CN110339414A - A kind of pressure-detecting device and Medical Devices for blood purification system - Google Patents
A kind of pressure-detecting device and Medical Devices for blood purification system Download PDFInfo
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- CN110339414A CN110339414A CN201910572784.8A CN201910572784A CN110339414A CN 110339414 A CN110339414 A CN 110339414A CN 201910572784 A CN201910572784 A CN 201910572784A CN 110339414 A CN110339414 A CN 110339414A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/36—Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; Extra-corporeal blood circuits
- A61M1/3621—Extra-corporeal blood circuits
- A61M1/3639—Blood pressure control, pressure transducers specially adapted therefor
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Abstract
The present invention provides a kind of pressure-detecting device for blood purification system and the Medical Devices with the pressure-detecting device, pressure-detecting device includes electronic control unit, pressure sensor, pipe passage, liquid sensor and solenoid valve, pressure sensor, liquid sensor and solenoid valve are electrically connected with electronic control unit respectively, pipe passage has low level section, low level section is located at the lower section of the first end and second end of pipe passage in the vertical direction, the first end of pipe passage is connected with the pipeline of blood purification system, the second end of pipe passage is located on pressure sensor, liquid sensor is arranged in low level section, solenoid valve is arranged on pipe passage and between low level section and the second end of pipe passage.Pressure-detecting device for blood purification system detects the state of pressure protection cover while pressure detecting, and the structure of pressure-detecting device is simple and detection is accurate, cross-infection between patient is avoided, to ensure the safety of patient.
Description
Technical field
The present invention relates to medical instruments fields, and in particular to a kind of pressure-detecting device and tool for blood purification system
There are the Medical Devices of the pressure-detecting device.
Background technique
Blood purification system is the blood of patient to be drawn outside body, and remove some of them by a kind of purification device and cause
Disease substance achievees the purpose that treat disease to purify blood.During blood purification treatment, blood purification system needs
Pressure monitor is carried out to the different location of cardiopulmonary bypass in patients bloody path, to prevent from occurring bubble, blood coagulation, filter over the course for the treatment of
Phenomena such as damage, ensures the smooth development of blood purification treatment.
The extracorporeal circulation blood circuit of general blood purification system provides 2-5 or more pressures according to the difference for the treatment of mode
Power monitors pipeline, pipe interface can by the pressure monitoring mouth of the connector and Medical Devices of conventional female Luer or customization into
Row connection, to realize purpose that Medical Devices are monitored the pressure of cardiopulmonary bypass in patients bloody path different location.Due to pipeline
For disposable consumptive material, can be equipped under normal circumstances and the consistent pressure protection cover of line pressure port quantity, this pressure
Protective cover is also referred to as " disposable air filter ", mainly by shell and filtration module at its main function is to prevent from suffering from
Blood (or other liquid) in person's extracorporeal circulation blood circuit is directly contacted with the pressure monitoring mouth of Medical Devices, is prevented between patient
There is cross-infection.
The pressure monitoring device for carrying out pressure monitoring to blood purification system on the market at present is primarily present following problems:
One, most of Medical Devices (such as blood perfusion apparatus, hsempdiakysing systems) for using general pipeline or dedicated pipeline
Only the pressure of cardiopulmonary bypass in patients bloody path is monitored, whether pressure protection cover is not installed, whether be installed in place or
The case where whether damaging is monitored, and medical staff over the course for the treatment of, if not installing pressure protection cover because neglecting, will lead to trouble
Occurs cross-infection between person；
Although two, cardiopulmonary bypass in patients bloody path is configured with adaptable pressure protection cover, in blood purification treatment mistake
Cheng Zhong, medical staff is because of misoperation,, will due to installing (being such as not completely tightened) not in place although installation pressure protection cover
Cause air to enter pipeline or even enter human body, causes thrombus；
Even if three, proper use of pressure protection cover, but during blood purification treatment, because of the filter membrane of pressure protection cover
Damage or rupture, cause blood to enter inside Medical Devices, cause to damage the pressure sensor inside equipment.Simultaneously as doctor
Shield personnel are difficult to find that the filter membrane of pressure protection cover is damaged in time over the course for the treatment of, will lead to and fail in time to occurring into blood
Medical Devices monitoring mouth repair and sterilize, will lead to it is subsequent can not carry out treatment or patient between cross-infection.
Summary of the invention
The first object of the present invention is to provide a kind of pressure-detecting device for blood purification system, in pressure detecting
The state of pressure protection cover can be detected simultaneously, structure is simple and detection is accurate, to ensure the safety of patient.
The second object of the present invention is to provide a kind of Medical Devices with above-mentioned pressure-detecting device.
In order to realize that the first purpose of foregoing invention, the present invention provide a kind of pressure detecting dress for blood purification system
It sets, including electronic control unit, pressure sensor, pipe passage, liquid sensor and solenoid valve, pressure sensor, liquid sensor
It is electrically connected respectively with electronic control unit with solenoid valve, pipe passage has low level section, and low level section is logical positioned at pipeline in the vertical direction
The lower section of the first end and second end in road, the first end of pipe passage are connected with the pipeline of blood purification system, pipe passage
Second end be located on pressure sensor, liquid sensor is arranged in low level section, and solenoid valve is arranged on pipe passage and position
Between low level section and the second end of pipe passage.
As can be seen from the above scheme, in order to ensure that the safety of patient is gone on smoothly with what is treated, the pipeline of blood purification system
Pressure interface needs to install pressure protection cover, and the pressure protection cover is by shell and filtration module at its main function is to prevent
Blood (or other liquid) leakage in cardiopulmonary bypass in patients bloody path, prevents occurring cross-infection between patient.And pressure detecting
The first end of the pipe passage of device is connected by the line pressure port of blood purification system with the pipeline of blood purification system
Logical, in the case where pressure protection cover normal mounting and normal use, the filter membrane of pressure protection cover can effectively barrier liquid be (such as
Blood etc.) enter in pipe passage, then should only have air in pipe passage, liquid sensor does not have signal output at this time, automatically controlled
Unit do not receive liquid sensor signal input, the working condition for being just identified as pressure protection cover is normal, without liquid into
Enter into pipe passage, it is in the open state that electronic control unit controls solenoid valve, so that pressure sensor can be normally carried out pressure inspection
It surveys.When accidental damage or rupture occurs in pressure protection cover or the line pressure port of blood purification system is fitted without pressure
Try hard to keep shield when or pressure protection cover when not installing correctly, cause blood or other liquid to pass through pressure detecting connector
Into in pipe passage, liquid sensor will test liquid and output signal, and electronic control unit receives the defeated of liquid sensor
Signal out has just recognized liquid and has entered in pipe passage, and the solenoid valve of electronic control unit control at this time is closed, and prevents liquid entry into
The second end of pipe passage, and then damage pressure sensor.Meanwhile when less into the amount of liquid in pipe passage, liquid
Body sensor may can't accurately identify, and be mistakenly considered no liquid and enter in pipe passage, since pressure sensor is in vertical side
It is located at the top of liquid sensor upwards, a small amount of liquid can not reach the second end of pipe passage and touch pressure sensor,
To effectively prevent to cause because liquid inlet volume is less to monitor the case where mistake damages pressure sensor.And when pipe passage
When the liquid of low level section accumulation is incuded by liquid sensor, since pressure sensor is located at liquid sensor in the vertical direction
Top, when the liquid of accumulation can't reach the second end of pipe passage and touch pressure sensor, liquid sensor is
Liquid can accurately be recognized to enter in pipe passage and send signal, electronic control unit receives the signal of liquid sensor and control
Solenoid valve processed is closed, and protection Medical Devices prevent liquid entry into.Pressure-detecting device is while pressure detecting to pressure protection
The state of cover is detected, structure is simple and detection precisely, avoid cross-infection between patient, enable the treatment of patient smoothly into
Row, ensures the safety of patient.
Further embodiment is, pressure-detecting device further includes mandril, elastic component and touch switch, touch switch with it is automatically controlled
Unit electrical connection, mandril can move along its axis setting, and the first end of mandril can be pressed on touch switch, and elastic component forces top
Bar can be pressed in the second end of mandril far from touch switch, the pressure protection cover of blood purification system.
Further embodiment is that elastic component is tension spring, and tension spring covers on mandril and one end of tension spring connects the first of mandril
End, tension spring force mandril far from touch switch.
Further scheme is that touch switch is self-resetting type switch.
As can be seen from the above scheme, when pressure protection cover is completely installed to, the connection sealing between equipment is also better,
Once the connection sealing between equipment is poor, it is easy that air is allowed to enter cardiopulmonary bypass in patients bloody path formation bubble, through extracorporal circulatory system
Bloody path causes thrombus after feeding back to patient's body.Therefore, pressure-detecting device is additionally provided with mandril, elastic component and touch switch,
Whether the installation to detect pressure protection cover is accurate in place.When pressure protection cover is accurately installed in place, pressure protection cover is supported
It is pressed in the second end of mandril, mandril is forced to move along it axially towards touch switch, the first end of mandril is made to be pressed on touching
On dynamic switch, triggering touch switch closure, touch switch and electronic control unit are connected, so that pressure protection cover be prompted accurately to be installed to
Position.If the installation of pressure protection cover is not in place or installation inaccuracy, pressure protection cover fails that mandril is driven to touch touch and open
It closes, touch switch is in the open state, cannot connect with electronic control unit, and it is accurate that electronic control unit does not receive prompt pressure protection cover
The signal being installed in place indicates that pressure protection cover is not installed in place accurately, alerts and prevents so that electronic control unit starting is corresponding
Shield movement.As it can be seen that can recognize whether pressure protection cover is accurately installed in place in the blood purification treatment preparation stage, greatly promote
The detection precision of pressure-detecting device, enables the treatment of patient to go on smoothly, and avoids cross-infection between patient, ensures patient
Safety.
Further scheme is that liquid sensor is one of infrared sensor or ultrasonic sensor.
Further scheme is that electronic control unit includes circuit board, and pressure sensor and touch switch are separately positioned on electricity
On the plate of road.
Further scheme is that pressure-detecting device further includes fixed frame, and fixed frame is mountable on Medical Devices, electricity
Road plate is mounted on fixed frame.
Further scheme is that pressure-detecting device further includes reflection sensor, reflection sensor and automatically controlled list
Member electrical connection.
Further scheme is that reflection sensor is infrared sensor.
As can be seen from the above scheme, medical staff protects during carrying out blood purification treatment if not installing pressure because of carelessness
Shield will lead to and occur cross-infection between patient, fail the safety for ensureing patient.Therefore, pressure-detecting device is additionally provided with
Reflection sensor, for detecting whether pressure protection cover is installed.When there is installation pressure protection cover, pressure protection cover will stop
The signal of reflection sensor transmitting simultaneously reflects back to reflection sensor, and reflection sensor has detected signal return, i.e.,
Pressure protection cover has been installed by electronic control unit prompt.If not installing protective cover, the signal of reflection sensor transmitting is by nothing
Object stops, so that can not be by signal reflex back to reflection sensor, reflection sensor can't detect signal, that is, pass through electricity
It controls unit and exports alarm signal.As it can be seen that can recognize whether pressure protection cover is installed in the blood purification treatment preparation stage, significantly
The detection precision of adherence pressure detection device, enables the treatment of patient to go on smoothly, and avoids cross-infection between patient, ensures
The safety of patient.
In order to realize that the second purpose of foregoing invention, the present invention provide a kind of Medical Devices, including pressure-detecting device, press
Force checking device includes electronic control unit, pressure sensor, pipe passage, liquid sensor and solenoid valve, pressure sensor, liquid
Sensor and solenoid valve are electrically connected with electronic control unit respectively, and pipe passage has low level section, and low level section is located in the vertical direction
The lower section of the first end and second end of pipe passage, the first end of pipe passage are connected with the pipeline of blood purification system, pipe
The second end of paths is located on pressure sensor, and liquid sensor is arranged in low level section, and solenoid valve is arranged in pipe passage
It goes up and is located between low level section and the second end of pipe passage.
As can be seen from the above scheme, in order to ensure that the safety of patient is gone on smoothly with what is treated, the pipeline of blood purification system
Pressure interface needs to install pressure protection cover, and the pressure protection cover is by shell and filtration module at its main function is to prevent
Blood (or other liquid) leakage in cardiopulmonary bypass in patients bloody path, prevents occurring cross-infection between patient.And pressure detecting
The first end of the pipe passage of device is connected by the line pressure port of blood purification system with the pipeline of blood purification system
Logical, in the case where pressure protection cover normal mounting and normal use, the filter membrane of pressure protection cover can effectively barrier liquid be (such as
Blood etc.) enter in pipe passage, then should only have air in pipe passage, liquid sensor does not have signal output at this time, automatically controlled
Unit do not receive liquid sensor signal input, the working condition for being just identified as pressure protection cover is normal, without liquid into
Enter into pipe passage, it is in the open state that electronic control unit controls solenoid valve, so that pressure sensor can be normally carried out pressure inspection
It surveys.When accidental damage or rupture occurs in pressure protection cover or the line pressure port of blood purification system is fitted without pressure
Try hard to keep shield when or pressure protection cover when not installing correctly, cause blood or other liquid to pass through pressure detecting connector
Into in pipe passage, liquid sensor will test liquid and output signal, and electronic control unit receives the defeated of liquid sensor
Signal out has just recognized liquid and has entered in pipe passage, and the solenoid valve of electronic control unit control at this time is closed, and prevents liquid entry into
The second end of pipe passage, and then damage pressure sensor.Meanwhile when less into the amount of liquid in pipe passage, liquid
Body sensor may can't accurately identify, and be mistakenly considered no liquid and enter in pipe passage, since pressure sensor is in vertical side
It is located at the top of liquid sensor upwards, a small amount of liquid can not reach the second end of pipe passage and touch pressure sensor,
To effectively prevent to cause because liquid inlet volume is less to monitor the case where mistake damages pressure sensor.And when pipe passage
When the liquid of low level section accumulation is incuded by liquid sensor, since pressure sensor is located at liquid sensor in the vertical direction
Top, when the liquid of accumulation can't reach the second end of pipe passage and touch pressure sensor, liquid sensor is
Liquid can accurately be recognized to enter in pipe passage and send signal, electronic control unit receives the signal of liquid sensor and control
Solenoid valve processed is closed, and protection Medical Devices prevent liquid entry into.Medical Devices are while pressure detecting to pressure protection cover
State is detected, and structure is simple and detection is accurate, avoids cross-infection between patient, the treatment of patient is enable to go on smoothly,
Ensure the safety of patient.
Detailed description of the invention
Fig. 1 is partial schematic diagram of the Medical Devices embodiment of the present invention in blood purification system.
Fig. 2 is partial sectional view of the Medical Devices embodiment of the present invention in blood purification system.
Fig. 3 is the signal transmission schematic diagram of Medical Devices embodiment of the present invention.
The invention will be further described with reference to the accompanying drawings and embodiments.
Specific embodiment
Following embodiment is used for the Medical Devices of blood purification system mainly for the present invention, since medical treatment of the invention is set
It is standby to use pressure-detecting device of the invention, in the explanation of Medical Devices embodiment to pressure-detecting device embodiment into
Explanation is gone.
Referring to Fig. 1 and Fig. 2, Medical Devices 1 include pressure-detecting device and shell 11, and pressure-detecting device is mounted on shell
On 11 inner wall.Pressure-detecting device includes electronic control unit, pressure sensor 34, pipe passage 31, liquid sensor 32 and electricity
Magnet valve 33, pressure sensor 34 are electrically connected with electronic control unit, and liquid sensor 32 is electrically connected with electronic control unit, solenoid valve 33 and electricity
Control unit electrical connection.The first end 311 of pipe passage 31 is connected with the pipeline of blood purification system, and the second of pipe passage 31
End 312 is located on pressure sensor 34.Specifically, the first end 311 of pipe passage 31 is examined by the pressure being arranged on shell 11
Connector 12 is surveyed to be connected with the line pressure port 4 of blood purification system.In order to ensure patient safety and treatment it is smooth
It carries out, the line pressure port 4 of blood purification system needs to install pressure protection cover 2, and the pressure protection cover 2 is by shell 21 and mistake
Filter membrane (not indicating) composition, its main function are the blood (or other liquid) and medical treatment prevented in cardiopulmonary bypass in patients bloody path
The pressure monitoring mouth 12 of equipment 1 directly contacts, and prevents occurring cross-infection between patient.
Pipe passage 31 has low level section 313, and low level section 313 is located at the first end of pipe passage 31 in the vertical direction
311 and second end 312 lower section.Liquid sensor 32 is arranged in low level section 313, and solenoid valve 33 is arranged on pipe passage 31
And between low level section 313 and the second end 312 of pipe passage 31, i.e., liquid sensor 32 is located at pressure in the vertical direction
The lower section of sensor 34.Since during blood purification treatment, the position of the line pressure port 4 of blood purification system is different
Sample, the liquid in pipeline are also not quite similar, and have blood, filter liquor, blood plasma etc..Therefore, liquid sensor 32 can be according in pipeline
Characteristics of liquids, may be selected infrared sensor carry out blood testing, also may be selected ultrasonic sensor carry out liquid detection.
In the case where 2 normal mounting of pressure protection cover and normal use, the filter membrane of pressure protection cover 2 can effectively stop
Liquid (such as blood) enters in pipe passage 31, then should only have air in pipe passage 31, liquid sensor 32 does not have at this time
Signal output, electronic control unit do not receive the signal input of liquid sensor 32, are just identified as the working condition of pressure protection cover 2
Normally, no liquid enters in pipe passage 31, and electronic control unit control solenoid valve 33 is in the open state, thus pressure sensing
Device 34 can be normally carried out pressure detecting.When pressure protection cover 2 occur accidental damage or rupture when or blood purification system pipe
When road pressure interface 4 is fitted without pressure protection cover 2 or when pressure protection cover 2 is not installed correctly, cause blood or other
Liquid is entered in pipe passage 31 by pressure detecting connector 12, and liquid sensor 32 will test liquid and export letter
Number, electronic control unit receives the output signal of liquid sensor 32, has just recognized liquid and has entered in pipe passage 31, automatically controlled at this time
Unit controls solenoid valve 33 and closes, and prevents liquid entry into the second end 312 of pipe passage 31, and then damage pressure sensor
34.Electronic control unit outputs signal to Medical Devices 1 simultaneously, to start corresponding protection movement (as stopped pump operating, whole equipment
It stops working, power off, alarm).
Low level section 313 is in the vertical direction positioned at the lower section of the first end 311 of pipe passage 31 and second end 312, liquid
Sensor 32 is arranged in low level section 313, then pressure sensor 34 is located at the top of liquid sensor 32 in the vertical direction.One
Denier enter the amount of liquid in pipe passage 31 it is less when, liquid sensor 32 may can't accurately identify, and be mistakenly considered no liquid
Into in pipe passage 31, since pressure sensor 34 is located at the top of liquid sensor 32, a small amount of liquid in the vertical direction
The second end 312 of pipe passage 31 can not be reached and touch pressure sensor 34, to effectively prevent to lead because liquid inlet volume is less
The case where causing monitoring mistake to damage pressure sensor 34.When the liquid that the low level section 313 of pipe passage 31 is accumulated is by liquid
When body sensor 32 incudes, since pressure sensor 34 is located at the top of liquid sensor 32, the liquid of accumulation in the vertical direction
When body can't reach the second end 312 of pipe passage 31 and touch pressure sensor 34, liquid sensor 32 can be quasi-
It really has recognized liquid to enter in pipe passage 31 and send signal, electronic control unit receives the signal of liquid sensor 32 and control
Solenoid valve 33 processed is closed, and protection Medical Devices 1 prevent liquid entry into.The pressure-detecting device of Medical Devices 1 is in pressure detecting
The state of pressure protection cover 2 is detected simultaneously, structure is simple and detection is accurate, avoids cross-infection between patient, makes to suffer from
The treatment of person can be gone on smoothly, and ensure the safety of patient.
Pressure-detecting device further includes mandril 36, elastic component 37 and touch switch 35, and touch switch 35 and electronic control unit are electric
Connection, mandril 36 can move along its axis setting.The first end 361 of mandril 36 can be pressed on touch switch 35, elastic component 37
Force mandril 36 far from touch switch 35.The second end 362 of mandril 36, which runs through the shell 11 of Medical Devices 1 and extends medical treatment, to be set
Standby 1 outside, the pressure protection cover 2 of blood purification system can be pressed in the second end 362 of mandril 36.The present embodiment elastic component
37 be tension spring, and tension spring covers on mandril 36 and the first end 361 of one end of tension spring connection mandril 36, the other end of tension spring are connected to
On the inner wall of shell 11, tension spring forces mandril 36 far from touch switch 35.Touch switch 35 is self-resetting type switch, i.e. non-self-lock-ing formula
Switch, only when pressing key pressing, in an ON state, circuit forming circuit is pressed once unclamping for touch switch 35 and electronic control unit
Key, circuit then turn off.
When the pressure protection cover 2 of the line pressure port 4 of blood purification system is completely installed to, pressure protection cover 2
Shell 21 it is closer with the outer wall of the shell 11 of Medical Devices 1, the pressure detecting connectors 12 of Medical Devices 1 and blood purification system
Connection sealing between the line pressure port 4 of system is also better, otherwise the shell 21 of pressure protection cover 2 and Medical Devices 1
The outer wall of shell 11 is remoter, between the pressure detecting connector 12 of Medical Devices 1 and the line pressure port 4 of blood purification system
Connection sealing it is also poorer, be easy to allow air to enter cardiopulmonary bypass in patients bloody path and form bubble, fed back through extracorporeal circulation blood circuit
Cause thrombus after to patient's body.Therefore, pressure-detecting device is additionally provided with mandril 36, elastic component 37 and touch switch 35, with
Whether the installation for just detecting pressure protection cover 2 is accurate in place, makes the line pressure port 4 and Medical Devices 1 of blood purification system
Pressure detecting connector 12 be tightly connected.When pressure protection cover 2 is accurately installed in place, the shell 21 of pressure protection cover 2 is supported
It is pressed in the second end 362 of mandril 36, forces mandril 36 to move along it axially towards touch switch 35, make the first of mandril 36
End 361 is pressed on touch switch 35, and triggering touch switch 35 is closed, and touch switch 36 and electronic control unit are connected, to prompt
Pressure protection cover 2 is accurately installed in place, and tension spring is in the state being stretched at this time.If pressure protection cover 2 install it is not in place or
When installation inaccuracy, the shell 21 of pressure protection cover 2 fails that mandril 36 is driven to touch touch switch 35, and touch switch 35 is in
Opening state cannot be connected with electronic control unit, and electronic control unit does not receive the letter that prompt pressure protection cover 2 is accurately installed in place
Number, indicate that pressure protection cover 2 is not installed in place accurately, thus the corresponding warning of electronic control unit starting and protection movement.Tension spring
Effect be that after blood purification treatment, after removing pressure protection cover 2, mandril 36 is resetted.As it can be seen that in blood
The purification treatment preparation stage can recognize whether pressure protection cover 2 is accurately installed in place, and detection precisely, keeps the treatment of patient suitable
Benefit carries out, and avoids cross-infection between patient, ensures the safety of patient.
Pressure-detecting device further includes reflection sensor 38, and reflection sensor 38 is electrically connected with electronic control unit.It is preferred that
Ground, reflection sensor 38 are infrared sensor.Medical staff is during carrying out blood purification treatment, if because carelessness is not installed
Pressure protection cover 2, will lead to and occur cross-infection between patient, fail the safety for ensureing patient.Therefore, pressure-detecting device is also
It is provided with reflection sensor 38, for detecting whether pressure protection cover 2 is installed.When the installation of pressure protection cover 2 to blood purification
When the line pressure port 4 of system, signal that the shell 21 of pressure protection cover 2 emits blocking reflected formula sensor 38 and reflection
Back to reflection sensor 38, reflection sensor 38 has detected signal return, i.e., has installed pressure by electronic control unit prompt
It tries hard to keep shield 2.If not installing protective cover 2, the signal that reflection sensor 38 emits will stop without object, so that can not will believe
Number reflection sensor 38 is reflected back to, reflection sensor 38 can't detect signal, i.e., export alarm signal by electronic control unit
Number.As it can be seen that can recognize whether pressure protection cover 2 is installed in the blood purification treatment preparation stage, detection precisely, makes controlling for patient
Treatment can be gone on smoothly, and avoided cross-infection between patient, ensured the safety of patient.
Referring to Fig. 3, the present embodiment electronic control unit includes circuit board 39, and pressure sensor 34 and touch switch 35 are respectively set
On circuit board 39.Pressure-detecting device further includes fixed frame 310, the mountable shell 11 in Medical Devices 1 of fixed frame 310
On inner wall, circuit board 39 is mounted on fixed frame 310.The effect of circuit board 39 be monitoring touch switch 35, pressure sensor 34,
The signal and give the control signal of solenoid valve 33 that liquid sensor 32, reflection sensor 38 are fed back, pass through circuit board 39
After microprocessor (MCU) is handled, the primary processor (CPU) through communication interface and Medical Devices 1 is communicated, and pressure is protected
The status information and pressure detecting information of shield 2 send primary processor to, and primary processor controls 1 other component of Medical Devices and executes
Corresponding operation such as stops pump operating, and folder closes blood circuit etc., to ensure the safety of patient.
Above embodiments, only preferred embodiments of the invention, be not to limit the scope of the present invention, therefore it is all according to the present invention
The equivalent change or modification that the structure, feature and principle of claim is done should be included in present patent application model
In enclosing.
Claims (10)
1. a kind of pressure-detecting device for blood purification system, including electronic control unit and pressure sensor, the pressure is passed
Sensor is electrically connected with the electronic control unit, it is characterised in that:
The pressure-detecting device further includes pipe passage, liquid sensor and solenoid valve, the liquid sensor and the electricity
Magnet valve is electrically connected with the electronic control unit respectively；
The pipe passage has low level section, and the low level section is located at the first end and the of the pipe passage in the vertical direction
The lower section at two ends, the first end of the pipe passage are connected with the pipeline of the blood purification system, the pipe passage
Second end is located on the pressure sensor；
The liquid sensor is arranged in the low level section, and the solenoid valve is arranged on the pipe passage and is located at described
Between low level section and the second end of the pipe passage.
2. pressure-detecting device according to claim 1, it is characterised in that:
The pressure-detecting device further includes mandril, elastic component and touch switch, and the touch switch and the electronic control unit are electric
Connection, the mandril can move along its axis setting；
The first end of the mandril can be pressed on the touch switch, and the elastic component forces the mandril far from the touch
Switch；
The pressure protection cover of the blood purification system can be pressed in the second end of the mandril.
3. pressure-detecting device according to claim 2, it is characterised in that:
The elastic component is tension spring, and the tension spring covers on the mandril and one end of the tension spring connects the first of the mandril
End, the tension spring force the mandril far from the touch switch.
4. pressure-detecting device according to claim 3, it is characterised in that:
The touch switch is self-resetting type switch.
5. pressure-detecting device according to claim 1, it is characterised in that:
The liquid sensor is one of infrared sensor or ultrasonic sensor.
6. pressure-detecting device according to claim 2, it is characterised in that:
The electronic control unit includes circuit board, and the pressure sensor and the touch switch are separately positioned on the circuit board
On.
7. pressure-detecting device according to claim 6, it is characterised in that:
The pressure-detecting device further includes fixed frame, and the fixed frame is mountable on Medical Devices, the circuit board installation
On the fixed frame.
8. pressure-detecting device according to any one of claims 1 to 7, it is characterised in that:
The pressure-detecting device further includes reflection sensor, and the reflection sensor is electrically connected with the electronic control unit.
9. pressure-detecting device according to claim 8, it is characterised in that:
The reflection sensor is infrared sensor.
10. Medical Devices, including pressure-detecting device, it is characterised in that:
The pressure-detecting device is the pressure-detecting device in 1 to 9 any one of the claims.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910572784.8A CN110339414B (en) | 2019-06-27 | 2019-06-27 | Pressure detection device for blood purification system and medical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910572784.8A CN110339414B (en) | 2019-06-27 | 2019-06-27 | Pressure detection device for blood purification system and medical equipment |
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| CN110339414A true CN110339414A (en) | 2019-10-18 |
| CN110339414B CN110339414B (en) | 2022-02-11 |
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