A cuff for a sphygmomanometer and a sphygmomanometer

Abstract

The present application relates to a kind of blood pressure meter cuff and blood pressure meter, including cuff body, air bag is provided in the cuff body;Air bag inside is provided with the separator of reticular structure, which separates air bag into upper inflation cavity and lower inflation cavity in horizontal direction;Cuff body is provided with main interface, which is communicated with upper inflation cavity and lower inflation cavity, and the end of main interface away from air bag interior is provided with air pump connecting port for connecting with air pump and sensor connecting port for connecting with sensor;Extension arm of arc structure extends into main interface on separator;Meanwhile, blood pressure meter using the cuff is disclosed.The present application reduces the influence of pressure fluctuation on measurement results, improves the accuracy and stability of blood pressure measurement.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of blood pressure measurement, in particular to a cuff for sphygmomanometer and sphygmomanometer. BACKGROUND

[0002] The electronic sphygmomanometer has the characteristics of simple operation, intuitive display, and does not require a stethoscope and professional personnel, etc. The whole machine is mainly composed of a measurement part, a display part and a cuff. At present, the cuffs of electronic sphygmomanometers on the market are basically composed of a gas bag with a single air hole, which has a simple structure, but such a cuff can easily affect the blood pressure measurement results of patients. During the pressurization process, a large amount of gas enters the gas bag through the air hole in a short time, which will cause pressure fluctuations due to the impact. Moreover, during the pressurization or deflation process, the gas bag will also change with the change of pressure, and then movement may be generated in the bag. These factors will all affect the signal collection, and if the signal is disturbed, the accuracy of the signal will be affected, resulting in inaccurate blood pressure measurement results. SUMMARY

[0003] In view of the above problems, the present application provides a cuff for sphygmomanometer and sphygmomanometer.

[0004] The technical scheme adopted by the present application to solve its technical problems is: a cuff for sphygmomanometer, comprising a cuff body, a gas bag is arranged in the cuff body; a partition piece in a net-like structure is arranged inside the gas bag to divide the gas bag into an upper inflation cavity and a lower inflation cavity in the horizontal direction; a main interface is arranged on the cuff body and communicates with the upper inflation cavity and the lower inflation cavity, one end of the main interface away from the inside of the gas bag is provided with a gas pump connecting port for connecting with a gas pump and a sensor connecting port for connecting with a sensor; an extension arm in an arc-shaped structure extending into the main interface is arranged on the partition piece.

[0005] Preferably, a plurality of elastic deformable protrusions are arranged on the inner wall of the gas bag.

[0006] Preferably, the protrusions are arranged corresponding to the mesh connection of the partition piece and / or corresponding to the position inside the main interface.

[0007] Preferably, one side of the main interface towards the inside of the gas bag is in a flared structure.

[0008] Preferably, the volume of the lower inflation cavity is greater than that of the upper inflation cavity.

[0009] Preferably, one end of the extension arm away from the partition piece is connected to one end of the gas pump connecting port adjacent to the inside of the gas bag and is between the gas pump connecting port and the sensor connecting port.

[0010] Preferably, both the upper and lower ends of the mesh hole on the partition piece are in a flared structure.

[0011] Preferably, the inner wall of the air bag is provided with a damping coating.

[0012] A sphygmomanometer comprising a host connected with a sphygmomanometer cuff according to any one of the preceding claims.

[0013] Preferably, the host comprises a processor, an electric air pump, a solenoid valve and a pressure sensor, all electrically connected with the processor; the air pump connecting port is connected with an air pump connecting pipe, the sensor connecting port is connected with a sensor connecting pipe, the electric air pump is connected with the air pump connecting pipe and the sensor connecting pipe respectively; the solenoid valve and the pressure sensor are installed in the sensor connecting pipe.

[0014] The present application has the advantages that: in the process of pressurization, the impact of gas entering the air bag is effectively alleviated, the pressure fluctuation is reduced, and the sensor detects the gas pressure after buffering and filtering in the air bag, reducing the influence of pressure fluctuation on the measurement result, improving the accuracy and stability of blood pressure measurement. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a schematic diagram of the internal structure of the sphygmomanometer cuff of the present application;

[0016] Figure 2 is a schematic diagram of the structure of the sphygmomanometer of the present application;

[0017] Part names and serial numbers in the figure: 1-sphygmomanometer body 2-air bag 20-upper inflation chamber 21-lower inflation chamber 22-protrusion 3-separator 30-extended arm 31-separator through hole 4-main interface 40-air pump connecting port 41-sensor connecting port 5-damping coating 6-host 60-air pump connecting pipe 61-sensor connecting pipe DETAILED DESCRIPTION

[0018] In order to more clearly illustrate the purposes, technical solutions and advantages of the embodiments of the present application, the present application will be further described below in conjunction with the embodiments, which will be clearly and completely described. Obviously, the described embodiments are part of the embodiments of the present application, not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0019] A sphygmomanometer cuff, such as Figure 1As shown in the figure, it comprises a cuff body 1, a gas bag 2 is arranged in the cuff body 1, the cuff body 1 is made of elastic material, such as nylon, polyester fiber or blended material, the gas bag 2 is arranged in the cuff body 1 and made of rubber or similar elastic material, which expands to exert pressure on the limb when inflated, and a fixing buckle or magic tape is arranged on the cuff body 1 to fix the cuff on the measuring part of the limb; a reticular partition 3 is arranged in the gas bag 2 to divide the gas bag 2 into an upper inflation chamber 20 and a lower inflation chamber 21 in the horizontal direction, the reticular partition 3 means that a plurality of partition through holes 31 are arranged on the reticular partition 3, the plurality of partition through holes 31 form the mesh of the reticular partition 3, the mesh of the reticular partition 3 constitutes a gas flow channel between the upper inflation chamber 20 and the lower inflation chamber 21, the reticular partition 3 is made of the same material as the gas bag 2, the reticular partition 3 is extended from the inner wall of the gas bag 2, which can effectively alleviate the impact of the gas entering the gas bag 2 during the pressurization process, reduce the fluctuation of the gas pressure, the upper and lower ends of the mesh of the reticular partition 3 are in a bell-shaped structure, which reduces the fluctuation of the gas flowing between the upper inflation chamber 20 and the lower inflation chamber 21 through the reticular partition 3; a main interface 4 is arranged on the cuff body 1 and communicates with the upper inflation chamber 20 and the lower inflation chamber 21, the main interface 4 is used to connect the cuff with a host 6, the pressure change in the gas bag 2 is detected by the host 6 to measure the blood pressure, the side of the main interface 4 facing the inside of the gas bag 2 is in a bell-shaped structure, that is, the inner end of the main interface 4 is in a bell-shaped structure, the outer end of the main interface 4 is small in diameter and the inner end gradually increases in diameter, the gas enters the channel with large diameter from the channel with small diameter, which reduces the impact of the gas in the gas bag 2; a gas pump connection port 40 for connecting with a gas pump and a sensor connection port 41 for connecting with a sensor are arranged at the end of the main interface 4 away from the inside of the gas bag 2, the reticular partition 3 extends an arc-shaped extension arm 30 which extends into the main interface 4, that is, the main interface 4 is divided into two interfaces at the outer end of the main interface 4, the extension arm 30 extends into the inner end of the main interface 4, among the two interfaces divided by the main interface 4, one is the gas pump connection port 40 connected with the gas pump in the host 6 through a gas pipe, and the other is the sensor interface 41 connected with the sensor of the host 6 through another gas pipe, so that the gas inlet of the gas bag 2 and the sensor detection are arranged on different pipelines, which reduces the influence of the gas pressure fluctuation of the gas inlet on the measurement result, makes the sensor detect the gas pressure which is the gas pressure buffered and filtered in the gas bag, and improves the accuracy and stability of the blood pressure measurement.The arc structure of the extension arm 30 guides the incoming gas, reduces the turbulence and fluctuation of the gas flow, and reduces the noise. At this time, the end of the extension arm 30 away from the partition 3 is connected to the gas pump connection port 40 adjacent to the inside of the air bag 2 and is located between the gas pump connection port 40 and the sensor connection port 41, that is, the outer end of the extension arm 30 is connected to the position between the gas pump connection port 40 and the sensor connection port 41, which separates the gas pump connection port 40 and the sensor connection port 41 at the inside end of the main port 4, further reduces the influence of gas fluctuation on sensor detection, and improves measurement accuracy.

[0020] Further improvements, as shown in Figure 1 The inner wall of the air bag 2 is provided with a plurality of elastic protrusions 22, and the protrusions 22 are spaced apart from the partition 3 in the air bag 2. On the one hand, the protrusions 22 buffer the gas entering the air bag 2, and on the other hand, the protrusions 22 make the air bag 2 have a support between the inner wall and the partition 3 when the air bag 2 is pressed. When the sleeve is fixed on the measuring part of the limb during use, the air bag 2 is pressed and the inner wall of the air bag 2 and the partition 3 abut, which further causes the problem of air flow in the air bag 2. At this time, the protrusions 22 can be provided with protrusion holes to have air holes on the protrusions 22. If foam or sponge is used to adhere to the inner wall of the air bag to form protrusions, the air holes on the protrusions 22 and the gaps between the protrusions 22 form a gas passage. The protrusions 22 support at the same time and do not block the flow of gas. The protrusions 22 are arranged corresponding to the mesh connection of the partition 3 and / or corresponding to the position inside the main port 4, that is, the arrangement position of the protrusions 22 on the inner wall of the air bag 2. One is corresponding to the position between the adjacent meshes on the partition 3, so that the protrusions 22 do not directly face the mesh on the partition 3, avoiding blocking the mesh. The other is to arrange the protrusions 22 at the position of the inner wall of the air bag 2 connected to the inner end of the main port 4, which can buffer the gas entering the air bag 2 and reduce the fluctuation of the gas pressure. Preferably, both are arranged.

[0021] Further improvements, as shown in Figure 1 The volume of the lower inflation cavity 21 is greater than that of the upper inflation cavity 20, and the sensor connection port 41 is arranged corresponding to the lower inflation cavity 21, and the gas pump connection port 40 is arranged corresponding to the upper inflation cavity 20. The lower inflation cavity 21 corresponds to the measuring part of the limb during blood pressure measurement, so that the gas enters the upper inflation cavity 20 through the gas pump connection port 40, and then enters the lower inflation cavity 21 through the partition 3, further reducing the impact of the gas entering the air bag 2, and improving the measurement accuracy.

[0022] Further improvements, as shown in Figure 1As shown in the figure, the inner wall of the air bag 2 is provided with a damping coating 5, which is coated on the inner wall of the air bag 2 by rubber paint, can slow down the pressure change speed of the air bag 2 during inflation and deflation, make the pressure rise and fall more stable, promote the pressure in the air bag 2 to be more evenly distributed in the measuring part, avoid local pressure being too high or too low, and also can reduce the interference of external factors on blood pressure measurement, such as slight movement of the arm, muscle tension, etc.

[0023] A sphygmomanometer, such as Figure 2 As shown in the figure, it comprises a host computer 6, which is connected to the aforementioned sphygmomanometer cuff through the air pipe. The host computer 6 comprises a processor, an electric air pump, an electromagnetic valve and a pressure sensor, all of which are electrically connected to the processor through wires. The processor is used to process the information detected by the pressure sensor to obtain the detected blood pressure, and to control the operation of the electric air pump and the three-way electromagnetic valve. The electric air pump is used to inflate the air bag. The air pump connection pipe 60 is connected to the air pump connection port 40, and the sensor connection pipe 61 is connected to the sensor connection port 41. The electric air pump is connected to the air pump connection pipe 40 and the sensor connection pipe 41 respectively. The electromagnetic valve and the pressure sensor are installed in the sensor connection pipe 61. During blood pressure measurement, the processor controls the air pump connection pipe 60 and the electric air pump to be turned on, while the electromagnetic valve is closed. Then the electric air pump is started to inflate and pressurize the air bag 2. The pressure sensor is used to feedback the air pressure change in the air bag 2 in real time. Once the pre-set threshold value is reached, the processor will control the electric air pump to stop inflating, and the electromagnetic valve to deflate slowly. When the pressure in the cuff air bag is lower than the pressure of the brachial artery blood on the brachial artery wall, the blood vessel changes from closed to open, and the blood starts to flow. When the blood flows, it is accompanied by a certain amplitude of oscillation wave. The oscillation wave propagates to the pressure sensor in the form of mechanical wave through the sensor connection pipe. The pressure sensor can detect the pressure of the air bag 2 and the propagating oscillation wave in real time. Then continue to deflate, the oscillation wave becomes larger and larger, and as the pressure of the air bag decreases, the contact between the cuff and the brachial artery in the arm becomes looser and looser, so the pressure and fluctuation detected by the pressure sensor become smaller and smaller. The moment when the fluctuation is the largest is selected as the reference point. Based on this point, the forward search is the fluctuation point with peak value 0.45, and this point is the systolic pressure. The backward search is the fluctuation point with peak value 0.75, and the pressure corresponding to this point is the diastolic pressure.

[0024] It should be understood that those skilled in the art can make improvements or changes according to the above description, and all these improvements and changes shall belong to the protection scope of the appended claims of the present application.

Claims

1. A cuff for a blood pressure monitor, characterized in that: The cuff body includes an air bladder. Inside the air bladder is a mesh-like divider that horizontally divides the air bladder into an upper inflation chamber and a lower inflation chamber. The divider is made of the same material as the air bladder. The cuff body has a main interface that communicates with both the upper and lower inflation chambers. At the end of the main interface furthest from the air bladder, there are an air pump connection port for connecting to an air pump and a sensor connection port for connecting to a sensor. An arc-shaped extension from the divider reaches into the main interface. The structure includes an extension arm; multiple elastically deformable protrusions are provided on the inner wall of the airbag, and gaps are spaced between the protrusions and the partitions inside the airbag; the main interface is flared on the side facing the inside of the airbag, with a small outer port diameter and a gradually increasing inner port diameter; the end of the extension arm away from the partition is connected to the end near the air pump connection port inside the airbag and is located between the air pump connection port and the sensor connection port; both the upper and lower ends of the mesh hole of the partition are flared; and the inner wall of the airbag is provided with a damping coating.

2. The blood pressure cuff according to claim 1, characterized in that... The protrusions correspond to the mesh connection points of the separators and / or are located on the inner side of the main interface.

3. The blood pressure cuff according to claim 1, characterized in that... The volume of the lower inflation chamber is greater than the volume of the upper inflation chamber.

4. A blood pressure monitor, characterized in that... Includes a main unit, the main unit being connected to a blood pressure cuff as described in any one of claims 1 to 3.

5. The blood pressure monitor according to claim 4, characterized in that... The host includes a processor, an electric air pump, a solenoid valve, and a pressure sensor. The electric air pump, solenoid valve, and pressure sensor are all electrically connected to the processor. An air pump connection pipe is connected to the air pump connection port, and a sensor connection pipe is connected to the sensor connection port. The electric air pump is connected to both the air pump connection pipe and the sensor connection pipe. The solenoid valve and pressure sensor are installed inside the sensor connection pipe.

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