacked and filled in the sterilizing section 13 by granular filling materials, and the gas exhaled by the human body touches the filling materials 32 after entering the sterilizing section 13 and passes through the gaps among the filling materials 32 to generate a turbulence effect, so that the length of other flowing paths in the sterilizing section 13 is prolonged, the collision frequency of the gas colliding with the heating wires and the filling materials 32 is increased, and the sterilizing effect is enhanced. In addition, the filling material 32 can fix the heating wire, so that the heating wire 31 does not need to be additionally provided with a fixing device, and the effect of simplifying the structure is achieved.

Those skilled in the art will appreciate that the disinfection tube 12 is made of a high temperature resistant material to ensure that its basic support function is achieved in a high temperature environment. It will be appreciated by those skilled in the art that the sides of the length of sterilized tube 12 are provided with barriers, preferably a mesh structure, that prevent the filler material 32 from leaving the length of sterilized tube 12 but not obstructing the flow of gas.

In another embodiment of the present application, the filler frit is made of glass or ceramic material. The glass or ceramic material has good high temperature resistance and low material cost.

In another embodiment of the present application, the filler particles are spherical particles. Spherical particles of equal diameter are preferred. This design ensures that the filler material 32 fills the length 12 of sterilized tubing with a void for gas to flow through. The diameter of the filler particles can be set by those skilled in the art according to actual needs, and is not limited herein.

In another embodiment of the present application, the tube diameter of the disinfection tube segment 12 is larger than the tube diameter of the collection tube segment 11 and larger than the tube diameter of the discharge tube segment 13. When the gas enters the large-caliber disinfection pipe section 12 from the small-caliber collecting pipe section 11, the gas flow speed is reduced, so that the retention time of the gas in the disinfection pipe section 12 is prolonged, namely, the time for heating and sterilizing the gas is prolonged, and the improvement of the sterilization effect is facilitated. Similarly, the diameter of the discharge pipe section 13 is smaller than that of the disinfection pipe section 12, so that the outflow of gas is delayed to a certain extent, and the time for thermal sterilization is increased.

In another embodiment of the present application, referring to fig. 3, the airflow structure 20 further includes a guiding segment 24 connected to the outer tube segment 21 and extending away from the tail plate 23.

The guide section 24 guides the compressed air outputted through the air transfer port 202, defines a flow passage of the compressed air, and prevents air outside the passage from being mixed into the passage area to block the movement of the compressed air. That is, the guide section 24 is provided to reduce the moving resistance of the compressed air after leaving the air delivery port 202. In other words, the addition of the guide segment 24 can increase the moving speed of the compressed air after leaving the air delivery port 202 to facilitate the formation of negative pressure.

In another embodiment of the present application, referring to fig. 3, the tail plate 23 defines a plurality of air inlets 202, and the tail plate 23 is in a horn shape converging toward the air outlet 102. The gas transfer ports 202 penetrate in the plate thickness direction, a plurality of the gas transfer ports 202 are provided along the peripheral side of the exhaust port 102, and the opening directions of the gas transfer ports 202 are collected at the extension of the exhaust port 102. This arrangement causes the compressed air to flow out through the transfer port 202 to swirl at the exhaust port 102. And the exhaust port 102 is positioned at the center of the vortex to further increase the generation of negative pressure and increase the suction force to the gas exhaled from the human body.

In another embodiment of the present application, referring to fig. 5, the air flow structure 20 is provided with a partition 25 spirally disposed around the discharge pipe section 13 in the air chamber 203, and the partition 25 divides the air chamber 203 into spiral air transmission channels communicated with the air receiving opening 201 and the air transmission opening 202. This arrangement can further increase the flow rate at which the compressed air forms a gas vortex at the exhaust port 102, thereby further increasing the suction force on the gas exhaled by the human body.

Example two

The embodiment provides an equivalent detection method for testing the sterilization effect of the breath sampling device with the virus purification effect in the first embodiment. Please refer to the first embodiment for the structure of the breath sampling device with virus purification function.

The equivalent detection method comprises the following steps:

step 1: vinegar is close to the sampling port 101, and sour taste is detected at the exhaust port 102;

step 2: after the exhaust port 102 is smelled of the sour taste, the sterilization structure 30 performs high-temperature sterilization of the air guide duct 10, and then detects the sour taste at the exhaust port 102.

In order to test the safety of personnel, the disinfection effect of the device on aerosol with viruses cannot be directly tested. Therefore, an equivalent test method needs to be sought.

The critical temperature for the decomposition of acetic acid aerosol molecules is 440 ℃, the living environment of the new coronavirus is not over 60 ℃, and the virus is killed instantly at the high temperature of 440 ℃. Then, if acetic acid can be decomposed through the gas conduit 10 of the apparatus, it indicates that the apparatus has the capability of killing viruses. Therefore, whether acetic acid can be decomposed by the apparatus is taken as an equivalent test means for verifying that the apparatus has a sterilizing ability.

It is also stated that sensory identification can be one of the indicators of food quality standards and hygiene standards. The food should be nontoxic and harmless, meet the nutritional requirements, and have corresponding color, flavor and taste. The sensory identification can not only directly find the abnormal phenomenon of the food sensory property on the macroscopic scale, but also can be very sensitively perceived when the food sensory property is changed on the microscopic scale. Therefore, the sensory quality identification of the food has the advantages that physicochemical and microbiological detection methods cannot replace the methods. In the quality standard and the health standard of the food, the first content is generally sensory indexes, so that the rationality and the scientificity exist in identifying the sensory properties of the food through the senses. The sense of smell is an important part in sensory identification, the sense of smell is participated in by the olfactory nervous system and the nasal trigeminal nervous system, and when the olfactory receptor receives external smell molecules, a series of enzyme cascade reactions can be initiated to realize conduction. Therefore, it is possible to detect sourness by using smell.

In step 1, if the exhaust port 102 is sour, it indicates that the gas guide duct 10 and the gas flow structure 20 are not blocked or otherwise abnormal, so that the gas at the sampling port 101 can be driven to the exhaust port 102.

In step 2, if the sour taste is not heard in the vent 102, it means that the acetic acid is decomposed at high temperature. Thus illustrating that the device is able to draw virus-laden gas into the airway 10 and be destroyed. Since the slight sour taste can be detected by the sensitivity of human olfaction, when the sour taste is not smelled, it can be basically said that the acetic acid is completely decomposed. If the smell is sour, it is indicated that technical parameters affecting the sterilization effect (power of the heating wire 31, power of the air pump, length of the sterilizing tube section 12 of the air guide duct 10, etc.) are not yet matched, or that there is a malfunction of the sterilizing structure 30. In conclusion, the equivalent detection method provided by the embodiment can be used for detecting the sterilization effect of the exhaled air collecting device, and is simple and convenient to operate.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents or improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides an expiration sampling device that has virus purification efficiency, uses with collection structure cooperation, collection structure is arranged in adsorbing the material in the user's expired gas, its characterized in that includes:

2. The breath sampling device with virus purification effect according to claim 1, wherein the sterilizing structure comprises an electric heating wire and a filling material filled in the air duct, the filling material is formed by stacking a plurality of granular filling materials made of high temperature resistant materials, and a gap for gas to pass through is reserved between the filling materials.

3. The breath sampling device with viral purification efficacy of claim 2, wherein said filler frit is made of glass or ceramic material.

4. The breath sampling device with viral purification effect of claim 2, wherein said filler particles are spherical particles.

5. The breath sampling device with virus purification effect as claimed in claim 1, wherein said gas guiding tube comprises a collecting tube section, a disinfecting tube section and a discharging tube section connected in sequence, said collecting tube section comprises a carrier plate for placing said collecting structure and a cover body connected to said carrier plate and used for covering the mouth of the human body, said cover body has said sampling port, said discharging tube section has said gas outlet, said carrier plate is perpendicular to the axial direction of said collecting tube section and is provided with a gas passing hole for gas to pass through, said disinfecting structure is provided in said disinfecting tube section, and said gas flow structure is connected to said discharging tube section.

6. The breath sampling device with virus purification effect as claimed in any one of claims 1 to 5, wherein said airflow structure comprises an outer tube section sleeved outside said air guide duct, a sealing plate and a tail plate for connecting said outer tube section and said air guide duct and arranged at an interval, said outer tube section, said sealing plate, said tail plate and said air guide duct enclose to form an air cavity, said outer tube section is provided with an air inlet for compressed air to enter said air cavity, said tail plate is close to said air outlet and provided with a plurality of air inlets for compressed air to output to form a negative pressure at said air outlet for driving air to enter said air guide duct.

7. The breath sampling device with viral purification efficacy according to claim 6, wherein said gas flow structure further comprises a guide segment connecting said outer tube segment and extending away from said tail plate; the tail plate is in a horn shape converging to the exhaust port, and the air delivery ports are arranged in a penetrating mode along the plate thickness direction.

8. The breath sampling device with virus purification effect of claim 6, wherein said air flow structure is provided with a partition plate spirally disposed around said output section in said air chamber, and said partition plate divides said air chamber to form a spiral air delivery channel communicating with said air receiving opening and said air delivery opening.

9. An equivalent detection method applied to the breath sampling device with virus purification effect according to any one of claims 1 to 8, comprising:

after the exhaust port can smell the sour taste, the disinfection structure conducts high-temperature disinfection on the air guide pipeline, and then the sour taste is detected again at the exhaust port.