Carbon 13 expiration test gas collection bag

Abstract

The utility model discloses a carbon 13 expiration test air collecting bag which comprises a bag body and an air blowing pipe, one end of the air blowing pipe is communicated with the inside of the bag body, and the other end of the air blowing pipe is provided with a cover cap. An exhaust pipe is further arranged on the bag body, one end of the exhaust pipe is communicated with the interior of the bag body, the other end of the exhaust pipe is communicated with the atmosphere, a one-way exhaust assembly is arranged in the exhaust pipe, and when the air pressure in the bag body is larger than a threshold value, the one-way exhaust assembly is converted into an open state from a closed state to form exhaust of the bag body. The exhaust pipe is arranged on the bag body of the air collection bag for the carbon 13 expiration test, the one-way exhaust assembly is in a normally-closed state, when the air pressure in the bag body is larger than a threshold value, the one-way exhaust assembly is opened to form one-way exhaust of the bag body, and the situation that the air pressure in the bag body is too large, and smooth proceeding of the test is affected is avoided.

Description

Technical Field

[0001] This utility model relates to the field of gas collection technology, and in particular to a carbon-13 exhalation test gas collection bag. Background Technology

[0002] The carbon-13 breath test is a medical diagnostic method used to detect whether a person is infected with Helicobacter pylori. In the test, the patient orally ingests a urea capsule labeled with the stable isotope C13. If Helicobacter pylori is present in the stomach, these bacteria secrete urease to break down the urea, producing carbon dioxide labeled with C13. This carbon dioxide enters the lungs through the bloodstream and is eventually exhaled. By detecting the presence of C13-labeled carbon dioxide in the exhaled breath, it can be determined whether the patient is infected with Helicobacter pylori.

[0003] In the carbon-13 breath test, the test subject's exhaled air is collected through a gas collection bag and then analyzed by a machine. A typical gas collection bag has a blowing tube; the test subject blows air into the bag through the tube, causing the bag to inflate and close the tube to collect the exhaled air for testing. During machine testing, the blowing tube from the gas collection bag needs to be fitted onto the machine's test tube. However, due to some gas collection bags being over-inflated or having excessive internal pressure, the blowing tube may not fit properly or may fall off, affecting the test's success. Utility Model Content

[0004] This invention addresses the problem in existing technologies where the gas collection bag is over-inflated or the internal air pressure is too high, affecting the gas collection bag sleeve. It proposes a carbon-13 exhalation test gas collection bag with an exhaust pipe installed on the gas collection bag. The exhaust pipe is used to open when the internal air pressure of the gas collection bag reaches a certain threshold, thus preventing the internal air pressure of the gas collection bag from becoming too high.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A carbon-13 breath test gas collection bag includes a bag body and an inhalation tube. One end of the inhalation tube is connected to the interior of the bag body, and the other end of the inhalation tube is fitted with a cap. An exhaust tube is also provided on the bag body. One end of the exhaust tube is connected to the interior of the bag body, and the other end is connected to the atmosphere. A one-way exhaust component is provided inside the exhaust tube. When the internal air pressure of the bag body exceeds a threshold, the one-way exhaust component switches from a closed state to an open state, thus releasing air from the bag.

[0007] Preferably, the one-way exhaust assembly includes a second fixed seat, a flow-limiting block, a second elastic member, and a third fixed seat. The third fixed seat is provided with a second guide hole. The side of the second fixed seat away from the third fixed seat has a round-bottomed groove. The bottom of the round-bottomed groove is provided with the third guide hole. The flow-limiting block is located inside the round-bottomed groove. One end of the second elastic member is fixedly connected to the flow-limiting block, and the other end of the second elastic member passes through the third guide hole and is fixedly connected to the third fixed seat. The second elastic member uses its contraction potential energy to make the flow-limiting block stay in the second guide hole of the third fixed seat to achieve the sealing of the second guide hole by the flow-limiting block, forming the closed state of the one-way exhaust assembly.

[0008] Preferably, the current limiting block is a sphere.

[0009] Preferably, the exhaust end of the exhaust pipe is provided with a mesh baffle plate.

[0010] Preferably, a limiting sleeve is provided on the outside of the air blowing pipe, and an external thread is provided on the outside of the air blowing pipe. The external thread extends from the air inlet end of the air blowing pipe to the limiting sleeve. The cap is provided with an internal thread that matches the external thread. The cap and the air blowing pipe are threadedly connected to form a seal of the bag body.

[0011] Preferably, the air blowing pipe is equipped with a one-way air intake component, and the structure of the one-way air intake component is the same as that of the one-way exhaust component.

[0012] Preferably, the air blowing pipe is internally provided with a one-way air intake assembly, which includes a sliding plug, a first fixed seat, and a first elastic member. The sliding plug matches the pipe hole of the air blowing pipe and is axially slidably connected to the air blowing pipe. The first fixed seat is fixedly connected to the inside of the air blowing pipe. An air guide pipe is provided in the middle of the first fixed seat, passing through the first fixed seat. A sealing plate and multiple first guide holes are provided on the side of the sliding plug near the first fixed seat. The position of the sealing plate corresponds to the position of the air guide pipe. One end of the first elastic member is fixedly connected to the first fixed seat, and the other end of the first elastic member is fixedly connected to the sliding plug. The first elastic member uses its contraction potential energy to make the sealing plate on the sliding plug press against the air guide pipe to achieve the sealing of the air guide pipe by the sealing plate, forming the closed state of the one-way air intake assembly.

[0013] Preferably, the air inlet end of the exhaust pipe is connected to the air blowing pipe, and the connection point between the exhaust pipe and the air blowing pipe is located between the sliding plug of the air blowing pipe and the bag body.

[0014] Preferably, the air inlet end of the exhaust pipe is connected to the bag body.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] The gas collection bag for this carbon-13 exhalation test is equipped with an exhaust pipe, which has a one-way exhaust component. The one-way exhaust component is normally closed. When the internal air pressure of the bag exceeds the threshold, the one-way exhaust component opens to allow one-way exhaust from the bag, thus preventing excessive internal air pressure from affecting the smooth progress of the test.

[0017] The gas collection bag for the carbon-13 breath test is equipped with a one-way air intake component on the blowing tube. After the test subject blows, the one-way air intake component and the cap provide double spill prevention to effectively prevent gas from overflowing from the inside of the bag. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the gas collection bag used in the carbon-13 exhalation test (Example 1);

[0019] Figure 2 This is a schematic diagram of the structure of the gas collection bag at point A in this carbon-13 exhalation test;

[0020] Figure 3 This is a schematic diagram of the cross-section of the gas collection bag at point B in this carbon-13 exhalation test;

[0021] Figure 4 This is a schematic diagram of the cross-section of the gas collection bag at point C in this carbon-13 exhalation test;

[0022] Figure 5 This is a schematic diagram of the gas collection bag used in the carbon-13 exhalation test (Example 2).

[0023] Figure 6 This is a schematic diagram of the gas collection bag used in the carbon-13 exhalation test (Example 3).

[0024] In the diagram: 1. Bag body; 2. First connecting seat; 3. Air blowing pipe; 4. Limiting sleeve; 5. Cap; 6. One-way air intake assembly; 7. One-way air exhaust assembly; 8. Exhaust pipe; 9. Isolation plate; 10. Second connecting seat; 61. Sealing plate; 62. First guide hole; 63. Sliding plug; 64. First fixing seat; 65. Air guide pipe; 66. First elastic element; 71. Second fixing seat; 72. Flow limiting block; 73. Second elastic element; 74. Third fixing seat; 75. Second guide hole; 76. Third guide hole. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Example 1

[0027] Reference Figure 1-2A carbon-13 breath test gas collection bag includes a bag body 1, an inhalation tube 3, and an exhaust tube 8. The bag body 1 is a plastic bag, and the inhalation tube 3 and exhaust tube 8 are plastic fittings. A first connecting seat 2, an annular plastic component, is provided at one end of the inhalation tube 3. The inhalation tube 3 and the first connecting seat 2 are integrally formed and bonded to the bag body 1. A limiting sleeve 4 is provided on the outside of the other end of the inhalation tube 3. External threads are provided on the outside of the inhalation tube 3, extending from the air inlet end of the inhalation tube 3 to the limiting sleeve 4. The gas collection bag is equipped with a cap 5, which has internal threads matching the external threads. The cap 5 is threadedly connected to the inhalation tube 3 to form a seal at the air inlet end of the bag body 1.

[0028] Furthermore, the inside of the air blowing pipe 3 is provided with a one-way air intake component 6, which is used to realize one-way air intake of the air blowing pipe 3 and prevent the gas blown into the bag body 1 from overflowing.

[0029] For details, please refer to Figure 2 and Figure 3 The one-way air intake assembly 6 includes a sliding plug 63, a first fixed seat 64, and a first elastic element 66. The sliding plug 63 matches the pipe hole of the air blowing pipe 3 and can slide axially inside the air blowing pipe 3. The first fixed seat 64 is fixedly connected to the inside of the air blowing pipe 3, and is located near the air intake end of the air blowing pipe 3. The sliding plug 63 is located near the exhaust end of the air blowing pipe 3. An air guide pipe 65 is provided in the middle of the first fixed seat 64, and one end of the air guide pipe 65 extends through the first fixed seat 64 towards the sliding plug 63. A sealing plate 61 and a plurality of first guide holes 62 are provided on the side of the sliding plug 63 near the first fixed seat 64. The position of the sealing plate 61 corresponds to the position of the air guide pipe 65. The first elastic element 66 is a spring. One end of the first elastic element 66 is fixedly connected to the first fixed base 64, and the other end of the first elastic element 66 is fixedly connected to the sliding plug 63. The first elastic element 66 has contraction potential energy. The contraction potential energy of the first elastic element 66 causes the sealing plate 61 on the sliding plug 63 to press against the air guide pipe 65, thereby sealing the air guide pipe 65 with the sealing plate 61, and thus forming the closed state of the one-way air intake assembly 6.

[0030] When the tester blows air, the cap 5 is unscrewed, and gas enters the air guide tube 65 from the air inlet end of the air blowing tube 3. The air pressure pushes the sealing plate 61, stretching the first elastic element 66, causing the sealing plate 61 to move away from the air guide tube 65 and release the seal on the air guide tube 65. Gas can then enter the interior of the bag body 1 through the first guide hole 62. When the blowing action is completed, the first elastic element 66 contracts, and the sealing plate 61 returns to the end of the air guide tube 65, sealing the air guide tube 65 and preventing gas from leaking out of the bag body 1.

[0031] Furthermore, the air inlet end of the exhaust pipe 8 is connected to the air blowing pipe 3, and the connection point between the exhaust pipe 8 and the air blowing pipe 3 is located between the sliding plug 63 of the air blowing pipe 3 and the bag body 1.

[0032] For details, please refer to Figure 2 and Figure 4 The air inlet end of the exhaust pipe 8 is connected to the interior of the bag body 1, and the other end of the exhaust pipe 8 is connected to the atmosphere. The exhaust pipe 8 is equipped with a one-way exhaust component 7. When the air pressure inside the bag body 1 is greater than a threshold, the one-way exhaust component 7 switches from the closed state to the open state to exhaust the bag body 1, thus preventing the air pressure inside the bag body 1 from being too high and affecting the smooth progress of the test.

[0033] Specifically, the one-way exhaust assembly 7 includes a second fixing seat 71, a flow-limiting block 72, a second elastic element 73, and a third fixing seat 74. The second fixing seat 71 and the third fixing seat 74 are fixedly connected to the inner wall of the exhaust pipe 8. The second fixing seat 71 is located near the intake end of the exhaust pipe 8, and the third fixing seat 74 is located near the exhaust end of the exhaust pipe 8. The third fixing seat 74 is provided with a second guide hole 75. The side of the second fixing seat 71 away from the third fixing seat 74 has a round-bottomed groove, and the bottom of the round-bottomed groove is provided with a third guide hole 76. The flow-limiting block 72 is located inside the round-bottomed groove and is used to seal the third guide hole 76. The second elastic element 73 is a spring. One end of the second elastic element 73 is fixedly connected to the flow-limiting block 72, and the other end of the second elastic element 73 passes through the third guide hole 76 and is fixedly connected to the third fixing seat 74. The second elastic element 73 has contraction potential energy. The second elastic element 73 causes the flow limiting block 72 to remain in the second guide hole 75 of the third fixed seat 74 through the contraction potential energy, thereby achieving the sealing of the second guide hole 75 by the flow limiting block 72 and forming the closed state of the one-way exhaust assembly 7.

[0034] When the test subject exhales, the exhaled air enters the bag 1. When the air pressure inside the bag 1 does not reach the threshold, the contraction potential energy of the second elastic element 73 causes the flow limiting block 72 to remain in the second guide hole 75 of the third fixing seat 74, thus sealing the second guide hole 75 with the flow limiting block 72, and the one-way exhaust assembly 7 is in the closed state. When the air pressure inside the bag 1 reaches the threshold, which means that the air pressure inside the bag 1 can overcome the contraction potential energy of the second elastic element 73 and push the flow limiting block 72 away from the second guide hole 75, the one-way exhaust assembly 7 is in the open state, and the air inside the bag 1 can be discharged from the bag 1 through the third guide hole 76 and the second guide hole 75, preventing excessive air or excessive air pressure inside the bag 1, and facilitating the connection of the blowing tube 3 to the test tube.

[0035] In this embodiment, the flow limiting block 72 is a sphere, and the diameter of the flow limiting block 72 is larger than the inner diameter of the second flow guiding hole 75, so as to maintain the effective sealing of the flow limiting block 72 to the second flow guiding hole 75.

[0036] Furthermore, a mesh-like isolation plate 9 is provided at the exhaust end of the exhaust pipe 8, which is used to isolate the exhaust pipe 8 from the outside.

[0037] Example 2

[0038] This embodiment proposes a carbon-13 breath test gas collection bag, including a bag body 1, an inhalation tube 3, and an exhaust tube 8. The exhaust tube 8 is internally equipped with a one-way exhaust component 7. When the internal air pressure of the bag body 1 exceeds a threshold, the one-way exhaust component 7 switches from a closed state to an open state, allowing exhaust from the bag body 1 and preventing excessive internal air pressure from affecting the smooth conduct of the test. (Reference) Figure 5 Unlike Embodiment 1, in this embodiment, the one-way air intake assembly 6 of the air blowing pipe 3 has the same structure as the one-way exhaust assembly 7 inside the exhaust pipe 8, and the size of the one-way air intake assembly 6 is adapted to the size of the inner wall of the air blowing pipe 3. The one-way air intake assembly 6 is used for one-way air intake of the air blowing pipe 3.

[0039] Example 3

[0040] refer to Figure 6 In this embodiment, the air inlet end of the exhaust pipe 8 is directly connected to the bag body 1. The air inlet end of the exhaust pipe 8 is provided with a second connecting seat 10, which is a plastic ring. All exhaust pipes 8 are plastic pipes. The second connecting seat 10 and the exhaust pipe 8 are integrally formed. The bag body 1 is a plastic bag body. The second connecting seat 10 is bonded to the bag body 1.

[0041] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A carbon-13 breath test gas collection bag, comprising a bag body and a blowing tube, wherein one end of the blowing tube communicates with the interior of the bag body, and the other end of the blowing tube is provided with a cap, characterized in that, It also includes an exhaust pipe, one end of which is connected to the inside of the bag and the other end of which is connected to the atmosphere. The exhaust pipe is equipped with a one-way exhaust component, which switches from a closed state to an open state when the air pressure inside the bag is greater than a threshold, thus venting the bag.

2. The carbon-13 exhalation test gas collection bag according to claim 1, characterized in that, The one-way exhaust assembly includes a second fixed base, a flow-limiting block, a second elastic element, and a third fixed base. The third fixed base is provided with a second guide hole. The side of the second fixed base away from the third fixed base has a round-bottomed groove. The bottom of the round-bottomed groove is provided with the third guide hole. The flow-limiting block is located inside the round-bottomed groove. One end of the second elastic element is fixedly connected to the flow-limiting block, and the other end of the second elastic element passes through the third guide hole and is fixedly connected to the third fixed base. The second elastic element uses its contraction potential energy to make the flow-limiting block stay in the second guide hole of the third fixed base to achieve the sealing of the second guide hole by the flow-limiting block, forming the closed state of the one-way exhaust assembly.

3. The carbon-13 exhalation test gas collection bag according to claim 2, characterized in that, The current limiting block is a sphere.

4. The carbon-13 exhalation test gas collection bag according to claim 2, characterized in that, The exhaust end of the exhaust pipe is provided with a mesh-like isolation plate.

5. The carbon-13 exhalation test gas collection bag according to claim 2, characterized in that, The air blowing tube is provided with a limiting sleeve on the outside, and the air blowing tube is provided with an external thread on the outside. The external thread extends from the air inlet end of the air blowing tube to the limiting sleeve. The cap is provided with an internal thread that matches the external thread. The cap and the air blowing tube are threadedly connected to form a seal of the bag body.

6. The carbon-13 breath test gas collection bag according to claim 5, characterized in that, The air blowing pipe is equipped with a one-way air intake component, and the structure of the one-way air intake component is the same as that of the one-way exhaust component.

7. The carbon-13 exhalation test gas collection bag according to claim 5, characterized in that, The air blowing pipe is internally equipped with a one-way air intake assembly, which includes a sliding plug, a first fixed seat, and a first elastic element. The sliding plug matches the pipe hole of the air blowing pipe and is axially slidably connected to the air blowing pipe. The first fixed seat is fixedly connected to the inside of the air blowing pipe. An air guide pipe is provided through the middle of the first fixed seat. A sealing plate and multiple first guide holes are provided on the side of the sliding plug near the first fixed seat. The position of the sealing plate corresponds to the position of the air guide pipe. One end of the first elastic element is fixedly connected to the first fixed seat, and the other end of the first elastic element is fixedly connected to the sliding plug. The first elastic element uses its contraction potential energy to make the sealing plate on the sliding plug press against the air guide pipe to achieve the sealing of the air guide pipe by the sealing plate, forming the closed state of the one-way air intake assembly.

8. The carbon-13 breath test gas collection bag according to any one of claims 1-7, characterized in that, The air inlet end of the exhaust pipe is connected to the air blowing pipe, and the connection point between the exhaust pipe and the air blowing pipe is located between the one-way air intake assembly and the bag body.

9. The carbon-13 breath test gas collection bag according to any one of claims 1-7, characterized in that, The air inlet end of the exhaust pipe is connected to the bag body.

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