Method and device for assisting oral tracheal intubation based on sound wave signals

Abstract

The invention discloses a method and a device for assisting oral tracheal intubation based on sound wave signals, which can further improve the success rate of oral tracheal intubation and confirm whether intubation succeeds or not in real time. The method comprises the following steps: (1) placing a guide wire into a tracheal catheter, penetrating one end of the tracheal catheter through a small hole of a plastic interface, and inserting a sound wave receiver into a large hole of the plastic interface; (2) a loudspeaker connected with a sound wave signal generator is turned on and placed on the throat of the patient, and a specific sound wave signal sent by the sound wave signal generator is transmitted to the airway and vocal cord of the patient through the surrounding cartilage vibration of the patient; (3) the sound wave receiver obtains a signal through the other end of the tracheal catheter; (4) the signal processing unit performs filtering and analog-to-digital conversion on the signal, and compares the signal with the signal at the previous moment in real time; (5) the display receives the comparison result of the step (4) and displays the result; and (6) if the comparison result is that the current moment signal is greater than or equal to the previous moment signal, determining that the tracheal catheter intubation is accurate, otherwise, determining that the intubation is wrong.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a method for assisting oral endotracheal intubation based on acoustic wave signals, and a device for assisting oral endotracheal intubation based on acoustic wave signals. Background Art

[0002] Oral endotracheal intubation is a common operation during surgery. In clinical work, there are difficult airway cases, which can make endotracheal intubation difficult or even fail. The success of endotracheal intubation is directly related to the patient's life, so there is no room for error.

[0003] At present, when facing the need for tracheal intubation of difficult airways, clinical use of visual laryngoscopes to assist in tracheal intubation has improved the success rate of tracheal intubation to a certain extent, but there is still a failure rate of about 10%. After entering the throat, the glottis will be partially blocked, and it is impossible to visually confirm whether the intubation is successful. Subsequent monitoring of CO2 is required to confirm whether the trachea has entered the airway.

[0004] Therefore, how to further improve the success rate of oral endotracheal intubation and confirm in real time whether the intubation is successful has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0005] In order to overcome the defects of the prior art, the technical problem to be solved by the present invention is to provide a method for assisting oral endotracheal intubation based on acoustic wave signals, which can further improve the success rate of oral endotracheal intubation and can confirm in real time whether the intubation is successful.

[0006] The technical solution of the present invention is: a method for assisting oral tracheal intubation based on acoustic wave signals, which comprises the following steps:

[0007] (1) inserting the guide wire into the endotracheal tube, then passing one end of the endotracheal tube through the small hole of the plastic interface, and inserting the sound wave receiver into the large hole of the plastic interface;

[0008] (2) Turn on the speaker connected to the sound wave signal generator and place it on the patient's throat. The specific sound wave signal emitted by the sound wave signal generator is transmitted to the patient's airway and vocal cords through the vibration of the patient's cricoid cartilage;

[0009] (3) The sound wave receiver obtains a specific sound wave signal through the other end of the endotracheal tube which is inserted into the patient's oral cavity;

[0010] (4) the signal processing unit filters and performs analog-to-digital conversion on the specific sound wave signal obtained in step (3), and compares it with the signal at the previous moment in real time;

[0011] (5) The display receives the comparison result of step (4) and displays the result;

[0012] (6) If the comparison result is that the signal at the current moment is greater than or equal to the signal at the previous moment, the endotracheal tube intubation is accurate; otherwise, the intubation is incorrect.

[0013] The present invention uses a specific sound wave signal emitted by a sound wave signal generator. The speaker is turned on and placed in the patient's larynx. The specific sound wave signal is transmitted to the patient's airway and the patient's vocal cords through the vibration of the patient's cricoid cartilage. When the endotracheal tube is intubated accurately, the signal obtained by the sound wave receiver is greater than or equal to the signal at the previous moment, otherwise it is an intubation error. In this way, the operator can confirm in real time whether the intubation is successful, which can further improve the success rate of oral endotracheal intubation.

[0014] A device for assisting oral tracheal intubation based on acoustic wave signals is also provided, comprising:

[0015] Display screen, plastic interface, speaker, guidewire, endotracheal tube, acoustic signal generator, acoustic receiver, signal processing unit;

[0016] The sound wave signal generator emits a specific sound wave signal, and the speaker is placed in the patient's larynx. The specific sound wave signal emitted by the sound wave signal generator causes the patient's cricoid cartilage to vibrate through the speaker, thereby being transmitted to the patient's airway and vocal cords;

[0017] The plastic interface has two through holes, namely a large hole and a small hole. The guide wire is placed in the tracheal tube, one end of the tracheal tube is passed through the small hole of the plastic interface, and the sound wave receiver is inserted into the large hole of the plastic interface.

[0018] When the endotracheal tube passes through the glottis of the patient, a specific sound wave signal is obtained by the sound wave receiver through the endotracheal tube, and the signal processing unit filters and performs analog-to-digital conversion on the obtained specific sound wave signal, and compares it with the signal at the previous moment in real time;

[0019] The display receives the comparison result from the signal processing unit and displays the result.

[0020] Another device for assisting oral tracheal intubation based on acoustic wave signals is also provided, comprising:

[0021] Display screen, plastic interface, speaker, guidewire, endotracheal tube, acoustic signal generator, acoustic receiver, signal processing unit;

[0022] The plastic interface has two through holes, namely a large hole and a small hole. The guide wire is placed in the tracheal tube, one end of the tracheal tube is passed through the small hole of the plastic interface, the sound wave signal generator sends a specific sound wave signal, and the sound wave signal generator and the speaker are inserted into the large hole of the plastic interface;

[0023] When the endotracheal tube passes through the glottis of the patient, a specific sound wave signal passes through the airway and vocal cords to vibrate the patient's cricoid cartilage. The sound wave receiver is placed in the patient's larynx to receive the specific sound wave signal. The signal processing unit filters and performs analog-to-digital conversion on the obtained specific sound wave signal, and compares it with the signal at the previous moment in real time;

[0024] The display receives the comparison result from the signal processing unit and displays the result. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A flow chart of a method for assisting oral tracheal intubation based on acoustic wave signals according to the present invention is shown.

[0026] Figure 2 A schematic structural diagram of a device for assisting oral tracheal intubation based on acoustic wave signals according to the present invention is shown.

[0027] Figure 3 Shows Figure 2 The signal flow diagram of the device.

[0028] Figure 4 A signal flow diagram of another device for assisting oral tracheal intubation based on acoustic wave signals according to the present invention is shown. DETAILED DESCRIPTION

[0029] like Figure 1 As shown, a method for assisting oral tracheal intubation based on acoustic wave signals comprises the following steps:

[0030] (1) inserting the guide wire into the endotracheal tube, then passing one end of the endotracheal tube through the small hole of the plastic interface, and inserting the sound wave receiver into the large hole of the plastic interface;

[0031] (2) Turn on the speaker connected to the sound wave signal generator and place it on the patient's throat. The specific sound wave signal emitted by the sound wave signal generator is transmitted to the patient's airway and vocal cords through the vibration of the patient's cricoid cartilage;

[0032] (3) The sound wave receiver obtains a specific sound wave signal through the other end of the endotracheal tube which is inserted into the patient's oral cavity;

[0033] (4) the signal processing unit filters and performs analog-to-digital conversion on the specific sound wave signal obtained in step (3), and compares it with the signal at the previous moment in real time;

[0034] (5) The display receives the comparison result of step (4) and displays the result;

[0035] (6) If the comparison result is that the signal at the current moment is greater than or equal to the signal at the previous moment, the endotracheal tube intubation is accurate; otherwise, the intubation is incorrect.

[0036] The present invention uses a specific sound wave signal emitted by a sound wave signal generator. The speaker is turned on and placed in the patient's larynx. The specific sound wave signal is transmitted to the patient's airway and the patient's vocal cords through the vibration of the patient's cricoid cartilage. When the endotracheal tube is intubated accurately, the signal obtained by the sound wave receiver is greater than or equal to the signal at the previous moment, otherwise it is an intubation error. In this way, the operator can confirm in real time whether the intubation is successful, which can further improve the success rate of oral endotracheal intubation.

[0037] Preferably, in step (2), the specific sound wave signal is a sound that is different from ambient noise.

[0038] Preferably, in step (2), the specific sound wave signal is a signal generated by the superposition of two sound waves.

[0039] Preferably, in step (2), the frequency of the specific sound wave signal is 20 Hz to 20000 Hz.

[0040] Preferably, in step (2), the specific sound wave signal is obtained by adjusting the frequency and amplitude of the sound wave signal generator.

[0041] Preferably, the method further comprises step (7), removing the sound wave receiver, removing the plastic interface, pulling the guide wire out of the endotracheal tube, and connecting one end of the endotracheal tube to a ventilator.

[0042] like Figure 2 , 3 As shown, a device for assisting oral tracheal intubation based on acoustic wave signals is also provided, which comprises:

[0043] Display screen 1, plastic interface 2, speaker 3, guide wire 4, endotracheal tube 5, sound wave signal generator, sound wave receiver 6, signal processing unit;

[0044] The sound wave signal generator emits a specific sound wave signal, and the speaker is placed in the patient's larynx. The specific sound wave signal emitted by the sound wave signal generator causes the patient's cricoid cartilage to vibrate through the speaker, thereby being transmitted to the patient's airway and vocal cords;

[0045] The plastic interface has two through holes, namely a large hole and a small hole. The guide wire is placed in the tracheal tube, one end of the tracheal tube is passed through the small hole of the plastic interface, and the sound wave receiver is inserted into the large hole of the plastic interface.

[0046] When the endotracheal tube passes through the glottis of the patient, a specific sound wave signal is obtained by the sound wave receiver through the endotracheal tube, and the signal processing unit filters and performs analog-to-digital conversion on the obtained specific sound wave signal, and compares it with the signal at the previous moment in real time;

[0047] The display receives the comparison result from the signal processing unit and displays the result.

[0048] A second device for assisting oral tracheal intubation based on acoustic wave signals is also provided, comprising:

[0049] Display screen, plastic interface, speaker, guidewire, endotracheal tube, acoustic signal generator, acoustic receiver, signal processing unit;

[0050] The plastic interface has two through holes, namely a large hole and a small hole. The guide wire is placed in the tracheal tube, one end of the tracheal tube is passed through the small hole of the plastic interface, the sound wave signal generator sends a specific sound wave signal, and the sound wave signal generator and the speaker are inserted into the large hole of the plastic interface;

[0051] When the endotracheal tube passes through the glottis of the patient, a specific sound wave signal passes through the airway and vocal cords to vibrate the patient's cricoid cartilage. The sound wave receiver is placed in the patient's larynx to receive the specific sound wave signal. The signal processing unit filters and performs analog-to-digital conversion on the obtained specific sound wave signal, and compares it with the signal at the previous moment in real time;

[0052] The display receives the comparison result from the signal processing unit and displays the result.

[0053] Figure 4 The signal flow diagram of another device based on acoustic wave signals to assist oral tracheal intubation of the present invention is shown. This device places the acoustic wave signal generator on the oral side of the patient and the acoustic wave receiver on the throat of the patient, so the signal flow diagram is similar to Figure 3 are different.

[0054] Preferably, if Figure 3 As shown, power amplifiers are respectively arranged between the signal generator and the loudspeaker and after the sound wave receiver to amplify the specific sound wave signal.

[0055] Preferably, the signal processing unit includes a filter, an analog-to-digital conversion module, and a comparator. The filter eliminates environmental noise, the analog-to-digital conversion module converts analog signals into digital signals, and the comparator compares the signal at a current moment with the signal at a previous moment.

[0056] Preferably, the sound wave receiver includes a Bluetooth module, and the display includes a Bluetooth module, a signal processing unit and a display screen. After the two Bluetooth modules are paired, the signal is received by the signal processing unit, and the display screen displays the comparison result of the signal processing unit.

[0057] The method and device of the present invention cleverly use sound waves to propagate through the patient's airway, glottis, and tracheal tube to confirm whether the intubation is successful. This is not a technical solution that ordinary technicians in the field of intubation technology can easily think of, but it is obtained by the inventor through long-term clinical practice and thinking, and continuous experiments. Compared with the combination of laryngoscope, the operation is simpler, the intubation accuracy is higher, and the laryngoscope is avoided. The insertion of the patient's body; compared with the subsequent monitoring of CO2 to confirm whether the trachea has entered the airway, it can confirm in real time whether the intubation is successful.

[0058] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. A method for assisting oral tracheal intubation based on acoustic wave signals, characterized in that: It includes the following steps: (1) inserting the guide wire into the endotracheal tube, then passing one end of the endotracheal tube through the small hole of the plastic interface, and inserting the sound wave receiver into the large hole of the plastic interface; (2) Turn on the speaker connected to the sound wave signal generator and place it on the patient's throat. The specific sound wave signal emitted by the sound wave signal generator is transmitted to the patient's airway and vocal cords through the vibration of the patient's cricoid cartilage; (3) The sound wave receiver obtains a specific sound wave signal through the other end of the endotracheal tube which is inserted into the patient's oral cavity; (4) the signal processing unit filters and performs analog-to-digital conversion on the specific sound wave signal obtained in step (3), and compares it with the signal at the previous moment in real time; (5) The display receives the comparison result of step (4) and displays the result; (6) If the comparison result is that the signal at the current moment is greater than or equal to the signal at the previous moment, the endotracheal tube intubation is accurate; otherwise, the intubation is incorrect.

2. The method for assisting oral tracheal intubation based on acoustic wave signals according to claim 1, characterized in that: In the step (2), the specific sound wave signal is a sound that is different from the ambient noise.

3. The method for assisting oral tracheal intubation based on acoustic wave signals according to claim 1, characterized in that: In the step (2), the specific sound wave signal is a signal generated by the superposition of two sound waves.

4. The method for assisting oral tracheal intubation based on acoustic wave signals according to any one of claims 1 to 3, characterized in that: In the step (2), the frequency of the specific sound wave signal is 20 Hz to 20000 Hz.

5. The method for assisting oral tracheal intubation based on acoustic wave signals according to claim 1, characterized in that: In the step (2), a specific sound wave signal is obtained by adjusting the frequency and amplitude of the sound wave signal generator.

6. The method for assisting oral tracheal intubation based on acoustic wave signals according to claim 1, characterized in that: The method also includes step (7), removing the sound wave receiver, removing the plastic interface, pulling the guide wire out of the endotracheal tube, and connecting one end of the endotracheal tube to the ventilator.

7. A device for assisting oral tracheal intubation based on acoustic signals, characterized in that: It includes: Display screen (1), plastic interface (2), speaker (3), guide wire (4), endotracheal tube (5), sound wave signal generator, sound wave receiver (6), signal processing unit; The sound wave signal generator emits a specific sound wave signal, and the speaker is placed in the patient's larynx. The specific sound wave signal emitted by the sound wave signal generator causes the patient's cricoid cartilage to vibrate through the speaker, thereby being transmitted to the patient's airway and vocal cords; The plastic interface has two through holes, namely a large hole and a small hole. The guide wire is placed in the tracheal tube, one end of the tracheal tube is passed through the small hole of the plastic interface, and the sound wave receiver is inserted into the large hole of the plastic interface. When the endotracheal tube passes through the glottis of the patient, a specific sound wave signal is obtained by the sound wave receiver through the endotracheal tube, and the signal processing unit filters and performs analog-to-digital conversion on the obtained specific sound wave signal, and compares it with the signal at the previous moment in real time; The display receives the comparison result from the signal processing unit and displays the result.

8. A device for assisting oral tracheal intubation based on acoustic wave signals, characterized in that: It includes: Display screen, plastic interface, speaker, guidewire, endotracheal tube, acoustic signal generator, acoustic receiver, signal processing unit; The plastic interface has two through holes, namely a large hole and a small hole. The guide wire is placed in the tracheal tube, one end of the tracheal tube is passed through the small hole of the plastic interface, the sound wave signal generator sends a specific sound wave signal, and the sound wave signal generator and the speaker are inserted into the large hole of the plastic interface; When the endotracheal tube passes through the glottis of the patient, a specific sound wave signal passes through the airway and vocal cords to vibrate the patient's cricoid cartilage. The sound wave receiver is placed in the patient's larynx to receive the specific sound wave signal. The signal processing unit filters and performs analog-to-digital conversion on the obtained specific sound wave signal, and compares it with the signal at the previous moment in real time; The display receives the comparison result from the signal processing unit and displays the result.

9. The device for assisting oral tracheal intubation based on acoustic wave signals according to claim 7 or 8, characterized in that: A power amplifier is arranged between the signal generator and the loudspeaker and after the sound wave receiver to amplify the specific sound wave signal.

10. The device for assisting oral tracheal intubation based on acoustic wave signals according to claim 9, characterized in that: The signal processing unit includes a filter, an analog-to-digital conversion module, and a comparator. The filter eliminates environmental noise, the analog-to-digital conversion module converts analog signals into digital signals, and the comparator compares the signal at a current moment with the signal at a previous moment.

11. The device for assisting oral tracheal intubation based on acoustic wave signals according to claim 7 or 8, characterized in that: The sound wave receiver includes a Bluetooth module, and the display includes a Bluetooth module, a signal processing unit and a display screen. After the two Bluetooth modules are paired, the signal is received by the signal processing unit, and the display screen displays the comparison result of the signal processing unit.

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