Nasal catheter device with monitoring function

Abstract

The invention discloses a nasal catheter device with a monitoring function, and relates to the field of medical treatment, and the nasal catheter device comprises an optical fiber acoustic sensing element which is used for converting vibration and / or pressure fluctuation of breathing sound waves of a patient into optical signals; the electronic module is used for receiving an optical signal from the optical fiber acoustic sensing element and converting the optical signal into an electric signal for respiration monitoring, and the electronic module is used for giving an alarm when respiration sound waves reach a preset condition and sending monitoring data to a mobile terminal. Therefore, according to the nasal catheter device with the monitoring function, the nasal catheter body, the optical fiber acoustic sensing element and the electronic module are integrated, the nasal catheter device can have the independent respiration monitoring function and the early warning function, the structure is simple, use is convenient, accuracy and reliability are achieved, meanwhile, the safety and the intelligent level of the oxygen therapy process can be remarkably improved, and the practicability is high. And compared with external monitoring equipment, the cost is low, and the workload of medical staff can be reduced.

Description

Technical Field

[0001] This invention relates to the medical field, and in particular to a nasal cannula device with monitoring function. Background Technology

[0002] In related technologies, real-time monitoring of patients' respiratory status during oxygen therapy is crucial, especially for the elderly, those with respiratory insufficiency, or those at risk of sleep apnea. If a patient's breathing slows down or stops, failure to detect it in time can lead to serious consequences. However, existing nasal cannula devices only provide oxygen and do not have continuous monitoring capabilities. They often require external monitoring equipment to achieve real-time monitoring of patients' respiratory status, which significantly increases medical costs. Alternatively, respiratory monitoring can be achieved through regular manual checks by medical staff, increasing their workload and potentially causing them to miss critical warning moments due to the inability to monitor in real time. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one object of the present invention is to provide a nasal cannula device with monitoring function, which has independent respiratory monitoring and early warning functions, and is simple in structure and safe and reliable.

[0004] The nasal cannula device with monitoring function according to the present invention includes: a nasal cannula body, a fiber optic acoustic sensing element, and an electronic module. The nasal cannula body includes: two nasal forks and an oxygen supply line. Both nasal forks are connected to the oxygen supply line, which is adapted to be connected to an oxygen source. At least a portion of the fiber optic acoustic sensing element is embedded in the wall of at least one of the nasal forks. The fiber optic acoustic sensing element is used to convert the vibration and / or pressure fluctuations of the patient's respiratory sound waves into optical signals. The electronic module is connected to the fiber optic acoustic sensing element and is used to receive the optical signals from the fiber optic acoustic sensing element and convert the optical signals into electrical signals for respiratory monitoring. The electronic module is used to issue an alarm when the respiratory sound waves reach a preset condition and to send monitoring data to a mobile terminal.

[0005] According to the nasal cannula device with monitoring function of the present invention, the nasal cannula device with monitoring function of the present application integrates the nasal cannula body, fiber optic acoustic sensing element and electronic module, which enables the nasal cannula device to have independent respiratory monitoring function and early warning function. It has a simple structure, is easy to use, and is accurate and reliable. At the same time, it can significantly improve the safety and intelligence level of the oxygen therapy process. Moreover, it is lower in cost than external monitoring equipment and can reduce the workload of medical staff.

[0006] In some examples of the present invention, the electronic module includes: a data processing unit, an alarm unit, and a communication unit. The data processing unit is used to receive the optical signal from the fiber optic acoustic sensing element and to convert the optical signal into an electrical signal for respiratory monitoring. The data processing unit is connected to both the alarm unit and the communication unit. The data processing unit is used to control the alarm unit to issue an alarm when the respiratory sound wave reaches the preset condition and to control the communication unit to send the monitoring data to the mobile terminal.

[0007] In some examples of the present invention, the data processing unit includes: a light source, a photodetector, an analog-to-digital converter circuit, and a microprocessor. The light source is used to couple light into the fiber optic acoustic sensing element. The photodetector is used to receive the optical signal fed back by the fiber optic acoustic sensing element under the action of the respiratory sound wave and convert the optical signal into an electrical signal. The analog-to-digital converter circuit is connected to both the photodetector and the microprocessor. The analog-to-digital converter circuit is used to convert the electrical signal into an analog signal and send it to the microprocessor for the microprocessor to perform the respiratory monitoring.

[0008] In some examples of the present invention, the preset conditions include at least one of the following: respiratory cycle greater than a first preset value, respiratory rate lower than a second preset value, apnea time greater than a third preset value, respiratory intensity greater than a fourth preset value or less than a fifth preset value, and the difference between the maximum and minimum respiratory rates within a preset time being greater than a sixth preset value, wherein the fifth preset value is less than the fourth preset value.

[0009] In some examples of the present invention, the nasal cannula device with monitoring function further includes: a blood oxygen saturation sensor, the blood oxygen saturation sensor being embedded in the tube wall of the nasal fork, the blood oxygen saturation sensor being used to irradiate nasal tissue and receive reflected light and being connected to the data processing unit, the data processing unit being used to fuse and analyze respiratory monitoring data with blood oxygen saturation information detected by the blood oxygen saturation sensor, and to issue a composite alarm when the respiratory sound wave reaches the preset condition and is associated with the blood oxygen decrease information.

[0010] In some examples of the present invention, the nasal cannula device with monitoring function further includes: an electric oxygen valve, the electric oxygen valve being connected to the data processing unit and disposed in the oxygen supply pipeline, the data processing unit being used to control the opening degree of the electric oxygen valve according to the respiratory monitoring data and / or the blood oxygen saturation information, so as to control the oxygen supply amount of the oxygen supply pipeline.

[0011] In some examples of the present invention, the data processing unit is used to control the opening degree of the electric oxygen valve during the expiratory phase of the same respiratory cycle to be less than the opening degree of the electric oxygen valve during the inspiratory phase.

[0012] In some examples of the present invention, the electronic module further includes: a housing, an optical connector, the data processing unit, the alarm unit, and the communication unit are all disposed in the housing, the nasal cannula body forms an optical fiber interface corresponding to the optical fiber acoustic sensing element, the optical connector is connected to the optical fiber interface, and the optical connector is connected to the data processing unit.

[0013] In some examples of the present invention, the optical connector may be detachably or non-detachably coupled to the fiber optic interface; The optical connector may be detachably or non-detachably coupled to the data processing unit.

[0014] In some examples of the present invention, the electronic module further includes a power supply for supplying power to the electrical components of the electronic module; And / or, the electronic module is used to send an alarm to the mobile terminal when the breathing sound wave reaches a preset condition; And / or, the material of the nasal cannula body is medical-grade silicone and / or medical-grade plastic.

[0015] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the structure of a nasal cannula device with monitoring function according to an embodiment of the present invention; Figure 2 This is a schematic diagram illustrating the interaction between a nasal cannula device with monitoring function and a mobile terminal during use, according to an embodiment of the present invention. Figure 3 This is an architectural diagram of the fiber optic acoustic sensing element and electronic module according to an embodiment of the present invention.

[0017] Figure label: Nasal cannula device 100; Mobile terminal 200; Nasal cannula body 1; nasal fork 11; oxygen supply tubing 12; fiber optic interface 13; Fiber optic acoustic sensing element 2; Electronic module 3; data processing unit 31; light source 311; photodetector 312; analog-to-digital converter circuit 313; microprocessor 314; alarm unit 32; sound alarm 321; visual alarm 322; communication unit 33; housing 34; optical connector 35; Electric oxygen valve 4. Detailed Implementation

[0018] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0019] The following is for reference. Figures 1-3 A nasal cannula device 100 with monitoring function according to an embodiment of the present invention is described.

[0020] like Figure 1 and Figure 3 As shown, the nasal cannula device 100 with monitoring function according to an embodiment of the present invention includes: a nasal cannula body 1, a fiber optic acoustic sensing element 2, and an electronic module 3. The nasal cannula body 1 includes: two nasal forks 11 and an oxygen supply line 12. Both nasal forks 11 are connected to the oxygen supply line 12, and the oxygen supply line 12 is adapted to be connected to an oxygen source. The fiber optic acoustic sensing element 2 is embedded in the nasal cannula body 1, and at least a portion of the fiber optic acoustic sensing element 2 is embedded in the wall of at least one nasal fork 11. The fiber optic acoustic sensing element 2 is used to convert the vibration and / or pressure fluctuation of the patient's respiratory sound waves into optical signals. The electronic module 3 is connected to the fiber optic acoustic sensing element 2. The electronic module 3 is used to receive the optical signals from the fiber optic acoustic sensing element 2 and convert the optical signals into electrical signals for respiratory monitoring. The electronic module 3 is used to issue an alarm when the respiratory sound waves reach a preset condition and to send monitoring data to a mobile terminal 200.

[0021] Both nose forks 11 are connected to the oxygen supply line 12. As some embodiments of this application, the two nose forks 11 and the oxygen supply line 12 are integrally formed.

[0022] The oxygen supply line 12 is adapted to connect to an oxygen source. In some embodiments of this application, the oxygen supply line 12 connects the two nasal cannulas 11 to the oxygen source. In some embodiments of this application, one end of the oxygen supply line 12 has an interface, and this interface can be connected to the oxygen source. In some embodiments of this application, the interface can be a standard interface, that is, the interface can be constructed with the same structure as a conventional nasal cannula interface. The oxygen source can be constructed as, but is not limited to, a hospital central oxygen supply system or a portable oxygen cylinder, etc.

[0023] As some embodiments of this application, the nasal cannula body 1 can be constructed with a structure similar to that of a conventional nasal oxygen cannula. This allows for the design of the nasal cannula device 100 with monitoring function of this application while retaining the appearance of a conventional nasal oxygen cannula, reducing production costs, facilitating the direct use of the nasal cannula device 100 with monitoring function in conjunction with other devices (such as oxygen supply sources), improving versatility, and ensuring patient comfort.

[0024] It should be noted that the shape and size of the nasal cannula body 1 can be the same as those of a conventional nasal oxygen cannula. When the nasal cannula body 1 is worn, the two nasal forks 11 are inserted into the left and right nasal cavities of the patient respectively, and the oxygen supply line 12 extends from the patient's nose to behind the ear and then to the oxygen source interface, so that the patient can wear it comfortably.

[0025] As some embodiments of this application, the material of the nasal cannula body 1 can be constructed as medical-grade silicone or medical-grade plastic, which can make the nasal cannula body 1 more flexible and improve the comfort of the patient wearing it.

[0026] At least one portion of the fiber optic acoustic sensing element 2 is embedded within the wall of at least one nose fork 11. As some embodiments of this application, at least a portion of the fiber optic acoustic sensing element 2 is embedded within the wall of one nose fork 11, or at least a portion of the fiber optic acoustic sensing element 2 is embedded within the walls of both nose forks 11. As some embodiments of this application, the number of fiber optic acoustic sensing elements 2 is two, with at least two portions of the fiber optic acoustic sensing element 2 embedded within the walls of each of the two nose forks 11.

[0027] The fiber optic acoustic sensing element 2 is used to convert the vibration and / or pressure fluctuations of the patient's respiratory sound waves into optical signals. As some embodiments of this application, the fiber optic acoustic sensing element 2 is used to convert the vibration of the patient's respiratory sound waves into optical signals, or the fiber optic acoustic sensing element 2 is used to convert the pressure fluctuations of the patient's respiratory sound waves into optical signals, or the fiber optic acoustic sensing element 2 is used to convert both the vibration and pressure fluctuations of the patient's respiratory sound waves into optical signals.

[0028] As some embodiments of this application, when a patient wears a nasal cannula device 100 with monitoring function, the patient's breathing can generate subtle vibrations and / or pressure fluctuations of respiratory sound waves in the nasal cannula body 1. The fiber optic acoustic sensing element 2 can capture the subtle vibrations and / or pressure fluctuations of respiratory sound waves and convert them into corresponding optical signals.

[0029] As some embodiments of this application, the fiber optic acoustic sensing element 2 can also be used to convert the temperature change of the patient's exhaled airflow into a corresponding optical signal.

[0030] This configuration allows at least a portion of the fiber optic acoustic sensing element 2 to be positioned where vibrations and / or pressure fluctuations of the patient's respiratory sound waves are significant. This makes the fiber optic acoustic sensing element 2 sensitive and reliable when acquiring respiratory signals, improving the accuracy of signal acquisition. Furthermore, it separates the fiber optic acoustic sensing element 2 from the nasal cavity, ensuring the hygiene and safety of the patient using the nasal cannula device 100 with monitoring functions. It also reduces the risk of signal distortion caused by direct contact between the fiber optic acoustic sensing element 2 and nasal mucosal secretions, thus improving the stability and reliability of signal acquisition.

[0031] Compared to traditional electrical sensors, fiber optic acoustic sensing element 2 is more flexible, resistant to electromagnetic interference, and resistant to high humidity. When used in a high-oxygen environment, fiber optic acoustic sensing element 2 has no risk of electric sparks and is safe and reliable. Using fiber optic acoustic sensing element 2 can improve the safety and reliability of the nasal cannula device 100 with monitoring function of this application.

[0032] The electronic module 3 is connected to the fiber optic acoustic sensing element 2. As some embodiments of this application, the electronic module 3 and the fiber optic acoustic sensing element 2 can be directly connected, or the electronic module 3 and the fiber optic acoustic sensing element 2 can be indirectly connected through other components.

[0033] Electronic module 3 is used to receive optical signals from fiber optic acoustic sensing element 2 and convert the optical signals into electrical signals for respiratory monitoring. As some embodiments of this application, electronic module 3 can analyze the optical signals from fiber optic acoustic sensing element 2 and convert them into electrical signals using digital signal processing algorithms to extract relevant parameters (such as respiratory rate, respiratory intensity, etc.). Digital signal processing algorithms may include filtering, feature extraction, and pattern recognition to determine the respiratory cycle, calculate the number of breaths per minute, and detect abnormal respiratory patterns (such as prolonged absence of breathing, i.e., apnea).

[0034] Electronic module 3 is used to issue an alarm when the respiratory sound wave reaches a preset condition and to send monitoring data to mobile terminal 200. As some embodiments of this application, when the respiratory sound wave reaches the preset condition, electronic module 3 can issue an alarm via sound or light. Furthermore, electronic module 3 can send monitoring data to mobile terminal 200 (e.g., a patient's or family member's smartphone app, a monitoring computer at the nurse's station, a hospital central monitoring system, etc.), enabling patients, family members, medical staff, or remote monitoring platforms to obtain patient monitoring data and alarm information in real time, thereby achieving remote monitoring and data recording. As some embodiments of this application, electronic module 3 can also be used to receive control commands from remote devices (e.g., adjusting alarm thresholds, initiating data recording, etc.).

[0035] As some embodiments of this application, the nasal cannula device 100 with monitoring function can be used at home or in the hospital according to the patient's needs, which significantly improves the safety of home rehabilitation for patients. In addition, for hospitalized patients, since medical staff often need to manage multiple patients at the same time and frequently switch between different work scenarios, it may be impossible to observe and listen to the patient's breathing status at any time. The nasal cannula device 100 with monitoring function of this application can monitor the patient's breathing status in real time and provide timely feedback to medical staff, which significantly improves the safety of the oxygen therapy process and reduces the workload of medical staff.

[0036] It should be noted that by embedding at least a portion of the fiber optic acoustic sensing element 2 within the wall of at least one nasal cannula 11, at least a portion of the fiber optic acoustic sensing element 2 can be positioned at a location where the vibration and / or pressure fluctuations of the patient's respiratory sound waves are large. This makes the fiber optic acoustic sensing element 2 sensitive and reliable when acquiring respiratory signals, improving the accuracy of signal acquisition. Furthermore, it can separate the fiber optic acoustic sensing element 2 from the nasal cavity, ensuring the hygiene and safety of the patient using the nasal cannula device 100 with monitoring function. It can also reduce the risk of signal distortion caused by direct contact between the fiber optic acoustic sensing element 2 and nasal mucosal secretions, improving the stability and reliability of signal acquisition. By connecting the electronic module 3 to the fiber optic acoustic sensing element 2, the electronic module 3 receives optical signals from the fiber optic acoustic sensing element 2 and converts the optical signals into electrical signals for respiratory monitoring. The electronic module 3 issues an alarm when the respiratory sound wave reaches a preset condition and sends monitoring data to the mobile terminal 200. It can monitor the patient's breathing and issue an alarm when an abnormality is detected to ensure the patient's safety. At the same time, it enables the patient, family members, medical staff, or remote monitoring platform to obtain the patient's monitoring data and alarm information in real time to achieve remote monitoring and data recording.

[0037] Therefore, the nasal cannula device 100 with monitoring function of this application integrates the nasal cannula body 1, the fiber optic acoustic sensing element 2, and the electronic module 3, which enables the nasal cannula device 100 to have independent respiratory monitoring and early warning functions. It has a simple structure, is easy to use, and is accurate and reliable. At the same time, it can significantly improve the safety and intelligence level of the oxygen therapy process. Moreover, it is cheaper than external monitoring equipment and can reduce the workload of medical staff.

[0038] In some embodiments of the present invention, such as Figure 3As shown, the electronic module 3 includes: a data processing unit 31, an alarm unit 32, and a communication unit 33. The data processing unit 31 is used to receive optical signals from the fiber optic acoustic sensing element 2 and to convert the optical signals into electrical signals for respiratory monitoring. The data processing unit 31 is connected to both the alarm unit 32 and the communication unit 33. The data processing unit 31 is used to control the alarm unit 32 to issue an alarm when the respiratory sound wave reaches a preset condition, and to control the communication unit 33 to send monitoring data to the mobile terminal 200.

[0039] The data processing unit 31 receives optical signals from the fiber optic acoustic sensing element 2 and converts these optical signals into electrical signals for respiratory monitoring. As some embodiments of this application, the data processing unit 31 can analyze the optical signals from the fiber optic acoustic sensing element 2 using digital signal processing algorithms and convert them into electrical signals to extract relevant parameters (such as respiratory rate and respiratory intensity). The digital signal processing algorithm may include filtering, feature extraction, and pattern recognition to determine the respiratory cycle, calculate the number of breaths per minute, and detect abnormal respiratory patterns (such as prolonged periods without breathing, i.e., apnea).

[0040] The data processing unit 31 is connected to the alarm unit 32 and the communication unit 33. As some embodiments of this application, the data processing unit 31 can be electrically connected to the alarm unit 32 and the communication unit 33, and the data processing unit 31 can transmit electrical signals to the alarm unit 32 and the communication unit 33.

[0041] The data processing unit 31 is used to control the alarm unit 32 to issue an alarm when the respiratory sound wave reaches a preset condition, and to control the communication unit 33 to send monitoring data to the mobile terminal 200. As some embodiments of this application, when the respiratory sound wave reaches the preset condition, the data processing unit 31 transmits an electrical signal to the alarm unit 32 and controls the alarm unit 32 to issue an alarm. In addition, the data processing unit 31 transmits an electrical signal to the communication unit 33 and controls the communication unit 33 to send monitoring data to the mobile terminal 200. For example, when the patient's apnea time exceeds a preset value, the data processing unit 31 transmits an electrical signal to the alarm unit 32 and the communication unit 33, and controls the alarm unit 32 to issue an alarm and the communication unit 33 to send monitoring data to the mobile terminal 200.

[0042] As some embodiments of this application, the mobile terminal 200 may be configured as, but is not limited to, a smartphone app for patients or their families, a monitoring computer at a nurse station, a hospital central monitoring system, etc.

[0043] This setup enables real-time respiratory monitoring of patients and issues alarms when abnormalities are detected to ensure patient safety. It also allows patients, their families, medical staff, or remote monitoring platforms to obtain patient monitoring data and alarm information in real time, enabling remote monitoring and data recording.

[0044] In some embodiments of the present invention, such as Figure 3 As shown, the data processing unit 31 includes: a light source 311, a photodetector 312, an analog-to-digital converter circuit 313, and a microprocessor 314. The light source 311 is used to couple light into the fiber optic acoustic sensing element 2. The photodetector 312 is used to receive the optical signal fed back by the fiber optic acoustic sensing element 2 under the action of respiratory sound waves and convert the optical signal into an electrical signal. The analog-to-digital converter circuit 313 is connected to both the photodetector 312 and the microprocessor 314. The analog-to-digital converter circuit 313 is used to convert the electrical signal into an analog signal and send it to the microprocessor 314 for respiratory monitoring.

[0045] The light source 311 is used to couple light into the fiber optic acoustic sensing element 2. As some embodiments of this application, the light source 311 can couple light of a certain wavelength into the fiber optic acoustic sensing element 2. When the patient wears the nasal cannula device 100 with monitoring function, the vibration and / or pressure fluctuation of the respiratory sound wave generated by the patient's breathing will generate subtle vibration or pressure fluctuation on the fiber optic acoustic sensing element 2. The subtle vibration or pressure fluctuation can change the light intensity or spectral characteristics to modulate the optical signal.

[0046] The photodetector 312 is used to receive the optical signal fed back by the fiber optic acoustic sensing element 2 under the action of breathing sound waves and convert the optical signal into an electrical signal. As some embodiments of this application, the photodetector 312 can receive the optical signal from the fiber optic acoustic sensing element 2 and convert it into a corresponding electrical signal.

[0047] The analog-to-digital converter circuit 313 is connected to the photodetector 312 and the microprocessor 314. As some embodiments of this application, the analog-to-digital converter circuit 313 can be electrically connected to the photodetector 312 and the microprocessor 314.

[0048] The analog-to-digital converter circuit 313 is used to convert the electrical signal into an analog signal and send it to the microprocessor 314 for respiratory monitoring. As some embodiments of this application, the photodetector 312 can transmit the electrical signal to the analog-to-digital converter circuit 313, which converts the electrical signal into a digital signal and transmits it to the microprocessor 314 for respiratory monitoring.

[0049] By setting up a light source 311, it is convenient for the fiber optic acoustic sensing element 2 to collect signals. By setting up a photodetector 312, an analog-to-digital converter 313, and a microprocessor 314, it is convenient to perform tiered processing on the optical signals from the fiber optic acoustic sensing element 2 for respiratory monitoring.

[0050] In some embodiments of the present invention, the preset conditions include at least one of the following: respiratory cycle greater than a first preset value, respiratory rate lower than a second preset value, apnea time greater than a third preset value, respiratory intensity greater than a fourth preset value or less than a fifth preset value, and the difference between the maximum respiratory rate and the minimum respiratory rate within a preset time being greater than a sixth preset value, wherein the fifth preset value is less than the fourth preset value.

[0051] The respiratory cycle is greater than the first preset value, that is, the time required for one inhalation and exhalation is greater than the first preset value. As some embodiments of this application, the first preset value can be, but is not limited to, 3s, 4s, 5s, etc. For example, the first preset value is 4s. When the patient's respiratory cycle is greater than 4s, the data processing unit 31 controls the alarm unit 32 to issue an alarm and controls the communication unit 33 to send monitoring data to the mobile terminal 200.

[0052] If the respiratory rate is lower than the second preset value, that is, the number of breaths within one minute is lower than the second preset value, as some embodiments of this application, the second preset value can be, but is not limited to, 12 breaths / min, 16 breaths / min, 20 breaths / min, etc. For example, if the second preset value is 12 breaths / min, when the patient's respiratory rate is lower than 12 breaths / min, the data processing unit 31 controls the alarm unit 32 to issue an alarm, and controls the communication unit 33 to send monitoring data to the mobile terminal 200.

[0053] As some embodiments of this application, respiratory rate monitoring can be adjusted according to the patient's age. For example, the respiratory rate of children is approximately 18-60 breaths / min, the respiratory rate of adults is approximately 12-20 breaths / min, and the respiratory rate of the elderly is approximately 15-22 breaths / min. Furthermore, the respiratory rate of children varies with age. For example, the respiratory rate of newborns (0-12 months) is approximately 30-60 breaths / min, the respiratory rate of toddlers (1-3 years) is approximately 24-40 breaths / min, the respiratory rate of preschool children (3-5 years) is approximately 22-34 breaths / min, the respiratory rate of school-aged children (5-12 years) is approximately 18-30 breaths / min, and the respiratory rate of adolescents (12-18 years) is approximately 12-16 breaths / min.

[0054] As some embodiments of this application, the respiratory rate monitoring can be adjusted according to the patient's health condition. For example, for patients suffering from sleep apnea syndrome, hypothyroidism, encephalitis, cerebral hemorrhage, etc., the second preset value can be lowered, as patients with these conditions typically have a slower respiratory rate. For patients suffering from respiratory diseases, circulatory diseases, neuropsychiatric diseases, anemia, hyperthyroidism, fever, etc., the second preset value can be higher, as patients with these conditions typically have a faster respiratory rate. This setting enables accurate monitoring based on the patient's age and health condition, reducing the risk of deviations in monitoring results due to differences in the patient's age and health condition, and improving the scientific validity and reliability of the nasal cannula device 100 with monitoring function of this application.

[0055] If the apnea time is greater than the third preset value, that is, the time during which the patient's breathing airflow is interrupted is greater than the third preset value, as some embodiments of this application, the second preset value can be, but is not limited to, 10s, 20s, etc. For example, if the second preset value is 10s, when the patient's apnea time is greater than 10s, the data processing unit 31 controls the alarm unit 32 to issue an alarm and controls the communication unit 33 to send monitoring data to the mobile terminal 200.

[0056] When the respiratory intensity is greater than the fourth preset value or less than the fifth preset value, that is, the respiratory volume within one minute, i.e. the ventilation per minute, in some embodiments of this application, the fourth preset value can be 600ml / min and the fifth preset value can be 400ml / min. When the patient's respiratory intensity is greater than 600ml / min or less than 400ml / min, the data processing unit 31 controls the alarm unit 32 to issue an alarm and controls the communication unit 33 to send monitoring data to the mobile terminal 200.

[0057] If the difference between the maximum and minimum respiratory rates within a preset time is greater than a sixth preset value, in some embodiments of this application, the sixth preset value can be 10 breaths / min. When the difference between the patient's maximum and minimum respiratory rates is greater than 10 breaths / min, the data processing unit 31 controls the alarm unit 32 to issue an alarm and controls the communication unit 33 to send monitoring data to the mobile terminal 200.

[0058] It should be noted that the above preset conditions can be reasonably set according to the patient's actual situation.

[0059] This configuration allows the nasal cannula device 100 with monitoring function to have a wider detection range, enabling it to issue timely alarms when abnormal respiratory conditions are detected to ensure patient safety and ensure reliable monitoring.

[0060] In some embodiments of the present invention, such as Figure 1As shown, the alarm unit 32 includes: an audible alarm 321 and / or a visual alarm 322.

[0061] The alarm unit 32 includes a sound alarm 321, or a visual alarm 322, or both a sound alarm 321 and a visual alarm 322.

[0062] The alarm unit 32 includes a sound alarm 321. As some embodiments of this application, the sound alarm 321 can be constructed as a miniature buzzer. When the data processing unit 31 detects that the respiratory sound wave reaches the preset condition, the data processing unit 31 controls the miniature buzzer to emit a buzzing sound to remind the patient or surrounding medical staff to take necessary measures.

[0063] The alarm unit 32 includes a visual alarm 322. As some embodiments of this application, the visual alarm 322 can be configured as an LED indicator. When the data processing unit 31 detects that the respiratory sound wave reaches the preset condition, the data processing unit 31 controls the LED indicator to flash or change color (e.g., change to red) to remind the patient or surrounding medical staff to take necessary measures.

[0064] As some embodiments of this application, the volume of the sound alarm 321 and the flashing frequency of the visual alarm 322 can be set according to hospital requirements or home environment, so as to attract attention without excessively disturbing the residents.

[0065] As some embodiments of this application, the alarm unit 32 can also be connected to the mobile terminal 200 via the communication unit 33, so that patients, family members or surrounding medical staff can remotely control and turn off the alarm via the mobile terminal 200.

[0066] This configuration allows the alarm unit 32 to be arranged in various ways, making it easy to select according to actual needs and providing better selectivity. At the same time, it can issue an alarm in a timely manner when an abnormality is detected to ensure patient safety and ensure reliable monitoring.

[0067] In some embodiments of the present invention, the communication unit 33 is adapted to be wirelessly or wiredly connected to the mobile terminal 200.

[0068] This configuration facilitates the communication unit 33 to send monitoring data to the mobile terminal 200, enabling patients, family members, medical staff, or remote monitoring platforms to obtain patient monitoring data and alarm information in real time, thereby achieving remote monitoring and data recording.

[0069] In some embodiments of the present invention, the nasal cannula device 100 with monitoring function further includes: a blood oxygen saturation sensor, which is embedded in the tube wall of the nasal fork 11. The blood oxygen saturation sensor is used to irradiate nasal tissue and receive reflected light and is connected to the data processing unit 31. The data processing unit 31 is used to fuse and analyze the respiratory monitoring data with the blood oxygen saturation information detected by the blood oxygen saturation sensor, and to issue a composite alarm when the respiratory sound wave reaches a preset condition and is associated with the blood oxygen decrease information.

[0070] As some embodiments of this application, the blood oxygen saturation sensor uses photoplethysmography to detect blood oxygen saturation information. Specifically, oxyhemoglobin and deoxyhemoglobin have different absorption rates for red and infrared light of different wavelengths. With the heartbeat, arteries undergo periodic filling and contraction, resulting in periodic changes in the blood volume of the corresponding area. The synchronous fluctuations of the transmitted or reflected light signals caused by this change are called volumetric pulse waves. The blood oxygen saturation sensor calculates the arterial blood oxygen saturation value by measuring the ratio of changes in red and infrared light absorption during the systolic (high blood flow) and diastolic (low blood flow) phases of the heart, using a built-in algorithm model.

[0071] As some embodiments of this application, the blood oxygen saturation sensor includes two light-emitting diodes (LEDs). The two LEDs emit red light and infrared light respectively and emit light alternately. The light shines on the nasal septum mucosa or the capillary-rich tissue of the inner wall of the nasal cavity. Part of the light is absorbed by hemoglobin, and the other part is diffused or reflected.

[0072] As some embodiments of this application, the photodetector 312 can also be used to receive light signals reflected from tissue. The photodetector 312 receives unabsorbed red and infrared light and converts it into electrical signals. The photodetector 312 sends the electrical signals to the data processing unit 31. The data processing unit 31 can amplify and filter the electrical signals, separate the pulse wave signals corresponding to the red and infrared light, and calculate the blood oxygen saturation value.

[0073] When the respiratory sound wave reaches a preset condition and is associated with the blood oxygen decrease information, a composite alarm is issued. As some embodiments of this application, when the respiratory sound wave reaches a preset condition and the blood oxygen saturation value decreases by a preset value, the data processing unit 31 controls the alarm unit 32 to issue an alarm, and controls the communication unit 33 to send monitoring data and blood oxygen saturation information to the mobile terminal 200.

[0074] This configuration enables real-time monitoring of the patient's nasal tissue oxygen saturation and issues a composite alarm when the respiratory sound waves reach a preset condition and are correlated with the decrease in blood oxygen. This significantly improves the detection range of the nasal cannula device 100 with monitoring function in this application and further ensures patient safety.

[0075] In some embodiments of the present invention, the nasal cannula device 100 with monitoring function further includes: an electric oxygen valve 4, which is connected to the data processing unit 31 and disposed in the oxygen supply line 12. The data processing unit 31 is used to control the opening degree of the electric oxygen valve 4 according to respiratory monitoring data and / or blood oxygen saturation information, so as to control the oxygen supply amount of the oxygen supply line 12.

[0076] The electric oxygen valve 4 is connected to the data processing unit 31. As some embodiments of this application, the electric oxygen valve 4 and the data processing unit 31 can be electrically connected, and the data processing unit 31 can control the opening degree of the electric oxygen valve 4. The electric oxygen valve 4 is located in the oxygen supply pipeline 12. As some embodiments of this application, by controlling the opening degree of the electric oxygen valve 4, the oxygen supply amount of the oxygen supply pipeline 12 can be accurately controlled.

[0077] The data processing unit 31 is used to control the opening of the electric oxygen valve 4 based on respiratory monitoring data and / or blood oxygen saturation information. As some embodiments of this application, one or more physiological targets are preset, for example, the target blood oxygen saturation range is 94%-98%, and the target respiratory rate range is 12 breaths / min-20 breaths / min. When the respiratory monitoring data and blood oxygen saturation information are normal, the opening of the electric oxygen valve 4 is kept in a steady state. When the respiratory rate is lower than 12 breaths / min or the blood oxygen saturation is lower than 94%, the opening of the electric oxygen valve 4 is increased to increase the oxygen supply of the oxygen supply line 12. When the respiratory rate is higher than 20 breaths / min or the blood oxygen saturation is higher than 98%, the opening of the electric oxygen valve 4 is decreased to reduce the oxygen supply of the oxygen supply line 12.

[0078] This setup allows for precise and on-demand oxygen supply to patients, enabling dynamic oxygen delivery based on their individual circumstances. It can meet patients' needs while reducing the risk of nasal dryness, bleeding, and oxygen toxicity caused by fixed high-flow oxygen supply.

[0079] In some embodiments of the present invention, the data processing unit 31 is used to control the opening degree of the electric oxygen valve 4 during the expiratory phase of the same respiratory cycle to be less than the opening degree of the electric oxygen valve 4 during the inspiratory phase. Specifically, the data processing unit 31 can perform respiratory monitoring to determine whether the patient is in the expiratory or inspiratory phase, and can adjust the opening degree of the electric oxygen valve 4 accordingly based on the expiratory and inspiratory phases, so that the opening degree of the electric oxygen valve 4 during the expiratory phase of the same respiratory cycle is less than the opening degree of the electric oxygen valve 4 during the inspiratory phase.

[0080] As some embodiments of this application, when the data processing unit 31 detects that the patient is in the inspiratory phase, it controls the opening of the electric oxygen valve 4 to automatically increase by 30% compared to the baseline opening; when the data processing unit 31 detects that the patient is in the expiratory phase, it controls the opening of the electric oxygen valve 4 to automatically decrease by 50% compared to the baseline opening. The baseline opening can be the initial opening of the electric oxygen valve 4 when the patient is in a stable breathing state, and the baseline opening can be preset by the mobile terminal or adaptively adjusted by the data processing unit 31 according to the patient's blood oxygen saturation information.

[0081] This setup reduces oxygen waste and minimizes nasal dryness caused by oxygen reflux during exhalation, thus improving patient comfort.

[0082] In some embodiments of the present invention, the fiber optic acoustic sensing element 2 is configured as a fiber optic interferometric sensor or a fiber Bragg grating.

[0083] As some embodiments of this application, the fiber optic acoustic sensing element 2 is constructed as a fiber optic interferometric sensor. The fiber optic interferometric sensor utilizes the interference phenomenon of light to sense and measure the parameters to be measured by measuring the changes in interference fringes. When light passes through the interferometer, interference fringes are formed. When the vibration and / or pressure fluctuations of the patient's respiratory sound waves change, the interference fringes will change. By detecting the changes in the interference fringes, physical parameter information such as the vibration and / or pressure fluctuations of the patient's respiratory sound waves can be measured, thereby realizing the respiratory monitoring function.

[0084] As some embodiments of this application, the fiber acoustic sensing element 2 is constructed as a fiber Bragg grating. When the fiber in which the fiber Bragg grating is located is subjected to changes in external parameters (such as vibrations and / or pressure fluctuations of the patient's respiratory sound waves), the Bragg wavelength will shift accordingly. By monitoring the changes in the Bragg wavelength, physical parameter information such as vibrations and / or pressure fluctuations of the patient's respiratory sound waves can be measured, thereby realizing the respiratory monitoring function.

[0085] In some embodiments of the present invention, such as Figure 1 As shown, the electronic module 3 also includes: a housing 34, an optical connector 35, a data processing unit 31, an alarm unit 32, and a communication unit 33, all of which are located in the housing 34. The nasal cannula body 1 has an optical fiber interface 13 corresponding to the optical fiber acoustic sensing element 2. The optical connector 35 is connected to the optical fiber interface 13, and the optical connector 35 is connected to the data processing unit 31.

[0086] The data processing unit 31, the alarm unit 32, and the communication unit 33 are all housed in the housing 34. As some embodiments of this application, the housing 34 has a receiving space, and at least a portion of the data processing unit 31, the alarm unit 32, and the communication unit 33 are housed in the receiving space. For example, all of the data processing unit 31 and the communication unit 33 are housed in the receiving space, and a portion of the alarm unit 32 is housed in the receiving space.

[0087] The nasal cannula body 1 has a fiber optic interface 13 corresponding to the fiber optic acoustic sensing element 2. In some embodiments of this application, the nasal cannula body 1 has a fiber optic interface 13, which corresponds to the fiber optic acoustic sensing element 2. In some embodiments of this application, the fiber optic interface 13 can be positioned close to the nasal fork 11.

[0088] The optical connector 35 mates with the fiber optic interface 13 and is also connected to the data processing unit 31. In some embodiments of this application, the optical connector 35 is connected between the fiber optic interface 13 and the data processing unit 31 so that the data processing unit 31 can receive optical signals from the fiber optic acoustic sensing element 2 and convert them into electrical signals. In some embodiments of this application, the optical connector 35 can be electrically connected to both the fiber optic interface 13 and the data processing unit 31. It should be explained that since the fiber optic interface 13 corresponds to the fiber optic acoustic sensing element 2, when the optical connector 35 is connected to the fiber optic interface 13, the optical connector 35 is also connected to the fiber optic acoustic sensing element 2.

[0089] This configuration facilitates the data processing unit 31 to interface with the fiber optic acoustic sensing element 2 via the optical connector 35, enabling the data processing unit 31 to receive optical signals from the fiber optic acoustic sensing element 2 and convert them into electrical signals.

[0090] In some embodiments of the present invention, such as Figure 1 As shown, the optical connector 35 and the fiber optic interface 13 can be detached or non-detached. The optical connector 35 may be detachably or non-detachably coupled to the data processing unit 31.

[0091] In some embodiments of this application, the optical connector 35 is detachably coupled to the fiber optic interface 13, and the optical connector 35 is detachably coupled to the data processing unit 31. When different patients use it, only the nasal cannula body 1 needs to be replaced, without replacing the new electronic module 3. The electronic module 3 can be reused, reducing the cost of use. At the same time, it is convenient for hospitals to carry out aseptic disposal management of the nasal cannula body 1, and it is convenient to replace or repair the electronic module 3, reducing maintenance costs.

[0092] As some embodiments of this application, the optical connector 35 is detachably connected to the fiber optic interface 13, while the optical connector 35 is non-detachably coupled to the data processing unit 31. When different patients use it, only the nasal cannula body 1 needs to be replaced, without replacing the new electronic module 3. The electronic module 3 can be reused, reducing the cost of use. At the same time, it facilitates the hospital's aseptic disposal management of the nasal cannula body 1. Furthermore, it enables the optical connector 35 to be tightly connected to the data processing unit 31, reducing the risk of disconnection between the optical connector 35 and the data processing unit 31 when the nasal cannula device 100 with monitoring function of this application is used.

[0093] This configuration allows the optical connector 35 to have multiple connection methods with the fiber optic interface 13 and the data processing unit 31, which can be selected according to actual needs, providing better selectivity.

[0094] In some embodiments of the present invention, the electronic module 3 further includes a power supply for supplying power to the electrical components of the electronic module 3; And / or, the electronic module 3 is used to send an alarm to the mobile terminal 200 when the respiratory sound wave reaches a preset condition; And / or, the material of the nasal cannula body 1 is medical-grade silicone and / or medical-grade plastic.

[0095] The electronic module 3 further includes a power supply, which supplies power to the electrical components of the electronic module 3. As some embodiments of this application, the power supply can be configured as a rechargeable battery. The electronic module 3 may also include a power management circuit, which monitors the power supply level and provides a charging interface. The charging interface can be configured as a USB interface or a wireless charging interface.

[0096] This configuration allows the nasal cannula device 100 with monitoring function of this application to be used without an external power source, reducing the limitations of the usage location and improving its versatility.

[0097] The electronic module 3 is used to send an alarm to the mobile terminal 200 when the respiratory sound wave reaches a preset condition. As some embodiments of this application, when the respiratory sound wave reaches a preset condition, the electronic module 3 sends monitoring data and an alarm to the mobile terminal 200. For example, when the patient's breathing apnea time exceeds a preset value, the electronic module 3 sends monitoring data and an alarm to the mobile terminal 200.

[0098] This setting enables the mobile terminal 200 to issue an alarm when an abnormal situation is detected, so that patients, family members, medical staff or remote monitoring platforms can receive the alarm in a timely manner and respond promptly to ensure patient safety.

[0099] The nasal cannula body 1 is made of medical-grade silicone and / or medical-grade plastic. Medical-grade silicone and medical-grade plastic have good biocompatibility and softness, which improves the comfort of patients wearing it.

[0100] As some embodiments of this application, the fiber optic acoustic sensing element 2 can be encapsulated with medical-grade silicone and / or medical-grade plastic to enable the fiber optic acoustic sensing element 2 to work stably for a long time in high humidity and high oxygen environments, thereby improving the service life of the fiber optic acoustic sensing element 2.

[0101] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0102] In the description of this invention, "first feature" and "second feature" may include one or more of the features.

[0103] In the description of this invention, "a plurality of" means two or more.

[0104] In the description of this invention, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0105] In the description of this invention, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicating that the first feature is at a higher horizontal level than the second feature.

[0106] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0107] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A nasal cannula device with monitoring functionality, characterized in that, The application relates to a nasal catheter, which comprises: a nasal catheter body, which comprises two nasal prongs and an oxygen supply pipeline, the two nasal prongs being connected with the oxygen supply pipeline, and the oxygen supply pipeline being adapted to be connected with an oxygen source; an optical fiber acoustic sensing element, at least part of the optical fiber acoustic sensing element being embedded in the tube wall of at least one of the nasal prongs, and the optical fiber acoustic sensing element being used for converting vibration and / or pressure fluctuation of patient breathing sound waves into optical signals; and an electronic module, which is connected with the optical fiber acoustic sensing element, is used for receiving the optical signals from the optical fiber acoustic sensing element and converting the optical signals into electrical signals for breathing monitoring, is used for issuing an alarm when the breathing sound waves reach a preset condition, and is used for sending monitoring data to a mobile terminal. The electronic module comprises a data processing unit, an alarm unit and a communication unit, the data processing unit is used for receiving the optical signals from the optical fiber acoustic sensing element and converting the optical signals into electrical signals for the breathing monitoring, the data processing unit is connected with the alarm unit and the communication unit, the data processing unit is used for controlling the alarm unit to issue an alarm when the breathing sound waves reach the preset condition, and is used for controlling the communication unit to send the monitoring data to the mobile terminal. The data processing unit comprises a light source, a photodetector, an analog-digital conversion circuit and a microprocessor, the light source is used for coupling light into the optical fiber acoustic sensing element, the photodetector is used for receiving the optical signals fed back by the optical fiber acoustic sensing element under the action of the breathing sound waves and converting the optical signals into the electrical signals, the analog-digital conversion circuit is connected with the photodetector and the microprocessor, and the analog-digital conversion circuit is used for sending the electrical signals after analog-digital conversion to the microprocessor for the breathing monitoring. The preset condition comprises at least one of the following: a breathing cycle being greater than a first preset value, a breathing frequency being lower than a second preset value, an apnea time being greater than a third preset value, a breathing intensity being greater than a fourth preset value or being lower than a fifth preset value, and a difference between a maximum breathing frequency and a minimum breathing frequency within a preset time being greater than a sixth preset value, wherein the fifth preset value is smaller than the fourth preset value.

2. The nasal cannula device with monitoring function according to claim 1, wherein, The application further comprises an oxygen saturation sensor, which is embedded in the tube wall of the nasal prong, is used for irradiating nasal cavity tissue and receiving reflected light, and is connected with the data processing unit, the data processing unit is used for performing fusion analysis on breathing monitoring data and oxygen saturation information detected by the oxygen saturation sensor, and is used for issuing a composite alarm when the breathing sound waves reach the preset condition and blood oxygen decreases.

3. The nasal cannula device with monitoring function according to claim 2, wherein, The application further comprises an electric oxygen valve, which is connected with the data processing unit and is arranged in the oxygen supply pipeline, and the data processing unit is used for controlling the opening degree of the electric oxygen valve according to the breathing monitoring data and / or the oxygen saturation information, so as to control the oxygen supply amount of the oxygen supply pipeline.

4. The nasal cannula device with monitoring function according to claim 1, wherein, ​ 5. The nasal cannula device with monitoring function according to claim 2, wherein, ​ ​ 6. The nasal cannula device with monitoring function according to claim 5, wherein, ​ 7. The nasal cannula device with monitoring function according to claim 6, wherein, The data processing unit is configured to control the opening degree of the electric oxygen valve in the expiratory phase to be smaller than the opening degree of the electric oxygen valve in the inspiratory phase in the same breathing cycle.

8. The nasal cannula device with monitoring function according to claim 2, wherein, The electronic module further comprises a housing, an optical connector, the data processing unit, the alarm unit and the communication unit are arranged in the housing, the nasal catheter body is formed with a fiber interface corresponding to the fiber acoustic sensing element, the optical connector is connected with the fiber interface, and the optical connector is connected with the data processing unit.

9. The nasal cannula device with monitoring function according to claim 8, wherein, The optical connector and the fiber interface are detachably connected or non-detachably connected. The optical connector and the data processing unit are detachably connected or non-detachably connected.

10. The nasal cannula device with monitoring function according to any one of claims 1-9, wherein, The electronic module further comprises a power supply configured to supply power to the power-consuming components of the electronic module. The electronic module is configured to send an alarm to the mobile terminal when the breathing sound wave reaches a preset condition. The material of the nasal catheter body is medical-grade silicone and / or medical-grade plastic.

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