CN114796770B

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

Info

Publication number: CN114796770B
Application number: CN202210451026.2A
Authority: CN
Inventors: 王鹏; 张娇; 周梦云; 黄巧云; 梅红; 王晓敏; 苏丹
Original assignee: West China Hospital of Sichuan University
Current assignee: West China Hospital of Sichuan University
Priority date: 2022-04-24
Filing date: 2022-04-24
Publication date: 2023-07-04
Anticipated expiration: 2042-04-24
Also published as: CN114796770A

Abstract

The invention discloses an artificial airway air bag for measuring pressure of multi-point air bag walls, and belongs to the technical field of medical equipment. This artifical air flue gasbag of multiple spot cyst wall pressure measurement includes: a hose and a bladder; the bag body is arranged on the outer wall of the end part of the hose and is communicated with the air charging device, the outer side bag wall of the bag body is uniformly distributed with a plurality of flexible pressure sensors, and each flexible pressure sensor is electrically connected with the processor and the display; the inflation device comprises a connecting pipe, an air release valve, a first one-way valve, an inflation bag and a second one-way valve, wherein the connecting pipe is communicated with the inner cavity of the bag body and the inner cavity of the inflation bag; the artificial airway balloon for multi-point balloon wall pressure measurement can rapidly and accurately measure the balloon wall and the balloon pressure value of the balloon, thereby indirectly reflecting the acting force between the trachea of a patient and the balloon, further accurately controlling the inflation of the balloon and avoiding the damage of the mucosa of the trachea caused by over inflation and the leakage and the aspiration caused by under inflation.

Description

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

Technical Field

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

Background

The artificial airway related by the invention is a special endotracheal tube which is placed through the glottis of a patient or through the trachea, and the artificial airway can provide optimal conditions for the airway to be unobstructed, mechanical ventilation, oxygen therapy, respiratory tract suction, error suction prevention and the like;

when using an artificial airway, it is necessary to achieve a sealed airway by inflating the balloon to facilitate mechanical ventilation and prevent aspiration. In clinic, partial tracheae softening, mucosa injury, even tracheoesophageal fistula and the like can be caused by overinflation of the air sac, and respiratory-related pneumonia can be caused by aspiration of oropharyngeal secretion and reflux substances to the lower respiratory tract due to insufficient inflation of the air sac. Because the prior trachea cannula indirectly reflects the interaction force between the outer wall and the inner wall of the trachea by measuring the average pressure in the air bag, because the section of the trachea of a human body is an irregular cavity gap (the section shape of the trachea can change to a certain extent when the human body lies on one side or lies on the other side), the condition shown in figure 4 exists in the use process, the point A is already contacted with the wall of the trachea, the point B is not yet contacted with the wall of the trachea, and if the trachea is continuously inflated, the air bag can cause compressive damage to the point A of the wall of the trachea, so that the pressure of the section shown in figure 4 can not be accurately and intuitively known when the pressure of the air bag to the specific position of the wall of the trachea is measured by the prior air bag, and the method is not beneficial to specific judgment and treatment of doctors. In addition, at present, intermittent pressure monitoring is still adopted in conventional artificial airway air bag management, and pressure continuous monitoring cannot be well achieved.

Disclosure of Invention

The invention aims to overcome the problems in the prior art and provides an artificial airway air bag for measuring pressure of a multi-point balloon wall.

The invention provides an artificial airway air bag for measuring pressure of multi-point air bag walls, which comprises a hose and a bag body; the bag body is arranged on the outer wall of the end part of the hose and is communicated with the air charging device, the outer side bag wall of the bag body is uniformly distributed with a plurality of flexible pressure sensors, and each flexible pressure sensor is electrically connected with the processor and the display.

Preferably, the air charging device comprises a connecting pipe, an air release valve, a first one-way valve, an air charging bag and a second one-way valve, wherein the connecting pipe is communicated with the inner cavity of the bag body and the inner cavity of the air charging bag, the air release valve and the first one-way valve are arranged on the connecting pipe, the first one-way valve is arranged between the air release valve and the air charging bag, and the air charging bag is provided with the second one-way valve.

Preferably, the outer wall of the hose is provided with a gas pressure sensor, the gas pressure sensor is also positioned in the cavity of the bag body, and the gas pressure sensor is electrically connected with the processor.

Preferably, the part of the connecting pipe penetrates through the hose, and the end part of the connecting pipe penetrates through the wall of the hose and is communicated with the inner cavity of the bag body.

Preferably, the connecting lines of the gas pressure sensor and the flexible pressure sensors are buried in the pipe wall of the hose.

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

Preferably, the connecting rod at one end far away from the bag body penetrates out of the tube wall of the hose and is positioned outside the hose.

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

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

Compared with the prior art, the invention has the beneficial effects that: the artificial airway air bag for measuring the pressure of the multi-point balloon wall can measure the pressure value in the balloon body and the pressure value of different points of the balloon wall of the balloon body, and the pressure of the balloon body on the balloon wall of a patient is measured on one hand by processing the pressure values of the balloon body and the pressure value of the balloon wall of the patient on the other hand by processing the pressure values of the balloon body and the pressure value of the balloon wall of the balloon body on the 3D model of the balloon body, so that the pressure condition of the air bag on the specific part of the trachea of the patient is rapidly judged. In order to reduce the problem that the difference between the position angle of the capsule body and the standard position is too large, which results in the non-correspondence between the detection value on the 3D model and the measuring position of the air pipe during measurement, a plurality of connecting rods which are hinged with each other in sequence are designed in the tube wall of the hose and are used for observing the angle position of the connecting rods in vitro, so that the angle position of the capsule body can be judged. The artificial airway balloon for multi-point balloon wall pressure measurement can more accurately control the inflation of the balloon by monitoring the acting force between the trachea of a patient and the balloon, and avoid the damage of the mucosa of the trachea caused by over inflation and the air leakage and aspiration caused by under inflation; meanwhile, the invention can display the three-dimensional pressure distribution of the air bag in the air pipe, thereby being more beneficial to the medical staff to adjust the position and the angle of the artificial airway.

Drawings

FIG. 1 is a cross-sectional view of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 in accordance with the present invention;

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

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

Reference numerals illustrate:

1. the flexible air bag comprises a hose, a bag body, a flexible pressure sensor, a connecting pipe, a gas release valve, a first one-way valve, a gas filling bag, a second one-way valve, a gas pressure sensor, a connecting wire, a connecting rod, a hinge shaft and a gas pipe.

Detailed Description

The following detailed description of specific embodiments of the invention is, but it should be understood that the invention is not limited to specific embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The invention provides an artificial airway balloon for measuring pressure of a multi-point balloon wall, which comprises the following components in fig. 1-2-4: a hose 1 and a bladder 2; 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 distributed with a plurality of flexible pressure sensors 3, and each flexible pressure sensor 3 is electrically connected with the processor and the display.

The flexible pipe 1 is provided with one end of the bag body 2 and is inserted into the human trachea 13, the air charging device charges a proper amount of air into the bag body 2, so that the bag body 2 is inflated and is in contact with the trachea 13, the point A is in contact with the inner wall of the trachea 13 after the bag body 2 is inflated, the plurality of flexible pressure sensors 3 send detected pressure signals to the processor, the flexible pressure sensor 3 at the point A is subjected to the supporting force of the trachea 13, the flexible pressure sensor 3 at the point B is not subjected to the supporting force of the trachea 13, therefore, the pressure values at the point A and the point B are necessarily different, the processor processes the signals at the points and then displays a 3D model of the bag body 2 through the display, the pressure values of the contact points can be found out on the model, the different pressure values are intuitively represented through different colors, a doctor can judge the pressure condition at the point A at the moment through the difference of the pressure values, and further judge the health condition of the trachea 13 of a patient, and the accuracy of the detected point A at the position as shown in the figure 4 can be ensured.

Preferably, the inflator device as shown in fig. 1 includes a connecting pipe 4, a release valve 5, a first check valve 6, an inflatable bag 7 and a second check valve 8, the connecting pipe 4 is communicated with the inner cavity of the bag body 2 and the inner cavity of the inflatable bag 7, the release valve 5 and the first check valve 6 are both arranged on the connecting pipe 4, the first check valve 6 is located between the release valve 5 and the inflatable bag 7, and the inflatable bag 7 is provided with the second check valve 8.

The first check valve 6 and the second check valve 8 can enable the gas in the inflatable bag 7 to flow into the bag body 2, before use, the air release valve 5 is opened, one end of the hose 1 provided with the bag body 2 is inserted into the human trachea 13, and then the air release valve 5 is closed to squeeze the inflatable bag 7 to inflate the bag body 2; after the use is completed, the air release valve 5 is opened, the bag body 2 is contracted after being deflated, and the hose 1 is pulled out.

Preferably, the outer wall of the hose 1 is provided with a gas pressure sensor 9 as described in fig. 1-4, 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 for detecting the pressure in the cavity of the balloon body 2 and transmitting a pressure signal to the processor, and the processor can obtain the interaction force between the balloon and the tracheal wall after carrying out differential analysis on the signal and the pressure value signal of each point on the outer surface of the balloon body 2, which is received simultaneously, so as to intuitively reflect the state of the balloon in the trachea, thereby controlling the inflation of the balloon and adjusting the position and angle of the artificial airway more accurately.

The gas pressure sensor 9 is used for detecting the average pressure in the cavity of the capsule body 2, the average pressure represents the pressure at the point B in fig. 4, meanwhile, the processor can receive the pressure value signals of each point at the outer surface of the capsule body 2, and the pressure signals of each point are processed and then are reflected in the 3D model of the capsule body 2 through different colors; because the point A is also subjected to the gas pressure in the bag body 2, a doctor can judge the shape of the outline in the patient's trachea by observing the difference of the pressure values at the point A and the point B, if the difference is smaller, the outline of the patient's trachea 13 is more round, and if the difference is larger, the outline of the patient's trachea 13 is flatter or the point A is more prominent, so that an important reference is provided for the doctor to judge the patient condition.

Preferably, as shown in fig. 1, a part of the connecting pipe 4 is arranged in the hose 1 in a penetrating way, and the end part of the connecting pipe 4 passes through the pipe wall of the hose 1 and is communicated with the inner cavity of the bag body 2; the gas pressure sensor 9 and the connecting wires 10 of the flexible pressure sensors 3 are buried in the pipe wall of the hose 1.

The purpose is to improve the use experience of a patient when using the artificial airway air bag for measuring pressure by the multi-point air bag wall, and prevent the connecting pipe 4 and the connecting wire 10 from scratching the trachea 13 and the throat of the patient; the connection line 10 is electrically connected to the processor.

Preferably, as shown in fig. 1-3, the pipe wall of the hose 1 is provided with a plurality of connecting rods 11 along the length direction thereof, 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; the connecting rod 11 at the end far away from the bag body 2 penetrates out of the pipe wall of the hose 1 and is positioned outside the hose 1.

Because this artifical air flue gasbag of multiple spot cyst wall pressure measurement can show the 3D model of cell body 2 on the display when using, therefore after cell body 2 inserts patient's trachea 13, cell body 2 can not rotate at will, and the position angle of cell body 2 should be the same when measuring at every turn, in order to avoid cell body 2's position angle and standard position discrepancy too big, lead to the problem that the detection value on the 3D model and the trachea measurement position when measuring do not correspond, design above-mentioned structure for this, a plurality of connecting rods 11 are articulated each other can make hose 1 crooked along the length direction of hose 1, simultaneously make the different cross-sections of hose 1 can not take place to twist reverse, regard as standard reference plane with the symmetry plane of human eyebrow center-nose point department, only rotate connecting rod 11 when using at every turn, make the plane and the reference plane coincidence of a plurality of connecting rods 11 place, and connecting rod 11 are located and are close to the determination of angle position of cell body 2 can be accomplished to one side of mandible.

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

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

The application method of the artificial airway balloon for multi-point balloon wall pressure measurement comprises the following steps:

firstly, before use, the air release valve 5 is opened, and one end of the hose 1 provided with the bag body 2 is inserted into a proper position in the human trachea 13; then, the connecting rods 11 are rotated so that the planes of the plurality of connecting rods 11 coincide with the reference plane, and the connecting rods 11 are positioned on the side closer to the lower jaw; then, closing the air release valve 5, squeezing the air inflation bag 7 to inflate the bag body 2, and analyzing, judging and disposing the condition of the artificial airway air bag by a doctor through observing the measurement data on the display; finally, after the use is finished, the air release valve 5 is opened, the bag body 2 is contracted after being deflated, and the hose 1 is pulled out.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

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.