Portable respiratory movement monitoring system

Abstract

The utility model discloses a portable respiratory movement monitoring system, including host, nasal oxygen cannula, chest pressure band, belly pressure band and computer, chest sensor is provided in the chest pressure band, belly sensor is provided in the belly pressure band, host is connected with nasal oxygen cannula, chest pressure band, belly pressure band and computer, and the computer is connected with the computer. The nasal oxygen tube is worn on the nasal cavity of a patient, the chest pressure belt is worn on the chest of the patient, and the belly pressure belt is worn on the belly of the patient. The utility model provides a respiratory movement monitoring system which is light in weight, small in size, good in portability and convenient to operate, an extra electrocardio acquisition device does not need to be added, and the complexity of sleep monitoring is reduced.

Description

Technical Field

[0001] The utility model relates to the field of sleep apnea monitoring, in particular to a portable respiratory movement monitoring system. Background Art

[0002] Sleep apnea syndrome (SAS), also known as sleep apnea hypopnea sysdrome (SAHS), refers to a clinical syndrome in which various reasons lead to repeated apnea or hypopnea during sleep, causing hypoxemia, hypercapnia, and sleep interruption, thereby causing a series of pathophysiological changes in the body.

[0003] Commonly used respiratory airflow sensors include temperature sensors and pressure sensors. Temperature sensors detect temperature changes around the nose during breathing; pressure sensors primarily detect pressure changes caused by the flow of respiratory gases. Chest and abdominal respiratory signal monitoring includes respiratory induction plethysmography and piezoelectric belts. Respiratory induction plethysmography detects changes in chest cavity volume during breathing; piezoelectric belts contain built-in pressure sensors, such as piezoelectric film. During breathing, stress is generated in the chest, abdomen, and arms, which acts on the piezoelectric sensor, causing strain. This strain changes with breathing and can effectively reflect changes in breathing. Commonly used cardiac signal sensors include piezoelectric ceramics, piezoelectric film, and fiber optic sensors, which are primarily placed in seat cushions.

[0004] Polysomnography (PSG) is the gold standard for diagnosing and studying sleep apnea. It detects apnea events by continuously monitoring breathing, arterial oxygen saturation, EEG, ECG, heart rate and other indicators at night.

[0005] However, the existing polysomnographic main unit is heavy and not easy to move; there are many monitoring leads and the sensors are easy to fall off, which puts a great psychological burden on patients, makes it difficult to reflect the real sleeping situation, and is prone to first-night effect; at the same time, there are not many polysomnographic monitors in hospitals, and it takes a long time to make an appointment, and the monitoring costs are high. Utility Model Content

[0006] In order to solve the problems of the existing multi-lead host being heavy, inconvenient to move and having too many monitoring leads, the utility model proposes a portable respiratory movement monitoring system to solve the above problems.

[0007] The present application discloses a portable respiratory movement monitoring system, comprising a host, a nasal oxygen cannula, a chest pressure belt, an abdominal pressure belt and a computer. The chest pressure belt is provided with a chest sensor, the abdominal pressure belt is provided with an abdominal sensor, the host is connected to the nasal oxygen cannula, the chest pressure belt, the abdominal pressure belt and the computer. The nasal oxygen cannula is used to be worn in the patient's nasal cavity, the chest pressure belt is used to be worn on the patient's chest, and the abdominal pressure belt is used to be worn on the patient's abdomen.

[0008] Preferably, the host is attached to the chest pressure belt or the abdominal pressure belt via Velcro.

[0009] Preferably, the host includes a hollow shell, a main board and a rechargeable lithium battery are arranged inside the shell, a Luer connector is protruding from the top of the shell, the host is connected to the nasal oxygen tube through the Luer connector, and a through hole is provided on the surface of the shell.

[0010] Preferably, the main board is provided with a chest connector, an abdomen connector, an acceleration sensor, a nasal pressure sensor, an indicator light, a TF card, a switch button, a single chip microcomputer and a magnetic spring pin.

[0011] Preferably, the chest connector, abdomen connector, acceleration sensor, nasal pressure sensor, indicator light, TF card, switch button, magnetic spring pin and rechargeable lithium battery are all connected to the single chip microcomputer.

[0012] Preferably, the switch button is a touch switch, and the switch button passes through the through hole and is flush with the surface of the housing.

[0013] Preferably, the chest connector and the abdomen connector adopt a two-pin plug locking device, and the chest pressure belt and the abdomen pressure belt are provided with two-pin plugs, and the two-pin plug locking device can be fixedly connected to the two-pin plugs.

[0014] Preferably, the nasal pressure sensor is connected to a Luer connector.

[0015] Preferably, the magnetic pin is connected to the computer via a hole.

[0016] Preferably, a magnetic spring pin connector is provided in the one hole.

[0017] Beneficial effects of the utility model:

[0018] (1) The utility model provides a respiratory movement monitoring system that is light in weight, small in size, portable and easy to operate. The system can simultaneously collect nasal airflow, chest respiratory signals, chest cardiac peristalsis signals, abdominal respiratory signals and acceleration signals.

[0019] (2) The present invention combines the chest breathing signal with the heartbeat signal acquisition, eliminating the need for an additional ECG acquisition device and reducing the complexity of sleep monitoring.

[0020] (3) The present invention incorporates a three-axis acceleration sensor into the main unit, avoiding the need for an additional motion recorder to record sleep posture and body movement information; Velcro is used to secure the main unit, avoiding the need for an additional chest and abdominal strap to secure the main unit;

[0021] (4) The chest sensor and abdomen sensor plugs of the present invention adopt two-pin plugs, which are used in conjunction with the two-hole plug locking device on the host to improve the reliability of the sensor wearing connection and reduce the probability of falling off.

[0022] (5) The utility model adopts a magnetic spring needle method to realize functions such as host charging and upper computer communication, so that the device has functions such as automatic adsorption, zero insertion force, and automatic orientation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a configuration diagram of a portable respiratory motion monitoring system according to an embodiment of the present utility model;

[0024] Figure 2 Schematic diagram of the external structure of the host according to the embodiment of the utility model

[0025] Figure 3 This is a schematic diagram of the internal structure of the host computer according to an embodiment of the present utility model;

[0026] Figure 4 This is a schematic diagram of the combination of the host and the Velcro according to an embodiment of the utility model;

[0027] Figure 5 Schematic diagram of a two-pin jack locking device and a two-pin plug according to an embodiment of the present invention.

[0028] The reference numerals are as follows:

[0029] 1- Main unit, 2- Nasal oxygen cannula, 3- Chest pressure belt, 4- Abdominal pressure belt, 5- One-position port, 6- Computer, 7- Housing, 8- Luer connector, 9- Through hole, 10- Mainboard, 11- Acceleration sensor, 12- Single-chip microcomputer, 13- Nasal pressure sensor, 14- Indicator light, 15- Rechargeable lithium battery, 16- TF card, 17- Switch button, 18- Abdominal connector, 19- Magnetic spring pin, 20- Chest connector, 21- Two-pin plug locking device, 22- Two-pin plug. DETAILED DESCRIPTION

[0030] In order to make the objectives, technical solutions and advantages of this application more clear, the application is further described in detail below with reference to the accompanying drawings and examples.

[0031] The present application discloses a portable respiratory motion monitoring system. Figure 1As shown, it includes a host 1, a nasal oxygen tube 2, a chest pressure belt 3, an abdominal pressure belt 4 and a computer 6. The chest pressure belt 3 is provided with a chest sensor, and the abdominal pressure belt 4 is provided with an abdominal sensor. The host 1 is connected to the nasal oxygen tube 2, the chest pressure belt 3, the abdominal pressure belt 4 and the computer 6. The nasal oxygen tube is used to be worn in the patient's nasal cavity, the chest pressure belt 3 is used to be worn on the patient's chest, and the abdominal pressure belt 4 is used to be worn on the patient's abdomen. The schematic diagram of the connection structure between the host 1 and the Velcro 23 is shown in FIG. Figure 4 As shown, the Velcro 23 is attached to the chest pressure belt 3 or the abdominal pressure belt 4 .

[0032] The structural diagram of host 1 is as follows Figure 2 and Figure 3 As shown, the host 1 includes a hollow housing 7, which houses a mainboard 10 and a rechargeable lithium battery 15. A Luer connector 8 protrudes from the top of the housing 7, through which the host 1 connects to the nasal oxygen cannula 2. A through-hole 9 is provided on the surface of the housing 7. The mainboard 10 is equipped with a chest connector 20 connected to the chest pressure belt 3 and the chest sensor, an abdominal connector 18 connected to the abdominal pressure belt 4 and the abdominal sensor, an acceleration sensor 11 for collecting triaxial acceleration signals, a nasal pressure sensor 13 for measuring respiratory airflow, an indicator light 14 for displaying the status of the host 1, a TF card 16 for storing data, a switch button 17 for controlling the on / off of the circuit, a single-chip microcontroller 12 for controlling the mainboard circuit, and a magnetic spring pin 19. In this embodiment, the single-chip microcontroller model is STM32F411CEU6. The chest connector 20 and the abdomen connector 18 use a two-pin plug locking device 21. The chest pressure belt 3 and the abdomen pressure belt 4 are provided with a two-pin plug 22. The two-pin plug locking device 21 and the two-pin plug 22 can be fixedly connected. The structure of the two-pin plug locking device 21 and the two-pin plug 22 is as follows: Figure 5 shown.

[0033] The Luer connector 8 is connected to the nasal pressure sensor 13 through a catheter for measuring respiratory airflow. The chest pressure belt 3 is connected to the chest connector 20 through a two-pin jack locking device 21 and a two-pin plug 22, and is used to monitor chest respiratory movement and cardiac shock signals generated by cardiac movement. The abdominal pressure belt 4 is connected to the connection part of the abdominal connector 18 through a two-pin jack locking device 21 and a two-pin plug 22 to monitor abdominal respiratory movement. The magnetic spring pin 19 is connected to the computer 6 through a one-position hole 5, and a magnetic spring pin connection is provided in the one-position hole 5 to realize real-time data collection, data transmission, charging and other functions. The switch button 17 passes through the through hole 9 and is flush with the surface of the shell 7, maintaining the overall beauty of the host and having the function of preventing accidental touch. The switch button 17 is a touch switch and is connected to the single-chip computer 12 through a circuit. The indicator light 14 is connected to the microcontroller 12 via a circuit to display different host statuses. The nasal pressure sensor 13, accelerometer 11, chest connector 20, and abdomen connector 18 are also connected to the microcontroller 12 via a circuit to collect nasal pressure signals, acceleration signals, chest respiratory motion signals, heartbeat signals, and abdominal respiratory motion signals. A rechargeable lithium battery 15 is also connected to the microcontroller 12 via a circuit. A TF card 16 and a magnetic spring pin 19 are also connected to the microcontroller 12.

[0034] In one specific embodiment, during use, the patient wears a nasal oxygen cannula 2 in their nasal cavity. Respiratory airflow is transmitted to the main unit 1 through the cannula 2 and Luer connector 8. A nasal pressure sensor 13 senses the pressure changes caused by the changes in respiratory airflow, and a single-chip microcontroller 12 acquires the corresponding pressure change signals through a signal acquisition circuit. The subject wears a chest pressure belt 3 and an abdominal pressure belt 4 on their chest and abdomen, respectively. During breathing, stress is generated in the chest, abdomen, and arms. This stress acts on the chest pressure belt 3 and the abdominal pressure belt 4, causing strain in the chest pressure belt 3 and the abdominal pressure belt 4. When the heart beats, strain is generated in the chest pressure belt 3, and the single-chip microcontroller 12 acquires the stress change value through the signal acquisition circuit. The main unit 1 is attached to the abdominal pressure belt 4 via Velcro. The single-chip microcontroller 12 uses the signal acquisition circuit to collect the three-axis acceleration signals generated by the acceleration sensor due to body movement. The main unit 1 is connected to the computer 6 via a magnetic pin 19 and a port 5, enabling communication functions such as charging and data transmission.

[0035] In order to better restore the real respiratory signal and cardiac impact signal, and provide more development space for subsequent scientific research and processing, the sampling frequency of the nasal pressure signal, abdominal respiratory movement signal, chest respiratory movement signal and cardiac impact signal collected by the nasal pressure sensor 13, abdominal sensor 18 and chest sensor 20 is set to 250Hz, and the sampling frequency of the acceleration signal collected by the acceleration sensor is set to 100Hz.

[0036] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A portable respiratory movement monitoring system, characterized in that: The device comprises a host (1), a nasal oxygen tube (2), a chest pressure belt (3), an abdominal pressure belt (4) and a computer (6); the chest pressure belt (3) is provided with a chest sensor, the abdominal pressure belt (4) is provided with an abdominal sensor, the host (1) is connected to the nasal oxygen tube (2), the chest pressure belt (3), the abdominal pressure belt (4) and the computer (6); the nasal oxygen tube (2) is used to be worn in the patient's nasal cavity, the chest pressure belt (3) is used to be worn on the patient's chest, and the abdominal pressure belt (4) is used to be worn on the patient's abdomen.

2. The portable respiratory motion monitoring system according to claim 1, characterized in that: The host (1) is attached to the chest pressure belt (3) or the abdomen pressure belt (4) via a Velcro (23).

3. The portable respiratory movement monitoring system according to claim 2, characterized in that: The host (1) includes a hollow shell (7), a mainboard (10) and a rechargeable lithium battery (15) are arranged inside the shell (7), a Luer connector (8) is protruding from the upper part of the shell (7), the host (1) is connected to the nasal oxygen tube (2) via the Luer connector (8), and a through hole (9) is provided on the surface of the shell (7).

4. The portable respiratory movement monitoring system according to claim 3, characterized in that: The mainboard (10) is provided with a chest connector (20), an abdomen connector (18), an acceleration sensor (11), a nasal pressure sensor (13), an indicator light (14), a TF card (16), a switch button (17), a single-chip microcomputer (12) and a magnetic spring pin (19).

5. The portable respiratory motion monitoring system according to claim 4, characterized in that: The chest connector (20), the abdomen connector (18), the acceleration sensor (11), the nasal pressure sensor (13), the indicator light (14), the TF card (16), the switch button (17), the magnetic spring pin (19) and the rechargeable lithium battery (15) are all connected to the single-chip computer (12).

6. The portable respiratory motion monitoring system according to claim 5, characterized in that: The switch button (17) is a touch switch, and the switch button (17) passes through the through hole (9) and is flush with the surface of the housing (7).

7. The portable respiratory motion monitoring system according to claim 6, characterized in that: The chest connector (20) and the abdomen connector (18) adopt a two-pin plug locking device (21), and the chest pressure belt (3) and the abdomen pressure belt (4) are provided with a two-pin plug (22). The two-pin plug locking device (21) and the two-pin plug (22) can be fixedly connected.

8. The portable respiratory movement monitoring system according to claim 7, characterized in that: The nasal pressure sensor (13) is connected to the Luer connector (8).

9. The portable respiratory movement monitoring system according to claim 8, characterized in that: The magnetic spring pin (19) is connected to the computer (6) via a port (5).

10. The portable respiratory motion monitoring system according to claim 9, characterized in that: A magnetic spring pin connector is provided in the first hole (5).

Images