Circular airbag and blood pressure measuring device

Abstract

This utility model relates to the field of medical device technology and discloses a ring-shaped airbag and a blood pressure measuring device. The ring-shaped airbag includes: a first shell, arranged in a ring shape; a second shell, also arranged in a ring shape, the first and second shells together forming a ring structure, with a space between them for accommodating gas; multiple partition structures spaced apart in the space; and multiple air nozzles communicating with the space. By setting up a ring-shaped airbag and spaced apart multiple partition structures within the space, a connected segmented inflation structure is formed. When the ring-shaped airbag is inflated, multiple inflation structures are inflated simultaneously, and each inflation structure includes a partition structure. This ensures that the first and second shells of each inflation structure are evenly stressed during inflation, reducing wrinkles and effectively avoiding wrinkle deformation caused by uneven stress, which could lead to uneven pressure applied to the upper arm and affect the blood pressure measurement effect.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a ring-shaped airbag and a blood pressure measuring device. Background Technology

[0002] A blood pressure monitor is a common instrument for measuring blood pressure. The desktop blood pressure monitors frequently used in daily life are mostly cuff-type monitors, typically consisting of a cloth cover, an air bladder, and a tubing. Before measurement, the operator pulls on the cuff to secure it to the upper arm. When the monitor applies pressure, the air bladder inflates. During inflation, the folds in the air bladder decrease, and the gas is evenly distributed within the bladder. However, cuff-type blood pressure monitors require the user to manually pull and adjust the cuff to fit snugly against the upper arm, which is somewhat cumbersome.

[0003] An automatic blood pressure monitor is disclosed in the prior art. The air bladder includes a sheet-like cuff. The short sides of the sheet-like cuff are joined end to end to form a loop, which is placed inside the housing of the automatic blood pressure monitor. When blood pressure needs to be measured, the air bladder is inflated. After inflation, the air bladder fits snugly against the upper arm of the person being measured. However, during inflation, the air bladder is prone to compression or deformation, which can lead to uneven pressure distribution within the air bladder. In particular, at the joint of the cuff, the pressure per unit area of ​​the cuff wrapped around the upper arm may be inconsistent, thus affecting the accuracy of the blood pressure reading. Utility Model Content

[0004] In view of this, the present invention provides a ring-shaped airbag and a blood pressure measuring device to solve the problem in the prior art that the air passage is easily squeezed and the pressure value inside the airbag is inconsistent when the airbag is inflated, which leads to the inaccuracy of the blood pressure value detected by the blood pressure monitor.

[0005] In a first aspect, this utility model provides an annular airbag for use in a blood pressure measuring device, comprising: The first housing is arranged in a ring shape; The second housing is arranged in a ring shape, and the first housing and the second housing together form a ring structure, with a accommodating space for containing gas formed between the first housing and the second housing; Multiple partition structures are spaced apart in the accommodating space; Multiple air nozzles are connected to the accommodating space.

[0006] In one alternative implementation, the partition structure includes an elastic element.

[0007] In one alternative embodiment, the elastic element is disposed circumferentially within the accommodating space along the annular structure, and the elastic element is fixed to the first housing.

[0008] In one optional embodiment, the air nozzle is disposed on the first housing, and the air nozzles are distributed on both sides of the partition structure along the circumference of the annular structure. Each air nozzle is arranged facing the air nozzle on the adjacent side along the air outlet direction, and is arranged opposite to the air nozzle on the adjacent other side along the air outlet direction. The air outlet direction is consistent with the circumference of the annular structure.

[0009] In one alternative embodiment, a multi-segment inflatable structure is formed within the accommodating space at positions corresponding to the positions on the annular structure along which the base of the adjacent air nozzle is parallel to the axis of the annular structure, and each segment of the inflatable structure includes one of the partition structures.

[0010] In one alternative embodiment, the annular airbag further includes an air passage, the air passage including a first air tube connected to the air nozzle.

[0011] In one alternative embodiment, the first air tube is connected between two opposing air nozzles, and the first air tube is provided with a connector for connecting a second air tube.

[0012] In one alternative embodiment, the annular airbag includes a sensor located on one side of the annular structure that wraps around the upper arm.

[0013] In one alternative implementation, two sensors are provided, and the two sensors are arranged opposite to each other; And / or, two sensors are provided, each located on the second housing at a position corresponding to the non-adjacent partition structure.

[0014] In one alternative implementation, the sensor is provided with a protective layer for isolating the sensor from the external space.

[0015] In one alternative embodiment, the first housing and the second housing are integrally formed.

[0016] Secondly, this utility model also provides a blood pressure measuring device, comprising: Gas source; The aforementioned annular airbag; And an inner cylinder, wherein the annular airbag is disposed inside the inner cylinder.

[0017] The beneficial effects of this patent application are: The annular airbag of this invention forms an annular, interconnected airbag by arranging the first and second shells of the airbag in an annular configuration. The first and second shells together form an annular structure, creating a space between them to accommodate gas. Multiple partition structures are spaced apart within this space to prevent the first and second shells from fitting together before inflation. This effectively reduces the inflation resistance that would exist if the two shells were completely fitted together, and greatly improves the inflation speed and efficiency.

[0018] Furthermore, air nozzles are installed on both sides of the partition structure. Multiple air nozzles are relatively evenly distributed on both sides of the partition structure to form a connected segmented inflation structure. When the annular airbag is inflated, multiple inflation structures are inflated simultaneously. Moreover, each inflation structure includes a partition structure, which ensures that the first shell and the second shell of each inflation structure are evenly stressed during the inflation process, thus reducing wrinkles. This effectively avoids wrinkle deformation caused by uneven stress, which would lead to uneven pressure applied by the airbag to the upper arm and affect the blood pressure measurement effect.

[0019] Furthermore, within the accommodating space, a multi-segment inflatable structure is formed at a position corresponding to the position on the annular structure along the axis of the adjacent air nozzle parallel to the axis of the annular structure. Each segment of the inflatable structure includes a partition structure. The multiple segments of the inflatable structure are interconnected. When the annular airbag covering the upper arm is inflated, the interconnected multiple segments of the inflatable structure are inflated simultaneously. Each segment of the inflatable structure is inflated evenly, which reduces the wrinkles of the first shell and the second shell during the inflation process. The gas is evenly distributed within the accommodating space, and the pressure applied to the upper arm by the annular airbag covering the upper arm per unit area is consistent, which effectively improves the accuracy of blood pressure measurement. Moreover, the even pressure on the upper arm can also greatly improve the comfort of blood pressure measurement.

[0020] Furthermore, sensors are symmetrically positioned at two opposing partition structures. These partitions can extensively enclose the sensors, effectively preventing positional shifts and ensuring precise contact with the upper arm. This further improves the accuracy and stability of blood pressure measurements. Moreover, the protective sleeves on the sensors effectively prevent them from detaching and allow liquids to enter, further enhancing their stability.

[0021] The blood pressure measuring device of this invention includes an air source that inflates an annular air bladder through an air passage. Different numbers and specifications of air sources can be set according to the size and structural requirements of the annular air bladder to meet the air pressure requirements for blood pressure measurement. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of an annular airbag according to an embodiment of the present invention; Figure 2 This is a side view of an uninflated annular airbag. Figure 3 This is a side view of the annular airbag in its inflated state. Figure 4 A first-view structural schematic diagram of the uninflated annular airbag inside a blood pressure measuring device; Figure 5 A second-view structural schematic diagram of the uninflated annular airbag inside a blood pressure measuring device; Figure 6 A first-view structural schematic diagram of the annular airbag inside the blood pressure measuring device in an inflated state. Figure 7 This is a second-view structural diagram of the annular airbag inside the blood pressure measuring device in an inflated state.

[0024] Explanation of reference numerals in the attached figures: 1. First housing; 2. Second housing; 3. Separation structure; 4. Air nozzle; 5. First air tube; 6. Connector; 7. Sensor; 8. Inner cylinder; 9. Annular structure; 901. Accommodation space; 9011. Inflatable structure. Detailed Implementation To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] To address the issue that in blood pressure monitors of the relevant technology, the air bladder is easily squeezed or deformed during inflation, resulting in uneven pressure distribution within the air bladder, especially at the junction of the cuff and the upper arm, causing inconsistent pressure values ​​per unit area and thus affecting the accuracy of blood pressure measurement results, this utility model proposes a connected annular air bladder.

[0026] The following is combined Figures 1 to 7The following describes embodiments of the present invention.

[0027] According to an embodiment of the present invention, in one aspect, an annular airbag is provided for a blood pressure measuring device, comprising: The first housing 1 is arranged in a ring shape; The second housing 2 is arranged in a ring shape. The first housing 1 and the second housing 2 together form a ring structure 9, and a accommodating space 901 for accommodating gas is formed between the first housing 1 and the second housing 2. Multiple partition structures 3 are spaced apart in the accommodating space 901; Multiple air nozzles 4 are connected to the accommodating space 901.

[0028] The partition structure 3 in this embodiment includes an elastic element. By configuring the partition structure 3 to include an elastic element, the fit with the user's skin can be improved during use, thus enhancing the user experience. As a possible alternative implementation, the partition structure 3 may also be a non-elastic element.

[0029] like Figure 2 As shown, the partition structure 3 is along the circumference of the annular structure 9 (as shown in the attached diagram). Figure 2 (As shown by the circular dashed line in the figure) is set inside the accommodating space 901, and the partition structure 3 is fixed to the first shell 1.

[0030] Specifically, the partition structure 3 is made of foam, which is attached to the side of the first housing 1 near the accommodating space 901. By making the partition structure 3 into foam, it is easy to obtain, and the foam has a certain thickness, which can guide the expansion direction of the annular airbag in the initial stage of inflation, so that the gas can be inflated in a preset manner.

[0031] As an alternative implementation, the partition structure 3 can also be other structural components with a certain thickness, good elasticity, and flexible bending. As an alternative implementation, the partition structure 3 can also be fixed to the inner side of the first housing 1 in other ways; no further restrictions are imposed here.

[0032] In one embodiment, the thicknesses of the multiple partition structures 3 can be set differently to prevent all partition structures 3 from being too thick, which would reduce the measurable arm circumference range and improve the applicability of the annular airbag. Of course, in other embodiments, the thicknesses of the multiple partition structures 3 can also be set to the same.

[0033] It should be noted that the dimensions of the other directions of the multiple partition structures 3 can be set to be the same or different; no further restrictions are imposed here.

[0034] like Figure 1As shown, in this embodiment, four partition structures 3 are evenly arranged circumferentially. As an alternative implementation, the partition structures 3 can also be configured with 2, 3, 5, 6, etc., without further limitation. Alternatively, the partition structures 3 can be non-uniformly arranged circumferentially along the annular airbag.

[0035] like Figure 2 As shown, in this embodiment, the air nozzle 4 is disposed on the first housing 1. The air nozzle 4 is distributed on both sides of the partition structure 3 along the circumference of the annular structure 9. Each air nozzle 4 is arranged opposite to the air nozzle 4 on the adjacent side along the air outlet direction of the air nozzle 4, and opposite to the air nozzle 4 on the adjacent other side along the air outlet direction. The air outlet direction is consistent with the circumference of the annular structure 9.

[0036] Specifically, within the accommodating space 901, at positions corresponding to the locations on the annular structure 9 where the base of the adjacent air nozzle 4 is parallel to the axis of the annular structure 9, multiple interconnected inflatable structures 9011 are formed. Each inflatable structure 9011 includes a partition structure 3. By connecting the multiple inflatable structures 9011, when the annular airbag covering the upper arm is inflated, the interconnected inflatable structures 9011 inflate simultaneously, and each inflatable structure 9011 inflates evenly. This reduces wrinkles in the first shell 1 and the second shell 2 during inflation, allowing the gas to be evenly distributed within the accommodating space 901. The pressure applied to the upper arm per unit area by the annular airbag covering the upper arm is consistent, effectively improving the accuracy of blood pressure measurement. Furthermore, the even pressure on the upper arm also significantly enhances the comfort of blood pressure measurement.

[0037] like Figures 1-3 As shown, along the circumferential direction, there is an air nozzle 4 between two adjacent partition structures 3. Therefore, the number of air nozzles 4 and partition structures 3 is the same, with 4 of each. That is, along the circumferential direction, air nozzles 4 and partition structures 3 are arranged alternately.

[0038] This embodiment does not limit the position of the air nozzle 4. The air nozzle 4 can also be arranged circumferentially on the first housing 1 at a position corresponding to the partition structure 3.

[0039] like Figure 4 and Figure 5 As shown, the annular airbag in this embodiment also includes an air passage, which includes a first air tube 5 and an air nozzle 4.

[0040] The first air tube 5 connects between two opposing air nozzles 4, and a connector 6 is provided on the first air tube 5 for connecting to the second air tube. Specifically, the connector 6 is a T-junction, and the first air tube 5 and the second air tube are silicone tubes. By arranging each air nozzle 4 opposite to the air nozzle 4 on one side along the air opening direction and opposite to the air nozzle 4 on the other side along the air opening direction, it is convenient to connect the first air tube 5 and the second air tube to the air source, resulting in a more symmetrical pipeline layout. Furthermore, the arrangement of the first air tube 5, the second air tube, and the connector 6 can further save on pipeline setup and reduce the possibility of uneven inflation of the annular airbag due to asynchronous gas arrival time caused by excessively long pipelines.

[0041] Of course, in other embodiments, the orientation of the air nozzle 4 is not specifically limited, or each air nozzle 4 is directly connected to the air source through a first air pipe 5, without setting a connector 6 and a second air pipe. No further restrictions are imposed here.

[0042] like Figure 1 As shown, the annular airbag in this embodiment includes a sensor 7, which is disposed on one side of the annular structure 9 that wraps around the upper arm. Specifically, the sensor 7 is a piezoelectric sensor and is attached to the second housing 2. As an alternative implementation, the type and placement of the sensor 7 are not limited.

[0043] In this embodiment, two sensors 7 are provided, arranged opposite each other. By using two sensors 7 arranged opposite each other, pressure values ​​can be collected regardless of whether the user uses the upper left arm or the upper right arm for blood pressure measurement, ensuring the accuracy of the blood pressure measurement results. As an alternative implementation, one or more sensors 7 may be used.

[0044] like Figure 1 As shown, in this embodiment, the sensor 7 is located on the second housing 2 at a position corresponding to the non-adjacent partition structure 3, that is, two sensors 7 are respectively positioned corresponding to two opposite partition structures 3. By symmetrically arranging the sensors 7 at the two opposite partition structures 3, the partition structure 3 can cover a large area of ​​the sensor 7, effectively preventing the sensor 7 from shifting position, ensuring that the sensor 7 accurately fits the upper arm, further improving the accuracy of blood pressure measurement, and ensuring the stability of blood pressure measurement. As an alternative implementation, the sensor 7 and the partition structure 3 may not correspond.

[0045] To better protect the sensor 7, a protective layer is provided on the sensor 7 in this embodiment to isolate the sensor 7 from the external space. By providing the protective layer, the sensor 7 can be prevented from falling off and liquid from entering the sensor 7, thus improving the stability of the sensor 7. Alternatively, the annular airbag may not include a protective layer. In this embodiment, the first shell 1 and the second shell 2 are integrally formed, which facilitates the formation of an annular airbag and improves the sealing performance of the annular airbag. Specifically, the annular airbag includes a shell, which is folded in half to form the first shell 1 and the second shell 2. The first shell 1 and the second shell 2 are sealed along their long sides to form the annular airbag. As an alternative implementation, the first shell 1 and the second shell 2 can also be separate and heat-pressed together only at adjacent edges, such as the top and bottom ends.

[0046] The first shell 1 and the second shell 2 are made of rubber material. Specifically, the first shell 1 and the second shell 2 are thermoplastic polyurethane (TPU) films. In actual manufacturing, the wide sides of a TPU film are first joined together and then hot-pressed to form a preliminary ring structure 9. Then, it is folded over, and the long sides are joined together and then hot-pressed to form a ring-shaped, interconnected airbag. The side that wraps around the upper arm is the second shell 2, and the side that does not contact the upper arm is the first shell 1. As an alternative implementation, the first shell 1 and the second shell 2 can also be made of other materials, which are not limited here. As an alternative implementation, the first shell 1 and the second shell 2 can also be made of different materials.

[0047] For ease of setup, the protective layer in this embodiment is made of the same material as the first housing 1 and the second housing 2. In actual setup, a TPU film of suitable size to the sensor 7 can be cut and hot-pressed to form the protective layer, which is then placed on the sensor 7 for fixation and protection. Alternatively, the protective layer can be made of a different material than the first housing 1 and the second housing 2.

[0048] In this embodiment, the annular airbag is formed by arranging the first shell 1 and the second shell 2 of the airbag in an annular manner. The first shell 1 and the second shell 2 together form an annular structure 9, making the airbag an annular connected airbag. A accommodating space 901 for accommodating gas is formed between the first shell 1 and the second shell 2. Multiple partition structures 3 are arranged at intervals inside the accommodating space 901. The partition structures 3 separate the first shell 1 and the second shell 2 from the adhesion before inflation, effectively reducing the inflation resistance that would exist if the two were completely in contact, and greatly improving the inflation speed and efficiency.

[0049] By setting air nozzles 4 on both sides of the partition structure 3, multiple air nozzles 4 are relatively evenly distributed on both sides of the partition structure 3 to form a connected segmented inflation structure 9011. When inflating the annular airbag, multiple inflation structures 9011 are inflated simultaneously, and each inflation structure 9011 includes a partition structure 3, which ensures that the first shell 1 and the second shell 2 of each inflation structure 9011 are evenly stressed during the inflation process, thus reducing wrinkles. This effectively avoids wrinkle deformation caused by uneven stress, which would lead to uneven pressure applied by the airbag to the upper arm and affect the blood pressure measurement effect.

[0050] According to an embodiment of the present invention, another aspect provides a blood pressure measuring device, comprising: Gas source; The aforementioned annular airbag; And the inner cylinder 8, with an annular airbag installed inside the inner cylinder 8.

[0051] like Figure 4 and Figure 5 As shown, the outer wall of the inner cylinder 8 is connected to the first air pipe 5 and the connector 6. The peripheral wall of the inner cylinder 8 is provided with through holes, and the through holes are set one-to-one with the air nozzles 4. The air nozzles 4 pass through the through holes of the inner cylinder 8 and are connected to the first air pipe 5.

[0052] The blood pressure measuring device also includes an outer cylinder, which is fitted over the outer side of the inner cylinder 8, making the overall appearance of the blood pressure measuring device more aesthetically pleasing.

[0053] The blood pressure measuring device also includes a base located below the outer cylinder. An air source is mounted on the base, and the air source is connected to connector 6 via a second air tube. Alternatively, the air source can be located elsewhere, without further restrictions.

[0054] In one embodiment, the base and the outer cylinder are rotatably connected, allowing different testers to adjust the angle of the outer cylinder according to their own needs, thus making arm placement more comfortable during testing and improving the tester's user experience. Alternatively, the base and the outer cylinder can be fixedly connected.

[0055] When performing blood pressure testing, such as Figure 6 and Figure 7 As shown, the air source inflates the enclosed accommodating space 901 between the first housing 1 and the second housing 2, so that the annular airbag can fit tightly against the skin of the tester, ensuring the accuracy of the test.

[0056] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A ring-shaped airbag for use in a blood pressure measuring device, characterized in that, include: The first housing (1) is arranged in a ring shape; The second housing (2) is arranged in a ring shape. The first housing (1) and the second housing (2) together form a ring structure (9). A accommodating space (901) for accommodating gas is formed between the first housing (1) and the second housing (2). Multiple partition structures (3) are spaced apart in the accommodating space (901); Multiple air nozzles (4) are connected to the accommodating space.

2. The annular airbag according to claim 1, characterized in that, The separation structure (3) includes an elastic element.

3. The annular airbag according to claim 2, characterized in that, The elastic element is disposed circumferentially within the accommodating space (901) along the annular structure, and the elastic element is fixed to the first housing (1).

4. The annular airbag according to any one of claims 1-3, characterized in that, The air nozzle (4) is disposed on the first housing (1). The air nozzle (4) is distributed on both sides of the partition structure (3) along the circumference of the annular structure (9). Each air nozzle (4) is arranged opposite to the air nozzle (4) on the adjacent side along the air outlet direction of the air nozzle (4), and opposite to the air nozzle (4) on the adjacent other side along the air outlet direction. The air outlet direction is consistent with the circumference of the annular structure (9).

5. The annular airbag according to claim 4, characterized in that, Within the accommodating space (901), a multi-segment inflatable structure (9011) is formed at a position corresponding to the position on the annular structure (9) where the base of the adjacent air nozzle (4) is parallel to the axis of the annular structure (9). Each segment of the inflatable structure (9011) includes a partition structure (3).

6. The annular airbag according to claim 4, characterized in that, The annular airbag also includes an air passage, which includes a first air tube (5) connected to the air nozzle (4).

7. The annular airbag according to claim 6, characterized in that, The first air tube (5) is connected between the two air nozzles (4) arranged opposite to each other, and the first air tube (5) is provided with a connector (6) for connecting the second air tube.

8. The annular airbag according to any one of claims 1-3, characterized in that, The annular airbag includes a sensor (7), which is located on one side of the annular structure (9) that wraps around the upper arm.

9. The annular airbag according to claim 8, characterized in that, Two sensors (7) are provided, and the two sensors (7) are arranged opposite to each other; And / or, two sensors (7) are provided, respectively located on the second housing (2) at positions corresponding to the non-adjacent partition structures (3).

10. The annular airbag according to claim 8, characterized in that, The sensor (7) is provided with a protective layer for isolating the sensor (7) from the external space.

11. The annular airbag according to any one of claims 1-3, characterized in that, The first housing (1) and the second housing (2) are integrally formed.

12. A blood pressure measuring device, characterized in that, include: Gas source; The annular airbag according to any one of claims 1-11; and the inner cylinder (8), the annular airbag being disposed inside the inner cylinder (8).

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