One-way valve suitable for opening part of gas collection bag and gas collection bag

Abstract

The utility model relates to the technical field of medical auxiliary instruments, and provides a one-way valve suitable for an opening portion of a gas collection bag and the gas collection bag, the one-way valve comprises a valve assembly and a valve port which are arranged in the bag opening of the gas collection bag, and the valve port has an open state and a closed state. The valve assembly comprises a fixed plate fixed to the inner wall of a bag opening of the gas collection bag, a guide rod with one end fixed to the fixed plate, a sliding plate arranged on the guide rod in a sleeving mode and matched with the guide rod in a sliding mode, and an elastic body arranged between the fixed plate and the sliding plate. And the elastic body is sleeved on the guide rod, and two ends of the elastic body are fixedly connected with the fixed plate and the sliding plate respectively. The valve port and the valve assembly matched with the valve port are designed in the bag opening of the gas collecting bag, so that the sampling requirement is met, the gas collecting bag is not prone to gas leakage, use is convenient, the structure is simple, use of various people can be met, and the pain point of a current 13C urea expiration test is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical auxiliary instruments, and particularly relates to a one-way valve and a gas collecting bag applicable to the mouth of a gas collecting bag. Background Art

[0002] 13 The ¹³C urea breath test is simple, convenient and fast to operate, and the test result is relatively accurate. It is the "gold standard" for Helicobacter pylori detection. Patients have no pain, and the cost is relatively cheaper than gastroscopy. The specific steps are as follows: Before the test, the subject needs to fast for three hours, and at the same time, prepare two gas collecting bags. First, blow one bag full, and require the subject to maintain normal breathing, hold the breath for more than 10 seconds, then exhale the first half of the gas and discard it, and then blow the end gas in the lungs into the gas collecting bag until the bag is full, and immediately cover the gas collecting bag tightly, and immediately take urea 13 carbon reagent. After a half-hour interval, blow the second bag full. The blowing operation method of the second bag is the same as that of the first bag. Then put the gas collecting bag into a special detector, and it can sensitively, accurately and comprehensively detect whether the subject is infected with Helicobacter pylori.

[0003] However, in the above process, if the lid of the gas collecting bag cannot be covered in time and quickly after the subject blows the bag full, the gas collecting bag is very likely to leak air, resulting in difficulty in filling the gas collecting bag. Especially for the elderly with slow movements, it is very difficult to complete the standardized operation, resulting in difficulty in filling the gas collecting bag, and ultimately affecting the test result, which has become the current 13 pain point of the ¹³C urea breath test. Summary of the Utility Model

[0004] Aiming at the defects in the prior art, the purpose of the utility model is to provide a one-way valve and a gas collecting bag applicable to the mouth of a gas collecting bag.

[0005] According to a one-way valve applicable to the mouth of a gas collecting bag provided by the utility model, it includes a valve assembly and a valve port arranged inside the mouth of the gas collecting bag. The valve port has an open state and a closed state. The valve assembly includes a fixing plate fixed on the inner wall of the mouth of the gas collecting bag, a guiding rod with one end fixed on the fixing plate, a sliding plate sleeved on the guiding rod and slidably matched with the guiding rod, and an elastic body arranged between the fixing plate and the sliding plate. The elastic body is sleeved on the guiding rod and its two ends are respectively fixedly connected with the fixing plate and the sliding plate;

[0006] Under natural conditions, under the action of the elastic force of the elastomer, the sliding plate abuts against the valve port, causing the valve port to be in a closed state; when the user holds the mouth of the air collection bag and blows air into the air collection bag, the sliding plate slides along the guide rod away from the valve port under the action of air pressure, thereby causing the valve port to be in an open state. At this time, the elastomer is compressed and shortened. When the user stops blowing air, the elastomer pushes the sliding plate towards the valve port under the action of its own elastic restoring force, causing the valve port to return from the open state to the closed state again.

[0007] Preferably, the elastomer is a plastic spring or an elastic rubber block.

[0008] Preferably, a sealing layer is provided on the surface of the sliding plate facing the valve port.

[0009] Preferably, the sealing layer is a rubber layer.

[0010] Preferably, both ends of the elastomer are adhesively bonded to the fixed plate and the sliding plate respectively.

[0011] Preferably, the valve port is a round port, and one end of the sliding plate facing the valve port is a plane and matches the valve port.

[0012] Preferably, the valve port is integrally connected to the inner wall of the mouth of the air collection bag.

[0013] Preferably, the fixed plate is a hollow structure.

[0014] According to a kind of air collection bag provided by the present utility model, it includes the one-way valve applicable to the mouth part of the air collection bag described above.

[0015] Preferably, the part of the inner part of the mouth of the air collection bag outside the valve port is an installation space, and the installation space is used for installing a lid.

[0016] Compared with the prior art, the present utility model has the following beneficial effects:

[0017] By designing a valve port and a valve assembly cooperating with the valve port inside the mouth of the air collection bag in the present utility model, when the subject blows air, it can push the sliding plate away from the valve port and then can be opened, and after blowing the air collection bag full, it can be automatically closed under the push of the elastomer. The air collection bag is not easy to leak air, is convenient to use, can meet the use of various people, and adopting the sampling structure in the present utility model is beneficial to the accuracy of the inspection result, solving the pain points of the current 13 C urea breath test, and has a simple structure, low price and strong practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] By reading the detailed description of the non-restrictive embodiments with reference to the following drawings, other features, purposes and advantages of the present utility model will become more obvious:

[0019] Figure 1 It is a schematic structural diagram of a gas collection bag;

[0020] Figure 2 It is a schematic structural diagram when the valve port is in a closed state;

[0021] Figure 3 It is a schematic structural diagram when the valve port is in an open state.

[0022] As shown in the figure:

[0023] Valve assembly 1

[0024] Fixed plate 11

[0025] Guide rod 12

[0026] Elastomer 13

[0027] Slider plate 14

[0028] Gas collection bag 2

[0029] Valve port 21 Specific embodiments

[0030] The present utility model will be described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present utility model, but do not limit the present utility model in any form. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several changes and improvements can still be made. These all belong to the protection scope of the present utility model.

[0031] Embodiment 1:

[0032] The present utility model provides a one-way valve applicable to the mouth of a gas collection bag, as Figure 1 shown, including a valve assembly 1 and a valve port 21. Both the valve assembly 1 and the valve port 21 are arranged inside the mouth of the gas collection bag 2. The valve port 21 is closer to the mouth of the bag than the valve assembly 1. The valve port 21 has an open state and a closed state. The valve assembly 1 includes a fixed plate 11, a guide rod 12, an elastomer 13, and a slider plate 14. The fixed plate 11 is fixed on the inner wall of the mouth of the gas collection bag 2. One end of the guide rod 12 is fixed on the fixed plate 11. The slider plate 14 is slidably sleeved on the other end of the guide rod 12. Under the drive of an external force, the slider plate 14 can slide on the guide rod 12. The elastomer 13 is arranged between the fixed plate 11 and the slider plate 14 and is sleeved on the guide rod 12, as Figure 2 , Figure 3As shown, both ends of the elastomer 13 are fixedly connected to the fixed plate 11 and the sliding plate 14 respectively. The two ends of the elastomer 13 can be connected to the fixed plate 11 and the sliding plate 14 by bonding to enhance the firmness of the connection. The elastomer 13 is preferably a plastic spring.

[0033] In the natural state, under the action of the elastic force of the elastomer 13, the sliding plate 14 abuts against the valve port 21, and at this time the valve port 21 is in a closed state, as Figure 2 shown; when the user holds the mouth of the air collection bag 2 and blows air into the air collection bag 2, the sliding plate 14 slides along the guide rod 12 in the direction away from the valve port 21 under the action of air pressure, thereby making the valve port 21 in an open state. At this time, the elastomer 13 is compressed and shortened. When the user stops blowing, the elastomer 13 pushes the sliding plate 14 to slide in the direction close to the valve port 21 under the action of its own elastic restoring force, so that the valve port 21 returns from the open state to the closed state again, preventing the gas entering the air collection bag 2 from flowing out of the bag mouth, solving the current 13 pain point that the air collection bag 2 is prone to air leakage during the C urea breath test.

[0034] In this embodiment, the fixed plate 11 can adopt a hollow structure, and the blown gas enters the air collection bag 2 through the hollow of the fixed plate 11. In actual application, gaps can also be designed on one side or both sides of the fixed plate 11 so that the blown gas enters the air collection bag 2 through the gaps.

[0035] In this embodiment, a sealing layer is provided on the surface of the sliding plate 14 facing the valve port 21. By providing the sealing layer, after the sliding plate 14 abuts against the valve port 21, the sealing layer is hermetically attached to the valve port 21 to form a seal. A sealing layer can also be provided on the valve port 21 so that the two sealing layers abut against each other, resulting in a better sealing effect. The sealing layer is preferably a rubber layer.

[0036] In this embodiment, the valve port 21 is a round port, and one end of the sliding plate 14 facing the valve port 21 is a plane and matches the valve port 21. The sliding plate 14 can be designed as a round plate or other shapes, but the sliding plate 14 must be able to block the valve port 21.

[0037] In this embodiment, the valve port 21 is integrally connected to the inner wall of the mouth of the air collection bag 2. To increase the smoothness of air intake, the axis of the valve port 21 is not parallel to the axis of the bag mouth, that is, the valve port 21 is inclined, as Figure 1 shown. When the air flow enters the air collection bag 2, after a gap appears between the valve port 21 and the sliding plate 14, it can quickly enter the air collection bag 2. Compared with the setting where the axis of the valve port 21 is parallel to the axis of the bag mouth, the resistance is smaller.

[0038] The present utility model also provides an air collecting bag, which includes a one-way valve applicable to the mouth of the air collecting bag. Among them, the part of the valve port 21 inside the mouth of the air collecting bag 2 facing outward is an installation space for installing a lid. By using the lid, the phenomenon of air leakage caused by external pressing during the transportation of the air collecting bag 2 can be avoided, making the stability of the entire air collecting bag 2 for storing gas better and the practicability stronger.

[0039] It should be noted that for the convenience of assembly, the bag body and the bag mouth can adopt a split structure, and the assembly of the two is realized by bonding the bag body to the bag mouth, which is simple, reliable and easy to operate.

[0040] Embodiment 2:

[0041] The difference between this embodiment and Embodiment 1 is that the elastomer 13 adopts an elastic rubber block, and the effects in the present utility model can also be achieved through the elastic deformation of the elastic rubber block.

[0042] The one-way valve at the mouth in the present utility model is for the user to blow in gas and store it smoothly. After stopping blowing, the valve port 21 closes to ensure that the gas does not leak out. The specific working principle is as follows:

[0043] As Figures 1 to 3 shown, the mouth of the air collecting bag adopts a one-way valve design structure and is in a closed state in the natural state. When blowing air, the airflow squeezes the sliding plate 14, causing the sliding plate 14 to slide along the guiding rod 12 away from the valve port 21 under the action of air pressure. A gap appears between the sliding plate 14 and the valve port 21, and then the valve port 21 is in an open state. As Figure 3 shown, the gas enters the air collecting bag 2. When the air collecting bag 2 is filled with gas and stops blowing, without the external gas pressure on the sliding plate 14, due to the elastic restoring force of the spring, the elastic force pushes the sliding plate 14 to slide towards the valve port 21, making the sliding plate 14 seal and fit with the valve port 21, and the valve port 21 returns from the open state to the closed state again. As Figure 2 shown.

[0044] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0045] The specific embodiments of the present utility model have been described above. It should be understood that the present utility model is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present utility model. Without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A one-way valve applicable to the mouth of a gas collecting bag, characterized in that, It includes a valve assembly (1) and a valve port (21) arranged inside the mouth of the air collecting bag (2). The valve port (21) has an open state and a closed state. The valve assembly (1) includes a fixing plate (11) fixed on the inner wall of the mouth of the air collecting bag (2), a guiding rod (12) with one end fixed on the fixing plate (11), a sliding plate (14) sleeved on the guiding rod (12) and slidably matched with the guiding rod (12), and an elastic body (13) arranged between the fixing plate (11) and the sliding plate (14). The elastic body (13) is sleeved on the guiding rod (12) and its two ends are respectively fixedly connected to the fixing plate (11) and the sliding plate (14). In the natural state, under the action of the elastic force of the elastic body (13), the sliding plate (14) abuts against the valve port (21) so that the valve port (21) is in the closed state; when the user holds the mouth of the air collecting bag (2) and blows air into the air collecting bag (2), the sliding plate (14) slides along the guiding rod (12) in the direction away from the valve port (21) under the action of air pressure, so that the valve port (21) is in the open state. At this time, the elastic body (13) is compressed and shortened. When the user stops blowing air, the elastic body (13) pushes the sliding plate (14) to slide in the direction close to the valve port (21) under the action of its own elastic restoring force, so that the valve port (21) returns from the open state to the closed state again.

2. The one-way valve applicable to the mouth part of the gas collecting bag according to claim 1, characterized in that, The elastic body (13) is made of a plastic spring or an elastic rubber block.

3. The one-way valve applicable to the mouth of the gas collecting bag according to claim 2, characterized in that, A sealing layer is arranged on the surface of the sliding plate (14) facing the valve port (21).

4. The one-way valve applicable to the mouth part of the gas collecting bag according to claim 3, characterized in that, The sealing layer is a rubber layer.

5. The one-way valve applicable to the mouth of the airbag according to claim 1, characterized in that, The two ends of the elastic body (13) are respectively bonded to the fixing plate (11) and the sliding plate (14).

6. The one-way valve applicable to the mouth of the gas collecting bag according to claim 1, characterized in that, The valve port (21) is a round port, and one end of the sliding plate (14) facing the valve port (21) is a plane and matches the valve port (21).

7. The one-way valve applicable to the mouth of the gas collecting bag according to claim 1, characterized in that, The valve port (21) is integrally connected to the inner wall of the mouth of the air collecting bag (2).

8. The one-way valve applicable to the mouth of the gas collecting bag according to claim 1, characterized in that, The fixing plate (11) is of a hollow structure.

9. A gas collecting bag, characterized in that, It includes a one-way valve applicable to the mouth of the air collecting bag according to any one of claims 1 to 8.

10. The air collecting bag according to claim 9, characterized in that, The part outside the valve port (21) inside the mouth of the air collecting bag (2) is an installation space for installing a lid.

Images