CN110645366A - Valve device capable of intelligently regulating and controlling wall negative pressure suction - Google Patents

Abstract

The invention discloses a valve device capable of intelligently regulating wall negative pressure suction, and relates to the technical field of medical equipment, comprising a control device, a motor seat, a motor, a valve, a barometer with signal output and a power supply, and the end of the motor is fixed on the motor seat The output end of the motor is connected with the valve stem of the valve and transmits torque, the motor seat is fixed with the valve, the control device and the power supply are connected by wires, the motor and the control device are connected by wires, and the air pressure gauge with signal output is connected to the inlet of the valve. The gas end is connected with the control device, the regulating valve device is installed on the negative pressure suction channel of the wall through the connecting plug, and the outlet pressure of the valve is detected by the air pressure gauge with signal output, and is compared with the set pressure value inside the control device to control The device outputs a control signal, and by driving the stepping motor, rotating the valve, and throttling the valve core, it becomes the pressure after the valve, so as to realize the intelligent control of the negative pressure attraction of the wall.

Description

A valve device capable of intelligently regulating negative pressure suction on walls

technical field

The invention relates to the technical field of medical devices, in particular to a valve device capable of intelligently regulating wall negative pressure suction, which mainly provides automatic regulation for continuous closed negative pressure drainage technology.

Background technique

Wound treatment is a very important part of surgical treatment. As early as the 1970s, there were many literatures in the Soviet Union about exploring the application of negative pressure to treat refractory wounds and wounds.

Continuous closed negative pressure drainage treatment does not require regular dressing changes, and the patient does not need to move the affected limb regularly. The overall operation time is less and the content is simple. Compared with the previous complex dressing process, it is a leap forward. Continuous closure negative pressure drainage techniques include: suction wound closure therapy (Suction Wound Closure Therapy, SWCT), superficial negative pressure therapy (Topical Negative Pressure, TNP), vacuum assisted closure (Vacuum Assisted Closure, VAC), vacuum closure drainage (Vacuum Sealing Drainage, VSD), Negative Pressure Wound Therapy (Negative Pressure Wound Therapy, NPWT), etc. No matter what kind of negative pressure wound treatment technology, it is basically the same application method and technology, that is, it is covered with a special foam material and sealed with a medical semi-permeable membrane, and connected with a negative pressure suction device to increase wound drainage and improve wound microscopic. circulation, promote wound healing and other purposes.

The disadvantage of the existing bedside electric negative pressure suction device is that the compressor is noisy, the patient's compliance is poor, and the mechanical stability of the long-term work is poor, and the equipment is expensive and has certain limitations.

With the construction and development of hospitals, central suction systems have been installed in hospitals all over the country, which can achieve wound drainage and avoid infection and cavity formation through wall negative pressure suction. The suction system has no noise, constant pressure, prevents air leakage, and does not accumulate exudate in the wound surface, which is conducive to better growth of granulation tissue, promotes the early development of skin grafting, and promotes wound healing.

Existing wall-type negative pressure suction terminal, cooperate with medical negative pressure gauge, install the pressure gauge on the wall negative pressure suction device, connect the drainage tube to the sterile glass bottle, and connect with the continuous negative pressure drainage device closed on the wound surface That's it. In the application, the pressure can be adjusted at any time according to the suction condition, but it cannot be adjusted automatically and dynamically, and there is no intermittent or pulse suction that realizes the continuous closed negative pressure drainage technology, which has certain limitations.

SUMMARY OF THE INVENTION

The purpose of the present invention is to solve the deficiencies in the background technology, in order to solve the existing bedside electric negative pressure suction device compressor with large working noise, poor patient compliance, poor mechanical stability for long-term work, expensive equipment, and certain The limitations of the valve, and it cannot be automatically and dynamically adjusted, and there is no intermittent or pulsed suction that realizes the continuous closed negative pressure drainage technology, which has certain technical problems of limitations, but to provide a valve that can intelligently control the wall negative pressure suction device.

A valve device capable of intelligently regulating the suction of negative pressure on a wall, comprising a control device, a motor seat, a motor, a valve, a barometer with signal output and a power supply, the end of the motor is fixed on the motor seat, and the output end of the motor is connected to the valve of the valve The rod is connected to transmit torque, the motor seat is fixedly connected to the valve, the control device and the power supply are connected by wires, the motor and the control device are connected by wires, and the air pressure gauge with signal output is connected to the intake end of the valve and connected to the control device.

Preferably, the control device includes a display screen, a control button and a single-chip microcomputer.

Preferably, the control device is a PLC module, and the PLC module can improve the reliability, anti-interference, accuracy and versatility of the control system.

Preferably, the control device is a timer.

Preferably, the motor is a stepping motor.

Preferably, the power source is a battery.

Preferably, the valve is a plug valve.

Preferably, the valve includes a valve stem, an upper valve cover, a sleeve, a valve core, a valve seat and a valve body.

Preferably, the barometer with signal output is an electronic barometer with signal output.

Preferably, the model of the single-chip microcomputer is 80C51.

The control valve device is installed on the negative pressure suction channel of the wall through a connecting plug, and the pressure at the valve outlet is detected by a barometer with signal output, and compared with the set pressure value inside the control device, the control device outputs a control signal, and through the driving step Enter the motor, rotate the valve, and through the throttling of the valve core, it becomes the pressure after the valve, so as to realize the intelligent regulation of the attractive force of the negative pressure on the wall.

Beneficial effects of the present invention:

1. The present invention adopts the valve, the barometer with signal output, the stepping motor and other components as the working components, which can realize the intelligent regulation of the negative pressure at the valve outlet.

2. The present invention eliminates the disadvantage of inaccurate negative pressure control of the traditional medical negative pressure gauge, and improves the pressure control precision.

3. The invention adopts the intelligent control method to realize the automatic adjustment of the pressure value of the negative pressure port of the wall, which reduces the work intensity of medical workers.

4. Cooperate with the intelligent adjustment module to complete the precise dynamic control of the negative pressure at the valve outlet, and realize the intermittent or pulse suction method of continuous closed negative pressure drainage technology. In clinical application, the pressure can be adjusted at any time according to the suction condition, which is beneficial to dynamic suction and easy to operate.

Description of drawings

FIG. 1 is a schematic perspective view of the present invention.

Figure 2 is a schematic diagram of the structure of the motor connected to the valve.

Figure 3 is a cross-sectional view of the valve of the present invention.

FIG. 4 is a schematic diagram of the working state of the present invention.

Detailed ways

Please refer to Figures 1 to 4, a valve device that can intelligently control the suction of negative pressure on the wall, including a control device 1, a motor base 2, a motor 3, a valve 4, a barometer with signal output 5 and a power supply, the motor 3 The end of the motor is fixed on the motor seat 2 and the output end of the motor 3 is connected with the valve stem 40 of the valve 4 and transmits torque, the motor seat 2 is fixedly connected with the valve 4, the control device 1 and the power supply are connected by wires, and the motor 3 is connected with the control device 1. Through wire connection, the air pressure gauge 5 with signal output is connected to the intake end of the valve 4 and is connected to the control device 1.

Preferably, the control device 1 includes a display screen, a control button and a single-chip microcomputer.

Preferably, the control device 1 is a PLC module, and the PLC module can improve the reliability, anti-interference, accuracy and versatility of the control system.

Preferably, the control device 1 is a timer.

Preferably, the motor 3 is a stepping motor.

Preferably, the power source is a battery.

Preferably, the valve 4 is a plug valve.

Preferably, the valve 4 includes a valve stem 40 , an upper valve cover 41 , a sleeve 42 , a valve core 43 , a valve seat 44 and a valve body 45 .

Preferably, the barometer 5 with signal output is an electronic barometer with signal output.

Preferably, the model of the single-chip microcomputer is 80C51.

The working principle and use process of this embodiment:

The specific process of driving the stepper motor action: the control device 1 obtains the valve outlet pressure value through the air pressure gauge 5 with signal output, and then compares it with the set pressure value inside the control device 1 to determine whether the pressure is normal. If the deviation between the pressure value and the set pressure value is within the allowable range, no stepper motor action is required, and the system performs a program cycle, that is, continuous negative pressure suction is performed on the wound of the patient; if the deviation between the measured pressure value and the set pressure value exceeds the allowable range, the It is necessary to change the output signal of the control device 1 according to the actual deviation, drive the stepper motor to rotate in the corresponding direction and angle, and adjust the pressure of the valve. After the pressure adjustment is completed, the system will re-execute the program cycle. The method is automatic detection, and the PLC module is used as a control device to control the opening and closing of the valve or to compare and adjust the valve outlet pressure, which belongs to the prior art, and is often used in industrial workshops, unmanned workshops or dangerous large chemical workshops.

It is also possible to manually drive the stepping motor to rotate in the corresponding direction and angle, and then adjust the negative pressure value flowing through the valve, because the pressure value drawn by the central suction system of each hospital is unchanged, and the change may be the pressure of different hospitals. The value may be slightly different. In this case, we plug the present invention into the negative pressure channel of the wall. By observing the air pressure gauge 5, we can know the current pressure value of the connection end between the valve body 45 and the drainage pipe. If it is small, then manually control the corresponding direction and angle of the stepper motor to complete the adjustment and setting of the pressure value.

The specific method when the system needs to reset the pressure: the single-chip microcomputer detects the input of the pressure setting button, that is, it switches to the keyboard input program to set the pressure. After the setting is completed, the data is automatically stored in the EPROM and the settings saved in the EPROM are read again. The pressure value, then jump into the main program to read the inlet and outlet pressure values, and carry out the program cycle to drive the stepper motor to regulate the pressure valve until the pressure meets the demand.

The working principle and use process of this embodiment:

Please refer to FIGS. 1 to 3. One end of the valve body 45 is connected to the drainage tube, and the other end is connected to the negative pressure channel through a connecting plug. According to different situations, the medical staff sets different control programs. The control device 1 controls the motor 3 and then controls the The valve core 43 moves up and down in the sleeve 42 , the movement of the valve core 43 can control the flow rate in the valve 4 , and the air pressure gauge 5 can clearly display the pressure in the valve 4 .

Claims (10)

1. The utility model provides a but valve gear of intelligent control wall vacuum aspiration which characterized in that: including controlling means (1), motor cabinet (2), motor (3), valve (4), barometer (5) and the power of signal output, the end of motor (3) is fixed on motor cabinet (2) and the output of motor (3) is connected and the transmission moment of torsion with valve rod (40) of valve (4), motor cabinet (2) link firmly with valve (4), controlling means (1) passes through the wire with the power and is connected, motor (3) pass through the wire with controlling means (1) and are connected, barometer (5) of signal output are connected at the inlet end of valve (4) and are connected with controlling means (1).

2. The valve device capable of intelligently regulating and controlling negative pressure suction of the wall according to claim 1, wherein: the control device (1) comprises a display screen, a control button and a single chip microcomputer.

3. The valve device capable of intelligently regulating and controlling negative pressure suction of the wall according to claim 1, wherein: the control device (1) is a PLC module.

4. The valve device capable of intelligently regulating and controlling negative pressure suction of the wall according to claim 1, wherein: the control device (1) is a timer.

5. The valve device capable of intelligently regulating and controlling negative pressure suction of the wall according to claim 1, wherein: the motor (3) is a stepping motor.

6. The valve device capable of intelligently regulating and controlling negative pressure suction of the wall according to claim 1, wherein: the power supply is a battery.

7. The valve device capable of intelligently regulating and controlling negative pressure suction of the wall according to claim 1, wherein: the valve (4) is a plug valve.

8. The valve device capable of intelligently regulating and controlling negative pressure suction of the wall according to claim 1, wherein: the valve (4) comprises a valve rod (40), an upper valve cover (41), a sleeve (42), a valve core (43), a valve seat (44) and a valve body (45).

9. The valve device capable of intelligently regulating and controlling negative pressure suction of the wall according to claim 1, wherein: the air pressure meter (5) with the signal output is an electronic air pressure meter with the signal output.

10. The valve device capable of intelligently regulating and controlling negative pressure suction of the wall according to claim 2, wherein: the model of the single chip microcomputer is 80C 51.

Images