CN217339676U - Trachea cannula capable of automatically discharging phlegm by one-way airflow - Google Patents

Abstract

The utility model belongs to the technical field of medical instrument, concretely relates to trachea cannula of automatic sputum discharging of one-way air current. The catheter comprises a catheter body, wherein an elastic diaphragm is arranged in the catheter body, the inner cavity of the catheter is divided into an expiration channel and an inspiration channel by the elastic diaphragm, and a one-way valve is arranged at the far lung end of the inspiration channel. There is an elastic diaphragm at pipe body center, falls into inspiratory channel and two independent passageways of expiratory channel with the pipe, and in respiratory cycle, the gas of exhalation can be lasted and discharged to external by the expiratory channel, and the kinetic energy of air current makes secretion and sputum in the respiratory track continuously flow to external unilaterally, plays automatic sputum discharging function, eliminates or has reduced the effect that the intubate was blocked to the phlegm bolt, improves patient's comfort level.

Description

A kind of tracheal intubation with one-way airflow automatic sputum excretion

technical field

The utility model belongs to the technical field of medical devices, in particular to a tracheal intubation tube for automatic sputum excretion with one-way airflow.

Background technique

Tracheal intubation is an important measure to ensure airway patency and rescue ventilation dysfunction. Tracheal intubation replaces the trachea to form an airway, which plays an important role in saving lives and reducing mortality. The cilia at the top of the columnar epithelial cells on the mucous layer of the tracheal wall have the function of clearing respiratory secretions and sputum, and can promote the excretion of sputum. However, the currently used tracheal intubation lacks sputum expectoration function. When inhaling, the sputum returns and stays in the trachea under the dual action of airflow and gravity, which is not easy to be discharged. Moreover, the tracheal intubation stimulates the mucus secretion of the goblet cells in the respiratory tract, increasing the size of the mucus. The sputum volume is increased, the possibility of respiratory tract infection and respiratory tract obstruction is increased, and the workload of clinical nursing is also increased. Therefore, a tracheal intubation with sputum expectoration function is urgently needed.

Utility model content

In view of the problems existing in the above-mentioned prior art, the utility model provides a tracheal intubation tube with one-way airflow to automatically expel phlegm, and specifically discloses the following technical solutions:

A tracheal intubation for automatic sputum excretion by one-way airflow, comprising a catheter body, an elastic diaphragm is arranged in the catheter body, and the elastic diaphragm separates the inner cavity of the catheter into an exhalation channel and an inhalation channel, and the inhalation channel The distal end of the lung is provided with a one-way valve.

Further, the exhalation channel and the inhalation channel form a bifurcation at the distal lung end of the catheter body, a ventilator connection joint is installed at the outlet of the distal lung end of the inhalation channel, and the distal end of the exhalation channel is installed. A latex film is arranged at the exit of the lung end, one end of the latex film is connected to the end sidewall of the exhalation channel, and the other end is a flexible free end.

Further, the cross section of the catheter body is an ellipse, and the ratio of the major axis to the minor axis of the ellipse is 5/4.

Further, the elastic diaphragm divides the catheter lumen into an exhalation channel and an inhalation channel along the short axis of the cross section of the catheter lumen, and the width of the elastic diaphragm is greater than the short axis length of the cross section of the catheter lumen and smaller than the length of the inner lumen of the catheter. 1/2 of the perimeter of the cavity cross-section.

Further, a cuff is fixed on the proximal end of the catheter body, the cuff is connected to the cuff catheter, and the free end of the cuff catheter extends along the catheter body to the distal end of the lung.

Compared with the prior art, the beneficial effects of the present utility model are:

The cross section of the catheter body of the utility model is an ellipse, and the ratio of the long axis to the short axis is 5/4, which increases the contact surface between the catheter body and the tracheal mucosa, disperses the pressure of the catheter body on the tracheal mucosa, and reduces the pressure caused by the pressure. increased mucosal irritation and improved patient comfort;

There is an elastic diaphragm in the center of the catheter body, which divides the catheter into two independent channels: the inspiratory channel and the expiratory channel. During the breathing cycle, the exhaled gas can be continuously discharged from the expiratory channel to the body, and the kinetic energy of the airflow can make the secretion in the respiratory tract. The sputum and sputum continue to flow in one direction outside the body, which plays an automatic sputum excretion function, eliminates or reduces the effect of the phlegm plug blocking the intubation, and prolongs the tube-carrying time;

The width of the elastic diaphragm is greater than the length of the short axis of the cross section of the catheter body and less than half of the circumference of the cross section of the catheter body. Viewed from the cross section of the catheter body, the elastic diaphragm is in the middle of the catheter lumen in the resting state. , S-shaped, when inhaling, the ventilator applies positive pressure ventilation, the one-way valve of the inspiratory channel opens, the air pressure in the inspiratory channel is higher than the air pressure in the expiratory channel, and the diaphragm moves toward the expiratory channel under the action of airflow. Deviation, when exhaling, the thoracic contraction movement increases the pressure in the lungs, exceeding the atmospheric pressure, and the elastic diaphragm deviates from the inspiratory channel under the action of airflow. This channel becomes larger during ventilation, and becomes smaller when it is not ventilated. The design greatly increases the ventilation efficiency;

A latex film is arranged at the outlet of the exhalation channel at the far end of the lung, and the exhaled air flow during exhalation can punch through the latex film and be discharged, and can prevent the backflow of the air flow.

Description of drawings

FIG. 1 is a schematic diagram of the overall structure of the present invention.

FIG. 2 is a schematic cross-sectional view of the catheter body of the present invention.

FIG. 3 is a schematic diagram of the state of the one-way valve in the inspiratory state.

FIG. 4 is a schematic diagram of the state of the one-way valve in the expiratory state.

1- catheter body, 2- elastic diaphragm, 3- expiratory channel, 4- inhalation channel, 5- one-way valve, 6- ventilator connection joint, 7- latex film, 8- cuff, 9- cuff catheter .

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Referring to Figures 1-4, a tracheal intubation for automatic sputum excretion by one-way airflow includes a catheter body 1, and an elastic diaphragm 2 is provided in the catheter body 1, and the elastic diaphragm 2 divides the inner cavity of the catheter into an exhalation channel 3 and the inhalation channel 4, the distal lung end of the inhalation channel 4 is provided with a one-way valve 5, and the exhalation channel 3 and the inhalation channel 4 form a bifurcation at the distal lung end of the catheter body 1, so The ventilator connection joint 6 is installed at the distal lung end outlet of the inhalation channel 4, and a latex film 7 is provided at the distal lung end outlet of the exhalation channel 3, and one end of the latex film 7 is connected to the end of the exhalation channel. The other end is a flexible free end.

When exhaling, the air flow drives sputum and secretions to be discharged from the expiratory channel 3. A sputum storage device can be connected to the outlet of the distal end of the expiratory channel 3 to store the excreted sputum. The distal end of the expiratory channel exits The latex film 7 can ensure the smooth discharge of sputum and secretions, and can prevent their backflow; the inhalation channel 4 is connected to the ventilator through the ventilator connection joint 6, and when inhaling, the oxygen supplied by the ventilator passes through the inhalation channel 4 When entering the human body, the setting of the one-way valve 5 can ensure that the gas flow direction in the inspiratory channel 4 can only flow from the distal end to the proximal end, so as to prevent reflux.

In this embodiment, the cross section of the catheter body 1 is an ellipse, and the ratio of the long axis to the short axis of the ellipse is 5/4, which increases the contact surface between the catheter body 1 and the tracheal mucosa, and disperses the catheter body 1 to the trachea. The pressure on the mucosa reduces pressure-induced mucosal irritation and improves patient comfort.

In this embodiment, the elastic diaphragm 2 divides the catheter lumen into an exhalation channel 3 and an inhalation channel 4 along the short axis of the catheter lumen cross-section, and the width of the elastic diaphragm 2 is greater than the short axis of the catheter lumen cross-section. The length of the shaft is less than 1/2 of the circumference of the cross-section of the lumen of the catheter.

Viewed from the cross section of the catheter body 1, the elastic diaphragm 2 is in the middle of the catheter lumen in a resting state, and is S-shaped. When inhaling, the ventilator applies positive pressure ventilation, the one-way valve 5 of the inhalation channel 4 opens, the air pressure in the inhalation channel 4 is higher than the air pressure in the expiratory channel 3, and the diaphragm moves toward the expiratory channel 3 under the action of the airflow. deviate. During exhalation, the thoracic contraction moves, increasing the pressure in the lungs above atmospheric pressure. The elastic diaphragm 2 deviates toward the suction channel 4 under the action of the airflow. Such a design that the channel becomes larger during ventilation and becomes smaller during non-ventilation greatly increases the ventilation efficiency.

In this embodiment, a cuff 8 is fixed at the proximal end of the catheter body 1 , the cuff 8 is connected to a cuff catheter 9 , and the free end of the cuff catheter 9 extends along the catheter body 1 to the distal lung end , the cuff 8 can be inflated through the cuff catheter 9, and the cuff 8 can be stuck in the trachea after inflation, so as to fix the catheter body 1 and prevent the catheter body 1 from moving in the trachea.

The above are only preferred embodiments of the present utility model, and are not intended to limit the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present utility model, All still belong to the scope of the technical solution of the present invention.

Claims (5)

1. The trachea cannula capable of automatically discharging phlegm by one-way airflow is characterized by comprising a catheter body, wherein an elastic diaphragm is arranged in the catheter body, the inner cavity of the catheter is divided into an expiration channel and an inspiration channel by the elastic diaphragm, and a one-way valve is arranged at the far lung end of the inspiration channel.

2. The trachea cannula capable of automatically discharging phlegm through one-way airflow according to claim 1, wherein the expiration channel and the inspiration channel are branched at the far lung end of the catheter body, a respirator connector is installed at the far lung end outlet of the inspiration channel, a latex film is arranged at the far lung end outlet of the expiration channel, one end of the latex film is connected with the end side wall of the expiration channel, and the other end of the latex film is a flexible free end.

3. A one-way air flow automatic sputum ejection endotracheal tube according to claim 1, characterized in that the cross section of the tube body is an ellipse, and the ratio of the major axis to the minor axis of the ellipse is 5/4.

4. A one-way airflow automatic sputum ejection endotracheal tube according to claim 3, characterized in that the elastic diaphragm divides the catheter lumen into an expiratory channel and an inspiratory channel along the short axis of the catheter body cross section, the width of the elastic diaphragm is larger than the length of the short axis of the catheter body cross section and smaller than 1/2 of the circumference of the catheter body cross section.

5. A one-way air flow automatic sputum ejection endotracheal tube according to claim 1, characterized in that the proximal lung end of the tube body is fixed with a cuff, the cuff is connected with a cuff tube, and the free end of the cuff tube extends along the tube body to the distal lung end.

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