Double-airbag multifunctional trachea cannula capable of continuously measuring pressure

Abstract

The utility model discloses a continuous pressure measuring double-air-bag multifunctional trachea cannula which comprises a catheter, an inner air bag is sleeved on the surface of the catheter in a sealing mode, an outer air bag is sleeved on the surface of the catheter in a sealing mode, the inner air bag is located in an inner cavity of the outer air bag, and an inflation tube is inserted in the catheter wall on one side of the catheter between the inner air bag and the outer air bag in a sealing mode. The other end of the inflation tube penetrates through the surface of the catheter and is communicated with an air pressure adjusting assembly, a liquid suction tube is inserted into the wall of the other side of the catheter in a sealed mode, a suction inlet of the liquid suction tube is located at the upper end of the outer air bag, and the discharge end of the liquid suction tube penetrates through the surface of the catheter and extends to the outside. The outer air bag is inflated through the inflation tube, the outer air bag is apple-shaped after being inflated, oral secretions are more easily accumulated above the air bag, the liquid suction tube sucks the secretions out, and pneumonia caused by the fact that the secretions flow to the lower respiratory tract is reduced.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a continuous pressure monitoring dual-bag multifunctional endotracheal tube. Background Technology

[0002] Endotracheal intubation is a technique that involves inserting a specially designed endotracheal tube through the glottis into the trachea. This technique provides optimal conditions for airway patency, ventilation and oxygen supply, and respiratory suction.

[0003] Endotracheal intubation is a special tube used to establish artificial ventilation. This tube is inserted through the mouth or nose, passing through the pharynx and larynx to reach the trachea. During use, the endotracheal tube closes the airway with an air cuff to reduce the risk of oral secretions entering the lower respiratory tract. However, oral secretions blocked by the air cuff cannot be cleared. When the patient changes position or coughs up phlegm, gaps may form between the air cuff and the tracheal wall, causing secretions to enter the lower respiratory tract and increasing the risk of lung infection. Utility Model Content

[0004] The purpose of this invention is to provide a continuous pressure monitoring dual-bag multifunctional endotracheal intubation system to solve the problem mentioned in the background art where oral secretions are blocked by the cuff and cannot be cleared, and when the patient's position changes or coughing, a gap exists between the cuff and the tracheal wall, causing secretions to enter the lower respiratory tract and easily leading to lung infection.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A continuous pressure monitoring dual-bag multifunctional endotracheal cannula includes a catheter, an inner bag sealed to the surface of the catheter, an outer bag sealed to the surface of the catheter with the inner bag located within the cavity of the outer bag, an inflation tube sealed and inserted into one side wall of the catheter between the inner and outer bags, the other end of the inflation tube penetrating the surface of the catheter and connected to a pressure regulating component, a suction tube sealed and inserted into the other side wall of the catheter, the suction port of the suction tube being located at the upper end of the outer bag, the discharge end of the suction tube penetrating the surface of the catheter and extending to the outside, a connecting connector connected to the other end of the catheter, a guide wire fixedly connected to the inner wall surface of the catheter, and a hydrophilic layer coated on the surface of the catheter.

[0007] Preferably, the surface of the catheter is provided with a plurality of side holes, and the inner cavity of the side holes is connected to the inner cavity of the inner air bladder.

[0008] Preferably, the air pressure regulating component includes a bladder pressure monitoring gauge connected to one end of an inflation tube, an air inlet tube connected to the outlet end of the bladder pressure monitoring gauge, and an inflation / deflation device for controlling the inflation pressure of the external airbag connected to one end of the air inlet tube.

[0009] Preferably, the inflation / deflation component includes a housing connected to one end of an inflation tube. A sealing disc for sealing the air inlet end of the housing is slidably connected to the inner cavity of the housing. A spring is provided in the inner cavity of the housing. The two ends of the spring are respectively fixedly connected to the inner wall of one side of the housing and the surface of the sealing disc. A pressing post is fixedly connected to the surface of the sealing disc. One end of the pressing post extends to the inner cavity of the air inlet end of the housing. A balancing component for balancing the sealing disc is provided on the surface of the sealing disc.

[0010] Preferably, the balancing assembly includes guide grooves formed on the upper and lower inner wall surfaces of the housing, and guide blocks are slidably connected to the inner cavities of both sets of guide grooves, with the two sets of guide blocks respectively fixedly connected to the surface of the corresponding side sealing disc.

[0011] Preferably, one side of the connector is connected to an end-tidal carbon dioxide monitoring interface.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model, through the setting of an external air bladder and a suction tube, inflates the external air bladder through the inflation tube. After inflation, the external air bladder is apple-shaped, making it easier for oral secretions to accumulate above the external air bladder. The suction tube then draws out the secretions, reducing the risk of secretions flowing into the lower respiratory tract and causing pneumonia. Furthermore, it can be used after being moistened with physiological saline before use, without the need for other lubricants, making the insertion process smoother and easier for medical staff to use, further reducing the discomfort experienced by patients during insertion.

[0014] 2. This utility model, through the setting of side holes and air pressure adjustment components, inflates the outer cuff through the inflation tube and constantly observes the pointer of the cuff pressure monitoring gauge, enabling real-time monitoring of the outer cuff pressure. This reduces airway mucosal ischemia and damage caused by high outer cuff pressure and avoids air leakage between the endotracheal tube and the airway due to insufficient outer cuff pressure. Furthermore, when the airway pressure is high, the airway pressure is transmitted to the inner cuff, which is compressed, and the air pressure in the outer cuff also changes accordingly. The pressure between the outer cuff and the tracheal mucosa can be adjusted according to the patient's airway pressure and the ventilator's delivery pressure, thereby improving the quality of airway management.

[0015] 3. This utility model, through the setting of an end-tidal carbon dioxide monitoring interface, connects to an end-tidal carbon dioxide monitoring device for monitoring end-tidal carbon dioxide, which can promptly detect carbon dioxide retention, find the cause, and ensure the safety of airway ventilation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a continuous pressure monitoring dual-bag multifunctional endotracheal cannula according to the present invention;

[0017] Figure 2This is a cross-sectional view of the catheter of this utility model;

[0018] Figure 3 This is a cross-sectional structural diagram of the shell of this utility model.

[0019] In the diagram: 100, catheter; 101, end-tidal carbon dioxide monitoring interface; 102, external cuff; 103, inflation tube; 104, suction tube; 105, cuff pressure monitor; 106, air inlet tube; 107, guidewire; 108, hydrophilic layer; 109, connector; 110, internal cuff; 111, side hole; 200, shell; 201, guide groove; 202, spring; 203, sealing plate; 204, pressing column; 205, guide block. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-3 This embodiment provides a continuous pressure monitoring dual-bag multifunctional endotracheal cannula, including a catheter 100. An inner bag 110 is sealed to the surface of the catheter 100, and an outer bag 102 is also sealed to the surface of the catheter 100, with the inner bag 110 located within the inner cavity of the outer bag 102. An inflation tube 103 is sealed and inserted into one side of the catheter 100 wall between the inner bag 110 and the outer bag 102. The other end of the inflation tube 103 penetrates the surface of the catheter 100 and is connected to a pressure regulating component. A suction tube 104 is sealed and inserted into the other side of the catheter 100 wall. The suction port of the suction tube 104 is located at the upper end of the outer bag 102, and the discharge end of the suction tube 104 penetrates the surface of the catheter 100 and extends to the outside. The other end of the catheter 100 is connected to a connecting connector 10. 9. A guidewire 107 is fixedly connected to the inner wall surface of the catheter 100. The surface of the catheter 100 is coated with a hydrophilic layer 108, wherein the hydrophilic layer 108 is one or more of polyvinylpyrrolidone, hyaluronic acid, polyethylene glycol, chitosan, etc. Through the setting of the external balloon 102 and the suction tube 104, air is inflated into the external balloon 102 through the inflation tube 103. After inflation, the external balloon 102 is apple-shaped, and oral secretions are more likely to accumulate above the balloon. The suction tube 104 aspirates the secretions, reducing the secretions from flowing into the lower respiratory tract and causing pneumonia. In addition, it can be used after being moistened with physiological saline before use, without the need for other lubricants, making the catheter insertion process smoother and easier for medical staff to use, further reducing the patient's discomfort during catheter insertion.

[0022] Furthermore, the surface of the catheter 100 is provided with several sets of side holes 111, the inner cavity of which is connected to the inner cavity of the inner airbag 110. The air pressure regulating component includes a balloon pressure monitoring gauge 105 connected to one end of the inflation tube 103. The outlet end of the balloon pressure monitoring gauge 105 is connected to an inlet tube 106. One end of the inlet tube 106 is connected to an inflation / deflation device for controlling the inflation pressure of the outer airbag 102. Through the side holes 111 and the air pressure regulating component, air is inflated into the outer airbag 102 through the inflation tube 103, and the balloon pressure is constantly monitored. The pointer on gauge 105 can monitor the pressure of the external cuff 102 in real time, reducing airway mucosal ischemia and damage caused by high pressure in the external cuff 102. It can also prevent air leakage between the endotracheal tube and the airway due to insufficient pressure in the external cuff 102. When the airway pressure is high, the airway pressure is transmitted to the internal cuff 110. The internal cuff 110 is compressed, and the air pressure in the external cuff 102 also changes accordingly. The pressure between the external cuff 102 and the tracheal mucosa can be adjusted according to the patient's airway pressure and the ventilator delivery pressure, thereby improving the quality of airway management.

[0023] Furthermore, the inflation / deflation device includes a housing 200 connected to one end of the inflation tube 103. A sealing disc 203 for sealing the air inlet of the housing 200 is slidably connected to the inner cavity of the housing 200. A spring 202 is provided inside the housing 200, with both ends of the spring 202 fixedly connected to one side of the inner wall of the housing 200 and the surface of the sealing disc 203, respectively. A pressing post 204 is fixedly connected to the surface of the sealing disc 203, with one end of the pressing post 204 extending to the air inlet of the housing 200. The inner cavity of the air end, the surface of the sealing disc 203 is provided with a balancing component for balancing the sealing disc 203. Through the setting of the air inflation and deflation components, when the outer air bag 102 is inflated, the pressure of the external air source is greater than the elastic force of the spring 202, the sealing disc 203 is pushed open, and the gas can enter the outer air bag 102. When the gas attempts to flow in reverse, the elastic force of the spring 202 pushes the sealing disc 203 back to seal the housing 200, close the air inlet of the housing 200, and prevent the gas from flowing back.

[0024] Preferably, the balancing component includes guide grooves 201 formed on the upper and lower inner wall surfaces of the housing 200. Guide blocks 205 are slidably connected to the inner cavities of both sets of guide grooves 201. The two sets of guide blocks 205 are respectively fixedly connected to the surface of the corresponding side sealing disc 203. By setting the balancing component, when the sealing disc 203 moves, it is ensured that the upper and lower sides of the sealing disc 203 move at the same speed, avoiding uneven movement speed on both sides causing the sealing disc 203 to get stuck in the inner cavity of the housing 200.

[0025] It is worth noting that one side of the connector 109 is connected to an end-tidal carbon dioxide monitoring interface 101. Through the setting of the end-tidal carbon dioxide monitoring interface 101, the end-tidal carbon dioxide monitoring interface 101 is connected to an end-tidal carbon dioxide monitoring device for monitoring end-tidal carbon dioxide. This can detect carbon dioxide retention in a timely manner, find the cause, and ensure the safety of airway ventilation.

[0026] Working principle;

[0027] First, the device is connected to the ventilator via connector 109, and the end-tidal carbon dioxide monitoring device is connected to the end-tidal carbon dioxide monitoring interface 101. At this time, the air inlet of the housing 200 is connected to the medical air pump, and air is inflated into the external cuff 102 through the inflation tube 103. The pointer of the cuff pressure monitoring gauge 105 is constantly observed. The pointer rotation indicates the pressure, which can display the pressure of the external cuff 102 in real time. This reduces the risk of airway mucosal ischemia and damage caused by high pressure in the external cuff 102, and also avoids air leakage between the endotracheal tube and the airway due to insufficient pressure in the external cuff 102. After the external cuff 102 is inflated... The outer cuff 102 is apple-shaped, making it easier for oral secretions to accumulate above it. The secretions are then suctioned out through the suction tube 104, reducing the risk of secretions flowing into the lower respiratory tract and causing pneumonia. When the airway pressure is high, the airway pressure is transmitted to the inner cuff 110, which is compressed. The air pressure inside the outer cuff 102 also changes accordingly. The pressure between the outer cuff 102 and the tracheal mucosa can be adjusted according to the patient's airway pressure and the ventilator's delivery pressure, improving the quality of airway management. Subsequently, by observing the end-tidal carbon dioxide monitoring device, carbon dioxide retention can be detected in a timely manner, the cause can be found, and the safety of airway ventilation can be ensured.

[0028] 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 to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A continuous pressure monitoring dual-bag multifunctional endotracheal cannula, characterized in that, The device includes a conduit (100), on which an inner airbag (110) is sealed. An outer airbag (102) is also sealed on the surface of the conduit (100), with the inner airbag (110) located within the inner cavity of the outer airbag (102). An inflation tube (103) is sealed and inserted into one side wall of the conduit (100) between the inner airbag (110) and the outer airbag (102). The other end of the inflation tube (103) penetrates the surface of the conduit (100) and is connected to a pressure regulator. The component includes a suction tube (104) sealed and inserted into the other side wall of the conduit (100). The suction port of the suction tube (104) is located at the upper end of the external airbag (102). The discharge end of the suction tube (104) penetrates the surface of the conduit (100) and extends to the outside. The other end of the conduit (100) is connected to a connector (109). A guide wire (107) is fixedly connected to the inner wall surface of the conduit (100). The surface of the conduit (100) is coated with a hydrophilic layer (108). The surface of the conduit (100) is provided with a number of side holes (111), the inner cavity of the side holes (111) is connected to the inner cavity of the inner airbag (110); the air pressure regulating component includes a bladder pressure monitoring gauge (105) connected to one end of the inflation tube (103), the air outlet of the bladder pressure monitoring gauge (105) is connected to an air inlet tube (106), and one end of the air inlet tube (106) is connected to an inflation / deflation device for controlling the inflation pressure of the outer airbag (102); The inflation / deflation device includes a housing (200) connected to one end of an inflation tube (103). A sealing disc (203) for sealing the air inlet end of the housing (200) is slidably connected to the inner cavity of the housing (200). A spring (202) is provided in the inner cavity of the housing (200). The two ends of the spring (202) are respectively fixedly connected to the inner wall of one side of the housing (200) and the surface of the sealing disc (203). A pressing column (204) is fixedly connected to the surface of the sealing disc (203). One end of the pressing column (204) extends into the inner cavity of the air inlet end of the housing (200). The surface of the sealing disc (203) is provided with a balancing component for balancing the sealing disc (203). The balancing component includes guide grooves (201) opened on the upper and lower inner wall surfaces of the housing (200). The inner cavities of the two sets of guide grooves (201) are slidably connected with guide blocks (205). The two sets of guide blocks (205) are respectively fixedly connected to the surface of the corresponding side sealing disc (203).

2. The continuous pressure monitoring dual-bag multifunctional endotracheal cannula according to claim 1, characterized in that: One side of the connector (109) is connected to an end-tidal carbon dioxide monitoring interface (101).

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