Laminated arc-shaped air bag for blood pressure watch

Abstract

The utility model relates to a laminated arc-shaped air bag for a blood pressure watch, belongs to the technical field of wearable equipment, solves the problems that a blood pressure measuring device in the prior art is large in size, insufficient in wearing comfort and inconvenient to measure, and comprises an air bag main body, the air bag body comprises a fixing layer, a first inflation layer, an inflation layer, a second inflation layer and an electrode layer which are arranged in a laminated mode from top to bottom, the fixing layer and the first inflation layer are fixed on the periphery so that a first air chamber can be formed between the fixing layer and the first inflation layer, and the inflation layer, the second inflation layer and the electrode layer are fixed on the periphery so that a second air chamber can be formed between the second inflation layer and the electrode layer. A second air chamber is formed between the inflating layer and the second inflating layer, and the first air chamber is communicated with the second air chamber; and the fixing layer, the first inflating layer, the inflating layer, the second inflating layer and the electrode layer are strip-shaped and form radians in the longitudinal direction, so that the assembled airbag main body has an arc-shaped initial shape.

Description

Technical Field

[0001] This utility model relates to the field of wearable device technology, specifically to a stacked arc-shaped airbag for a blood pressure watch. Background Technology

[0002] The air bladder in a blood pressure watch is a crucial component of this type of device. Similar to the air bladder in a traditional blood pressure monitor, it applies pressure to the wrist during measurement to monitor blood pressure changes. The air bladder in a blood pressure watch is an innovative design that integrates the pressure measurement method of a traditional blood pressure monitor into a portable watch form. These air bladders are typically controlled by a miniature air pump built into the watch, capable of inflating to achieve sufficient pressure to measure blood pressure. To ensure accuracy and comfort, the air bladder is designed to be detachable and available in different sizes to fit various users' wrists. During operation, the air bladder works in conjunction with a high-precision pressure sensor, capturing blood pressure signals through the inflation and deflation process. This data is then analyzed using intelligent algorithms to provide accurate blood pressure readings. These air bladders can also work with other sensors in the watch to monitor health indicators such as heart rate, blood oxygen, and body temperature. Through a companion app, users can easily view detailed health data and historical trends, allowing for better management of their health.

[0003] The curved airbag is an ergonomic design that better conforms to the curve of the user's wrist, providing a more comfortable and accurate experience when measuring blood pressure. However, the airbags used in existing blood pressure watches have the following shortcomings.

[0004] 1. Existing blood pressure watches typically use straight-shaped air bladders. Since different people have different wrist circumferences, shapes, and other data, these straight-shaped air bladders cannot fit the user's wrist curve well when worn. Gaps are very easy to form between the air bladder and the wrist, causing the obtained blood pressure curve to have an abnormal baseline drift, resulting in different measurement errors for different people.

[0005] 2. Some blood pressure watches use a multi-airbag design, but multiple airbags result in a larger product size. Inflating multiple airbags leads to a longer measurement time and greater power consumption. In order to reduce the coupling error between the flexible bodies of multiple airbags, the auxiliary airbag and the blood pressure measuring airbag must be isolated by a high-rigidity isolation plate, resulting in lower overall wearing comfort.

[0006] Therefore, there is a need in this technical field for a blood pressure watch with an air bladder that can provide accurate blood pressure measurement, high wearing comfort, and convenient measurement. Utility Model Content

[0007] To address the problem that the air bladder in existing blood pressure watches cannot effectively fit the wrist, this invention provides a layered arc-shaped air bladder for blood pressure watches, which not only fits the wrist better but also provides greater wearing comfort.

[0008] According to one embodiment of the present invention, a stacked arc-shaped airbag for a blood pressure watch is provided, comprising an airbag body, and the airbag body comprising, stacked from top to bottom: a fixing layer, a first inflation layer, an air-inflating layer, a second inflation layer, and an electrode layer, wherein the fixing layer and the first inflation layer are fixed at their periphery to form a first air chamber therebetween, and the air-inflating layer, the second inflation layer, and the electrode layer are fixed at their periphery to form a second air chamber therebetween the air-inflating layer and the second inflation layer, and the first air chamber and the second air chamber are connected; wherein the fixing layer, the first inflation layer, the air-inflating layer, the second inflation layer, and the electrode layer are elongated and arc-shaped in the longitudinal direction, so that the assembled airbag body has an initial arc-shaped shape.

[0009] Optionally, the airbag body further includes: at least one sealing buckle having an I-shaped structure in longitudinal cross-section, including an upper part and a lower part, and an intermediate column connecting the upper part and the lower part; the fixing layer has at least one sealing hole penetrating in the thickness direction for cooperating with the sealing buckle, the shape and size of the sealing hole being the same as the cross-sectional shape and size of the intermediate column of the sealing buckle.

[0010] Optionally, the airbag body further includes: a first sealing buckle and a second sealing buckle, both having an I-shaped structure in longitudinal cross-section, including an upper part and a lower part, and an intermediate column connecting the upper part and the lower part, wherein the first sealing buckle has an elliptical cross-section and the second sealing buckle has a circular cross-section; the fixing layer has an elliptical first sealing hole and a circular second sealing hole, the first sealing hole cooperating with the intermediate column of the first sealing buckle, and the second sealing hole cooperating with the intermediate column of the second sealing buckle.

[0011] Optionally, the air-inflating layer, the second air-inflating layer, and the electrode layer have a longitudinally outwardly protruding connecting portion at the same end; the air-inflating layer has a first fixing hole formed on the connecting portion, the second air-inflating layer has a second fixing hole formed on the connecting portion, and the electrode layer has a third fixing hole formed on the connecting portion, and the first fixing hole, the second fixing hole, and the third fixing hole are axially aligned with each other.

[0012] Optionally, an air inlet is formed on the connecting part of the air-inflating layer, through which gas is injected into the second air chamber between the air-inflating layer and the second inflation layer.

[0013] Optionally, a tactile sensor, which is a flexible sensor, is provided on the electrode layer; the connecting part of the electrode layer is also provided with a sensing connection through hole for data transmission.

[0014] Optionally, the first air layer has a first vent hole that extends through the thickness direction; the air-filled layer has a second vent hole that extends through the thickness direction; the second vent hole has the same shape, size and number as the first vent hole, and they are in a one-to-one correspondence, forming a connecting channel between the first air chamber and the second air chamber after assembly.

[0015] Optionally, the bottom of the air-inflating layer has a long annular fixing groove arranged around the second vent hole. The air-inflating layer and the first air-inflating layer are fixedly attached to each other within the outline of the fixing groove, and are not fixed outside the outline of the fixing groove, so that the first air chamber and the second air chamber form two trapezoidal shapes that are symmetrical in the inflated state.

[0016] Optionally, the fixing layer, the first inflation layer, the air-filled layer, the second inflation layer, and the electrode layer are all made of TPU material.

[0017] Optionally, the elastic modulus of the materials of the fixing layer and the first inflation layer is greater than the elastic modulus of the materials of the air-filled layer, the second inflation layer and the electrode layer.

[0018] Compared with the prior art, the stacked arc-shaped airbag for a blood pressure watch provided by this utility model has at least the following advantages:

[0019] 1. The stacked arc-shaped airbag for blood pressure watches according to this utility model uses a double air chamber for inflation. Compared with a single air chamber, the range of expansion and deformation in the vertical direction during inflation is larger, increasing the actual contact area with the arc-shaped measurement part, resulting in a higher degree of compression on the blood vessels, more accurate blood pressure measurement data, and more accurate blood pressure values.

[0020] 2. The stacked arc-shaped airbag of the blood pressure watch according to this utility model is arc-shaped in its initial state. When worn, it can better fit the shape of the part to be measured, thereby reducing the gap during measurement and fitting more closely with the part to be measured, making the blood pressure measurement results more accurate.

[0021] 3. According to this utility model, the bottom of the stacked arc-shaped airbag for blood pressure watches is provided with an electrode layer, and a tactile sensor is provided on the electrode layer. This sensor can detect the degree of fit of the wearer, thereby supplementing the blood pressure measurement results and making the blood pressure measurement results more accurate. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. By referring to the drawings, the features and advantages of this utility model can be more clearly understood. The drawings are schematic and should not be construed as limiting this utility model in any way. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is an overall schematic diagram of a stacked arc-shaped airbag for a blood pressure watch, provided according to an embodiment of the present invention.

[0024] Figure 2 This is a side view of a stacked arc-shaped airbag for a blood pressure watch according to an embodiment of the present invention.

[0025] Figure 3 This is a schematic diagram of the connector and the main body of the stacked arc-shaped airbag for a blood pressure watch, according to an embodiment of the present invention.

[0026] Figure 4 This is an exploded view of the airbag body of the stacked arc-shaped airbag for a blood pressure watch, according to an embodiment of the present invention.

[0027] Figure 5 This is a bottom view of the inflation layer of the stacked arc-shaped air bladder for a blood pressure watch, provided according to an embodiment of the present invention.

[0028] Figure 6 This is a schematic diagram of the first and second air chambers of the stacked arc-shaped airbag for a blood pressure watch in an inflated state, according to an embodiment of the present invention.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Airbag main body;

[0031] 10. First sealing buckle;

[0032] 12. Second sealing buckle;

[0033] 20. Connector;

[0034] 21. Connecting the protrusion;

[0035] 22. Air valve;

[0036] 23. Connecting hole;

[0037] 100. Fixed layer;

[0038] 110. First sealing hole;

[0039] 112. Second sealing hole;

[0040] 200. First air-filled layer;

[0041] 210. First vent;

[0042] 300, air-filled layer;

[0043] 310. Second vent;

[0044] 320. First fixing hole;

[0045] 330. Air intake port;

[0046] 340. Fixing groove;

[0047] 400. Second air-filled layer;

[0048] 420. Second fixing hole;

[0049] 500, Electrode layer;

[0050] 520. Third fixing hole;

[0051] 530. Sensor connection through hole;

[0052] 600. First air chamber;

[0053] 700. Second air chamber. Detailed Implementation

[0054] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments of this utility model and the features thereof can be combined with each other.

[0055] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0056] The following will describe in detail, with reference to the accompanying drawings, a stacked arc-shaped airbag for a blood pressure watch according to an embodiment of the present invention.

[0057] refer to Figures 1 to 6According to an embodiment of the present invention, a stacked arc-shaped airbag for a blood pressure watch is provided, comprising an airbag body 1, which includes, from top to bottom, a fixing layer 100, a first inflation layer 200, an air-inflating layer 300, a second inflation layer 400, and an electrode layer 500. The fixing layer 100 and the first inflation layer 200 are fixed at their periphery to form a first air chamber 600 in the center. The air-inflating layer 300 and the second inflation layer 400 are fixed at their periphery to form a second air chamber 700 in the center. The first air chamber 600 and the second air chamber 700 are connected. Optionally, the electrode layer 500 may be fixed at its periphery to the air-inflating layer 300 and the second inflation layer 400 to fit against the lower surface of the second air chamber 700. The fixed layer 100, the first inflation layer 200, the air inflation layer 300, the second inflation layer 400, and the electrode layer 500 are elongated strips with a certain curvature in the longitudinal direction. This gives the assembled airbag body 1 an initial arc shape, allowing it to fit well with the typically arc-shaped test area in its initial state, ensuring almost seamless contact and a tighter fit during inflation. Compared to the first air chamber 600, the second air chamber 700 is closer to the test area.

[0058] like Figures 1 to 3 As shown, optionally, the stacked arc-shaped airbag for the blood pressure watch may further include a connector 20 connected to the airbag body 1 for connecting the airbag body 1 to a telephone watch or other blood pressure measuring device. For example, the connector 20 can be used to connect the airbag body 1 to the dial of the blood pressure watch. The connector 20 includes an air nozzle 22, a connecting protrusion 21, and a connecting hole 23. The air nozzle 22 is used to inflate the airbag body 1. Optionally, as needed, the air nozzle can also be in the form of an air hole for use with the inflation head of a separately provided inflation device. The connecting protrusion 21 is used for connection and fixation to the airbag body 1. The connecting protrusion 21 can use screws. The connecting hole 23 is used for connection to the blood pressure watch; for example, the connecting hole 23 can be two connecting screw holes provided on both sides of the connector 20 for connection to the blood pressure watch body. The main body 1 of the stacked arc-shaped air bladder used in the blood pressure watch is arc-shaped in its initial state, with the end away from the connector 20 drooping slightly downwards. During application, the arc shape helps to better fit the area to be measured, resulting in a tighter fit and more accurate measurement results. Optionally, a reinforcing strip (not shown in the figure) can be connected to the nozzle 22. The reinforcing strip is elongated and located in the second air chamber 700, fitting against the upper surface of the second inflation layer 400 facing the inflation layer 300 and extending along the longitudinal direction of the second inflation layer 400. Its function is to guide the airflow output from the nozzle, allowing the airflow to flow along the reinforcing strip and thus clearing the air passage.

[0059] Figure 3The stacked mounting relationship and composition structure of a stacked arc-shaped airbag for a blood pressure watch according to this embodiment are shown. When assembling the airbag body 1, firstly, the fixing layer 100 and the first inflation layer 200 are fixedly connected at their four edges, leaving an internal void to form a first air chamber 600; then, the inflation layer 300, the second inflation layer 400, and the electrode layer 500 are fixedly connected at their four edges, leaving an internal void between the inflation layer 300 and the second inflation layer 400 to form a second air chamber 700; then, the first inflation layer 200 and the inflation layer 300 are connected and fixedly connected; the inflation layer 300, the second inflation layer 400, and the electrode layer 500 are fixedly connected to the watch at one end via a connector 20, and the air nozzle 22 of the connector 20 is airtightly connected to the air inlet 330 of the inflation layer 300 to inflate the airbag body 1 through the air inlet 330.

[0060] Optionally, such as Figures 1 to 4 As shown, the airbag body 1 of the stacked arc-shaped airbag for a blood pressure watch in this embodiment may further include a sealing buckle for fixing the airbag body 1 to the blood pressure watch. In this embodiment, the stacked arc-shaped airbag for the blood pressure watch includes two sealing buckles, namely, a first sealing buckle 10 and a second sealing buckle 12. The structure of the first sealing buckle 10 and the second sealing buckle 12 is I-shaped in longitudinal cross-section, that is, it includes an upper part and a lower part connected by a middle column, wherein the cross-sectional dimension of the middle column is smaller than the cross-sectional dimensions of the upper part and the lower part. In other words, the structure of the first sealing buckle 10 and the second sealing buckle 12 is such that the upper and lower parts are larger and the middle part is thinner. Optionally, the first sealing buckle 10 and the second sealing buckle 12 may also be configured such that the cross-sectional dimension of the upper part is smaller than the cross-sectional dimension of the lower part to achieve better sealing. In this embodiment, the first sealing buckle 10 is configured to have an elliptical cross-section, meaning the upper, middle, and lower portions of the first sealing buckle 10 have elliptical cross-sections; and the second sealing buckle 12 is configured to have a circular cross-section, meaning the upper, middle, and lower portions of the second sealing buckle 12 have circular cross-sections. This shape configuration facilitates installation and mating with the corresponding connection holes of a conventional blood pressure watch. The upper surfaces of the first sealing buckle 10 and the second sealing buckle 12 are used for connection with the watchband, and the lower bottom surfaces of the first sealing buckle 10 and the second sealing buckle 12 are located between the fixing layer 100 and the first inflation layer 200. Optionally, the cross-section of the first sealing buckle 10 can be formed as an ellipse for connection with the watchband hole of the blood pressure measuring watch during installation, the watchband hole being typically elliptical; and the cross-section of the second sealing buckle 12 can be formed as a circle for connection with the end of the watchband during installation. However, the first sealing buckle 10 and the second sealing buckle 12 can be configured with any other shape as needed.

[0061] like Figure 4As shown, the fixing layer 100 of the airbag body 1 in this embodiment has a through-hole in the thickness direction as a sealing hole, which corresponds to and engages with the sealing buckle. In this embodiment, the fixing layer 100 has two sealing holes, namely a first sealing hole 110 and a second sealing hole 112, which are used to install and engage with the first sealing buckle 10 and the second sealing buckle 12 respectively, providing an airtight function. Specifically, the first sealing hole 110 engages with the first sealing buckle 10, and the second sealing hole 112 engages with the second sealing buckle 12. The surfaces surrounding the first sealing hole 110 and the second sealing hole 112 are welded using high-frequency welding to ensure airtightness. In this embodiment, the first sealing hole 110 is elliptical, and its shape and size are consistent with the cross-sectional shape and size of the central column of the first sealing buckle 10. After assembly, the first sealing buckle 10 passes through the first sealing hole 110, so that the central column of the first sealing buckle 10 is airtightly fitted with the first sealing hole 110. Furthermore, the upper and lower parts of the first sealing buckle 10 are larger than the size of the first sealing hole 110, which ensures the stability of the installation and prevents the first sealing buckle 10 from coming loose from the first sealing hole 110. The second sealing hole 112 is circular, and its shape and size are consistent with the cross-sectional shape and size of the central column of the second sealing buckle 12. After assembly, the second sealing buckle 12 passes through the second sealing hole 112, so that the central column of the sealing buckle 12 is airtightly fitted with the second sealing hole 112. Furthermore, the upper and lower parts of the second sealing buckle 12 are larger than the size of the first sealing hole 112, which ensures the stability of the installation and prevents the second sealing buckle 12 from coming loose from the second sealing hole 112. It should be understood that the shape and size of the sealing hole are not limited thereto, but can be changed accordingly depending on the shape and size of the sealing buckle in different embodiments.

[0062] like Figure 4 As shown, in this embodiment, the fixing layer 100 and the first inflation layer 200 of the airbag body 1 have the same shape, and the inflation layer 300 and the second inflation layer 400 have the same shape. The fixing layer 100, the first inflation layer 200, the inflation layer 300, the second inflation layer 400, and the electrode layer 500 are all elongated strips, and each has rounded chamfers at its four corners. One end of the inflation layer 300 and the second inflation layer 400 has a connecting portion for connecting to a blood pressure watch via a connector 20. Therefore, the connecting portion of the inflation layer 300 and the second inflation layer 400 extends outward and protrudes beyond the corresponding end portions of the fixing layer 100 and the first inflation layer 200.

[0063] Continue to refer to Figure 4In this embodiment, the first inflatable layer 200 has a through-hole extending in the thickness direction as a first vent 210. In this embodiment, eight circular first vents 210 are arranged in a row in the first inflatable layer 200. It should be understood that in other embodiments, more or fewer first vents may be provided in the first inflatable layer as needed.

[0064] like Figure 4 As shown, the air-inflating layer 300 has through holes extending in the thickness direction as second vent holes 310. These second vent holes 310 have the same shape and size as the first vent holes 210 of the first air-inflating layer 200, and there is a one-to-one correspondence. The air-inflating layer 300 has a total of eight second vent holes 310, which correspond one-to-one with and connect to the eight first vent holes 210 in the first air-inflating layer 200, that is, the corresponding first vent holes 210 and second vent holes 310 are connected, and together they form a through channel connecting the first air chamber 600 and the second air chamber 700. Optionally, the number of second vent holes 310 in the air-inflating layer 300 and the number of first vent holes 210 in the first air-inflating layer 200 can be set to more or fewer as needed.

[0065] In this embodiment, as Figure 4 As shown, one end of the air-inflating layer 300 has a longitudinally protruding connecting portion, in which a through-hole 330 and a first fixing hole 320 are formed. The first fixing hole 320 is used for the connecting protrusion 21 of the connector 20 to pass through for installation. The air-inflating hole 330 is connected to the air nozzle 22 to inflate the second air chamber 700 through the air-inflating hole 330. The air nozzle 22 is fixedly connected to the air-inflating hole 330 at one end of the air-inflating layer 300. When inflating through the air nozzle 22, the gas enters the second air chamber 700 between the second inflation layer 400 and the air-inflating layer 300 through the air-inflating hole 330, and then enters the first air chamber 600 between the fixing layer 100 and the first inflation layer 200 through the through-channel formed by the second vent hole 310 of the air-inflating layer 300 and the first vent hole 210 of the first inflation layer 200, thereby inflating both air chambers.

[0066] like Figure 4 and Figure 5As shown, in this embodiment, the bottom of the air layer 300 (i.e., the surface of the air layer 300 facing the second inflation layer 400) has a long annular fixing groove 340 surrounding the outer periphery of a row of second vent holes 310. The long annular shape of the fixing groove 340 is a closed ring extending longitudinally along the length of the air layer 300, with arc-shaped ends, and enclosing all the second vent holes 310 within it. Optionally, the fixing groove 340 is a shallow groove recessed into the bottom surface of the air layer 300 to define the fixing area between the air layer 300 and the first inflation layer 200, facilitating assembly and fixing. Furthermore, the outer periphery of the long annular fixing groove 340 is smaller than the outer periphery of the air layer 300, and the portions of the air layer 300 and the first inflation layer 200 within the outline of the fixing groove 340 are fitted and fixed vertically, meaning that the portions outside the outline of the fixing groove 340 are not fixed. The portions of the inflatable layer 300 and the first inflatable layer 200 within the contour of the fixing groove 340 are fixedly connected, while the portions outside the contour of the fixing groove 340 are not fixed. When the airbag body 1 is inflated, both the upper first air chamber 600 and the lower second air chamber 700 are in an expanded state. The unfixed portions of the first inflatable layer 200 and the inflatable layer 300 outside the fixing groove 340 are pushed apart by the gas, deflecting upwards and downwards respectively, thus forming two trapezoidal air chambers. The first vent 210 of the first inflatable layer 200, after being fitted and fixed, aligns and communicates with the second vent 310 of the inflatable layer 300.

[0067] Figure 6 This is a cross-sectional view of the first and second air chambers of a stacked arc-shaped airbag for a blood pressure watch according to this utility model. Figure 6 As shown, the stacked arc-shaped airbag used in the blood pressure watch forms two trapezoidal air chambers when inflated, namely, the first air chamber 600 and the second air chamber 700 are both trapezoidal. The first air chamber 600 is an inverted trapezoid, and the second air chamber 700 is an upright trapezoid. The part connecting the first air chamber 600 and the second air chamber 700 is the fixing groove 340. The first air chamber 600 and the second air chamber 700 are symmetrical and have elastic characteristics. The structure of the first air chamber 600 and the second air chamber 700 allows the airbag body 1 to expand and deform more thoroughly during inflation, resulting in a larger contact area with the measured area and smaller gaps, thus improving the accuracy of blood pressure measurement.

[0068] The second inflation layer 400 and the electrode layer 500 have longitudinally protruding connecting portions at the same end as the air-inflating layer 300. The second inflation layer 400 and the electrode layer 500 are respectively provided with a second fixing hole 420 and a third fixing hole 520 on their extended connecting portions, which are axially aligned with the first fixing hole 320 of the air-inflating layer 300. That is, by passing the connecting protrusion 21 of the connector 20 through and fixing the first fixing hole 320 of the air-inflating layer 300, the second fixing hole 420 of the second inflation layer 400, and the third fixing hole 520 of the electrode layer 500, the air-inflating layer 300, the second inflation layer 400, and the electrode layer 500 are fixed to the connector 20 at the connecting portion and fixedly connected to the body of the blood pressure watch.

[0069] In this embodiment, as Figure 4 As shown, the electrode layer 500, the air layer 300, and the second air layer 400 are fixedly connected at their four edges. In the initial state, the second air layer 400 is in contact with the electrode layer 500, meaning the electrode layer 500 and the second air chamber 700 are in contact. The second air chamber 700 is close to the area being measured, and this contact allows for better measurement. A tactile sensor (not shown in the figure) is installed on the electrode layer 500. The tactile sensor is a flexible sensor, and a sensing connection through hole 530 is also provided at the connection part of the electrode layer 500 for data transmission. During inflation, the tactile sensor can generate corresponding signals based on the deformation of the electrode layer 500, directly measuring whether the airbag and the user's wrist are in a tight fit, thereby compensating for blood pressure measurement.

[0070] In this embodiment, the thickness of the fixing layer 100 is 0.4 mm, the thickness of the first inflation layer 200 is 0.2 mm, the thickness of the air-inflating layer 300 is 0.2 mm, the thickness of the second inflation layer 400 is 0.15 mm, and the thickness of the electrode layer 500 is 0.15 mm. The fixing layer 100, the first inflation layer 200, the air-inflating layer 300, the second inflation layer 400, and the electrode layer 500 are all made of TPU material. Thermoplastic polyurethane (TPU) is a polymer material between rubber and plastic. TPU has high modulus, high strength, high elongation, and high elasticity, which allows the stacked arc-shaped airbag used in the blood pressure watch to fit better during inflation. Furthermore, in this embodiment, the elastic modulus of the electrode layer 500, the second inflation layer 400, and the air-inflating layer 300 is lower than the elastic modulus of the fixing layer 100 and the first inflation layer 200. Since the second air chamber 700 is the side that contacts the area to be measured, the elastic modulus of the second air chamber 700, which is composed of the second inflation layer 400 and the air-inflating layer 300, is less than that of the first air chamber 600, which is composed of the fixed layer 100 and the first inflation layer 200. As a result, the second air chamber 700 deforms more during inflation, while the first air chamber 600 deforms less. This allows the second air chamber 700 to fit the area to be measured more closely, resulting in more accurate blood pressure measurements.

[0071] The working process of the stacked arc-shaped airbag for a blood pressure watch according to this utility model is as follows: First, the airbag body 1 is set and held at the measurement site; then, air is pumped into the air inlet 330 of the inflation layer 300 of the airbag body 1 using the air nozzle 22; the gas enters the second air chamber 700 through the air inlet 330, then through the second vent 310 on the surface of the inflation layer 300, and then through the first vent 210 on the surface of the first inflation layer 200, thus achieving inflation of both air chambers, that is, the gas enters the first air chamber 600 from the second air chamber 700 from bottom to top. During the inflation process, since the electrode layer 500 is in contact with the second inflation layer 400, the contact data between the airbag body 1 and the measurement site can be measured, thereby compensating for the blood pressure measurement result. A pressure sensor can be installed in the watch body to measure the air pressure value of the airbag body 1 during the inflation process, and combine it with the blood pressure algorithm to obtain the blood pressure value of the user being measured. The new invention features a layered arc-shaped airbag for a blood pressure watch. When worn, it fits closely to the area being measured. When inflated, it expands and deforms more in the vertical direction, increasing the actual contact area with the arc-shaped area being measured on the body. This results in a higher degree of pressure on the blood vessels, making the measured data more accurate, and thus the obtained blood pressure value is also more accurate.

[0072] All of the above-mentioned optional technical solutions can be combined in any way to form the optional embodiments of this application, and will not be described in detail here.

[0073] It should be understood that the sequence number of each step in the above embodiments does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of this utility model embodiment.

[0074] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A laminated arcuate bladder for a blood pressure watch, characterized by, The airbag body (1) comprises, from top to bottom, a fixing layer (100), a first inflation layer (200), an inflating layer (300), a second inflation layer (400), and an electrode layer (500), wherein the fixing layer (100) and the first inflation layer (200) are fixed at the four periphery edges to form a first air chamber (600) therebetween, the inflating layer (300), the second inflation layer (400), and the electrode layer (500) are fixed at the four periphery edges to form a second air chamber (700) between the inflating layer (300) and the second inflation layer (400), and the first air chamber (600) and the second air chamber (700) are communicated; and wherein the fixing layer (100), the first inflation layer (200), the inflating layer (300), the second inflation layer (400), and the electrode layer (500) are in the shape of a long strip and are formed with an arc in the longitudinal direction, so that the airbag body (1) has an initial shape of an arc after being assembled.

2. The laminated arc bladder for a blood pressure watch of claim 1, wherein, The airbag body (1) further comprises: at least one sealing buckle having a structure in the shape of an I-beam in the longitudinal cross-section, comprising an upper portion and a lower portion, and a middle column connecting the upper portion and the lower portion; the fixing layer (100) has at least one sealing hole penetrating in the thickness direction, for cooperating with the sealing buckle, the shape and size of the sealing hole being the same as the cross-sectional shape and size of the middle column of the sealing buckle.

3. The laminated arc bladder for a blood pressure watch of claim 1, wherein, The airbag body (1) further comprises: a first sealing buckle (10) and a second sealing buckle (12), both having a structure in the shape of an I-beam in the longitudinal cross-section, comprising an upper portion and a lower portion, and a middle column connecting the upper portion and the lower portion, wherein the first sealing buckle (10) has an elliptical cross-section, and the second sealing buckle (12) has a circular cross-section; the fixing layer (100) has an elliptical first sealing hole (110) and a circular second sealing hole (112), the first sealing hole (110) cooperating with the middle column of the first sealing buckle (10), and the second sealing hole (112) cooperating with the middle column of the second sealing buckle (12).

4. The laminated arc-shaped airbag for a blood pressure watch according to claim 1, wherein: the inflating layer (300), the second inflation layer (400), and the electrode layer (500) have a connecting portion protruding longitudinally outward at the same end, the inflating layer (300) is formed with a first fixing hole (320) on the connecting portion, the second inflation layer (400) is formed with a second fixing hole (420) on the connecting portion, and the electrode layer (500) is formed with a third fixing hole (520) on the connecting portion, and the first fixing hole (320), the second fixing hole (420), and the third fixing hole (520) are axially aligned with each other.

5. The laminated arc-shaped airbag for a blood pressure watch according to claim 4, wherein: the connecting portion of the inflating layer (300) is further formed with an air inlet hole (330) through which gas is injected into the second air chamber (700) between the inflating layer (300) and the second inflation layer (400).

6. The laminated arc-shaped airbag for a blood pressure watch according to claim 4, characterized in that: The electrode layer (500) is provided with a tactile sensor, which is a flexible sensor; The connecting portion of the electrode layer (500) is further provided with a sensing connection through hole (530) for data transmission.

7. The laminated arc-shaped airbag for a blood pressure watch according to claim 1, characterized in that: The first inflatable layer (200) has a first air hole (210) penetrating in the thickness direction; The inflating layer (300) has a second air hole (310) penetrating in the thickness direction; The second air hole (310) is consistent with the first air hole (210) in shape, size and number, and has a one-to-one correspondence relationship to form a communication channel between the first air chamber (600) and the second air chamber (700) after assembly.

8. The laminated arc-shaped airbag for a blood pressure watch according to claim 7, characterized in that: The inflating layer (300) has a long annular fixing groove (340) arranged around the second air hole (310) at the bottom; The inflating layer (300) and the first inflatable layer (200) are fixed on the upper and lower parts within the profile of the fixing groove (340), and are not fixed on the parts outside the profile of the fixing groove (340), so that the first air chamber (600) and the second air chamber (700) form two trapezoidal shapes in the inflated state.

9. The laminated arc-shaped airbag for a blood pressure watch according to claim 1, characterized in that: The fixing layer (100), the first inflatable layer (200), the inflating layer (300), the second inflatable layer (400) and the electrode layer (500) are all made of TPU material.

10. The laminated arc-shaped airbag for a blood pressure watch according to claim 1 or 9, characterized in that: The elastic modulus of the material of the fixing layer (100) and the first inflatable layer (200) is greater than the elastic modulus of the material of the inflating layer (300), the second inflatable layer (400) and the electrode layer (500).

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