CN113331807A - Portable blood pressure detector - Google Patents
Portable blood pressure detector Download PDFInfo
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- CN113331807A CN113331807A CN202110613858.5A CN202110613858A CN113331807A CN 113331807 A CN113331807 A CN 113331807A CN 202110613858 A CN202110613858 A CN 202110613858A CN 113331807 A CN113331807 A CN 113331807A
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- inflatable belt
- cuff
- blood pressure
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- inflatable
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- 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
- A61B5/0225—Measuring pressure in heart or blood vessels by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers the pressure being controlled by electric signals, e.g. derived from Korotkoff sounds
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Cardiology (AREA)
- Vascular Medicine (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Physiology (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Veterinary Medicine (AREA)
- Physics & Mathematics (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Ophthalmology & Optometry (AREA)
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
Abstract
The invention relates to the technical field of electronic equipment, and provides a portable blood pressure detector which comprises a host and a cuff, wherein the host is communicated with the cuff through a hose I, the inner surface of the cuff is provided with an inflatable belt I, an inflatable belt II, an inflatable belt III, an inflatable belt IV and an inflatable belt V which are communicated with each other, the inflatable belt I and the inflatable belt III are both parallel to the width direction of the cuff, the inflatable belt II and the inflatable belt IV are both parallel to the length direction of the cuff, one end of the inflatable belt V is communicated with the middle of the inflatable belt II, the other end of the inflatable belt V is communicated with the middle of the inflatable belt IV, the middle of the inflatable belt II is communicated with the host through the hose II, and the length of the inflatable belt II is 1/2-2/3 of the length of the cuff. Through the technical scheme, the problem that the blood pressure detector in the prior art is not standard in use and causes inaccurate test results is solved.
Description
Technical Field
The invention relates to the technical field of electronic equipment, in particular to a portable blood pressure detector.
Background
An electronic sphygmomanometer is a medical device for measuring blood pressure by using modern electronic technology and an indirect blood pressure measuring principle, and generally comprises an occlusion cuff, a sensor, an air pump and a measuring circuit. Nowadays, the electronic sphygmomanometer realizes full-automatic intelligent measurement, and measurement data can be automatically transmitted to a health management platform through a network and a generated health data report is fed back to a user. The measurement result is more accurate than that of the traditional electronic sphygmomanometer due to the adoption of a more advanced technology. When the electronic sphygmomanometer is used, the standard operation is required, for example, the arm strap binding force is moderate, the standard for the moderate binding force of each person is different, and if the binding force is not appropriate, the test result is influenced.
Disclosure of Invention
The invention provides a portable blood pressure detector, which solves the problem that the use of the blood pressure detector in the prior art is not standard, so that the test result is inaccurate.
The technical scheme of the invention is as follows: the cuff comprises a host and a cuff, wherein the host is communicated with the cuff through a first hose, a first inflatable belt, a second inflatable belt, a third inflatable belt, a fourth inflatable belt and a fifth inflatable belt which are communicated with each other are arranged on the inner surface of the cuff, the first inflatable belt and the third inflatable belt are parallel to the width direction of the cuff, the second inflatable belt and the fourth inflatable belt are parallel to the length direction of the cuff, one end of the fifth inflatable belt is communicated with the middle part of the second inflatable belt, the other end of the fifth inflatable belt is communicated with the middle part of the fourth inflatable belt, the middle part of the second inflatable belt is communicated with the host through a second hose,
the length of the second inflatable belt is 1/2-2/3 of the length of the cuff.
Furthermore, one end of the cuff is provided with a clamping ring, the other end of the cuff is provided with a blocking part, and the height of the blocking part is greater than that of the clamping ring.
Furthermore, the blocking part is made of elastic materials.
Further, the inside motor control circuit who is connected with master control circuit that is provided with of host computer, motor control circuit is including triode Q2, opto-coupler U1 and the darlington pipe Q1 that connects gradually, triode Q2's base with master control circuit's PWM output is connected, triode Q2's projecting pole is connected with power VCC, triode Q2's collecting electrode is connected with opto-coupler U1's input, opto-coupler U1's output is connected with darlington pipe Q1's base, darlington pipe Q1's projecting pole passes through resistance R1 and connects power VDD, darlington pipe Q1's collecting electrode ground connection, darlington pipe Q1's projecting pole still is connected with motor M's positive supply end, motor M's negative supply end ground connection.
Further, the negative supply end of motor M passes through resistance R4 ground connection, the remote ground end of resistance R4 is connected with the non inverting input end of fortune amplifier U4B, the inverting input end of fortune amplifier U4B is connected with reference voltage VREF, the output of fortune amplifier U4B with main control circuit's IO mouth is connected.
The reference source circuit comprises a resistor R6 and a potentiometer RP1 which are connected in series, one end of the resistor R6 is connected with a power supply VDD, one end of the potentiometer RP1 is grounded, and a sliding end of the potentiometer RP1 is used as a reference voltage VREF and is connected to an inverting input end of the operational amplifier U4B.
Further, still be provided with the power supply switching circuit in the host computer, the power supply switching circuit includes triode Q7, diode D1 and diode D2, triode Q7's projecting pole is connected with battery B1's positive pole, triode Q7's base loops through diode D1, resistance R9 connection power 3.3V, diode D2's negative pole is connected to triode Q7's collecting electrode, diode D2's positive pole is connected with power 3.3V, diode D2's negative pole is as the output of power supply switching circuit, for the interior circuit element power supply of host computer.
The working principle and the beneficial effects of the invention are as follows:
according to the invention, the inflatable belts (comprising the inflatable belt I, the inflatable belt II, the inflatable belt III, the inflatable belt IV and the inflatable belt V) are arranged on the inner walls of the cuff, when a tester sleeves the cuff on the upper arm and clicks the pre-inflation button on the host, the host firstly inflates the inflatable belts in two directions through the hose, and when the inflatable belts are full, a user adjusts the tightness of the cuff according to the compression condition of the upper arm, so that the upper arm does not feel compressed. After the tightness of the cuff is adjusted, the main machine discharges the gas in the inflatable belt through the second hose. After the air in the inflatable belt is exhausted, the proper distance is kept between the cuff and the upper arm. At this time, the tester clicks the start button on the host computer, and the host computer inflates air into the cuff through the hose to start the blood pressure test.
Usually, the length of the cuff is 2/3-3/2 of the circumference of the upper arm, in order to ensure the accuracy of the measurement result, the length of the second inflatable belt is smaller than the circumference of the upper arm, and the length of the second inflatable belt is 1/2-2/3 of the length of the cuff.
The arrangement of the inflatable belt provides a proper reference for a tester to adjust the tightness of the cuff, so that the tester can adjust the cuff to a proper value conveniently, and the accuracy of a measurement result is improved.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic top view of a cuff of the present invention;
FIG. 2 is a schematic perspective view of a cuff of the present invention;
FIG. 3 is a schematic diagram of a motor control circuit according to the present invention;
FIG. 4 is a schematic diagram of a power switching circuit according to the present invention;
FIG. 5 is a schematic diagram of an auto-power-off circuit of the present invention;
in the figure: the inflatable cuff comprises a cuff 1, a clamping ring 101, a blocking part 102, an inflatable belt 2, an inflatable belt 21, an inflatable belt 22, an inflatable belt 23, an inflatable belt 24, an inflatable belt 25, an inflatable belt five, a hose 26, a hose II, a motor control circuit 3 and a power supply switching circuit 4.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any inventive step, are intended to be within the scope of the present invention.
As shown in fig. 1-2, the portable blood pressure monitor of the present embodiment includes a main unit and a cuff, the main unit is communicated with the cuff through a first hose, a first inflatable belt, a second inflatable belt, a third inflatable belt, a fourth inflatable belt and a fifth inflatable belt which are communicated with each other are disposed on the inner surface of the cuff, the first inflatable belt and the third inflatable belt are both parallel to the width direction of the cuff, the second inflatable belt and the fourth inflatable belt are both parallel to the length direction of the cuff, one end of the fifth inflatable belt is communicated with the middle of the second inflatable belt, the other end of the fifth inflatable belt is communicated with the middle of the fourth inflatable belt, the middle of the second inflatable belt is communicated with the main unit through a second hose,
the length of the second inflatable belt is 1/2-2/3 of the length of the cuff.
According to the invention, the inflatable belts (comprising the inflatable belt I, the inflatable belt II, the inflatable belt III, the inflatable belt IV and the inflatable belt V) are arranged on the inner walls of the cuff, when a tester sleeves the cuff on the upper arm and clicks the pre-inflation button on the host, the host firstly inflates the inflatable belts in two directions through the hose, and when the inflatable belts are full, a user adjusts the tightness of the cuff according to the compression condition of the upper arm, so that the upper arm does not feel compressed. After the tightness of the cuff is adjusted, the main machine discharges the gas in the inflatable belt through the second hose. After the air in the inflatable belt is exhausted, the proper distance is kept between the cuff and the upper arm. At this time, the tester clicks the start button on the host computer, and the host computer inflates air into the cuff through the hose to start the blood pressure test.
Usually, the length of the cuff is 2/3-3/2 of the circumference of the upper arm, in order to ensure the accuracy of the measurement result, the length of the second inflatable belt is smaller than the circumference of the upper arm, and the length of the second inflatable belt is 1/2-2/3 of the length of the cuff.
The arrangement of the inflatable belt provides a proper reference for a tester to adjust the tightness of the cuff, so that the tester can adjust the cuff to a proper value conveniently, and the accuracy of a measurement result is improved.
The inflatable belts I, the inflatable belts V and the inflatable belts III are distributed along the length direction of the cuff and are separated from each other by a certain distance.
The air source for inflating the inflatable belt comes from the air pump for inflating the cuff in the main machine, and the arrangement mode of the hose II and the one-way valve required by inflating the inflatable belt is the same as that of the hose I and the one-way valve required by inflating the cuff; the arrangement mode of the exhaust valve required by the inflation belt to exhaust is the same as that of the exhaust valve required by the cuff to exhaust, and the detailed description is omitted here.
Furthermore, one end of the cuff is provided with a clamping ring, the other end of the cuff is provided with a blocking part, and the height of the blocking part is greater than that of the clamping ring.
Under a normal state, one end of the cuff, which is far away from the clamping ring, penetrates through the clamping ring, and due to the blocking effect of the blocking part, the two ends of the cuff are clamped together and are kept in an annular shape; when the tester uses, can cover annular sleeve area on the upper arm with one hand, make things convenient for tester's operation.
Furthermore, the blocking part is made of elastic material.
The blocking part is made of elastic materials, when the two ends of the cuff are required to be separated, the blocking part is extruded, the volume of the blocking part is changed, the blocking part can be extracted from the clamping ring, and the separation of the two ends of the cuff is realized.
Further, a motor control circuit connected with the main control circuit is arranged inside the host, as shown in fig. 3, the motor control circuit comprises a triode Q2, an optocoupler U1 and a darlington tube Q1 which are connected in sequence, a base of the triode Q2 is connected with a PWM output end of the Q6 main control circuit, an emitter of the triode Q2 is connected with a power supply VCC, a collector of the triode Q2 is connected with an input end of the optocoupler U1, an output end of the Q6 optocoupler U1 is connected with a base of the darlington tube Q1, an emitter of the Q6 darlington tube Q1 is connected with a VDD power supply through a resistor R1, a collector of the Q6 darlington tube Q1 is grounded, an emitter of the Q6 darlington tube Q1 is further connected with a positive power supply end of the motor M, and a negative power supply end of the motor M is grounded.
When the cuff or the inflation band needs to be inflated, the main control circuit outputs a control signal, the triode Q2 is conducted, the optocoupler U1 is conducted, the Darlington tube Q1 is conducted, the air pump M is electrified, and the cuff or the inflation band begins to be inflated; the optocoupler U1 plays a role in electrical isolation, and external interference signals are prevented from entering the main control circuit, so that the reliable work of the main control circuit is ensured; the control signal of the main control circuit is amplified by the Darlington tube Q1 to drive the air pump, and the circuit has simple structure and low cost.
Further, as shown in fig. 3, the negative power supply terminal of the motor M is grounded through a resistor R4, the far-end of the resistor R4 is connected to the non-inverting input terminal of the operational amplifier U4B, the inverting input terminal of the Q6 operational amplifier U4B is connected to the reference voltage VREF, and the output terminal of the Q6 operational amplifier U4B is connected to the IO port of the Q6 main control circuit.
The resistor R4 is connected in series with the air pump M, the current flowing through the air pump M generates a voltage UR1 on the resistor R4, and the voltage UR1 is input to the non-inverting input end of the operational amplifier U4B. When the air pump M is in a working state, the voltage UR1 is greater than the reference voltage VREF, and the operational amplifier U4B outputs a high level; on the contrary, when the air pump M does not work, the voltage UR1 is smaller than the reference voltage VREF, and the operational amplifier U4B outputs a low level; the output end of the operational amplifier U4B is connected to the main control circuit, and the main control circuit calculates the actual working time of the blood pressure monitor of the embodiment by calculating the high level time.
When the service life of the blood pressure detector is determined, factory leaving time and actual working time can be considered, and the service life of the blood pressure detector with shorter actual working time can be properly prolonged; on the contrary, the blood pressure detector with longer actual working time can properly reduce the service life; compared with the method of simply determining the service life by the factory time, the method has the advantages that the detection precision is guaranteed, and meanwhile, the waste of resources is avoided.
Further, the reference source circuit is further included, as shown in fig. 3, the reference source circuit includes a resistor R6 and a potentiometer RP1 which are connected in series, one end of the resistor R6 is connected with a power supply VDD, one end of the potentiometer RP1 is grounded, and a sliding end of the potentiometer RP1 is used as a reference voltage VREF and is connected to an inverting input end of the Q6 operational amplifier U4B.
The resistor R6 and the potentiometer RP1 are connected in series between a power supply VDD and the ground to form a resistor voltage dividing circuit, the divided voltage of the potentiometer RP1 is output as reference voltage VREF, the reference voltage VREF can be adjusted by adjusting the resistance value of the potentiometer RP1, and the circuit is simple in structure and low in cost.
Further, a power switching circuit is further arranged in the host, as shown in fig. 4, the power switching circuit includes a triode Q7, a diode D1 and a diode D2, an emitter of the triode Q7 is connected with an anode of the battery B1, a base of the triode Q7 is connected with the power supply 3.3V through a diode D1 and a resistor R9 in sequence, a collector of the triode Q7 is connected with a cathode of the diode D2, an anode of the diode D2 is connected with the power supply 3.3V, and a cathode of the diode D2 is used as an output of the power switching circuit to supply power to circuit elements in the host.
The embodiment is a portable product, and the portable product is powered by a battery and is convenient to use at any time; meanwhile, the power adapter is further arranged in the embodiment, and a user can supply power to the embodiment by externally connecting the alternating-current power supply through the power adapter on the occasion of the alternating-current power supply. The output voltage of the battery B1 is 3V, the output voltage of the power adapter is 3.3V, the emitter of the triode Q7 is connected with the battery B1, the base of the triode Q7 is connected with the power supply of 3.3V, when an external power supply exists, the emitter junction of the triode Q7 is reversely biased, the triode Q7 is turned off, the diode D2 is conducted, and the power supply of 3.3V is used for supplying power for subsequent electric equipment; when the external power supply is disconnected, the emitter junction of the triode Q7 is forward biased, the triode Q7 is conducted, the battery B1 supplies power for subsequent electric equipment, and the diode D2 is cut off, so that the current of the battery B1 is prevented from flowing back to the power adapter. When the battery B1 supplies power to the subsequent electric equipment, the diode D1 and the resistor R10 supply bias current to the transistor Q7, and when the electric quantity of the battery B1 is lower than a set value, the bias current is too small, the transistor Q7 is disconnected, the battery B1 stops supplying power to the subsequent electric equipment, and the battery B1 is prevented from being over-discharged.
Further, an automatic power-off circuit is further arranged in the host, as shown in fig. 5, the automatic power-off circuit includes a transistor Q4 and a transistor Q6, a collector of the transistor Q4 is connected with an output PWR _ SEL of the power switching circuit, a base of the transistor Q4 is connected with a collector of a transistor Q6 sequentially through a resistor R5 and a resistor R7, a base of the transistor Q6 is connected with a Q6 main control circuit, an emitter of the transistor Q6 is grounded, a series connection of the resistor R5 and a resistor R7 is connected with one end of the button KEY1, the other end of the button KEY1 is grounded through a capacitor C1, a far end of the capacitor C1 of the Q6 is connected with a collector of the transistor Q4 through the resistor R8, and a collector of the transistor Q4 is used as an output end of the automatic power-off circuit to supply power to circuit elements in the host.
In the initial state, the transistor Q4 and the transistor Q6 are both turned off, and the main control circuit is disconnected from the battery B1 and the power adapter. When a tester presses the button KEY1, because the terminal voltage of the capacitor C1 can not suddenly change, the output PWR _ SEL of the power supply switching circuit charges the capacitor C1 through the emitter junction of the transistor Q4, the resistor R5 and the button KEY1, the transistor Q4 quickly enters a saturated state due to obtaining a large bias current, and the output PWR _ SEL of the power supply switching circuit supplies power to the main control circuit through the transistor Q4. When the main control circuit is electrified and starts working, the main control circuit outputs a control signal SW to the triode Q6, the triode Q6 is conducted, at the moment, even if the button KEY1 is released, the triode Q6 can still provide a bias current for the triode Q4, the triode Q4 is continuously conducted in a saturation mode, and the circuit enters a stable working state.
If the main control circuit does not receive the instruction input of the tester within the set time, the tester is judged to be used completely, the main control circuit outputs a control signal SW to the base electrode of the triode Q6, the triode Q6 is turned off, the triode Q4 cannot be continuously provided with the bias current, the triode Q4 is turned off, the output PWR _ SEL of the power supply switching circuit stops supplying power to the main control circuit, and accordingly, other electric equipment is powered off, and the equipment is prevented from being in a power-on standby state for a long time.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A portable blood pressure detector comprises a host and a cuff, wherein the host is communicated with the cuff through a first hose, and the portable blood pressure detector is characterized in that a first inflatable belt, a second inflatable belt, a third inflatable belt, a fourth inflatable belt and a fifth inflatable belt which are communicated with each other are arranged on the inner surface of the cuff, the first inflatable belt and the third inflatable belt are parallel to the width direction of the cuff, the second inflatable belt and the fourth inflatable belt are parallel to the length direction of the cuff, one end of the fifth inflatable belt is communicated with the middle of the second inflatable belt, the other end of the fifth inflatable belt is communicated with the middle of the fourth inflatable belt, the middle of the second inflatable belt is communicated with the host through a second hose,
the length of the second inflatable belt is 1/2-2/3 of the length of the cuff.
2. The portable blood pressure monitor according to claim 1, wherein the cuff is provided with a snap ring at one end thereof and a stopper at the other end thereof, and the height of the stopper is greater than that of the snap ring.
3. The portable blood pressure monitor according to claim 2, wherein the stopper is made of an elastic material.
4. The portable blood pressure monitor according to claim 1, wherein the host is internally provided with a motor control circuit connected with the main control circuit, the motor control circuit comprises a triode Q2, an optocoupler U1 and a darlington tube Q1 which are sequentially connected, a base of the triode Q2 is connected with a PWM output end of the main control circuit, an emitter of the triode Q2 is connected with a power VCC, a collector of the triode Q2 is connected with an input end of an optocoupler U1, an output end of the optocoupler U1 is connected with a base of the darlington tube Q1, an emitter of the darlington tube Q1 is connected with a power VDD through a resistor R1, a collector of the darlington tube Q1 is grounded, an emitter of the darlington tube Q1 is further connected with a positive power supply end of the motor M, and a negative power supply end of the motor M is grounded.
5. The portable blood pressure monitor according to claim 4, wherein the negative power supply terminal of the motor M is grounded through a resistor R4, the far ground terminal of the resistor R4 is connected to the non-inverting input terminal of the operational amplifier U4B, the inverting input terminal of the operational amplifier U4B is connected to the reference voltage VREF, and the output terminal of the operational amplifier U4B is connected to the IO port of the main control circuit.
6. The portable blood pressure monitor according to claim 5, further comprising a reference source circuit, wherein the reference source circuit comprises a resistor R6 and a potentiometer RP1 connected in series, one end of the resistor R6 is connected to a power supply VDD, one end of the potentiometer RP1 is grounded, and a sliding end of the potentiometer RP1 is used as a reference voltage VREF and is connected to an inverting input terminal of the operational amplifier U4B.
7. The portable blood pressure monitor according to claim 4, wherein a power switching circuit is further disposed in the host, the power switching circuit includes a transistor Q7, a diode D1 and a diode D2, an emitter of the transistor Q7 is connected to a positive electrode of the battery B1, a base of the transistor Q7 is connected to the power supply of 3.3V through a diode D1 and a resistor R9 in sequence, a collector of the transistor Q7 is connected to a cathode of the diode D2, an anode of the diode D2 is connected to the power supply of 3.3V, and a cathode of the diode D2 is used as an output of the power switching circuit to supply power to the circuit elements in the host.
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| CN202110613858.5A CN113331807B (en) | 2021-06-02 | 2021-06-02 | Portable blood pressure detector |
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| CN202110613858.5A CN113331807B (en) | 2021-06-02 | 2021-06-02 | Portable blood pressure detector |
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| CN113331807B CN113331807B (en) | 2023-07-28 |
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| US20170245769A1 (en) * | 2016-02-29 | 2017-08-31 | Fitbit, Inc. | Intelligent inflatable cuff for arm-based blood pressure measurement |
| CN205493814U (en) * | 2016-03-30 | 2016-08-24 | 河南工业职业技术学院 | Portable sphygmomanometer of electron |
| CN209733975U (en) * | 2018-09-17 | 2019-12-06 | 华中科技大学同济医学院附属协和医院 | Blood pressure cuff |
| CN210644016U (en) * | 2019-05-24 | 2020-06-02 | 可孚医疗科技股份有限公司 | Automatic detection device of electronic sphygmomanometer |
| CN211058946U (en) * | 2019-09-09 | 2020-07-21 | 天津明硕机电设备股份有限公司 | Hydraulic turbine speed regulator signal processing circuit |
| CN110522435A (en) * | 2019-09-25 | 2019-12-03 | 宁波智能装备研究院有限公司 | A method of detection electronic sphygmomanometer cuff bundlees elasticity |
| CN210225033U (en) * | 2019-09-30 | 2020-03-31 | 深圳市芯明源科技有限公司 | Switching circuit for charging circuit |
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| CN113331807B (en) | 2023-07-28 |
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