Washable anti-blocking subglottic suction artificial airway

Abstract

The utility model relates to a flushable anti-blocking subglottic suction artificial airway which comprises an artificial airway body, an air bag and a drainage tube. The air bag surrounds the artificial airway and is fixed on the artificial airway; one end, provided with the air bag section, of the drainage tube is fixedly mounted on the outer side wall or the inner side wall of the air bag section or is integrally buried in the tube wall of the air bag section; a plurality of drainage tube small holes are formed in the drainage tube, the opening areas of the drainage tube small holes are equal, and the number of the drainage tube small holes is gradually increased; or the number of the drainage tube small holes is not changed, the opening area is gradually increased, and the contact part of the air bag and the drainage tube is tightly attached to the part, provided with the drainage tube small holes, of the drainage tube. According to the anti-blocking drainage tube, fluid can continuously flow in the drainage tube, the anti-blocking effect is achieved, and secretions can be more effectively removed through continuous fluid movement. The drainage hole of the drainage tube has stable low negative pressure, and airway injury is avoided. Complications such as airway mucous membrane damage and bleeding possibly caused by too high suction negative pressure are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of artificial airway with subglottic suction, more specifically, it is a kind of subglottic suction artificial airway facilitating irrigation and drainage, which can continuously suck sputum and bacteria accumulated under glottis, eliminate "dead space", and reduce the risk of local infection and secondary ventilator-associated pneumonia. It also has the characteristics of anti-clogging and low negative pressure suction, reducing airway mucosa damage and bleeding complications. BACKGROUND

[0002] Subglottic suction artificial airway at window body bottom generally refers to a new type of tracheal tube or tracheostomy cannula, which is characterized by being equipped with a suction tube located below the glottis. This design aims to prevent ventilator-associated pneumonia (VAP).

[0003] For patients using artificial airway, a relatively closed "dead space" is formed between the subglottis and the airbag due to the presence of the airbag. This leads to the accumulation of sputum and secretions, which become a breeding ground for bacteria. These bacteria often enter the lower respiratory tract and lungs through the peripheral gap of the airbag, greatly increasing the risk of lung infection and being one of the key factors leading to VAP. To address this issue, regular or continuous suction of these secretions through the subglottic suction tube to prevent them from entering the lower respiratory tract and lungs has become one of the main methods for preventing and treating VAP.

[0004] However, the secretions under the glottis are often thick and sometimes contain solid impurities. This makes the subglottic suction tube on the market prone to clogging, leading to poor drainage, excessive suction pressure, and airway damage, thus the safety and efficacy need to be further optimized. UTILITY MODEL CONTENT

[0005] To address the above problems, the main purpose of the utility model is to provide a washable anti-clogging subglottic suction artificial airway that reduces the risk of infection, has stable low negative pressure, avoids airway damage, and facilitates drainage and irrigation.

[0006] The utility model solves the above technical problems by the following technical solutions: a washable anti-clogging subglottic suction artificial airway, which comprises: an artificial airway, an airbag, a drainage tube, a fixing head, and an airbag inflation tube. The artificial airway is a curved pipe, one end of which is a positioning section provided with a fixing head, and the other end is an airbag section for fixing the airbag. The drainage tube is drawn out from the positioning section at one end and set on the airbag section close to the airbag at the other end, and the end of the drainage tube provided with the airbag section is integrally formed and embedded in the pipe wall of the airbag section.

[0007] The airbag surrounds the artificial airway and is fixed on the artificial airway, the airbag section is a section entering the glottis of the human body, the fixing head of the positioning section is located outside the oral cavity, the part of the positioning section except the fixing head is located outside the oral cavity or the skin of the throat of the patient, and the airbag adopts an injection inflation mode to supplement or remove gas.

[0008] The airbag inflation pipe comprises an airbag inflation pipe front section and an airbag inflation pipe rear section, the airbag inflation pipe front section and the airbag inflation pipe rear section are communicated, the airbag inflation pipe front section for supplementing gas is fixed on the fixing head, the airbag inflation pipe rear section is located on the inner wall of the artificial airway, the airbag inflation pipe front section is a gas injection inflation end, and the airbag inflation pipe rear section is communicated with the airbag through the air hole arranged on the artificial airway.

[0009] The drainage tube is a drainage tube for periodically or continuously sucking secretions under the glottis, a plurality of drainage tube small holes are arranged on the drainage tube, from the one end of external drainage, the opening areas of the plurality of drainage tube small holes are equal, and the number gradually increases, or the number of the plurality of drainage tube small holes is unchanged, and the opening areas gradually increase.

[0010] In the specific embodiment of the utility model, the airbag is spherical after being filled with gas, and the diameter ranges from 6 mm to 35 mm.

[0011] In the specific embodiment of the utility model, the diameter of the smallest hole in the drainage tube small hole ranges from 0.08 mm to 1.2 mm, and the diameter of the largest hole ranges from 3.0 mm to 5.0 mm.

[0012] In the specific embodiment of the utility model, the drainage tube comprises two sections, a first section located outside the fixing head and a second section located on the outer side wall or inside the inner side wall of the airbag section or integrally formed, and the first section and the second section of the drainage tube are communicated; the first section of the drainage tube comprises a plurality of groups, each group comprises a pipeline and a cap installed on the pipeline, and the plurality of pipelines are fixed together in a separated but communicated mode; and each group of pipelines is provided with a separate cap.

[0013] In the specific embodiment of the utility model, the airbag and the artificial airway are integrally formed or fixed together by using an industrial glue safe for the human body, and the drainage tube and the artificial airway are integrally formed or fixed together by using an industrial glue safe for the human body.

[0014] In the specific embodiment of the utility model, the diameter of the drainage tube ranges from 2 mm to 5 mm.

[0015] In the specific embodiment of the utility model, the flushable anti-blocking glottis suction artificial airway is disposable or repeatedly used multiple times.

[0016] In the specific embodiment of the utility model, when the flushable anti-blocking glottis suction artificial airway is repeatedly used multiple times, the drainage tube is connected with an external flushing pipe.

[0017] In the embodiment of the utility model, the artificial airway and the drainage tube are made of antibacterial material, and the air bag is made of antibacterial material.

[0018] In the embodiment of the utility model, the end holes of the artificial airway and the drainage tube are smooth.

[0019] The utility model discloses the positive progress effect lies in: the utility model discloses a special pipeline and porous design, provide the washable anti -blocking glottis under suction artificial airway, has the following advantages:

[0020] 1. Under the driving of the exogenous negative pressure, the fluid can continuously flow in the drainage tube, and the negative pressure is prevented from being blocked.

[0021] 2. Easy to flush and drain: it is helpful to further keep the airway clean and further reduce the risk of infection.

[0022] 3. The special porous design of the drainage tube has stable low negative pressure around the drainage hole when negative pressure suction, avoids airway damage, avoids high suction negative pressure causing airway mucosa damage and even bleeding complications, has the effect of protecting airway mucosa, reducing damage and pain. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the front view of the overall structure schematic diagram of the utility model.

[0024] Figure 2 It is the top view of the overall structure schematic diagram of the utility model.

[0025] Figure 3 It is the structure schematic diagram of the drainage tube part in the utility model.

[0026] In the drawing: artificial airway pipe 1, air bag 2, drainage tube 3, drainage tube small hole 4, fixed head 5, air bag inflation pipe 6, air hole 7, positioning section 101, air bag section 102, first section 301, second section 302, air bag inflation pipe front section 601, air bag inflation pipe rear section 602. DETAILED DESCRIPTION

[0027] The utility model discloses a preferred embodiment, to be more detailed in the technical scheme of the utility model.

[0028] The utility model discloses a kind of anti-blocking glottis suction artificial airway with flushing function.In current clinical application, artificial airway cannula mainly includes oral (or nasal) tracheal intubation cannula and tracheostomy cannula.These cannulas are widely used in surgical anesthesia, long-term or short-term mechanical ventilation, respiratory failure and other situations needing to establish artificial airway.They are all provided with air bag, mainly to prevent tube dislocation and ensure the complete sealing of breathing machine.But due to the effect of air bag closing airway, a relative "dead space" is easily formed between glottis and air bag, and sputum and secretion in this area are easy to accumulate, creating an environment for bacteria and other microorganisms to multiply.These microorganisms often invade lower respiratory tract and lung along the gap of air bag, significantly increasing the risk of infection, and becoming one of the main causes of ventilator-associated pneumonia.Recently, there is a new type of artificial airway cannula design, which adds suction drainage tube on the upper edge of air bag, which can regularly or continuously suck secretion.However, due to the high viscosity and possible solid impurities of subglottic secretion, the current drainage tube is easy to be blocked, leading to poor drainage and airway damage, so its safety and effect need to be improved.The new design is to solve this problem, optimize fluid dynamics and ensure the continuous smoothness of subglottic suction tube, so as to more effectively prevent and treat ventilator-associated pneumonia.

[0029] Figure 1 It is the front view of the overall structure schematic diagram of the utility model. Figure 2 It is the top view of the overall structure schematic diagram of the utility model. Figure 1 As shown in the utility model, the anti-blocking glottis suction artificial airway can be flushed, which comprises: artificial airway 1, air bag 2, drainage tube 3, fixed head 5, air bag inflation pipe 6; the artificial airway 1 is a curved pipeline, one end of the curved pipeline is a positioning section 101 provided with the fixed head 5, the other end is an air bag section 102 for fixing the air bag 2, one end of the drainage tube 3 is led out from the positioning section 101, the other end is arranged on the air bag section 102 and close to the air bag 2, and one end of the drainage tube 3 arranged on the air bag section 102 is fixedly installed on the outer side wall, the inner side wall or integrally formed in the pipe wall of the air bag section 102, Figure 1 which is integrally formed in the pipe wall of the air bag section 102.

[0030] The air bag surrounds the artificial airway and is fixed on the artificial airway, the air bag section is the section entering the glottis of human body, the fixed head of the positioning section is located outside the oral cavity, the part of the positioning section except the fixed head is located in the oral cavity, and the air bag adopts injection inflation mode to supplement or remove gas.

[0031] The drainage tube 3 includes two sections, the first section 301 outside the fixed head 5, and the second section 302 (see Figure 1The first section 301 and the second section 302 of the drainage tube 3 are communicated.

[0032] In the specific implementation process, the first section 301 of the drainage tube 3 comprises a plurality of groups, each group comprising a pipe and a cap 302 mounted on the pipe, and the plurality of pipes are fixed together in a separated but communicated manner.

[0033] The drainage tube 3 comprises two sections, the first section 301 outside the fixing head 5 and the second section 302 on the outer side wall of the air bag section 102, the inner side wall or integrally formed, and the first section 301 and the second section 302 of the drainage tube 3 are communicated.

[0034] Each group of pipes is provided with a separate cap 303, so that the side holes can be opened and closed at any time. In this way, the suction pressure can be adjusted by the number of side holes opened and closed, especially when the external negative pressure has no function of adjusting the size.

[0035] The air bag inflation tube 6 comprises an air bag inflation tube front section 601 and an air bag inflation tube rear section 602, the air bag inflation tube front section 601 and the air bag inflation tube rear section 602 are communicated, the air bag inflation tube front section 601 for supplementing gas is fixed on the fixing head 5, the air bag inflation tube rear section 602 is located on the inner wall of the artificial airway 1, the air bag inflation tube front section 601 is a gas injection inflation end, and the air bag inflation tube rear section 602 is communicated with the air bag 2 through the air hole 7 arranged on the artificial airway 1.

[0036] The drainage tube 3 is a drainage tube for periodic or continuous suction of secretions in the glottis, and a plurality of drainage tube holes 4 are arranged on the drainage tube, from the one end of the external drainage, the opening areas of the plurality of drainage tube holes are equal, and the number gradually increases; or the number of the plurality of drainage tube holes is unchanged, and the opening areas gradually increase.

[0037] In the specific implementation process of the utility model, the position of the lowermost hole in the drainage tube hole 4 is close to the air bag 2, so that the effusion in the low place can be more effectively sucked.

[0038] Figure 3 The structure of the drainage tube part in the utility model is shown in the schematic view, Figure 3The drainage tube in the utility model can be set in the following way: starting from one end of external drainage, the opening areas of the plurality of drainage tube holes 4 are equal, and the number gradually increases; or the number of the plurality of drainage tube holes 4 is unchanged, and the opening areas gradually increase, the part where the air bag 2 and the drainage tube 3 are in contact is close to the part where the drainage tube hole 4 is opened on the drainage tube. In the specific application process, the design that can achieve the function of gradually releasing negative pressure can be used.

[0039] In the specific implementation process, the air bag is spherical after being filled with gas, and the diameter ranges from 6.0 to 40.0 mm; the diameter of the smallest hole in the drainage tube hole ranges from 0.08 to 1.0 mm, and the diameter of the largest hole ranges from 3.0 to 5.0 mm; the diameter of the drainage tube ranges from 2.0 to 5.0 mm; the above parameters can be set to other values as needed.

[0040] In the specific implementation process, the air bag 2 and the artificial airway 1 are integrally formed or fixed together by using an industrial glue that is safe for the human body; the drainage tube 3 and the artificial airway 1 are integrally formed or fixed together by using an industrial glue that is safe for the human body.

[0041] In the specific implementation process, the flushable anti-blocking subglottic suction artificial airway provided by the utility model is used once or repeatedly; when the flushable anti-blocking subglottic suction artificial airway is repeatedly used, the drainage tube 3 is connected to the external flushing tube.

[0042] In the specific implementation process, the artificial airway 1 and the drainage tube 3 in the utility model are pipelines made of antibacterial materials, and the air bag 2 is an air bag made of antibacterial materials.

[0043] The end holes of the artificial airway and the drainage tube in the utility model are all smooth, which prevents the human body from being scratched when in use.

[0044] The working process of the utility model is as follows: when the novel artificial airway with a subglottic suction function is used, the working process can be described as follows:

[0045] The artificial airway is placed: the medical team first accurately places the novel artificial airway in the airway of the patient, and the operation is completely the same as that of the conventional artificial airway.

[0046] The external negative pressure suction is connected: once the artificial airway is properly placed in the appropriate position, the subglottic suction drainage tube is immediately connected with the external suction device. According to the needs of the patient and the decision of the doctor, the device can be set to continuously or periodically generate negative pressure. In most cases, the negative pressure range of the external suction device is set to-10 to-100 mmHg.

[0047] Suction of secretions: When the external suction device is turned on, it will continuously or periodically suction secretions located below the glottis and above the balloon. This helps prevent secretions from entering the lower respiratory tract and lungs, thereby reducing the risk of ventilator-associated pneumonia. To achieve the best results, the artificial airway of the present application is recommended to be set to continuous suction, which is the most effective.

[0048] Periodic or aperiodic flushing: To further ensure the patency of the subglottic suction tube and maintain its cleanliness, medical personnel will periodically or aperiodically flush it with normal saline or the like. The usual operation is to inject 2-20 ml of normal saline through the suction tube, and at the same time or after waiting for a few seconds, the saline and secretions are sucked out together. This step helps to remove possible adherent secretions in and around the tube, ensuring the efficiency and continuity of subglottic suction.

[0049] The present application can allow fluid to flow continuously in the drainage tube, not only more effectively removing secretions, but also continuously maintaining the patency of the tube and preventing blockage. It is the most important advantage that distinguishes it from other artificial airways.

[0050] The present application is easy to flush and drain, which helps to keep the airway clean and further reduces the risk of infection.

[0051] The drainage hole of the drainage tube in the present application has a stable low negative pressure, avoiding airway damage. Excessive suction negative pressure can cause damage to the airway mucosa, and further cause complications such as bleeding. Reducing the suction negative pressure can protect the airway mucosa and reduce damage and pain.

[0052] The above shows and describes the basic principles and main features of the present application and the advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A flushable, anti-clogging subglottic suction artificial airway, characterized in that: The flushable, anti-clogging subglottic suction artificial airway includes: Artificial airway, airbag, drainage tube, fixation head, airbag inflation tube; the artificial airway is a curved tube, one end of which is a positioning section with a fixation head, and the other end is an airbag section for fixing the airbag. One end of the drainage tube is led out from the positioning section, and the other end is set on the airbag section and close to the airbag. The end of the drainage tube set on the airbag section is integrally formed and embedded in the tube wall of the airbag section. The airbag surrounds and is fixed to the artificial airway. The airbag section is the section that enters the human glottis. The fixing head of the positioning section is located outside the oral cavity. The part of the positioning section except for the fixing head is located outside the oral cavity or outside the patient's throat skin. The airbag is filled with gas or removed by injection. The airbag inflation tube includes a front section and a rear section, which are connected. The front section of the airbag inflation tube, which is used to replenish gas, is fixed to the fixed head, and the rear section of the airbag inflation tube is located on the inner wall of the artificial airway. The front section of the airbag inflation tube is the inflation end for injecting gas, and the rear section of the airbag inflation tube is connected to the airbag through an air hole set on the artificial airway. The drainage tube is a drainage tube for periodically or continuously aspirating subglottic secretions. The drainage tube has multiple drainage holes. Starting from the external drainage end, the opening area of ​​the multiple drainage holes is equal and the number gradually increases; or the number of multiple drainage holes remains unchanged, but the opening area gradually increases.

2. The flushable, anti-clogging subglottic suction artificial airway according to claim 1, characterized in that: When inflated, the airbag forms a spherical shape that surrounds the artificial airway, with a diameter ranging from 6 to 40 mm.

3. The flushable, anti-clogging subglottic suction artificial airway according to claim 1, characterized in that: The smallest diameter of the drainage tube orifice ranges from 0.08 to 1.2 mm, while the largest diameter ranges from 3.0 to 5.0 mm.

4. The flushable, anti-clogging subglottic suction artificial airway according to claim 1, characterized in that: The drainage tube consists of two sections: a first section located outside the fixed head, and a second section located on the outer side wall, inner side wall, or integrally formed on the airbag section. The first and second sections of the drainage tube are connected. The first section of the drainage tube consists of multiple sets, each set including a pipe and a cap installed on the pipe. The multiple sets of pipes are fixed together in a separate but connected manner. Each set of pipes is equipped with a separate cap.

5. The flushable, anti-clogging subglottic suction artificial airway according to claim 1, characterized in that: The airbag and artificial airway are integrally molded or fixed together using industrial adhesive that is safe for human use; the drainage tube and artificial airway are integrally molded or fixed together using industrial adhesive that is safe for human use.

6. The flushable, anti-clogging subglottic suction artificial airway according to claim 1, characterized in that: The diameter range of the drainage tube is 2-5mm.

7. The flushable, anti-clogging subglottic suction artificial airway according to claim 1, characterized in that: The flushable, anti-clogging subglottic suction artificial airway is for single use or can be reused multiple times.

8. The flushable, anti-clogging subglottic suction artificial airway according to claim 7, characterized in that: When the flushable, anti-clogging subglottic suction artificial airway is reusable multiple times, the drainage tube is connected to an external flushing tube.

9. The flushable, anti-clogging subglottic suction artificial airway according to any one of claims 1-8, characterized in that: The artificial airway and drainage tube are made of antibacterial materials, and the airbag is also made of antibacterial materials.

10. The flushable, anti-clogging subglottic suction artificial airway according to claim 7, characterized in that: The end holes of both the artificial airway and the drainage tube are rounded.

Images