Intelligent negative pressure suction device

Abstract

The utility model discloses an intelligent negative pressure suction device relates to medical instrument technical field. Including: by negative pressure valve, baroceptor, motor, singlechip system, display module and coupling. Baroceptor gathers air pressure data, and singlechip system controls motor rotation according to setting air pressure threshold value and valve inner air pressure measurement value, and motor drives negative pressure valve adjusting knob rotation through coupling, and the valve inner negative pressure is accurately maintained in threshold value vicinity, and realizes negative pressure real -time display through display module. The device can improve the comfort of patient during treatment, alleviate the work burden of medical staff, improve the digital level of medical service through intelligent design accurate control negative pressure size.

Description

Technical Field

[0001] This utility model relates to the field of medical technology, specifically to an intelligent negative pressure suction device. Background Technology

[0002] Negative pressure suction is a very common treatment method in hospitals, and each bed is equipped with a central negative pressure terminal. Common negative pressure valves are equipped with a pointer-type negative pressure gauge and a manual adjustment knob, allowing medical staff to manually control the pressure within the valve by rotating the knob.

[0003] However, when medical staff manually control the pressure using a knob, the lack of precision in manual adjustment and frequent pressure fluctuations in the negative pressure source make it difficult to accurately adjust and maintain a reasonable negative pressure level. This problem not only affects the treatment effect but also easily causes discomfort or even pain to patients during treatment. To ensure the treatment effect, medical staff need to frequently check and adjust the negative pressure level manually, increasing their workload. Therefore, there is an urgent need for a solution to achieve precise and automated adjustment of the negative pressure of the negative pressure suction device. Utility Model Content

[0004] To address the aforementioned shortcomings of existing technologies, this utility model aims to propose an intelligent negative pressure suction device: such as... Figure 1 The device integrates a pressure sensor, a microcontroller system, and a motor to achieve intelligent negative pressure suction. By adopting a negative feedback adjustment mode, it adjusts the air pressure inside the negative pressure valve in real time and precisely controls it within a small range.

[0005] The intelligent negative pressure regulation system uses a pressure sensor to detect the air pressure value inside the negative pressure valve. The pressure sensor then transmits data to the microcontroller and processes the data to obtain the negative pressure value. The display module displays the current measurement value in real time.

[0006] The microcontroller system is equipped with a push-button switch module, which allows operators to use the module to set the negative pressure threshold and display it on the display module.

[0007] The microcontroller system compares the negative pressure value obtained by the microcontroller with the negative pressure threshold set by the user, and controls the rotation direction of the motor based on the comparison result. The output shaft of the stepper motor is rigidly connected to the negative pressure adjustment knob. By rotating the motor forward, backward, or stopping, the negative pressure adjustment knob is driven to control the magnitude of the negative pressure, and the output negative pressure can be controlled within a certain range of the set threshold.

[0008] This utility model has the following beneficial effects:

[0009] 1) It can quickly and accurately adjust the negative pressure to the required level, reducing patient discomfort during treatment and more efficiently assisting patients in treatment;

[0010] 2) Reduce the workload of medical staff and improve the level of digitalization of medical services. Attached Figure Description

[0011] Figure 1 System diagram of the negative pressure suction device of this utility model;

[0012] Figure 2 A schematic diagram of the circuit system described in this embodiment of the utility model;

[0013] Figure 3 This utility model provides a schematic diagram of the motor's operating mode. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] like Figure 1 As shown, an intelligent negative pressure suction device is described. The device consists of a negative pressure valve (1), a pressure sensor (2), a brushless servo motor (3), a microcontroller system (4), an OLED display module (5), and a coupling (6).

[0016] The negative pressure valve (1) has a valve body made of medical-grade 316 stainless steel and includes an input conduit, an output conduit, a negative pressure measuring hole, and a control knob. The input conduit connects to the hospital's negative pressure terminal, which serves as the negative pressure source, and the output conduit connects to the collection device used in negative pressure suction therapy. A pressure sensor (2) connects to the pre-reserved measuring hole on the negative pressure valve body (1) via a silicone hose and uses a stainless steel clip to ensure airtightness. An adjustment knob is provided on the valve body (1). When the adjustment knob is rotated in the positive or negative direction, the pressure in the output conduit of the negative pressure valve (1) increases or decreases accordingly.

[0017] In the mechanical drive device, the servo motor (3) adopts pulse frequency control. The output shaft of the servo motor (3) is rigidly connected in series with the adjustment knob of the negative pressure valve (1) through a customized high-strength aluminum alloy coupling (6), which ensures that the rotation output power of the servo motor (3) is transmitted to the adjustment knob of the negative pressure valve (1), while achieving a rotation accuracy of 0.1° and a drive response time of <30ms.

[0018] The microcontroller system (4) includes a power supply circuit, a main control chip, a signal AD conversion module, a button module, and a DIP switch. In terms of circuit connections: the data output pin of the pressure sensor (2) is electrically connected to the input port of the microcontroller system (4) for receiving analog signals; the OLED display module (5) is electrically connected to the communication port of the microcontroller system (4); the control port of the motor drive module is electrically connected to the communication port of the main control chip; the drive port of the servo motor is electrically connected to the output port of the motor drive module within the microcontroller system (4); and the input port of the OLED display module is electrically connected to the display drive port of the microcontroller system (4).

[0019] like Figure 2 As shown, the air pressure sensor (2) is responsible for detecting the magnitude of the negative pressure in the output negative pressure valve and outputting an analog signal. The output analog signal is converted into a digital signal by an AD converter in the microcontroller system (4) and then processed by the main control chip. The microcontroller system (4) is equipped with a button module and a DIP switch. When the DIP switch is closed, the servo motor (3) starts normally and the LED indicator lights up. When the DIP switch is open, the servo motor stops working and the LED indicator turns off. By pressing the "+" and "-" keys of the button switch, the operator can add or subtract the negative pressure threshold set in the microcontroller. The current negative pressure measurement value in the valve and the set negative pressure threshold are displayed in real time on the OLED display module (5) and refreshed at a frequency of 5Hz.

[0020] like Figure 3 As shown, the servo motor drive mode is set as follows: the main control chip compares the negative pressure value detected by the air pressure sensor with the set negative pressure threshold. When the air pressure value detected by the air pressure sensor is within ±0.5 kPa of the set threshold, the servo motor does not rotate; when the detected air pressure value is higher than the set threshold by 0.5 kPa, the servo motor rotates in the forward direction; when the detected air pressure value is lower than the set threshold by 0.5 kPa, the servo motor rotates in the forward direction, and the negative pressure valve control knob is driven by the servo motor to rotate in the forward and negative directions. The negative pressure valve control knob rotates in real time under control, so that the negative pressure in the output conduit is precisely controlled within the set threshold ±0.5 kPa range.

[0021] This utility model has been described through several embodiments. Those skilled in the art will understand that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are protected by this utility model.

Claims

1. An intelligent negative pressure suction device, characterized in that: It consists of a negative pressure valve (1), a pressure sensor (2), a motor (3), a microcontroller system (4), an OLED module (5), and a coupling (6). The pressure sensor (2) measures the pressure data inside the negative pressure valve. The microcontroller drives the motor (3) to drive the adjustment knob of the negative pressure valve (1) through the coupling (6) according to the pressure sensor data and the threshold set by the DIP switch, so that the pressure inside the valve is accurately maintained near the threshold and displayed through the OLED module (5).

2. The intelligent negative pressure suction device according to claim 1, characterized in that: The pressure sensor (2) has its measuring probe connected to the measuring opening of the negative pressure valve (1) via a lead-out hose.

3. The intelligent negative pressure suction device according to claim 1, characterized in that: The air pressure sensor (2) measures the air pressure at the measuring probe in real time to obtain the negative pressure value inside the negative pressure valve (1).

4. The intelligent negative pressure suction device according to claim 1, characterized in that: The microcontroller system (4) can set the negative pressure threshold through its button switch.

5. The intelligent negative pressure suction device according to claim 1, characterized in that: The microcontroller system (4) generates a motor drive signal by comparing the real-time negative pressure measured by the air pressure sensor (2) with the set threshold.

6. The intelligent negative pressure suction device according to claim 1, characterized in that: The motor (3) can be a brushless servo motor, a brushed servo motor or a high-speed stepper motor. The motor (3) can rotate in the forward or reverse direction or remain stationary under the control of the motor drive signal.

7. The intelligent negative pressure suction device according to claim 1, characterized in that: The output shaft of the motor (3) is rigidly connected to the adjustment knob of the negative pressure valve (1) via a coupling (6).

8. The intelligent negative pressure suction device according to claim 1, characterized in that: The real-time negative pressure value is measured by the air pressure threshold and the air pressure sensor (2) and displayed through the OLED module (5).

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