Programmable portable arterial blood pressure transducer adapter

Abstract

The utility model discloses a kind of programmable portable arterial blood pressure transducing transfer, it is related to the technical field of medical devices, solve the problem that traditional arterial blood pressure transducer exists in clinical operation scene Operation is complicated, limit the use convenience of clinical medical staff, comprising: hardware overall component, pressure sensor and tee, hardware overall component is by one AFRC-D1302 micro steering gear, one 1620 disposable blood pressure sensor interface, one power supply circuit, one stm32f103 single-chip microcomputer minimum system circuit, three buttons, three LED state indicator light composition.And form perfect central chip control function;The utility model realizes the drive of rotary motor and the function of automatic calibration '0' by central control panel, to save manpower, with low cost, portable operation, reusable and various advantages such as multiple.

Description

Technical Field

[0001] This utility model relates to the technical field of medical devices, and in particular to a programmable portable arterial blood pressure transducer. Background Technology

[0002] Traditional technical solutions mainly consist of simple arterial transducers containing a 1620 disposable blood pressure sensor. In use, the vascular end is connected to the blood pressure sensor, and the monitoring end is connected to the monitor. Through this interconnected connection, real-time monitoring of the patient's arterial blood pressure can be achieved.

[0003] Traditionally, arterial blood pressure transducers require manual connection to both the patient's blood vessel and the monitor's signal input. Furthermore, the need for manual zero-calibration limits the portability of perioperative arterial blood pressure monitoring, primarily in the following ways: 1. When the arterial transducer needs zero-calibration, one side of the transducer must be at the level of the patient's heart, and the three-way valve must be manually rotated to the air position while an assistant presses the zero-calibration button on the monitor; 2. During arterial blood gas analysis, the assistant must rotate the three-way valve of the arterial transducer to the air position and manually draw arterial blood for analysis. Given operations 1 and 2, in some clinical scenarios, the following issues arise:

[0004] 1. In actual clinical practice, there are inconveniences, cumbersome procedures, and a waste of human resources.

[0005] 2. Manual calibration of "0" and manual connection limit the ease of use for clinical medical staff. Utility Model Content

[0006] To address the issues of cumbersome operation and limited ease of use for clinical medical personnel in traditional arterial blood pressure transducers, the present invention aims to provide a programmable portable arterial blood pressure transducer that uses a central control panel to drive a rotary motor and automatically calibrate to '0'.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A programmable portable arterial blood pressure transducer includes: an integrated hardware component 1, a pressure sensor 2, and a three-way valve 3. The three-way valve 3 is provided with a monitoring end, an air end, and a blood vessel end. The pressure sensor 2 is installed at the monitoring end of the three-way valve 3. The integrated hardware component 1 includes: a micro servo motor and a microcontroller. The microcontroller is used to control the micro servo motor, which is used to drive the three-way valve knob of the three-way valve 3 to rotate, thereby enabling the three-way valve 3 to be in three different connection modes.

[0009] The aforementioned programmable portable arterial blood pressure transducer further includes: a monitor 4 and a pressure sensor cable. The hardware component 1 is equipped with a blood pressure sensor interface and a signal output interface. The blood pressure sensor interface is connected to the pressure sensor 2 through a pressure sensor cable, and the signal output interface is connected to the monitor 4 through another pressure sensor cable.

[0010] The aforementioned programmable portable arterial blood pressure transducer further includes: a drip tube 6 and an anticoagulant saline solution 7, one end of the drip tube 6 being connected to the anticoagulant saline solution 7, and the other end of the drip tube 6 being connected to the monitoring end of the three-way valve 3.

[0011] In the aforementioned programmable portable arterial blood pressure transducer, the vascular end of the three-way valve 3 is connected to the patient's blood vessel.

[0012] The aforementioned programmable portable arterial blood pressure transducer further includes: a valve 5, which is installed on a drip tube 6 and is used to regulate the flow rate of saline solution in the drip tube 6.

[0013] The aforementioned programmable portable arterial blood pressure transducer has three buttons on its hardware component 1. All three buttons are connected to a microcontroller via circuitry and are used to control the operation of a micro servo motor to switch the connection mode of the three-way valve 3.

[0014] The aforementioned programmable portable arterial blood pressure transducer includes three indicator lights on the hardware component 1. All three indicator lights are connected to the microcontroller via circuitry, and are used to display the three connection modes of the three-way valve 3.

[0015] The aforementioned programmable portable arterial blood pressure transducer includes a power supply circuit within the overall hardware component 1. This power supply circuit is used to connect to an external circuit and to supply power to the micro servo motor and the microcontroller.

[0016] Because this utility model employs the aforementioned technology, it has the following positive effects compared to existing technologies:

[0017] (1) This utility model realizes the driving of the rotary motor and the function of automatic '0' through the central control panel, thereby saving manpower and having many advantages such as low cost, easy operation and reusability. Attached Figure Description

[0018] Figure 1 This is a real-world application diagram of a programmable portable arterial blood pressure transducer according to this utility model.

[0019] Figure 2 This is a power circuit diagram of a programmable portable arterial blood pressure transducer according to this utility model.

[0020] Figure 3 This is a circuit diagram of the indicator light of a programmable portable arterial blood pressure transducer according to this utility model.

[0021] Figure 4 This is a key circuit diagram of a programmable portable arterial blood pressure transducer according to this utility model.

[0022] Figure 5 This is a circuit diagram of the MCU main controller of a programmable portable arterial blood pressure transducer according to this utility model.

[0023] Figure 6 This is a circuit diagram of a disposable blood pressure monitor for a programmable portable arterial blood pressure transducer according to this utility model.

[0024] Figure 7 This is a micro servo motor control circuit diagram of a programmable portable arterial blood pressure transducer according to this utility model.

[0025] Figure 8 This is a flowchart of the microcontroller source program for a programmable portable arterial blood pressure transducer of this utility model running in an STM32F103 microcontroller.

[0026] In the attached diagram: 1. Overall hardware components; 2. Pressure sensor; 3. T-junction; 4. Monitor; 5. Valve; 6. Drip tube; 7. Anticoagulant saline solution. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0028] Please refer to Figures 1 to 8 The diagram illustrates a programmable portable arterial blood pressure transducer. The overall hardware components consist of an AFRC-D1302 micro servo motor, a 1620 disposable blood pressure sensor interface, a power supply circuit, an STM32F103 microcontroller minimum system circuit, three buttons (KEY1, KEY2, and KEY3), and three LED status indicators. This forms a complete central chip control function.

[0029] Furthermore, in a preferred embodiment, the AFRC-D1302 micro servo motor provides rotational power to drive the three-way knob to rotate at any angle set in the program. In this invention, there are three rotation angles: 0°, 90°, and 180°. 0° corresponds to the initial state, denoted as State 1, in which the servo motor angle is 0 degrees, and both the air and blood vessel ends are not connected. 90° corresponds to the calibration state, denoted as State 2, in which the servo motor angle is 90 degrees, the air vessel end is connected, and calibration is performed. 180° corresponds to the recording state, denoted as State 3, in which the servo motor angle is 180 degrees, the blood vessel end is connected, and data is recorded. The servo motor is controlled using the PWM output of a microcontroller, and the PWM output pin of the microcontroller is PB5.

[0030] Furthermore, in a preferred embodiment, the present invention is provided with a 1620 disposable blood pressure sensor interface. The present invention serves as an external device for a medical 1620 disposable blood pressure sensor. By connecting to the 1620 blood pressure sensor through this interface circuit, the corresponding voltage value of the sensor can be read and converted into the corresponding blood pressure value, which is then transmitted to the display for display.

[0031] Furthermore, in a preferred embodiment, the power supply circuit mainly uses an LP5907LDO and its peripheral circuits to convert the power supply voltage into a 3.3V DVDD voltage, thereby serving as the power supply for the STM32F103 microcontroller circuit, the LED indicator circuit, and the button circuit.

[0032] Furthermore, in a preferred embodiment, the main control MCU is selected as an STM32F103 microcontroller. The STM32F103 microcontroller serves as the minimum system circuit. It has PWM output functionality to control the rotation of a micro servo motor at any angle, a 12-bit on-chip ADC to calculate the output voltage of the blood pressure sensor, multiple external interrupt interfaces for real-time button monitoring, and multiple I / O ports for controlling three LED indicators. An external 8MHz crystal oscillator is used as the clock circuit for the STM32F103.

[0033] Furthermore, in a preferred embodiment, the button circuit has three buttons, KEY1, KEY2, and KEY3. The pressed state of these three buttons controls the switching between corresponding states one, two, and three. They are respectively connected to the PA1, PA2, and PA3 pins of the microcontroller. In external interrupt mode, the pressing status of the three buttons can be monitored promptly and without omission. 0.1uF capacitors C3, C4, and C5 are used for button debouncing to prevent misjudgments caused by button mechanical bounce.

[0034] Furthermore, in a preferred embodiment, the LED status indicator circuit has three LEDs, one end of which is pulled up to the DVDD via a 1K resistor, and the other end is connected to the control pin of the microcontroller. The three LEDs are LED1, LED2, and LED3, and their colors are blue, green, and red, respectively. Only one LED can be lit at a time, and the three colors correspond to state one, state two, and state three, respectively.

[0035] The above are merely preferred embodiments of the present invention and are not intended to limit the implementation methods and protection scope of the present invention.

[0036] Based on the above, this utility model also has the following embodiments:

[0037] In a further embodiment of this utility model, when used, as follows: Figure 3 As shown, first connect the vascular end to the blood pressure sensor and the monitoring end to the monitor. This interconnected connection enables real-time monitoring of the patient's arterial blood pressure. Press the 'Lock' button to connect the three-way valve to the slot (e.g., Figure 2 As shown, after the connection is established, the system clock is initialized. Pressing the KEY3 button initializes all hardware modules; the servo rotates 0°, and neither air nor blood conduction is possible, with a blue light illuminated. Pressing the KEY1 button (reset to '0' button) rotates the servo 90°, switching the three-way valve to the air end, with a green light illuminated. At this time, the 1620 disposable blood pressure sensor records the pressure value for 10 seconds in real time, performs averaging, and then triggers the monitor's calibration and zeroing settings. Pressing the KEY2 button rotates the servo 180°, switching the three-way valve to the blood vessel end, with a red light illuminated. At this time, the pressure value recorded by the 1620 disposable blood pressure sensor in real time is transmitted to the computer monitor screen. Monitoring ends; pressing the KEY3 button initializes all hardware modules; the servo rotates 0°, and neither air nor blood conduction is possible, with a blue light illuminated.

[0038] In a further embodiment of this utility model, the overall hardware components consist of an AFRC-D1302 micro servo motor, a 1620 disposable blood pressure sensor interface, a power supply circuit, an STM32F103 microcontroller minimum system circuit, three buttons, and three LED status indicator lights. This forms a complete central chip control function, thus saving manpower and offering advantages such as low cost, portability, and reusability. It effectively solves the inconvenience of manual calibration and manual connection.

[0039] In a further embodiment of this utility model, Figure 1 The enlarged view shows the arterial blood pressure transducer of this invention; the left side of the enlarged view shows the three-way valve 3. Figure 1 The upper end of the tee 3 shown is the monitoring end, and the pressure sensor 2 is installed on the monitoring end, as shown. Figure 1As shown, pressure sensor 2 is connected to the overall hardware component 1 via a pressure sensor cable; the lower end of the tee 3 is equipped with an air end and a blood vessel end. Figure 1 The lower end of the three-way valve 3 shown has an opening to the left for air supply, and an opening to the bottom for blood vessels. The blood vessel end is connected to the patient's blood vessels. A rotatable three-way valve knob is installed at the lower end of the three-way valve 3. Figure 1 The gear on the right side of the three-way knob represents a micro servo, which drives the three-way knob to rotate. Figure 1 The three-way knob shown has a rotation angle of 0°, and the protrusion of the three-way knob faces to the right, as... Figure 1 As shown, neither the air end nor the blood vessel end is connected to the monitoring end. The micro servo drives the three-way knob to rotate 90°, with the protrusion of the three-way knob facing upwards, connecting the air end to the monitoring end. The micro servo drives the three-way knob to rotate 180°, with the protrusion of the three-way knob facing left, connecting the blood vessel end to the monitoring end.

[0040] In a further embodiment of this utility model, the control flowchart of the microcontroller is as follows: Figure 3 As shown, after the programmable portable arterial blood pressure transducer is installed, the system clock is initialized, followed by the initialization of each hardware module. The servo motor rotates to 0°, and neither the air end nor the vascular end is connected to the monitoring end. Then, it checks if any key is pressed: if KEY1 is pressed, the green light illuminates; the servo motor rotates 90°, connecting the air end to the monitoring end, and pressure sensor 2 collects the monitoring value for 10 seconds and calculates the average value, then triggers the computer to calibrate and reset to 0; if KEY2 is pressed, the red light illuminates; the servo motor rotates 180°, connecting the vascular end to the monitoring end, and pressure sensor 2 continuously collects the monitoring value and sends it to the computer; if KEY3 is pressed, the blue light illuminates; the servo motor rotates back to 0°.

[0041] In a further embodiment of this utility model, the KEY2 key needs to be pressed after the KEY1 key operation is completed, so as to ensure the accuracy of the monitoring data. The KEY3 key can be pressed after either the KEY1 key or the KEY2 key operation is completed. The KEY3 key is used to reset the device so that the device can be reused.

[0042] The above are merely preferred embodiments of the present utility model and are not intended to limit the implementation methods and protection scope of the present utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A programmable portable arterial blood pressure transducer, characterized in that, include: The hardware components include (1), pressure sensor (2), and tee (3). The tee (3) is equipped with a monitoring end, an air end, and a blood vessel end. The pressure sensor (2) is installed on the monitoring end of the tee (3). The hardware components (1) include a micro servo motor and a microcontroller. The microcontroller is used to control the micro servo motor, which is used to drive the tee knob of the tee (3) to rotate, thereby enabling the tee (3) to be in three different connection modes.

2. The programmable portable arterial blood pressure transducer according to claim 1, characterized in that, Also includes: The monitor (4) and pressure sensor cable are provided. The hardware component (1) is provided with a blood pressure sensor interface and a signal output interface. The blood pressure sensor interface is connected to the pressure sensor (2) through a pressure sensor cable, and the signal output interface is connected to the monitor (4) through another pressure sensor cable.

3. The programmable portable arterial blood pressure transducer according to claim 1, characterized in that, Also includes: The drip tube (6) and the anticoagulant saline (7) are connected at one end and at the other end to the monitoring end of the three-way connector (3).

4. The programmable portable arterial blood pressure transducer according to claim 1, characterized in that, The vascular end of the three-way valve (3) is connected to the patient's blood vessel.

5. The programmable portable arterial blood pressure transducer according to claim 1, characterized in that, Also includes: A valve (5) is installed on a drip tube (6) and is used to regulate the flow rate of the saline solution in the drip tube (6).

6. The programmable portable arterial blood pressure transducer according to claim 1, characterized in that, The hardware component (1) has three buttons, all of which are connected to the microcontroller via circuits. All three buttons are used to control the operation of the micro servo motor to switch the connection mode of the three-way (3).

7. The programmable portable arterial blood pressure transducer according to claim 1, characterized in that, The hardware component (1) is equipped with three indicator lights. All three indicator lights are connected to the microcontroller through circuits. The three indicator lights are used to display the three connection modes of the three-way (3).

8. The programmable portable arterial blood pressure transducer according to claim 1, characterized in that, The hardware components (1) include a power supply circuit, which is used to connect with external circuits and to supply power to the micro servo motor and the microcontroller.

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