Intelligent sputum suction system and control method thereof

Abstract

The invention discloses an intelligent sputum suction system and a control method thereof. The intelligent sputum suction system comprises a liquid storage bottle, a flow monitor, a buffer bottle, a filter, an air pressure sensor, an electromagnetic pressure release valve, a negative pressure pump and a controller. The flow monitor, the air pressure sensor, the electromagnetic pressure release valve and the negative pressure pump are all connected with the controller; the output end of the liquid storage bottle is connected with the input end of the buffer bottle through a third pipeline; the output end of the buffer bottle is connected with the input end of the filter through a second pipeline; the output end of the filter is connected with the negative pressure pump through a first pipeline; the electromagnetic pressure release valve and the air pressure sensor are both mounted on the first pipeline; the flow monitor is mounted on the liquid storage bottle; the sputum suction time can be automatically adjusted, and the health condition of a patient is guaranteed to the maximum extent.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and more particularly to an intelligent sputum suction system and a control method thereof. Background Art

[0002] At present, the existing intelligent sputum suction systems and control methods have low intelligence levels and are unable to automatically adjust the sputum suction time, thereby affecting the health status of the patient.

[0003] Therefore, how to provide an intelligent sputum suction system and a control method thereof, which have a high degree of intelligence and can automatically adjust the sputum suction time to maximize the health status of the patient is an urgent problem that needs to be solved by technical personnel in this field. Summary of the invention

[0004] In view of this, an object of the present invention is to provide an intelligent sputum suction system and a control method thereof, which have a high degree of intelligence and can automatically adjust the sputum suction time to ensure the health status of the patient to the greatest extent.

[0005] In order to achieve the above object, the present invention adopts the following technical solution:

[0006] An intelligent sputum suction system includes a liquid storage bottle, a flow monitor, a buffer bottle, a filter, an air pressure sensor, an electromagnetic pressure relief valve, a negative pressure pump and a controller;

[0007] The flow monitor, the air pressure sensor, the electromagnetic pressure relief valve and the negative pressure pump are all connected to the controller;

[0008] The output end of the liquid storage bottle is connected to the input end of the buffer bottle through a third pipeline;

[0009] The output end of the buffer bottle is connected to the input end of the filter through a second pipeline;

[0010] The output end of the filter is connected to the negative pressure pump through a first pipeline;

[0011] The electromagnetic pressure relief valve and the air pressure sensor are both installed on the first pipeline;

[0012] The flow monitor is installed on the liquid storage bottle;

[0013] in:

[0014] The liquid storage bottle is used to store the sucked sputum;

[0015] The flow monitor is used to monitor the flow of aspirated sputum;

[0016] The buffer bottle is used to buffer the airflow;

[0017] The filter is used to filter water vapor and sputum;

[0018] The air pressure sensor is used to collect the negative pressure in the first pipeline;

[0019] The electromagnetic pressure relief valve is used for pressure relief;

[0020] The controller is used to control the negative pressure pump to generate a preset negative pressure;

[0021] The controller is used to control the opening and closing of the electromagnetic pressure relief valve;

[0022] The controller is used to obtain the negative pressure collected by the air pressure sensor;

[0023] The controller is used to obtain the sputum flow monitored by the flow monitor.

[0024] Preferably, the intelligent sputum suction system further comprises a flow sensor, and the flow sensor is installed on the first pipeline;

[0025] The flow sensor is connected to the controller; wherein the flow sensor is used to measure the gas flow in the first pipeline and send it to the controller.

[0026] Preferably, the intelligent sputum suction system further comprises a vacuum control device and a sputum suction tube;

[0027] The sputum suction tube is connected to the input end of the liquid storage bottle through the vacuum control device and the fourth pipeline in sequence;

[0028] in:

[0029] The sputum suction tube is used to suck the sputum to be sucked;

[0030] The vacuum control device is used to control the flow rate of air in the sputum suction tube and the flow rate of sucked sputum.

[0031] Preferably, the controller includes a main control unit, a motor and a motor drive circuit;

[0032] The main control unit is connected to the negative pressure pump via the motor drive circuit and the motor in sequence to control the negative pressure pump to generate a preset negative pressure.

[0033] Preferably, the controller further includes a solenoid valve drive circuit;

[0034] The main control unit is connected to the electromagnetic pressure relief valve through the electromagnetic valve driving circuit to control the opening and closing of the electromagnetic pressure relief valve.

[0035] Preferably, the controller further includes a lithium battery and a power detection module;

[0036] The lithium battery is connected to the main control unit and is used to supply power to the main control unit;

[0037] The input end of the power detection module is connected to the lithium battery, and the output end is connected to the main control module; wherein the power detection module is used to detect the remaining power of the lithium battery and send the detected remaining power to the main control unit.

[0038] Preferably, the controller further includes a human-computer interaction module;

[0039] The human-computer interaction module includes a display screen, a button module and an alarm module;

[0040] The display screen, the button module and the alarm module are all connected to the main control unit;

[0041] in:

[0042] The display screen is used to display the suction time, the negative pressure preset for the negative pressure pump and the remaining power of the lithium battery;

[0043] The button module is used to select the negative pressure gear to control the negative pressure pump to generate a preset negative pressure;

[0044] The button module is also used to turn the machine on and off;

[0045] The button module is also used to control the operation or stop of sputum suction;

[0046] The alarm module is also used to alarm when the sputum suction is overtime.

[0047] A control method for an intelligent sputum suction system is implemented based on the above-mentioned intelligent sputum suction system, comprising the following steps:

[0048] S1: Control the negative pressure pump to generate a preset negative pressure;

[0049] S2: Real-time acquisition of the negative pressure value collected by the air pressure sensor and the sputum flow rate monitored by the flow monitor;

[0050] S3: comparing the currently collected negative pressure value with the first negative pressure threshold;

[0051] If the currently collected negative pressure value is less than the first negative pressure threshold, execute S3;

[0052] If the currently collected negative pressure value is greater than or equal to the first negative pressure threshold, execute S4;

[0053] S4: Set the suction time to 0 and start timing;

[0054] When the suction time is greater than or equal to 0 and less than or equal to the second time threshold, execute S5; at the same time, when the suction time is greater than the first time threshold, open the pressure relief valve to release pressure, and close the pressure relief valve when the negative pressure value collected by the air pressure sensor drops to the second negative pressure threshold;

[0055] When the suction time is greater than the second time threshold and less than or equal to the third time threshold, the first alarm is executed;

[0056] When the suction time is greater than the third time threshold and less than or equal to the fourth time threshold, a second alarm is executed;

[0057] When the suction time is greater than the fourth time threshold and the currently monitored sputum flow rate is less than the preset value, the suction is stopped and S2 is executed after the second preset time interval;

[0058] S5: Compare the currently collected negative pressure value with the second negative pressure threshold;

[0059] If the currently collected negative pressure value is less than the second negative pressure threshold, the pressure relief valve is opened to release pressure to stop suctioning, and S2 is executed after a first preset time interval;

[0060] If the currently collected negative pressure value is greater than or equal to the second negative pressure threshold, the timing continues.

[0061] Preferably, the calculation formula of the first negative pressure threshold is: T1=1800ln(x)-13000; (1)

[0062] Wherein, T1 represents the first negative pressure threshold, and x represents the negative pressure preset for the negative pressure pump.

[0063] Preferably, the calculation formula of the second negative pressure threshold is: T2=0.04x+2000; (2)

[0064] Wherein, T2 represents the second negative pressure threshold, and x represents the negative pressure preset for the negative pressure pump.

[0065] Preferably, the first time threshold is 6 seconds;

[0066] The second time threshold is 12 seconds;

[0067] The third time threshold is 15 seconds;

[0068] The fourth time threshold is 18 seconds, 19 seconds or 20 seconds;

[0069] The first preset time is 3 minutes;

[0070] The second preset time is 3 minutes, 4 minutes or 5 minutes.

[0071] It can be seen from the above technical solutions that, compared with the prior art, the present invention discloses an intelligent sputum suction system and a control method thereof, which can automatically adjust the sputum suction time to ensure the health status of the patient to the greatest extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0072] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0073] Figure 1 A structural block diagram of an intelligent sputum suction system provided by an embodiment of the present invention;

[0074] Figure 2 A flow chart of a control method for an intelligent sputum suction system provided in one embodiment of the present invention. DETAILED DESCRIPTION

[0075] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0076] like Figure 1 As shown, an embodiment of the present invention discloses an intelligent sputum suction system, including a liquid storage bottle, a flow monitor, a buffer bottle, a filter, an air pressure sensor, an electromagnetic pressure relief valve, a negative pressure pump and a controller;

[0077] The flow monitor, the air pressure sensor, the electromagnetic pressure relief valve and the negative pressure pump are all connected to the controller;

[0078] The output end of the liquid storage bottle is connected to the input end of the buffer bottle through a third pipeline;

[0079] The output end of the buffer bottle is connected to the input end of the filter through a second pipeline;

[0080] The output end of the filter is connected to the negative pressure pump through a first pipeline;

[0081] The electromagnetic pressure relief valve and the air pressure sensor are both installed on the first pipeline;

[0082] The flow monitor is installed on the liquid storage bottle;

[0083] in:

[0084] The liquid storage bottle is used to store the sucked sputum;

[0085] The flow monitor is used to monitor the flow of aspirated sputum;

[0086] The buffer bottle is used to buffer the airflow;

[0087] The filter is used to filter water vapor and sputum;

[0088] The air pressure sensor is used to collect the negative pressure in the first pipeline;

[0089] The electromagnetic pressure relief valve is used for pressure relief;

[0090] The controller is used to control the negative pressure pump to generate a preset negative pressure;

[0091] The controller is used to control the opening and closing of the electromagnetic pressure relief valve;

[0092] The controller is used to obtain the negative pressure collected by the air pressure sensor;

[0093] The controller is used to obtain the sputum flow monitored by the flow monitor.

[0094] In one embodiment, the intelligent sputum suction system further includes a flow sensor, and the flow sensor is installed on the first pipeline;

[0095] The flow sensor is connected to the controller; wherein the flow sensor is used to measure the gas flow in the first pipeline and send it to the controller.

[0096] In one embodiment, the intelligent sputum suction system further comprises a vacuum control device and a sputum suction tube;

[0097] The sputum suction tube is connected to the input end of the liquid storage bottle through the vacuum control device and the fourth pipeline in sequence;

[0098] in:

[0099] The sputum suction tube is used to suck the sputum to be sucked;

[0100] The vacuum control device is used to control the flow rate of air in the sputum suction tube and the flow rate of sucked sputum.

[0101] In one embodiment, the controller includes a main control unit, a motor and a motor driving circuit;

[0102] The main control unit is connected to the negative pressure pump via the motor drive circuit and the motor in sequence to control the negative pressure pump to generate a preset negative pressure.

[0103] In one embodiment, the controller further comprises a solenoid valve driving circuit;

[0104] The main control unit is connected to the electromagnetic pressure relief valve through the electromagnetic valve driving circuit to control the opening and closing of the electromagnetic pressure relief valve.

[0105] In this embodiment, the motor driving circuit and the solenoid valve driving circuit are both composed of a driving chip and a field effect transistor, which can meet the requirements of long-term stable operation of the negative pressure pump and rapid opening and closing of the electromagnetic pressure relief valve.

[0106] In one embodiment, the controller further includes a lithium battery and a power detection module;

[0107] The lithium battery is connected to the main control unit and is used to supply power to the main control unit;

[0108] The input end of the power detection module is connected to the lithium battery, and the output end is connected to the main control module; wherein the power detection module is used to detect the remaining power of the lithium battery and send the detected remaining power to the main control unit.

[0109] In one embodiment, the controller further comprises a human-computer interaction module;

[0110] The human-computer interaction module includes a display screen, a button module and an alarm module;

[0111] The display screen, the button module and the alarm module are all connected to the main control unit;

[0112] in:

[0113] The display screen is used to display the suction time, the negative pressure preset for the negative pressure pump and the remaining power of the lithium battery;

[0114] The button module is used to select the negative pressure gear to control the negative pressure pump to generate a preset negative pressure;

[0115] The button module is also used to turn the machine on and off;

[0116] The button module is also used to control the operation or stop of sputum suction;

[0117] The alarm module is also used to alarm when the sputum suction is overtime.

[0118] In this embodiment, the keys of the key module adopt a hardware filtering circuit, which can effectively solve the problem of repeated triggering caused by mechanical jitter.

[0119] The alarm module adopts an audible and visual alarm circuit, which is composed of an active buzzer driven by a triode and an LED.

[0120] like Figure 2 As shown, a control method of an intelligent sputum suction system is implemented based on the above-mentioned intelligent sputum suction system, comprising the following steps:

[0121] S1: Control the negative pressure pump to generate a preset negative pressure;

[0122] S2: Real-time acquisition of the negative pressure value collected by the air pressure sensor and the sputum flow rate monitored by the flow monitor;

[0123] S3: comparing the currently collected negative pressure value with the first negative pressure threshold;

[0124] If the currently collected negative pressure value is less than the first negative pressure threshold, execute S3;

[0125] If the currently collected negative pressure value is greater than or equal to the first negative pressure threshold, execute S4;

[0126] S4: Set the suction time to 0 and start timing;

[0127] When the suction time is greater than or equal to 0 and less than or equal to the second time threshold, execute S5; at the same time, when the suction time is greater than the first time threshold, open the pressure relief valve to release pressure, and close the pressure relief valve when the negative pressure value collected by the air pressure sensor drops to the second negative pressure threshold;

[0128] When the suction time is greater than the second time threshold and less than or equal to the third time threshold, the first alarm is executed;

[0129] When the suction time is greater than the third time threshold and less than or equal to the fourth time threshold, a second alarm is executed;

[0130] When the suction time is greater than the fourth time threshold and the currently monitored sputum flow rate is less than the preset value, the suction is stopped and S2 is executed after the second preset time interval;

[0131] S5: Compare the currently collected negative pressure value with the second negative pressure threshold;

[0132] If the currently collected negative pressure value is less than the second negative pressure threshold, the pressure relief valve is opened to release pressure to stop suctioning, and S2 is executed after a first preset time interval;

[0133] If the currently collected negative pressure value is greater than or equal to the second negative pressure threshold, the timing continues.

[0134] In one embodiment, the calculation formula of the first negative pressure threshold is:

[0135] T1=1800ln(x)-13000; (1)

[0136] Wherein, T1 represents the first negative pressure threshold, and x represents the negative pressure preset for the negative pressure pump.

[0137] In one embodiment, the calculation formula of the second negative pressure threshold is: T2=0.04x+2000; (2)

[0138] Wherein, T2 represents the second negative pressure threshold, and x represents the negative pressure preset for the negative pressure pump.

[0139] In one embodiment, the first time threshold is 6 seconds;

[0140] The second time threshold is 12 seconds;

[0141] The third time threshold is 15 seconds;

[0142] The fourth time threshold is 18 seconds, 19 seconds or 20 seconds;

[0143] The first preset time is 3 minutes;

[0144] The second preset time is 3 minutes, 4 minutes or 5 minutes.

[0145] In this embodiment, assuming that the selected suction gear is the strong gear of 40 kPa, according to formula (1) and formula (2), the first negative pressure threshold T1 = 6.073 kPa; the second negative pressure threshold T2 = 3.6 kPa;

[0146] On this basis, the control method of the intelligent sputum suction system of the present invention is as follows:

[0147] S1: The main control unit drives the motor to rotate through the motor drive circuit, thereby driving the negative pressure pump to work, so that the negative pressure pump generates a preset negative pressure (40kpa);

[0148] S2: the main control unit acquires the negative pressure value collected by the air pressure sensor and the sputum flow rate monitored by the flow monitor in real time;

[0149] S3: The main control unit compares the currently collected negative pressure value with the first negative pressure threshold (T1=6.073 kpa);

[0150] If the currently collected negative pressure value is less than the first negative pressure threshold (T1=6.073 kpa), execute S3;

[0151] If the currently collected negative pressure value is greater than or equal to the first negative pressure threshold (T1 = 6.073 kpa), execute S4;

[0152] S4: The main control unit sets the sputum suction time to 0 and starts timing;

[0153] When the suction time is greater than or equal to 0 and less than or equal to the second time threshold (12s), S5 is executed; at the same time, when the suction time is greater than the first time threshold (6s), the main control unit opens the pressure relief valve to release pressure, and closes the pressure relief valve when the negative pressure value collected by the air pressure sensor drops to the second negative pressure threshold (T1=6.073kpa);

[0154] When the suction time is greater than the second time threshold (12s) and less than or equal to the third time threshold (15s), the first alarm is executed;

[0155] When the suction time is greater than the third time threshold (15s) and less than or equal to the fourth time threshold (18s or 19 or 20s), the second alarm is executed;

[0156] When the suction time is greater than the fourth time threshold (18s or 19 or 20s) and the currently monitored sputum flow rate is less than the preset value, the suction is stopped, and S2 is executed after a second preset time (3 minutes or 4 minutes or 5 minutes);

[0157] S5: Compare the currently collected negative pressure value with the second negative pressure threshold (T2=3.6kpa);

[0158] If the currently collected negative pressure value is less than the second negative pressure threshold value (T2=3.6 kpa), the pressure relief valve is opened to release pressure to stop suctioning, and S2 is executed after a first preset time (3 minutes);

[0159] If the currently collected negative pressure value is greater than or equal to the second negative pressure threshold (T2=3.6 kpa), the timing continues.

[0160] It is understandable that the sound and light intensity of the second alarm in S3 is higher than the sound and light intensity of the first alarm.

[0161] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0162] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An intelligent sputum suction system, characterized in that: It includes a liquid storage bottle, a flow monitor, a buffer bottle, a filter, an air pressure sensor, an electromagnetic pressure relief valve, a negative pressure pump and a controller; The flow monitor, the air pressure sensor, the electromagnetic pressure relief valve and the negative pressure pump are all connected to the controller; The output end of the liquid storage bottle is connected to the input end of the buffer bottle through a third pipeline; The output end of the buffer bottle is connected to the input end of the filter through a second pipeline; The output end of the filter is connected to the negative pressure pump through a first pipeline; The electromagnetic pressure relief valve and the air pressure sensor are both installed on the first pipeline; The flow monitor is installed on the liquid storage bottle; in: The liquid storage bottle is used to store the sucked sputum; The flow monitor is used to monitor the flow of aspirated sputum; The buffer bottle is used to buffer the airflow; The filter is used to filter water vapor and sputum; The air pressure sensor is used to collect the negative pressure in the first pipeline; The electromagnetic pressure relief valve is used for pressure relief; The controller is used to control the negative pressure pump to generate a preset negative pressure; The controller is used to control the opening and closing of the electromagnetic pressure relief valve; The controller is used to obtain the negative pressure collected by the air pressure sensor; The controller is used to obtain the sputum flow monitored by the flow monitor.

2. The intelligent sputum suction system according to claim 1, characterized in that: Also included is a vacuum control device and suction tube; The sputum suction tube is connected to the input end of the liquid storage bottle through the vacuum control device and the fourth pipeline in sequence; in: The sputum suction tube is used to suck the sputum to be sucked; The vacuum control device is used to control the flow rate of air in the sputum suction tube and the flow rate of sucked sputum.

3. The intelligent sputum suction system according to claim 1, characterized in that: The controller includes a main control unit, a motor and a motor drive circuit; The main control unit is connected to the negative pressure pump via the motor drive circuit and the motor in sequence to control the negative pressure pump to generate a preset negative pressure.

4. An intelligent sputum suction system according to claim 1 or 3, characterized in that: The controller also includes a solenoid valve drive circuit; The main control unit is connected to the electromagnetic pressure relief valve through the electromagnetic valve driving circuit to control the opening and closing of the electromagnetic pressure relief valve.

5. The intelligent sputum suction system according to claim 4, characterized in that: The controller also includes a lithium battery and a power detection module; The lithium battery is connected to the main control unit and is used to supply power to the main control unit; The input end of the power detection module is connected to the lithium battery, and the output end is connected to the main control module; wherein the power detection module is used to detect the remaining power of the lithium battery and send the detected remaining power to the main control unit.

6. The intelligent sputum suction system according to claim 5, characterized in that: The controller also includes a human-computer interaction module; The human-computer interaction module includes a display screen, a button module and an alarm module; The display screen, the button module and the alarm module are all connected to the main control unit; in: The display screen is used to display the suction time, the negative pressure preset for the negative pressure pump and the remaining power of the lithium battery; The button module is used to select the negative pressure gear to control the negative pressure pump to generate a preset negative pressure; The button module is also used to turn the machine on and off; The button module is also used to control the operation or stop of sputum suction; The alarm module is also used to alarm when the sputum suction is overtime.

7. A control method for an intelligent sputum suction system, characterized in that: The intelligent sputum suction system according to any one of claims 1 to 6 is implemented, comprising the following steps: S1: Control the negative pressure pump to generate a preset negative pressure; S2: Real-time acquisition of the negative pressure value collected by the air pressure sensor and the sputum flow rate monitored by the flow monitor; S3: comparing the currently collected negative pressure value with the first negative pressure threshold; If the currently collected negative pressure value is less than the first negative pressure threshold, execute S3; If the currently collected negative pressure value is greater than or equal to the first negative pressure threshold, execute S4; S4: Set the suction time to 0 and start timing; When the suction time is greater than or equal to 0 and less than or equal to the second time threshold, execute S5; at the same time, when the suction time is greater than the first time threshold, open the pressure relief valve to release pressure, and close the pressure relief valve when the negative pressure value collected by the air pressure sensor drops to the second negative pressure threshold; When the suction time is greater than the second time threshold and less than or equal to the third time threshold, the first alarm is executed; When the suction time is greater than the third time threshold and less than or equal to the fourth time threshold, a second alarm is executed; When the suction time is greater than the fourth time threshold and the currently monitored sputum flow rate is less than the preset value, the suction is stopped and S2 is executed after the second preset time interval; S5: Compare the currently collected negative pressure value with the second negative pressure threshold; If the currently collected negative pressure value is less than the second negative pressure threshold, the pressure relief valve is opened to release pressure to stop suctioning, and S2 is executed after a first preset time interval; If the currently collected negative pressure value is greater than or equal to the second negative pressure threshold, the timing continues.

8. The control method of the intelligent sputum suction system according to claim 7, characterized in that: The calculation formula of the first negative pressure threshold is: T1=1800ln(x)-13000; (1) Wherein, T1 represents the first negative pressure threshold, and x represents the negative pressure preset for the negative pressure pump.

9. The control method of the intelligent sputum suction system according to claim 7, characterized in that: The calculation formula of the second negative pressure threshold is: T2 = 0.04x + 2000; (2) Wherein, T2 represents the second negative pressure threshold, and x represents the negative pressure preset for the negative pressure pump.

10. The control method of the intelligent sputum suction system according to claim 7, characterized in that: The first time threshold is 6 seconds; The second time threshold is 12 seconds; The third time threshold is 15 seconds; The fourth time threshold is 18 seconds, 19 seconds or 20 seconds; The first preset time is 3 minutes; The second preset time is 3 minutes, 4 minutes or 5 minutes.

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