Blood Pressure Detection Device

A blood pressure detection device, includes a detection airbag, a pressure sensor provided on the detection airbag, an air pump configured for inflating detection airbag and a solenoid valve or a proportional valve or an exhaust valve for deflating detection airbag. The blood pressure detection device further includes an airbag clamp configured outside the detection airbag for clamping the inflated detection airbag on the finger, wrist, or arm of the human body. The present invention eliminates the operation of wrapping the airbag on the arm or the wrist in the traditional blood pressure detection, so that the blood pressure detection is more convenient. In addition, the present invention incorporates an airbag into the device of the present invention, so as to avoid separation of the airbag from the detection device body, thereby facilitating the combination of the present invention with household or sanitary products.

TECHNICAL FILED

The present invention relates to a blood pressure detection device.

BACKGROUND OF THE INVENTION

Traditional blood pressure detection mainly uses a ring-shaped airbag to wind and wrap around a human wrist or arm, and then the airbag is inflated so that the pressure sensor in the airbag is attached close to the blood vessel of the human and the blood pressure is detected. Therefore, all the blood pressure detection products in the market include a host and an airbag connected to the host through a tube. When using these traditional blood pressure detection products, user has to tie the airbag to the arm, which is troublesome to operate. If the airbag is accidentally lost, then the entire product will be useless. In addition, if the blood pressure detection device is required to be integrated into daily life and combined with household or sanitary products, the separately connected airbag would affect the appearance and daily usage.

SUMMARY OF THE INVENTION

In order to solve the deficiencies of the prior art, the present invention provides a blood pressure detection device that eliminates the requirement of wrapping the airbag on the arm or the wrist in the traditional blood pressure detection, so that the blood pressure detection is more convenient. In addition, the present invention incorporates an airbag into the device of the present invention, so as to avoid separation of the airbag from the detection device body, thereby facilitating the combination of the present invention with household or sanitary products. Further, the present invention can adapt to the finger or wrist or arm blood pressure detection by changing the size of the structure.

The technical solutions adopted by the present invention are provided as below:

A human blood pressure detection device, comprises detection airbag1which forms a closed or a non-closed ring after being inflated when detecting the blood pressure, a pressure sensor provided on detection airbag1, an air pump configured for inflating detection airbag1and a solenoid valve or a proportional valve or an exhaust valve for deflating detection airbag1; the human blood pressure detection device further comprises airbag clamp2configured outside the detection airbag for clamping inflated detection airbag1on the finger, wrist, or arm of the human body.

Airbag clamp2includes supporting portion20and clamping portion21provided on supporting portion20. The supporting portion, the clamping portion or both the supporting portion and the clamping portion are provided with or formed as detection ring23for accommodating a human finger or a wrist or an arm. The detection ring23is provided with detection inlet24for allowing or restricting a human finger or a wrist or an arm to enter into or leave from detection ring23. Detection airbag1is provided on detection ring23. Airbag clamp2further includes driving device22, wherein driving device22drives clamping portion21to move relative to supporting portion20, such that detection inlet24is expanded or narrowed to allow the human finger or the wrist or the arm to enter into or leave from detection ring23.

Airbag clamp2further comprises the supporting portion, the clamping portion arranged on the supporting portion, and a driving device. The driving device drives the clamping portion to move relative to the supporting portion, such that the clamping portion or the supporting portion and the clamping portion form a closed or non-closed ring, which surrounds the human finger or the wrist or the arm; the detection airbag is provided on the clamping portion and/or the supporting portion.

Clamping portion21comprises first clamping portion211and second clamping portion212; free end213and driving end214are provided on each of first clamping portion211and second clamping portion212. Driving ends214of first clamping portion211and second clamping portion212are connected to driving device22. Free ends213of first clamping portion211and second clamping portion212move close or away from each other when first clamping portion211and second clamping portion212are driven by driving device22to move relative to the supporting portion, so that detection inlet24is narrowed or expanded.

Detection airbag1includes airbag body10and connecting ends11located at two ends of airbag body10, wherein connecting ends11are connected to free ends213of first clamping portion211and second clamping portion212.

First clamping portion211and second clamping portion212are arc-shaped, supporting portion20includes supporting portion body200. Wherein supporting portion body200is U-shaped and works as detection ring23.

Free end213of first clamping portion211is provided with a protrusion, and free end213of second clamping portion212is provided with a groove fitted with the protrusion provided on free end213of first clamping portion211.

Sliding grooves201are provided on supporting portion20, and first clamping portion211and second clamping portion212are each provided with sliding portion215for engaging with sliding grooves201. Driving device22includes first driving rod221and second driving rod222respectively hinged with driving ends214of first clamping portion211and second clamping portion212, movable driving block223hinged with the other ends of first driving rod221and second driving rod22, driving airbag224provided between movable driving block223and supporting portion20to push movable driving block223to move, an air pump used for inflating driving airbag224, a solenoid valve or a proportional valve or an exhaust valve configured for deflating driving airbag224. Driving device22includes a reset spring provided between supporting portion20and movable driving block223to push movable driving block223to reset; the movable driving block is located between the driving airbag and the reset spring.

Airbag clamp2further comprises hand sensing module23, wherein the hand sensing module is used to detect whether the human finger, the wrist, or the arm is located in detection ring23or on supporting portion20.

The hand sensing module comprises a capacitive sensor or a pressure sensor, a light touch switch, a sensing electrode plate, a button switch, or an infrared sensor provided on supporting portion20or clamping portion21or detection airbag1.

Compared with the prior art, the present invention has advantages as below:

1. In the present invention, the inflated airbag is pressed against the finger, the wrist or the arm of the human body by the clamping function of the airbag clamp, so that the user no longer needs to tie the detection airbag to the finger or the wrist or the arm, and the blood pressure detection is convenient. In addition, the present invention incorporates the detection airbag into the device of the present invention to facilitate the combination of the present invention with household or sanitary products. Certainly, the present invention can form a complete blood pressure detection product by adding control circuit, power supply circuit and a housing. Besides, the present invention has the advantage of adaptability by changing the size of the structure, so as to adapt to the finger, wrist, or arm blood pressure detection.

2. As a further improvement of the present invention, the airbag clamp includes a supporting portion, a clamping portion, and a driving device. The supporting portion, the clamping portion, or both the supporting portion and the clamping portion are provided with or formed as a detection ring for accommodating a finger, a wrist, or an arm of human. The detection ring is provided with a detection inlet for allowing or restricting the human finger or the wrist or the arm to enter into or leave from the detection ring, and the detection airbag is arranged on the detection ring. When the user measures the blood pressure, the finger or the wrist or the arm is first placed on the detection ring through the detection inlet and the driving device drives the clamping portion to move relative to the supporting portion, so that the detection inlet is narrowed or directly closed and the human finger or the wrist or the arm is surrounded in the detection ring, then the blood pressure detection can start. After detecting the blood pressure, the controller controls the driving device to expand the detection inlet, so that the user can remove his/her finger, wrist, or arm. The airbag clamp is provided with a detection ring, which is convenient for the user to place a finger or a wrist or an arm and makes the blood pressure detection more convenient.

DETAILED DESCRIPTION OF THE INVENTION

The embodiments of the present invention will be described in detail with reference toFIG. 1andFIG. 2.

A blood pressure detection device, comprises inflated detection airbag1which is closed or non-closed ring shape when detecting the blood pressure, a pressure sensor provided on detection airbag1, an air pump configured for inflating detection airbag1and a solenoid valve or a proportional valve or an exhaust valve for deflating detection airbag1. The blood pressure detection device further comprises airbag clamp2arranged outside the detection airbag and configured for clamping the inflated detection airbag1on the finger, wrist, or arm of the human body. The airbag clamp can open or close to allow or restrict the human finger, the wrist, or the arm to enter into or leave from the airbag clamp. The inflated detection airbag1is tightly attached to the finger, wrist, or arm of the human body by airbag clamp2, so that the pressure sensor on detection airbag1is tightly attached to the blood vessels of the finger, wrist, or arm of the human body. When detecting the blood pressure, the user puts his or her finger, wrist, or arm in airbag clamp2, such that detection airbag1is located between the finger, wrist, or arm and the airbag clamp2. Then the air pump begins to inflate detection airbag1and the finger, wrist, or arm is pressed tightly through the clamping function of airbag clamp2. The detection airbag1is inflated until the pressure of detection airbag1applied to the finger, wrist or arm in airbag clamp2is enough to stop the blood flow. And then, the solenoid valve, the proportional valve, or the exhaust valve evenly deflates detection airbag1. The pressure sensor obtains the pressure fluctuation data related to the human blood pressure from the above process and converts the data into electrical signals. The electrical signals are transmitted to the additionally provided controller. The controller obtains the human blood pressure value according to the oscillometric method of blood pressure detection and the obtained blood pressure value of the human body is output through output modules such as display module, voice module, or communication module which communicates with the smart device.

The method for detecting blood pressure based on the oscillometric method is as follows: In the above oscillatory wave data, the time of the largest fluctuation is selected as the reference point. On the basis of the reference point, a fluctuation point of 0.45 times the peak is searched forward, and this fluctuation point corresponds to the systolic blood pressure; a fluctuation point of 0.75 times the peak is searched backward, and this fluctuation point corresponds to the diastolic blood pressure. It should be noted that the constants of 0.45 and 0.75 vary from person to person and should be set based on the results of clinical tests. Moreover, different blood pressures may be segmented and set with different constants accordingly.

EMBODIMENT

Airbag clamp2includes supporting portion20and clamping portion21provided on support portion20, wherein the supporting portion, the clamping portion, or both the supporting portion and the clamping portion are provided with or formed as detection ring23for accommodating a human finger or a wrist or an arm. Detection ring23is provided with detection inlet24for allowing or restricting the human finger or the wrist or the arm to enter into or leave from detection ring23. Detection airbag1is provided on detection ring23. Airbag clamp2further includes driving device22, wherein driving device22drives clamping portion21to move relative to supporting portion20, such that detection inlet24is expanded or contracted to allow the human finger or the wrist or the arm to enter into or leave from detection ring23. Detection ring23can be provided on supporting portion20, and the shape of the supporting portion forms the detection ring. Detection ring23can also be provided on clamping portion21, and the shape of clamping portion21forms the detection ring. Further, detection ring23can be formed by the supporting portion and clamping portion together. The finger, wrist, or arm of the human body entering into the detection ring means that the finger, wrist or arm of the human body enters into the detection ring, and is surrounded by the detection ring.

When detecting the blood pressure, first, the user places a finger, wrist, or arm into detection ring23. Driving device22drives clamping portion21to move relative to supporting portion20, so that detection inlet24on detection ring23is closed or narrowed, whereby the detection ring encloses the human finger, wrist, or arm and restrains the finger, wrist, or arm of the human body from leaving the detection ring through the detection inlet. Meanwhile, detection airbag1is located between the human finger or wrist or arm and the detection ring. When inflating detection airbag1, detection airbag1is tightly pressed between the detection ring and the human finger or wrist or arm, and the pressure sensor on detection airbag1is attached close to the blood vessels of the human body, thereby obtaining the accurate data. Preferably, detection inlet24is closed when detecting the blood pressure, so that the entire detection ring forms a complete ring with better strength when detecting the blood pressure. However, if the clamping portion and the supporting portion have sufficient strength and rigidity, the detection inlet is also allowed to be opened and just be narrowed to the degree that the finger, the wrist, or the arm of the human body cannot be easily removed from the detection ring when the blood pressure detection is performed.

Certainly, the following preferable design may also be made: Airbag clamp2includes a supporting portion, a clamping portion provided on the supporting portion, and a driving device, wherein the driving device drives the clamping portion to move relative to the supporting portion, such that the clamping portion or the supporting portion and the clamping portion form a closed or non-closed ring surrounding the finger, wrist or arm of the human body. The detection airbag is provided on the clamping portion and/or the supporting portion. Airbag clamp2can be provided without a fixed detection ring. When the user detects the blood pressure, first, the finger or the wrist or the arm is placed on the supporting portion, and the driving device drives the clamping portion to move relative to the supporting portion, such that the clamping portion or both the supporting portion and the clamping portion form a closed or non-closed ring surrounding the human finger or wrist or arm. The closed or non-closed ring is equivalent to the detection ring, and is formed when detecting the blood pressure, instead of being set at the beginning. Detection airbag1is already located between the human finger, the wrist, or the arm and the airbag clamp when detecting the blood pressure, and when inflating the detection airbag, the detection airbag is tightly pressed between the detection ring and the human finger or wrist or arm. After the blood pressure measurement is completed, the driving device drives the clamping portion to move relative to the supporting portion so that the position of the clamping portion is reset, and the user can remove the finger, the wrist, or the arm. This design is beneficial to hide the clamping portion of airbag clamp2in the supporting portion, and the clamping portion of airbag clamp2is exposed from the supporting portion to form the detection ring when detecting the blood pressure, making the appearance of the present invention more harmonious. Further, in the preferred embodiment, a hand sensing module for sensing whether the human finger, the wrist, or the arm is on the supporting portion can be provided on the supporting portion. The hand sensing module is preferably a capacitive sensor, a pressure sensor, an infrared sensor, a sensing electrode plate, or a button switch. After the human finger or the wrist or the arm is placed on the supporting portion, the hand sensing module senses the human finger or the wrist or the arm and then notifies the driving device to drive the clamping portion to move relative to the supporting portion and form a closed or non-closed ring surrounding the human finger, wrist, or arm.

For symmetry and considerations of maintaining the stiffness and strength, clamping portion21comprises first clamping portion211and second clamping portion212. Free end213and driving end214are provided on each of first clamping portion211and second clamping portion212. Driving ends214of first clamping portion211and second clamping portion212are connected to driving device22. Free ends213of first clamping portion211and second clamping portion212are moved close to or away from each other when first clamping portion211and second clamping portion212are driven to move relative to the supporting portion by driving device22, so that detection inlet24is expanded or narrowed. Detection inlet24is formed between free ends213of first clamping portion211and second clamping portion212. When free ends213of first clamping portion211and second clamping portion212move close to each other, detection inlet24is narrowed or even closed; and when free ends213of first clamping portion211and second clamping portion212move away from each other, detection inlet24is opened or expanded.

Detection airbag1includes airbag body10and connecting portions11located at two ends of airbag body10, wherein connecting portions11are connected to free ends213of first clamping portion211and second clamping portion212. The two ends of detection airbag1are respectively connected to free ends213of first clamping portion211and second clamping portion212. When the human finger, wrist, or arm is placed in the detection ring, and free ends213of first clamping portion211and second clamping portion212move close to each other, detection airbag1opens and encloses the human finger, wrist, or arm.

For fitting the shape of the human finger or wrist or arm to improve the comfort in blood pressure detection, first clamping portion211and second clamping portion212are arc-shaped. Supporting portion20includes supporting portion body200; wherein supporting portion body200is U-shaped and works as detection ring23.

Free end213of first clamping portion211is provided with a protrusion, and free end213of second clamping portion212is provided with a groove fitted with the protrusion provided on free end213of first clamping portion211. After free ends213of first clamping portion211and second clamping portion212move close to each other, the above-mentioned protrusion and groove cooperate with each other, so that first clamping portion211, second clamping portion212and supporting portion20together form a stable closed ring. When inflating detection airbag1, the strength and stiffness of airbag clamp2can also be ensured, so as to ensure the accuracy of blood pressure detection results.

Sliding grooves201are provided on supporting portion20, and first clamping portion211and second clamping portion212are provided with sliding portions215engaged with sliding grooves201. Driving device22includes first driving rod221and second driving rod222, respectively hinged with driving ends214of first clamping portion211and second clamping portion212, movable driving blocks223hinged with the other ends of first driving rod221and second driving rod222, driving airbag224provided between movable driving block223and supporting portion20and used to push movable driving block223to move, an air pump used for inflating driving airbag224, a solenoid valve or a proportional valve or an exhaust valve for deflating driving airbag224. Driving device22further includes a reset spring provided between supporting portion20and movable driving block223and used to push movable driving block223to reset. The movable driving block is located between the driving airbag and the reset spring. The solenoid valve, the proportional valve, or the exhaust valve may also be replaced with other devices that can exhaust the driving airbag. Such replacement is a replacement of conventional technical means and should fall within the protection scope of the present invention.

When the user places a finger, wrist, or arm in detection ring23through detection inlet24, the air pump inflates the driving airbag. The volume of the driving airbag becomes larger and drives the movable driving block to move. The movable driving block pushes first driving rod221and second driving rod222to move. First driving rod221and second driving rod222respectively push first clamping portion211and second clamping portion212to slide in sliding grooves201of the supporting portion, so that the free ends of first clamping portion211and second clamping portion212move closer to each other, therefore detection inlet24is closed or narrowed. The closed or narrowed detection inlet limits the movement of the human finger, wrist, or arm, so that the blood pressure detection can be performed. After the blood pressure detection is completed, the solenoid valve, the proportional valve, or the exhaust valve deflates the driving airbag, and the movable driving block is reset by the reset spring and drives the driving rods and first clamping portion211and second clamping portion212to reset at the same time. Detection inlet24is opened or expanded again, so that the human finger, the wrist, or the arm can be removed from detection ring23. The power source of the driving device in this embodiment is an air pump, which adopts the pneumatic driving mode. Since the gas gets easily compressed, the airbag clamp will not cause any big harm to the user even if a situation of clamping hand occurs, which has an advantage of being safe.

Airbag clamp2further includes a hand sensing module, wherein the hand sensing module is used to detect whether the human finger, the wrist, or the arm is located in detection ring23or on supporting portion20. The human body sensing module includes a capacitive sensor or a pressure sensor, a light touch switch, a sensing electrode plate, a button switch, or an infrared sensor provided on supporting portion20or clamping portion21or detection airbag1.When the user places a finger or wrist or arm in detection ring23or on supporting portion20, the hand sensing module informs the additionally provided controller that the user is in place, wherein the controller is connected to the hand sensing module. The controller controls driving device22to drive clamping portion21to move relative to supporting portion20, so that detection inlet24is narrowed or even closed, and the blood pressure detection gets started.

The present invention can be combined with household or sanitary products to incorporate blood pressure detection into people's daily lives.FIG. 2is a perspective view of the present invention when the present invention is applied to toilet3. The toilet having the blood pressure detection device enables users to pay attention to their own blood pressure status while they are using the toilet every day, so as to know their own health status.