CN111436974A

CN111436974A - Device and method for collecting respiratory tract gas

Info

Publication number: CN111436974A
Application number: CN202010398570.6A
Authority: CN
Inventors: 李为为; 李莉; 殷中奇
Original assignee: Lingyin Biotechnology Shanghai Co ltd; Jiangsu Yimi Biotechnology Co ltd
Current assignee: Lingyin Biotechnology Shanghai Co ltd; Jiangsu Yimi Biotechnology Co ltd
Priority date: 2020-05-12
Filing date: 2020-05-12
Publication date: 2020-07-24

Abstract

A device and a method for collecting respiratory tract gas relate to the technical field of medical appliances; the device for collecting respiratory tract gas comprises a breathing mask and a collecting and collecting device; the inner surface of the respirator is capable of condensing exhaled breath into condensate; the respiratory mask is communicated with the collecting and collecting device, and the collecting and collecting device is used for collecting condensate collected by the respiratory mask. The method of collecting respiratory gases employs a device for collecting respiratory gases. The invention aims to provide a device and a method for collecting respiratory tract gas, which solve the technical problems of low virus collection capacity, environmental aerosol pollution and medical staff infection caused by collection and high-intensity workload caused by medical staff in the prior art to a certain extent.

Description

Device and method for collecting respiratory tract gas

Technical Field

The invention relates to the technical field of medical instruments, in particular to a device and a method for collecting respiratory tract gas.

Background

Respiratory diseases are usually collected by using a nasopharyngeal swab or an oropharyngeal swab, for example, a coronavirus sample can be collected by using the nasopharyngeal swab or the oropharyngeal swab, but because the virus needs to have sufficient concentration to be collected and tested, in actual operation, the problem of false negative caused by too low virus load collected by the nasopharyngeal swab or the oropharyngeal swab is often encountered.

In addition, the respiratory disease collecting device is used for collecting samples of highly infectious diseases, such as coronavirus, and is high-risk operation for environment and medical care personnel, and gas exhaled by a suspected case may contain a high-concentration virus sample, so that aerosol pollution is easily caused to the environment, and the exposure risk of the medical care personnel is increased; meanwhile, a large number of samples need professional medical care personnel to collect, and high-strength workload is caused for the medical care personnel.

Disclosure of Invention

The invention aims to provide a device and a method for collecting respiratory tract gas, which solve the technical problems of low virus collection capacity, environmental aerosol pollution and medical staff infection caused by collection and high-intensity workload caused by medical staff in the prior art to a certain extent.

In order to achieve the purpose, the invention provides the following technical scheme:

a device for collecting respiratory tract gas comprises a breathing mask and a collecting and collecting device;

the inner surface of the respirator is capable of condensing exhaled breath into condensate;

the respiratory mask is communicated with the collecting and collecting device, and the collecting and collecting device is used for collecting condensate collected by the respiratory mask.

In any of the above technical solutions, optionally, all or part of the inner surface of the breathing mask is provided with a hydrophobic membrane, and the hydrophobic membrane can condense exhaled breath into condensate.

In any of the above solutions, optionally, the collection and collection device includes a collection cover and a collection tube with an open top;

the collecting cover can be hermetically covered on the top opening of the collecting pipe;

the breathing mask can be in sealing connection with the top opening of the collecting tube.

In any of the above technical solutions, optionally, the collecting and collecting device includes a flow guide tube capable of connecting the respiratory mask and the collecting tube;

a blocking structure with a blocking through hole is arranged in the collecting pipe; the collecting pipe is divided into a first collecting cavity and a second collecting cavity by the blocking structure;

the flow guide pipe comprises a flow guide opening end and a flow guide socket end which correspond to each other; the flow guide opening end can be connected with the breathing mask;

the flow guide socket end is provided with a flow guide hole;

the flow guide socket end can be inserted into the top opening of the collecting pipe and inserted into the blocking through hole, so that the first collecting cavity and the second collecting cavity which are communicated with each other are sealed and isolated.

In any of the above technical solutions, optionally, the blocking structure is a blocking step; the blocking step is integrated in the collecting pipe;

or, the plugging structure is a plugging sealing ring.

In any of the above technical solutions, optionally, the top end of the collecting pipe is connected to a position of the flow guide pipe close to the flow guide socket end;

the top end of the collecting pipe is connected with the flow guide pipe in a threaded connection mode, an inserting connection mode or a buckling connection mode.

In any of the above technical solutions, optionally, the diameter of the blocking through hole near the top opening of the collecting pipe is larger than the diameter of the blocking through hole far from the top opening of the collecting pipe;

the flow guide socket end is matched with the aperture of the plugging through hole;

when the flow guide socket end is inserted into the plugging through hole, the lowest part of the flow guide hole is higher than the lowest part of the plugging structure; the lowest position of the diversion hole and the lowest position of the blocking structure are both one ends far away from the opening at the top of the collecting pipe.

In any of the above technical solutions, optionally, the diversion socket end is stepped, or the diversion socket end is conical;

a bulge is arranged inside the bottom of the diversion socket end and protrudes towards the diversion opening end;

the diversion hole is polygonal or circular, and the diversion hole is arranged on the side wall of the diversion socket end.

In any of the above technical solutions, optionally, the collecting pipe is provided with a limiting structure for limiting the insertion and movement of the flow guide pipe along the collecting pipe;

and/or the guide pipe is provided with a limiting structure for limiting the guide pipe to move along the collection pipe in an inserting manner.

In any of the above technical solutions, optionally, the collecting and collecting device includes a storage tube; the preservation tube is filled with preservation solution.

In any of the above technical solutions, optionally, the respiratory mask is communicated with the collecting and collecting device through a connecting pipe, wherein the connecting pipe is L type or linear;

the breathing mask and the connecting pipe are connected in a threaded connection, a plug-in connection or a buckle connection;

the collecting and collecting device is connected with the connecting pipe in a threaded connection mode, an inserting connection mode or a buckling connection mode.

In any of the above technical solutions, optionally, the hydrophobic membrane adopts a low-temperature condensation technology;

and/or the hydrophobic membrane is a hydrophobic membrane layer or a hydrophobic coating.

In any of the above technical solutions, optionally, an output unidirectional structure for causing the medium to flow into the collecting and collecting device in a unidirectional manner is provided at an output end of the breathing mask;

an air inlet and outlet structure is arranged on the breathing mask;

the shape of the input end of the breathing mask is a streamline shape which is attached to the face of a human body;

and a mask support is arranged on the input end of the breathing mask.

A method of collecting respiratory tract gases employs a device for collecting respiratory tract gases; the method comprises the following steps:

the breathing mask condenses the exhaled breath into a condensate;

the condensate flows to a first collecting cavity of the collecting pipe along the guide pipe;

taking down the guide pipe, wherein the condensate flows through the blocking structure from the first collection cavity and flows to the second collection cavity; wherein, the second collection cavity is pre-stored with preservation solution;

and sealing and covering the top opening of the collecting pipe by adopting the collecting cover to finish sampling.

A method for collecting respiratory tract gas comprises collecting respiratory tract gas; the method comprises the following steps:

the breathing mask condenses the exhaled breath into a condensate;

the condensate flows to the collection pipe;

opening the preservation pipe, and pouring the preservation solution in the preservation pipe into the collection pipe;

In any of the above solutions, optionally, before the exhaled breath is condensed into the condensate by the breathing mask, the breathing mask is stored at a low temperature.

The invention has the following beneficial effects:

the invention provides a device and a method for collecting respiratory tract gas, wherein expired gas can be condensed into condensate through the inner surface of a breathing mask, so that the condensate flows into a collecting device for collection; when a sample is collected, a patient or suspected case waits for a sampling person to wear a breathing mask, exhaled breath of the sampling person meets the inner surface of the breathing mask and is condensed into condensate, and then the condensate flows into a collecting device to finish collection when a certain amount of condensate is reached; the device for collecting respiratory tract gas is adopted for sampling, the virus load capacity is far higher than that of the nasopharyngeal swab and oropharyngeal swab samples, and the accuracy rate of virus detection can be effectively improved; the personnel to be sampled can collect the sample by themselves, thus greatly reducing the working intensity of the medical personnel; through respirator, greatly reduce or avoid treating that the expired air of sampling personnel causes aerosol pollution to the environment, reduced medical personnel's infection risk.

In order to make the aforementioned and other objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a perspective view of a first configuration of a device for collecting airway gases provided in accordance with an embodiment of the present invention;

FIG. 2 is a cross-sectional view of the device for collecting airway gas shown in FIG. 1;

FIG. 3 is an enlarged view of region A of the respiratory tract gas collection device of FIG. 2;

FIG. 4 is an exploded view of the device for collecting airway gas shown in FIG. 2;

FIG. 5 is a cross-sectional view of a variation of the device for collecting airway gas shown in FIG. 2;

FIG. 6 is a cross-sectional view of the collection tube of the device for collecting airway gas shown in FIG. 2;

FIG. 7 is a perspective view of a flow conduit of the device for collecting airway gas shown in FIG. 2;

FIG. 8 is a cross-sectional view of the draft tube shown in FIG. 7;

FIG. 9 is a cross-sectional view of a second configuration of a device for collecting airway gas provided in accordance with an embodiment of the present invention (breathing mask not shown);

FIG. 10 is an enlarged view of the device for collecting airway gas shown in FIG. 9 in area B;

FIG. 11 is a cross-sectional view of the collection tube of the device for collecting airway gas shown in FIG. 9;

FIG. 12 is a cross-sectional view of a delivery tube of the device for collecting airway gas of FIG. 9;

FIG. 13 is a cross-sectional view of a third configuration of an apparatus for collecting airway gas provided in accordance with an embodiment of the present invention (breathing mask not shown);

FIG. 14 is a cross-sectional view of the collection tube of the device for collecting airway gas shown in FIG. 13 (with the addition of a collection cap);

fig. 15 is a cross-sectional view of a respiratory mask provided by an embodiment of the present invention.

Icon: 100-a breathing mask; 110-output unidirectional structure; 120-an inlet and outlet structure; 130-a mask support; 200-a collecting and collecting device; 210-a collection tube; 211-a first collection chamber; 212-a second collection chamber; 220-a collection lid; 230-a draft tube; 231-a flow guide opening end; 232-flow guiding socket end; 233-diversion holes; 234-a bump; 240-connecting pipe; 250-a blocking structure; 251-plugging the through hole; 252-blocking the step; 253-sealing ring plugging; 260-a limiting structure; 270-keep tube.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Some embodiments of the invention are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

Examples

Referring to fig. 1-15, the present embodiment provides a device for collecting airway gas. Fig. 1 to 8 are schematic structural views related to a respiratory tract gas collecting device using an occluding sealing ring in an occluding structure, wherein fig. 1 is a perspective view of the respiratory tract gas collecting device, fig. 2 is a sectional view of the respiratory tract gas collecting device, fig. 3 is an enlarged view of a region a of the respiratory tract gas collecting device shown in fig. 2, fig. 4 is an exploded view of the respiratory tract gas collecting device, and fig. 4 is a sectional view of a breathing mask, a connecting pipe and a collecting pipe, and a flow guide pipe is in a front view; fig. 5 is a sectional view of the apparatus for collecting respiratory tract gas shown in fig. 2 with a connecting tube removed, fig. 6 is a sectional view of a collecting tube of the apparatus for collecting respiratory tract gas shown in fig. 2, fig. 7 is a perspective view of a flow guide tube of the apparatus for collecting respiratory tract gas shown in fig. 2, and fig. 8 is a sectional view of the flow guide tube shown in fig. 7. Fig. 9-12 are schematic structural views related to the respiratory tract gas collecting device adopting a sealing step in the sealing structure, wherein fig. 9 is a cross-sectional view of the respiratory tract gas collecting device provided in the present embodiment without showing a breathing mask, fig. 10 is an enlarged view of a region B of the respiratory tract gas collecting device shown in fig. 9, fig. 11 is a cross-sectional view of a collecting pipe shown in fig. 9, and fig. 12 is a cross-sectional view of a flow guide pipe shown in fig. 9. In the device for collecting respiratory gases shown in fig. 1-12, the condensate of exhaled breath condensation can be directly collected into a collecting tube of the pre-stored preservation solution; fig. 13 and 14 show the apparatus for collecting respiratory tract gas, in which condensate of exhaled breath condensation is directly collected into an empty collection tube, and a preservation solution is pre-stored in a preservation tube, fig. 13 is a cross-sectional view of the apparatus for collecting respiratory tract gas provided in this embodiment, which is not shown in the figure, and fig. 14 is a cross-sectional view of the collection tube shown in fig. 13 and covered with the collection cover. Fig. 15 is a sectional view of the breathing mask provided in this embodiment.

Referring to fig. 1-15, the device for collecting respiratory tract gas can be used for sample collection of respiratory tract diseases, especially for detection of respiratory tract diseases with high sample loading requirements.

The respiratory tract gas collecting device comprises a breathing mask 100 and a collecting and collecting device 200;

the interior surface of the respiratory mask 100 is capable of condensing exhaled breath into condensate. When the patient or suspected patient waits for the sampling person to wear the respiratory mask 100, the exhaled breath encounters the inner surface of the respiratory mask 100 and condenses into condensate, which then flows along the inner surface of the respiratory mask 100 into the collection device 200. Optionally, the respiratory mask 100 is cryogenically stored prior to use to increase the amount of condensation of exhaled breath into condensate. The low-temperature storage breathing mask 100 may be stored in a refrigerator compartment, for example, or may be stored in other low-temperature environments.

The breathing mask 100 is communicated with a collecting and collecting device 200, and the collecting and collecting device 200 is used for collecting condensate collected by the breathing mask 100.

In an alternative of this embodiment, all or a portion of the inner surface of the respiratory mask 100 is provided with a hydrophobic membrane that is capable of condensing exhaled breath into condensate. By using a hydrophobic membrane, the efficiency of condensation of the exhaled breath into condensate is improved to a certain extent. When the person to be sampled wears the respiratory mask 100, the exhaled breath encounters the hydrophobic membrane on the inner surface of the respiratory mask 100 and is condensed into condensate, and then the condensate flows into the collecting and collecting device 200 along the inner surface of the respiratory mask 100.

Optionally, the hydrophobic membrane employs cryocondensation techniques or other techniques; condensation techniques are employed to somewhat increase the efficiency with which the exhalation mask 100 condenses the exhaled breath into condensate.

Optionally, the hydrophobic membrane is a hydrophobic membrane layer or a hydrophobic coating, or other layer. Optionally, the hydrophobic membrane is made of nano materials, or materials with special compositions or materials with special processes.

Referring to fig. 15, in an alternative of the present embodiment, the output end of the breathing mask 100 is provided with an output unidirectional structure 110 for unidirectional medium flow into the collection device 200; the output unidirectional structure 110 is used to prevent the liquid or part of the gas from flowing from the collection device 200 to the respiratory mask 100, i.e., the output unidirectional structure is used to allow the liquid or part of the gas to flow from the respiratory mask 100 to the collection device 200 in a single direction. Optionally, the output one-way structure is a one-way valve or a one-way diaphragm, or other structure, wherein the one-way diaphragm opens, for example, upon insufflation and closes upon inspiration. Optionally, the unidirectional membrane is a cross-shaped slot.

Optionally, the breathing mask 100 is provided with an air inlet and outlet structure 120; the inlet and outlet structures 120 are used to circulate air between the interior and exterior of the respiratory mask 100.

Optionally, the input end of the respiratory mask 100 is shaped as a streamline to conform to the human face.

Referring to fig. 1, a mask support 130 is optionally provided at the input end of the respiratory mask 100 to facilitate connection of a ventilator or the like via the mask support 130.

In the respiratory tract gas collecting device of the present embodiment, the exhaled breath can be condensed into condensate through the inner surface of the respiratory mask 100, so that the condensate flows into the collecting and collecting device 200 for collection; when a sample is collected, a patient or suspected case waits for a sampling person to wear the breathing mask 100, the exhaled breath of the sampling person meets the inner surface of the breathing mask 100 and is condensed into condensate, and then the condensate flows into the collecting and collecting device 200 to finish collection when a certain amount of condensate is reached; the device for collecting respiratory tract gas is adopted for sampling, the virus load capacity is far higher than that of the nasopharyngeal swab and oropharyngeal swab samples, and the accuracy rate of virus detection can be effectively improved; the personnel to be sampled can collect the sample by themselves, thus greatly reducing the working intensity of the medical personnel; through respirator 100, greatly reduce or avoid treating that the expiratory gas of sampling personnel causes aerosol pollution to the environment, reduced medical personnel's infection risk.

The device for collecting respiratory tract gas in the embodiment adopts a breath condensate sampling mode, and the virus load of the breath condensate sampling mode is only second to that of alveolar lavage fluid and is far higher than that of nasopharyngeal swabs and oropharyngeal swabs. The alveolar lavage fluid is an invasive sampling mode, and is difficult to collect, so that the alveolar lavage fluid is only suitable for severe patients. Therefore, the breath condensate provides a non-invasive and high-virus-load self-sampling solution for mild symptoms, suspected cases and screening crowds.

Referring to fig. 1-14, in an alternative embodiment, collection device 200 includes collection cap 220 and open-top collection tube 210; the bottom of collection tube 210 is sealed; optionally, collection lid 220 is a lid or plug. The collection lid 220 is provided with a collection lid groove and/or a collection lid protrusion; that is, the collection cover 220 is provided with a collection cover groove (as shown in fig. 14), or the collection cover 220 is provided with a collection cover protrusion, or the collection cover 220 is provided with a collection cover groove and a collection cover protrusion. Optionally, the collection lid groove and/or the collection lid protrusion extend in the axial direction of the collection lid 220 to facilitate gripping by an automated machine.

The collection cap 220 can be sealed to cover the top opening of the collection tube 210; the collection cap 220 may be connected to the collection tube 210 by a threaded, bayonet, or snap connection, or other connection. Optionally, the collection cap 220 is provided with an internal thread and the collection tube 210 is provided with an external thread that mates with the internal thread of the collection cap 220.

The respiratory mask 100 is capable of sealing connection with the top opening of the collection tube 210. Alternatively, the respiratory mask 100 can be directly or indirectly sealingly connected to the top opening of the collection tube 210.

For example, when the respiratory mask 100 can be directly and sealingly connected to the top opening of the collection tube 210, the respiratory mask 100 can be connected to the top opening of the collection tube 210 by a threaded, bayonet, or snap connection, or other connection. Alternatively, the respiratory mask 100 is connected to the top opening of the collection tube 210 by a bayonet connection.

For another example, when the respiratory mask 100 can be indirectly connected to the top opening of the collecting tube 210 in a sealing manner, the respiratory mask 100 can be connected to the top opening of the collecting tube 210 through the flow guiding tube 230 or the connecting tube 240 according to the embodiment.

Referring to fig. 4, 9 and 13, in an alternative embodiment, the respiratory mask 100 and the collection device 200 are communicated through a connection pipe 240, the connection pipe 240 is L or linear, and the comfort of the person to be sampled when using the device for collecting respiratory tract gas is improved through the connection pipe 240.

Optionally, the connection manner of the breathing mask 100 and the connection pipe 240 is a threaded connection, a plug-in connection, a snap-fit connection, or other connection manners; optionally, the connection manner of the breathing mask 100 and the connection pipe 240 is a plug connection.

Optionally, the collection device 200 is connected to the connection tube 240 by a screw, a plug, a snap, or other connection. Optionally, the collection and collection device 200 is connected to the connection tube 240 by a screw thread.

Optionally, the head end of the connecting tube 240 is inserted into the output end of the breathing mask 100; the tail end of the connecting tube 240 is inserted into the input end of the collecting and collecting device 200.

Referring to fig. 5, 7-10, 12 and 13, in an alternative to this embodiment, the collection and collection device 200 includes a delivery tube 230 that is capable of connecting the respiratory mask 100 to the collection tube 210.

A blocking structure 250 with a blocking through hole 251 is arranged in the collecting pipe 210; the blocking structure 250 divides the collection tube 210 into a first collection chamber 211 and a second collection chamber 212, as shown in fig. 6. For example, the first collection chamber 211 is used to collect condensate from the respiratory mask 100 and the second collection chamber 212 is used to pre-store a preservation fluid. Optionally, the first collection chamber 211 is located above the second collection chamber 212.

The draft tube 230 includes a corresponding draft open end 231 and a draft socket end 232; the delivery opening end 231 of the delivery tube 230 is capable of being coupled to the respiratory mask 100, as shown in fig. 7, 8, and 12. Optionally, the connection between the opening 231 of the delivery tube 230 and the respiratory mask 100 is a threaded connection, a plug-in connection, a snap-fit connection, or other connection. Referring to fig. 5, the diversion opening 231 of the diversion tube 230 may be connected to the breathing mask 100 by plugging.

As shown in fig. 7, 8 and 12, the flow guiding tube 230 is optionally a tube with one open end and the other closed end, the open end is a flow guiding open end 231, and the closed end is a flow guiding socket end 232. Optionally, the flow directing spigot end 232 has flow directing holes 233 so that condensate flows into the flow directing tube 230 from the flow directing open end 231 and out of the flow directing tube 230 from the flow directing holes 233. Optionally, the diversion holes 233 are polygonal or circular, or other shapes. The polygon is, for example, a trapezoid, a square, a rectangle, or the like. Optionally, the guiding holes 233 are disposed on the sidewall of the guiding socket end 232 of the guiding pipe 230, so that the guiding opening end 231 of the guiding pipe 230 can well divide the collecting pipe 210 into the first collecting cavity 211 and the second collecting cavity 212. Optionally, one or more diversion holes 233 are disposed on a sidewall of the diversion socket end 232 of the diversion pipe 230; optionally, a plurality of flow guide holes 233 are uniformly disposed on the sidewall of the flow guide socket end 232 of the flow guide tube 230. Optionally, the flow guide socket end 232 of the flow guide tube 230 is stepped, as shown in fig. 3, 4, 7, and 8. Through the stepped diversion socket end 232, the sealing performance between the diversion pipe 230 and the plugging structure 250 is improved, and further the sealing performance between the diversion pipe 230 and the collection pipe 210 is improved, so that the preservation liquid can be better encapsulated in the second collection cavity 212. Optionally, the flow guide spigot end 232 of the flow guide tube 230 is cone-shaped, as shown in fig. 10 and 12. Through the cone-shaped guide socket end 232, the sealing performance between the guide pipe 230 and the blocking structure 250 is improved, and further the sealing performance between the guide pipe 230 and the collecting pipe 210 is improved, so that the preserving fluid can be better encapsulated in the second collecting cavity 212. Optionally, a protrusion 234 is disposed inside the bottom of the diversion socket end 232, and the protrusion 234 protrudes toward the diversion opening end 231; by providing the protrusion 234 on the inside of the bottom of the inlet 232, the flow rate of the condensate out of the draft tube 230 is increased to some extent, and the condensate is prevented or reduced from being trapped in the draft tube 230 to some extent. The specific structural arrangement can be reasonably adjusted according to actual requirements, and all the specific structural arrangement belongs to the protection scope of the embodiment.

The flow guide socket end 232 of the flow guide tube 230 can be inserted into the top opening of the collection tube 210 and inserted into the blocking through hole 251, so that the first collection cavity 211 and the second collection cavity 212 which are communicated with each other are sealed and isolated. That is, when the flow guide socket end 232 of the flow guide tube 230 is plugged into the plugging through hole 251, the first collecting cavity 211 and the second collecting cavity 212 are changed from a mutually communicated state to a sealed and isolated state, and at this time, the first collecting cavity 211 and the second collecting cavity 212 are not communicated with each other; when the guide-flow socket end 232 of the guide pipe 230 is separated from the blocking through-hole 251, the first collection chamber 211 and the second collection chamber 212 are changed from a sealed and isolated state to a mutually communicated state, and at this time, the first collection chamber 211 and the second collection chamber 212 are communicated with each other.

Optionally, the collecting cover 220 can be hermetically covered on the diversion opening end 231 of the diversion pipe 230, or the collecting cover 220 can be hermetically covered on the diversion opening end 231 of the diversion pipe 230 and the top opening of the collecting pipe 210; so as to improve the sealing performance and the sterility of the collecting pipe 210 provided with the flow guide pipe 230 and avoid impurities entering the flow guide pipe 230.

Referring to fig. 2-6 and 9-11, in an alternative embodiment, the diameter of the blocking through hole 251 near the top opening of the collecting pipe 210 is larger than that far from the top opening of the collecting pipe 210; so as to improve the sealing performance between the guide pipe 230 and the blocking structure 250, and further improve the sealing performance between the guide pipe 230 and the collecting pipe 210, so that the preserving fluid can be better encapsulated in the second collecting cavity 212.

Optionally, the flow guide socket end 232 of the flow guide tube 230 is matched with the aperture of the blocking through hole 251.

Optionally, when the flow guiding socket end 232 of the flow guiding pipe 230 is inserted into the blocking through hole 251, the lowest position of the flow guiding hole 233 is higher than the lowest position of the blocking structure 250; the lowest position of the diversion hole 233 and the lowest position of the blocking structure 250 are both ends far away from the top opening of the collecting pipe 210. The lowermost point of the flow guiding hole 233 is higher than the lowermost point of the blocking structure 250 so that the preservation fluid can be better encapsulated in the second collection chamber 212.

Referring to fig. 9-11, in an alternative to the present embodiment, the blocking structure 250 is a blocking step 252; the blocking step 252 is integrated in the collection tube 210; optionally, the sealing step 252 is part of the collection tube 210, and the sealing step 252 is integrally formed with the collection tube 210. Optionally, the blocking through hole 251 penetrates through the blocking step 252 in the axial direction of the blocking step 252.

Referring to fig. 1-6, in an alternative embodiment, the blocking structure 250 is a blocking seal 253. Optionally, the collecting pipe 210 is provided with a limiting plugging step, and the bottom of the plugging sealing ring 253 is connected with the limiting plugging step; the position of the plugging sealing ring 253 on the collecting pipe 210 is positioned by limiting the plugging step. Optionally, the blocking through hole 251 penetrates through the blocking seal 253 in the axial direction of the blocking seal 253.

The blocking structure 250 of the present embodiment is exemplified by the blocking step 252 and the blocking sealing ring 253, and other blocking structures 250 capable of implementing the functional structure of the present embodiment also belong to the protection scope of the present embodiment.

Referring to fig. 1-5, 9, 10 and 13, in an alternative embodiment, the top end of the collection tube 210 is connected to the delivery tube 230 near the delivery socket end 232.

Optionally, the top end of the collecting tube 210 is connected to the flow guiding tube 230 by a screw connection, a plug-in connection, a snap-in connection, or other connection. Alternatively, the top end of the collection tube 210 is connected to the delivery tube 230 by a threaded connection, as shown in fig. 1-5, 9, 10, and 13.

Referring to fig. 3 and 10, in an alternative of the present embodiment, the collection tube 210 is provided with a stopper 260 for restricting the insertion and movement of the guide tube 230 along the collection tube 210; the limiting structure is a limiting bulge or a limiting step; the collecting pipe 210 is provided with a limiting structure to limit the insertion and moving position of the guide pipe 230 along the collecting pipe 210, so that the stability of the seal between the guide pipe 230 and the collecting pipe 210 is improved, and the preserving fluid can be better encapsulated in the second collecting cavity 212.

Optionally, the draft tube 230 is provided with a limiting structure 260 for limiting the insertion movement of the draft tube 230 along the collection tube 210. The limiting structure is, for example, a limiting protrusion or a limiting step. A limiting structure is arranged on the guide pipe 230 to limit the guide pipe 230 to be inserted into the moving position along the collecting pipe 210, so that the sealing stability between the guide pipe 230 and the collecting pipe 210 is improved, and the preserving fluid can be better encapsulated in the second collecting cavity 212.

In the device for collecting respiratory tract gas in this embodiment, the collecting tube 210 is divided into the first collecting cavity 211 and the second collecting cavity 212 by the blocking structure 250, and the flow guide socket end 232 of the flow guide tube 230 can be inserted into the blocking through hole 251 to hermetically isolate the first collecting cavity 211 and the second collecting cavity 212 which are communicated with each other, so that the second collecting cavity 212 can be packaged with the preservative solution, the condensate which can collect the respiratory tract gas directly flows into the collecting tube which stores the preservative solution, that is, the device for storing the preservative solution and the device for collecting the condensate are integrated into one device; the device for collecting the respiratory tract gas has the advantages of few configuration parts, simple use and operation and convenience for collecting samples by a person waiting for sampling.

In this embodiment, the device for collecting respiratory tract gas may further adopt a split type device, that is, the device for storing and preserving the liquid and the device for collecting the condensate are two devices. Referring to fig. 13 and 14, in an alternative embodiment, the collection and collection device 200 includes a holding tube 270; the preservation pipe 270 is filled with preservation solution; i.e., the preservation fluid is enclosed within the preservation tube 270. Alternatively, the preservation tube 270 covers the preservation cover opened at the top of the preservation tube 270 by sealing to enclose the preservation solution. That is, the collecting pipe 210 is used for collecting the condensate, the preserving pipe 270 is used for storing the preserving fluid, when the collecting pipe 210 collects the condensate, the preserving pipe 270 is opened, the preserving fluid in the preserving pipe 270 is poured into the collecting pipe 210, and the condensate and the preserving fluid are mixed.

In view of the above-mentioned integrated device for collecting respiratory tract gas, the present embodiment provides a method for collecting respiratory tract gas, which employs the above-mentioned integrated device for collecting respiratory tract gas; the method comprises the following steps:

the breathing mask 100 condenses the exhaled breath into a condensate;

the condensate flows along the flow-guide tube 230 towards the first collection chamber 211 of the collection tube 210;

the draft tube 230 is removed, the breathing mask 100 is removed along with the draft tube 230, and the condensate flows from the first collection chamber 211 through the blocking structure 250 to the second collection chamber 212; wherein the second collection cavity 212 is pre-stored with a preservation solution;

the collection cap 220 is used to seal and cover the top opening of the collection tube 210 to complete the sampling.

The method for collecting the respiratory tract gas has the advantages that the operation of collecting samples is convenient, the virus collection capacity is high, the environmental aerosol pollution in the collection process is not easy to cause, and the infection risk of medical workers is greatly reduced; meanwhile, the personnel to be sampled can collect the sample by themselves, so that the working intensity of medical personnel is greatly reduced.

Aiming at the split type device for collecting the respiratory tract gas, the embodiment provides a method for collecting the respiratory tract gas, and the split type device for collecting the respiratory tract gas is adopted; the method comprises the following steps:

the breathing mask 100 condenses the exhaled breath into a condensate;

condensate flows to collector tube 210;

opening the preservation pipe 270, and pouring the preservation liquid in the preservation pipe 270 into the collection pipe 210;

the collection cap 220 is used to seal and cover the top opening of the collection tube 210 to complete the sampling. The method for collecting the respiratory tract gas has the advantages that the operation of collecting samples is convenient, the virus collection capacity is high, the environmental aerosol pollution in the collection process is not easy to cause, and the infection risk of medical workers is greatly reduced; meanwhile, the personnel to be sampled can collect the sample by themselves, so that the working intensity of medical personnel is greatly reduced.

In an alternative to this embodiment, the respiratory mask 100 is cryogenically stored prior to the respiratory mask 100 condensing the exhaled breath into condensate to increase the amount of exhaled breath that condenses into condensate. The low-temperature storage respiratory mask 100 may be stored in a refrigerator compartment, for example, or may be stored in other low-temperature environments.

In the method for collecting respiratory tract gas provided by the embodiment, the above device for collecting respiratory tract gas is adopted, and the technical features of the above device for collecting respiratory tract gas disclosed in the above are also applicable to the method for collecting respiratory tract gas, and the technical features of the above device for collecting respiratory tract gas disclosed in the above are not repeated. The method for collecting respiratory tract gas in the embodiment has the advantages of the device for collecting respiratory tract gas, and the advantages of the device for collecting respiratory tract gas disclosed in the embodiment are not repeated.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for collecting respiratory tract gas is characterized by comprising a breathing mask and a collecting and collecting device;

2. The device for collecting respiratory gases of claim 1, wherein all or part of the inner surface of the respiratory mask is provided with a hydrophobic membrane capable of condensing exhaled breath into condensate;

and/or the collection and collection device comprises a collection cover and a collection pipe with an opening at the top; the collecting cover can be hermetically covered on the top opening of the collecting pipe; the breathing mask can be in sealing connection with the top opening of the collecting tube.

3. The device for collecting respiratory gases of claim 2, wherein the collection and collection device comprises a flow conduit capable of connecting the respiratory mask to the collection tube;

the flow guide socket end is provided with a flow guide hole;

4. A device for collecting respiratory gases according to claim 3 wherein the occluding structure is an occluding step; the blocking step is integrated in the collecting pipe;

or, the plugging structure is a plugging sealing ring.

5. The device for collecting airway gas according to claim 3, wherein the top end of the collecting tube is connected to the position of the flow guide tube near the flow guide socket end;

6. A device for collecting respiratory gases according to claim 3, wherein the diameter of the blocking through-hole near the top opening of the collecting tube is larger than the diameter of the hole far from the top opening of the collecting tube;

7. The device for collecting respiratory gases of claim 3, wherein the flow directing socket end is stepped or the flow directing socket end is cone-shaped;

8. A device for collecting respiratory gases according to claim 3 wherein the collection tube is provided with a stop formation for limiting the insertion and movement of the flow guide tube along the collection tube;

9. The device for collecting respiratory gases of claim 2, wherein the collection and collection device comprises a retention tube; the preservation tube is filled with preservation solution.

10. The device for collecting respiratory gases of claim 2 wherein the hydrophobic membrane employs cryocondensation technology;

11. The respiratory tract gas collecting device according to any one of claims 1 to 10, wherein the respiratory mask is communicated with the collecting and collecting device through a connecting pipe, and the connecting pipe is L type or linear type;

12. A device for collecting respiratory gases according to any of claims 1 to 10, wherein the output end of the respiratory mask is provided with an output unidirectional structure for unidirectional medium flow into the collecting and collecting device;

an air inlet and outlet structure is arranged on the breathing mask;

and a mask support is arranged on the input end of the breathing mask.

13. A method of collecting respiratory gases, wherein a device for collecting respiratory gases according to any one of claims 3 to 8 is used; the method comprises the following steps:

the breathing mask condenses the exhaled breath into a condensate;

14. A method of collecting respiratory gases, wherein a device for collecting respiratory gases according to claim 9 is used; the method comprises the following steps:

the breathing mask condenses the exhaled breath into a condensate;

the condensate flows to the collection pipe;

15. The method of claim 13 or 14, wherein the respiratory mask is cryogenically stored prior to condensing exhaled breath into condensate.