CN103520817B - A kind of device preventing air flue from leaking gas when removing airway secretions - Google Patents

Abstract

The invention discloses a device for preventing airway leakage when clearing airway secretions, comprising: a connecting piece arranged between a tracheal intubation tube and a ventilation circuit, between a nasal mask and a ventilation circuit, or between a nasal mask and a ventilation circuit A round hole is opened on the connecting piece, and a one-way valve for closing the round hole is arranged at the entrance of the round hole. Compared with the prior art, the present invention provides a device for preventing airway leakage when clearing airway secretions. When a sputum suction tube or a fiberoptic bronchoscope is inserted into the round hole from the outside, the inner wall of the round hole Close to the sputum suction tube or fiberoptic bronchoscope to ensure that there is no gap between the two. A one-way valve is set on the round hole, and there is a raised ridge. The natural position of the raised ridge is close to the round hole to ensure that the airway is not blocked. Air leak.

Description

A device for preventing airway leaks when clearing airway secretions

technical field

The invention relates to a medical device, in particular to a device capable of preventing airway leakage when using a sputum suction tube or a fiber bronchoscope to remove airway secretions under invasive or noninvasive mechanical ventilation.

Background technique

Respiratory failure caused by various etiologies requires non-invasive ventilation, even endotracheal intubation, and invasive mechanical ventilation in order to maintain the patient's vital signs and provide sufficient time for the treatment of the etiology. Airway care during mechanical ventilation needs to pay attention to two issues: one is to deal with the patient's airway secretions, when non-invasively ventilated patients cannot effectively clear the airway secretions by coughing, or when invasive ventilation is performed, airway secretions The secretions should be sucked out through the sputum suction tube or fiberoptic bronchoscope in time, otherwise these secretions will affect the ventilation effect, and even ventilator-associated pneumonia may occur, which will affect the treatment effect; the second is to ensure the stability of the airway pressure, especially For patients with hypoxemia, adult respiratory distress syndrome, and endogenous positive end-expiratory pressure, repeated air leaks will not only affect the ventilation effect, but also cause lung injury.

Current methods for clearing airway secretions during invasive mechanical ventilation include:

1) Temporarily interrupt the mechanical ventilation, and use a suction tube or fiberoptic bronchoscope to suck the secretions in the endotracheal tube and airway along the endotracheal tube from near to far;

2) Continue to perform invasive mechanical ventilation, insert a connecting piece at the connection between the endotracheal tube and the ventilation circuit, and there is a small hole with a diameter of about 5mm on the connecting piece, open the small hole, suction tube or fiberoptic bronchoscope from the A small hole enters the airway and suctions the endotracheal tube and secretions in the airway from proximal to distal;

3) Continue to perform invasive mechanical ventilation, and insert a connecting piece at the connection between the endotracheal tube and the ventilation circuit. The connecting piece is connected to a retractable bag with a built-in suction tube, which enters through the small hole of the connecting piece. Airway, and suction the endotracheal tube and secretions in the airway from proximal to distal.

None of the above three methods can effectively solve the problem of clearing airway secretions while ensuring that the airway is not leaky. Among them, the first and second methods have air leakage; the third method has poor sputum suction effect, and at the same time There is also the phenomenon of air leakage when changing the sputum suction tube.

Therefore, the prior art still needs to be improved and developed.

Contents of the invention

The technical problem to be solved by the present invention is to provide a device for preventing airway leakage when clearing airway secretions, and to ensure that the airway is not leaky during invasive or non-invasive mechanical ventilation. If necessary, perform effective clearance of airway secretions.

The technical solution adopted by the present invention to solve technical problems is as follows:

A device for preventing airway leakage when clearing airway secretions, comprising: a connecting piece arranged between an endotracheal tube and a ventilation circuit, between a nasal mask and a ventilation circuit, or between a nasal mask and a ventilation circuit, the connection A circular hole is opened on the piece, and a one-way valve for closing the circular hole is provided at the entrance of the circular hole.

As a preferred solution, the one-way valve is a flexible one-way valve.

As a preferred solution, the one-way valve is hinged on the inner side of the connecting piece, and opens or closes the circular hole in a rotating manner.

As a preferred solution, the one-way valve is provided with raised ridges.

As a preferred solution, the peak of the raised ridge is located at the center of the one-way valve.

As a preferred solution, the raised ridge is made of elastic material.

As a preferred solution, the inner wall of the circular hole is provided with an elastic material layer.

As a preferred solution, at least three equidistant cracks with a depth of 1-3 mm are provided on the elastic material layer.

As a preferred solution, the diameter of the circular hole is 3-10mm.

Beneficial effects of the present invention:

Compared with the prior art, the present invention provides a device for preventing airway leakage when clearing airway secretions. When a sputum suction tube or a fiberoptic bronchoscope is inserted into the round hole from the outside, the inner wall of the round hole Close to the sputum suction tube or fiberoptic bronchoscope to ensure that there is no gap between the two. A one-way valve is set on the round hole, and there is a raised ridge. The natural position of the raised ridge is close to the round hole to ensure that the ventilation airway is not Air leak.

When the suction tube or fiberoptic bronchoscope is inserted into the round hole from outside to inside, the one-way valve is passively opened. When the suction tube or fiberoptic bronchoscope is withdrawn, the one-way valve returns to its natural position and closes the round hole again, thereby Ensure that the ventilated airway is leak-tight throughout the process of clearing the airway secretions.

Description of drawings

Fig. 1 is a schematic structural view of a preferred embodiment of a device for preventing airway leakage when clearing airway secretions according to the present invention.

detailed description

The present invention provides a device for preventing airway leakage when clearing airway secretions. In order to make the purpose, technical solution and advantages of the present invention clearer and clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

A preferred embodiment of the device for preventing airway leakage when removing airway secretions provided by the present invention is shown in Figure 1, which is a device for preventing airway leakage when removing airway secretions according to the present invention A schematic structural view of a preferred embodiment of the device, the device comprising:

The connecting piece 300 arranged between the tracheal intubation tube 100 and the ventilation circuit 200 can also be a connecting piece between the nasal mask and the ventilation circuit or between the nasal mask and the ventilation circuit. The connecting piece 300 is a three-way T-shaped connecting tube , including a transverse guide tube and a ventilation circuit port 330 set on the side of the guide tube, the two ends of the guide tube are respectively provided with a first port 310 and a second port 320, wherein the first port 310 is used to connect the trachea Intubation tube, nasal mask or nasal mask, and then into the patient's end; and the second port 320 is used to insert suction tube or fiberoptic bronchoscope (not shown in the figure) to remove remaining on the inner wall of the ventilation airway Secretion; the ventilation circuit port 330 is connected to the ventilation circuit 200 (generally a ventilation circuit tube) to provide a circulation circuit for the entire respiratory system.

Further, as shown in FIG. 1 , the second port 320 is a round hole, and a one-way valve 400 is arranged at the entrance of the round hole, which is used to close the round hole to prevent the sputum suction tube or fiberoptic bronchoscope from passing through the round hole. Airway leaks when secretions are cleared.

In a preferred embodiment of the present invention, as shown in Figure 1, the one-way valve 400 is hinged on the inner side of the connecting piece 300, and opens or closes the circular hole in a rotating manner, in order to achieve better sealing As a result, the one-way valve 400 can be a flexible one-way valve made of rubber material.

Among them, the one-way valve 400 is more preferably an inward-opening one-way valve, and when the one-way valve 400 is in a natural state, it is close to the round hole to prevent air leakage. When the suction tube or fiberoptic bronchoscope is inserted from the outside When the round hole is opened, the one-way valve is passively opened due to external force; when the suction tube or fiberoptic bronchoscope is withdrawn, the one-way valve returns to its natural state and closes the round hole again, so as to ensure that the airway secretions are cleared throughout. The ventilation airway is leak-tight during the procedure.

Further, a ridge 410 is provided on the one-way valve 400 , see FIG. 1 for details. Wherein, the peak of the ridge 410 is located at the center of the one-way valve 400 . The setting of the raised ridge 410 is to further seal the sealing effect. When the one-way valve 400 closes the round hole, the raised ridge 410 completely covers the whole round hole, and the surface of the raised ridge 410 is close to the inside of the round hole. The edge can better seal the round hole and ensure that the ventilation airway does not leak.

In a preferred embodiment of the present invention, in terms of material selection, the ridge is more preferably made of elastic material, which can be plastic, metal or any other material with elastic recoverability. The reason is that when the elastic material is used as a sealing structure , can achieve a good airtight effect, ensure that there will be no gaps, and avoid air leakage.

In a preferred embodiment of the present invention, as shown in Figure 1, the inner wall of the round hole is also attached with an elastic material layer 321. When the sputum suction tube or fiberoptic bronchoscope penetrates the round hole, the inner wall of the round hole is close to the sputum suction tube or Fiberoptic bronchoscope, to ensure that there is no gap between the round hole and the suction tube or between the round hole and the fiberoptic bronchoscope. For this reason, in terms of the aperture design requirements of the round hole, its diameter ranges from 3 to 10 mm, which is generally slightly smaller than the outer diameter of the suction tube or fiberoptic bronchoscope.

Further, at least three equidistant slits (not shown in the figure) with a depth of 1 to 3 mm are provided on the elastic material layer 321 , and when the suction tube or fiberoptic bronchoscope is inserted into the round hole, it will interact with the elastic material layer 321 . The material layer 321 forms a natural extrusion. In order to reduce the obstruction of extrusion when the suction tube or fiberoptic bronchoscope enters and exits the round hole, the setting of the crack can appropriately reduce the extrusion resistance.

To sum up, the present invention provides a device for preventing airway leakage when clearing airway secretions, including a device installed between the endotracheal tube and the ventilation circuit, between the nasal mask and the ventilation circuit, or between the nasal mask and the ventilation circuit There is a connecting piece between them, a round hole is opened on the connecting piece, and a one-way valve for closing the round hole is arranged at the entrance of the round hole. Compared with the prior art, the present invention provides a device for preventing airway leakage when clearing airway secretions. When a sputum suction tube or a fiberoptic bronchoscope is inserted into the round hole from the outside, the inner wall of the round hole Close to the sputum suction tube or fiberoptic bronchoscope to ensure that there is no gap between the two. A one-way valve is set on the round hole, and there is a raised ridge. The natural position of the raised ridge is close to the round hole to ensure that the ventilation airway is not Air leak.

It should be understood that the application of the present invention is not limited to the above examples, and those skilled in the art can make improvements or transformations according to the above descriptions, and all these improvements and transformations should belong to the protection scope of the appended claims of the present invention.

Claims (4)

1. the device preventing air flue from leaking gas when removing airway secretions, comprise: be arranged on the connector between tracheal intubation and ventilating return, between nose cup and ventilating return or between nasal mask and ventilating return, it is characterized in that, described connector offering circular hole, being provided with one in the porch of described circular hole for closing the one-way cock of described circular hole;

Described connector is the T-shaped connection tube of threeway, comprise horizontal conduction pipe and the ventilating return port being opened in conduction pipe sidepiece, conduction pipe two ends are respectively arranged with the first port and the second port, wherein, described first port connects tracheal intubation, nose cup or nasal mask, described second port is a circular hole, and in order to insert sputum aspirator tube or branchofiberoscope, described ventilating return port connects ventilating return;

Described one-way cock is provided with convex ridge;

The convex peak of described convex ridge is positioned at the center of described one-way cock;

Described convex ridge is the convex ridge be made up of elastomeric material;

The inwall of described circular hole is provided with elastomeric layer;

Described elastomeric layer is provided with that at least three equidistant and the degree of depth is the crack of 1 ~ 3mm.

2. the device preventing air flue from leaking gas during removing airway secretions according to claim 1, is characterized in that, described one-way cock is flexible check valve door.

3. the device preventing air flue from leaking gas during removing airway secretions according to claim 1, is characterized in that, described one-way cock is hinged on the inner side of described connector, and opens or closes described circular hole in a rotating manner.

4. the device preventing air flue from leaking gas during removing airway secretions according to claim 1, is characterized in that, the diameter of described circular hole is 3 ~ 10mm.