Trachea cannula capable of implementing throat soothing anesthesia
By designing the dosing tank and nozzle structure in the tracheal intubation, ensuring that the anesthetic drugs are sprayed evenly during the intubation process and adjusted according to the respiratory conditions, the problem of inaccurate administration of anesthetic drugs is solved, and rapid anesthesia and reduced stress response are achieved. Effect.
Patent Information
- Application Number
- CN202311802573.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-26
- Publication Date
- 2024-12-13
AI Technical Summary
During the tracheal intubation, it is difficult to accurately and efficiently apply anesthetic drugs to the respiratory surface at the corresponding position of the tracheal intubation, resulting in slow anesthesia effect and inaccurate position, which increases the patient's stress response.
A tracheal intubation can be designed to perform laryngeal anaesthesia, including a cannula body, a dosing tube, a dosing tank and a dosing nozzle. Through the control of the dosing valve and the structure of the deflector, the anesthetic drug is ensured in the trachea. The cannula insertion and fine-tuning stages are sprayed evenly on the surface of the respiratory tract, and the dosing nozzle is driven by the airflow during breathing or mechanical ventilation to achieve intermittent spraying of anesthetic drugs, and the spraying volume is adjusted according to the patient's breathing condition.
The accurate application of anesthetic drugs to the respiratory surface at the corresponding position of the tracheal intubation is achieved, and it takes effect quickly, reducing the patient's stress response, and reducing the waste of anesthetic drugs by matching the amount of spraying stress response.
Smart Images
Figure CN119113305A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of endotracheal intubation, and in particular to an endotracheal intubation capable of implementing laryngeal relief anesthesia. Background Art
[0002] Endotracheal intubation refers to the technique of inserting a special tube into the trachea through the mouth (oral endotracheal intubation) or nose (nasotracheal intubation) through the pharynx and larynx. Endotracheal intubation is widely used in patients with congenital and acquired upper airway obstruction who need to immediately establish a controllable artificial airway, patients with lower airway secretion retention who need suction drainage, patients who need artificial resuscitation, patients with respiratory failure who need artificial assisted ventilation, and patients who need endotracheal anesthesia for surgical operations.
[0003] The general steps of endotracheal intubation include: 1. Adjust the patient's position, make the patient lie flat and tilt the head up, insert the laryngoscope into the patient's mouth, and use the tip of the laryngoscope to hold the patient's upper palate to fully expose the patient's glottis; 2. Insert the endotracheal tube into the patient's glottis, and insert the dental pad while pulling out the laryngoscope; 3. Use a stethoscope to listen symmetrically to see if the breathing sounds on both sides of the lungs are equal, and make fine adjustments to the larynx; 4. Fix the endotracheal tube and dental pad. It is not difficult to see from the general steps of endotracheal intubation that during the endotracheal intubation, the endotracheal tube needs to enter the patient's upper pharynx and will come into contact with the patient's throat. The endotracheal tube causes strong harmful stimulation to the throat, which will cause the patient to have a stress response. According to studies, the stress response to intubation is the strongest 30-45 seconds after the use of the laryngoscope.
[0004] The method of anesthetizing the local surface of the respiratory mucosa is a common method to prevent the patient's stress response during endotracheal intubation. This method is simple and convenient, and anesthetic drugs such as lidocaine are used by spray or atomization inhalation to achieve the effect of local anesthesia of the respiratory tract. However, it is difficult to accurately and efficiently apply anesthetic drugs to the respiratory tract surface corresponding to the endotracheal tube through external spray or atomization inhalation, resulting in slow anesthetic effect of anesthetic drugs and insufficient accuracy of the anesthesia position. Summary of the invention
[0005] The purpose of the present invention is to provide an endotracheal tube capable of implementing laryngeal soothing anesthesia, so as to solve the problem that anesthetic drugs are difficult to be accurately and efficiently applied to the respiratory tract surface at the corresponding position of the endotracheal tube.
[0006] In order to achieve the above-mentioned object, the technical scheme of the present invention is as follows: an endotracheal intubation tube capable of implementing laryngeal soothing anesthesia comprises an intubation tube body, a drug delivery tube is fixedly connected to the side wall of the intubation tube body, a plurality of drug delivery grooves are opened on the side wall of the intubation tube body, the drug delivery grooves are evenly arranged along the length direction of the intubation tube body, and a flow guide is fixedly connected to the inner side wall of the intubation tube body corresponding to the drug delivery groove;
[0007] A dosing nozzle is slidably connected in the dosing groove, a limit ring groove is provided on the side wall of the cannula body on the side of the dosing groove, a limit disk is fixedly connected to the side wall of the dosing nozzle, the limit disk extends into the limit ring groove, a drug storage ring cavity is also provided on the side wall of the cannula body on the side of the dosing groove, a dosing channel is provided between the drug storage ring cavity and the limit ring groove, the diameters at both ends of the dosing channel are smaller than the middle diameter, a plurality of dosing shafts are fixedly connected to the limit disk, the dosing shafts are slidably connected to the dosing channel, a blocking ball is placed in the dosing channel away from one end of the dosing shaft, elastic parts are provided between the blocking ball and the dosing shaft and between the limit disk and the limit groove, a drug delivery channel is provided in the dosing shaft and the limit disk, and both ends of the drug delivery channel are connected with the dosing channel and the dosing nozzle;
[0008] The medicine outlet ring cavity is communicated with the medicine delivery tube, and the medicine delivery tube is provided with a medicine delivery valve.
[0009] The technical principles of the above scheme are as follows:
[0010] When the endotracheal tube is not in use, the drug delivery valve is closed, a closed space is formed in the air supply ring groove, and the drug delivery nozzle cannot slide along the drug delivery groove and is in a fixed state. During the endotracheal tube insertion stage, the drug delivery valve is opened, and anesthetic drugs are delivered to each drug delivery ring cavity through the drug delivery tube. The anesthetic drugs impact the blocker, so that the drug delivery ring cavity, the drug delivery channel and the drug delivery channel are connected, and the anesthetic drugs are delivered to the drug delivery nozzle, thereby delivering the anesthetic drugs to the respiratory tract surface. The spraying depth of the anesthetic drugs on the respiratory tract surface changes with the depth of the endotracheal tube, so that the anesthetic drugs are sprayed on the deeper respiratory tract surface.
[0011] During the fine-tuning stage of endotracheal intubation, when the patient breathes gas or is mechanically ventilated externally, the airflow squeezes the dosing nozzle through the guide piece, the dosing nozzle is squeezed outward, the elastic force of the elastic piece on the blocking ball is weakened, and the anesthetic drug in the drug storage ring cavity flows into the dosing channel. When the dosing nozzle is reset, the elastic piece squeezes the blocking ball again to close the drug storage ring cavity and the drug supply channel, and the dosing shaft compresses the space in the dosing channel, so that the anesthetic drug enters the dosing nozzle through the drug delivery channel, and the anesthetic drug is sprayed into the patient's respiratory tract through the dosing nozzle.
[0012] The above scheme has the following beneficial effects:
[0013] 1. In this scheme, during the endotracheal intubation insertion stage, the spraying position of the anesthetic drug changes with the position of the endotracheal intubation, that is, the deeper the endotracheal intubation is, the anesthetic drug can be sprayed on the deeper respiratory tract. Compared with the existing technology, it can ensure that the anesthetic drug can be accurately applied to the respiratory tract surface corresponding to the position of the endotracheal intubation; in the fine-tuning endotracheal intubation stage, the spraying position of the anesthetic drug can still change with the intubation position. Compared with the existing technology, the anesthetic drug can infiltrate the local surface of the respiratory tract faster, make the anesthetic drug anesthesia take effect quickly, and effectively reduce the patient's stress response during the endotracheal intubation process.
[0014] 2. This solution, during the fine-tuning stage of the endotracheal intubation and after the endotracheal intubation is fixed, achieves intermittent spraying of anesthetic drugs through the patient's breathing or mechanical ventilation. Compared with the existing technology, it can ensure that anesthetic drugs can be effectively applied to the corresponding area between the patient's respiratory tract and the endotracheal intubation, and the administration of anesthetic drugs will be suspended after the drug delivery valve is closed.
[0015] 3. In this scheme, when the anesthetic drug is sprayed intermittently, the amount of each spray is proportional to the intensity of the patient's breathing. When the patient has a stress response, his breathing is more intense, and the amount of anesthetic drug sprayed in a single time also increases accordingly. When the patient's stress response weakens, his breathing is calmer, and the amount of anesthetic drug sprayed in a single time also decreases accordingly. Compared with the existing technology, the amount of anesthetic drug administered can be matched with the patient's stress response, ensuring effective anesthesia and reducing waste of anesthetic drugs.
[0016] Furthermore, the guide piece is a T-shaped structure consisting of a vertical surface and a horizontal surface, the vertical surface of the guide piece is perpendicular to the inner wall of the cannula body, and both ends of the vertical surface of the guide piece are fixedly connected to the side walls of the cannula body on both sides of the medication groove.
[0017] Beneficial effect: The T-shaped flow guide can guide the patient's exhalation and inhalation airflow.
[0018] Furthermore, the medication tube is connected to a medication tank, and the medication valve is located at the front end of the medication tank. The medication tank is also connected to an air supply pipe, and an air supply valve is provided on the air supply pipe. The air supply valve is also located at the front end of the medication tank.
[0019] Beneficial effect: By switching the drug delivery valve and the air supply valve, it is possible to switch whether to continue adding anesthetic drugs into the drug delivery ring cavity.
[0020] Furthermore, one end of the air supply pipeline away from the medication tank is connected to an air supply air bag.
[0021] Beneficial effect: auxiliary drug delivery is achieved by closing the drug delivery valve and opening the air supply valve, and squeezing the air supply bag.
[0022] Furthermore, a blocking ball is placed in the medication channel, and one end of the blocking ball is a conical structure, and the blocking ball is placed in the conical structure area of the medication channel.
[0023] Beneficial effect: ensuring that the blocking ball can more stably close and open the channel between the drug delivery channel and the drug delivery ring cavity.
[0024] Furthermore, three drug administration grooves are arranged circumferentially along the axis of the cannula body, and the drug administration grooves in adjacent layers are arranged at intervals.
[0025] Beneficial effect: The drug delivery nozzle can more comprehensively administer anesthetic drugs to the respiratory tract surface at the corresponding position of the endotracheal tube.
[0026] Furthermore, one end of the medication groove close to the outer side wall of the cannula body is a tapered structure.
[0027] Beneficial effect: A single dosing nozzle can cover a wider range.
[0028] Furthermore, a fixed air bag is arranged on the outer side wall of one end of the cannula body, the fixed air bag is connected with an air supply pipe, and the end of the air supply pipe away from the fixed air bag is connected with an air supply connection assembly.
[0029] Beneficial effect: After the fixing airbag is inflated, the endotracheal tube can be fixed more stably.
[0030] Furthermore, the side wall of the cannula body is provided with scale lines, and the scale lines are arranged along the length direction of the cannula body.
[0031] Beneficial effect: The scale line can assist medical staff in judging the depth of tracheal intubation.
[0032] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0033] Figure 1 This is a schematic diagram of the structure of a tracheal intubation tube with a drug delivery slot for implementing laryngeal relief anesthesia according to the present invention;
[0034] Figure 2 This is a schematic diagram of the structure of the endotracheal tube embodiment of the present invention that can implement laryngeal soothing anesthesia without the drug delivery groove;
[0035] Figure 3 It is a front view of an embodiment of a tracheal intubation tube capable of implementing laryngeal relief anesthesia according to the present invention;
[0036] Figure 4 A is a partial enlarged schematic diagram of an embodiment of a tracheal intubation tube capable of implementing laryngeal relief anesthesia according to the present invention;
[0037] Figure 5 This is a cross-sectional view of a drug delivery canister according to an embodiment of a tracheal intubation tube capable of implementing laryngeal relief anesthesia according to the present invention.
[0038] The figure marks in the drawings of the specification include: 1. cannula body; 2. scale line; 3. dosing groove; 4. dosing tank; 5. dosing tube; 6. air supply connection assembly; 7. air supply tube; 8. fixed air bag; 9. guide piece; 10. dosing ring cavity; 11. blocking ball; 12. dosing channel; 13. spring; 14. drug delivery channel; 15. dosing nozzle; 16. limiting ring groove; 17. limiting disk; 18. dosing shaft; 19. air supply valve; 20. dosing valve; 21. air supply tube. DETAILED DESCRIPTION
[0039] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0040] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.
[0041] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0042] The following is further described in detail through specific implementation methods:
[0043] Implementation example Figure 1-3 As shown: A tracheal intubation tube for implementing laryngeal relief anesthesia includes a cannula body 1, which is a transparent tube made of PVC material or silicone material. The cannula body 1 is arc-shaped as a whole, and the openings at both ends of the cannula body 1 are 45° inclined. A fixed airbag 8 is bonded and fixed to the outer wall of one end of the cannula body 1, and the fixed airbag 8 is located at the end to be inserted into the patient's glottis. The fixed airbag 8 is connected to an air supply tube 7, and the end of the air supply tube 7 away from the fixed airbag 8 is connected to an air supply connection component 6.
[0044] The side wall of the cannula body 1 is provided with scale lines 2, which are arranged along the length direction of the cannula body 1. The length of the cannula body 1 is 22 to 28 cm to meet the requirements of males and females for the depth of tracheal intubation. The insertion length for females is approximately 20 to 22 cm, and the insertion length for males is approximately 22 to 24 cm. The diameter of the cannula body 1 is set according to the practical population. The diameter of the cannula body 1 for male patients is 8.0 to 8.5 mm, and the diameter of the cannula body 1 for male patients is 7.5 to 8.0 mm.
[0045] The air supply connection assembly 6 is composed of a pressure sensing device and a one-way inflation valve. The air pressure in the fixed airbag 8 is detected by the pressure sensing device, and the airbag is inflated through the one-way inflation valve to ensure that there is sufficient air pressure in the airbag. The fixed airbag 8 can prevent secretions from the oral cavity and stomach from entering the lungs and causing pneumonia. It can also play a role in fixing the cannula body 1.
[0046] Combined with Figure 5 As shown, a medication tube 5 is bonded and fixed to the side wall of the cannula body 1, and the medication tube 5 is connected to the medication tank 4. The medication tube 5 located at the front end of the medication tank 4 is connected to the medication valve 20. The medication tank 4 is also connected to an air supply tube 21, and the air supply tube 21 is connected to the air supply valve 19, which is also located at the front end of the medication tank 4. In addition, the air supply tube 21 is connected to an air supply airbag at one end away from the medication tank 4.
[0047] When both the air supply valve 19 and the drug administration valve 20 are closed, anesthetic drugs cannot be administered. When either of them is opened, anesthetic drugs can be administered normally. When only the drug administration valve 20 is opened, anesthetic drugs are continuously replenished. When only the air supply valve 19 is opened, anesthetic drugs are not replenished. At the same time, anesthetic drugs can be administered with the assistance of an air supply bag.
[0048] A plurality of drug administration grooves 3 are provided on the side wall of the cannula body 1, and the drug administration grooves 3 are evenly arranged along the length direction of the cannula body 1. The drug administration grooves 3 are divided into a plurality of layers, and each layer has three drug administration grooves 3 arranged circumferentially along the axis of the cannula body 1, and the drug administration grooves 3 of adjacent layers are arranged at intervals to avoid mutual interference between the drug administration grooves 3 of adjacent layers and to improve the coverage of the drug administration grooves 3 on the patient's respiratory tract.
[0049] In addition, the end of the dosing groove 3 close to the outer wall of the cannula body 1 is a conical structure. When the anesthetic drug is discharged outward through the dosing groove 3, the side wall of the dosing groove 3 can avoid blocking the anesthetic drug, thereby promoting the anesthetic drug to be effectively applied to the patient's respiratory tract surface and the application range is wider.
[0050] The inner wall of the cannula body 1 corresponding to the medication slot 3 is fixedly connected with a flow guide 9. Specifically, the flow guide 9 is a T-shaped structure composed of a vertical surface and a horizontal surface. The vertical surface of the flow guide 9 is perpendicular to the inner wall of the cannula body 1, and the two ends of the vertical surface of the flow guide 9 are fixedly connected to the side walls of the cannula body 1 on both sides of the medication slot 3. When air flows through the cannula body 1, both the outward and inward air flows can effectively contact the flow guide 9 and guide the air flow into the medication slot 3 through its horizontal surface.
[0051] Combined with Figure 4 As shown, a dosing nozzle 15 is slidably connected in the dosing groove 3, a limiting ring groove 16 is provided on the side wall of the cannula body 1 on the side of the dosing groove 3, a limiting disk 17 is integrally formed on the side wall of the dosing nozzle 15, and the limiting disk 17 extends into the limiting ring groove 16, and a drug storage ring cavity is also provided on the side wall of the cannula body 1 on the side of the dosing groove 3, and the drug outlet ring cavity is connected to the dosing tube 5.
[0052] A drug administration channel 12 is opened between the drug storage ring cavity and the limiting ring groove 16. The diameters at both ends of the drug administration channel 12 are smaller than the middle diameter. A plurality of drug administration shafts 18 are fixedly connected to the limiting disk 17. The drug administration shafts 18 are slidably connected to the drug administration channel 12. A blocking ball 11 is placed in the drug administration channel 12 at one end away from the drug administration shaft 18, and the end of the drug administration channel 12 where the blocking ball 11 is placed has a conical structure, and the blocking ball 11 is placed in the conical structure area of the drug administration channel 12.
[0053] Elastic parts are arranged between the blocking ball 11 and the drug delivery shaft 18 and between the limiting disk 17 and the limiting groove. The elastic part in this embodiment is a spring 13. Drug delivery channels 14 are opened in the drug delivery shaft 18 and the limiting disk 17. Both ends of the drug delivery channel 14 are connected to the drug delivery channel 12 and the drug delivery nozzle 15.
[0054] The specific implementation process is as follows:
[0055] When the endotracheal tube is not in use, the medication valve 20 and the air supply valve 19 are both closed, a closed space is formed in the air supply ring groove, and the medication nozzle 15 cannot slide along the medication groove 3 and is in a fixed state.
[0056] During the endotracheal tube insertion stage, the patient is positioned correctly, a laryngoscope is inserted into the patient's mouth, and the tip of the laryngoscope is used to hold the patient's upper jaw while inserting the laryngoscope into the patient's mouth, and the laryngoscope is lifted up forcefully to fully expose the glottis. The drug administration valve 20 is opened, and anesthetic drugs are delivered into each drug administration ring cavity 10 through the drug administration tube 5. The anesthetic drugs impact the obstruction device, so that the drug administration ring cavity 10, the drug administration channel 12 and the drug delivery channel 14 are connected, and the anesthetic drugs are delivered to the drug administration nozzle 15, thereby delivering the anesthetic drugs to the respiratory tract surface. The spraying depth of the anesthetic drugs on the respiratory tract surface changes with the depth of the endotracheal tube, thereby spraying the anesthetic drugs on the deeper respiratory tract surface.
[0057] During the fine-tuning stage of the endotracheal tube and the subsequent use stage of the endotracheal tube, when the patient breathes gas or is mechanically ventilated, the airflow squeezes the dosing nozzle 15 through the guide member 9, and the dosing nozzle 15 is squeezed outward, and the elastic force of the elastic member on the blocking ball 11 is weakened, and the anesthetic drug in the drug storage ring cavity flows into the dosing channel 12. When the dosing nozzle 15 is reset, the elastic member squeezes the blocking ball 11 again to close the drug storage ring cavity and the drug supply channel, and the dosing shaft 18 compresses the space in the dosing channel 12, so that the anesthetic drug enters the dosing nozzle 15 through the drug delivery channel 14, and the anesthetic drug is sprayed into the patient's respiratory tract through the dosing nozzle 15.
[0058] The endotracheal tube can ensure that the anesthetic drug can be accurately applied to the respiratory tract surface corresponding to the position of the endotracheal tube, and the spraying position of the anesthetic drug can be changed with the position of the tube, so that the anesthetic drug can infiltrate the local surface of the respiratory tract more quickly, so that the anesthetic drug anesthesia takes effect quickly, and effectively reduce the patient's stress response during the endotracheal intubation process.
[0059] In addition, when anesthetic drugs are sprayed intermittently, the amount of each spray is proportional to the intensity of the patient's breathing. When the patient has a stress response, his breathing is more intense, and the amount of anesthetic drugs sprayed in a single time also increases accordingly. When the patient's stress response weakens, his breathing is calmer, and the amount of anesthetic drugs sprayed in a single time also decreases accordingly. This allows the amount of anesthetic drugs administered to match the patient's stress response, ensuring effective anesthesia and reducing waste of anesthetic drugs.
[0060] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.
Claims
1. A tracheal intubation for laryngeal relief anesthesia, characterized in that: It comprises a cannula body, a drug delivery tube is fixedly connected to the side wall of the cannula body, a plurality of drug delivery grooves are opened on the side wall of the cannula body, the drug delivery grooves are evenly arranged along the length direction of the cannula body, and a flow guide is fixedly connected to the inner side wall of the cannula body corresponding to the drug delivery groove; A dosing nozzle is slidably connected in the dosing groove, a limit ring groove is provided on the side wall of the cannula body on the side of the dosing groove, a limit disk is fixedly connected to the side wall of the dosing nozzle, the limit disk extends into the limit ring groove, a drug storage ring cavity is also provided on the side wall of the cannula body on the side of the dosing groove, a dosing channel is provided between the drug storage ring cavity and the limit ring groove, the diameters at both ends of the dosing channel are smaller than the middle diameter, a plurality of dosing shafts are fixedly connected to the limit disk, the dosing shafts are slidably connected to the dosing channel, a blocking ball is placed in the dosing channel away from one end of the dosing shaft, elastic parts are provided between the blocking ball and the dosing shaft and between the limit disk and the limit groove, a drug delivery channel is provided in the dosing shaft and the limit disk, and both ends of the drug delivery channel are connected with the dosing channel and the dosing nozzle; The medicine outlet ring cavity is communicated with the medicine delivery tube, and the medicine delivery tube is provided with a medicine delivery valve.
2. The endotracheal intubation for laryngeal relief anesthesia according to claim 1, characterized in that: The guide piece is a T-shaped structure composed of a vertical surface and a horizontal surface. The vertical surface of the guide piece is perpendicular to the inner wall of the cannula body, and both ends of the vertical surface of the guide piece are fixedly connected to the side walls of the cannula body on both sides of the medication groove.
3. The endotracheal intubation for laryngeal relief anesthesia according to claim 1, characterized in that: The dosing tube is connected with a dosing tank, and the dosing valve is located at the front end of the dosing tank. The dosing tank is also connected with an air supply pipe, and an air supply valve is arranged on the air supply pipe, and the air supply valve is also located at the front end of the dosing tank.
4. The endotracheal intubation for laryngeal relief anesthesia according to claim 3, characterized in that: One end of the air supply pipeline away from the medication tank is connected with an air supply air bag.
5. The endotracheal intubation for laryngeal relief anesthesia according to claim 1, characterized in that: One end of the drug administration channel with a blocking ball is a conical structure, and the blocking ball is placed in the conical structure area of the drug administration channel.
6. The endotracheal intubation for laryngeal relief anesthesia according to claim 1, characterized in that: Three drug administration grooves are arranged circumferentially along the axis of the cannula body, and the drug administration grooves in adjacent layers are arranged at intervals.
7. The endotracheal intubation for laryngeal relief anesthesia according to claim 6, characterized in that: One end of the medication groove close to the outer side wall of the cannula body is a tapered structure.
8. The endotracheal intubation for laryngeal relief anesthesia according to claim 1, characterized in that: A fixed air bag is arranged on the outer side wall of one end of the cannula body, the fixed air bag is connected with an air supply pipe, and one end of the air supply pipe away from the fixed air bag is connected with an air supply connection assembly.
9. The endotracheal intubation for laryngeal relief anesthesia according to claim 1, characterized in that: The side wall of the cannula body is provided with scale lines, and the scale lines are arranged along the length direction of the cannula body.