Tracheal tube aerosol delivery device

Abstract

The utility model relates to the technical field of breathing machine accessories, provide a tracheal tube aerosol administration device, including with breathing machine external connection pipe connection's breathing machine external connection pipe interface, breathing machine external connection pipe interface end sets up a mist storage pipe, the upper and the mist storage tank air inlet end located of breathing machine external connection pipe interface set up aerosol interface, the mist storage pipe end sets up tracheal catheter interface, aerosol interface's central axis is parallel with the central axis of mist storage pipe, and the diameter of mist storage pipe is greater than the sum of the diameter of aerosol interface and breathing machine external connection pipe interface, avoids the condition that the liquid medicine can not be fully atomized, reduces the waste condition of salbutamol.

Description

Technical Field

[0001] This utility model relates to the field of ventilator accessories technology, specifically to a tracheal intubation aerosol delivery device. Background Technology

[0002] Currently, during the perioperative period, patients with endotracheal intubation, especially under light anesthesia, are prone to bronchoalve hyperresponsiveness during intubation, extubation, suctioning, and stimulation by secretions, which can induce severe bronchospasm, leading to severe airway stenosis and ventilation difficulties. Bronchospasm is characterized by rapid onset, rapid progression, and serious consequences. If it is not detected, diagnosed, and effectively treated in a timely manner, it can lead to severe hypoxemia, subsequently causing hypoxic encephalopathy, and even inducing cardiac arrest. Salbutamol, a β2-adrenergic receptor agonist, is an effective medication for bronchospasm. In conscious patients, salbutamol can be inhaled into the trachea through spontaneous breathing. However, during endotracheal intubation, patients do not breathe spontaneously, and the medication can only be sprayed into the round opening of the endotracheal tube to relax bronchial smooth muscle. To address situations where patients lack spontaneous breathing but require salbutamol inhalation, existing technologies utilize a converter located on the side wall of the ventilator's air inlet. A salbutamol nebulizer is connected to the converter. A specific structure can be found in the utility model patent CN220046774 U, which provides a ventilator elbow for connecting to the salbutamol nebulizer opening. The elbow includes an air inlet assembly port at one end, connected to the ventilator's external tubing, and an air outlet assembly port at the other end, connected to the endotracheal tube. A converter connected to the salbutamol nebulizer is located in the middle of the elbow. The medication delivery tube is located inside the elbow, with end A below the converter and end B inside the endotracheal tube.

[0003] The above-mentioned solution, through a delivery tube connected to the converter, can effectively deliver salbutamol through the delivery port in conjunction with the air supplied by the external tube of the ventilator. This can solve the problem of patients who have no spontaneous breathing but still need to inhale salbutamol. However, in the device of the above patent, the aerosol outlet is perpendicular to the side wall of the delivery tube, the delivery tube is relatively thin, and the first bend of the delivery tube is close to the aerosol outlet. The aerosol is sprayed out at a fast speed and the flow path is too narrow. The sprayed droplets are concentrated on the side wall of the upper delivery tube, and most of the sprayed liquid is directly adsorbed and condensed on the side wall of the delivery tube, which cannot be fully atomized, resulting in waste of salbutamol and inaccurate dosage. Utility Model Content

[0004] To achieve the above objectives, this utility model proposes an endotracheal intubation aerosol delivery device, including an external ventilator connector connected to an external ventilator connector, a reservoir tube at the end of the external ventilator connector, an aerosol connector above the external ventilator connector and located at the air inlet of the reservoir, an endotracheal tube connector at the end of the reservoir tube, the central axis of the aerosol connector being parallel to the central axis of the reservoir tube, and the diameter of the reservoir tube being larger than the sum of the diameters of the aerosol connector and the external ventilator connector.

[0005] A further configuration is made such that the central axis of the external tube interface of the ventilator intersects the central axis of the aerosol interface at the aerosol interface. This intersecting structure helps the aerosol spray to be delivered to the spasm area more quickly under the action of oxygen flow after being sprayed.

[0006] A further configuration is provided, wherein the side wall of the external tube of the ventilator can be connected to the endotracheal tube interface through a bypass tube. By setting the bypass tube, when only oxygen is supplied, oxygen can flow through the bypass tube alone, and the nebulizer tube can flow through the aerosol alone.

[0007] A further configuration includes a three-way valve inside the endotracheal tube interface, which connects to the external ventilator tube, the reservoir tube, and the bypass tube, respectively. The three-way valve facilitates the adjustment of the flow paths in the three directions of the external ventilator tube, the reservoir tube, and the bypass tube.

[0008] A further configuration includes a reducing pipe between the mist reservoir and the tracheal conduit interface. The diameter of the reducing pipe gradually decreases along the direction from the mist reservoir to the tracheal conduit interface. This pipe structure can accelerate airflow and enhance the delivery power of the atomized drug solution.

[0009] A further configuration is that the mist storage tube extends along the gas outflow direction, providing more sufficient residence time and space for liquid atomization.

[0010] A further configuration is made such that the central axis of the endotracheal tube interface is parallel to the central axis of the reservoir tube. This parallel structure helps to maintain a consistent airflow direction and reduce turbulence and drug loss.

[0011] Further, the mist reservoir, aerosol interface, ventilator external connector interface, endotracheal tube interface, and reducer are integrated into one unit. This one-piece molding structure avoids the risk of leakage at the connection points and improves the sealing performance and overall stability of the device.

[0012] A further configuration is provided whereby an aerosol interface cover is detachable and installable, and a surrounding plate is provided on the side of the aerosol interface cover. The surrounding plate can be sleeved onto the outer wall of the aerosol interface, and the design of the surrounding plate enhances the sealing performance of the interface.

[0013] The beneficial effects of one or more of the above technical solutions: This invention features a reservoir tube of a certain length and width at the end of the external connector of a ventilator, extending along the gas outflow direction. An aerosol inlet is located above the external connector and at the air inlet of the reservoir. The central axis of the aerosol inlet is parallel to the central axis of the reservoir tube. Through the parallel aerosol inlet and reservoir tube, the aerosol is guided to be sprayed into the reservoir tube. Because the reservoir tube has a certain length and width, the sprayed drug droplets float along its length, providing ample space for atomization and preventing direct spraying onto the sidewalls of the tubing. Oxygen from the external connector delivers the atomized droplets into the patient's trachea through the endotracheal tube inlet, preventing incomplete atomization of the medication, reducing salbutamol waste, and ensuring accurate medication administration. Attached Figure Description

[0014] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute a limitation thereof.

[0015] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of this utility model.

[0016] Figure 2 This is a diagram showing the distribution of the central axis of the external tube interface and the central axis of the aerosol interface of the ventilator in Example 1.

[0017] Figure 3 This is a structural schematic diagram of Embodiment 2 of the present invention.

[0018] Figure 4 This is a structural schematic diagram of the valve in the first state of Embodiment 2 of this utility model.

[0019] Figure 5 This is a structural schematic diagram of the valve in the second state of Embodiment 2 of this utility model.

[0020] In the diagram, 1 is the mist reservoir; 2 is the external connector for the ventilator. 3. External connection tube for ventilator; 4. Aerosol inlet; 41. Aerosol inlet cover; 42. Enclosure panel; 5. Endotracheal tube interface; 6. Variable diameter tube; 7. Central axis of ventilator external tube interface; 8. Central axis of aerosol interface; 9. Bypass tube; 10. Valve. Detailed Implementation

[0021] The specific implementation of this embodiment will now be described with reference to the accompanying drawings.

[0022] Example 1 A tracheal intubation aerosol drug delivery device, as described in the following description Figure 1 and Figure 2 The device includes a ventilator external connector 2 connected to the ventilator external connector 3. A reservoir tube 1 is provided at the end of the ventilator external connector 2. An aerosol inlet 4 is provided above the ventilator external connector 2 and at the air inlet end of the reservoir tube 1. An endotracheal tube inlet 5 is provided at the end of the reservoir tube 1. The central axis 8 of the aerosol inlet 4 is parallel to the central axis of the reservoir tube 1. The diameter of the reservoir tube 1 is larger than the sum of the diameters of the aerosol inlet 4 and the ventilator external connector 2. This structural design allows the aerosol to directly enter the internal space of the reservoir tube 1 after being sprayed, avoiding direct impact of the liquid medication on the tube wall. This significantly improves the drug nebulization efficiency and delivery effect, reduces drug waste, and ensures the accuracy of drug dosage. It is especially suitable for endotracheal administration to patients without spontaneous breathing.

[0023] The central axis 7 of the external tube interface 2 of the ventilator intersects with the central axis 8 of the aerosol interface 4 at the aerosol interface 4. This intersecting structure helps to deliver the aerosol generated after spraying to the trachea more fully and quickly.

[0024] A reducing tube 6 is provided between the mist reservoir 1 and the tracheal tube interface 5. The diameter of the reducing tube 6 gradually decreases along the direction from the mist reservoir 1 to the tracheal tube interface 5. The reducing tube 6 structure can accelerate the airflow and enhance the delivery power of the nebulized drug solution, improve the efficiency of drug entering the trachea, and at the same time avoid drug deposition or condensation during delivery, further optimizing drug utilization and treatment effect.

[0025] The mist storage tube 1 extends along the gas outflow direction, providing more residence time and space for liquid atomization, enhancing the atomization effect and reducing the amount of drug residue on the device wall.

[0026] The central axis of the endotracheal tube interface 5 is parallel to the central axis of the reservoir tube 1. This parallel structure helps to maintain consistent airflow direction, reduce turbulence and drug loss, and ensure that the drug can be delivered efficiently and directionally to the patient's airway, thereby improving the accuracy and controllability of drug administration.

[0027] The inhaler tube 1, aerosol interface 4, ventilator external tube interface 2, endotracheal tube interface 5, and reducer tube 6 are integrated into one piece. The one-piece molding structure avoids the risk of leakage at the connection, improves the sealing performance and overall stability of the device, simplifies the manufacturing process, reduces the failure rate, and is more suitable for high-frequency clinical use environments.

[0028] The aerosol interface 4 is disassembled and installed with the aerosol interface cover 41. The aerosol interface cover 41 has a side panel 42. The side panel 42 can be fitted onto the outer wall of the aerosol interface 4. The side panel 42 is designed to enhance the sealing of the interface.

[0029] The external interface is a round tube, and the outer side of the round tube is fitted with the ventilator external tube interface 2. The outer wall of the external interface and the inner wall of the ventilator external tube interface 2 are press-fitted. The press-fit design ensures a firm connection and good sealing, preventing gas or drug leakage, improving the reliability and safety of the device, and facilitating quick installation and disassembly, thus improving clinical operation efficiency.

[0030] The working principle of this device is as follows: Equipment assembly: Connect the ventilator external tube interface 2 to the ventilator external tube 3, install the aerosol interface cover 41 on the aerosol interface 4, and connect the endotracheal tube interface 5 to the existing endotracheal tube.

[0031] Connect the oxygen source to the ventilator, turn on the ventilator, adjust the oxygen flow rate as needed, so that the oxygen enters the nebulizer tube through the external ventilator tube 3, and then reaches the patient's lungs through the endotracheal tube interface 5 and the existing endotracheal tube.

[0032] When a patient experiences bronchospasm, pick up the metered-dose aerosol dispenser and shake it thoroughly. Remove the aerosol interface cap 41 and connect the metered-dose aerosol dispenser (not shown in the attached diagram) to the aerosol interface 4. Press the metered-dose aerosol dispenser to administer the required dose, and the metered aerosol will be sprayed into the reservoir tube. Because the reservoir tube 1 has a certain length and width, the sprayed drug droplets float along the length of the reservoir tube 1, providing sufficient space for the drug droplets to atomize. This avoids the technical problem of the drug droplets condensing into liquid and failing to atomize properly when sprayed directly onto the side wall of the tubing. The oxygen from the ventilator external tube interface 2 delivers the atomized droplets into the patient's trachea through the endotracheal tube interface 5 to relieve bronchospasm.

[0033] Example 2 A tracheal intubation aerosol drug delivery device, as described in the following description Figure 3 It is also equipped with a bypass pipe 9 and a valve 10. The specific structure includes a ventilator external pipe interface 2 connected to the ventilator external pipe 3, a reservoir tube 1 at the end of the ventilator external pipe interface 2, an aerosol interface 4 above the ventilator external pipe interface 2 and located at the air inlet end of the reservoir tube 1, an endotracheal tube interface 5 at the end of the reservoir tube 1, the central axis 8 of the aerosol interface 4 being parallel to the central axis of the reservoir tube 1, and the diameter of the reservoir tube 1 being greater than the sum of the diameters of the aerosol interface 4 and the ventilator external pipe interface 2.

[0034] The external tube of the ventilator can be connected to the endotracheal tube interface via a bypass tube. By setting up the bypass tube, when only oxygen is supplied, oxygen can flow through the bypass tube alone, and the nebulizer tube can flow through the aerosol alone.

[0035] A three-way valve 10 is installed inside the endotracheal tube interface 5 (since the switching principle and switching structure of the three-way valve 10 are existing technologies, specific details and internal structural connections of the three-way valve 10 are not shown in this embodiment). The three-way valve 10 connects the ventilator external connector 3, the reservoir tube 1, and the bypass tube 9 respectively. The three-way valve 10 facilitates the adjustment of the flow paths in three directions: the ventilator external connector 3, the reservoir tube 1, and the bypass tube 9. (Refer to...) Figure 4 and Figure 5 The gas flows in the following directions through the three-way valve 10: A leads to the external connection of the ventilator, B leads to the mist reservoir, and C leads to the bypass line. The working principle of this device is as follows: Equipment assembly: Connect the external ventilator connector 2 to the external ventilator connector 3, install the aerosol connector cover 41 on the aerosol connector 4, connect the endotracheal tube connector 5 to the existing endotracheal tube, and adjust the existing valve 10 to connect the bypass tube 9 to the external ventilator connector 3.

[0036] Connect the oxygen source to the ventilator, turn on the ventilator, adjust the oxygen flow rate as needed, so that the oxygen passes through the ventilator, along the external ventilator tube 3, through the valve, then through the bypass tube 9, the endotracheal tube interface 5, and through the existing endotracheal tube to reach the patient's lungs.

[0037] Usage Method 1 When a patient experiences bronchospasm, pick up the metered aerosol dispenser and shake it thoroughly. Remove the aerosol interface cap 41, then connect the metered aerosol dispenser (not shown in the attached diagram) to the aerosol interface 4. Press the metered aerosol dispenser to administer the required dose, and the metered aerosol will be sprayed into the reservoir tube 1 and fully atomized therein. Then, adjust the existing technology valve 10 to connect the reservoir tube 1 to the ventilator external connector 3. The oxygen from the ventilator external connector 2 will deliver the atomized droplets into the patient's trachea through the tracheal tube interface 5, thereby relieving bronchospasm.

[0038] Method 2 When it is anticipated that the patient's bronchi will spasm, pick up the metered aerosol dispenser and shake it thoroughly. Remove the aerosol interface cap 41, then connect the metered aerosol dispenser (not shown in the attached diagram) to the aerosol interface 4. Press the metered aerosol dispenser to dispense the required dose, and the metered aerosol will be sprayed into the reservoir tube 1 and fully atomized and temporarily stored therein.

[0039] When a patient experiences bronchospasm, adjusting the existing valve 10 connects the reservoir tube 1 to the external ventilator connector 3. Oxygen from the external ventilator connector 2 is then delivered as atomized droplets into the patient's trachea through the tracheal tube connector 5, relieving bronchospasm. This eliminates the need for shaking, connecting the aerosol delivery device, and pressing, allowing for faster drug administration. While the specific embodiments of this invention have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of this invention. Those skilled in the art should understand that various modifications or variations that can be made without creative effort based on the technical solution of this invention are still within the scope of protection of this invention.

Claims

1. A endotracheal intubation aerosol drug delivery device, characterized in that, The device includes a ventilator external connector that connects to the external connector of the ventilator. A reservoir tube is provided at the end of the external connector. An aerosol inlet is provided above the external connector and at the air inlet of the reservoir. An endotracheal tube inlet is provided at the end of the reservoir tube. The central axis of the aerosol inlet is parallel to the central axis of the reservoir tube. The diameter of the reservoir tube is larger than the sum of the diameters of the aerosol inlet and the external connector.

2. The endotracheal intubation aerosol drug delivery device according to claim 1, characterized in that, The central axis of the external tube interface of the ventilator intersects with the central axis of the aerosol interface at the aerosol interface.

3. The endotracheal intubation aerosol drug delivery device according to claim 1, characterized in that, A reducing pipe is provided between the mist reservoir tube and the tracheal tube interface, and the diameter of the reducing pipe gradually decreases along the direction from the mist reservoir tube to the tracheal tube interface.

4. The endotracheal intubation aerosol drug delivery device according to claim 1, characterized in that, The side wall of the external tube of the ventilator can be connected to the endotracheal tube interface via a bypass tube.

5. The endotracheal intubation aerosol drug delivery device according to claim 1, characterized in that, The endotracheal tube interface is equipped with a three-way valve, which is connected to the external ventilator tube, the reservoir tube, and the bypass tube, respectively.

6. The endotracheal intubation aerosol drug delivery device according to claim 1, characterized in that, The mist storage pipe extends along the gas outflow direction.

7. The endotracheal intubation aerosol delivery device according to claim 1, characterized in that, The central axis of the endotracheal tube interface is parallel to the central axis of the reservoir tube.

8. The endotracheal intubation aerosol delivery device according to claim 3, characterized in that, The reservoir tube, aerosol interface, ventilator external tube interface, endotracheal tube interface, and reducer are integrated into one unit.

9. The endotracheal intubation aerosol drug delivery device according to claim 1, characterized in that, The aerosol interface is detachable and has an aerosol interface cover installed. The aerosol interface cover has a side panel that can be fitted onto the outer wall of the aerosol interface.

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