Disposable expiration collection assembly
By using PTFE connecting pipes and a one-way valve design, the problems of saliva contamination and material adsorption in existing breath sampling devices are solved, providing a more accurate VOC detection and a breath sampling component that prevents cross-infection.
Patent Information
- Application Number
- CN202422639909.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-10-30
AI Technical Summary
Among existing breath VOC sampling devices, mouthpiece devices are prone to saliva contamination, while the engineering plastic materials of mask devices can adsorb VOC molecules, affecting the test results and causing user discomfort and inaccurate test results.
The connecting pipes and one-way valves made of polytetrafluoroethylene (PTFE) are combined with a hydrophobic filter membrane to prevent back diffusion and cross-contamination of gases, reduce the adsorption of VOCs by the material, and improve detection accuracy.
It achieves a comfortable user experience and more accurate VOC detection results, reduces the adsorption of VOCs by materials, and prevents cross-contamination.
Smart Images
Figure CN223489753U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of breath sampling device technology, and more particularly to a disposable breath sampling component. Background Technology
[0002] Existing breath VOC (volatile organic compound) sampling devices mostly employ disposable mouthpiece designs, primarily in two types: face mask and mouthpiece. Mouthpiece sampling devices introduce a large amount of saliva into the sampling tubing and testing system during use, easily causing user discomfort and affecting test results. Face mask sampling devices, on the other hand, often use engineering plastics such as PP and PC for their connecting components, making them suitable only for ventilators, oxygen delivery systems, and other similar equipment. Since engineering plastics themselves release a significant amount of VOC molecules, and these materials can adsorb VOC molecules, they can significantly interfere with the final results of breath testing devices, affecting data interpretation. Therefore, this invention proposes a disposable breath sampling component. Utility Model Content
[0003] This application provides a disposable breath sampling component that is more comfortable to use and does not affect VOC detection, resulting in more accurate detection results.
[0004] In view of this, this application provides a disposable exhalation collection component, including: an exhalation mask, a connecting tube, and a connecting connector;
[0005] The exhalation mask includes an air inlet, a first air outlet, and a second air outlet;
[0006] One end of the connecting tube is connected to the first outlet end of the exhalation mask, and the other end is connected to the connecting connector;
[0007] The first outlet end is equipped with a first one-way valve to prevent gas from diffusing in the reverse direction.
[0008] The second air outlet is connected to the outside air, and the second air outlet is provided with a second one-way valve for discharging excess gas from the exhalation mask.
[0009] The connecting pipe is made of polytetrafluoroethylene.
[0010] Optionally, one end of the connecting tube is connected to the first outlet end of the exhalation mask via a connecting handle.
[0011] Optionally, the first outlet end of the exhalation mask is interference-fitted with one end of the connecting handle;
[0012] The connecting handle has a filter membrane mounting groove on the side near the first air outlet end that communicates with the inside of the first air outlet end.
[0013] The filter membrane mounting groove is provided with a hydrophobic filter membrane and a barrier cover for fixing the hydrophobic filter membrane in the filter membrane mounting groove, arranged sequentially from the inside to the outside.
[0014] One end of the connecting pipe passes through the connecting handle and is connected to the inside of the filter membrane mounting slot.
[0015] Optionally, the hydrophobic filter membrane is a polytetrafluoroethylene hydrophobic filter membrane.
[0016] Optionally, the connecting handle and the connecting pipe, as well as the connecting pipe and the connecting joint, are all connected by rubber-coated connectors.
[0017] Optionally, the material of the rubber-coated connector is polytetrafluoroethylene.
[0018] Optionally, the first one-way valve includes a first valve body and a first one-way diaphragm fixed on the first valve body;
[0019] The second one-way valve includes a second valve body and a second one-way diaphragm fixed on the second valve body.
[0020] Optionally, the first outlet end is provided with a first fixing groove for fixing the first valve body.
[0021] The first valve body is interference-fitted with the first fixing groove;
[0022] The second outlet end is provided with a second fixing groove for fixing the second valve body;
[0023] The second valve body is interference-fitted with the second fixing groove.
[0024] Optionally, both the first fixing groove and the second fixing groove are provided with limiting ribs to prevent excessive pressing and displacement.
[0025] Optionally, both the exhalation mask and the connecting connector are made of polytetrafluoroethylene (PTFE).
[0026] As can be seen from the above technical solutions, the embodiments of this application have the following advantages: This disposable breath collection component, by using a connecting pipe made of polytetrafluoroethylene, can effectively reduce pollution and adsorption of VOC molecules, making the detection results more accurate. Furthermore, by setting a first one-way valve and a second one-way valve, it can provide users with a good exhalation experience and prevent cross-infection. Attached Figure Description
[0027] Figure 1 This is an exploded view of the disposable breath collection component in the embodiments of this application;
[0028] Figure 2 This is an exploded view of the exhalation mask in the embodiments of this application;
[0029] The attached figures are labeled as follows:
[0030] 1-Exhalation mask, 11-Inlet end, 12-First outlet end, 13-Second outlet end, 14-First valve body, 15-First one-way diaphragm, 16-Second valve body, 17-Second one-way diaphragm, 2-Connecting tubing, 3-Connecting connector, 4-Connecting handle, 41-Hydrophobic filter membrane, 42-Barrier cap. Detailed Implementation
[0031] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.
[0032] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0033] Unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0034] This application provides an embodiment of a disposable breath sampling component. Please refer to [link / reference needed]. Figure 1 and Figure 2 .
[0035] The disposable exhalation collection component in this embodiment includes: an exhalation mask 1, a connecting tube 2, and a connecting connector 3. The exhalation mask 1 includes an air inlet 11, a first air outlet 12, and a second air outlet 13. One end of the connecting tube 2 is connected to the first air outlet 12 of the exhalation mask 1, and the other end is connected to the connecting connector 3. The first air outlet 12 is provided with a first one-way valve to prevent back diffusion of gas. The second air outlet 13 is connected to the outside air, and the second air outlet 13 is provided with a second one-way valve to discharge excess gas in the exhalation mask 1. The connecting tube 2 is made of polytetrafluoroethylene.
[0036] It should be noted that this disposable breath collection device uses a PTFE (polytetrafluoroethylene) connecting tube 2, which can effectively reduce contamination and the adsorption of VOC molecules by the product material itself, making the test results more accurate. In addition, by setting a first one-way valve and a second one-way valve, it can provide users with a good exhalation experience and prevent cross-infection.
[0037] The above is Embodiment 1 of a disposable breath sampling device provided in this application. The following is Embodiment 2 of a disposable breath sampling device provided in this application. Please refer to the following for details. Figure 1 and Figure 2 .
[0038] The disposable exhalation collection component in this embodiment includes: an exhalation mask 1, a connecting tube 2, and a connecting connector 3. The exhalation mask 1 includes an air inlet 11, a first air outlet 12, and a second air outlet 13. Specifically, the second air outlet 13 is located on one side of the exhalation mask 1. One end of the connecting tube 2 is connected to the first air outlet 12 of the exhalation mask 1, and the other end is connected to the connecting connector 3. The first air outlet 12 is provided with a first one-way valve to prevent back diffusion of gas. The second air outlet 13 is connected to the outside air, and the second air outlet 13 is provided with a second one-way valve to discharge excess gas in the exhalation mask 1. The connecting tube 2 is made of polytetrafluoroethylene.
[0039] Understandably, the first one-way valve prevents gas in the back-end device from diffusing back to the exhalation mask 1, thus avoiding cross-infection to the user; the second one-way valve allows excess gas in the exhalation mask 1 to be discharged from here, and also prevents outside air from entering the exhalation mask 1, thus effectively improving the breathing experience.
[0040] One end of the connecting tube 2 is connected to the first outlet end 12 of the exhalation mask 1 via the connecting handle 4.
[0041] The first outlet end 12 of the exhalation mask 1 is press-fitted with one end of the connecting handle 4. Specifically, the inner wall of the first outlet end 12 is pressed against the outer wall of the connecting handle 4 to cause elastic deformation, thereby fixing them together and achieving a sealing effect. A filter membrane mounting groove is provided on the side of the connecting handle 4 near the first outlet end 12, which is connected to the inside of the first outlet end 12. A hydrophobic filter membrane 41 and a barrier cover 42 for fixing the hydrophobic filter membrane 41 in the filter membrane mounting groove are arranged sequentially from the inside to the outside in the filter membrane mounting groove. One end of the connecting pipe 2 passes through the connecting handle 4 and is connected to the inside of the filter membrane mounting groove.
[0042] Understandably, by passing one end of the connecting tube 2 through the connecting handle 4 and connecting it to the inside of the filter membrane mounting slot, exhaled air can directly enter the connecting tube 2 from the exhalation mask 1 without passing through the inner cavity of the connecting handle 4 (experiments have shown that the cavity of the connecting handle 4 in the prior art contains a large amount of VOC pollutants, which will have a significant impact on the test results), thereby further improving the accuracy of the detection.
[0043] The hydrophobic filter membrane 41 is a polytetrafluoroethylene hydrophobic filter membrane 41, which can effectively filter water vapor, particulate matter, aerogel, viruses, etc. in exhaled air.
[0044] The connecting handle 4 and the connecting pipe 2, as well as the connecting pipe 2 and the connecting connector 3, are all connected via rubber-coated connectors. Specifically, during the injection molding of the connecting handle 4, the connecting pipe 2 is encapsulated within its inner cavity using an injection molding process. The connecting pipe 2 requires a hot-pressing process to create serrated indentations, which helps to ensure a secure fixation, prevents it from loosening, and improves the yield rate of the rubber-coated injection molding. The connection between the connecting pipe 2 and the connecting connector 3 is similar. Preferably, the material of the rubber-coated connector is polytetrafluoroethylene (PTFE).
[0045] It should be noted that the connecting handle 4 and the connecting pipe 2, as well as the connecting pipe 2 and the connecting connector 3, are all integrally formed by polytetrafluoroethylene injection molding, which can reduce pollution, reduce assembly operations, reduce costs, and provide a good connection effect that is not easy to loosen.
[0046] The first one-way valve includes a first valve body 14 and a first one-way diaphragm 15 fixed to the first valve body 14. The second one-way valve includes a second valve body 16 and a second one-way diaphragm 17 fixed to the second valve body 16. Specifically, both the first one-way diaphragm 15 and the second one-way diaphragm 17 have small perforated structures in the middle. The first valve body 14 and the second valve body 16 are respectively provided with barb structures. During installation, the valve is fixed by fastening the small perforated structures on the first one-way diaphragm 15 and the second one-way diaphragm 17 to the barb structures on the first valve body 14 and the second valve body 16, respectively.
[0047] The first outlet end 12 has a first fixing groove for fixing the first valve body 14, and the first valve body 14 is interference-fitted with the first fixing groove; the second outlet end 13 has a second fixing groove for fixing the second valve body 16, and the second valve body 16 is interference-fitted with the second fixing groove.
[0048] Both the first and second fixing grooves are equipped with limiting ribs to prevent displacement due to excessive pressing.
[0049] Preferably, both the exhalation mask 1 and the connecting connector 3 are made of polytetrafluoroethylene (PTFE), which can further reduce the impact of the product materials on the gas passing through.
[0050] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.
Claims
1. A disposable breath sampling device, characterized in that, include: Exhalation mask, connecting tubing, and connectors; The exhalation mask includes an air inlet, a first air outlet, and a second air outlet; One end of the connecting tube is connected to the first outlet end of the exhalation mask, and the other end is connected to the connecting connector; The first outlet end is equipped with a first one-way valve to prevent gas from diffusing in the reverse direction. The second air outlet is connected to the outside air, and the second air outlet is provided with a second one-way valve for discharging excess gas from the exhalation mask. The connecting pipe is made of polytetrafluoroethylene.
2. The disposable exhalation collection device according to claim 1, characterized in that, One end of the connecting tube is connected to the first outlet end of the exhalation mask via a connecting handle.
3. The disposable exhalation collection component according to claim 2, characterized in that, The first outlet end of the exhalation mask is interference-fitted with one end of the connecting handle; The connecting handle has a filter membrane mounting groove on the side near the first air outlet end that communicates with the inside of the first air outlet end. The filter membrane mounting groove is provided with a hydrophobic filter membrane and a barrier cover for fixing the hydrophobic filter membrane in the filter membrane mounting groove, arranged sequentially from the inside to the outside. One end of the connecting pipe passes through the connecting handle and is connected to the inside of the filter membrane mounting slot.
4. The disposable expiratory breath collection device according to claim 3, characterized in that, The hydrophobic filter membrane is a polytetrafluoroethylene hydrophobic filter membrane.
5. The disposable expiratory breath collection device according to claim 2, characterized in that, The connecting handle and the connecting pipe, as well as the connecting pipe and the connecting joint, are all connected by rubber-coated connectors.
6. The disposable expiratory breath collection device according to claim 5, characterized in that, The material of the rubber-coated connector is polytetrafluoroethylene.
7. The disposable expiratory breath sampling device according to claim 1, characterized in that, The first one-way valve includes a first valve body and a first one-way diaphragm fixed on the first valve body; The second one-way valve includes a second valve body and a second one-way diaphragm fixed on the second valve body.
8. The disposable expiratory breath collection device according to claim 7, characterized in that, The first outlet end is provided with a first fixing groove for fixing the first valve body. The first valve body is interference-fitted with the first fixing groove; The second outlet end is provided with a second fixing groove for fixing the second valve body; The second valve body is interference-fitted with the second fixing groove.
9. The disposable expiratory breath collection device according to claim 8, characterized in that, Both the first fixing groove and the second fixing groove are provided with limiting ribs to prevent excessive pressing and displacement.
10. The disposable expiratory breath collection device according to claim 1, characterized in that, Both the exhalation mask and the connecting connector are made of polytetrafluoroethylene (PTFE).