Nasal catheter for assisting end-expiratory carbon dioxide monitoring

Abstract

The utility model discloses a nasal catheter for assisting end-expiratory carbon dioxide monitoring, which relates to the field of nasal catheters and comprises an oxygen source joint, a carbon dioxide joint and a connecting tube, and two connectors are mounted on the connecting tube. By arranging the dismounting assembly, when the nasal plug is blocked and needs to be replaced, a worker can rotate a limiting sleeve, so that the limiting sleeve moves and does not shield a pressing rod any more, at the moment, a spring is stretched to push a movable block to move, then a clamping column is driven to move, the clamping column is moved out of a clamping hole, limiting of the nasal plug is relieved, and then the nasal plug is moved upwards; when the nose plug is installed, the nose plug only needs to be inserted into the connector, the clamping holes are aligned with the clamping columns, then the pressing rods on the two sides are pressed, the movable blocks drive the clamping columns to move, the nose plug can be clamped and limited after the clamping columns are clamped into the clamping holes, and therefore installation of the nose plug can be completed; in this way, the nose plug can be quickly disassembled, assembled and replaced, and the operation process is simple and convenient.

Description

Technical Field

[0001] This utility model relates to the field of nasal cannulas, specifically a nasal cannulas for assisting in end-tidal carbon dioxide monitoring. Background Technology

[0002] A nasal cannula that monitors end-tidal carbon dioxide is a medical device that not only delivers oxygen but also collects and monitors end-tidal carbon dioxide (PETCO2). Nasal cannulas are mainly used to monitor a patient's respiratory function and the degree of respiratory failure, and are particularly suitable for patients who require respiratory support, such as patients with chronic obstructive pulmonary disease (COPD), asthma, and respiratory failure.

[0003] According to Chinese Patent No. CN219022780U, a nasal oxygen tube capable of monitoring end-tidal carbon dioxide is disclosed. This nasal oxygen tube, which can monitor end-tidal carbon dioxide, achieves the simultaneous monitoring of end-tidal carbon dioxide levels by placing the core tube inside the double-ended nasal tube and setting a bent connector at the outer end of the two core tubes. The two core tubes are hidden inside the double-ended nasal tube, which improves both comfort and monitoring accuracy.

[0004] Regarding the aforementioned patent content, since the nasal cannula has two nasal plugs, when using the nasal cannula, the nasal plugs are inserted into the nostrils to facilitate oxygen supply and carbon dioxide collection. However, there may be secretions inside the nostrils. When secretions enter the nasal plugs and cause blockage while the cannula is not blocked, the nasal plugs need to be removed from the nasal cavity for unblocking or replacement. The unblocking process is quite troublesome. At the same time, since the nasal plugs are directly connected to the cannula, it is difficult to quickly replace the nasal plugs, thus affecting the effectiveness of the nasal cannula. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide a nasal cannula for assisting end-tidal carbon dioxide monitoring, so as to solve the technical problem that it is difficult to disassemble and replace when the nose is blocked.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a nasal cannula for assisting end-tidal carbon dioxide monitoring, comprising an oxygen source connector, a carbon dioxide connector, and a connecting tube. Two connectors are installed on the connecting tube, and nasal plugs are inserted into the interior of each connector. The interior of each connector is also provided with a disassembly and assembly assembly, which includes grooves on both sides of the interior of the connector, a limiting sleeve fitted onto the outer wall of the connector, and locking holes on the lower sides of the two nasal plugs. A spring is installed inside the groove, one end of the spring is connected to a movable block, and a locking post extending into the locking hole is installed on one side of the movable block, and a pressure rod penetrating to the outside of the connector is installed on the other side of the movable block.

[0007] By adopting the above technical solution, when the pressure rod is pressed, the pressure rod will drive the movable block to move, and the movable block will drive the locking pin to move, so that the locking pin is locked into the locking hole, thereby achieving the purpose of locking the nose plug.

[0008] Furthermore, the disassembly and assembly assembly also includes positioning grooves on both sides of the top of the connector, with positioning blocks inside the positioning grooves and sealing rings installed on the top of the positioning blocks, the sealing rings being fixed to the outer wall of the nose plug.

[0009] By adopting the above technical solution, when installing the nasal plug, the nasal plug can be inserted into the connector, and the positioning block can be inserted into the positioning groove to position the nasal plug.

[0010] Furthermore, the disassembly and assembly assembly also includes a sealing ring installed on the inner wall of the connector, with the outer wall of the nose plug fitting against the inner wall of the sealing ring.

[0011] By adopting the above technical solution, the sealing ring can improve the sealing between the connector and the nose plug, preventing gas from escaping from the gap between the connector and the nose plug.

[0012] Furthermore, both the inner wall of the limiting sleeve and the outer wall of the connector are threaded, and the limiting sleeve and the connector are threadedly connected.

[0013] By adopting the above technical solution, when the limiting sleeve is rotated, the limiting sleeve can move on the connector head, thereby facilitating the adjustment of the position of the limiting sleeve.

[0014] Furthermore, the connector is connected to the connecting tube, and the nasal plug is detachably connected to the connector.

[0015] By adopting the above technical solution, the nasal plug can be easily disassembled and then replaced.

[0016] Furthermore, one end of the oxygen source connector is equipped with an oxygen delivery main pipe, and one end of the oxygen delivery main pipe is connected to one end of the connecting pipe to an oxygen delivery auxiliary pipe.

[0017] By adopting the above technical solution, the setting of the main oxygen supply pipe and the auxiliary oxygen supply pipe facilitates the delivery of oxygen.

[0018] Furthermore, a carbon dioxide collection main pipe is installed at one end of the carbon dioxide connector, and a carbon dioxide collection auxiliary pipe is connected to the other end of the carbon dioxide collection main pipe and the connecting pipe. A transition joint is sleeved on the outer wall of the oxygen delivery main pipe and the carbon dioxide collection main pipe.

[0019] By adopting the above technical solution, the setting of the main carbon dioxide collection pipe and the secondary carbon dioxide collection pipe facilitates the collection of carbon dioxide.

[0020] Furthermore, the inner wall of the limiting sleeve fits against the end of the pressure rod, and the outer wall of the limiting sleeve is provided with anti-slip texture.

[0021] By adopting the above technical solution, the limiting sleeve can limit the pressure rod and prevent it from moving at will, while the anti-slip texture makes it easy to rotate the limiting sleeve.

[0022] Furthermore, the locking pin is adapted to the locking hole, and the locking pin is slidably connected to the groove via a movable block.

[0023] By adopting the above technical solution, after the card post is inserted into the card hole, the nose plug can be limited, thereby completing the installation of the nose plug.

[0024] Furthermore, the positioning block is adapted to the positioning groove, and the bottom of the sealing ring is fitted with the top of the connector.

[0025] By adopting the above technical solution, the nasal plug can be positioned after the positioning block is inserted into the positioning groove.

[0026] In summary, the present invention has the following main advantages:

[0027] 1. This utility model features a disassembly and assembly component. When the nasal plug is blocked and needs replacement, the operator can rotate the limiting sleeve to move it and no longer block the pressure rod. At this time, the spring is stretched, which pushes the movable block to move, and then drives the locking post to move. The locking post moves out of the locking hole, thereby releasing the limitation on the nasal plug. Then, the nasal plug is moved upward to replace it. When installing the nasal plug, simply insert the nasal plug into the connector and align the locking hole with the locking post. Then, press the pressure rods on both sides to make the movable block move the locking post. After the locking post is inserted into the locking hole, the nasal plug is locked and limited. This completes the installation of the nasal plug. This method allows for quick disassembly and replacement of the nasal plug, and the operation process is simple and convenient, thereby improving the efficiency of nasal cannula replacement.

[0028] 2. This utility model is equipped with a sealing ring, a positioning block and a positioning groove. When installing the nasal plug, the nasal plug can be inserted into the connector and the positioning block can be inserted into the positioning groove to position the nasal plug. At this time, the locking pin is aligned with the locking hole, which makes it easy for the locking pin to be accurately locked into the locking hole, thereby improving the locking efficiency of the nasal plug.

[0029] 3. This utility model features a sealing ring, which improves the seal between the connector and the nose plug, preventing gas leakage from the gap between them. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0031] Figure 2This is a top-section schematic diagram of the connecting pipe structure of this utility model;

[0032] Figure 3 For the present utility model Figure 1 Enlarged structural diagram at point A;

[0033] Figure 4 This is a schematic diagram of the nasal plug structure of this utility model;

[0034] Figure 5 This is a schematic diagram of the connector structure of this utility model;

[0035] Figure 6 For the present utility model Figure 2 Enlarged structural diagram at point B;

[0036] Figure 7 For the present utility model Figure 4 A magnified structural diagram at point C.

[0037] In the diagram: 1. Oxygen source connector; 2. Main oxygen supply pipe; 3. Main carbon dioxide collection pipe; 4. Carbon dioxide connector; 5. Secondary carbon dioxide collection pipe; 6. Transition connector; 7. Secondary oxygen supply pipe; 8. Connecting pipe; 9. Assembly / disassembly assembly; 901. Sealing ring; 902. Positioning block; 903. Positioning groove; 904. Sealing ring; 905. Locking post; 906. Locking hole; 907. Groove; 908. Spring; 909. Movable block; 910. Limiting sleeve; 911. Pressure rod; 10. Nose plug; 11. Connector. Detailed Implementation

[0038] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0039] The embodiments of this utility model will be described below based on its overall structure.

[0040] Example 1:

[0041] A nasal cannula for assisting end-tidal carbon dioxide monitoring, such as Figures 1-7As shown, it includes an oxygen source connector 1, a carbon dioxide connector 4, and a connecting pipe 8. Two connectors 11 are installed on the connecting pipe 8, and a nasal plug 10 is inserted into the interior of each connector 11. An oxygen supply main pipe 2 is installed at one end of the oxygen source connector 1. An oxygen supply auxiliary pipe 7 is connected to one end of the connecting pipe 8 at one end of the oxygen supply main pipe 2. The oxygen supply main pipe 2 and the oxygen supply auxiliary pipe 7 are designed to facilitate the delivery of oxygen. A carbon dioxide collection main pipe 3 is installed at one end of the carbon dioxide connector 4. A carbon dioxide collection auxiliary pipe 5 is connected to the other end of the connecting pipe 8 at the carbon dioxide collection main pipe 3. A transition connector 6 is fitted on the outer wall of the oxygen supply main pipe 2 and the carbon dioxide collection main pipe 3. The carbon dioxide collection main pipe 3 and the carbon dioxide collection auxiliary pipe 5 are designed to facilitate the collection of carbon dioxide.

[0042] See Figures 2-6 The connector 11 is also equipped with a disassembly and assembly component 9. The disassembly and assembly component 9 includes grooves 907 on both sides inside the connector 11, a limiting sleeve 910 sleeved on the outer wall of the connector 11, and locking holes 906 on the lower sides of the two nose plugs 10. A spring 908 is installed inside the groove 907. One end of the spring 908 is connected to a movable block 909. A locking post 905 extending into the locking hole 906 is installed on one side of the movable block 909. A pressure rod 911 penetrating to the outside of the connector 11 is installed on the other side of the movable block 909. When the pressure rod 911 is pressed, the pressure rod 911 will drive the movable block 909 to move. The movable block 909 will drive the locking post 905 to move, so that the locking post 905 is locked into the locking hole 906, thereby achieving the purpose of locking the nose plugs 10. The inner wall of the limiting sleeve 910 and the outer wall of the connector 11 are both threaded.

[0043] Specifically, the limiting sleeve 910 is threadedly connected to the connector 11. When the limiting sleeve 910 is rotated, it can move on the connector 11, thus facilitating the adjustment of its position. The connector 11 is connected to the connecting pipe 8. The nose plug 10 is detachably connected to the connector 11, facilitating its removal and replacement. The inner wall of the limiting sleeve 910 fits against the end of the pressure rod 911, and the outer wall of the limiting sleeve 910 has anti-slip textures. The limiting sleeve 910 can limit the pressure rod 911, preventing it from moving freely. The anti-slip textures facilitate the rotation of the limiting sleeve 910. The locking post 905 is adapted to the locking hole 906. The locking post 905 is slidably connected to the groove 907 via the movable block 909. After the locking post 905 is inserted into the locking hole 906, it can limit the nose plug 10, thus completing the installation of the nose plug 10.

[0044] Example 2:

[0045] Based on the above embodiment 1, in order to facilitate the installation of the nose plug 10 and align the card post 905 with the card hole 906, the nose plug 10 needs to be positioned, so the following structure will be set.

[0046] Specifically, the disassembly and assembly component 9 also includes positioning grooves 903 on both sides of the top of the connector 11. Positioning blocks 902 are fitted inside the positioning grooves 903, and sealing rings 901 are installed on the top of the positioning blocks 902. The sealing rings 901 are fixed to the outer wall of the nose plug 10. The positioning blocks 902 are adapted to the positioning grooves 903, and the bottom of the sealing rings 901 is in contact with the top of the connector 11. When the nose plug 10 is installed, the nose plug 10 can be inserted into the connector 11, and the positioning blocks 902 can be inserted into the positioning grooves 903 to position the nose plug 10.

[0047] Example 3:

[0048] Based on the above embodiment 1, in order to improve the sealing between the connector 11 and the nose plug 10 and prevent gas leakage, the following structure will be provided.

[0049] See Figure 4 , Figure 6 and Figure 7 The disassembly assembly 9 also includes a sealing ring 904 installed on the inner wall of the connector 11. The outer wall of the nose plug 10 fits against the inner wall of the sealing ring 904. The sealing ring 904 can improve the sealing between the connector 11 and the nose plug 10 and prevent gas from escaping from the gap between the connector 11 and the nose plug 10.

[0050] The working principle of this utility model is as follows: First, when using this nasal cannula, the staff can insert two nasal plugs 10 into the nasal cavity, then connect the oxygen source connector 1 to the oxygen supply equipment, and connect the carbon dioxide connector 4 to the end-tidal carbon dioxide monitoring equipment. The oxygen supply equipment can then supply oxygen, so that oxygen enters the nasal cavity through the oxygen supply main tube 2 and the oxygen supply auxiliary tube 7, thereby playing the role of oxygen supply. The carbon dioxide gas exhaled by the patient will enter the end-tidal carbon dioxide monitoring equipment through the carbon dioxide collection auxiliary tube 5 and the carbon dioxide collection main tube, thus facilitating the monitoring of the carbon dioxide gas exhaled by the patient.

[0051] When it is found that the nasal plug 10 is blocked but the catheter is not blocked, the nasal plug 10 can be replaced first. The operator can rotate the limiting sleeve 910 so that the movement of the limiting sleeve 910 no longer blocks the pressure rod 911. At this time, the spring 908 is stretched, which pushes the movable block 909 to move, and then drives the locking post 905 to move, so that the locking post 905 moves out of the locking hole 906, thereby releasing the limitation on the nasal plug 10. Then, the nasal plug 10 is moved upward to replace it. When installing the nasal plug 10, simply remove the nasal plug... Insert 10 into connector 11 and insert positioning block 902 into positioning groove 903 to position nose plug 10. At this time, the locking hole 906 is aligned with the locking post 905. Then press the pressure rods 911 on both sides to move the locking post 905 driven by movable block 909. After the locking post 905 is locked into the locking hole 906, the nose plug 10 can be locked and limited. Thus, the installation of nose plug 10 can be completed. The setting of sealing ring 904 can improve the sealing between connector 11 and nose plug 10.

[0052] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A nasal cannula for assisted end-tidal capnography comprising an oxygen source connector (1), a carbon dioxide connector (4) and a connecting tube (8), characterized in that: Two connecting heads (11) are mounted on the connecting pipe (8), a nose plug (10) is arranged in each of the two connecting heads (11), a dismounting assembly (9) is arranged in the connecting head (11), the dismounting assembly (9) comprises a groove (907) arranged on both sides of the connecting head (11), a limiting sleeve (910) sleeved on the outer wall of the connecting head (11) and a clamping hole (906) arranged below both sides of the nose plug (10), a spring (908) is arranged in the groove (907), one end of the spring (908) is connected with a movable block (909), one side of the movable block (909) is provided with a clamping column (905) extending into the clamping hole (906), and the other side of the movable block (909) is provided with a pressing rod (911) penetrating out of the connecting head (11).

2. The nasal cannula for aiding end-tidal capnography according to claim 1, wherein: The dismounting assembly (9) further comprises a positioning groove (903) arranged on both sides of the top of the connecting head (11), a positioning block (902) is arranged in the positioning groove (903), and a sealing ring (901) is arranged on the top of the positioning block (902), and the sealing ring (901) is fixed to the outer wall of the nose plug (10).

3. The nasal cannula for aiding end-tidal capnography according to claim 1, wherein: The dismounting assembly (9) further comprises a sealing ring (904) arranged on the inner wall of the connecting head (11), and the outer wall of the nose plug (10) is attached to the inner wall of the sealing ring (904).

4. The nasal cannula of claim 1, wherein: The inner wall of the limiting sleeve (910) and the outer wall of the connecting head (11) are provided with threads, and the limiting sleeve (910) is threadedly connected with the connecting head (11).

5. The nasal cannula for aiding end-tidal capnography according to claim 1, wherein: The connecting head (11) is connected with the connecting pipe (8), and the nose plug (10) is detachably connected with the connecting head (11).

6. The nasal cannula for aiding end-tidal capnography according to claim 1, wherein: One end of the oxygen source connector (1) is provided with an oxygen supply main pipe (2), one end of the oxygen supply main pipe (2) is connected with an oxygen supply auxiliary pipe (7) at one end of the connecting pipe (8).

7. The nasal cannula of claim 6, wherein: One end of the carbon dioxide connector (4) is provided with a carbon dioxide collection main pipe (3), the carbon dioxide collection main pipe (3) is connected with a carbon dioxide collection auxiliary pipe (5) at the other end of the connecting pipe (8), and the outer walls of the oxygen supply main pipe (2) and the carbon dioxide collection main pipe (3) are sleeved with a transition connector (6).

8. The nasal cannula for aiding end-tidal capnography according to claim 1, wherein: The inner wall of the limiting sleeve (910) is attached to the end of the pressing rod (911), and the outer wall of the limiting sleeve (910) is provided with anti-skid lines.

9. The nasal catheter for aiding end-tidal capnography according to claim 1, wherein: The clamping column (905) is matched with the clamping hole (906), and the clamping column (905) is slidably connected with the groove (907) through the movable block (909).

10. The nasal cannula for aiding end-tidal capnography according to claim 2, wherein: The positioning block (902) is matched with the positioning groove (903), and the bottom of the sealing ring (901) is attached to the top of the connecting head (11).

Images