Indwelling catheter control system capable of automatically alarming

Abstract

The utility model discloses an automatic alarm indwelling catheter control system, and relates to the technical field of indwelling catheters, in particular to an automatic urinary tract opening and closing alarm which comprises a central processing unit, a pressure sensor, an electromagnetic clamp and a buzzer. The pressure sensor is used for sending a signal to the central processing unit; the central processing unit is used for receiving a signal of the pressure sensor, sending an instruction to the electromagnetic clamp and sending a signal to the buzzer; the buzzer is used for receiving signals of the central processing unit and then making buzzing sound, the central processing unit comprises a microcontroller, a timer and an electromagnetic valve, and the microcontroller writes codes through a development environment and a programming language and is used for reading pressure values, controlling the electromagnetic clamp and the buzzer and controlling the timer. The mode of regularly clamping and opening the ureter is adopted, the bladder is prevented from being excessively filled, a tension-free bladder is formed, and meanwhile bladder atrophy caused by continuous opening and drainage of the ureter can be avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to indwelling urinary catheter technical field, specifically is a kind of indwelling urinary catheter control system of automatic alarm. BACKGROUND

[0002] Indwelling urinary catheter is usually applied to: patients with coma and consciousness disorder who cannot urinate by themselves; patients with urethral stricture and severe BPH leading to urinary retention; patients with shock who need to indwell urinary catheter to strictly record water in and out; patients in preparation period of each perioperative period and postoperative anesthesia who have not woken up; patients with severe heart failure who need to strictly lie in bed; patients with long-term bedridden urinary incontinence leading to pressure injury or preventing pressure injury. According to the data statistics of the hospital visits for replacing urinary catheter in the past two years in the Fifth Affiliated Hospital of Zhengzhou University, a total of 360 people replaced urinary catheter, and all of them used 16-20 three-lumen latex / silicone urinary catheters. Among them, 30 people had non-expected catheter replacement or catheter removal due to catheter blockage or partial blockage, and the non-expected catheter replacement rate reached 8.3%. Indwelling urinary catheter is usually two-lumen urinary catheter and three-lumen urinary catheter, and the material of urinary catheter is generally silicone, natural latex and pure glue. Under normal circumstances, the normal value of intravesical pressure is 0-40 cmH20, when the intravesical pressure reaches 10 cmH20, the desire to urinate can be generated, and when the pressure reaches 20 cmH20, the uncontrollable desire to urinate can be generated.

[0003] In the prior art, the utility model with publication number CN202121672887.0 provides a urinary catheter alarm device, which comprises a shell and a catheter penetrating through the shell; a display assembly and an alarm assembly are arranged on the outer wall of the shell; a control assembly is arranged in the wall surface of the shell; an electric control valve and a flowmeter are arranged on the catheter in the shell; wherein the display assembly, the alarm assembly, the electric control valve and the flowmeter are electrically connected with the control assembly.

[0004] The urinary catheter alarm device can only alarm and prompt medical staff when the urine output of the patient is too low within 24 hours, but it cannot automatically clamp and open the urinary catheter. Therefore, the present application provides an automatic alarm indwelling urinary catheter control system to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing an automatic alarm indwelling urinary catheter control system to solve the problems raised in the background art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an automatic alarm indwelling urinary catheter control system, comprising:

[0007] The urinary tract automatic switch alarm includes a central processing unit, a pressure sensor, an electromagnetic clamp and a buzzer.

[0008] The pressure sensor is used to send signals to the central processing unit;

[0009] The central processing unit is used to send instructions to the electromagnetic clamp after receiving the pressure sensor signal, and is used to send signals to the buzzer;

[0010] The buzzer is used to emit a buzzing sound after receiving the central processing unit signal.

[0011] Preferably, the central processing unit includes a microcontroller, a timer and an electromagnetic valve.

[0012] Preferably, the microcontroller writes code through a development environment and a programming language, which is used to read pressure values, control the electromagnetic clamp and the buzzer, and control the timer.

[0013] Preferably, the pressure sensor is connected to an analog input port for reading pressure values, and the output pin of the pressure sensor is connected to the analog input pin of the microcontroller.

[0014] Preferably, the electromagnetic valve is connected to a digital output port of the microcontroller for controlling the on-off state of the electromagnetic clamp, one end of the electromagnetic valve is connected to a power supply, the other end is connected to the collector of an NPN transistor, the base of the transistor is connected to a digital output pin of the microcontroller, a current limiting resistor is connected in series between the base of the transistor and the ground, and the emitter of the transistor is grounded.

[0015] Preferably, the buzzer is connected to another digital output port of the microcontroller for controlling the alarm state of the buzzer, one end of the passive buzzer is connected to a power supply, the other end is connected to the collector of an NPN transistor, the base of the transistor is connected to another digital output pin of the microcontroller, a current limiting resistor is connected in series between the base of the transistor and the ground, and the emitter of the transistor is grounded.

[0016] Preferably, the timer is connected to the timer port of the microcontroller for timing, and the ground wire of the microcontroller is connected to the ground wire of the power supply.

[0017] Preferably, the automatic alarm indwelling urinary catheter control system comprises the following steps:

[0018] S1, connect the three-cavity urinary catheter urine drainage port to the drainage bag, and connect the urinary automatic switch alarm at a distance of 3 cm from the distal end of the catheter to the bifurcation;

[0019] S2, when there is a large amount of urine and the pressure reaches or exceeds a threshold value (a certain value in 10-20 cmH2O), the urinary automatic switch alarm opens the urinary switch, and the urine is discharged into the drainage bag. As the urine is discharged into the drainage bag, the pressure in the urinary catheter gradually decreases, and when it is lower than a certain threshold value (a certain value in 1-5 cmH2O), the urinary automatic switch alarm closes the urinary switch;

[0020] Preferably, when the intravesical pressure rises to 15cmH20, the pressure sensor sends a signal to the central processor, and the electromagnetic clamp opens the urinary catheter after receiving the instruction.

[0021] S3, if the urine in the drainage bag is not emptied in time, when the urine still cannot be automatically discharged into the urine bag after the urine automatic switch alarm opens, the pressure threshold continues to exceed the threshold (a certain value in 10-20cmH2O) within 3-5 minutes, the buzzer starts to alarm, prompting to replace the drainage bag or empty the urine in the drainage bag; when the urine pressure continues to approach or be lower than the threshold (a certain value in 1-5cmH2O) within 2 hours, the buzzer alarms, prompting oliguria, anuria or urinary tube blockage.

[0022] Compared with the prior art, the utility model has the beneficial effects that:

[0023] 1, the way of adopting the timing clamping-open urinary catheter can avoid overfilling of the bladder, form the tensionless bladder, and can also avoid the continuous open drainage of the urinary catheter leading to the atrophy of the bladder. BRIEF DESCRIPTION OF DRAWINGS

[0024] Fig. 1 It is the system diagram of the utility model;

[0025] Fig. 2 It is the circuit diagram of the utility model. DETAILED DESCRIPTION

[0026] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the protection scope of the utility model.

[0027] Please refer to Figs. 1-2 An automatic alarm indwelling urinary catheter control system, comprising:

[0028] The urine automatic switch alarm includes a central processor, a pressure sensor, an electromagnetic clamp and a buzzer.

[0029] The central processing unit is used to send instructions to the electromagnetic clamp after receiving the pressure sensor signal, and is used to send signals to the buzzer. The central processing unit includes a microcontroller, a timer, and a solenoid valve. The microcontroller writes code through a development environment and a programming language to read pressure values, control the electromagnetic clamp and the buzzer, and control the timer. The timer is connected to the timer port of the microcontroller for timing. The timer can be an internal timer of the microcontroller or a separate counter, etc. The ground of the microcontroller is connected to the ground of the power supply. The microprocessor can be selected from 51 single-chip microcomputer, STC, PIC, etc.

[0030] The pressure sensor is used to send signals to the central processing unit. The pressure sensor is connected to an analog input port for reading pressure values. The output pin of the pressure sensor is connected to the analog input pin of the microcontroller. The pressure sensor is a general pressure sensor.

[0031] The solenoid valve is connected to the digital output port of the microcontroller for controlling the on-off state of the electromagnetic clamp. One end of the solenoid valve is connected to the power supply (usually +VCC or +5V), and the other end is connected to the collector of an NPN transistor. The base of the transistor is connected to a digital output pin of the microcontroller, and a current limiting resistor (e.g. 1kΩ) is connected in series between the base and the ground of the transistor. The emitter of the transistor is connected to the ground.

[0032] The buzzer is used to emit a buzzing sound after receiving the signal of the central processing unit. The buzzer is connected to another digital output port of the microcontroller for controlling the alarm state of the buzzer. One end of the passive buzzer is connected to the power supply, and the other end is connected to the collector of an NPN transistor. The base of the transistor is connected to another digital output pin of the microcontroller, and a current limiting resistor (e.g. 1kΩ) is connected in series between the base and the ground of the transistor. The emitter of the transistor is connected to the ground (according to the specific model of the microcontroller, the specifications of the solenoid valve and the buzzer, select the appropriate transistor type and current limiting resistor value).

[0033] The automatic alarm indwelling urinary catheter control system includes the following steps:

[0034] S1, connect the three-lumen urinary catheter urine drainage port to the drainage bag, and connect the urinary automatic switch alarm at the distal end of the urinary catheter close to the bifurcation 3cm;

[0035] S2, when the urine is relatively large and the pressure reaches or exceeds a threshold value (a certain value in 10-20cmH2O), the urinary automatic switch alarm opens the urinary switch, and the urine is discharged into the drainage bag. As the urine is discharged into the drainage bag, the pressure in the urinary catheter gradually decreases, and when it is lower than a certain threshold value (a certain value in 1-5cmH2O), the urinary automatic switch alarm closes the urinary tract;

[0036] Preferably, when the intravesical pressure rises to 15cmH20, the pressure sensor sends a signal to the central processor, and the electromagnetic clamp opens the urinary catheter after receiving the instruction. When the intravesical pressure is lower than 5cmH20, the electromagnetic clamp closes the urinary catheter;

[0037] S3, if the urine in the drainage bag is not emptied in time, when the urine still cannot be automatically drained into the urine bag after the urine way automatic switch alarm opens, the pressure threshold continues to exceed the threshold (a certain value in 10-20cmH2O) within 3-5 minutes, the buzzer starts to alarm, prompting to replace the drainage bag or empty the urine in the drainage bag; when the urine way pressure continues to approach or be lower than the threshold (a certain value in 1-5cmH2O) within 2 hours, the buzzer alarms, prompting oliguria, anuria or urinary tube blockage.

[0038] The urinary catheter is closed and opened in a timing mode, so that the bladder is not overfilled, the tensionless bladder is formed, and the bladder atrophy caused by the continuous opening of the urinary catheter for drainage is avoided.

[0039] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. An automatic alarm indwelling urinary tube control system characterized by comprising: The application relates to an automatic urine path switch alarm device, which comprises a central processor, a pressure sensor, an electromagnetic clamp and a buzzer. The pressure sensor is used for sending a signal to the central processor. The central processor is used for sending an instruction to the electromagnetic clamp after receiving the signal of the pressure sensor and for sending a signal to the buzzer. When the urine is relatively much and the pressure reaches or exceeds a certain value in a threshold range of 10-20 cmH2O, the automatic urine path switch alarm device opens the urine path switch, and the urine is discharged into the drainage bag; with the urine being discharged into the drainage bag, the pressure in the urine tube gradually decreases, and when the pressure is lower than a certain value in a threshold range of 1-5 cmH2O, the automatic urine path switch alarm device is closed. When the pressure in the bladder rises to 15 cmH2O, the pressure sensor sends a signal to the central processor, and the electromagnetic clamp opens the urine tube after receiving the instruction; when the pressure in the bladder is lower than 5 cmH2O, the electromagnetic clamp clamps the urine tube. The buzzer is used for emitting a buzzing sound after receiving the signal of the central processor; if the urine in the drainage bag is too much and cannot be discharged into the urine bag in time, when the pressure threshold continuously exceeds a certain value in the threshold range of 10-20 cmH2O within 3-5 minutes, the buzzer starts to alarm, prompting to replace the drainage bag or to empty the urine in the drainage bag; when the urine pressure continuously approaches or is lower than a certain value in the threshold range of 1-5 cmH2O within 2 hours, the buzzer alarms, prompting oliguria, anuria or urine tube blockage.

2. The automatically alarming indwelling urinary catheter control system according to claim 1, characterized by: The central processor comprises a microcontroller, a timer and an electromagnetic valve.

3. The automatically alarming indwelling urinary catheter control system according to claim 2, characterized in that: The microcontroller is used for reading the pressure value, controlling the electromagnetic clamp and the buzzer and controlling the timer by developing an environment and a programming language to compile a code.

4. The automatically alarming indwelling urinary catheter control system according to claim 1, characterized by: The pressure sensor is connected with an analog input port for reading the pressure value, and an output pin of the pressure sensor is connected with an analog input pin of the microcontroller.

5. The automatically alarming indwelling urinary catheter control system according to claim 2, characterized in that: The electromagnetic valve is connected with a digital output port of the microcontroller for controlling the switch state of the electromagnetic clamp, one end of the electromagnetic valve is connected with a power supply, the other end is connected with a collector electrode of an NPN transistor, a base electrode of the transistor is connected with a digital output pin of the microcontroller, a current-limiting resistor is connected in series between the base electrode and the ground, and an emitter electrode of the transistor is grounded.

6. The automatically alarming indwelling urinary catheter control system of claim 1, wherein: The buzzer is connected with another digital output port of the microcontroller for controlling the alarm state of the buzzer, one end of the passive buzzer is connected with a power supply, the other end is connected with a collector electrode of an NPN transistor, a base electrode of the transistor is connected with another digital output pin of the microcontroller, a current-limiting resistor is connected in series between the base electrode and the ground, and an emitter electrode of the transistor is grounded.

7. The automatically alarming indwelling urinary catheter control system of claim 2, wherein: The timer is connected with a timer port of the microcontroller for timing, and a ground wire of the microcontroller is connected with a ground wire of the power supply.

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