CN203802913U - Artificial airway - Google Patents

Abstract

The utility model discloses an artificial air flue, in particular to an artificial air flue applied to the field of medical treatment and health. The utility model provides an artificial air passage which can simplify the monitoring of the pressure of an artificial air passage closed air bag, can automatically and safely regulate the pressure of the closed air bag in real time, and simultaneously can prevent misoperation so that the artificial air passage can be safely and stably maintained at an ideal pressure value, and comprises a conduit, a main joint, a closed air bag and an inflation tube, wherein the main joint is arranged at the end part of the conduit; one end of the inflation tube is communicated with the closed air bag, the other end of the inflation tube is communicated with the pressure indicating air bag, and the inflation tube further comprises a pressure safety valve. When the clinical staff injects gas at the inflation joint, the pressure of the closed air bag and the pressure interface is increased along with the increase of the injected gas, and once the pressure of the closed air bag and the pressure of the outer side pressure indicating air bag are too high to exceed the safety value of the pressure safety valve, the pressure safety valve opens, leaks and releases the pressure.

Description

artificial airway

technical field

The utility model relates to an artificial airway, in particular to an artificial airway applied in the medical and health field.

Background technique

Artificial airway refers to medical devices such as tracheal intubation and tracheotomy catheters for unobstructed airway and effective breathing management for critically ill patients. It is also an indispensable emergency medical device for rescuing patients with dyspnea and sudden respiratory arrest. The artificial airway in the prior art mainly includes a catheter, a main joint, a closed air bag and an inflatable tube, the closed air bag is arranged on the catheter, and the inside of the closed air bag is isolated from the inside of the catheter, and the main joint is arranged at the end of the catheter; one end of the inflatable tube is It communicates with the closed air bag, and the other end communicates with the pressure indicating air bag, and an inflation joint is arranged at the end of the inflation tube. The gas enters the pressure indicating airbag from the inflatable joint and is then inflated into the closed airbag along the inflatable tube. The pressure inside the closed airbag is controlled by injecting gas volume and evaluating the pressure indicating airbag pressure, which can effectively completely close the airway and prevent artificial airway In addition, it can reduce or even avoid serious complications such as airway mucosal ischemic injury and tracheoesophageal fistula. Therefore, the pressure of artificial airway sealing bags such as tracheal intubation and tracheotomy catheters can be precisely controlled so that it can Long-term maintenance at the theoretical ideal value is especially important for the treatment of patients. The touch method and estimation method are mostly used in the prior art. The touch method refers to the softer than the tip of the nose as the standard and the pressure indicating the hardness of the airbag connected to the closed airbag. The pressure of the airbag is checked by experience in each shift, and it is listed as a must-check content for each shift. It is also closely observed at ordinary times, but it is not routinely deflated. . The estimation method refers to observe the pressure change of the closed air bag by observing the outer pressure to indicate the hardness of the air bag based on the standard of pinching the air bag without flattening, and then deflate it once every 4 hours, and suck out the phlegm in the oropharynx, nostrils and trachea before each deflation Deflate the liquid for a few minutes, then regas 5-7ml. However, the steps of these methods in the prior art are cumbersome, and due to the different experience and feelings of different people, it is easy to cause air leakage in the small pressure airway or excessive pressure to cause artificial airway complications, so the aforementioned methods are greatly affected by the professional level of medical personnel. Some wards with better medical conditions use airbag manometers to test the pressure inside the airbag several times a day to ensure that the airway is well sealed and the pressure remains at an ideal value. The aforementioned methods are cumbersome and not easy to master in the actual operation process. In short, there is no artificial airway in the prior art that can automatically adjust the pressure of the closed air bag so that it can be stably maintained at an ideal pressure value.

Utility model content

The technical problem to be solved by the utility model is to provide an artificial airway that can automatically and safely control the pressure of the closed air bag, which facilitates the simplification of clinical operations and prevents misoperation, so that it can be safely and stably maintained at an ideal pressure value.

In order to solve the above-mentioned technical problems, the artificial airway adopted by the utility model includes a catheter, a main joint, a closed air bag and an inflatable tube. The closed air bag is arranged on the catheter, and the inside of the closed air bag is separated from the inside of the catheter. The end of the catheter; one end of the inflation tube communicates with the closed air bag, and the other end communicates with the pressure indicating air bag, and the end of the inflation tube is provided with an inflation joint, and also includes a pressure safety valve, and the pressure safety valve is provided with a pressure port, The pressure port of the pressure safety valve communicates with the inflation pipe.

Further, the pressure safety valve is composed of a valve body, a fixed core, an airtight ring and a spring, the fixed core is installed at one end of the valve body, and the pressure port is set at the other end of the valve body; the fixed core is provided with an air outlet window , one end of the spring is connected to the fixed core, and the other end is connected to the sealing ring, and the sealing ring is arranged at the pressure port of the valve body.

Further, the pressure safety valve communicates with the inflation pipe through the pressure control branch pipe, one end of the pressure control branch pipe is connected to the inflation pipe, and the other end enters the valve body through the pressure interface, and the sealing ring is located at the port of the pressure control branch pipe.

Further, a shielding cover is provided at the air outlet window.

Further, the pressure safety valve is a pilot-operated pressure safety valve.

The beneficial effects of the utility model are: since the pressure port of the pressure safety valve communicates with the closed air bag and the outer pressure indicating air bag through the inflatable tube, the pressure at the pressure port is the same as that of the closed air bag and the pressure indicating air bag. When clinical medical personnel inject gas at the inflatable joint, as the injected gas increases, the pressure indicates the airbag pressure, and the pressure at the closed airbag and the pressure interface also increases. Once the closed airbag and the external pressure indicate that the airbag pressure is too high and exceeds the pressure safety valve Safety value, the pressure safety valve is opened to release the air leakage, when the pressure drops to the safety pressure, the pressure safety valve is closed, and the pressure in the pipeline is finally automatically maintained below the safety value, which can ensure that the maximum pressure of the closed air bag and the pressure indication air bag will not exceeds the safe value.

Description of drawings

Fig. 1 is a structural representation of the utility model;

Fig. 2 is a structural schematic diagram of a pressure safety valve;

Parts, parts and numbers in the figure: catheter 1, main joint 2, closed air bag 3, inflation tube 4, valve body 5, fixed core 6, sealing ring 7, spring 8, shielding cover 9, pressure control branch pipe 10, pressure safety Valve 11, inflation joint 12, pressure indicating air bag 13.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described.

As shown in Figure 1, the artificial airway of the present utility model comprises a catheter 1, a main connector 2, a closed air bag 3 and an inflatable tube 4, the closed air bag 3 is arranged on the catheter 1, and the inside of the closed air bag 3 and the inside of the catheter 1 Partitioned, the main joint 2 is arranged at the end of the catheter; one end of the inflation tube 4 communicates with the closed air bag 3, and the other end communicates with the pressure indicating air bag 13, and an inflation joint 12 is arranged at the end of the inflation tube. That is: a pressure safety valve 11 is also included, and a pressure port is provided on the pressure safety valve 11 , and the pressure port of the pressure safety valve 11 is communicated with the inflation pipe 4 . Because the pressure port of the pressure safety valve communicates with the closed air bag 3 and the pressure indicating air bag 13 through the inflatable tube 4, the pressure at the pressure port is the same as that of the closed air bag 3 and the pressure indicating air bag 13. When the clinical medical personnel inject gas at the inflatable joint 12, along with the increase of the injected gas, the pressure indicating the pressure of the airbag 13 will increase, and the pressure at the closed airbag 3 and the pressure interface will also increase. When the pressure exceeds the safety value of the pressure safety valve, the pressure safety valve opens to release the pressure, and when the pressure drops to a safe pressure, the pressure safety valve closes, and the pressure in the pipeline is finally automatically maintained below the safety value, which can ensure the sealing of the airbag 3 and the pressure indicating airbag 13 The maximum pressure value will not exceed the safe value. Since the pressure safety valve arranged on the artificial airway can automatically maintain the pressure of the closed airbag 3, the medical personnel do not need to frequently check the pressure of the closed airbag 3 manually, which saves a lot of repetitive work. The artificial airway in the prior art requires medical personnel to detect the pressure of the closed air bag 3 . When using the artificial airway claimed in this application to control the pressure of the closed airbag 3, it does not rely on the senses of relevant medical staff to judge, and is not affected by fluctuations in the professional level of different medical staff, nor is it due to differences in the personal judgment of medical staff. And cause the situation that closed airbag 3 pressure is too small or too large. Moreover, the utility model only needs to install a pressure safety valve on the artificial airway such as the existing tracheal intubation tube and tracheotomy catheter 1, and does not need to make a lot of changes to the original pipeline, so that the medical staff does not need to be equipped with a special pressure gauge And specific operating procedures, safely inflate the air bag at the inflation joint 12 to increase the pressure of the air bag so that it can seal the airway well without worrying about its pressure being too high, simplify daily airway management, and at the same time Ensure patient safety. Therefore, the utility model not only has a simple structure, but also can greatly reduce the workload of medical personnel, improve the accuracy of the pressure control of the closed airbag 3, and can effectively prevent artificial airway-associated pneumonia during the treatment process, and can reduce or even avoid airway pressure. Serious complications such as mucosal ischemic injury and tracheoesophageal fistula can be reduced, thereby reducing patient mortality, improving prognosis, and saving medical resources. The safety pressure of the pressure safety valve needs to be set during specific implementation, and the user can choose a pressure safety valve with a safety value of 25 cmH2O or 30 cmH2O according to actual needs. The utility model is applicable to artificial airways such as tracheal intubation tubes and tracheotomy catheters.

The pressure safety valve is composed of a valve body 5, a fixed core 6, an airtight ring 7 and a spring 8, the fixed core 6 is installed at one end of the valve body 5, and the pressure interface is arranged at the other end of the valve body 5; An air outlet window is provided, and one end of the spring 8 is connected to the fixed core 6 , and the other end is connected to the sealing ring 7 , and the sealing ring 7 is arranged at the pressure port of the valve body 5 . When the pressure at the pressure port exceeds the set safety value, the airtight ring 7 compresses the spring 8 under the action of the gas pressure to open the pressure control port, and the gas is discharged from the pipeline until the pressure of the closed air bag 3 is lower than the safety value. 7 The pressure control port is closed under the action of the spring 8. The discharged gas flows out of the valve body 5 from the gas outlet window of the fixed core 6 . During specific implementation, the stiffness and length of the spring 8 are selected according to the set safety value.

In order to facilitate the installation of a pressure safety valve and discharge gas when the pressure is too high, the pressure safety valve communicates with the inflation pipe 4 through a pressure control branch pipe 10, one end of the pressure control branch pipe 10 is connected to the inflation pipe 4, and the other end enters the valve through a pressure port Inside the body 5, and the sealing ring 7 is located at the port of the pressure control branch pipe 10. The pressure control branch pipe 10 makes the pressure safety valve with exhaust and pressure reduction function a certain distance from the inflation interface, which can facilitate the operator to inflate the closed air bag 3 at the inflation joint 12, and can also avoid being disturbed when exhausting.

In order to seal the valve body 5 and prevent a large amount of dust from entering the valve body 5, a shielding cover 9 is provided at the air outlet window. During specific implementation, one end of the shielding cover 9 can be rotatably connected with the valve body 5 directly above the air outlet window, and the other end is a free end. But when the pressure safety valve is opened to exhaust, the cover 9 is automatically opened under the action of the air flow, so that the gas can be discharged from the inside of the valve body 5; but when the pressure safety valve is closed, the cover 9 is built on the valve body 5 under the action of gravity Cover the air outlet window to prevent a large amount of dust from entering the inside of the valve body 5, and reduce the probability of dust entering the artificial airway through the pressure safety valve.

The pressure safety valve is a pilot pressure safety valve. Since the pressure safety valve with spring 8 structure will change the pressure of spring 8 on the sealing ring 7 due to the change of the length of spring 8 during the opening process, so the pressure control of the closed air bag 3 is not accurate enough, and the pilot pressure safety valve is adopted. The valve port is less affected by the change of the length of the spring 8 during the opening process, and the pressure control of the pipeline system is more precise and safe.

Claims (5)

1. Artificial airway, including catheter (1), main connector (2), closed air bag (3) and inflatable tube (4), the closed air bag (3) is set on the catheter (1), and the closed air bag (3) ) is separated from the interior of the catheter (1), the main connector (2) is set at the end of the catheter (1); one end of the inflation tube (4) communicates with the closed air bag (3), and the other end communicates with the pressure indicating air bag ( 13) connected, and an inflatable joint (12) is provided at the end of the inflatable pipe (1), which is characterized in that it also includes a pressure safety valve (11), and a pressure port is provided on the pressure safety valve (11), and the pressure The pressure port of the safety valve (11) communicates with the inflation pipe (4). 2. The artificial airway according to claim 1, characterized in that: the pressure safety valve (11) is composed of a valve body (5), a fixed core (6), an airtight ring (7) and a spring (8), The fixed core (6) is installed at one end of the valve body (5), and the pressure port is set at the other end of the valve body (5); the fixed core (6) is provided with an air outlet window, and one end of the spring (8) is connected to the The fixed core (6) is connected, and the other end is connected with the sealing ring (7), and the sealing ring (7) is arranged at the pressure port of the valve body (5). 3. The artificial airway according to claim 2, characterized in that: the pressure safety valve (11) communicates with the inflation pipe (4) through the pressure control branch pipe (10), and one end of the pressure control branch pipe (10) is connected to the inflation pipe The pipe (4) is connected, and the other end enters the valve body (5) through the pressure port, and the sealing ring (7) is located at the port of the pressure control branch pipe (10). 4. The artificial airway according to claim 2, characterized in that: a cover (9) is provided at the outlet window. 5. The artificial airway according to claim 1, characterized in that: the pressure safety valve (11) is a pilot-operated pressure safety valve (11).