Cuff for sphygmomanometer and sphygmomanometer

Abstract

The invention relates to a sphygmomanometer cuff and a sphygmomanometer. The sphygmomanometer cuff comprises a cuff body, and an air bag is arranged in the cuff body; the air bag is internally provided with a partition piece which is of a net-shaped structure and divides the air bag into an upper inflation cavity and a lower inflation cavity in the horizontal direction; the cuff body is provided with a main connector communicated with the upper inflation cavity and the lower inflation cavity. The end, away from the interior of the air bag, of the main connector is provided with an air pump connector used for being connected with an air pump and a sensor connector used for being connected with a sensor. An extension arm which extends into the main interface and is of an arc-shaped structure extends on the separator; meanwhile, the invention discloses a sphygmomanometer using the cuff. The influence of air pressure fluctuation on a measurement result is reduced, and the accuracy and stability of blood pressure measurement are improved.

Description

Technical Field

[0001] The invention relates to the field of blood pressure measurement, in particular to a blood pressure meter cuff and a blood pressure meter. Background Art

[0002] The electronic sphygmomanometer is easy to operate, has an intuitive display, and does not require a stethoscope or professionals. The whole machine is mainly composed of a measuring part, a display part, and a cuff. At present, the cuffs of electronic sphygmomanometers on the market are basically composed of an air bag with a single air hole. The structure is simple, but this type of cuff is easy to affect the patient's blood pressure measurement results. During the pressurization process, a large amount of gas enters the air bag through the air inlet in a short period of time. Due to the impact, air pressure fluctuations will occur. In addition, during the pressurization or deflation process, the air bag will also change with the change of pressure, and may move inside the bag. These factors will affect the acquisition of the signal. If the signal is interfered with, it will affect the accuracy of the signal, resulting in inaccurate blood pressure measurement results. Summary of the invention

[0003] In view of the existing deficiencies, the present invention provides a blood pressure monitor cuff and a blood pressure monitor.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a cuff for a blood pressure monitor, including a cuff body, in which an airbag is arranged; a partition with a mesh structure is arranged inside the airbag and divides the airbag into an upper inflation chamber and a lower inflation chamber in the horizontal direction; a main interface connected to both the upper inflation chamber and the lower inflation chamber is arranged on the cuff body, and an air pump connection port for connecting to an air pump and a sensor connection port for connecting to a sensor are arranged at one end of the main interface away from the inside of the airbag; an extension arm with an arc-shaped structure extending into the main interface is extended from the partition.

[0005] Preferably, a plurality of elastically deformable protrusions are provided on the inner wall of the airbag.

[0006] Preferably, the protrusion is arranged corresponding to the mesh connection of the separator and / or corresponding to the inner side of the main interface.

[0007] Preferably, the side of the main interface facing the inside of the airbag is in a trumpet-shaped structure.

[0008] Preferably, the volume of the lower air-filled cavity is greater than the volume of the upper air-filled cavity.

[0009] Preferably, one end of the extension arm away from the partition is connected to one end of the air pump connection port adjacent to the interior of the airbag and is located between the air pump connection port and the sensor connection port.

[0010] Preferably, both upper and lower ends of the mesh holes on the separator are in a trumpet-shaped structure.

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

[0012] A sphygmomanometer comprises a host, wherein the host is connected to a cuff for a sphygmomanometer as described in any one of the above items.

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

[0014] The beneficial effects of the present invention are as follows: during the pressurization process, the present invention can effectively alleviate the impact of gas entering the airbag and reduce air pressure fluctuations. At the same time, two different pipelines are used to set the air intake and sensor detection, so that the gas pressure detected by the sensor is the gas pressure after buffering and filtering in the airbag, reducing the influence of air pressure fluctuations on the measurement results and improving the accuracy and stability of blood pressure measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the internal structure of a cuff according to an embodiment of the present invention;

[0016] Figure 2 is a schematic structural diagram of a sphygmomanometer according to an embodiment of the present invention;

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

[0018] In order to more clearly illustrate the purpose, technical solutions and advantages of the embodiments of the present invention, the present invention will be further described in conjunction with the embodiments below, and a clear and complete description will be given. Obviously, the embodiments described are partial embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the present invention.

[0019] A blood pressure cuff, such as Figure 1As shown in the figure, it includes a cuff body 1, in which an airbag 2 is arranged. The cuff body 1 is made of elastic material, such as nylon, polyester fiber and other synthetic materials or blended materials. The airbag 2 is located inside the cuff body 1 and is made of rubber or similar elastic material. When inflated, it expands to apply pressure to the limb. At the same time, a fixing buckle or Velcro is also provided on the cuff body 1 to fix the cuff to the measuring part of the limb; a partition 3 with a mesh structure is provided inside the airbag 2, which divides the airbag 2 into an upper inflation chamber 20 and a lower inflation chamber 21 in the horizontal direction. The mesh structure of the partition 3 means that a plurality of partition through holes 31 are provided thereon. , multiple separator through holes 31 form a mesh of the separator 3, and the mesh on the separator 3 constitutes a gas flow channel between the upper inflation chamber 20 and the lower inflation chamber 21. The separator 3 is made of the same material as the airbag 2, and the separator extends from the inner wall of the airbag 2. The separator 3 can effectively alleviate the impact of gas entering the airbag 2 during the pressurization process and reduce the fluctuation of air pressure. The upper and lower ends of the mesh holes on the separator 3 are both trumpet-shaped structures, which reduces the fluctuation of gas when it flows between the upper inflation chamber 20 and the lower inflation chamber 21 through the separator 3; the cuff body 1 is provided with a main interface connected to both the upper inflation chamber 20 and the lower inflation chamber 21 4, the main interface 4 is used to connect the cuff with the host 6, and the pressure change in the airbag 2 is detected by the host 6 to measure the blood pressure. The side of the main interface 4 facing the inside of the airbag 2 is in a trumpet-shaped structure, that is, the inner end of the main interface 4 is in a trumpet-shaped structure. The main interface 4 has a small outer diameter and a gradually larger inner diameter. The gas enters the large-diameter channel from the small-diameter channel, thereby reducing the impact force of the gas in the airbag 2; the end of the main interface 4 away from the inside of the airbag 2 is provided with an air pump connection port 40 for connecting to the air pump and a sensor connection port 41 for connecting to the sensor, and the partition 3 extends with an arc-shaped structure extending into the main interface 4 The extension arm 30, that is, the main interface 4 is divided into two interfaces at the outer end of the main interface 4, and the extension arm 30 extends into the inner end of the main interface 4. Among the two interfaces of the main interface 4, one interface is the air pump connection port 40 connected to the air pump in the main unit 6 through the air pipe, and the other is the sensor interface 41 connected to the sensor of the main unit 6 through another air pipe. In this way, the air intake of the airbag 2 and the sensor detection are set on different pipelines, reducing the influence of the air pressure fluctuation of the intake on the measurement result, so that the gas pressure detected by the sensor is the gas pressure after buffering and filtering in the airbag, thereby improving the accuracy and stability of blood pressure measurement;The arc-shaped structure of the extension arm 30 guides the incoming gas, reduces the chaos and fluctuation of the airflow, and reduces noise. At this time, the end of the extension arm 30 away from the partition 3 is connected to the end of the air pump connection port 40 adjacent to the inside of the airbag 2 and is located between the air pump connection port 40 and the sensor connection port 41. That is to say, the outer end of the extension arm 30 is connected to the position between the air pump connection port 40 and the sensor connection port 41, separating the air pump connection port 40 and the sensor connection port 41 at the inner end of the main interface 4, further reducing the influence of gas fluctuations on sensor detection and improving measurement accuracy. ;

[0020] Further improvements, such as Figure 1 As shown in , a plurality of elastically deformable protrusions 22 are provided on the inner wall of the airbag 2, and a gap is provided between the protrusion 22 and the partition 3 in the airbag 2. On the one hand, the protrusion 22 is used to buffer the gas entering the airbag 2, and on the other hand, the protrusion 22 ensures that there is a support between the inner wall of the airbag 2 and the partition 3 when the airbag 2 is squeezed, thereby avoiding the problem that the inner wall of the airbag 2 and the partition 3 abut against each other when the cuff is fixed to the measuring part of the limb during use, thereby causing the problem of a blocked air path in the airbag 2. At this time, a protruding through hole can also be provided on the protrusion 22 so that the protrusion 22 has an air hole. For example, foam or sponge can be used to stick to the inner wall of the airbag to form a protrusion, and the air hole on the protrusion 22 and the gap between the protrusions 22 form a gas channel. The protrusion 22 provides support without blocking the flow of gas. The protrusion 22 is arranged corresponding to the mesh connection of the partition 3 and / or corresponding to the inner side position of the main interface 4, that is, the setting position of the protrusion 22 on the inner wall of the airbag 2. One is corresponding to the position between adjacent meshes on the partition 3, so that the protrusion 22 will not face the mesh on the partition 3 to avoid blocking the mesh. The other is to set the protrusion 22 at a position on the inner wall of the airbag 2 connected to the inner end of the main interface 4, so that the gas entering the airbag 2 can be buffered and the fluctuation of air pressure can be reduced. Preferably, both are set at the same time.

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

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

[0023] A blood pressure monitor, such as Figure 2 As shown in , the main unit 6 is included, and the main unit 6 can be connected to the aforementioned blood pressure cuff through an air tube. The main unit 6 includes a processor, an electric air pump, a solenoid valve and a pressure sensor. The electric air pump, the solenoid valve and the pressure sensor are all 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 at the same time control the operation of the electric air pump and the three-way solenoid valve; the electric air pump is used to inflate the airbag; the air pump connection port 40 is connected to an air pump connection pipe 60, and the sensor connection port 41 is connected to a sensor connection pipe 61; the electric air pump is connected to the air pump connection pipe 40 and the sensor connection pipe 41 respectively; the solenoid valve and the pressure sensor are installed in the sensor connection pipe 61. When measuring blood pressure, the processor controls the air pump connecting pipe 60 and the electric air pump, and the electromagnetic valve is closed. Then the electric air pump is started to inflate and pressurize the airbag 2. The pressure sensor is used to feedback the air pressure change in the airbag 2 in real time. Once the preset threshold is reached, the processor will control the electric air pump to stop inflating and turn on the electromagnetic valve to slowly deflate. When the pressure in the cuff airbag is lower than the pressure of the brachial artery blood on the brachial artery wall, the blood vessel turns from closed to open, and the blood begins to flow. When the blood flows, it is accompanied by an oscillation wave of a certain amplitude. The oscillation wave is transmitted to the pressure sensor through the sensor connecting pipe in the form of a mechanical wave. The pressure sensor can detect the pressure of the airbag 2 and the transmitted oscillation wave in real time; continue to deflate, the oscillation wave becomes larger and larger, and as the airbag pressure gradually decreases, the cuff and the brachial artery in the arm are more and more loose in contact, so the pressure and fluctuation detected by the pressure sensor are smaller and smaller. Select the moment of maximum fluctuation as the reference point, based on this point, look forward for the fluctuation point with a peak value of 0.45, which is the systolic pressure, and look backward for the fluctuation point with a peak value of 0.75, and the pressure corresponding to this point is the diastolic pressure.

[0024] It should be understood that those skilled in the art may make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. A blood pressure monitor cuff, characterized in that: The invention comprises a cuff body, wherein an airbag is arranged inside the cuff body; a partition with a mesh structure is arranged inside the airbag and divides the airbag into an upper inflation chamber and a lower inflation chamber in the horizontal direction; a main interface connected with both the upper inflation chamber and the lower inflation chamber is arranged on the cuff body, and an air pump connection port for connecting to an air pump and a sensor connection port for connecting to a sensor are arranged at one end of the main interface away from the inside of the airbag; an extension arm with an arc-shaped structure is extended from the partition and extends into the main interface.

2. The blood pressure monitor cuff according to claim 1, characterized in that: A plurality of elastically deformable protrusions are arranged on the inner wall of the airbag.

3. The blood pressure monitor cuff according to claim 2, characterized in that :The protrusion is arranged corresponding to the mesh connection of the separator and / or corresponding to the inner side position of the main interface.

4. The blood pressure monitor cuff according to claim 1, characterized in that The main interface has a trumpet-shaped structure on one side facing the inside of the airbag.

5. The blood pressure monitor cuff according to claim 1, characterized in that :The volume of the lower air-filled cavity is greater than the volume of the upper air-filled cavity.

6. The blood pressure monitor cuff according to claim 1, characterized in that The end of the extension arm away from the partition is connected to the end of the air pump connection port adjacent to the inside of the airbag and is located between the air pump connection port and the sensor connection port.

7. The blood pressure monitor cuff according to claim 1, characterized in that The upper and lower ends of the mesh holes on the separator are both trumpet-shaped structures.

8. The blood pressure monitor cuff according to claim 1, characterized in that :The inner wall of the airbag is provided with a damping coating.

9. A sphygmomanometer, characterized in that : includes a host, the host is connected to the blood pressure monitor cuff as described in any one of claims 1 to 8.

10. The sphygmomanometer according to claim 9, characterized in that : The host includes a processor, an electric air pump, a solenoid valve and a pressure sensor, and the electric air pump, the solenoid valve and the pressure sensor are all electrically connected to the processor; the air pump connection port is connected to an air pump connection pipe, the sensor connection port is connected to a sensor connection pipe, and the electric air pump is connected to the air pump connection pipe and the sensor connection pipe respectively; The solenoid valve and the pressure sensor are installed in the sensor connecting pipe.

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