Laryngeal nerve tracheal cannula

Abstract

This utility model discloses a recurrent laryngeal nerve endotracheal tube, relating to the field of endotracheal intubation technology. The tube includes a positioning balloon and an apposition balloon. The positioning balloon is fixedly disposed on one side of the insertion port of the tube, and the apposition balloon is fixedly disposed on the side of the positioning balloon away from the insertion port. A plurality of electrode wires are fixedly disposed on the apposition balloon, symmetrically disposed on both sides of the apposition balloon. The electrode wires on the apposition balloon can monitor the recurrent laryngeal nerve signal. During thyroid surgery, medical personnel can adjust the surgical position in a timely manner based on the detected signal value to avoid damage to the recurrent laryngeal nerve within the vocal cords. By fabricating the electrode wires on the apposition balloon, the apposition balloon can not only be used for positioning but also adjusted according to the individual patient's size to ensure that the balloon completely adheres to the vocal cords.

Description

Technical Field

[0001] This utility model relates to the field of endotracheal intubation technology, specifically to a recurrent laryngeal nerve endotracheal intubation. Background Technology

[0002] In existing technologies, recurrent laryngeal nerve (RLN) injury is one of the most common and serious complications after thyroid surgery. Unilateral injury can cause hoarseness and vocal weakness, while bilateral injury can lead to aphonia, respiratory distress, or even suffocation. Thyroid IONMI (Intraoperative Neuromonitoring) technology can rapidly locate the recurrent laryngeal nerve and identify anatomical variations. Particularly in complex thyroid surgeries, it can highlight risky procedures and reduce the rate of nerve injury, making it an effective adjunct to recurrent laryngeal nerve protection. This technology primarily works by stimulating the recurrent laryngeal nerve to generate an action potential in the vocal cords it controls. When the surface electrode on the endotracheal tube contacts this potential, the signal is transmitted to a monitoring device that uses electromyography and alert sounds to assist the surgeon in determining whether the recurrent laryngeal nerve has been damaged.

[0003] Current monitoring electrode wires are mainly placed on the wall of the endotracheal tube, which cannot effectively fit according to individual differences. Furthermore, endotracheal tubes using current technology for recurrent laryngeal nerve monitoring are prone to displacement. Generally, they are only used as a cuff to block the trachea, and displacement is easily caused during surgery. Utility Model Content

[0004] Purpose of the utility model: The technical problem to be solved by this utility model is to provide a recurrent laryngeal nerve endotracheal tube, which solves the problem that the existing electrode wires do not fit properly and are easy to shift.

[0005] Technical solution

[0006] To solve the above problems, the technical solution provided by this utility model is as follows:

[0007] A recurrent laryngeal nerve endotracheal tube includes a tube, on which a positioning balloon and an abutment balloon are fixedly mounted. The positioning balloon is fixedly mounted on one side of the insertion port of the tube, and the abutment balloon is fixedly mounted on the side of the positioning balloon away from the insertion port. A plurality of electrode wires are fixedly mounted on the abutment balloon, and the electrode wires are symmetrically fixed on both sides of the abutment balloon.

[0008] Furthermore, the intubation tube includes a ventilation conduit and several functional conduits arranged around the ventilation conduit and located within the side wall of the intubation tube.

[0009] Furthermore, a temperature sensor is provided at the insertion port of the cannula, or the temperature sensor is provided protruding from the side wall of the positioning balloon near the insertion port of the cannula.

[0010] Furthermore, a pressure sensor is installed inside the positioning balloon.

[0011] Furthermore, the pressure sensor and the temperature sensor share a transmission line, which is connected to a voltage regulator sensor socket.

[0012] Furthermore, the electrode wire is connected to an electrode wire socket.

[0013] Furthermore, the cannula is also equipped with a camera module, which is located on the side of the fitting balloon away from the positioning balloon, and the camera module is connected to a camera module socket.

[0014] Furthermore, the cannula is fixedly provided with a lip on the side away from the insertion end port.

[0015] Furthermore, the positioning balloon and the fitting balloon are respectively connected to a positioning balloon valve and a fitting balloon valve.

[0016] Furthermore, the electrode wire is arranged along the length of the insertion tube.

[0017] Beneficial effects

[0018] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0019] The electrode wires attached to the balloon can monitor the recurrent laryngeal nerve signal. During thyroid surgery, medical staff can adjust the surgical position in a timely manner based on the detected signal values ​​to avoid damage to the recurrent laryngeal nerve within the vocal cords. By fabricating the electrode wires onto the balloon, it can not only be used for positioning but also adjusted according to the patient's individual size to ensure the balloon completely conforms to the vocal cords. Real-time monitoring by a camera module allows for observation of the electrode wires and balloon's operational status at any time, enabling prompt action on any abnormalities. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0021] Figure 2 This is an enlarged schematic diagram of the insertion end structure of the cannula in Embodiment 1 of this utility model;

[0022] Figure 3 This is an enlarged schematic diagram of the fitting balloon in Embodiment 1 of this utility model;

[0023] Figure 4 This is an enlarged schematic diagram of the cannula cross-section of Embodiment 1 of this utility model;

[0024] Figure 5 This is an enlarged schematic diagram of the camera module according to Embodiment 1 of this utility model;

[0025] Figure 6This is an enlarged schematic diagram of one angle of the lead-out socket of Embodiment 1 of this utility model;

[0026] Figure 7 This is an enlarged schematic diagram of the lead-out socket of Embodiment 1 of this utility model from another angle;

[0027] Figure 8 This is a schematic diagram of the pressure sensor in Embodiment 1 of this utility model;

[0028] 1. Intubation; 2. Positioning balloon; 3. Fitting balloon; 4. Ventilation tubing;

[0029] 5. Electrode wire; 6. Temperature sensor; 7. Pressure sensor; 8. Camera module;

[0030] 9. Lip edge; 10. Positioning balloon valve; 11. Fitting balloon valve; 12. Camera module socket;

[0031] 13. Voltage regulator sensor socket; 14. Electrode wire socket; Detailed Implementation

[0032] To make the technical solution of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] Example 1

[0034] Combined with appendix Figure 1-8 A recurrent laryngeal nerve endotracheal tube 1 includes a tube 1, a positioning balloon 2 and an abutment balloon 3 on the tube 1. The positioning balloon 2 is located on the side of the tube 1 inserted into the patient's body. The end of the tube 1 inserted into the patient's body has a beveled structure. The insertion end of the tube 1 has a rounded corner with the side wall of the tube 1. When the tube 1 enters the patient's trachea, it avoids damage to the patient's tracheal tissue from the sharp end. The beveled structure of the insertion end of the tube 1 makes it easier for the tube 1 to enter the patient's trachea.

[0035] The intubation tube 1 has a Murphy orifice on one side of the insertion end. The Murphy orifice prevents complete airway obstruction. If the tip of the intubation tube 1 accidentally adheres to the tracheal wall and causes blockage, the Murphy orifice serves as a backup ventilation channel to prevent patient suffocation. It also assists in clearing secretions, aiding in the drainage of subglottic secretions and reducing the risk of pulmonary infection. Furthermore, it enhances the safety of the intubation tube 1, providing additional ventilation in case of tube displacement or abnormal cuff inflation.

[0036] The endotracheal tube 1 has an internal ventilation tube 4 that serves as the main conduit. The ventilation tube 4 is used to supply air to the patient after the endotracheal tube 1 is inserted into the patient's trachea. The side wall of the endotracheal tube 1 is provided with several functional tubes that surround the ventilation tube 4. The functional tubes are used to supply air or provide wiring to the relevant functional components installed on the endotracheal tube 1.

[0037] The positioning balloon 2 on the intubation tube 1 is fixedly positioned on the side of the intubation tube 1 near the insertion end port. The positioning balloon 2 is used to inflate the positioning balloon 2 after the intubation tube 1 enters the patient's trachea. After the positioning balloon 2 inflates, it fills the patient's trachea, making the positioning balloon completely fit the airway. This prevents oxygen from leaking out of the oxygen device and ensures that the oxygen is completely delivered to the lungs. At the same time, this fixes the intubation tube 1 in the patient's trachea and seals the patient's trachea. The Murphy orifice on the intubation tube 1 is closer to the insertion end port of the intubation tube 1 than the positioning balloon 2, thus ensuring the normal function of the Murphy orifice.

[0038] The intubation tube 1 contains several functional tubes, including an air supply tube connected to the positioning balloon 2. The positioning balloon 2 has an opening at its fixed position on the intubation tube 1. The air supply tube of the positioning balloon 2 is connected to the positioning balloon 2 through the opening. Gas is supplied to and depressed through the air supply tube and the opening inside the positioning balloon 2, thereby realizing the switching between the expansion and contraction states of the positioning balloon 2.

[0039] A fitting balloon 3 is fixedly installed on the side of the intubation tube 1 that is furthest from the insertion port of the positioning balloon 2. An electrode wire 5 is fixedly installed on the fitting balloon 3. The fitting balloon 3 expands to fit the electrode wire 5 against the vocal cords of the patient's trachea. The intubation tube 1 also has an air supply channel for supplying air to the fitting balloon 3. The intubation tube 1 has an opening at the location of the fitting balloon 3 that connects the fitting balloon 3 to the air supply channel. The air supply channel of the fitting balloon 3 supplies air to and deflates the fitting balloon 3 through the opening, thereby realizing the switching between the expansion and contraction states of the fitting balloon 3.

[0040] Electrode wires 5 are fixedly disposed on both sides of the fitting balloon 3. Electrode wires 5 are fixed to the fitting balloon 3 by adhesive. Electrode wires 5 are fixed to the fitting balloon 3 by unilateral fixation. Preferably, the electrode wires 5 are fixed on the side closer to the insertion end of the intubation tube 1, so as to prevent the electrode wires 5 from tilting up and causing damage to the patient's trachea when the intubation tube 1 is inserted into the trachea. The unilateral fixation of the electrode wires 5 allows the fitting balloon 3 to expand smoothly, and after the fitting balloon 3 expands, it squeezes the electrode wires 5 to make them adhere to the tracheal wall.

[0041] The electrode wires 5 located on both sides of the endotracheal tube 1 (BTU 3) are symmetrically distributed. Several electrode wires 5 are fixed on each side of the BTU 1, preferably two arranged side-by-side to balance effectiveness and cost. The electrode wires 5 are arranged along the length of the endotracheal tube 1. The electrode wires 5 are used to collect recurrent laryngeal nerve signals. The electrode wires 5 are deformable and adhere to the BTU 1. The electrode wires 5 are very flexible, with a diameter of 0.05~0.5mm, and can completely adhere to the vocal cord wall as the BTU 1 expands and contracts. The distance between electrode wires 5 on the same side is 0~10mm. The BTU 1 also serves as a positioning device. After inflation, the BTU 1 completely adheres to the vocal cords, preventing easy movement of the endotracheal tube 1 and the electrode wires 5 on the BTU 1. After the electrode wires 5 adhere to the vocal cords, they collect recurrent laryngeal nerve signals.

[0042] The distance between the positioning balloon 2 and the port of the cannula 1 is 30~50mm, and the distance between the fitting balloon 3 and the positioning balloon 2 is 20~50mm. The position of the positioning balloon 2 is set according to the distance between the positioning balloon 2 and the port of the cannula 1, and the position of the fitting balloon 3 is set according to the position of the positioning balloon 2. This makes the produced cannula more in line with human anatomy. The range of values ​​can also be used to distinguish between adult and pediatric cannulas, or to set different sizes of cannulas, expanding the size options available to medical staff and making patient cooperation more accurate when using the cannula.

[0043] The endotracheal tube 1 also contains a temperature sensor 6. The temperature sensor 6 is fixedly mounted on the beveled port of the insertion end of the endotracheal tube 1, or it can be positioned on the side of the endotracheal tube 1 near the insertion end port. The temperature sensor 6 protrudes directly from the side wall of the endotracheal tube 1, making it closer to the insertion end port than the positioning balloon 2. By directly positioning the temperature sensor 6 at the port, it can detect the temperature inside the trachea in real time after the endotracheal tube 1 enters the patient's trachea, providing data on the patient's physical characteristics. Since it detects internal body temperature, it is not affected by the external operating room air conditioning, providing important information for doctors to manage patient temperature effectively. Among the several functional conduits within the endotracheal tube 1 is a conduit for the wiring of the temperature sensor 6, facilitating accurate and rapid transmission of the detected data.

[0044] The positioning balloon 2 is equipped with a pressure sensor 7, which is attached to the inner wall of the balloon, thus positioning the pressure sensor 7 between the endotracheal tube 1 and the positioning balloon 2. When the reaction force of the trachea squeezes the balloon, the pressure sensor 7 can directly detect the pressure on the balloon. The pressure sensor 7 can monitor the balloon pressure in real time and the pressure of the balloon wall on the human body. The normal pressure is 20~30 mmHg. In the past, inflation was based on the doctor's experience, which could easily cause airway damage. At the same time, the pressure sensor 7 can also use the pressure of the positioning balloon 2 to let medical staff know whether there is any leakage in the positioning balloon 2 during the operation, and remind the doctor to perform inflation operations in time.

[0045] Temperature sensor 6 and pressure sensor 7 can be directly soldered onto a single sensing wire. The sensing wire is located inside the sensing wire conduit within the functional conduit. The temperature sensor is positioned at the front end of cannula 1, and pressure sensor 7 is located 3-80 mm away from temperature sensor 6. The diameter of the entire sensor wire does not exceed 0.2 mm. Temperature sensor 6 and pressure sensor 7 are directly connected to the sensing wire within the wiring channel, and then connected to an external host unit via sensor sockets for display, providing temperature and pressure information to the doctor.

[0046] A camera module 8 is also installed on the cannula 1. The camera module 8 is located on the side of the cannula 1 where the balloon 3 is attached, away from the insertion port. The functional pipes on the cannula 1 also have camera wiring pipes for the camera module 8. The transmission line of the camera module 8 is connected to an external monitor through the camera wiring pipes, allowing medical staff to observe the operation of the balloon 3 and the positioning balloon 2 through the camera. The camera module 8 is located on the side of the balloon 3, allowing direct observation of the operation of both the positioning balloon 2 and the balloon 3. When the balloon 3 is not inflated, the camera can look over the balloon 3 to observe the positioning balloon 2. The camera is mainly used to observe the adhesion between the electrode wire 5 on the balloon 3 and the vocal cords.

[0047] The endotracheal tube 1 has a lip 9 fixed on the side away from the insertion end. The endotracheal tube 1 located on the side away from the insertion end port of the lip 9 is used to connect to an external air supply device. The air supply device is used to supply air to the ventilation pipe 4 of the endotracheal tube 1, and the gas in the ventilation pipe 4 supplies air to the patient.

[0048] The ports of several functional channels on the insertion tube are located on the side of the lip 9 near the insertion end. The air supply channels for the positioning balloon 2 and the fitting balloon 3 are respectively led out by the ports to the positioning balloon valve 10 and the fitting balloon valve 11. The positioning balloon valve 10 and the fitting balloon valve 11 are used to control the inflation and deflation of the positioning balloon 2 and the fitting balloon, respectively. Four electrode wires 5 are respectively provided with electrode wire routing channels on the insertion tube 1. Electrode wire transmission lines are installed inside the electrode wire routing channels. Electrode wire sockets 14 are led out from the ports of the electrode wires 5, facilitating the external setting of identification devices to recognize the recurrent laryngeal nerve signals transmitted by the electrode wires 5. The camera routing channel of the camera module 8 has a camera module socket 12 led out from the port, facilitating connection to an external display to display the camera's captured images.

[0049] The sensor's sensing cable has a voltage regulator sensor socket 13 at its port. External devices connected to the voltage regulator sensor socket 13 can directly display the temperature and pressure inside the trachea, allowing medical staff to monitor the patient's trachea and intubation tube 1 in a timely manner. The sockets for each functional component are easy to plug in and disconnect, facilitating quick and easy operation for medical staff.

[0050] The electrode wire attached to the balloon can monitor the recurrent laryngeal nerve signal. During thyroid surgery, medical staff can adjust the surgical position in a timely manner based on the detected signal value to avoid damaging the recurrent laryngeal nerve in the vocal cords, which could cause postoperative hoarseness or even permanent damage such as impaired voice.

[0051] The electrode wires in existing technology are prone to displacement, and the inability of the electrode wires to adhere effectively causes signal discontinuity and inaccuracy, which has always been a common problem with such products. By making the electrode wires onto the fitting balloon, the fitting balloon can not only be used for positioning, but also be adjusted according to the individual size of the patient to ensure that the balloon completely adheres to the vocal cords.

[0052] The camera module's real-time monitoring allows for observation of the electrode wires and balloon's working status at any time, enabling timely handling of any abnormalities. In the past, the cause of signal abnormalities was unknown, leading to blind rotation of the endotracheal tube or re-intubation to sense the signal, which could damage the trachea and waste surgical time.

[0053] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A recurrent laryngeal nerve tracheal cannula, characterized by, The device includes an insertion cannula, on which a positioning balloon and an abutment balloon are fixedly mounted. The positioning balloon is fixedly mounted on one side of the insertion end port of the insertion cannula, and the abutment balloon is fixedly mounted on the side of the positioning balloon away from the insertion end port of the insertion cannula. A plurality of electrode wires are fixedly mounted on the abutment balloon, and the electrode wires are symmetrically fixed on both sides of the abutment balloon.

2. The recurrent laryngeal nerve tracheal cannula according to claim 1, wherein, The intubation tube includes a ventilation conduit and several functional conduits arranged around the ventilation conduit and located within the side wall of the intubation tube.

3. The recurrent laryngeal nerve tracheal cannula according to claim 1, wherein, A temperature sensor is provided at the insertion port of the cannula, or the temperature sensor is provided on the side wall of the positioning balloon near the insertion port of the cannula.

4. The recurrent laryngeal nerve tracheal cannula according to claim 3, wherein, The positioning balloon is equipped with a pressure sensor.

5. A recurrent laryngeal nerve tracheal cannula according to claim 4, wherein, The pressure sensor and the temperature sensor share a transmission line, which is connected to a voltage regulator sensor socket.

6. The recurrent laryngeal nerve tracheal cannula according to claim 1, wherein, The electrode wire is connected to an electrode wire socket.

7. The recurrent laryngeal nerve tracheal cannula according to claim 2, wherein, The cannula is also equipped with a camera module, which is located on the side of the fitting balloon away from the positioning balloon, and the camera module is connected to a camera module socket.

8. A recurrent laryngeal nerve tracheal cannula according to claim 7, wherein, The cannula has a lip fixed on the side away from the insertion end port.

9. The recurrent laryngeal nerve tracheal cannula according to claim 1, wherein, The positioning balloon and the fitting balloon are respectively connected to a positioning balloon valve and a fitting balloon valve.

10. A recurrent laryngeal nerve endotracheal intubation method according to claim 1, characterized in that, The electrode wire is arranged along the length of the insertion tube.

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