A dual-lumen endotracheal cannula with carbon dioxide monitoring function

Abstract

This utility model discloses a dual-lumen endotracheal tube with carbon dioxide monitoring function, belonging to the field of medical device technology. It includes a main bronchus and a secondary bronchus located beside the main bronchus. This utility model features a detection chamber at the end of the main bronchus, which is internally connected to the main bronchus lumen. A carbon dioxide concentration sensor is installed inside the detection chamber. A first valve, which acts as a one-way valve, is located at the connection point between the detection chamber and the main bronchus lumen. When used in conjunction with a display screen, this allows for direct detection of carbon dioxide concentration in exhaled breath during endotracheal tube use, improving the functionality of the endotracheal tube. Furthermore, gas from inside the main bronchus lumen does not enter the detection chamber, improving detection accuracy. Additionally, a second valve, which is also internally connected to the detection chamber, provides some barrier against sputum, effectively preventing blockage of the detection chamber.

Description

Technical Field

[0001] This utility model relates to a double-lumen endotracheal tube, and more particularly to a double-lumen endotracheal tube with carbon dioxide monitoring function, belonging to the field of medical device technology. Background Technology

[0002] Double-lumen endotracheal intubation is a special type of endotracheal tube mainly used in thoracic surgery and some special respiratory management situations. Its structural feature is that it has two cavities, which lead to the left and right main bronchi respectively. It is usually made of medical materials such as polyvinyl chloride, and its shape is designed to conform to the anatomical structure of the human trachea and bronchi.

[0003] In the prior art, such as the utility model application with application number 202323252470.0, a double-lumen endotracheal tube is disclosed. In order to solve the problem that the suctioning operation during surgery requires changing the corresponding suction tubes on the left and right sides to perform suctioning operations on the left and right lungs separately, which is a complicated operation and affects the progress of the operation, a first receiving tube and a second receiving tube are respectively set in the lumen of the main bronchus and the lumen of the accessory bronchus. In use, the first suction tube and the second suction tube can be inserted into the first receiving tube and the second receiving tube respectively, avoiding the need to repeatedly change the corresponding suction tubes during the suctioning operation during surgery.

[0004] The above-mentioned applications still have shortcomings:

[0005] During the use of endotracheal intubation, a special measuring instrument is required to detect the carbon dioxide concentration, which is inconvenient to use. In addition, during the detection of exhaled air, some residual air inside the endotracheal intubation tube will be discharged along with it, which will lead to a lower carbon dioxide concentration value and affect the measurement accuracy.

[0006] To address this issue, a dual-lumen endotracheal cannula with carbon dioxide monitoring function was designed. Utility Model Content

[0007] The main purpose of this invention is to provide a dual-lumen endotracheal tube with carbon dioxide monitoring function to solve the problems mentioned in the background art.

[0008] The objective of this utility model can be achieved by adopting the following technical solution:

[0009] A dual-lumen endotracheal cannula with carbon dioxide monitoring function includes a main bronchus, a secondary bronchus located on the side of the main bronchus, and connectors installed at the ends of the main bronchus and the secondary bronchus. The main bronchus has a main bronchus lumen inside, and a detection chamber is opened at the bottom of the main bronchus and on the side of the main bronchus lumen. A guide port is opened between the detection chamber and the main bronchus lumen. First valves are evenly arranged circumferentially inside the guide port, and the first valves are fitted together in a conical shape and inclined towards the inside of the main bronchus lumen. A carbon dioxide concentration sensor is installed inside the detection chamber. A connecting wire is installed at the end of the carbon dioxide concentration sensor. The connecting wire slides inside the main bronchus and slides out from the side of the connector. A display screen is installed at the outer end of the connecting wire. A positioning mechanism for fixing the position of the connecting wire is provided on the connector.

[0010] Preferably, a second valve is uniformly arranged circumferentially at the front end of the detection cavity, and multiple sets of second valves are fitted together to form a circle.

[0011] Preferably, the connecting line is provided with scale lines evenly distributed along the length direction on the outer side of one end of the main branch pipe.

[0012] Preferably, the outer surfaces of both the main branch pipe and the secondary branch pipe are coated with a lubricating coating, and the lubricating coating is applied to the surfaces of the main branch pipe and the secondary branch pipe by spraying.

[0013] Preferably, the positioning mechanism includes a mounting cavity, a compression plate, a compression spring, and a pull rod. The mounting cavity is located inside the connector, and the connecting wire passes horizontally through the inside of the mounting cavity. The mounting cavity is equipped with a compression plate, the top of which is in contact with the surface of the connecting wire. A compression spring is provided between the bottom of the compression plate and the inner bottom of the mounting cavity. A pull rod is fixed to the bottom of the mounting cavity, and the bottom of the pull rod extends to the outside of the connector.

[0014] Preferably, a pull ring is fixedly installed at the bottom of the pull rod.

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

[0016] 1. This utility model features a detection chamber at the end of the main bronchus tube, which is internally connected to the main bronchus tube. A carbon dioxide concentration sensor is installed inside the detection chamber, and a first valve is provided at the connection point between the detection chamber and the main bronchus tube. This first valve can act as a one-way valve. When used in conjunction with a display screen, it allows for direct detection of carbon dioxide concentration in exhaled breath during bronchial intubation, improving the functionality of bronchial intubation. Furthermore, gas inside the main bronchus tube will not enter the detection chamber, improving detection accuracy. Additionally, a second valve is provided at the front end of the detection chamber, which can effectively block sputum and prevent the detection chamber from being blocked.

[0017] 2. This utility model has a positioning mechanism consisting of an installation cavity, a compression plate, a compression spring, and a pull rod at the connector. This mechanism can position the connecting wire during use and control the position of the carbon dioxide concentration sensor. When the detection cavity is blocked by sputum, the carbon dioxide concentration sensor can be extended to ensure continuous monitoring of the carbon dioxide concentration sensor, making it more practical. Attached Figure Description

[0018] Figure 1 This is the front view of the present invention;

[0019] Figure 2 This is a structural diagram of the branch pipe end of this utility model;

[0020] Figure 3 For the present utility model Figure 1 Enlarged view of point A in the middle;

[0021] Figure 4 For the present utility model Figure 1 Enlarged view of section B in the middle.

[0022] In the diagram: 1. Main branch pipe; 2. Secondary branch pipe; 3. Connector; 4. Main branch pipe lumen; 5. Detection chamber; 6. Conductor port; 7. First valve; 8. Second valve; 9. Carbon dioxide concentration sensor; 10. Connecting wire; 11. Display screen;

[0023] 12. Positioning mechanism; 1201. Mounting cavity; 1202. Extrusion plate; 1203. Extrusion spring; 1204. Pull rod. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0025] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0026] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0029] Example 1

[0030] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this embodiment proposes a dual-lumen endotracheal cannula with carbon dioxide monitoring function, including a main bronchus 1, a secondary bronchus 2 located on the side of the main bronchus 1, and a connector 3 installed at the ends of the main bronchus 1 and the secondary bronchus 2. The main bronchus 1 has a main bronchus cavity 4 inside. A detection cavity 5 is opened at the bottom end of the main bronchus 1 and on the side of the main bronchus cavity 4. A guide port 6 is opened between the detection cavity 5 and the main bronchus cavity 4. First valves 7 are evenly arranged circumferentially inside the guide port 6, and the first valves 7 are attached to each other in a conical shape and inclined towards the inside of the main bronchus cavity 4. A carbon dioxide concentration sensor 9 is installed inside the detection cavity 5. A connecting wire 10 is installed at the end of the carbon dioxide concentration sensor 9. The connecting wire 10 slides inside the main bronchus 1 and slides out from the side of the connector 3. A display screen 11 is provided at the outer end of the connecting wire 10. A positioning mechanism 12 for fixing the position of the connecting wire 10 is provided on the connector 3.

[0031] When a double-lumen endotracheal tube is inserted into a patient, during the inhalation process, the external cuff introduces gas into the main bronchus 1 and then into the patient's lungs. Because the first valve 7, with its conical design inside the inlet 6, functions like a one-way valve, it obstructs the inhalation, preventing gas from entering the detection chamber 5. When the patient exhales, the gas not only exits from the main bronchus 1 but also passes through the detection chamber 5 before re-entering the main bronchus 1. The carbon dioxide concentration sensor 9 inside the detection chamber 5 directly detects the carbon dioxide concentration in the gas. The test results are then transmitted to the processor inside the external display screen 11 for A / D conversion, and displayed on the display screen 11 for direct observation. In addition, during the carbon dioxide concentration detection process, the exhaust gas is detected directly, and the gas in the main trachea 1 that has not entered the lungs is not detected, thus ensuring the accuracy of the detection. If the detection chamber 5 is blocked, no data will be displayed on the display screen 11. The positioning state of the connecting cable 10 will be released, and the connecting cable 10 will be released, allowing the carbon dioxide concentration sensor 9 to extend from the inside of the detection chamber 5 to ensure normal concentration detection.

[0032] Example 2

[0033] The solution in Example 1 will be further described below with reference to its specific working method.

[0034] like Figure 3 As shown, in a preferred embodiment, based on the above method, the front end of the detection cavity 5 is further provided with a second valve 8 evenly distributed circumferentially, and multiple sets of second valves 8 are fitted together to form a circle.

[0035] The presence of the second valve 8 can provide some obstruction at the end of the detection chamber 5, preventing sputum from entering the interior of the detection chamber 5.

[0036] like Figure 1 As shown, in a preferred embodiment, based on the above method, the connecting line 10 is further provided with scale lines evenly distributed along the length direction on the outer side of one end of the main branch pipe 1.

[0037] The release length of the connecting line 10 can be determined by the scale lines on the connecting line 10.

[0038] like Figure 1 As shown, in a preferred embodiment, based on the above method, both the outer surfaces of the main branch pipe 1 and the secondary branch pipe 2 are coated with a lubricating coating, and the lubricating coating is applied to the surfaces of the main branch pipe 1 and the secondary branch pipe 2 by spraying.

[0039] The use of a lubricating coating can reduce damage to the trachea and improve its practicality.

[0040] like Figure 4 As shown, in a preferred embodiment, based on the above method, the positioning mechanism 12 further includes a mounting cavity 1201, a compression plate 1202, a compression spring 1203, and a pull rod 1204. The mounting cavity 1201 is opened inside the connector 3, and the connecting line 10 passes horizontally through the inside of the mounting cavity 1201. The compression plate 1202 is provided inside the mounting cavity 1201, and the top of the compression plate 1202 is in contact with the surface of the connecting line 10. The compression spring 1203 is provided between the bottom of the compression plate 1202 and the inner bottom of the mounting cavity 1201. The pull rod 1204 is fixed to the bottom of the mounting cavity 1201, and the bottom of the pull rod 1204 extends to the outside of the connector 3.

[0041] When the positioning of the connecting line 10 is released, the pull rod 1204 drives the compression plate 1202 downward, the compression plate 1202 separates from the connecting line 10, and the compression spring 1203 is compressed, releasing the connecting line 10. After the connecting line 10 is released to a certain length, the carbon dioxide concentration sensor 9 extends out of the detection chamber 5. Then the pull rod 1204 is released, the compression spring 1203 automatically resets, and the compression plate 1202 compresses and positions the connecting line 10.

[0042] like Figure 4 As shown, in a preferred embodiment, based on the above method, a pull ring is further fixedly installed at the bottom of the pull rod 1204.

[0043] The pull ring makes it easy to pull the lever 1204 during use, making it convenient to use.

[0044] Example 3

[0045] The solutions in Embodiments 1 and 2 will be further described below with reference to their specific working methods.

[0046] When a double-lumen endotracheal tube is inserted into a patient, during the inhalation process, the external cuff introduces gas into the main bronchus 1 and then into the patient's lungs. Because the first valve 7, with its conical design inside the inlet 6, functions like a one-way valve, it obstructs the inhalation, preventing gas from entering the detection chamber 5. When the patient exhales, the gas not only exits from the main bronchus 1 but also passes through the detection chamber 5 before re-entering the main bronchus 1. The carbon dioxide concentration sensor 9 inside the detection chamber 5 directly detects the carbon dioxide concentration in the gas and transmits the result to the processor inside the external display 11 for A / D conversion. The result is then transmitted via... The display screen 11 displays the data for direct observation. Furthermore, during carbon dioxide concentration detection, the system directly detects the exhaled gas, excluding gas from the main trachea 1 that has not entered the lungs, ensuring detection accuracy. If the detection chamber 5 is blocked, the display screen 11 will not show data. The pull rod 1204 will then pull the compression plate 1202 downwards, separating it from the connecting line 10 and compressing the compression spring 1203, releasing the connecting line 10. Once the connecting line 10 has been released to a certain length, the carbon dioxide concentration sensor 9 will extend from the detection chamber 5. The pull rod 1204 will then be released, the compression spring 1203 will automatically reset, and the compression plate 1202 will compress and position the connecting line 10.

[0047] The above description is only a further embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope disclosed by the present utility model, based on the technical solution and concept of the present utility model, shall fall within the protection scope of the present utility model.

Claims

1. A double-lumen bronchial cannula with carbon dioxide monitoring function, comprising a main branch (1), a side branch (2) located at the side of the main branch (1), a joint (3) installed at the end of the main branch (1) and the side branch (2), characterized in that: The main branch pipe (1) has a main branch pipe cavity (4) inside. A detection cavity (5) is opened at the bottom end of the main branch pipe (1) and on the side of the main branch pipe cavity (4). A guide port (6) is opened between the detection cavity (5) and the main branch pipe cavity (4). The first valve (7) is evenly arranged in the circumferential direction inside the guide port (6). The first valves (7) are attached to each other in a cone shape and tilted towards the inside of the main branch pipe cavity (4). A carbon dioxide concentration sensor (9) is provided inside the detection cavity (5). A connecting wire (10) is installed at the end of the carbon dioxide concentration sensor (9). The connecting wire (10) slides inside the main branch pipe (1) and slides out from the side of the connector (3). A display screen (11) is provided at the outer end of the connecting wire (10). A positioning mechanism (12) for fixing the position of the connecting wire (10) is provided on the connector (3).

2. The double-lumen bronchial cannula with carbon dioxide monitoring function according to claim 1, characterized in that: The front end of the detection cavity (5) is uniformly provided with a second valve (8) along the circumference, and multiple sets of second valves (8) are attached to each other to form a circle.

3. The double-lumen bronchial tube with carbon dioxide monitoring function according to claim 1, characterized in that: The connecting line (10) is located on the outside of the main branch pipe (1) and is uniformly marked with scale lines along its length.

4. The double-lumen bronchial tube with carbon dioxide monitoring function according to claim 1, characterized in that: Both the main branch pipe (1) and the secondary branch pipe (2) are coated with a lubricating coating, and the lubricating coating is applied to the surface of the main branch pipe (1) and the secondary branch pipe (2) by spraying.

5. The double-lumen bronchial tube with carbon dioxide monitoring function according to claim 1, characterized in that: The positioning mechanism (12) includes a mounting cavity (1201), a pressing plate (1202), a pressing spring (1203), and a pull rod (1204). The mounting cavity (1201) is located inside the connector (3). The connecting line (10) passes horizontally through the inside of the mounting cavity (1201). The mounting cavity (1201) is provided with a pressing plate (1202). The top of the pressing plate (1202) is in contact with the surface of the connecting line (10). The pressing spring (1203) is provided between the bottom of the pressing plate (1202) and the bottom of the mounting cavity (1201). The bottom of the mounting cavity (1201) is fixed with a pull rod (1204), and the bottom of the pull rod (1204) extends to the outside of the connector (3).

6. A dual-lumen endotracheal cannula with carbon dioxide monitoring function according to claim 5, characterized in that: A pull ring is fixedly installed at the bottom of the pull rod (1204).

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