CN114796770B - Artificial airway air bag for multi-point position bag wall pressure measurement - Google Patents

Abstract

The invention discloses an artificial airway airbag for multi-point pressure measurement of the bag wall, which belongs to the technical field of medical equipment. The artificial airway airbag for multi-point capsule wall pressure measurement includes: a hose and a capsule; the capsule is arranged on the outer wall of the end of the hose, the capsule communicates with the inflation device, and the outer capsule wall of the capsule is uniformly divided into multiple parts Each flexible pressure sensor is electrically connected to the processor and the display; the inflation device includes a connecting tube, a deflation valve, a first one-way valve, an inflatable bag and a second one-way valve, and the connecting tube communicates with the inner cavity of the bag body and the inner cavity of the inflatable bag, the deflation valve and the first one-way valve are all arranged on the connecting pipe; the artificial airway airbag for multi-point bag wall pressure measurement of the present invention can quickly and accurately measure the bag wall and the pressure inside the bag Value, thus indirectly reflecting the force between the patient's trachea and the air bag, so as to control the inflation of the air bag more accurately, and avoid over-inflation causing tracheal mucosal damage and under-inflation causing air leakage and aspiration.

Description

A kind of artificial airway airbag with multi-point bag wall pressure measurement

technical field

The invention relates to the technical field of medical equipment, in particular to an artificial airway airbag for multi-point pressure measurement of the bag wall.

Background technique

The artificial airway involved in the present invention refers to a special endotracheal catheter inserted through the patient's glottis or trachea. Optimal conditions;

When using an artificial airway, it is necessary to inflate the airbag to seal the airway to facilitate mechanical ventilation and prevent aspiration. In clinical practice, overinflation of the airbag can cause local tracheomalacia, mucosal damage, and even tracheoesophageal fistula, etc. Insufficient airbag inflation can lead to aspiration of oropharyngeal secretions and reflux into the lower respiratory tract, resulting in ventilator-associated pneumonia. Because the existing tracheal intubation indirectly reflects the interaction force between the outer wall of the air bag and the inner wall of the trachea by measuring the average pressure in the air bag, because the cross-section of the human trachea is an irregular cavity (the human body will make the trachea when lying on its side or lying down). The cross-sectional shape changes to a certain extent), during use, there will be a situation as shown in Figure 4. Point A has touched the tracheal wall, and point B has not yet touched the tracheal wall. Therefore, when the existing airbag pressure measures the pressure at the cross-section as shown in Figure 4, it cannot accurately and intuitively know the compression situation of the specific position of the airbag on the tracheal wall, which is not conducive to the doctor's specific judgment and treatment. . In addition, the current routine artificial airway airbag management still adopts intermittent pressure monitoring, which cannot achieve continuous pressure monitoring well.

Contents of the invention

The purpose of the present invention is to overcome the problems in the prior art and provide an artificial airway airbag for multi-point pressure measurement of the bag wall.

The invention provides an artificial airway airbag for multi-point capsule wall pressure measurement, which includes a flexible tube and a capsule body; The wall is evenly divided into multiple flexible pressure sensors, and each flexible pressure sensor is electrically connected to the processor and the display.

Preferably, the inflation device includes a connecting pipe, a deflation valve, a first one-way valve, an inflatable bag and a second one-way valve, the connecting pipe communicates with the inner chamber of the bag body and the inner chamber of the inflatable bag, the deflated valve and the second one-way valve. The first one-way valves are all arranged on the connecting pipe, and the first one-way valves are located between the discharge valve and the inflatable bag, and the inflatable bag is provided with a second one-way valve.

Preferably, the outer wall of the hose is provided with a gas pressure sensor, and the gas pressure sensor is also located in the cavity of the capsule, and the gas pressure sensor is electrically connected to the processor.

Preferably, part of the connecting tube is passed through the flexible tube, and the end of the connecting tube passes through the tube wall of the flexible tube and communicates with the inner cavity of the capsule.

Preferably, the connection lines of the gas pressure sensor and the plurality of flexible pressure sensors are buried in the tube wall of the hose.

Preferably, the tube wall of the hose is provided with a plurality of connecting rods along its length direction, two adjacent connecting rods are hinged by hinge shafts, and each hinge shaft is perpendicular to the length direction of the hose.

Preferably, the connecting rod at the end away from the capsule passes through the tube wall of the tube and is located outside the tube.

Preferably, the outer wall of the hose is provided with scales.

Preferably, the flexible pressure sensor is a piezoelectric film sensor.

Compared with the prior art, the beneficial effect of the present invention is that the artificial airway airbag for multi-point capsule wall pressure measurement of the present invention can not only measure the pressure value in the capsule, but also measure the pressure of different points of the capsule wall. Pressure value, through the processing of the two pressure values, on the one hand, the pressure of the balloon on the patient's trachea wall can be measured, and on the other hand, the pressure value can be displayed on the 3D model of the balloon, and then quickly judge the impact of the balloon on the patient's trachea. The pressure of specific parts. In order to reduce the problem that the difference between the position angle of the capsule body and the standard position is too large, resulting in the mismatch between the detection value on the 3D model and the measurement position of the trachea during measurement, a plurality of connecting rods that are hinged to each other in turn are designed in the tube wall. The angular position of the capsule can be judged by observing the angular position of the connecting rod in vitro. The artificial airway airbag for multi-point bag wall pressure measurement of the present invention can monitor the force between the patient's trachea and the airbag, thereby more accurately controlling the inflation of the airbag, and avoiding damage to the tracheal mucosa caused by over-inflation and air leakage and damage caused by under-inflation. Aspiration; at the same time, the invention can display the three-dimensional pressure distribution of the airbag in the trachea, which is more conducive to medical staff to adjust the position and angle of the artificial airway.

Description of drawings

Fig. 1 is a sectional view of the present invention;

Fig. 2 is the partial enlarged view of Fig. 1 of the present invention;

Fig. 3 is the connection schematic diagram of connecting rod of the present invention;

Fig. 4 is a schematic cross-sectional view of the trachea of the present invention.

Explanation of reference signs:

1. Hose, 2. Capsule, 3. Flexible pressure sensor, 4. Connecting pipe, 5. Discharge valve, 6. First one-way valve, 7. Inflatable bag, 8. Second one-way valve, 9. Gas Pressure sensor, 10. connecting line, 11. connecting rod, 12. hinged shaft, 13. trachea.

Detailed ways

Specific embodiments of the present invention are described in detail below, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

The present invention provides an artificial airway airbag for multi-point capsule wall pressure measurement, as shown in Figure 1-2-4, including: a hose 1 and a capsule body 2; The body 2 communicates with the inflatable device, and the outer wall of the capsule body 2 is evenly divided into a plurality of flexible pressure sensors 3 , and each flexible pressure sensor 3 is electrically connected to the processor and the display.

Insert the end of the flexible tube 1 with the capsule 2 into the trachea 13 of the human body, and the inflator fills the capsule 2 with an appropriate amount of gas, so that the capsule 2 expands and touches the trachea 13. After the capsule 2 expands, point A contacts To the inner wall of the trachea 13, a plurality of flexible pressure sensors 3 all send the detected pressure signals to the processor. Since the flexible pressure sensor 3 at point A is supported by the trachea 13, the flexible pressure sensor 3 at point B does not Due to the support force of the trachea 13, the pressure values at point A and point B must be different. After the processor processes the signals at each point, the 3D model of the capsule 2 is displayed on the display, and the contact point can be found on the model. Different pressure values are displayed intuitively through different colors. Doctors can judge the pressure status at point A at the moment through the difference in pressure values, and then judge the health status of the patient's trachea 13. Because each flexible pressure The position detected by the sensor 3 is different, and the orientation of the detected point A at the cross-section as shown in Fig. 4 can also be judged at this moment, which ensures the accuracy of the detection.

Preferably, the inflation device as shown in FIG. 1 includes a connecting pipe 4, a deflation valve 5, a first one-way valve 6, an inflatable bag 7 and a second one-way valve 8, and the connecting pipe 4 communicates with the inner cavity of the bag body 2 and In the inner cavity of the air bag 7, the deflation valve 5 and the first one-way valve 6 are all arranged on the connecting pipe 4, and the first one-way valve 6 is located between the deflation valve 5 and the inflatable bag 7, and the inflatable bag 7 is provided with a second Two one-way valves 8.

Both the first one-way valve 6 and the second one-way valve 8 can make the gas in the inflatable bag 7 flow into the bag body 2, open the deflation valve 5 before use, and insert the end of the hose 1 provided with the bag body 2 into the human body trachea 13 After filling, close the deflation valve 5, squeeze the inflatable bag 7, and inflate the capsule body 2; after use, open the deflation valve 5, and after the capsule body 2 deflates and shrinks, the hose 1 can be pulled out.

Preferably, as shown in Figures 1-4, the outer wall of the hose 1 is provided with a gas pressure sensor 9, and the gas pressure sensor 9 is also located in the cavity of the capsule 2, and the gas pressure sensor 9 is electrically connected to the processor.

The gas pressure sensor 9 is used to detect the pressure in the cavity of the capsule body 2, and transmits the pressure signal to the processor, and the processor makes a difference between this signal and the pressure value signal at each point on the outer surface of the capsule body 2 received at the same time. After the value analysis, the interaction force between the airbag and the tracheal wall can be obtained, which can directly reflect the state of the airbag in the trachea, so as to more accurately control the inflation of the airbag and adjust the position and angle of the artificial airway.

The gas pressure sensor 9 is used to detect the average pressure in the cavity of the capsule body 2, and the average pressure represents the pressure at point B in Figure 4. At the same time, the processor can receive the pressure at each point on the outer surface of the capsule body 2 Value signal, and after processing the pressure signal at each point, the 3D model of capsule 2 is displayed in different colors; since point A is also subject to the gas pressure in capsule 2, the doctor can observe point A and point B The difference in the pressure values at the points determines the outline shape of the patient's trachea. If the difference is smaller, the outline of the patient's trachea 13 is rounder. If the difference is larger, the outline of the patient's trachea 13 is flatter or the point A is more prominent. Provides an important reference for doctors to judge the patient's condition.

Preferably, as shown in FIG. 1 , part of the connecting pipe 4 is passed through the hose 1, and the end of the connecting pipe 4 passes through the wall of the hose 1 and communicates with the inner cavity of the capsule body 2; the gas pressure sensor 9 The connecting wires 10 with multiple flexible pressure sensors 3 are all embedded in the pipe wall of the hose 1 .

The purpose is to improve the patient's experience when using the artificial airway airbag for multi-point bag wall pressure measurement, and prevent the connecting tube 4 and the connecting line 10 from scratching the patient's trachea 13 and throat; the connecting line 10 is electrically connected to the processor.

Preferably, as shown in Figures 1-3, the tube wall of the hose 1 is provided with a plurality of connecting rods 11 along its length direction, and two adjacent connecting rods 11 are hinged by hinge shafts 12, and each hinge shaft 12 is perpendicular to the flexible pipe. The length direction of the tube 1 ; the connecting rod 11 at the end away from the capsule 2 passes through the tube wall of the tube 1 and is located outside the tube 1 .

Because the artificial airway airbag of this multi-point capsule wall pressure measurement can display the 3D model of the capsule body 2 on the monitor when in use, after the capsule body 2 is inserted into the patient's trachea 13, the capsule body 2 cannot be rotated arbitrarily, and every When using the second measurement, the position angle of the capsule body 2 should be the same to avoid the large difference between the position angle of the capsule body 2 and the standard position, resulting in the problem that the detection value on the 3D model does not correspond to the measurement position of the trachea during measurement. Designing the above-mentioned structure, multiple connecting rods 11 are hinged to each other so that the hose 1 can be bent along the length of the hose 1, and at the same time, the different sections of the hose 1 will not be twisted relative to each other. For the standard reference plane, you only need to rotate the connecting rod 11 every time you use it, so that the planes where multiple connecting rods 11 are located coincide with the reference plane, and the connecting rods 11 are located closer to the mandible to complete the determination of the angular position of the capsule body 2 .

Preferably, the outer tube wall of the hose 1 is provided with scales.

Preferably, the flexible pressure sensor 3 is a piezoelectric film sensor.

The using method of the artificial airway air bag of multi-point bag wall pressure measurement of the present invention is as follows:

First, open the vent valve 5 before use, insert the end of the hose 1 with the capsule 2 into the human trachea 13 at an appropriate position; then, rotate the connecting rod 11 so that the plane where the connecting rods 11 are located coincides with the reference plane, and The connecting rod 11 is located closer to the lower jaw; then, close the deflation valve 5, squeeze the inflatable bag 7, and inflate the bag body 2, and the doctor analyzes, judges, and treats the condition of the artificial airway airbag by observing the measurement data on the display ; Finally, after the use is completed, open the vent valve 5, and after the capsule 2 deflates, it shrinks, and the hose 1 can be pulled out.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (7)

1. An artificial airway balloon for multi-point wall pressure measurement, comprising:

a hose (1);

the bag body (2) is arranged on the outer wall of the end part of the hose (1), the bag body (2) is communicated with the air charging device, the outer side bag wall of the bag body (2) is uniformly divided into a plurality of flexible pressure sensors (3), and each flexible pressure sensor (3) is electrically connected with the processor and the display;

the outer wall of the hose (1) is provided with a gas pressure sensor (9), the gas pressure sensor (9) is also positioned in the cavity of the bag body (2), and the gas pressure sensor (9) is electrically connected with the processor;

the pipe wall of the hose (1) is provided with a plurality of connecting rods (11) along the length direction of the hose, two adjacent connecting rods (11) are hinged through a hinge shaft (12), and each hinge shaft (12) is perpendicular to the length direction of the hose (1).

2. The artificial airway balloon for measuring pressure by the multi-point balloon wall according to claim 1, wherein the inflating device comprises a connecting pipe (4), an air release valve (5), a first one-way valve (6), an inflating balloon (7) and a second one-way valve (8), the connecting pipe (4) is communicated with the inner cavity of the balloon body (2) and the inner cavity of the inflating balloon (7), the air release valve (5) and the first one-way valve (6) are arranged on the connecting pipe (4), the first one-way valve (6) is arranged between the air release valve (5) and the inflating balloon (7), and the second one-way valve (8) is arranged on the inflating balloon (7).

3. The artificial airway balloon for multi-point balloon wall pressure measurement according to claim 2, wherein the part of the connecting tube (4) is penetrated in the hose (1), and the end part of the connecting tube (4) penetrates through the tube wall of the hose (1) and is communicated with the inner cavity of the balloon body (2).

4. The artificial airway balloon for multi-point balloon wall pressure measurement according to claim 1, wherein the connecting lines (10) of the gas pressure sensor (9) and the plurality of flexible pressure sensors (3) are buried in the tube wall of the hose (1).

5. The artificial airway balloon for multi-point balloon wall pressure measurement according to claim 1, wherein a connecting rod (11) at the end far away from the balloon body (2) penetrates out of the tube wall of the hose (1) and is positioned outside the hose (1).

6. The artificial airway balloon for multi-point balloon wall pressure measurement according to claim 1, wherein the outer tube wall of the hose (1) is provided with graduations.

7. The artificial airway balloon for multi-point balloon wall pressure measurement according to claim 1, wherein the flexible pressure sensor (3) is a piezoelectric film sensor.

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