CN110179448A - Wearable blood pressure meter - Google Patents
Wearable blood pressure meter Download PDFInfo
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- CN110179448A CN110179448A CN201810527288.6A CN201810527288A CN110179448A CN 110179448 A CN110179448 A CN 110179448A CN 201810527288 A CN201810527288 A CN 201810527288A CN 110179448 A CN110179448 A CN 110179448A
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- 230000036772 blood pressure Effects 0.000 title claims abstract description 39
- 238000007789 sealing Methods 0.000 claims abstract description 13
- 239000007787 solid Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 3
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 13
- 229910052753 mercury Inorganic materials 0.000 description 13
- 238000013461 design Methods 0.000 description 9
- 238000009530 blood pressure measurement Methods 0.000 description 5
- 230000006378 damage Effects 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 239000002775 capsule Substances 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000013022 venting Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000004064 dysfunction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/021—Measuring pressure in heart or blood vessels
- A61B5/02141—Details of apparatus construction, e.g. pump units or housings therefor, cuff pressurising systems, arrangements of fluid conduits or circuits
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/021—Measuring pressure in heart or blood vessels
- A61B5/022—Measuring pressure in heart or blood vessels by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/021—Measuring pressure in heart or blood vessels
- A61B5/022—Measuring pressure in heart or blood vessels by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers
- A61B5/02233—Occluders specially adapted therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/021—Measuring pressure in heart or blood vessels
- A61B5/022—Measuring pressure in heart or blood vessels by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers
- A61B5/0235—Valves specially adapted therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
- A61B5/6802—Sensor mounted on worn items
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Cardiology (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Public Health (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Veterinary Medicine (AREA)
- Pathology (AREA)
- Biophysics (AREA)
- Physiology (AREA)
- Ophthalmology & Optometry (AREA)
- Dentistry (AREA)
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
Abstract
A kind of wearable blood pressure meter, including pneumatic circuit and connect the air pressure component of the pneumatic circuit, the air pressure component includes inflation motor, solenoid valve, pressure sensor and cuff air bag, the inflation motor inflates the cuff air bag by the pneumatic circuit, the wearable blood pressure meter further includes the safe vent plug of a sealing one opening of pneumatic circuit, the opening is opened on the pneumatic circuit or the air pressure component, which can be pushed when atmospheric pressure value reaches predetermined value in the pneumatic circuit by the air pressure in the pneumatic circuit loses heart to prevent the excessively high generation security risk of air pressure.In the wearable blood pressure meter gas replenishment process; its internal circuit safety control function failure; it will lead to the inflation motor and successively give pneumatic circuit inflating pressure; cuff gasbag pressure is caused to be continuously increased; when air pressure is increased to predetermined value; pressure can wash the overvoltage protection plug of the safe vent plug open in pneumatic circuit, quick air releasing be realized, to prevent the security risk of the excessively high generation of cuff air bag pressure.
Description
Technical field
The present invention relates to a kind of blood pressure measuring instrument, in particular to a kind of wearable blood pressure meter.
Background technique
Existing blood pressure measuring device is pneumatic circuit by sealing, inflation motor, cuff air bag, solenoid valve, at a slow speed
The gas path components such as gas bleeder valve and pressure sensor are connected, and carry out pressurization to cuff air bag by inflation motor and complete blood pressure measurement,
To guarantee pressurization safety, it will usually electronic pressure transmitter is connected in pneumatic circuit, when wearable blood pressure meter circuit safety control
Function processed continues to pressurize when normal, and when reaching 300 millimetres of mercury such as pneumatic circuit pressure, pressure sensor can send a signal to list
Piece machine main control chip (MCU), MCU can order inflation motor with stop inflate work, and order battery valve open valve it is quick
Lose heart, to realize the purpose of release cuff air bag pressure, protection user carries out security measurement.Because sphygmomanometer is electronics
Device is made of a electronic components up to a hundred, and dysfunction or blood occur in all kinds of electronic components when for different application environment
Pressure meter is internally embedded formula software operation exception, so that wearable blood pressure meter circuit safety control function is failed, such as sphygmomanometer
Motor is allowed to stop inflation, motor is opened in continuous continuous charge or sphygmomanometer by solenoid valve instead, and solenoid valve just closes always
It closes, pressure sensor incudes airline pressure failure etc..At this moment sphygmomanometer itself does not have can detect cuff air bag pressure in time
Power whether over-voltage, entire sphygmomanometer system lacks safety guard, can damage to the user of wearable blood pressure meter.Example
When such as pressure sensor operational failure, inflation motor successively gives pneumatic circuit inflation, the component on pneumatic circuit all with pipe
Road interference fit is close, will not separate because of pipeline gas pressure increase with pipeline, be continuously increased air pressure and compressed by cuff air bag
User's arm, at this moment sphygmomanometer meeting harm users, can not achieve the safety that injury is protected the user from blood pressure measurement
Defencive function.There are still very big security risks for this sphygmomanometer, and are the safety that sphygmomanometer is generally existing currently on the market
Hidden danger, such security risk is especially prominent in the application of wearable 24 h ABP meter.
Summary of the invention
Present invention seek to address that the above problem, and user escapes injury and has more high safety when providing a kind of measurement blood pressure
The wearable blood pressure meter of property.
A kind of wearable blood pressure meter including pneumatic circuit and connects the air pressure component of the pneumatic circuit, the air pressure component packet
Inflation motor, solenoid valve, first pressure sensor and cuff air bag are included, the inflation motor is by the pneumatic circuit to the cuff gas
Capsule inflation, which further includes the safe vent plug of a sealing one opening of pneumatic circuit, which is opened in this
On pneumatic circuit or the air pressure component, the safe vent plug can in the pneumatic circuit atmospheric pressure value when reaching predetermined value by the air pressure
Air pressure pushing force in pipeline washes the overvoltage protection plug of the safe vent plug open, quick air releasing is realized, to prevent cuff air bag pressure
Excessively high generation security risk.
In the wearable blood pressure meter gas replenishment process, when circuit safety control function inside it fails, lead to described fill
Gas motor successively gives pneumatic circuit inflating pressure, and the sphygmomanometer girding air bag and pneumatic circuit internal pressure constantly increase,
The safe vent plug can pass through gas pressure increased in the pneumatic circuit and rush when air pressure is increased to predetermined value in the pneumatic circuit
It opens the specially designed sealing structure of the substitute plug and realizes quick release cuff air bag pressure, to prevent cuff air bag pressure excessively high
Generate the security risk of blood pressure measurement.
Further, which includes vent plug seat and overvoltage protection plug, and the vent plug seat and the pneumatic circuit passed through
Be full of cooperation sealing, the frictional force of the interference fit be greater than when gas pressure reaches predetermined value in the pneumatic circuit vent plug arm by
Air pressure pushing force, which offers the gas port for being connected to the loading line, which seals the gas port simultaneously
It can be when the loading line air pressure inside value be greater than the preset air pressure value from gas port pop-up and quick air releasing.
Further, which further includes low speed air escape valve and second pressure sensor.
Further, which includes vent plug seat and overvoltage protection plug, and the vent plug seat and the pneumatic circuit passed through
Be full of cooperation sealing, the frictional force of the interference fit be greater than when gas pressure reaches predetermined value in the pneumatic circuit vent plug seat by
Air pressure pushing force, which offers the gas port for being connected to the loading line, which seals the gas port,
When atmospheric pressure value is greater than the preset air pressure value in the loading line, masterpiece is pushed in air pressure of the overvoltage protection plug in the pneumatic circuit
From gas port pop-up and quick air releasing under.
Further, the cross section along axis direction of the vent plug seat is by inverted T shaped and be made of rigid material.
Further, which is trapezoidal or inverted T-shaped along the cross section of axis direction, the overvoltage protection plug it is outer
Side is equipped with sealing ring.
Further, which includes vent plug arm and overvoltage protection plug, and the vent plug arm and the pneumatic circuit passed through
Be full of cooperation sealing, the frictional force of the interference fit be greater than when gas pressure reaches the predetermined value in the pneumatic circuit vent plug seat by
The air pressure pushing force arrived, the vent plug arm offer the gas port for being connected to the loading line, which is set to the vent plug
Arm one end simultaneously seals the gas port, and when atmospheric pressure value is greater than the predetermined value in the loading line, the overvoltage protection plug is in the air pressure
It is separated under air pressure pushing force effect in pipeline with the vent plug arm, makes the pneumatic circuit quick air releasing, to prevent the cuff air bag
The excessively high generation security risk of air pressure, realizes the safeguard protection when pneumatic circuit over-voltage.
Further, which corresponds to the overvoltage protection plug equipped with wedge shaped end, and the overvoltage protection plug is along axis direction
Cross section be it is U-shaped.
Further, elastic component is equipped in the safe vent plug, for resetting after so that the overvoltage protection plug is lost heart.
A kind of wearable blood pressure meter including pneumatic circuit and connects the air pressure component of the pneumatic circuit, the air pressure component packet
Inflation motor, solenoid valve, first pressure sensor and cuff air bag are included, the inflation motor is by the pneumatic circuit to the cuff gas
Capsule inflation, which further includes the safe vent plug of a sealing one opening of pneumatic circuit, which includes
One solid vent plug, the opening are opened on the pneumatic circuit or the air pressure component, the safe vent plug can in the pneumatic circuit gas
The safe vent plug is washed open by the air pressure pushing force in the pneumatic circuit when pressure value reaches predetermined value, realizes quick air releasing, to prevent
The only excessively high generation security risk of cuff air bag pressure.
Further, the cross section along axis direction of the solid vent plug is inverted T shaped, which further includes letting out at a slow speed
Air valve and second pressure sensor.
The sphygmomanometer designed in this way, after the reset of wearable blood pressure meter circuit safety control function, such as software upgrading, hardware
Maintenance etc., can continue to complete blood pressure measurement, really realize the safely and effectively target of medical instrument.
The positive effect of the present invention is, when the failure of the circuit safety control function of all designs of sphygmomanometer, gas circuit gas
Pressure may threaten sphygmomanometer user's life security, and safe vent plug can lead to when air pressure reaches predetermined value in pneumatic circuit
Cross the optimization design of mechanical structure i.e. by the air pressure pushing force in pneumatic circuit lose heart in the way of to prevent cuff air bag pressure
Excessively high generation security risk realizes the effect of user security protection.
Detailed description of the invention
Fig. 1 is that a sphygmomanometer inflates gas circuit schematic diagram in first embodiment of the invention.
Fig. 2 is the schematic cross-sectional view of safe vent plug in Fig. 1.
Fig. 3 is the schematic cross-sectional view of safe vent plug in a second embodiment of the invention.
Fig. 4 is the schematic cross-sectional view of safe vent plug in a second embodiment of the invention.
Fig. 5 is the schematic cross-sectional view of safe vent plug in a second embodiment of the invention.
Fig. 6 is the schematic cross-sectional view of overvoltage protection plug in another embodiment of the present invention.
Fig. 7 is the schematic cross-sectional view of overvoltage protection plug in a further embodiment of this invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that the described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.Based on this
Embodiment in invention, every other reality obtained by those of ordinary skill in the art without making creative efforts
Example is applied, shall fall within the protection scope of the present invention.
It should be noted that it can be directly to separately when an element is considered as " connection " another element
One element may be simultaneously present the element being centrally located.When an element is considered as " being set to " another element,
It, which can be, is set up directly on another element or may be simultaneously present the element being centrally located.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more phases
Any and all combinations of the listed item of pass.
An embodiment of the present invention is related to a kind of wearable blood pressure meter 100.
Referring to Fig. 1, wearable blood pressure meter 100 includes a pneumatic circuit 10 and passes through in first embodiment of the invention
The pneumatic circuit 10 connection air pressure component, air pressure component include inflation motor 11, venting solenoid valve 13, low speed air escape valve 14,
First pressure sensor 15, second pressure sensor 16, cuff air bag 17 and safe vent plug 18.Pneumatic circuit 10 is equipped with an opening
101, safe 18 sealed opening 101 of vent plug.
With continued reference to FIG. 2, safe vent plug 18 is a solid vent plug, solid vent plug 18 passes through interference with the pneumatic circuit 10
Cooperation sealing, solid vent plug 18 can be popped up when 10 air pressure inside value of loading line is greater than preset air pressure value from pneumatic circuit, real
Existing pneumatic circuit quick air releasing, discharges cuff gasbag pressure.Preset air pressure value may be set to 300 millimetress of mercury or according to practical need
Ask setting.The cross section along axis direction of solid vent plug 18 is inverted T shaped.Solid vent plug 18 is from bottom end gradually constriction upwards.?
In other embodiments, the outside of solid vent plug 18 can be equipped with the elastic component resetted after making the solid vent plug 18 lose heart.
When normal use, inflation motor 11 is inflated into pneumatic circuit 10, and venting solenoid valve connection gas circuit simultaneously keeps valve
It closes.Low speed air escape valve connection pipeline remains a constant speed discouraged, and first pressure sensor 15 and second pressure sensor 16 are felt simultaneously
Answer pressure in pneumatic circuit 10.Cuff air bag 17 receives inner gas pressure of the pipeline from inflation motor 11, and gas is constantly filled with cuff
Air bag 17, pressurizes to human arm.Pressure is passed into micro- place by first pressure sensor 15 or second sensor 16
Reason is controlled, and realizes blood pressure measurement.Double guarantors can be realized using first pressure sensor 15 and second pressure sensor 16 simultaneously
Danger, when first pressure sensor 15 fails, second pressure sensor 16 can continue to complete measurement blood pressure, while guarantee gas circuit gas
Voltage-controlled system realizes the safe handling of sphygmomanometer when patient has no ability to protect oneself, avoids patient within the scope of safe pressure
Accident occurs.Safe vent plug can completely pop-up when quick air releasing, such elastic component can push against substitute, and side makes safety beyond the Great Wall
Vent plug moves back after losing heart, to realize the purpose of cycle detection.
When extreme case occurs, i.e. when two pressure sensors all fail, inflation motor 11 still can be inflated constantly, and be put
Pneumoelectric magnet valve 13 and low speed air escape valve 14 all can not achieve the exhaust of sphygmomanometer girding air bag 17, the air pressure in loading line 10
When reaching 300 millimetres of mercury, the air pressure that safe vent plug 18 can be directly increased is washed open, 10 air pressure of loading line with quick air releasing,
Realize the function of protection user security.
Please continue to refer to Fig. 3, in second embodiment of the invention, a wearable blood pressure meter has different safe vent plugs
Design, the wearable blood pressure meter include a safe vent plug 28, and safe vent plug 28 includes vent plug seat 281 and overvoltage protection plug 285, gas
By interference fit seal, vent plug seat 281 offers the gas port for being connected to the loading line 10 for obturating plug 281 and pneumatic circuit 10
282, overvoltage protection plug 285 seals one end of gas port 282 and can be greater than preset air pressure value in 10 air pressure inside value of loading line
When, the air pressure pushing force in the pneumatic circuit washes the overvoltage protection plug 285 of safe vent plug open, realizes quick air releasing.Vent plug seat 28
Along the cross section of axis direction by inverted T shaped and be made of rigid material.The cross section along axis direction of overvoltage protection plug 285 is
It is trapezoidal.In the present embodiment, the outside of overvoltage protection plug 285 can be equipped with the elasticity for making to reset after overvoltage protection plug 285 is discouraged
Part.
In use, when the air pressure in loading line 10 reaches 300 millimetres of mercury, the overvoltage protection plug of safe vent plug 28
The 285 air pressure pushing forces that can be directly increased are washed open, 10 air pressure quick release of loading line, realize the function of protection user security
Energy.
Please continue to refer to Fig. 4, in third embodiment of the invention, a wearable blood pressure meter has and second embodiment
The different overvoltage protection plug of quantity, the wearable blood pressure meter include a safe vent plug 38, safe vent plug 38 include vent plug seat 381 and
Two overvoltage protection plugs 385, vent plug seat 381 and pneumatic circuit 10 are by interference fit seal, and vent plug seat 381 offers connection, and this is filled
Two gas ports 382 and 383 of air pipe 10, two overvoltage protection plugs 385 seal corresponding 382 one end of gas port, and can be in gas tube
10 air pressure inside value of road pops up overvoltage protection plug 385 at random when being greater than preset air pressure value, realize quick air releasing.Two over-voltages guarantor is set
Shield plug 385, is from reliability perspectives, it is assumed that the failure of one of safeguard protection plug, another safeguard protection plug can be with
It realizes expectation function, the reliability of sphygmomanometer overvoltage safety protection function can be improved.The cross along axis direction of vent plug seat 38
Section is by inverted T shaped and be made of rigid material.The cross section along axis direction of two overvoltage protection plugs 385 is trapezoidal or combination ladder
Shape.In the present embodiment, the outside of two overvoltage protection plugs 385 can be equipped with the bullet for making to reset after two overvoltage protection plugs 385 are discouraged
Property part.
In use, when the air pressure in loading line 10 reaches 300 millimetres of mercury, two overvoltage protection plugs of safe vent plug 38
385 one of them air pressure that can be directly increased are washed open, and 10 air pressure quick release of loading line realizes the function of protection patient safety
Energy.When using two overvoltage protection plugs, flame-arrester vent plug best performance, wherein when an overvoltage protection plug ageing failure, another
It can also play a protective role.
Please continue to refer to Fig. 5, in four embodiment of the invention, a wearable blood pressure meter has different safe vent plugs
Design, the wearable blood pressure meter include a safe vent plug 48, and safe vent plug 48 includes vent plug arm 481 and overvoltage protection plug 485, gas
Arm 481 and pneumatic circuit 10 are filled in by interference fit seal, vent plug arm 481 offers the gas port 482 of connection loading line 10,
Overvoltage protection plug 485 is sheathed on 481 one end of vent plug arm and seals gas port 482, and overvoltage protection plug 481 can be in loading line 10
Portion's atmospheric pressure value be greater than preset air pressure value when, the overvoltage protection plug in the pneumatic circuit air pressure pushing force effect under with the vent plug
Arm separation, makes the pneumatic circuit quick air releasing.The corresponding overvoltage protection plug 485 of vent plug arm 481 is equipped with wedge shaped end.Overvoltage protection plug
485 cross section along axis direction is U-shaped, and is fabricated from a flexible material.In the present embodiment, safe 48 outside of vent plug
The elastic component resetted after making overvoltage protection plug 485 lose heart can be equipped with.
In use, when the air pressure in loading line 10 reaches 300 millimetres of mercury, the overvoltage protection plug of safe vent plug 48
485 air pressures that can be directly increased are washed open, 10 air pressure quick release of loading line, realize the function of protection user security.
In embodiments of the present invention, opening 101 can be directly arranged on the pipeline of loading line 10 the also company of being integrated in
The other elements on loading line 10 are connect, on pressure sensor or gas bleeder valve, to facilitate manufacture and save cost.
Please continue to refer to Fig. 6, the over-voltage in overvoltage protection plug 285 in this second embodiment and third embodiment is protected
Shield plug 385 can be that other shapes are equipped with several ring type seals 688 in other embodiments on the outside of an overvoltage protection plug 68,
With increasing friction force.
Please continue to refer to Fig. 7, the over-voltage in overvoltage protection plug 285 in this second embodiment and third embodiment is protected
Shield plug 385 can be other shapes, and in other embodiments, 78 front end of an overvoltage protection plug is equipped with prominent lip 785, to increase
Hold power.
In embodiment of the present invention, wearable blood pressure meter 100 changes the structure of conventional seals gas circuit vent plug, increases air pressure and protects
Shield plug, when the failure of the circuit safety control function of all designs of sphygmomanometer, pneumatic circuit air pressure increase threatens patients ' lives
When safe, it is necessary to have when reaching 300 millimetress of mercury or more for pneumatic circuit air pressure, by the optimization design of mechanical structure, make
Gas circuit is depressured automatically, realizes the safety protection function of user's sphygmomanometer monitoring process.In present embodiment, according to the physics of material
Characteristic designs air pressure overvoltage protection plug, it is made to discharge gas circuit air pressure within scheduled pressure limit, realizes sphygmomanometer protection disease
The function of people's safety.The pressure release range of sphygmomanometer safety may be provided between 300-305 millimetres of mercury, but can also basis
Need to design any value between 299-350 millimetres of mercury, specific protection pressure is the overvoltage protection plug according to safe vent plug
Design need depending on.According to relevant industries standard, sphygmomanometer, which loses heart, to be required to the air pressure in loading line from 260 millimeters
The time that mercury column drops to 15 millimetress of mercury should be no more than 10 seconds, and in present embodiment, safe vent plug can be realized quick air releasing, will
Air pressure in loading line is designed as 1-30 seconds ranges according to specific needs from the time that 300 millimetress of mercury drop to 15 millimetress of mercury
It is interior.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Protect range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of wearable blood pressure meter, including pneumatic circuit and the air pressure component of the pneumatic circuit is connected, which includes
Inflation motor, solenoid valve, first pressure sensor and cuff air bag, the inflation motor is by the pneumatic circuit to the cuff air bag
Inflation, it is characterised in that: the wearable blood pressure meter further includes the safe vent plug of a sealing one opening of pneumatic circuit, the opening
Be opened on the pneumatic circuit or the air pressure component, the safe vent plug can in the pneumatic circuit atmospheric pressure value it is logical when reaching predetermined value
The air pressure pushing force crossed in the pneumatic circuit washes the overvoltage protection plug of the safe vent plug open, quick air releasing is realized, to prevent cuff
The excessively high generation security risk of air bag pressure.
2. a kind of wearable blood pressure meter as described in claim 1, it is characterised in that: the air pressure component further includes low speed air escape valve
And second pressure sensor.
3. a kind of wearable blood pressure meter as described in claim 1, it is characterised in that: the safe vent plug includes vent plug seat and over-voltage
Protection plug, the vent plug seat and the pneumatic circuit are greater than the pneumatic circuit by interference fit seal, the frictional force of the interference fit
The air pressure pushing force that the vent plug seat is subject to when interior gas reaches predetermined value, the vent plug seat offer the air guide for being connected to the loading line
Hole, the overvoltage protection plug seal the gas port, when atmospheric pressure value is greater than the preset air pressure value in the loading line, the overvoltage protection
It fills under the air pressure pushing force effect in the pneumatic circuit from gas port pop-up and quick air releasing.
4. a kind of wearable blood pressure meter as claimed in claim 3, it is characterised in that: the vent plug seat along the transversal of axis direction
Face is by inverted T shaped and be made of rigid material.
5. a kind of wearable blood pressure meter as claimed in claim 3, it is characterised in that: cross of the overvoltage protection plug along axis direction
Section is trapezoidal or inverted T-shaped, and the outside of the overvoltage protection plug is equipped with sealing ring.
6. a kind of wearable blood pressure meter as described in claim 1, it is characterised in that: the safe vent plug includes vent plug arm and over-voltage
Protection plug, the vent plug arm and the pneumatic circuit are greater than the pneumatic circuit by interference fit seal, the frictional force of the interference fit
The air pressure pushing force that the vent plug arm is subject to when interior gas pressure reaches the predetermined value, which, which offers, is connected to the loading line
Gas port, which is set to and the vent plug arm one end and seals the gas port, and atmospheric pressure value is big in the loading line
When the predetermined value, which is separated under the air pressure pushing force effect in the pneumatic circuit with the vent plug arm, makes this
Pneumatic circuit quick air releasing, to prevent the excessively high generation security risk of the cuff air bag pressure, when realizing the pneumatic circuit over-voltage
Safeguard protection.
7. a kind of wearable blood pressure meter as claimed in claim 6, it is characterised in that: the vent plug arm corresponds to the overvoltage protection plug and sets
There is wedge shaped end, which is U-shaped along the cross section of axis direction.
8. a kind of such as the described in any item wearable blood pressure meters of claim 1-7, it is characterised in that: be equipped with bullet in the safe vent plug
Property part, for make the overvoltage protection plug lose heart after reset.
9. a kind of wearable blood pressure meter, including pneumatic circuit and the air pressure component of the pneumatic circuit is connected, which includes
Inflation motor, solenoid valve, first pressure sensor and cuff air bag, the inflation motor is by the pneumatic circuit to the cuff air bag
Inflation, it is characterised in that: the wearable blood pressure meter further includes the safe vent plug of a sealing one opening of pneumatic circuit, the safety
Vent plug includes a solid vent plug, which is opened on the pneumatic circuit or the air pressure component, which can be in the air pressure
The safe vent plug is washed open by the air pressure pushing force in the pneumatic circuit when atmospheric pressure value reaches predetermined value in pipeline, realization is quickly let out
Gas, to prevent the excessively high generation security risk of cuff air bag pressure.
10. a kind of wearable blood pressure meter as claimed in claim 9, it is characterised in that: the solid vent plug along axis direction
Cross section be it is inverted T shaped, which further includes low speed air escape valve and second pressure sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| Publication number | Publication date |
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| CN110179448B (en) | 2024-07-26 |
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