CN216495268U - Multifunctional blood pressure simulator - Google Patents
Multifunctional blood pressure simulator Download PDFInfo
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- CN216495268U CN216495268U CN202122551457.XU CN202122551457U CN216495268U CN 216495268 U CN216495268 U CN 216495268U CN 202122551457 U CN202122551457 U CN 202122551457U CN 216495268 U CN216495268 U CN 216495268U
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Abstract
The utility model belongs to the technical field of mechanical detection and maintenance, and discloses a multifunctional blood pressure simulation device. Comprises a shell; an electromagnetic pushing unit and a main control module are arranged in the shell; the main control module is connected with an electromagnetic pushing unit, the electromagnetic pushing unit is connected with a cylinder, a position sensor is arranged on a push rod of the electromagnetic pushing unit, and the air outlet end of the cylinder is connected with an electromagnetic valve B; the master control module is respectively connected with the electromagnetic valve A, the electromagnetic valve B, the slow release valve, the pressure measuring unit, the pressure generating module and the audio module; the electromagnetic valve A is connected with a slow release valve, and one end of the slow release valve is communicated with the atmosphere; the gas output end of the molding module is connected with a one-way valve; the audio module is connected with the sound cavity. The whole machine is small and portable in size and low in power consumption, and the rechargeable lithium battery is used, so that the independent service time of more than 4 hours is provided. And the field detection requirement is simplified.
Description
Technical Field
The utility model belongs to the technical field of mechanical detection and maintenance, and relates to a multifunctional blood pressure simulation device.
Background
The non-invasive (indirect) manometry is to measure a corresponding pressure value from the body surface by using the blood flow change system which occurs at the moment of opening the blood blockage and the pressure in the vessels, namely to detect the pulse change condition at the far side of the occlusive air sleeve at the moment of opening the blood blockage in the vessels. Common non-invasive automatic blood pressure measurement working modes are Korotkoff sound method, ultrasonic Doppler method, oscillometric method and the like.
The existing noninvasive blood pressure simulator in China has two technical starting points:
firstly, the human body arm is simulated, the simulated arm is greatly different from the actual human arm, and the realization principle of the simulated blood pressure value and the measured electronic sphygmomanometer cannot be directly transferred; one is to simulate secondary effects in the non-invasive blood pressure measurement process, such as the generation of korotkoff sounds (korotkoff sounds) or the variation of gas pressure in the measurement cuff caused by heartbeat (oscillography). In the prior art, a device for simultaneously realizing the simulation capability of the Korotkoff sound method and the oscillography method is not available.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the background technology and provide a multifunctional blood pressure simulator, which realizes the multifunctional blood pressure simulator capable of integrating multiple functions of oscillometric blood pressure simulation, Korotkoff sound simulation, pressure source, pressure gauge, leakage rate measurement, pressure relief measurement and the like.
The technical scheme adopted by the utility model for solving the technical problems is as follows: a multifunctional blood pressure simulator comprises a shell; an electromagnetic pushing unit, a position sensor, an air cylinder, an electromagnetic valve A, an electromagnetic valve B, a slow release valve, a pressure measuring unit, a pressure making module, a one-way valve, an audio module, a sound cavity, a main control module, a human-computer interface, a power supply module and an output interface are arranged in the shell; the main control module is connected with the electromagnetic pushing unit and pushes the electromagnetic pushing unit to move; when the electromagnetic pushing unit moves, the air cylinder is pushed to move; the movable grating sheet of the open type transmission linear grating position sensor is firmly attached to the push rod of the electromagnetic pushing unit and moves along with the electromagnetic pushing unit, and the position sensor returns relevant position information to the main control module; the push rod part of the cylinder is connected to the electromagnetic push unit, and the air outlet end of the cylinder is connected with the electromagnetic valve B; the master control module is respectively connected with the electromagnetic valve A, the electromagnetic valve B and the slow release valve; the electromagnetic valve A is connected with a slow release valve, and one end of the slow release valve is communicated with the atmosphere; the main control module is connected with the pressure measurement unit and converts an electric signal corresponding to the gas pressure of the pressure measurement unit into a digital quantity; the main control module is connected with the molding module, and the gas output end of the molding module is connected with the one-way valve; the main control module is connected with the audio module, and the audio module is connected with the sound cavity; the electromagnetic valve A, the electromagnetic valve B, the one-way valve, the pressure measuring unit and the output interface are connected through communicated pipelines; the main control module is connected with a human-computer interface; the device is also provided with a power module.
The power supply module is respectively connected with the main control module, the electromagnetic pushing unit, the pressure generating module, the pressure measuring unit, the audio module and the human-computer interface.
The electromagnetic pushing unit includes a moving-coil pusher. The moving-coil type driver is composed of a thin-wall aluminum hollow cup, an oxygen-free copper moving coil wound on the thin-wall aluminum hollow cup, a neodymium-iron-boron strong magnet, a shell made of surrounding iron and a push rod bonded with a transmission type grating sheet, and the actual principle of the moving-coil type driver is the same as that of a moving-coil type loudspeaker.
The position sensor is composed of an open type transmission linear grating sensor and a matched counting circuit.
The whole shell of the device is an aluminum alloy shell with the size of 6cm by 8cm by 25cm, and the upper part of the shell is provided with a sound coupling cavity.
The main control module is respectively connected with the human-computer interface, the electromagnetic pushing unit, the electromagnetic valve A, the electromagnetic valve B, the slow release valve, the position sensor, the pressure measurement and measurement unit, the pressure generating module and the audio module.
A single chip microcomputer is arranged in the main control module.
The pressure detection unit includes a pressure sensor.
The front side of the outer part of the shell is provided with a display screen and a key. And a power interface, an output interface and a power switch are arranged on the back of the outer part of the shell.
Further, the cuff is provided on the outside of the housing of the device in a wrapping manner.
Furthermore, the display screen is an OLED display screen.
The utility model provides a multifunctional blood pressure simulation device, which specifically comprises the following working methods:
to not having the dynamic blood pressure simulation process of wound, will be surveyed blood pressure measuring device, winding sleeve area, utility model output interface on the casing through three way connection and link together, be surveyed blood pressure measuring device and to sleeve area and device pressurization. The master control module controls the electromagnetic valve A to be closed, the electromagnetic valve B to be opened, the molding module does not act, and the pressure measuring unit monitors the pressure change in the pipeline in real time. According to the pressure measured by the pressure measuring unit, the moving coil type pusher of the electromagnetic pushing unit pushes the air cylinder to move, and the main control module controls the electromagnetic pushing unit to produce simulated pressure waves with controllable time intervals and pressure change waveforms by combining the information of the position sensor. The device produces different simulated pressure waves and plays different simulated Korotkoff sounds at different time and different pressure by combining the oscillometric method and the Korotkoff sound method measuring principle, thereby realizing the function of simulating the pressure waves and the Korotkoff sounds of the non-invasive blood pressure. And the Korotkoff sound simulation function can be closed according to the actual situation, and only the oscillography simulation function is provided. One premise for realizing simultaneous simulation of pressure waves and Korotkoff sounds here is that the mechanical structure simulating the pressure waves generates enough small noise without introducing too much interference to the simulation process. Compared with the motor scheme in the prior art, the electromagnetic pushing unit has the advantages of obvious low noise.
For the pressure source function of the device, the master control module controls the electromagnetic valve A to be closed, the electromagnetic valve B to be closed all the time, the molding module acts, and the pressure measuring unit monitors the pressure value change in the pipeline in real time. The device uses a fuzzy control method, and when the pressure value is near a set value, the molding module is closed, and the electromagnetic valve A is closed. When the pressure value is lower than a set value by a certain value, the pressure making module works, the electromagnetic valve A is closed (the electromagnetic valve A is positioned at the front end of the slow release valve and used for reducing the gas leakage rate), and the pressure making module is closed until the pressure value is close to the set value. When the pressure value is higher than a set value by a certain value, the main control module closes the pressure generating module, controls the opening ratio of the slow release valve according to the pressure value, and opens the electromagnetic valve A until the pressure value is close to the set value, and closes the electromagnetic valve A.
For the pressure gauge function of the device, the master control module controls the electromagnetic valve A to be closed and the electromagnetic valve B to be closed, and the pressure measuring unit monitors and displays the pressure value in the pipeline in real time. And for the leakage rate measuring function of the device, the electromagnetic valve A is closed, the electromagnetic valve B is closed, the molding module acts until the pressure in the pipeline reaches a set value and then is closed, the pressure measuring unit acquires the pressure value in the pipeline in real time, and the leakage rate is calculated according to the variable quantity of the pressure value in the pipeline at time intervals.
The multifunctional blood pressure simulator provided by the utility model can be applied to the non-invasive blood pressure function test and maintenance of electronic sphygmomanometers and medical multi-parameter monitors used by various medical institutions. The utility model can be applied to medical measurement, and can carry out the detection and the test of the noninvasive blood pressure function of the electronic sphygmomanometer and the multi-parameter medical monitor used by the medical institution; the utility model can also be applied to the equipment maintenance departments of medical institutions and the like to test and maintain the noninvasive blood pressure function of the electronic sphygmomanometer and the multi-parameter medical monitor used by the unit.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model aims at the noninvasive measurement electronic sphygmomanometer adopting the oscillography at present and the noninvasive blood pressure measurement part of the medical multi-parameter monitor and the electronic sphygmomanometer adopting the Korotkoff sound auscultation method. The utility model provides a multifunctional blood pressure simulator. The multifunctional blood pressure simulator provided by the utility model realizes a multifunctional blood pressure simulator which can integrate multiple functions of oscillography blood pressure simulation, Korotkoff sound simulation, pressure source, pressure gauge, leakage rate measurement, pressure relief measurement and the like. The whole machine is small and portable in size and low in power consumption, and the rechargeable lithium battery is used, so that the independent service time of more than 4 hours is provided. And the field detection requirement is simplified.
Drawings
The utility model is further illustrated with reference to the following figures and examples:
fig. 1 is a schematic diagram of the internal structure of a multifunctional blood pressure simulator according to the present invention.
Fig. 2 is a structural view of the electromagnetic thrusting unit.
Fig. 3 is a front view of a housing of the multifunctional blood pressure simulator of the present invention.
Fig. 4 is a rear view of a housing of the multifunctional blood pressure simulator of the present invention.
Fig. 5 is a top view of a housing of a multifunctional blood pressure simulator in accordance with the present invention.
In the figure, 1, an outer surrounding iron shell, 2, a thin-wall aluminum hollow cup, 3, neodymium iron boron strong magnets, 4, a push rod, 5, a transmission type grating sheet, 6, a front panel, 7, a display screen, 8, keys, 9, a back panel, 10, a power interface, 11, an output interface, 12, a power switch, 13, an upper panel, 14, a sound coupling cavity, 15, a man-machine interface, 16, a main control module, 17, a power module, 18, an audio module, 19, a sound cavity, 20, a one-way valve, 21, a slow release valve, 22, an electromagnetic valve A, 23, an electromagnetic pushing unit, 24, a position sensor, 25, an air cylinder, 26, an electromagnetic valve B, 27, a pressure measuring unit and 28, a pressure manufacturing module are arranged.
Detailed Description
The utility model is further described below with reference to the drawings attached to the specification, but the utility model is not limited to the following examples.
Example 1
A multifunctional blood pressure simulator, as shown in fig. 1-5, comprising a housing; an electromagnetic pushing unit 23, a main control module 16, a man-machine interface 15 and an output interface 11 are arranged in the shell; the main control module 16 is connected with an electromagnetic pushing unit 23, the electromagnetic pushing unit 23 is connected with an air cylinder 25, a position sensor 24 is arranged on a push rod 4 of the electromagnetic pushing unit 23, and an air outlet end of the air cylinder 25 is connected with an electromagnetic valve B26; the main control module 16 is respectively connected with the electromagnetic valve A22, the electromagnetic valve B26, the slow release valve 21, the pressure measuring unit 27, the pressure generating module 28 and the audio module 18; the electromagnetic valve A22 is connected with the slow release valve 21, and one end of the slow release valve 21 is communicated with the atmosphere; the gas output end of the pressure generating module 28 is connected with a one-way valve 20; the audio module 18 is connected with the sound cavity 19; the electromagnetic valve A22, the electromagnetic valve B26, the one-way valve 20, the pressure measuring unit 27 and the output interface 11 are connected through communicated pipelines; the main control module 16 is connected with the human-computer interface 15; the device is also provided with a power supply module 17.
The power module 17 is respectively connected with the main control module 16, the electromagnetic pushing unit 23, the pressure generating module 28, the pressure measuring unit 27, the audio module 18 and the human-computer interface 15.
The electromagnetic pushing unit 23 includes a moving coil pusher. The moving-coil type propeller consists of a thin-wall aluminum hollow cup 2, an oxygen-free copper moving coil wound on the thin-wall aluminum hollow cup 2, a neodymium-iron-boron strong magnet 3, a shell 1 made of surrounding iron and a push rod 4 bonded with a transmission type grating sheet 5, and the actual principle of the moving-coil type propeller is the same as that of a moving-coil type loudspeaker. The electromagnetic pushing unit 23 works in cooperation with a 2mL capacity microcylinder 25.
The position sensor 24 is an open type transmission linear grating sensor and a matching counting circuit.
The shell of the integral shell of the device is an aluminum alloy shell with the size of 6cm by 8cm by 25cm, and the upper part of the shell is provided with a sound coupling cavity 14.
The main control module 16 is respectively connected with the human-computer interface 15, the electromagnetic pushing unit 23, the electromagnetic valve a 22, the electromagnetic valve B26, the slow release valve 21, the position sensor 24, the pressure measurement measuring unit 27, the pressure generating module 28 and the audio module 18.
A single chip microcomputer is arranged in the main control module 16.
The pressure detection unit 27 includes a pressure sensor.
And the front surface of the outer part of the shell is provided with a display screen 7 and a key 8. And a power interface 10, an output interface 11 and a power switch 12 are arranged on the back of the outer part of the shell.
Further, the cuff is provided on the outside of the housing of the device in a wrapping manner.
Further, the display screen 7 is an OLED display screen.
The outer surrounding iron case 1 is used for wrapping the magnet to prevent magnetic leakage and enhance the magnetic field intensity of the magnet.
The electromagnetic pushing unit 23 includes a moving coil type pusher and a 2mL capacity microcylinder. The moving-coil type propeller consists of a thin-wall aluminum hollow cup 2, an oxygen-free copper moving coil wound on the thin-wall aluminum hollow cup 2, a neodymium-iron-boron strong magnet 3, a shell 1 made of surrounding iron and a push rod 4 bonded with a transmission type grating sheet 5, and the actual principle of the moving-coil type propeller is the same as that of a moving-coil type loudspeaker.
The position sensor 24 is an open type transmission linear grating sensor and a matching counting circuit.
The electromagnetic valve is formed by a low-leakage normally-closed one-way electromagnetic valve and a driving unit ULN2003, and the main control module 16 is driven in an optical coupling isolation mode. The slow release valve 21 is a proportional air release valve driven by a voltage-controlled current source, and the air release rate of the valve is controlled by controlling the magnitude of the driving current. The pressure generating module 28 is composed of a micro diaphragm pump and a drive ULN2003, the main control module 16 is driven in an optical coupling isolation mode, and a controllable pressure generating source is provided for the device by matching with the one-way valve 20.
The pressure measuring unit 27 is specifically a DS-13A-010G gauge pressure sensor chip adopting a 1.5mA constant current driving mode, the measuring range is 68.9kPa, a pressure conversion signal after amplification and filtering enters a 16-bit analog-to-digital converter ADS8341 with 100k conversion speed for processing, and the pressure quantity is converted into a digital quantity by matching with a precise 2.5V voltage reference ADR 03.
The audio module 18 is specifically composed of a voice module WT2003M02 matched with a 1W full-frequency speaker, wherein korotkoff sound audio files collected under different body states are stored in the voice module, and the played korotkoff sound is coupled to a measuring pipeline of the sphygmomanometer to be measured by being matched with a sound coupling cavity 14 arranged at the upper part of the shell.
The main control module 16 specifically adopts ATMEGA128A to drive and control the functions of the human-computer interface (OLED display 7, key 8), the analog-to-digital conversion ADC, the digital-to-analog conversion DAC, the electromagnetic valve, the on-off control of the pressure generating module 28, and the like, so as to realize power management. The power module 17 provides isolated digital circuit and analog circuit working voltage, electromagnetic pushing unit 23 working voltage, electromagnetic valve, slow release valve 21 and other module and unit working voltage, and has built-in 12V lithium battery and matched charging management circuit.
When the multifunctional blood pressure simulator provided by the utility model is used for detecting the non-invasive blood pressure functions of a non-invasive blood pressure instrument and a multi-parameter medical monitor, firstly, the tested equipment, the cuff wound on the shell of the multifunctional blood pressure simulator and the output interface are connected together through the three-way joint. And setting parameters to be simulated, pressurizing the sleeve belt and the device by the tested equipment, finishing the simulation process by the device, and judging the performance of the tested equipment by interpreting the simulation parameters of the tested equipment and the device.
Although the utility model has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the utility model. Accordingly, such modifications and improvements are intended to be within the scope of the utility model as claimed.
Claims (9)
1. A multifunctional blood pressure simulator is characterized by comprising a shell; an electromagnetic pushing unit (23), a main control module (16), a man-machine interface (15) and an output interface (11) are arranged in the shell; the main control module (16) is connected with an electromagnetic pushing unit (23), the electromagnetic pushing unit (23) is connected with a cylinder (25), a position sensor (24) is arranged on a push rod (4) of the electromagnetic pushing unit (23), and an air outlet end of the cylinder (25) is connected with an electromagnetic valve B (26); the main control module (16) is respectively connected with the electromagnetic valve A (22), the electromagnetic valve B (26), the slow release valve (21), the pressure measuring unit (27), the pressure generating module (28) and the audio module (18); the electromagnetic valve A (22) is connected with the slow release valve (21), and one end of the slow release valve (21) is communicated with the atmosphere; the gas output end of the pressure generating module (28) is connected with a one-way valve (20); the audio module (18) is connected with the sound cavity (19); the electromagnetic valve A (22), the electromagnetic valve B (26), the one-way valve (20), the pressure measuring unit (27) and the output interface (11) are connected through communicated pipelines; the main control module (16) is connected with the human-computer interface (15); the device is also provided with a power supply module (17).
2. The multifunctional blood pressure simulator according to claim 1, wherein said power module (17) is connected to the main control module (16), the electromagnetic pushing unit (23), the pressure generating module (28), the pressure measuring unit (27), the audio module (18) and the human-machine interface (15), respectively.
3. The multifunctional blood pressure simulator according to claim 2, wherein the electromagnetic pushing unit (23) comprises a moving coil type pusher; the moving-coil type pusher consists of a thin-wall aluminum hollow cup (2), an oxygen-free copper moving coil wound on the thin-wall aluminum hollow cup (2), a neodymium-iron-boron strong magnet (3), a shell (1) which is externally surrounded by iron, and a push rod (4) bonded with a transmission type grating sheet (5).
4. The multifunctional blood pressure simulator of claim 2, wherein the shell of the device is an aluminum alloy shell, and the upper part of the shell is provided with a sound coupling cavity (14).
5. The multifunctional blood pressure simulator according to claim 2, wherein a single chip microcomputer is provided in the main control module (16).
6. A multifunctional blood pressure simulator according to claim 2, wherein said pressure measuring unit (27) comprises a pressure sensor.
7. The multifunctional blood pressure simulator of claim 2, wherein said housing has a display (7) and keys (8) on the outer front surface; the back of the outer part of the shell is provided with a power interface (10), an output interface (11) and a power switch (12).
8. The multifunctional blood pressure simulator of claim 2 wherein said housing of said device is externally wrapped with a cuff.
9. The multifunctional blood pressure simulator according to claim 7, wherein said display screen (7) is an OLED display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122551457.XU CN216495268U (en) | 2021-10-22 | 2021-10-22 | Multifunctional blood pressure simulator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122551457.XU CN216495268U (en) | 2021-10-22 | 2021-10-22 | Multifunctional blood pressure simulator |
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| Publication Number | Publication Date |
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| CN216495268U true CN216495268U (en) | 2022-05-13 |
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| CN202122551457.XU Active CN216495268U (en) | 2021-10-22 | 2021-10-22 | Multifunctional blood pressure simulator |
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| CN (1) | CN216495268U (en) |
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2021
- 2021-10-22 CN CN202122551457.XU patent/CN216495268U/en active Active
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