CN211094070U - Simple blood pressure measuring device based on flat tension method - Google Patents
Simple blood pressure measuring device based on flat tension method Download PDFInfo
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- CN211094070U CN211094070U CN201921422254.7U CN201921422254U CN211094070U CN 211094070 U CN211094070 U CN 211094070U CN 201921422254 U CN201921422254 U CN 201921422254U CN 211094070 U CN211094070 U CN 211094070U
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Abstract
The utility model discloses a simple and easy blood pressure measuring device based on flat tension method, include: the pressure sensing unit consists of two pressure sensors which are back to back in the vertical direction; the processing unit is connected with the pressure sensor and used for calculating a blood pressure value; the display unit is connected with the processing unit and used for displaying the blood pressure information; the shell is worn on the wrist, the processing unit is arranged in the shell, the display unit is arranged on the surface of the shell, and the pressure sensing unit is arranged on one side of the shell, which is far away from or close to the palm; and the watchband is arranged on the other two sides of the shell and surrounds the wrist when being worn. The device is similar to a watch, can be driven by batteries such as a lithium battery and the like, mainly detects pulse and finger pressure through a pressure sensing unit, and is displayed on a display unit after being calculated by a processing unit. The beneficial effects of the utility model include: the blood pressure measuring device is comfortable to wear, simple in structure, easy and convenient to operate, rapid and accurate in measurement, and capable of playing a good blood pressure measuring reference role at ordinary times.
Description
Technical Field
The utility model relates to a blood pressure check field, in particular to simple and easy blood pressure measuring device based on flat tension method.
Background
The importance of blood pressure determination goes without saying. The existing blood pressure measuring methods mainly comprise two methods: the invasive measurement method comprises the steps of conveying a catheter into an aorta through puncture to directly measure a blood pressure value; the method adopts a sphygmomanometer, and mercury columns are most commonly used.
As published (bulletin) No.: the utility model of CN205493814U discloses an electronic portable sphygmomanometer, which comprises a wrist strap, a sphygmomanometer body and a gas conduit, wherein the sphygmomanometer body and the wrist strap are connected into a whole through the gas conduit, and the wrist strap is of a foldable structure; the sphygmomanometer body comprises a sphygmomanometer shell, and a display device is arranged on the front surface of the sphygmomanometer shell; the back of the sphygmomanometer shell comprises an accommodating cavity and a foot pad, and the accommodating cavity comprises a groove and a cover plate which are positioned on the back of the sphygmomanometer shell; the groove is in pivot connection with the cover plate, and the cover plate is provided with a vent hole; the foot pad is arranged at the corner position of the back of the sphygmomanometer shell; the left side surface of the sphygmomanometer shell is provided with a gas conduit interface, an SD card inserting port and a USB interface.
Besides, the non-invasive measurement method also has a blood pressure measuring device developed according to the principles of a volume method and a flat tension method. The principle of the blood volume method is that an air bag is arranged at the root of a finger, a photoelectric transducer is arranged at the finger, an air pump controls the air charging and discharging of the air bag, the photoelectric transducer detects the change of the blood volume of the finger in the air charging and discharging process of the air bag, and the change of the blood volume is detected by detecting the change of the light transmittance after light penetrates through tissues. The output signal of the blood volume change detected by the photoelectric transducer is processed together with the pressure signal in the air bag, so that the blood pressure value can be calculated. The applanation tension method is mainly suitable for superficial arteries such as the radial artery, and is applied with external pressure to enable the superficial arteries to be in a flat state, wherein the external pressure is in direct proportion to the pressure in the artery, and the blood pressure value is obtained through the maximum signal and the minimum signal of the radial artery.
The method for measuring blood pressure by using the flat tension method is a simple and easy method, but because pressure loss exists in the process that blood pressure signals are transmitted to a pressure sensor through tissues such as tendons, skin and the like, and the skin condition and the artery depth of each person are different, the loss value needs to be reduced, the measurement precision can be ensured, and even the monitoring positions are slightly different, the result difference is large. Therefore, the blood pressure equipment manufactured by the existing flat tension method measuring principle has poor measuring accuracy, large and unstable result change, complicated design and inconvenient carrying.
SUMMERY OF THE UTILITY MODEL
To prior art measurement accuracy than relatively poor, the result changes greatly, and is unstable, and the design is all more complicated moreover, the problem of not portable, the utility model provides a simple and easy blood pressure measuring device based on flat tension method.
The technical scheme of the utility model is as follows.
A simple blood pressure measuring device based on a flat tension method comprises: the pressure sensing unit consists of two pressure sensors which are back to back in the vertical direction; the processing unit is connected with the pressure sensor and used for calculating a blood pressure value; the display unit is connected with the processing unit and used for displaying the blood pressure information; the shell is worn on the wrist, the processing unit is arranged in the shell, the display unit is arranged on the surface of the shell, and the pressure sensing unit is arranged on one side of the shell, which is far away from or close to the palm; and the watchband is arranged on the other two sides of the shell and surrounds the wrist when being worn. The device is similar to a watch, can be driven by batteries such as a lithium battery and the like, mainly detects pulse and finger pressure through a pressure sensing unit, and is displayed on a display unit after being calculated by a processing unit. The reading is accurate and easy to carry.
The scheme is based on the measurement principle of a flat tension method, algorithm improvement is not needed, in two pressure sensors, one positioned below the two pressure sensors is used for sensing the pressure of pulsation of an artery, one positioned above the two pressure sensors is used for sensing the pressure of pressing of fingers, and the pressure of pulsation is proportional to the blood pressure, so that the blood pressure can be calculated according to a pulse pulsation pressure gauge after calibration. When the blood pressure is stably pressed for a certain time after a certain pressure is reached, the blood pressure value can be read, and the blood pressure value is the maximum value of the systolic pressure. Because a pressure sensor detects the pressure of the finger, the pressure of each finger pressing can be ensured to be consistent with the pressure during correction, the change of the blood pressure can be detected under the condition that other conditions are not changed, and the device can be calibrated once at intervals to ensure the accurate reading.
Preferably, the shell is internally provided with a scale which is arranged on one side of the shell close to the palm, and the scale is connected with the shell in a sliding manner. Because the accuracy of measurement receives the influence of measuring position, if measuring the position difference at every turn, can lead to the reading inaccurate, consequently need take notes measuring position, when using, takes out the scale, and the equal alignment position of record casing to palm root can each time measuring.
Preferably, the pressure sensor is a piezoresistive sensor. The piezoresistive sensor is formed by utilizing the piezoresistive effect of single crystal silicon. A monocrystalline silicon wafer is used as an elastic element, a group of equivalent resistors are diffused in a specific direction of monocrystalline silicon on the monocrystalline silicon wafer by utilizing the process of an integrated circuit, the resistors are connected into a bridge circuit, and the monocrystalline silicon wafer is arranged in a sensor cavity. When the pressure changes, the monocrystalline silicon generates strain, so that the strain resistance directly diffused on the monocrystalline silicon generates change in direct proportion to the measured pressure, and then a bridge circuit obtains a corresponding voltage output signal. The sensor has mature technology and small volume.
Preferably, the display unit is a touch screen.
Preferably, the pressure sensing unit is connected with the shell through a plurality of soft pipe bodies, and wires are distributed in the pipe bodies. Because the pressure sensing unit needs to be pressed when in use, the pressure sensing unit cannot be in hard connection with the shell, otherwise the effect of the pressure can be influenced. The soft tube body ensures the safety of the lead and cannot be influenced by the shell when being pressed.
Preferably, the length of the soft tube is not less than 0.5cm and not more than 2 cm. The flexibility can not be guaranteed to the body is too short, and the overlength leads to easily damaging and influence wearing experience when ordinary wearing, consequently preferably uses above-mentioned interval scope.
Preferably, a surface of the pressure sensor located on an upper side of the pressure sensor is provided with a fingerprint-like groove. The groove can facilitate finger pressing.
The beneficial effects of the utility model include: the blood pressure measuring device is comfortable to wear, simple in structure, easy and convenient to operate, rapid and accurate in measurement, and capable of playing a good blood pressure measuring reference role at ordinary times.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
fig. 2 is a top view of an embodiment of the present invention;
the figure includes: 1-a pressure sensing unit, 2-a shell, 3-a touch screen, 4-a watchband and 5-a ruler.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better understanding of the present invention. It will be understood by those skilled in the art that the present invention may be practiced without some of these specific details. In some instances, methods, means, elements and circuits that are well known to those skilled in the art have not been described in detail so as not to obscure the present invention.
In the following, the terms "first", "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present embodiment, "a plurality" means two or more unless otherwise specified.
Example (b):
as shown in fig. 1 and 2, a simple blood pressure measuring apparatus based on the applanation tension method includes: the pressure sensing unit 1 consists of two pressure sensors which are back-to-back in the vertical direction; the processing unit is connected with the pressure sensor and used for calculating a blood pressure value; the touch screen 3 serving as a display unit is connected with the processing unit and used for displaying blood pressure information; the shell 2 is worn on the wrist, the processing unit is arranged in the shell 2, the touch screen 3 is arranged on the surface of the shell 2, and the pressure sensing unit 1 is arranged on one side of the shell 2 away from the palm; and a band 4 disposed on the other two sides of the case 2 and surrounding the wrist when worn. This device is similar to the wrist-watch, can be by battery drive such as lithium cell, mainly detect pulse and finger pressure through pressure sensing unit 1, calculate the back by processing unit and show at display element. The reading is accurate and easy to carry.
The embodiment is based on the measurement principle of a flat tension method, algorithm improvement is not needed, in the two pressure sensors, the first pressure sensor is positioned at the lower side and used for sensing the pressure of artery pulsation, the second pressure sensor is positioned at the upper side and used for sensing the pressure pressed by fingers, and the pressure of the pulse pulsation is proportional to the blood pressure, so that the blood pressure can be calculated according to the pulse pulsation pressure after calibration, when the pressure sensing unit 1 is used, the pressure sensing unit is placed on the surface of an artery of a wrist and is tightly attached to the skin, the second pressure sensor is pressed by a thumb, and at the moment, the processing unit can calculate the pulsation pressure and the thumb pressing pressure and then display the calculated pressure on the display unit. When the blood pressure is stably pressed for a certain time after a certain pressure is reached, the blood pressure value can be read, and the blood pressure value is the maximum value of the systolic pressure. The device can be calibrated once at intervals to ensure accurate reading.
Wherein the second pressure sensor surface is provided with a fingerprint-like recess. The groove can facilitate finger pressing.
In addition, a scale 5 is further arranged in the housing 2 of the embodiment, the scale 5 is arranged on one side of the housing 2 close to the palm, and the scale 5 is connected with the housing 2 in a sliding manner. Because the accuracy of measurement receives the influence of measuring position, if measuring the position difference at every turn, can lead to the reading inaccurate, consequently need take notes measuring position, when using, takes out scale 5, and the equal alignment position of record casing 2 to palm root can each time measuring.
Meanwhile, the pressure sensing unit 1 and the shell 2 are connected through two soft tubes, and a wire is arranged in each tube. Since the pressure sensing unit 1 needs to be pressed when in use, the pressure sensing unit 1 cannot be hard-connected with the housing 2, otherwise the effect of the pressure is affected. The soft tube body ensures the safety of the lead and cannot be influenced by the shell when being pressed.
The length of the soft tube of this example was 1 cm. The flexibility can not be guaranteed to the body short excessively, and the overlength easily damages and influences wearing experience when leading to ordinary wearing.
The pressure sensor selected in the embodiment is a piezoresistive sensor. The piezoresistive sensor is formed by utilizing the piezoresistive effect of single crystal silicon. A monocrystalline silicon wafer is used as an elastic element, a group of equivalent resistors are diffused in a specific direction of monocrystalline silicon on the monocrystalline silicon wafer by utilizing the process of an integrated circuit, the resistors are connected into a bridge circuit, and the monocrystalline silicon wafer is arranged in a sensor cavity. When the pressure changes, the monocrystalline silicon generates strain, so that the strain resistance directly diffused on the monocrystalline silicon generates change in direct proportion to the measured pressure, and then a bridge circuit obtains a corresponding voltage output signal. The sensor has mature technology and small volume.
Through the description of the above embodiments, those skilled in the art will understand that, for convenience and simplicity of description, only the division of the above functional modules is used as an example, and in practical applications, the above function distribution may be completed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to complete all or part of the above described functions.
Units described as separate parts may or may not be physically separate, and parts displayed as units may be one physical unit or a plurality of physical units, may be located in one place, or may be distributed to a plurality of different places. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (7)
1. A simple blood pressure measuring device based on a flat tension method is characterized by comprising:
the pressure sensing unit consists of two pressure sensors which are back to back in the vertical direction;
the processing unit is connected with the pressure sensor and used for calculating a blood pressure value;
the display unit is connected with the processing unit and used for displaying the blood pressure information;
the shell is worn on the wrist, the processing unit is arranged in the shell, the display unit is arranged on the surface of the shell, and the pressure sensing unit is arranged on one side of the shell, which is far away from or close to the palm;
and the watchband is arranged on the other two sides of the shell and surrounds the wrist when being worn.
2. The device for measuring blood pressure by applanation tension method as claimed in claim 1, wherein a scale is further provided in the housing, the scale is provided on the side of the housing close to the palm, and the scale is slidably connected to the housing.
3. The applanation-based blood pressure measuring device of claim 1 or 2, wherein the pressure sensor is a piezoresistive sensor.
4. The applanation-based blood pressure measuring device of claim 1 or 2, wherein the display unit is a touch screen.
5. The device for measuring blood pressure based on applanation tension method as claimed in claim 1 or 2, wherein the pressure sensing unit is connected with the housing through a plurality of soft tubes, and the wires are arranged in the tubes.
6. The applanation tension-based simplified blood pressure measurement device as set forth in claim 5, wherein the length of said flexible tube is 0.5cm or more and 2cm or less.
7. The device for measuring blood pressure by applanation tension as claimed in claim 5, wherein the surface of the pressure sensor located on the upper side of the pressure sensor is provided with a fingerprint-like groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921422254.7U CN211094070U (en) | 2019-08-29 | 2019-08-29 | Simple blood pressure measuring device based on flat tension method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921422254.7U CN211094070U (en) | 2019-08-29 | 2019-08-29 | Simple blood pressure measuring device based on flat tension method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211094070U true CN211094070U (en) | 2020-07-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921422254.7U Active CN211094070U (en) | 2019-08-29 | 2019-08-29 | Simple blood pressure measuring device based on flat tension method |
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| Country | Link |
|---|---|
| CN (1) | CN211094070U (en) |
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2019
- 2019-08-29 CN CN201921422254.7U patent/CN211094070U/en active Active
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