'+'-shaped pipeline connected with normal-pressure high-flow oxygen inhalation device

Abstract

The utility model relates to a '+'-shaped pipeline connected with a normal-pressure high-flow oxygen inhalation device, which is suitable for tracheal intubation or tracheotomy patients and solves the problem that the end-expiratory pressure is reduced when the normal-pressure high-flow oxygen inhalation device is used. The device is composed of a cross-shaped connecting pipe 1. 2, a detachable sputum suction movable cap; and 3, a gradually narrowed expiration port device. A lower connector of the '+'-shaped pipeline can be connected with a trachea cannula or a tracheotomy connector, an upper connector of the '+'-shaped pipeline can be connected with a sputum suction movable cap with a valve, a conventional sputum suction pipe can be used for sucking sputum, and after the movable cap is removed, the upper connector of the '+'-shaped pipeline can be connected with a medical closed sputum suction device for sucking sputum. The left side and the right side of the '+'-shaped pipeline are connected with a normal-pressure high-flow oxygen inhalation device or other airway humidifying devices to form an air inlet, and the other side of the '+'-shaped pipeline is connected with an exhalation port device with a gradually-narrowed pipe cavity, so that the end-expiratory pressure in the pipeline is increased.

Description

Technical Field

[0001] This utility model patent relates to the field of medical devices. Background Technology

[0002] During normal respiration, air passes through the mouth and nose, and trachea, reaching the bifurcation of the left and right bronchi. At this point, the air is heated to 37°C, with a relative humidity of 100% and an absolute humidity of 44 mg / L. This location is called the isothermal saturation interface. This warm and humid environment allows the mucociliary clearance system of the airway mucosa to function optimally, facilitating the removal of airway debris. Patients with endotracheal intubation or tracheotomy lose the active warming and humidification function of the mouth and nose, as well as part of the airway. This causes the isothermal saturation interface to shift downwards, reducing the temperature and humidity within the small airways. This leads to airway mucosal damage, decreased expectoration capacity, sputum plug formation, and a higher risk of complications such as atelectasis.

[0003] To address the issues of isothermal saturation, insufficient airway humidification, sputum plugging, and worsening pulmonary infections in intubated and tracheotomized patients, clinical practice often uses an electrically heated thermostatic steam generator connected to a T-tube to improve airway humidification. However, the T-tube needs to be removed when suctioning is required, increasing operational inconvenience. In recent years, the widespread use of high-flow-rate oxygen therapy devices has not only effectively solved the airway humidification problem but also provided higher end-expiratory pressure due to its high flow rate, resulting in a more significant pressure therapy effect. Because the inspiratory and expiratory ends of the T-tube have the same diameter, there is a significant pressure loss within the high-flow-rate oxygen therapy tubing, rendering it ineffective for pressure therapy. Summary of the Invention

[0004] To address the pressure drop issue in intubated or tracheotomized patients using a high-flow-rate oxygen therapy device, the following technical solution is proposed: The device consists of 1. a "+" type connecting tube; 2. a detachable suction cap; and 3. a progressively narrowing expiratory port device. The upper end of the "+" type connecting tube connects to the detachable suction cap, allowing connection to the suction device after removing the cap. One end connects to the high-flow-rate oxygen therapy device, and the other end connects to the progressively narrowing expiratory port device. The lower end connects to the patient's artificial airway. The progressively narrowing expiratory port design increases the pressure within the tubing under the same airflow, thus resolving the pressure drop issue after connecting the artificial airway to the high-flow-rate oxygen therapy device. Attached Figure Description

[0005] Figure 1 is a schematic diagram of the overall structure of this utility model;

[0006] Figure 2 is a schematic diagram of the "+" type connecting pipe of this utility model;

[0007] Figure 3 is a schematic diagram of the detachable suction cap of this utility model;

[0008] Figure 4 is a schematic diagram of the gradually narrowing exhalation port device of this utility model;

[0009] Figure 5 is a schematic diagram of a specific embodiment of this utility model;

[0010] In Figure 1: 1 is a "+" shaped connecting tube; 2 is a detachable suction cap; 3 is a gradually narrowing expiratory port device. Figure 5 In the diagram: a) shows the airflow direction provided by the high-flow oxygen therapy device at normal pressure; b) shows the airflow direction exhaled by the patient. Detailed Implementation

[0011] As shown in Figure 5, the atmospheric pressure high-flow-rate oxygen therapy device provides heated and humidified high-flow-rate gas, represented by the blue arrow labeled "a" in Figure 5. The patient's exhaled gas is represented by the gray airflow labeled "b" in the figure. During inhalation, some of the heated and humidified gas enters the airway, while most of the high-flow-rate gas is expelled through the exhalation port. During exhalation, all gas is expelled through the exhalation port. The design of the exhalation port, with its gradually narrowing lumen, increases the pressure within the tubing at the same airflow rate.

Claims

1. A "+ " type pipe for connecting a normal pressure high flow oxygen inhalation device, characterized in that The lower interface of the "+" type pipeline can be connected with a tracheal cannula or a tracheal incision interface, and the upper interface can be connected with a sputum suction valve cap with a valve. Through the latex valve, a conventional sputum suction tube can be used for sputum suction. After the valve cap is removed, the upper interface can be connected with a medical closed sputum suction device, and the closed sputum suction device is used for sputum suction. The left and right sides of the "+" type pipeline are air inlet and air outlet, and the gradually narrowed air outlet improves the end-expiratory pressure in the pipeline.

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