Air leakage prevention type trachea cannula

Abstract

The utility model belongs to the field of trachea cannulas, and discloses an air leakage prevention type trachea cannula which comprises a catheter. An air bag fixedly sleeves the peripheral wall of the outer side, far away from the end of the outer joint, of the catheter; one end of the air injection pipe is located on the inner side of the catheter and is communicated with the air bag, and the other end of the air injection pipe penetrates through the peripheral wall of the catheter and extends to the outer side of the catheter; a connecting cylinder is fixed to the end, away from the air bag, of the air injection pipe, the two ends of the connecting cylinder are open, the connecting cylinder is in through connection with the air injection pipe, an air valve is arranged in the connecting cylinder, and the connecting cylinder is sleeved with a detachably-connected cap used for sealing and blocking the connecting cylinder. Through double sealing of the air valve and the cap, the end, away from the air bag, of the air injection pipe is effectively sealed and blocked, the possibility of air leakage in the air bag is reduced, and in the follow-up intubation treatment process, medical staff do not need to monitor the air bag pressure and intermittently inject air to maintain the air bag pressure.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of tracheal intubation, concretely relates to a leakage-proof tracheal intubation. BACKGROUND

[0002] Endotracheal intubation is one of the main means in clinical critical patients and anesthesia management. Application of tracheal intubation can improve patient ventilation and ensure airway patency, so tracheal intubation is not only applied to anesthesia implementation, but also plays an important role in the rescue and recovery of critical patients' respiratory circulation and treatment.

[0003] For example, the Chinese patent with application number CN201720086425.8 discloses a leakage-proof single-lumen single-capsule reinforced tracheal intubation tube, which is provided with a red thickened reflective convex eye-catching scale at a distance of 18-26 cm from the insertion port on the tube body, and is also provided with a tube wall reinforced anti-biting device at a distance of 18-26 cm from the insertion port on the outer wall of the tube body. The inflation tube of the air bag is arranged at the connection of the tube body and is fixed in a reinforced manner. A anti-falling clamping groove is arranged between the catheter tube body and the external interface. Compared with the currently used intubation tube, the leakage-proof single-lumen single-capsule tracheal intubation tube has the advantages of simple structure, local reinforcement, prevention of air leakage, convenient operation and recording, time and labor saving, safety and reliability, and long-term indwelling.

[0004] However, in the clinical intubation process, leakage of the air bag inflation tube causing the air bag to contract is very common. After the air bag leaks and contracts, it is easy to cause the oropharyngeal part and gastric contents to enter the airway, causing aspiration pneumonia, increasing the length of hospital stay and hospitalization costs, greatly increasing the economic burden of patients, and also aggravating the patient's condition, affecting the prognosis, and even causing critical patients to die of aspiration pneumonia. Therefore, in the prior art, medical personnel need to monitor the air bag pressure and intermittently inject air to maintain the air bag pressure. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of the prior art, the purpose of the utility model is to provide a leakage-proof tracheal intubation tube, which solves the problem that medical personnel need to monitor the air bag pressure and intermittently inject air to maintain the air bag pressure in the prior art.

[0006] The purpose of the utility model can be achieved by the following technical solutions:

[0007] The leakage-proof tracheal intubation tube comprises a catheter.

[0008] One end of the catheter is fixed with an external connector, and a gas bag is fixedly sleeved on the outer side wall of the end of the catheter away from the external connector.

[0009] The gas injection tube is fixedly connected to the catheter, one end of the gas injection tube is located inside the catheter and is in through connection with the air bag, and the other end of the gas injection tube extends to the outside of the catheter through the peripheral wall of the catheter;

[0010] The end of the gas injection tube away from the air bag is fixedly provided with a connecting barrel, both ends of the connecting barrel are in an open state, the connecting barrel is in through connection with the gas injection tube, a gas valve is arranged in the connecting barrel, and a detachable cap is sleeved on the connecting barrel, the cap is used for sealing and plugging the connecting barrel.

[0011] The above technical scheme has the following principles and effects:

[0012] In use, the end of the catheter away from the external connector is inserted into the airway of a patient, then the cap is opened, a gas filling device such as a syringe in the prior art is connected to the connecting barrel, the gas valve is opened, and air is injected into the connecting barrel, the air enters the air bag through the gas injection tube, the air bag is inflated and tightly adheres to the peripheral wall of the inner cavity of the airway of the patient, when the air bag is filled with air, the gas valve is closed first, and then the cap is sleeved on the connecting barrel, the air injection tube end away from the air bag is effectively sealed and plugged through the double sealing of the gas valve and the cap, the possibility of air leakage in the air bag is reduced, and in the subsequent intubation treatment process, medical staff do not need to monitor the air bag pressure and intermittently inject air to maintain the pressure of the air bag.

[0013] The gas injection tube and the connecting barrel are fixedly provided with an indicating capsule, one end of the indicating capsule is connected to the gas injection tube, and the other end of the gas injection tube is in through connection with the connecting barrel;

[0014] The peripheral wall of the connecting barrel is provided with helically distributed thread teeth, and the inner peripheral wall of the cap is provided with a matching thread groove, so that the connecting barrel and the cap are in threaded connection;

[0015] A disc gasket is fixed to the inner top surface of the cap, and when the cap is connected to the connecting barrel, the disc gasket is pressed against the end of the connecting barrel away from the gas injection tube;

[0016] The disc gasket is made of silica gel material;

[0017] A string is fixed to the cap, and the other end of the string is fixed to the indicating capsule;

[0018] The peripheral wall of the catheter is provided with a scale line.

[0019] The nouns, conjunctions or adjectives involved in the above technical scheme are explained as follows:

[0020] Fixed connection: refers to the process of connecting two separated profiles or parts into a complex part or component by using fasteners such as screws, bolts and rivets.

[0021] Threaded connection: refers to the connection and fixation between objects through the mutual engagement of threads.

[0022] The beneficial effects of the utility model are:

[0023] 1. Insert the catheter into the patient's airway away from the external connector end, then open the cap and simultaneously open the air valve to inject gas into the connecting tube. The gas enters the cuff through the inflation tube, causing the cuff to inflate and fit tightly against the inner wall of the patient's airway. After the cuff is fully inflated, first close the air valve, and then put the cap back on the connecting tube. Through the double seal of the air valve and the cap, the end of the inflation tube away from the cuff is effectively sealed, reducing the possibility of gas leakage from the cuff. During subsequent intubation treatment, medical personnel do not need to monitor the cuff pressure and intermittently inject air to maintain the cuff pressure.

[0024] 2. The thread teeth and thread grooves are matched to achieve a detachable connection between the connecting cylinder and the cap. The use of a silicone disc gasket further improves the sealing effect on the end of the connecting cylinder away from the air injection pipe.

[0025] 3. Connect the indicator pouch to the cap with a thin string to prevent the cap from being lost after it is unscrewed. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Fig. 1 This is a schematic diagram of the overall structure of this utility model;

[0028] Fig. 2 This is a schematic cross-sectional view of the catheter structure of this utility model;

[0029] Fig. 3 This is a schematic diagram of the cap portion of this utility model. Detailed Implementation

[0030] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0031] This combination Figs. 1-3This describes an embodiment of a leak-proof endotracheal tube. Specifically, the leak-proof endotracheal tube is constructed as a split structure, comprising components such as a catheter 100, a cuff 200, an inflation tube 300, a connecting tube 400, an air valve 500, and a cap 600. In use, the end of the catheter 100 furthest from the external connector 101 is inserted into the patient's airway. Then, the cap 600 is opened, and the tube is connected to the connecting tube 400 using an inflation device such as a syringe (in the prior art). Simultaneously, the air valve 500 is opened to inject gas into the connecting tube 400. The gas enters the cuff through the inflation tube 300. 200, which inflates the cuff 200 and makes it fit tightly against the inner wall of the patient's airway. After the cuff 200 is inflated, first close the air valve 500, and then put the cap 600 on the connecting tube 400. Through the double seal of the air valve 500 and the cap 600, the end of the air injection tube 300 away from the cuff 200 is effectively sealed and blocked, reducing the possibility of gas leakage inside the cuff 200. During subsequent intubation treatment, medical personnel do not need to monitor the cuff pressure and intermittently inject air to maintain the pressure of the cuff 200.

[0032] Please refer to Figs. 1-3 A leak-proof endotracheal tube, comprising a catheter 100;

[0033] An external connector 101 is fixed to one end of the conduit 100, and an airbag 200 is fixedly sleeved on the outer peripheral wall of the end of the conduit 100 away from the external connector 101.

[0034] An air injection tube 300 is fixedly connected to the catheter 100. One end of the air injection tube 300 is located inside the catheter 100 and is connected to the air bag 200. The other end of the air injection tube 300 extends through the peripheral wall of the catheter 100 to the outside of the catheter 100.

[0035] A connecting tube 400 is fixed to one end of the air injection tube 300 away from the airbag 200. Both ends of the connecting tube 400 are open. The connecting tube 400 is connected to the air injection tube 300. An air valve 500 is installed inside the connecting tube 400. A detachable cap 600 is fitted on the connecting tube 400. The cap 600 is used to seal and block the connecting tube 400.

[0036] The catheter 100 is preferably made of soft and durable medical-grade plastic or rubber to ensure comfort and safety. The outer peripheral wall of the catheter 100 is smooth and flat to reduce discomfort to the patient when inserted into the body.

[0037] The airbag 200 is preferably made of reliable medical-grade silicone or polyethylene material, which gives the airbag 200 good elasticity and durability.

[0038] In this application, the air valve 500 can be either automatic or manual. The air valve 500 can control the flow of gas in two directions and can be used to regulate the air pressure inside the airbag 200 and to discharge gas.

[0039] The air inlet tube 300 is usually made of medical-grade silicone or polyurethane material with good toughness and flexibility. It can be bent freely without being easily deformed or broken. The connection part of the air inlet tube 300 and the catheter 100 is close to the peripheral wall of the end of the catheter 100 connecting to the external connector 101.

[0040] In use, insert the end of the catheter 100 away from the external connector 101 into the patient's airway, then open the cap 600 and connect it to the connecting tube 400 using an inflation device such as a syringe. At the same time, open the air valve 500 to inject gas into the connecting tube 400. The gas enters the cuff 200 through the inflation tube 300, causing the cuff 200 to inflate and fit tightly against the inner wall of the patient's airway. After the cuff 200 is fully inflated, first close the air valve 500, and then put the cap 600 on the connecting tube 400. The double seal of the air valve 500 and the cap 600 effectively seals the end of the inflation tube 300 away from the cuff 200, reducing the possibility of gas leakage from the cuff 200. During subsequent intubation treatment, medical personnel do not need to monitor the cuff pressure or intermittently inject air to maintain the pressure of the cuff 200.

[0041] An indicator bladder 700 is fixed between the air injection pipe 300 and the connecting cylinder 400. One end of the indicator bladder 700 is connected to the air injection pipe 300 tank, and the other end of the air injection pipe 300 is connected to the connecting cylinder 400. By setting the indicator bladder 700, the volume change of the indicator bladder 700 can be observed, so as to indirectly reflect the internal pressure of the airbag 200.

[0042] The outer peripheral wall of the connecting cylinder 400 is provided with spirally distributed threaded teeth, and the inner peripheral wall of the cap 600 is provided with a matching threaded groove. The connecting cylinder 400 and the cap 600 are threadedly connected. The detachable connection between the connecting cylinder 400 and the cap 600 is achieved through the cooperation of the threaded teeth and the threaded groove.

[0043] A disc gasket 601 is fixed on the inner top surface of the cap 600. When the cap 600 is connected to the connecting cylinder 400, the disc gasket 601 presses against the end of the connecting cylinder 400 away from the air injection pipe 300. The disc gasket 601 further improves the sealing effect on the end of the connecting cylinder 400 away from the air injection pipe 300.

[0044] The disc gasket 601 is made of silicone material.

[0045] A thin string 602 is fixed to the cap 600, and the other end of the thin string 602 is fixed to the indicator sac 700; this prevents the cap 600 from being lost after being unscrewed.

[0046] The outer peripheral wall of catheter 100 is marked with graduation lines to facilitate the determination of insertion depth.

[0047] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0048] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims of this utility model.

Claims

1. An airtight endotracheal tube, comprising a catheter (100), characterized in that: An external connector (101) is fixed to one end of the conduit (100), and an airbag (200) is fixedly sleeved on the outer peripheral wall of the end of the conduit (100) away from the external connector (101). An air injection tube (300) is fixedly connected to the catheter (100). One end of the air injection tube (300) is located inside the catheter (100) and is connected to the air bag (200). The other end of the air injection tube (300) extends through the peripheral wall of the catheter (100) to the outside of the catheter (100). A connecting tube (400) is fixed to one end of the air injection tube (300) away from the airbag (200). Both ends of the connecting tube (400) are open. The connecting tube (400) is connected to the air injection tube (300) in a continuous manner. An air valve (500) is installed inside the connecting tube (400). A detachable cap (600) is fitted on the connecting tube (400). The cap (600) is used to seal and block the connecting tube (400).

2. The leak-proof endotracheal tube according to claim 1, characterized in that, An indicator bladder (700) is fixed between the air injection pipe (300) and the connecting cylinder (400). One end of the indicator bladder (700) is connected to the air injection pipe (300) tank, and the other end of the air injection pipe (300) is connected to the connecting cylinder (400).

3. The leak-proof endotracheal tube according to claim 2, characterized in that, The outer peripheral wall of the connecting cylinder (400) is provided with spirally distributed threaded teeth, and the inner peripheral wall of the cap (600) is provided with a matching threaded groove. The connecting cylinder (400) and the cap (600) are threadedly connected.

4. The leak-proof endotracheal tube according to claim 3, characterized in that, A disc gasket (601) is fixed on the inner top surface of the cap (600). When the cap (600) is connected to the connecting tube (400), the disc gasket (601) presses against the end of the connecting tube (400) away from the air injection pipe (300).

5. The leak-proof endotracheal tube according to claim 4, characterized in that, The disc gasket (601) is made of silicone material.

6. The leak-proof endotracheal tube according to claim 5, characterized in that, A thin rope (602) is fixed to the cap (600), and the other end of the thin rope (602) is fixed to the indicator bag (700).

7. The leak-proof endotracheal tube according to claim 6, characterized in that, The outer peripheral wall of the catheter (100) is provided with graduation lines.

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