Blood pressure measuring device

Abstract

The blood pressure measuring device comprises a base, an arc-shaped bearing part, a fixed air bag cuff, a movable air bag cuff and a combined telescopic mechanism, the arc-shaped bearing part is arranged in the base, the fixed air bag cuff is fixed in the arc-shaped bearing part, one end of the movable air bag cuff is fixed at a fixed position in the base, and the other end of the movable air bag cuff is fixed at a fixed position in the base. The power mechanism and the execution mechanism of the second extension mechanism are separately arranged, the heavy power mechanism is allowed to be installed on the base, and the load of the first extension arm can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of blood pressure measurement technology, specifically a blood pressure measuring device. Background Technology

[0002] The main principle of a blood pressure monitor is to pressurize air to compress a local artery. By applying pressure, the fluctuation of the local artery is stopped, thereby measuring the blood flow pressure during that period. The most primitive type of blood pressure monitor is the cuff blood pressure monitor.

[0003] Chinese Patent Publication No. CN112773345A discloses an automatic blood pressure measuring device with an open-type tightening mechanism, including a base, an arc-shaped receiving part, a fixed airbag cuff, a movable airbag cuff, and a telescopic mechanism. The fixed airbag cuff is fixed to the arc-shaped receiving part by a fixed pressure plate. Except for the part pressed down by the fixed pressure plate, the rest of the fixed airbag cuff is movable. The length of the fixed airbag cuff is close to the minimum arm circumference set by the automatic blood pressure measuring device. One end of the movable airbag cuff is fixed to a fixed position in the base, and the other end is fixed to the front end of the telescopic mechanism, so that the movable airbag cuff can extend out of the base and surround the arm of the person being measured until the other end reaches the vicinity of the part of the fixed cuff pressed down by the fixed pressure plate. The airbags of the fixed airbag cuff and the movable airbag cuff are both connected to an air guide tube. The two air guide tubes are combined into one through a three-way conduit, which can ensure measurement accuracy, broaden the applicable population, and improve the convenience of use for the person being measured.

[0004] The aforementioned technology first uses a primary drive motor to drive the primary extension arm to rotate counterclockwise, and then uses a secondary drive motor to drive the secondary extension arm to rotate counterclockwise, so that the movable cuff and the fixed cuff cooperate to form a ring. However, both the secondary drive motor and the secondary extension arm are mounted at the end of the primary extension arm, resulting in a large load on the primary extension arm. The primary drive motor needs to have higher power output, which leads to the need for customized product parts, high cost, and high difficulty, which is not conducive to the miniaturization and mass production of the product. Therefore, this utility model provides a blood pressure measuring device to solve the above problems. Utility Model Content

[0005] In view of the problems in the prior art, this utility model provides a blood pressure measuring device.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] A blood pressure measuring device includes a base, an arc-shaped receiving portion, a fixed air cuff, a movable air cuff, and a combined telescopic mechanism. The arc-shaped receiving portion is disposed within the base, and the fixed air cuff is fixed within the arc-shaped receiving portion. One end of the movable air cuff is fixed to a fixed position within the base, and the other end of the movable air cuff is fixed to the front end of the combined telescopic mechanism. The combined telescopic mechanism is located within the base, such that when the combined telescopic mechanism extends out of the base, the portion of the movable air cuff that is retracted within the base extends out of the base and surrounds the arm of the person being measured. The retraction mechanism consists of at least a first extension mechanism and a second extension mechanism. The second extension mechanism includes a second extension arm, a second drive member, and a reset member. The second drive member includes a power mechanism and an actuator connected to the power mechanism. The second extension arm, the actuator, and the reset member are disposed in the first extension mechanism. The power mechanism is located in the base. After the second extension arm extends with the first extension mechanism, it is driven by the second drive member to extend out of the first extension mechanism. After the measurement is completed, the first extension mechanism reverses its direction, and the reset member reverses its direction to drive the second extension arm to reset, so that the active airbag cuff retracts into the base.

[0008] Preferably, the first extension mechanism includes a first extension arm and a first driving member. The first extension arm is semi-circular and includes a main body and a functional part. The functional part is disposed on the outside of the main body. The first driving member is located in the base and its output end is provided with a transmission part that drives the main body with the functional part to extend out of the base through the transmission part.

[0009] Preferably, the first driving member is fixedly disposed at the middle position of the base.

[0010] Preferably, both the airbag of the fixed airbag cuff and the airbag of the movable airbag cuff are equipped with inflation nozzles. The inflation nozzles of the fixed airbag cuff are each connected to an air guide tube, and the inflation nozzles of the movable airbag cuffs are each connected to an air guide tube. The air guide tubes of the fixed airbag cuff and the corresponding airbags of the movable airbag cuff are combined into one via a three-way conduit.

[0011] Preferably, the reset member is a spring, which is disposed in the guide mechanism of the main body so that when the second drive member runs in reverse, the reset member drives the second extension arm to reset in reverse.

[0012] Preferably, the reset component is a pull-wire mechanism, which includes a traction motor and a traction rope. The traction motor is located in the base, one end of the traction rope is fixed to the second extension arm and the other end is connected to the output end of the traction motor, so that the output end of the traction motor synchronously winds the traction rope when the second drive component runs in reverse.

[0013] The beneficial effects of this utility model are:

[0014] This utility model discloses a blood pressure measuring device in which the power mechanism and the actuator of the second extension mechanism are set separately, which allows the heavy power mechanism to be installed on the base, which helps to reduce the load on the first extension arm. The radial dimension of the first extension arm can also be reduced accordingly, which is conducive to the miniaturization and mass production of the product. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 A schematic diagram of the state of Embodiment 1 of the blood pressure measuring device provided by this utility model. Figure 1 ;

[0017] Figure 2 A schematic diagram of the state of Embodiment 1 of the blood pressure measuring device provided by this utility model. Figure 2 ;

[0018] Figure 3 A schematic diagram of the state of Embodiment 1 of the blood pressure measuring device provided by this utility model. Figure 3 ;

[0019] Figure 4 This is a schematic diagram of the state of a blood pressure measuring device embodiment 2 provided by this utility model.

[0020] In the picture:

[0021] 1. Base; 11. Arc-shaped receiving part; 2. Fixed airbag cuff; 3. Movable airbag cuff; 4. Combined telescopic mechanism; 41. First extension mechanism; 411. First extension arm; 412. First driving component; 42. Second extension mechanism; 421. Second extension arm; 422. Second driving component; 423. Reset component; 4231. Traction motor; 4232. Traction rope; 5. Inflation nozzle; 6. Air guide tube. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] Example 1, as Figure 1-3 As shown, the blood pressure measuring device of this utility model includes a base 1, an arc-shaped receiving part 11, a fixed air cuff 2, a movable air cuff 3, and a combined telescopic mechanism 4. The arc-shaped receiving part 11 is disposed in the base 1, and the fixed air cuff 2 is fixed in the arc-shaped receiving part 11.

[0024] In this embodiment, the arc-shaped receiving part 11 is an arc-shaped space for receiving the arm of the person being measured. Since its structure is arc-shaped and is only part of a ring, it is open. The arm of the person being measured can be placed from above the automatic blood pressure measuring device of the present invention from top to bottom without having to wear a sleeve and a full circle of cuffs.

[0025] In this embodiment, the fixed airbag cuff 2 is used to collect changes in blood flow pressure in the subject's arm. The middle of the fixed airbag cuff 2 is fixed to the base 1, while its two ends are free ends, ensuring a proper wrapping effect on the arm after inflation. The fixed airbag cuff 2 is preferably made of nylon, which can withstand prolonged use and repeated inflation and deflation, and is not easily worn or damaged. The fixed airbag cuff 2 also has a certain degree of elasticity, allowing it to fit tightly to the measurement site and ensure that the pressure cuff can effectively apply appropriate pressure. It is relatively easy to clean and care for; it can be wiped with a damp cloth or washed according to the manufacturer's instructions. Nylon material is generally soft and will not cause discomfort to the user, providing better comfort.

[0026] Furthermore, one end of the movable airbag cuff 3 is fixed to a fixed position inside the base 1, and the other end of the movable airbag cuff 3 is fixed to the front end of the combined telescopic mechanism 4.

[0027] In this embodiment, the movable airbag cuff 3 is folded and stored inside the base 1, and can extend and retract with the extension and retraction of the combined telescopic mechanism 4. At the beginning of the measurement, the movable airbag cuff 3 is pulled out from one end of the base 1 and moves to the other end of the base 1 until the movable airbag cuff 3, the base 1 and the fixed airbag cuff 2 can completely enclose to form a ring structure. After the measurement is completed, the movable airbag cuff 3 is retracted into the base 1, which will not affect the next use. It is worth noting that the movable airbag cuff 3 and the fixed airbag cuff 2 are made of the same material and have basically the same function.

[0028] Furthermore, the combined telescopic mechanism 4 is located in the base 1, such that when the combined telescopic mechanism 4 extends out of the base 1, the portion of the movable airbag cuff 3 that is retracted in the base 1 extends out of the base 1 and surrounds the arm of the person being measured. The combined telescopic mechanism 4 is composed of at least a first extension mechanism 41 and a second extension mechanism 42.

[0029] In this embodiment, the first extension mechanism 41 and the second extension mechanism 42 work together to enable the active airbag cuff 3 to extend smoothly and surround the arm of the person being measured. It is worth noting that the operation sensing of the first extension mechanism 41 and the second extension mechanism 42 can be controlled by four limit switches. When the first extension mechanism 41 or the second extension mechanism 42 reaches its extreme value, one of the four limit switches will be triggered. The advantage of this structure is that the device has high safety and reliability. In actual products, it can also be controlled by taking current signals or by direct program operation.

[0030] Further, the second extension mechanism 42 includes a second extension arm 421, a second drive member 422, and a reset member 423. The second extension arm 421 is disposed in the first extension mechanism 41 so that the second extension arm 421 can extend with the first extension mechanism 41. Part of the structure of the second drive member 422 is located in the base so that it does not extend with the first extension mechanism 41. After the second extension arm 421 extends with the first extension mechanism 41, the second drive member 422 drives the second extension arm 421 to extend out of the first extension mechanism 41. The movable airbag cuff 3 extends from one end of the arc of the arc-shaped receiving part 11 and moves to the other end of the arc of the arc-shaped receiving part 11.

[0031] In this embodiment, the second driving member 422 can be a pneumatic mechanism, and the second extension arm 421 has an arc-shaped structure. The second driving member 422 can drive the second extension arm 421 to extend by pumping high-pressure air. The pneumatic mechanism includes a power mechanism and an actuator connected to the power mechanism. The actuator is, for example, a telescopic cylinder, the power mechanism is, for example, an air pump, a transmission pipeline with a one-way valve, and a pressure relief valve located on the transmission pipeline. During operation, the air pump fixed in the base 1 draws air, pressurizes the air, and delivers it to the telescopic cylinder through the transmission pipeline, so that the length of the telescopic cylinder is extended. The telescopic cylinder can push the second extension arm 421 to extend. Conversely, the pressure relief valve opens, which can release the high air pressure in the telescopic cylinder, so that the second extension arm 421 can change its extension state. The air pump can be fixed in the base 1, and only the telescopic cylinder moves with the first extension mechanism 41, which greatly reduces the load on the first extension mechanism 41.

[0032] In this embodiment, the second driving member 422 can also be a hydraulic mechanism. The second extension arm 421 has an arc-shaped structure. The second driving member 422 can drive the second extension arm 421 to extend by pumping hydraulic oil. The hydraulic mechanism includes a power mechanism and an actuator connected to the power mechanism. The actuator is, for example, a telescopic cylinder. The power mechanism is, for example, an oil pump, a transmission pipeline with a one-way valve, a return pipeline, an oil tank, and a solenoid valve located in the return pipeline. During operation, the oil pump fixed in the base 1 draws hydraulic oil from the oil tank and delivers the hydraulic oil to the telescopic cylinder through the transmission pipeline, so that the length of the telescopic cylinder is extended. The telescopic cylinder can push the second extension arm 421 to extend. Conversely, when the solenoid valve is opened, the hydraulic oil in the telescopic cylinder can re-enter the oil tank along the return pipeline, so that the second extension arm 421 can change its extension state. The oil pump and the oil tank can be fixed in the base 1. Only the telescopic cylinder moves with the first extension mechanism 41, which greatly reduces the load on the first extension mechanism 41.

[0033] Furthermore, the first extension mechanism 41 includes a first extension arm 411 and a first driving member 412. The first extension arm 411 is semi-circular and includes a main body and a functional part. The functional part is disposed on the outside of the main body. The first driving member 412 is located in the base 1 and its output end is provided with a transmission part that drives the functional part to extend out of the base 1 through the transmission part.

[0034] In this embodiment, the first driving component 412 is a motor, the transmission part is a gear, and the functional part is an arc-shaped rack. The motor drives the gear to mesh with the arc-shaped rack, which can realize the retraction and extension of the first extension arm 411.

[0035] Furthermore, the first driving member is fixedly disposed at the middle position of the base;

[0036] Specifically, this eliminates the need for customization of the first driving component 412, makes the driving of the first driving component 412 more stable, and reduces the strength requirements of the materials.

[0037] Furthermore, both the airbag of the fixed airbag cuff 2 and the airbag of the movable airbag cuff 3 are equipped with an inflation nozzle 5. The inflation nozzle 5 of the fixed airbag cuff 2 is connected to an air guide tube 6, and the inflation nozzle 5 of the movable airbag cuff 3 is connected to an air guide tube 6. The air guide tube 6 of the airbag of the fixed airbag cuff 2 and the air guide tube 6 of the corresponding airbag of the movable airbag cuff 3 are combined into one through a three-way conduit.

[0038] In this embodiment, during the measurement process, the blood pressure monitor inflates the fixed cuff 2 and the movable cuff 3 through the three-way tube, the air inlet tube 6, and the inflation nozzle 5. Conversely, the blood pressure monitor depressurizes the fixed cuff 2 and the movable cuff 3 through the three-way tube, the air inlet tube 6, and the inflation nozzle 5. By automatically inflating and deflating, and using sensors or microphones to detect Korotkoff sounds, the systolic and diastolic blood pressures are automatically calculated and displayed. This is existing technology, and based on this, this application will not elaborate on the specific model of the blood pressure monitor.

[0039] Furthermore, after the measurement is completed, the first extension mechanism 41 operates in reverse, and the reset member 423 drives the second extension arm 421 to reset in reverse, so that the movable airbag cuff 3 retracts into the base 1. The reset member 423 is a cable pulling mechanism, which includes a traction motor 4231 and a traction rope 4232. The traction motor 4231 is located in the base 1. One end of the traction rope 4232 is fixed to the second extension arm 421 and the other end is connected to the output end of the traction motor 4231, so that when the second drive member 422 operates in reverse, the output end of the traction motor 4231 synchronously winds the traction rope 4232.

[0040] In this embodiment, when a reset is required, the traction motor 4231 starts to work, and its output end synchronously winds the traction rope 4232. The tension of the traction rope 4232 causes the second extension arm 421 to retract toward the first extension arm 411 or the base 1. As the second extension arm 421 retracts, the active airbag cuff 3 is also pulled back into the base 1.

[0041] Example 2, as Figure 4 As shown, unlike Embodiment 1, the reset member 423 is a spring, and the reset member 423 is disposed in the guide mechanism of the main body so that when the second driving member 422 runs in reverse, the reset member 423 drives the second extension arm 421 to reset in reverse.

[0042] In this embodiment, after the blood pressure measurement is completed, the pressure of the second drive member 422 is removed, the compression state of the spring is released, and the resulting elastic force pushes the second extension mechanism 42 to start moving in the opposite direction. The guide mechanism ensures that the force of the spring acts on the second extension arm 421 in a predetermined direction, so that the reset action is smooth and accurate. The spring as the reset member 423 provides a simple and effective reset method, reducing the need for additional motors and complex mechanical structures. The spring reset mechanism is usually low in cost, simple to maintain, and highly reliable. By utilizing the natural elasticity of the spring, a fast and powerful reset action can be achieved.

[0043] Working principle:

[0044] When the measurement begins, the first drive unit 412 drives the first extension arm 411 to extend from the base 1. At this time, the second drive unit 422 does not operate, and the second extension arm 421 moves synchronously with the first extension arm 411. The second extension arm 421 pulls the active airbag cuff 3 to extend from one end of the base 1 and move to the other end of the base 1.

[0045] When the first extendable arm 411 extends to its maximum distance, the first drive unit 412 stops operating, the second drive unit 422 starts operating, the second extendable arm 421 extends out from the first extendable arm 411, and pulls the active airbag cuff 3 to continue moving towards the other end of the base 1 until the second extendable arm 421 reaches the other end of the base 1, and the second drive unit 422 stops operating.

[0046] During the measurement, the blood pressure monitor inflates the fixed cuff 2 and the movable cuff 3 through the three-way tube, the air tube 6 and the inflation nozzle 5. By applying pressure, it stops the fluctuation of local arteries, thereby measuring the blood flow pressure during this period.

[0047] When the measurement is completed, the blood pressure measuring device depressurizes the fixed air cuff 2 and the movable air cuff 3 through the three-way tube, the air tube 6 and the inflation nozzle 5, and the second drive unit 422 runs in reverse.

[0048] When the reset member 423 drives the second extension arm 421 to retract into the first extension arm 411, the second drive member 422 stops running, the first drive member 412 drives the first extension arm 411 to retract into the base 1, the second extension arm 421 moves synchronously with the first extension arm 411, and the second extension arm 421 pulls the movable airbag cuff 3 to retract into the base 1.

[0049] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A blood pressure measuring device, comprising a base, an arc-shaped receiving portion, a fixed air cuff, a movable air cuff, and a combined telescopic mechanism, wherein the arc-shaped receiving portion is disposed within the base, the fixed air cuff is fixed within the arc-shaped receiving portion, one end of the movable air cuff is fixed to a fixed position within the base, and the other end of the movable air cuff is fixed to the front end of the combined telescopic mechanism, the combined telescopic mechanism being located within the base such that when the combined telescopic mechanism extends beyond the base, the portion of the movable air cuff that is retracted within the base extends out of the base and surrounds the arm of the person being measured, characterized in that... The combined telescopic mechanism consists of at least a first extension mechanism and a second extension mechanism. The second extension mechanism includes a second extension arm, a second driving member, and a resetting member. The second driving member includes a power mechanism and an actuator connected to the power mechanism. The second extension arm, the actuator, and the resetting member are disposed in the first extension mechanism. The power mechanism is located in the base. After the second extension arm extends with the first extension mechanism, it is driven by the second driving member to extend out of the first extension mechanism. After the measurement is completed, the first extension mechanism reverses its direction, and the resetting member reverses its direction to drive the second extension arm to reset, so that the movable airbag cuff retracts into the base.

2. A blood pressure measuring device according to claim 1, characterized in that: The first extension mechanism includes a first extension arm and a first driving member. The first extension arm is semi-circular and includes a main body and a functional part. The functional part is located on the outside of the main body. The first driving member is located in the base and its output end is provided with a transmission part that drives the main body with the functional part to extend out of the base through the transmission part.

3. A blood pressure measuring device according to claim 2, characterized in that: The first driving component is fixedly positioned at the center of the base.

4. The blood pressure measuring device of claim 1, wherein: Both the airbag of the fixed airbag cuff and the airbag of the movable airbag cuff are equipped with inflation nozzles. The inflation nozzles of the fixed airbag cuff are connected to an air guide tube, and the inflation nozzles of the movable airbag cuff are connected to an air guide tube. The air guide tubes of the fixed airbag cuff and the corresponding airbags of the movable airbag cuff are combined into one via a three-way conduit.

5. A blood pressure measuring device according to any one of claims 1-4, characterized in that: The reset element is a spring, which is disposed in the guide mechanism of the main body so that when the second drive element runs in reverse, the reset element drives the second extension arm to reset in reverse.

6. A blood pressure measurement device according to any one of claims 1-4, characterized in that: The reset component is a pull-wire mechanism, which includes a traction motor and a traction rope. The traction motor is located in the base. One end of the traction rope is fixed to the second extension arm and the other end is connected to the output end of the traction motor, so that the output end of the traction motor synchronously winds the traction rope when the second drive component runs in reverse.

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