CN112156306B - Trachea cannula for monitoring cuff pressure in real time - Google Patents

Abstract

The invention discloses a trachea cannula for monitoring cuff pressure in real time, which comprises a pressure monitoring display device, an inflation tube, an elastic film, a cuff and a tube body; wherein, one end of the tube body is a machine connecting end, the other end is a patient connecting end, and the cuff is sleeved on the tube body close to the patient connecting end; one end and the cover of gas tube intercommunication, the other end and pressure monitoring display device intercommunication, elastic film installs on pressure monitoring display device, and pressure monitoring display device includes pressure sensor, circuit, digital screen and power module, and pressure sensor, digital screen and circuit connection, pressure sensor are used for gathering the pressure of cover bag, and power module is used for supplying power for pressure monitoring display device. The whole trachea cannula is of an integrated structure, wherein the inflation inlet and the pressure monitoring display device are integrated together, the comprehensive judgment can be carried out by combining an empirical judgment method and a pressure real-time monitoring display method, and the result reliability is high.

Description

An endotracheal intubation with real-time monitoring of cuff pressure

technical field

The invention belongs to the field of medical devices, in particular to a tracheal intubation tube for real-time monitoring of cuff pressure.

Background technique

Endotracheal intubation is a technique of inserting a special endotracheal tube into the human trachea. This technique has become an important measure in the process of cardiopulmonary resuscitation and rescue of critically ill patients with respiratory dysfunction. The cuff is located at the lower part of the endotracheal tube, and its main functions are: fixation, keeping the endotracheal tube in the center of the trachea, avoiding damage to the tracheal mucosa at the front of the tube; sealing, preventing air leakage, and ensuring the supply of tidal volume; preventing aspiration, oropharynx Aspiration of part of the secretion and gastric contents after regurgitation reduces infection. If the cuff inflation pressure is too high or too low or if air leakage occurs, it will cause harm to the patient. When the gas overflows from the weak part of the cuff and loses the leak-proof performance, it will cause local mucosal oppressive ischemia and cause circular scar after recovery. Tracheal stenosis leads to dilation of the trachea, damage to the posterior wall of the trachea, and long-term excessive intrasac pressure causes tracheomalacia or necrosis.

The main methods and devices for cuff pressure monitoring currently available on the market are: (1) Finger pinch method. The finger pinch method relies on the personal experience of medical staff to inflate the catheter cuff, and the average pressure measured by finger pinch is too high or too low. Low, but because there is no fixed reference standard, it is difficult to achieve the expected effect due to the inaccurate estimation of pressure based on personal experience and finger feeling. (2) The airbag pressure gauge method can safely inflate the cuff by measuring the pressure of the cuff. The main foreign brands are VBMTM and AmbuTM, but the pressure needs to be monitored every 4-6 hours, and the cuff pressure cannot be monitored in real time. The operation is complicated. Meters are expensive. (3) Patent CN105233384A, a tracheal intubation tube that can automatically monitor the pressure of the balloon. This device uses a Bluetooth module to connect to an external terminal to monitor the pressure, but its pressure measurement module is placed inside the cuff, and it will enter the human body during intubation. The use process will affect the physiological environment of the human body, which is dangerous to people. At the same time, this separate structure requires an independent display terminal, which cannot easily read the pressure.

Contents of the invention

The object of the present invention is to provide a tracheal intubation tube for real-time monitoring of the cuff pressure, so as to solve the above-mentioned existing technical problems, and can monitor the cuff pressure automatically in real time in an integrated manner.

To achieve the above object, the present invention adopts the following technical solutions:

A tracheal intubation tube for real-time monitoring of cuff pressure, including a pressure monitoring and display device, an inflatable tube, an elastic film, a cuff and a tube body; wherein, one end of the tube body is a machine connection end, and the other end is a patient connection end, and the cuff Set on the tube body near the patient connection end;

One end of the inflatable tube communicates with the cuff, and the other end communicates with the pressure monitoring and display device. The elastic film is installed on the pressure monitoring and display device. The pressure monitoring and display device includes a pressure sensor, a circuit, a digital screen and a power module. The pressure sensor, the digital screen and the The circuit is connected, the pressure sensor is used to collect the pressure of the cuff, and the power module is used to supply power to the pressure monitoring and display device.

The further improvement of the present invention is that the inflation port on the pressure monitoring and display device adopts a one-way valve.

The further improvement of the present invention is that, when working, the signal output by the pressure sensor is sent to the digital screen to display the pressure at this time after being processed by the circuit.

The further improvement of the present invention lies in that the circuit is connected with two LED lamps, which can prompt or alarm according to the magnitude of the pressure.

A further improvement of the present invention is that the machine connection end of the tube body is used to connect with a ventilator or a breathing air bag, and the patient connection end is used to be fixed on the patient's mucous membrane.

The further improvement of the present invention lies in that the elastic film expands with the change of the gas pressure inside the device during the inflation process, so as to show whether the inflation process of the cuff is normal and the filling degree inside the cuff.

Compared with the prior art, the present invention has the following beneficial effects:

The entire tracheal intubation is an integrated structure, in which the inflation port is integrated with the pressure monitoring and display device, and can be judged comprehensively by combining empirical judgment and real-time pressure monitoring and display, and the results are highly reliable. (1) Compared with the traditional finger pinching method, which can only rely on personal experience to judge, the present invention can monitor the pressure of the cuff in real time, and display the pressure reading in real time through the human-computer interaction interface, so that the user can intuitively make quantitative judgments based on the results , the result is accurate. (2) Compared with the air bag manometer method, the present invention is small in volume and low in cost, can display the internal pressure of the cuff in real time, and is convenient to use. (3) Compared with the patented CN105233384A bluetooth-connected endotracheal intubation, the entire monitoring device is integrated with the inflation port, far away from the user, and the use environment is more stable. The working intensity is higher, the use is faster, and it can be used reliably in an emergency.

Description of drawings

Fig. 1 is the structural representation of the endotracheal intubation of real-time monitoring cuff pressure of the present invention;

Fig. 2 is a schematic diagram of the pressure monitoring and display device in Fig. 1 .

Explanation of reference signs:

1. Pressure monitoring and display device, 2. Inflatable tube, 3. Elastic film, 4. Cuff, 5. Tube body, 6. Machine connection end, 7. Patient connection end, 8. Pressure sensor, 9. Central control circuit, 10. Digital screen, 11. Power module, 12. Inflatable port.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figure 1, the tracheal intubation tube for real-time monitoring of cuff pressure provided by the present invention includes a pressure monitoring display device 1, an inflatable tube 2, an elastic film 3, a cuff 4, a tube body 5, a machine connection end 6 and a patient connection End 7. The specific structure of the pressure monitoring and display device 1 is shown in FIG. 2 , which includes a pressure sensor 8 , a central control circuit 9 , a digital display screen 10 , a power module 11 and an air charging port 12 . The front end of the pressure monitoring and display device 1 is connected to the inflation device through the inflation port 12, and the rear end is connected to the inflation tube 2. The upper part is equipped with an elastic film 3, and the bottom layer is a digital screen. The whole device is kept sealed. One end of the inflatable tube 2 is connected to the pressure monitoring and display device 1 , and the other end is connected to the cuff 4 . One end of the tube body 5 is a machine connection end 6 for connecting with a ventilator or a breathing airbag, and the other end is a patient connection end 7 fixed on the patient's mucous membrane.

The inflation port 12 in the pressure monitoring and display device 1 adopts a one-way valve, so that the whole device can be connected and sealed with the elastic film of the inflation tube 2 and the cuff 4 after the inflation is completed, ensuring that the elasticity changes with the inflation pressure during the inflation process. The membrane 3 will expand, so as to show whether the inflation process of the cuff is normal and the degree of filling inside the cuff. The medical staff can make empirical judgments based on the degree of deformation, and at the same time the digital screen at the bottom of the pressure monitoring display device 1 will display the current cuff pressure for prompting or alarming. And it is away from the machine connection end 6 and the patient connection end 7, and the safety is improved. The one-piece connection of the pressure monitoring and display device 1 takes up little space and is light in weight. After the inflation is completed, it can be allowed to droop naturally without affecting the use of the tube body 5 .

working principle:

As shown in Figure 1, the inflation port in the pressure monitoring and display device 1 adopts a one-way valve, so that the whole device can be kept closed with the inflation tube 2, the elastic film 3 and the cuff 4 after the inflation and inflation are completed, and the pressure at the cuff 4 Same as the pressure in the pressure monitoring and display device 1 , measuring the pressure at the cuff 4 only requires measuring the pressure at the pressure monitoring and display device 1 . As shown in Figure 2, the pressure monitoring and display device 1 and the elastic film 3 form a closed space together. At this time, the pressure sensor 8 can measure the pressure at the cuff 4, and then the pressure sensor 8 sends the measurement signal to the circuit 9, which drives the digital screen after processing. 10 displays the currently measured pressure value, and at the same time circuit 9 is connected with two LED lights, which can prompt or alarm according to the magnitude of the pressure. During the inflation process, the elastic membrane 3 will expand with the change of the gas pressure inside the device, so as to show whether the inflation process of the cuff is normal and the degree of filling inside the cuff. At this time, the medical staff can judge the degree of gas filling by empirical judgment, and comprehensively judge with the pressure displayed by the pressure monitoring and display device 1, whether to fill the cuff 4 with gas of sufficient pressure.

The whole working process of the present invention is, connect the whole endotracheal intubation according to Fig. 1, after ensuring that there will be no air leakage, fill the whole device with gas from the pressure monitoring and display device 1 gas charging port 12, during the inflation process With the pressure inflated, the entire cuff 4 and the elastic film 3 will be gradually filled, the pressure sensor 8 in the pressure monitoring and display device 1 is sealed with the entire cuff 4, the pressure sensed during the gradual inflation process rises, and the output is collected After being processed by the circuit 9, the pressure signal is sent to the digital screen 10 to display the pressure at this time, and at the same time, the two LED lights connected to the circuit 9 will prompt and alarm according to the pressure. The other modules of the power supply module 11 supply power. When the inflation pressure reaches the rated value, the inflation is stopped, and the inflation of the whole cuff is completed.

Claims (1)

1. A trachea cannula for monitoring the pressure of a cuff in real time is characterized by comprising a pressure monitoring display device (1), an inflation tube (2), an elastic film (3), the cuff (4) and a tube body (5); wherein,

one end of the tube body (5) is a machine connecting end (6), the other end is a patient connecting end (7), and the cuff (4) is sleeved on the tube body (5) close to the patient connecting end (7);

one end of the inflation tube (2) is communicated with the cuff (4), the other end of the inflation tube is communicated with the pressure monitoring display device (1), the elastic film (3) is installed on the pressure monitoring display device (1), the pressure monitoring display device (1) comprises a pressure sensor (8), a circuit (9), a digital screen (10) and a power module (11), the pressure sensor (8) and the digital screen (10) are connected with the circuit (9), the pressure sensor (8) is used for collecting the pressure of the cuff (4), and the power module (11) is used for supplying power to the pressure monitoring display device (1);

the machine connecting end (6) of the tube body (5) is used for being connected with a breathing machine or a breathing air bag, and the patient connecting end (7) is used for being fixed on the mucosa of a patient;

the inflation inlet (12) on the pressure monitoring display device (1) adopts a one-way valve; the circuit (9) is connected with two LED lamps, and can prompt or alarm according to the pressure;

during operation, pressure monitoring display device (1) forms airtight space together with elastic film (3), and pressure sensor (8) among pressure monitoring display device (1) are sealed together with whole cover bag (4), pressure sensor (8) measure cover bag (4) department pressure this moment, the signal of pressure sensor (8) output, send into digital screen (10) after circuit (9) are handled and show the pressure this moment, elastic film (3) can take place the inflation along with the change of the inside gas pressure of device in the inflation process, thereby show whether normal and the sufficient degree of cover bag inside of cover bag inflation process.

Images