Airway auxiliary opening tube for obese patient and use method of airway auxiliary opening tube

Abstract

The invention provides an auxiliary airway opening tube for obese patients, which relates to the field of medical tracheas and comprises a flexible outer-layer tube and a rigid inner-layer tube. The outer-layer tube is made of a medical-grade material with good biocompatibility and flexibility; the outer-layer tube can adapt to physiological bending of an airway; a supporting assembly used for opening an airway is fixed to the outer layer pipe. The supporting assembly is deformable; the supporting assembly can change the shape of the outer-layer pipe through deformation; the inner-layer pipe is detachably arranged in the outer-layer pipe; after the inner-layer pipe is inserted into the outer-layer pipe, the inner-layer pipe can provide stable support for the outer-layer pipe, and deformation of the outer-layer pipe is prevented. According to the auxiliary airway opening tube for the obese patient, the problem that in the prior art, an auxiliary airway opening tube is poor in effect on the obese patient is solved, the auxiliary airway opening tube can be better inserted into the airway of the obese patient, and it is better guaranteed that the airway is opened after the auxiliary airway opening tube is inserted into the airway.

Description

Technical Field

[0001] The present invention relates to the field of medical tracheas, and particularly to an airway auxiliary opening tube for obese patients. Background Art

[0002] The emergency department often receives various critically ill patients, such as cardiac arrest, severe trauma, poisoning, respiratory failure, etc. These patients may experience airway obstruction or ventilation disorders. Inserting a tube into the patient's nasal cavity can quickly and effectively open the airway and provide respiratory support for the patient, which is one of the key measures to save lives. Among these patients, some are obese. Due to their short and thick necks and more adipose tissue around the airway, the airway is relatively narrow and the tissue toughness is greater, making it difficult to insert a conventional tube.

[0003] In the prior art, such as a tracheal intubation guiding assembly for nasal cavity of obese patients disclosed in Chinese Patent Application No. 202021446630.9, although it takes into account the intubation problem of obese patients to a certain extent and takes a series of measures, such as setting an anti-blocking probe to avoid damage to the respiratory mucosa during intubation, using a liquid storage bottle, a liquid suction pipe and an air pump to remove nasal mucus to prevent blockage of the air outlet, and equipped with a fixed nasal plug to improve the use comfort, etc.

[0004] However, when facing the tough and narrow airway of obese patients, the intubation opening force of this guiding assembly is insufficient. The design of its own structure of the tracheal intubation does not fully consider how to effectively resist the high-pressure environment around the airway of obese patients, and it is difficult to ensure that the airway reaches an ideal open state after insertion, affecting the smooth entry of gas into the lungs. Summary of the Invention

[0005] In view of the above technical problems, the airway auxiliary opening tube for obese patients provided by the present invention can be better inserted into the airway of obese patients and ensure that the airway reaches an ideal open state.

[0006] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0007] The airway auxiliary opening tube for obese patients provided by the present invention includes a flexible outer tube and a rigid inner tube; the outer tube is made of a medical-grade material with good biocompatibility and flexibility; the outer tube can adapt to the physiological curvature of the airway; a support assembly for opening the airway is fixed on the outer tube; the support assembly is deformable; the support assembly can change the shape of the outer tube through deformation; the inner tube is detachably arranged inside the outer tube; after the inner tube is inserted into the outer tube, the inner tube can provide stable support for the outer tube to prevent the outer tube from deforming.

[0008] The airway auxiliary opening tube provided by the present invention for obese patients. Preferably, the support assembly includes a plurality of support bars made of memory material; the support bars are annular and coaxially sleeved on the outer wall of the outer layer tube; the support bars are evenly distributed along the axis of the outer layer tube.

[0009] The airway auxiliary opening tube provided by the present invention for obese patients. Preferably, the support bars are support bars made of nitinol alloy.

[0010] The airway auxiliary opening tube provided by the present invention for obese patients. Preferably, the support bars are air bags, the air bags are arranged around the outer periphery of the outer layer tube, an inflation channel communicating with the air bags is arranged on the outer layer tube, and an inflation interface is arranged at the outer end of the inflation channel; the inflation interface is at the outer end of the outer layer tube.

[0011] The airway auxiliary opening tube provided by the present invention for obese patients. Preferably, the outer layer tube is an outer layer tube made of hydrophilic polyurethane material.

[0012] The airway auxiliary opening tube provided by the present invention for obese patients. Preferably, the inner layer tube is an inner layer tube made of carbon fiber reinforced composite material.

[0013] The airway auxiliary opening tube provided by the present invention for obese patients. Preferably, the inner layer tube is a hollow tube body with a closed inner end; a plurality of side holes are opened on the side wall of the inner layer tube; the outer end of the inner layer tube is a drug administration interface.

[0014] The airway auxiliary opening tube provided by the present invention for obese patients. Preferably, a plurality of stripe-shaped protrusions are arranged on the outer wall of the outer layer tube; the protrusions are circumferentially distributed along the tube axis of the outer layer tube.

[0015] The airway auxiliary opening tube provided by the present invention for obese patients. Preferably, strip-shaped guide grooves are arranged on the inner wall of the outer layer tube; the guide grooves extend along the extension direction of the outer layer tube; guide blocks are arranged on the outer wall of the inner layer tube; the guide blocks can be slidably fixed in the guide grooves.

[0016] The airway auxiliary opening tube provided by the present invention for obese patients. Preferably, a receiving groove is further opened on the inner wall of the outer layer tube; the receiving groove communicates with the guide groove; the receiving groove is arranged on the side of the guide groove; the receiving groove matches the shape of the guide block; when the guide block is at the connection of the guide groove and the receiving groove, the inner layer tube rotates relative to the tube axis direction of the inner layer tube, which can drive the guide block to move into the receiving groove.

[0017] The airway auxiliary opening tube provided by the present invention for obese patients. Preferably, a handle is fixed at the outer end of the inner layer tube; Teflon coatings are arranged on the outer wall of the inner layer tube and the inner wall of the outer layer tube.

[0018] A method for using an airway auxiliary opening tube for obese patients, comprising the following steps: S101: disinfecting an inner tube and an outer tube, and inserting the inner tube into the outer tube to fix it; S102: performing surface anesthesia on the patient, inserting the inner end of the outer tube with the inner tube fixed inside from the patient's nasal cavity, and slowly inserting it according to the physiological curvature of the patient's airway until it reaches a predetermined position; S103: when the outer tube reaches the predetermined position, taking corresponding operations according to the type of support component to open it; if the support component is a nickel-titanium alloy support bar, waiting for the patient's own body temperature to transfer heat to the nickel-titanium alloy support bar to open it; if the support component is an airbag, slowly inflating the airbag through an inflation interface to expand the airbag and open the airway; S104: after confirming that the support component has been opened, introducing a drug from the outer end of the inner tube into the inner tube; S105: after the drug administration is completed, pulling the inner tube out of the outer tube.

[0019] The above technical solution has the following advantages or beneficial effects:

[0020] The present invention provides an airway auxiliary opening tube for obese patients, which relates to the field of medical airways, and includes a flexible outer tube and a rigid inner tube; the outer tube is made of medical-grade materials with good biocompatibility and flexibility; the outer tube can adapt to the physiological curvature of the airway; a support component for opening the airway is fixed on the outer tube; the support component is deformable; the support component can change the shape of the outer tube by deformation; the inner tube is detachably arranged inside the outer tube; after the inner tube is inserted into the outer tube, the inner tube can provide stable support for the outer tube to prevent the outer tube from deforming. The airway auxiliary opening tube for obese patients provided by the present invention solves the problem of poor effectiveness of airway auxiliary opening tubes in the prior art for obese patients, can be better inserted into the airway of obese patients, and better ensures airway opening after insertion. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention and its features, configurations and advantages will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings. The same reference numerals indicate the same parts throughout the drawings. The drawings are not drawn to scale, but rather to illustrate the subject matter of the present invention.

[0022] Figure 1 It is a schematic diagram of the overall structure of the airway auxiliary opening tube for obese patients provided in Example 1 of the present invention.

[0023] Figure 2 This is a schematic diagram of the outer tube structure of the airway auxiliary opening tube for obese patients provided in Example 1 of the present invention.

[0024] Figure 3It is a schematic diagram of the positional relationship between the guide groove and the receiving groove of the airway auxiliary opening tube for obese patients provided in Example 1 of the present invention.

[0025] Figure 4 It is a schematic diagram of the inner tube structure of the airway auxiliary opening tube for obese patients provided in Example 1 of the present invention.

[0026] Figure 5 It is a wireframe diagram of the steps of the method for using the airway auxiliary opening tube for obese patients provided in Example 1 of the present invention. DETAILED DESCRIPTION

[0027] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. It should be noted that the terms used in the present invention are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application.

[0028] The technical solutions in the embodiments of the present invention are described below in conjunction with the drawings in the embodiments of the present invention. It is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work belong to the protection scope of the present invention.

[0029] Embodiment 1:

[0030] The airway auxiliary opening tube for obese patients provided in Example 1 of the present invention is as follows: Figures 1 to 5 As shown, it includes a flexible outer tube 1 and a rigid inner tube 2; the outer tube 1 is made of medical-grade materials with good biocompatibility and flexibility; the outer tube 1 can adapt to the physiological curvature of the airway; a support component 3 for opening the airway is fixed on the outer tube 1; the support component 3 is deformable; the support component 3 can change the shape of the outer tube 1 by deformation; the inner tube 2 is detachably arranged inside the outer tube 1; after the inner tube 2 is inserted into the outer tube 1, the inner tube 2 can provide stable support for the outer tube to prevent the outer tube 1 from deforming.

[0031] When the airway auxiliary opening tube for obese patients provided in Embodiment 1 of the present invention is in operation, the inner end of the outer tube with the inner tube fixed inside is directly manually inserted into the patient's nasal cavity by medical staff; during the insertion process, it is necessary to closely observe the patient's reaction to ensure the safety of the operation; after the insertion is completed, by deforming the support assembly 3, the outer tube 1 can sufficiently support the patient's airway, and then according to the actual situation of the patient, drugs (such as bronchodilators, surface anesthetics, expectorants, glucocorticoids) are put into the inner tube 2. After ensuring that the drug takes effect on the human body, the inner tube 2 is withdrawn from the outer tube 1. The prior art usually uses a single rigid or flexible tube for insertion. The difference from the prior art is that this embodiment uses a combination of a rigid inner tube 2 and a flexible outer tube 1; the rigid inner tube 2 provides a stable support for the flexible outer tube 1 during insertion, greatly enhancing the axial stiffness of the entire airway auxiliary opening tube. When medical staff operate, they can more accurately control the intubation direction and make it smoothly advance along the complex and variable airway physiological curvature of obese patients; avoid the bending, twisting or deviation from the predetermined airway trajectory that may occur due to the excessive flexibility of the outer tube 1; after the rigid inner tube 2 is withdrawn, the part of the space originally occupied by the inner tube 2 inside the outer tube 1 is released, increasing the cross-sectional area of the gas passage, thereby increasing the gas flow rate and being beneficial to improving the patient's ventilation; and the support assembly 3 expands after the outer tube 1 is completely inside the patient's airway. Before the support assembly 3 expands, the outer tube 1 can deform itself to conform to the physiological curvature of the nasal cavity and airway and is more likely to move inside obese patients. After the support assembly 3 expands, the support assembly 3 can push the airway deformed by fat accumulation in obese patients to ensure that the airway remains unobstructed.

[0032] The airway auxiliary opening tube for obese patients provided in this embodiment solves the problem that the airway auxiliary opening tube in the prior art has poor effectiveness for obese patients, can be better inserted into the airway of obese patients, and better ensures airway patency after insertion.

[0033] As a preferred method, in this embodiment, the support component 3 includes a plurality of support bars 31 made of nickel-titanium alloy; the support bars 31 are annular and coaxially sleeved on the outer wall of the outer tube 1; the support bars 31 are evenly distributed along the axis of the outer tube 1. First of all, nickel-titanium alloy has shape memory properties, which brings extremely high precision and reliability to airway support. At room temperature, the support bars 31 can maintain a relatively compact shape to facilitate the smooth insertion of the entire airway auxiliary opening tube into the patient's airway. Once entering the human body and contacting the body temperature environment, the nickel-titanium alloy support bars 31 will quickly and accurately deform according to a pre-set shape memory program and automatically return to the designed expansion state. This adaptive deformation process triggered by body temperature does not require additional complex control equipment or cumbersome manual intervention, which greatly improves the quality of airway support. The operation process is simplified; secondly, the support strip 31 is annular and coaxially sleeved on the outer wall of the outer tube 1, and is evenly distributed along the axis of the outer tube 1. Such a layout ensures that the support force on the outer tube 1 is uniform and balanced; thirdly, the nickel-titanium alloy itself has good biocompatibility, which is crucial for support components that are retained in the human airway for a long time or a short time. During long-term contact with the airway tissue, it will not cause adverse reactions such as allergic reactions and inflammatory stimulation, thereby protecting the patient's airway mucosa to the greatest extent and reducing the risk of potential complications caused by foreign body implantation.

[0034] In this embodiment, the outer tube 1 is made of hydrophilic polyurethane. Hydrophilic polyurethane has excellent biocompatibility, which enables it to be in close contact with the mucosal tissue in the airway of obese patients without causing immune rejection or inflammatory stimulation; in the moist environment of the airway, the hydrophilic polyurethane outer tube 1 can quickly absorb the surrounding moisture, and then form a hydration film on its surface to play a lubricating role; in addition, hydrophilic polyurethane has a relatively loose and porous microstructure. This unique structure provides a natural channel for the diffusion of drug molecules. When the inner tube is put into the drug, the drug molecules can follow these tiny pores and penetrate to the surface of the outer tube at a relatively efficient rate, and directly act on the airway tissue.

[0035] In this embodiment, the inner layer tube 2 is a hollow tube body with a closed inner end; a plurality of side holes 21 are formed in the side wall of the inner layer tube 2; the outer end of the inner layer tube 2 is a drug administration interface. Medical staff can put drugs into the inner layer tube 2 from the drug administration interface; the inner layer tube 2 is in the form of a hollow tube body with a closed inner end, and this design provides a relatively independent and closed channel environment for drug delivery; during the process of administering drugs to the airway of obese patients, it can effectively prevent drug leakage or reflux, ensuring that the drug flows accurately to the target airway site along the predetermined path; the plurality of side holes 21 formed in the side wall of the inner layer tube 2 enable the drug to be evenly released into the airway from multiple directions; due to factors such as fat accumulation, the airway of obese patients often has an irregular shape and uneven internal pressure distribution, and the plurality of side holes 21 can adapt to this complex situation, ensuring that the drug comprehensively covers the key parts of the airway. Whether it is a narrow part or a curved part of the airway, the drug can effectively reach, improving the comprehensiveness of the drug effect, avoiding too high or too low local drug concentration, and optimizing the treatment effect; the existence of the side holes 21 helps the drug to quickly disperse in the airway. When the drug flows out from the side holes 21, it will spread rapidly in the airway by means of the patient's breathing airflow and the flow power of the tissue fluid in the airway, accelerating the onset speed of the drug, enabling drugs such as bronchodilators and surface anesthetics to more quickly exert their functions of dilating the airway and reducing irritation, and promptly relieving the discomfort symptoms of the patient.

[0036] In this embodiment, the inner layer tube 2 is made of a carbon fiber reinforced composite material. Carbon fiber itself has extremely high strength, and the inner layer tube 2 made of the composite material reinforced with it can provide stable support for the outer layer tube 1; moreover, compared with some traditional metal or alloy materials used to make similar structures, the inner layer tube 2 made of carbon fiber reinforced composite material has a small weight, which can reduce the additional burden borne by the airway and surrounding tissues after intubation; furthermore, in this special environment of the airway, it is filled with various body fluids, secretions and possible drug components, and the carbon fiber reinforced composite material can withstand the erosion of these complex chemical substances; although the inner layer tube 2 is mainly inside the outer layer tube 1 and has less direct contact with the airway, in the case of long-term use or accidental damage, its good biocompatibility can ensure that it will not cause adverse reactions such as allergic reactions and immune rejection of the body.

[0037] In this embodiment, the outer wall of the outer tube 1 is provided with a plurality of striped protrusions 11; the protrusions 11 are distributed along the circumference of the tube axis of the outer tube 1. In this embodiment, preferably: the annular inner wall of the support strip 31 is in contact with the outer wall of the outer tube, and an opening is provided on the protrusion 11 for accommodating the support strip 31, so as to ensure that the support strip 31 is in close contact with the outer wall of the outer tube 1. In the process of inserting the outer tube 1 of this embodiment in conjunction with the inner tube 2 into the patient's body, the striped linear protrusions 11 can effectively reduce the friction coefficient between the outer tube 1 and the airway tissue; because the airway of obese patients is relatively narrow and the surface is often not smooth enough, and there are mucosal folds, secretions, etc., these protrusions 11 make the outer tube 1 not have a large area of ​​hard friction when inserted, but contact with the airway wall through the protruding parts, thereby reducing the scratching damage to the airway mucosa and reducing the patient's discomfort (when the outer tube 1 is pulled out of the human body, the protrusion 11 can also reduce the contact between the annular support strip 31 and the human body along the tube axis direction of the outer tube 1). From the perspective of structural stability, when the support assembly 3 opens the outer tube 1 to support the airway, the protrusions 11 can help disperse the pressure exerted on the outer tube 1 by the airway wall, thereby preventing the outer tube 1 from being locally deformed or collapsed due to excessive force at a single point, thereby ensuring that the airway always maintains a good open state; in addition, during the operation, medical staff can more intuitively judge the rotation direction and position of the outer tube 1 by touching or visually observing these protrusions 11, which facilitates the precise control of the intubation action and ensures the precise control of the relative position of the inner tube 2 and the outer tube 1.

[0038] In this embodiment, the inner wall of the outer tube 1 is provided with a strip-shaped guide groove 12; the guide groove extends along the extension direction of the outer tube 1; the outer wall of the inner tube 2 is provided with a guide block 23; the guide block 23 can be slidably fixed in the guide groove 12, and in the process of inserting the inner tube 2 into the outer tube 1, the guide block 23 moves smoothly along the guide groove 12 to avoid deviation, dislocation and the like; when medical staff install or remove the inner tube 2, they can easily and quickly complete the operation with the guidance of the guide groove 12 and the guide block 23; due to the constraints of the guide groove 12 and the guide block 23, the inner tube 2 is more stable when conveying drugs, and there will be no drug leakage or uneven spraying due to shaking or rotational displacement of the tube body.

[0039] In this embodiment, the inner wall of the outer tube 1 is further provided with a receiving groove 13; the receiving groove 13 is connected to the guide groove 12; the receiving groove 13 is arranged on the side of the guide groove 12; the shape of the receiving groove 13 matches that of the guide block 23; when the guide block 23 is at the connection between the guide groove 12 and the receiving groove 13, the inner tube 2 rotates relative to the tube axis direction of the inner tube 2, and the guide block 23 can be driven to move into the receiving groove 13. The guide block 23 can be moved into the receiving groove 13 to limit the axial movement (axial direction, i.e., along the tube axis direction of the outer tube 1) between the outer tube 1 and the inner tube 2, which is a preferred mode of this embodiment.

[0040] In this embodiment, a handle 24 is fixed to the outer end of the inner tube 2; the outer wall of the inner tube 2 and the inner wall of the outer tube 1 are provided with a Teflon coating. When medical staff perform various operations on the airway auxiliary opening tube, the handle 24 provides them with a stable and easy-to-hold point, which facilitates the assembly process of inserting the inner tube 2 into the outer tube 1, accurately adjusting the position of the inner tube 2 in the airway, and pulling the inner tube 2 out of the outer tube 1; the Teflon coating facilitates the relative movement of the inner tube 2 and the outer tube 1 with its extremely low friction coefficient, and the Teflon coating has good biocompatibility and is not easy to damage the human body.

[0041] Example 2

[0042] Different from the nickel-titanium alloy support bar 31 in Example 1, this embodiment replaces the support bar 31 in Example 1 with an airbag. The support bar 31 in this embodiment is an airbag, which is arranged around the outer circumference of the outer tube 1. The outer tube is provided with an inflation channel connected to the airbag, and the outer end of the inflation channel is provided with an inflation interface; the inflation interface is at the outer end of the outer tube. The airbag is placed in the pipeline and the corresponding structure equipped with an inflation channel is prior art, such as the "injection tube" and the inflation channel of this embodiment, and the "cuff" and the airbag of this embodiment disclosed in Chinese Patent Application No. 201921775924.3. In this embodiment, by adopting the support strip 31 of the airbag, medical staff can connect the inflation device to the inflation interface, accurately control the amount of gas filled into the airbag according to the actual condition of the airway of the obese patient, and then finely adjust the support strength of the airbag to the outer tube 1. The degree of deformation of the airway due to fat squeezing varies in different obese patients. Some areas may only need slight expansion, while others may require greater support force. The airbag structure can flexibly adapt to such personalized needs. Compared with the rigid support strip, the surface of the airbag is relatively soft and elastic after inflation, which can better fit the irregular contour of the airway. The airway of obese patients is complex, with many bends and wrinkles. The airbag can apply pressure evenly along these morphological changes, reduce the local concentrated pressure on the airway mucosa, and reduce the foreign body sensation and discomfort of the patient during use.

[0043] Example 3

[0044] The method for using the airway auxiliary opening tube for obese patients comprises the following steps:

[0045] S101: Disinfect the inner tube and the outer tube, and insert the inner tube into the outer tube to fix it. Strict disinfection steps can effectively kill bacteria, viruses and other pathogens that may be attached to the surface of the tube, greatly reducing the risk of infection for patients; accurately insert the inner tube into the outer tube and fix it, and use the cooperation of the guide groove on the inner wall of the outer tube 1 and the guide block on the outer wall of the inner tube 2 to ensure the relative position of the two is stable, providing a structural basis for subsequent smooth intubation and drug delivery, and avoiding the loosening and dislocation of the tube during the operation to affect the treatment effect.

[0046] S102: Surface anesthesia is performed on the patient, and the inner end of the outer tube with the inner tube fixed inside is inserted from the patient's nasal cavity, and slowly inserted according to the physiological curvature of the patient's airway until it reaches the predetermined position. Surface anesthesia can reduce the stimulation of the patient's nasal cavity and airway mucosa during intubation, effectively relieve the patient's pain and discomfort, reduce adverse conditions such as airway spasm and increased secretions caused by stress response, improve patient compliance, and enable the intubation operation to proceed smoothly; slowly insert according to the unique physiological curvature of the patient's airway, thanks to the stable support provided by the rigid inner tube 2 for the flexible outer tube 1, medical staff can accurately control the direction of intubation, just like moving forward along a precise navigation, successfully avoiding many twists and turns and obstacles in the airway, greatly improving the success rate of first-time intubation, and reducing the mechanical damage to the airway caused by repeated intubation.

[0047] S103: When the outer tube reaches the predetermined position, the corresponding operation is performed according to the type of the support component to open it; if the support component is a nickel-titanium alloy support bar, the patient's body temperature is waited for the nickel-titanium alloy support bar to open due to heat transfer; if the support component is an airbag, the airbag is slowly inflated through the inflation interface to expand the airbag and open the airway. Corresponding strategies are adopted for different types of support components to give full play to their advantages. For the nickel-titanium alloy support bar, its excellent shape memory characteristics are utilized to trigger deformation by the patient's own body temperature, without the need for additional complex control equipment, which not only simplifies the operation process, especially in emergency treatment scenarios, it saves precious time for medical staff, and can also ensure that the support bar accurately opens the airway according to the preset shape, providing stable protection for gas exchange; while the airbag structure adjusts the support strength through inflation. Medical staff can finely control the inflation amount according to the actual pressure of the airway of obese patients, realize personalized support for the airway, accurately open the airway parts with different degrees of pressure, and avoid excessive expansion to cause damage to airway tissue, thereby improving the adaptability of the airway auxiliary opening tube.

[0048] S104: After confirming that the support component has fully opened, introduce the medicament into the inner tube from the outer end of the inner tube. Introducing the medicament after the support component has successfully expanded the airway and ensured its patency creates ideal conditions for the efficient delivery of the drug. The inner tube 2, as a dedicated drug delivery channel, has a rigid structure and multiple side holes on its sidewall, ensuring that the drug can flow smoothly along a predetermined path without problems such as drug diversion, sedimentation, or leakage due to pipeline deformation. The drug can be precisely released through the side holes of the inner tube 2 to key parts of the airway, and with the help of the patient's breathing airflow and the flow power of the tissue fluid in the airway, it can quickly spread in the airway, ensuring that the drug acts quickly and effectively on the target area, accelerating the remission of the patient's condition and enhancing the therapeutic effect of the drug.

[0049] S105: After the administration is completed, pull out the inner tube from the outer tube. Pulling out the inner tube in a timely manner after the administration, on the one hand, avoids drug residue in the gap between the inner tube and the outer tube, reducing the risk of drug contamination of the inner wall of the outer tube and other subsequent contact instruments and equipment, ensuring the safety of drug use in this treatment, and also reducing the hidden danger of cross-infection for the repeated use of subsequent instruments or other medical operations; on the other hand, after the rigid inner tube 2 is pulled out, the part of the space originally occupied by the inner tube 2 in the outer tube 1 is released, increasing the cross-sectional area of the channel through which gas can pass, thereby increasing the gas flow rate, which is beneficial to improving the patient's ventilation and further optimizing the patient's breathing condition, creating more favorable conditions for the patient's recovery.

[0050] In summary, the present invention provides an airway auxiliary opening tube for obese patients, which relates to the field of medical tracheas, and includes a flexible outer tube and a rigid inner tube; the outer tube is made of a medical-grade material with good biocompatibility and flexibility; the outer tube can adapt to the physiological curvature of the airway; a support component for expanding the airway is fixed on the outer tube; the support component is deformable; the support component can change the shape of the outer tube through deformation; the inner tube is detachably arranged inside the outer tube; after the inner tube is inserted into the outer tube, the inner tube can provide stable support for the outer tube to prevent the outer tube from deforming. The airway auxiliary opening tube for obese patients provided by the present invention solves the problem of poor effectiveness of the existing airway auxiliary opening tube for obese patients, can be better inserted into the airway of obese patients, and can better ensure airway patency after insertion.

[0051] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made by using the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present invention.

Claims

1. An airway auxiliary opening tube for obese patients, characterized in that, It includes a flexible outer tube and a rigid inner tube; The outer tube is made of a medical-grade material with good biocompatibility and flexibility; the outer tube can adapt to the physiological curvature of the airway; A support assembly for expanding the airway is fixed on the outer tube; The support assembly is deformable; the support assembly can change the shape of the outer tube through deformation; The inner tube is detachably arranged inside the outer tube; after the inner tube is inserted into the outer tube, the inner tube can provide stable support for the outer tube to prevent the outer tube from deforming.

2. The airway auxiliary opening tube for obese patients according to claim 1, wherein The support assembly includes several support bars made of memory material; The support bars are annular and coaxially sleeved on the outer wall of the outer tube; The support bars are evenly distributed along the axis of the outer tube.

3. The airway auxiliary opening tube for obese patients according to claim 2, wherein The support bars are support bars made of nitinol alloy.

4. The airway auxiliary opening tube for obese patients according to claim 2, wherein The support bars are air bags, the air bags are arranged around the outer periphery of the outer tube, an inflation channel communicated with the air bags is arranged on the outer tube, and an inflation interface is arranged at the outer end of the inflation channel; the inflation interface is at the outer end of the outer tube.

5. The airway auxiliary opening tube for obese patients according to claim 1, wherein The outer tube is an outer tube made of hydrophilic polyurethane material.

6. The airway auxiliary opening tube for obese patients according to claim 1, wherein The inner tube is a hollow tube body with a closed inner end; a plurality of side holes are opened on the side wall of the inner tube; the outer end of the inner tube is a drug delivery interface.

7. The airway auxiliary opening tube for obese patients according to claim 1, wherein The inner tube is an inner tube made of carbon fiber reinforced composite material.

8. The airway auxiliary opening tube for obese patients according to claim 1, wherein A plurality of stripe-like protrusions are arranged on the outer wall of the outer tube; The protrusions are circumferentially distributed along the tube axis of the outer tube.

9. The airway auxiliary opening tube for obese patients according to claim 1, wherein Strip-shaped guiding grooves are arranged on the inner wall of the outer tube; the guiding grooves extend along the extending direction of the outer tube; guiding blocks are arranged on the outer wall of the inner tube; the guiding blocks can be slidably fixed in the guiding grooves.

10. The airway auxiliary opening tube for obese patients according to claim 1, wherein A receiving groove is further opened on the inner wall of the outer tube; the receiving groove communicates with the guiding groove; the receiving groove is arranged on the side of the guiding groove; the receiving groove matches the shape of the guiding block; when the guiding block is at the connection of the guiding groove and the receiving groove, the inner tube rotates in the direction of the tube axis of the inner tube, which can drive the guiding block to move into the receiving groove.

11. The airway auxiliary opening tube for obese patients according to claim 1, wherein A handle is fixed on the outer end of the inner tube; and a Teflon coating is provided on the outer wall of the inner tube and the inner wall of the outer tube.

12. A method for operating an airway auxiliary opening tube for obese patients as described in claims 1 to 10, characterized in that, Includes steps: S101: Disinfect the inner tube and the outer tube, and insert the inner tube into the outer tube and fix it; S102: Surface anesthesia is performed on the patient, and the inner end of the outer tube with the inner tube fixed inside is inserted into the patient's nasal cavity, and the inner end is slowly inserted according to the physiological curvature of the patient's airway until it reaches a predetermined position; S103: When the outer tube reaches the predetermined position, corresponding operations are performed according to the type of the support component to open it; if the support component is a nickel-titanium alloy support bar, wait for the patient's own body temperature to transfer heat to the nickel-titanium alloy support bar to open it; If the support component is an airbag, slowly inflate the airbag through the inflation interface to expand the airbag and open the airway; S104: After confirming that the support assembly is fully opened, introducing the agent into the inner tube from the outer end of the inner tube; S105: After the administration is completed, the inner tube is pulled out from the outer tube.

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