CN111772609A - Device for reducing air flow fluctuation in blood pressure detection air circuit - Google Patents
Device for reducing air flow fluctuation in blood pressure detection air circuit Download PDFInfo
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- CN111772609A CN111772609A CN202010557623.4A CN202010557623A CN111772609A CN 111772609 A CN111772609 A CN 111772609A CN 202010557623 A CN202010557623 A CN 202010557623A CN 111772609 A CN111772609 A CN 111772609A
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
- F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
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- Engineering & Computer Science (AREA)
- Vascular Medicine (AREA)
- Heart & Thoracic Surgery (AREA)
- Animal Behavior & Ethology (AREA)
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- Veterinary Medicine (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ophthalmology & Optometry (AREA)
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
- External Artificial Organs (AREA)
Abstract
The invention relates to a device for reducing air flow fluctuation in a blood pressure detection air circuit, which at least comprises: the airflow stabilizing container unit is provided with an airflow inlet and an airflow outlet, adopts an inclined surface design and is beneficial to the smooth flow of airflow entering the container; the airflow stabilizing container unit is provided with a first air conveying pipe and a second air conveying pipe; the air flow inlet is communicated with the inflator pump unit by means of the first air conveying pipe; the air flow outlet is communicated with the sensor unit by means of the second air delivery pipe. The device provided by the invention can enable the blood pressure air pump to firstly pass through the buffer memory of the airflow stabilizing device in the inflating process and then to be supplied to the sensor, thereby greatly improving the detection precision and accuracy in the electronic blood pressure measuring process.
Description
Technical Field
The invention belongs to the technical field of blood pressure detection, and particularly relates to a device for reducing air flow fluctuation in a blood pressure detection air circuit.
Background
In the non-invasive blood pressure electronic detection technology, how to obtain stable inflation airflow and reducing the airflow fluctuation in the blood pressure inflation process are the key points for obtaining accurate and stable blood pressure detection results.
In the prior art, the fluctuation of inflation airflow is easily caused in the inflation process of a blood pressure inflation circuit, a great deal of noise is brought to information acquired by a blood pressure sensor, and the precision of blood pressure detection is influenced, such as the blood pressure detection precision of an ascending measurement mode; and the judgment effectiveness of stopping charging in the intelligent boosting process of the descending measurement mode.
Disclosure of Invention
Technical problem to be solved
In order to solve the above problems in the prior art, the present invention provides a device for reducing air flow fluctuation in a blood pressure detection air circuit, so that a blood pressure air pump firstly passes through the buffer memory of an air flow stabilizing device during the inflation process, and then is supplied to a sensor.
(II) technical scheme
In order to achieve the purpose, the invention adopts the main technical scheme that:
a device for reducing air flow fluctuation in a blood pressure detection air circuit at least comprises: the airflow stabilizing container unit is provided with an airflow inlet and an airflow outlet, adopts an inclined surface design and is beneficial to the smooth flow of airflow entering the container;
the airflow stabilizing container unit is provided with a first air conveying pipe and a second air conveying pipe;
the air flow inlet is communicated with the inflator pump unit by means of the first air conveying pipe;
the air flow outlet is communicated with the sensor unit by means of the second air delivery pipe.
Preferably, the gas flow stabilizing container unit includes a gas container body and two connection pipes;
the gas container body comprises a first end and a second end;
the two connecting pipes are arranged at the first end and are communicated with the inside of the air capacitor body;
the two connecting pipes are respectively provided with the airflow inlet and the airflow outlet.
Preferably, the side surface of the air container body is a right trapezoid;
the first end is larger in size than the second end;
a buffer groove is further formed in the central area of the first end;
the two connecting pipes I are arranged on the first end in a manner of centrosymmetry.
Preferably, the method further comprises the following steps: an inflator unit and a sensor unit;
the airflow stabilizing container unit is respectively connected with the inflator pump unit and the sensor unit;
the inflator pump unit can flush airflow into the airflow stabilizing container unit and process the airflow by means of the airflow stabilizing container unit to obtain stable sensing airflow;
the airflow stabilizing container unit can stably deliver the sensing airflow to the sensor unit.
Preferably, the sensor unit includes: a piezoresistive sensor;
when the metal wire of the piezoresistive sensor is impacted by airflow and changes, the resistance can synchronously change, and pressure change data is obtained according to the change of the resistance.
Preferably, the width and height of the gas container body are equal;
the ratio of the width to the length of the gas container body is 7: 29.
Preferably, an air outlet on the second air conveying pipe is connected with an air flow conduit;
the air flow duct is connected with the sensor unit and the inflatable cuff.
Preferably, the air flow stabilizing container unit is capable of stably delivering the sensing air flow to the sensor unit and the inflatable cuff, respectively.
(III) advantageous effects
The invention has the beneficial effects that: the device for reducing the air flow fluctuation in the blood pressure detection air path can greatly improve the detection precision and accuracy in the electronic blood pressure measurement process.
Drawings
FIG. 1 is a side view of a gas flow stabilizing container unit in a device for reducing fluctuation in gas flow in a blood pressure test circuit according to the present invention;
FIG. 2 is a top view of an airflow stabilizing container unit in the device for reducing airflow fluctuation in the blood pressure detecting airway according to the present invention;
fig. 3 is a schematic diagram of a sensor unit in the device for reducing air flow fluctuation in the blood pressure detection circuit provided by the invention.
Detailed Description
For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail by way of specific embodiments with reference to the accompanying drawings.
As shown in fig. 1 and 2: this implementation discloses a device that reduces air current fluctuation in blood pressure test gas circuit, includes at least: the airflow stabilizing container unit is provided with an airflow inlet and an airflow outlet, adopts an inclined surface design and is beneficial to the smooth flow of airflow entering the container; the airflow stabilizing container unit is provided with a first air conveying pipe and a second air conveying pipe; the air flow inlet is communicated with the inflator pump unit by means of the first air conveying pipe; the air flow outlet is communicated with the sensor unit by means of the second air delivery pipe.
In the embodiment, a container device comprising an air inlet and an air outlet is added, and the air container adopts an inclined plane design, so that the air can smoothly flow into the container.
In detail, the air flow stabilizing container unit in this embodiment includes an air containing body and two connection pipes.
Wherein the gas containment body comprises a first end and a second end; the two connecting pipes are arranged at the first end and are communicated with the inside of the air capacitor body; the two connecting pipes are respectively provided with the airflow inlet and the airflow outlet.
The device for reducing air flow fluctuation in the blood pressure detection air path provided in this embodiment further includes: an inflator unit and a sensor unit.
The airflow stabilizing container unit is respectively connected with the inflator pump unit and the sensor unit; the inflator pump unit can flush airflow into the airflow stabilizing container unit and process the airflow by means of the airflow stabilizing container unit to obtain stable sensing airflow;
the airflow stabilizing container unit can stably deliver the sensing airflow to the sensor unit.
Specifically, the two connection pipes in this embodiment are used to connect the inflator unit and the sensor unit therein, respectively.
Specifically, as shown in fig. 3: the sensor unit includes: a piezoresistive sensor.
When the metal wire of the piezoresistive sensor is impacted by airflow and changes, the resistance can synchronously change, and pressure change data is obtained according to the change of the resistance.
The phenomenon that the resistance value of the strain resistor adsorbed on the substrate material changes along with the mechanical deformation is commonly called as resistance strain effect. Taking a metal wire strain resistor as an example, when the metal wire is under the action of an external force, the length and the sectional area of the metal wire are changed, and the resistance value of the metal wire is changed. When the wire is compressed by an external force, the length is reduced and the cross section is increased, and the resistance value is reduced. The strain of the strain wire and thus the change in pressure can be obtained by measuring the change in the resistance (usually by measuring the voltage across the resistance).
The function of the inflator unit in this embodiment: the air pump inflates and pressurizes the cuff, and the inflated cuff is used for compressing the arterial blood vessel to enable the arterial blood vessel to be in a completely closed state. Then the deflation valve is opened to slowly reduce the pressure in the cuff. With the pressure in the cuff falling, the artery blood vessel is in the change process of complete occlusion-gradual opening-full opening. And obtaining the diastolic pressure, the systolic pressure and the average pressure of the human body according to a software algorithm accumulated by experience.
The principle of the inflator pump is as follows: the circular motion of the motor makes the diaphragm inside the pump do reciprocating motion through a mechanical device, so that air in the pump cavity with fixed volume is compressed and stretched to form vacuum (negative pressure), pressure difference is generated between the pump suction port and the external atmospheric pressure, and gas pressure (suction) is sucked into the pump cavity under the action of the pressure difference and then is discharged from the exhaust port.
In this embodiment, the side surface of the air volume body is a right trapezoid; the first end is larger in size than the second end.
A buffer groove is further formed in the central area of the first end; the two connecting pipes I are arranged on the first end in a manner of centrosymmetry.
The width and the height of the gas container body are equal in the embodiment; the ratio of the width to the length of the gas container body is 7: 29.
In the embodiment, the air outlet of the second air conveying pipe is connected with the air flow conduit; the air flow duct is connected with the sensor unit and the inflatable cuff.
Specifically, the air flow stabilization container unit can stably deliver the sensing air flow to the sensor unit and the inflatable cuff, respectively.
The technical principles of the present invention have been described above in connection with specific embodiments, which are intended to explain the principles of the present invention and should not be construed as limiting the scope of the present invention in any way. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive efforts, which shall fall within the scope of the present invention.
Claims (8)
1. A device for reducing air flow fluctuation in a blood pressure detection air path is characterized by at least comprising: the airflow stabilizing container unit is provided with an airflow inlet and an airflow outlet, adopts an inclined surface design and is beneficial to the smooth flow of airflow entering the container;
the airflow stabilizing container unit is provided with a first air conveying pipe and a second air conveying pipe;
the air flow inlet is communicated with the inflator pump unit by means of the first air conveying pipe;
the air flow outlet is communicated with the sensor unit by means of the second air delivery pipe.
2. The device for reducing air flow fluctuation in a blood pressure test circuit according to claim 1,
the air flow stabilizing container unit comprises an air volume body and two connecting pipes;
the gas container body comprises a first end and a second end;
the two connecting pipes are arranged at the first end and are communicated with the inside of the air capacitor body;
the two connecting pipes are respectively provided with the airflow inlet and the airflow outlet.
3. The device for reducing air flow fluctuation in a blood pressure test circuit according to claim 2,
the side surface of the air volume body is in a right-angled trapezoid shape;
the first end is larger in size than the second end;
a buffer groove is further formed in the central area of the first end;
the two connecting pipes I are arranged on the first end in a manner of centrosymmetry.
4. The device for reducing air flow fluctuation in a blood pressure test circuit according to claim 3,
further comprising: an inflator unit and a sensor unit;
the airflow stabilizing container unit is respectively connected with the inflator pump unit and the sensor unit;
the inflator pump unit can flush airflow into the airflow stabilizing container unit and process the airflow by means of the airflow stabilizing container unit to obtain stable sensing airflow;
the airflow stabilizing container unit can stably deliver the sensing airflow to the sensor unit.
5. The device for reducing air flow fluctuation in a blood pressure test circuit according to claim 3,
the sensor unit includes: a piezoresistive sensor;
when the metal wire of the piezoresistive sensor is impacted by airflow and changes, the resistance can synchronously change, and pressure change data is obtained according to the change of the resistance.
6. The device for reducing air flow fluctuation in a blood pressure test circuit according to claim 3,
the width and the height of the gas container body are equal;
the ratio of the width to the length of the gas container body is 7: 29.
7. The device for reducing air flow fluctuation in a blood pressure test circuit according to claim 3,
an air outlet on the second air delivery pipe is connected with an air flow conduit;
the air flow duct is connected with the sensor unit and the inflatable cuff.
8. The device for reducing air flow fluctuations in a blood pressure monitoring circuit of claim 7,
the air flow stabilization container unit can stably convey sensing air flow to the sensor unit and the inflatable cuff respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010557623.4A CN111772609B (en) | 2020-06-18 | 2020-06-18 | Device for reducing air flow fluctuation in blood pressure detection air circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010557623.4A CN111772609B (en) | 2020-06-18 | 2020-06-18 | Device for reducing air flow fluctuation in blood pressure detection air circuit |
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| Publication Number | Publication Date |
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| CN111772609A true CN111772609A (en) | 2020-10-16 |
| CN111772609B CN111772609B (en) | 2022-08-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010557623.4A Active CN111772609B (en) | 2020-06-18 | 2020-06-18 | Device for reducing air flow fluctuation in blood pressure detection air circuit |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150088009A1 (en) * | 2013-09-23 | 2015-03-26 | Koven Technology | Semi-automatic sphygmomanometer system |
| CN105146988A (en) * | 2015-08-21 | 2015-12-16 | 无锡伊佩克科技有限公司 | Electric blanket based on pressure sensitive automatic switch |
| CN206630607U (en) * | 2016-10-14 | 2017-11-14 | 广州视源电子科技股份有限公司 | A kind of feeder and sphygmomanometer |
| CN109044308A (en) * | 2018-07-26 | 2018-12-21 | 优弘智能医疗设备（重庆）有限公司 | A kind of Wrist-cuff device |
| CN209332042U (en) * | 2018-07-03 | 2019-09-03 | 南京康聚医疗器械有限公司 | A kind of oversleeve has the sphygmomanometer of pooling feature |
| CN210293831U (en) * | 2019-07-18 | 2020-04-10 | 佛山宇隆博环保科技有限公司 | Buffering gas capacity and gas sampling system |
-
2020
- 2020-06-18 CN CN202010557623.4A patent/CN111772609B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150088009A1 (en) * | 2013-09-23 | 2015-03-26 | Koven Technology | Semi-automatic sphygmomanometer system |
| CN105146988A (en) * | 2015-08-21 | 2015-12-16 | 无锡伊佩克科技有限公司 | Electric blanket based on pressure sensitive automatic switch |
| CN206630607U (en) * | 2016-10-14 | 2017-11-14 | 广州视源电子科技股份有限公司 | A kind of feeder and sphygmomanometer |
| CN209332042U (en) * | 2018-07-03 | 2019-09-03 | 南京康聚医疗器械有限公司 | A kind of oversleeve has the sphygmomanometer of pooling feature |
| CN109044308A (en) * | 2018-07-26 | 2018-12-21 | 优弘智能医疗设备（重庆）有限公司 | A kind of Wrist-cuff device |
| CN210293831U (en) * | 2019-07-18 | 2020-04-10 | 佛山宇隆博环保科技有限公司 | Buffering gas capacity and gas sampling system |
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| CN111772609B (en) | 2022-08-16 |
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