Air bag and sphygmomanometer

Abstract

The invention relates to an air bag and a sphygmomanometer, and the air bag comprises a first wrapping layer, a second wrapping layer, a wrinkle positioning part and a sensor. The first wrapping layer and the second wrapping layer are sealed to form an air bag with a cavity, the fold positioning parts are arranged along two symmetrical long edges of the air bag in a staggered mode, and when the air bag wraps the upper arm part for inflation, the sensor is located on the side, facing the upper arm part, of the second wrapping layer; the cavity forms a plurality of first inflation bulge areas which are distributed in a staggered mode along the adjacent fold positioning parts, the adjacent first inflation bulge areas form folds on the air bag in the directions of the fold positioning parts, the folds are distributed in a staggered mode in the direction parallel to the wide edge of the air bag, and any two folds cannot be communicated in the direction parallel to the wide edge of the air bag; up-down through wrinkles consistent with the blood flow direction of the upper arm part cannot be formed on the second wrapping layer. Therefore, the air bag disclosed by the embodiment of the invention can be used for normally blocking the blood flow so as to obtain a real and accurate blood pressure value.

Description

Technical Field

[0001] The present disclosure relates to the technical field of medical devices, and in particular to an air bag and a sphygmomanometer. Background Art

[0002] The electronic sphygmomanometer based on Korotkoff sounds measures blood pressure through the sound of blood impacting blood vessels. During the measurement process, the cuff is wrapped around the upper arm, and the airbag in the cuff is inflated by an external inflation device. The airbag continues to expand as it is inflated, and continues to apply pressure to the upper arm until the blood vessel is compressed and the blood flow is blocked. After determining that the blood flow is blocked, the airbag is deflated to reduce pressure until the blood flow in the artery rushes through the compressed blood vessel again to produce a pulsating blood flow. The pressure in the airbag corresponding to the first Korotkoff sound and the last Korotkoff sound during the decompression process of the airbag is determined as the systolic pressure and diastolic pressure. However, the inventors have found that for Korotkoff sound sphygmomanometers, when the blood pressure value is not accurately measured, the diastolic pressure measurement value is often too high. Summary of the invention

[0003] In order to overcome the problems existing in the related art, the present disclosure provides an air bag and a sphygmomanometer.

[0004] According to a first aspect of an embodiment of the present disclosure, there is provided an airbag for blood pressure measurement, the airbag comprising: a first wrapping layer, a second wrapping layer, a fold positioning portion and a sensor; the first wrapping layer and the second wrapping layer are sealed to form the airbag having a cavity, and when the airbag is not inflated, the first wrapping layer and the second wrapping layer are in contact with each other; the fold positioning portions are staggered along two symmetrical long sides of the airbag, respectively, and when the airbag wraps an upper arm for inflating, the cavity forms a plurality of staggered first inflatable bulging areas along adjacent ones of the fold positioning portions, and adjacent ones of the first inflatable bulging areas form folds on the airbag along the direction of the fold positioning portions, and the folds are staggered along a direction parallel to the wide side of the airbag and any two of the folds cannot penetrate in a direction parallel to the wide side of the airbag; the sensor is arranged on a side of the second wrapping layer facing the upper arm when the airbag wraps the upper arm.

[0005] In some embodiments, the fold positioning portion is an indentation structure, and the indentation structure is formed by laminating the first wrapping layer and the second wrapping layer at a preset position.

[0006] In some embodiments, the indentation structure extends from a long side of the airbag to the midline of the airbag, so that one end point of all the indentation structures are distributed at two symmetrical long side positions of the airbag, and the other end points of all the indentation structures have a first preset distance from the midline of the airbag.

[0007] In some embodiments, the indentation structure is in the shape of a long strip, and the length direction of the long strip is perpendicular to the long side direction of the airbag.

[0008] In some embodiments, the airbag further includes a support sheet, and the support sheet is disposed on a side of the second wrapping layer facing toward and / or away from the cavity.

[0009] In some embodiments, there are a plurality of support sheets, and the plurality of support sheets are arranged in parallel in different rows and staggered on the second wrapping layer, and are staggered with adjacent pleat positioning portions.

[0010] In some embodiments, when the airbag wraps the upper arm for inflating, two adjacent pleated positioning portions and an adjacent supporting sheet form a second inflatable bulge area in the cavity, and part of the second inflatable bulge area is symmetrical and staggered along the midline of the airbag, and pleats are formed between two adjacent second inflatable bulge areas, and any two of the pleats cannot be connected in a direction parallel to the wide side of the airbag.

[0011] In some embodiments, the midline of the airbag is equidistant from two symmetrical long sides of the airbag.

[0012] In some embodiments, the airbag further includes an air port, which is disposed in the first wrapping layer and communicates with the cavity to form an air path for inflating and deflating the airbag.

[0013] According to a second aspect of an embodiment of the present disclosure, there is provided a sphygmomanometer comprising the airbag described in any one of the first aspects above.

[0014] The technical solution provided by the embodiment of the present disclosure may include the following beneficial effects: by staggering the wrinkle positioning parts along the two symmetrical long sides of the airbag, the wrinkles formed between the multiple first inflatable bulge areas near the first long side of the airbag and the wrinkles formed by the multiple first inflatable bulge areas near the second long side of the airbag are staggered with each other in the direction parallel to the first wide side of the airbag, and then when the airbag is inflated, the wrinkles formed on the airbag between the multiple first inflatable bulge areas will not form through wrinkles between the first long side and the second long side of the airbag, that is, no through wrinkles will be formed in the direction parallel to the wide side of the airbag. In other words, the airbag of the embodiment of the present disclosure cannot form up and down through wrinkles on the airbag that are consistent with the blood flow direction of the upper arm, ensuring that the areas where the second wrapping layer contacts the upper arm are all effective pressurized areas, and the wrinkles that are not in contact with the upper arm cannot provide flow space for blood flow. Therefore, the airbag of the embodiment of the present disclosure can block the blood flow normally to obtain a true and accurate blood pressure value.

[0015] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0017] Figure 1 It is a front view of an airbag in a non-inflated state according to an exemplary embodiment.

[0018] Figure 2 It is a schematic structural diagram of a first wrapping layer of an airbag according to an exemplary embodiment.

[0019] Figure 3 It is a schematic structural diagram of a second wrapping layer of an airbag according to an exemplary embodiment.

[0020] Figure 4 It is a schematic diagram of the structure when the airbag is inflated and viewed from a 30° upward angle according to an exemplary embodiment.

[0021] Figure 5 yes Figure 4 Middle AA section view.

[0022] Figure 6 yes Figure 4 Middle BB section view.

[0023] Figure 7 The figure is a rear view of an airbag in an inflated state according to an exemplary embodiment.

[0024] Figure 8 The figure is a bottom view of an airbag in an inflated state according to an exemplary embodiment.

[0025] Fig. 9 It is a schematic diagram of the structure of an airbag in an uninflated state according to another exemplary embodiment.

[0026] Fig.10 It is a schematic diagram of the structure of an airbag in an inflated state according to another exemplary embodiment.

[0027] Fig.11 It is a schematic diagram showing the arrangement of a support sheet in an airbag according to another exemplary embodiment.

[0028] Fig.12 yes Fig.11 A top view of the arrangement of the middle support plates. DETAILED DESCRIPTION

[0029] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0030] In the related art, for example, a cuff-type sphygmomanometer, the airbag of the sphygmomanometer is in the shape of a long sheet when not inflated. When measuring blood pressure, the sheet-shaped airbag is wrapped around the circumference of the upper arm, and the airbag is wrapped and fixed to the upper arm through a fixing component of the airbag, such as Velcro, and can be appropriately adjusted according to the thickness of the upper arm. When the airbag fixed to the upper arm is inflated, the airbag wrapped around the upper arm exerts pressure on the upper arm due to expansion. At this time, the outer side of the annular airbag expands outwards and the inner side expands inwards, which will cause the inner side of the airbag to form multiple wrinkles in uncertain places during the inflation process. When the wrinkles on the inner side appear to be connected up and down along the inner longitudinal direction, that is, the wrinkles form a straight line along the longitudinal direction of the wide side of the airbag that runs through both ends of the airbag, at this time, the area where the wrinkles are formed cannot contact the upper arm, resulting in the blood vessels corresponding to the area being unable to be compressed and closed to block blood flow. In order to compress and block the blood flow of the blood vessels corresponding to the untouched upper arm area, the inflation pressure of the airbag needs to be continuously increased, and then the volume of the inflated bulge area on both sides of the fold is increased to shrink the fold, so as to compress and block the blood flow of the blood vessels corresponding to the area. However, by increasing the inflation pressure of the airbag, the systolic and diastolic pressures obtained during the airbag deflation and decompression process are generally higher, especially the higher diastolic pressure.

[0031] In order to solve the above technical problems, the present disclosure provides an airbag and a sphygmomanometer, wherein the airbag limits the formation position of the inflated bulge area through the fold positioning part, so that the folds between the inflated bulge areas toward the upper arm are regularly distributed and cannot pass through from top to bottom, thereby effectively blocking the blood flow.

[0032] Figure 1 1 is a front view of an airbag 10 in an uninflated state according to an exemplary embodiment. Figure 2 1 is a schematic structural diagram of a first wrapping layer 1 of an airbag 10 according to an exemplary embodiment. Figure 3 is a schematic structural diagram of a second wrapping layer 2 of an airbag 10 according to an exemplary embodiment. Figure 4 It is a schematic diagram of the structure of an airbag 10 in an inflated state when viewed from above with a viewing angle of 30° offset according to an exemplary embodiment.

[0033] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the airbag 10 includes a first wrapping layer 1, a second wrapping layer 2, a fold positioning portion 3 and a sensor 4. Figure 2 and Figure 3 As shown, the first wrapping layer 1 and the second wrapping layer 2 are both rectangular sheets with equal size. After the first wrapping layer 1 and the second wrapping layer 2 are stacked with their long sides corresponding to the long sides and their wide sides corresponding to the wide sides, the edge of the first wrapping layer 1 is sealed and connected with the edge of the second wrapping layer 2 to form an airbag 10 with a cavity. Figure 1 As shown, when the airbag 10 formed by the first wrapping layer 1 and the second wrapping layer 2 is not inflated, the first wrapping layer 1 and the second wrapping layer 2 are attached to each other. The airbag 10 is rectangular, having symmetrical first long sides 101 and second long sides 102, and symmetrical first wide sides 103 and second wide sides 104.

[0034] A plurality of fold positioning portions 3 are respectively provided on the first long side 101 and the second long side 102 of the airbag 10, and the plurality of fold positioning portions 3 located on the first long side 101 and the plurality of fold positioning portions 3 located on the second long side 102 are parallel to each other and staggered in a direction parallel to the first wide side 103 of the airbag 10, and each fold positioning portion 3 is parallel to the two wide sides of the airbag 10. The fold positioning portions 3 are used to limit the formation position of the first inflation bulge area 61, and further limit the position of the folds formed between two adjacent first inflation bulge areas 61.

[0035] Figure 7 FIG. 1 is a rear view of an airbag 10 in an inflated state according to an exemplary embodiment. Figure 8 FIG. 1 is a bottom view of an airbag 10 in an inflated state according to an exemplary embodiment. Figure 4 , Figure 7 and Figure 8 As shown, when the airbag 10 is inflated, a first inflation bulge area 61 is formed between two adjacent pleat positioning portions 3. Among them, the two adjacent pleat positioning portions 3 refer to two adjacent pleat positioning portions 3 located on the same long side of the airbag 10. That is to say, when the airbag 10 is inflated, the cavity of the airbag 10 forms multiple first inflation bulge areas 61 near the first long side 101 and near the second long side 102. In addition, the multiple first inflation bulge areas 61 near the first long side 101 of the airbag 10 and the multiple first inflation bulge areas 61 near the second long side 102 of the airbag 10 are offset from each other in a direction parallel to the first wide side 103 of the airbag 10. The wrinkles formed between the multiple first inflatable bulge areas 61 near the first long side 101 of the airbag 10 and the wrinkles formed by the multiple first inflatable bulge areas 61 near the second long side 102 of the airbag 10 are offset from each other in a direction parallel to the first wide side 103 of the airbag 10, and will not form a penetration between the first long side 101 and the second long side 102 of the airbag 10. Figure 5 yes Figure 4 Middle AA section view. Figure 6 yes Figure 4 BB section view. Figures 4 to 6 As shown, when the airbag 10 is inflated, the wrinkles formed by the wrinkle positioning portion 3 between two adjacent first inflation bulge areas 61 will not penetrate through the two ends of the airbag 10 in the longitudinal direction along the wide side of the airbag 10 .

[0036] What needs to be explained here is that Figure 1 , Figure 4 , Figure 7 and Figure 8 All of them are in the state where the airbag 10 is not wrapped around the upper arm. When measuring blood pressure, the uninflated airbag 10 is wrapped around the circumference of the upper arm, that is, the long side of the airbag 10 is wrapped around the upper arm along the circumference of the upper arm, and the second wrapping layer 2 is attached to the upper arm, so that the sensor 4 arranged on the side of the second wrapping layer 2 facing the upper arm can be attached to the upper arm and obtain the blood pressure value. The airbag 10 is then fixed to the upper arm by a fixing component, and it can be appropriately adjusted according to the thickness of the upper arm. Among them, the fixing component can be a structure such as Velcro or a buckle. Those skilled in the art can specifically configure the fixing component according to actual conditions, and the present disclosure does not specifically limit the fixing component, for example, Velcro, a buckle or a zipper. Since the wrinkles formed between the multiple first inflatable bulge areas 61 near the first long side 101 of the airbag 10 and the wrinkles formed by the multiple first inflatable bulge areas 61 near the second long side 102 of the airbag 10 are mutually offset in a direction parallel to the first wide side 103 of the airbag 10, when the airbag 10 is inflated, the wrinkles formed on the airbag 10 between the multiple first inflatable bulge areas 61 will not form a through connection between the first long side 101 and the second long side 102 of the airbag 10. In other words, the airbag 10 of the embodiment of the present disclosure cannot form vertical through wrinkles on the second wrapping layer 2 that are consistent with the blood flow direction of the upper arm, ensuring that the areas where the second wrapping layer 2 contacts the upper arm are all effective pressurized areas, and the wrinkles that are not in contact with the upper arm cannot provide flow space for blood flow. Therefore, the airbag 10 of the embodiment of the present disclosure can block the blood flow normally to obtain a true and accurate blood pressure value.

[0037] It should be noted that, although the embodiment of the present disclosure is introduced in the above embodiment, the shape of the airbag 10 of the embodiment of the present disclosure is not limited to a rectangle, and can be any long strip shape. The two opposite sides in the length direction of the long strip structure of the airbag 10 are respectively used as the first wide side 103 and the second wide side 104 of the airbag 10, and the two opposite sides in the width direction of the long strip structure of the airbag 10 are respectively used as the first long side 101 and the second long side 102 of the airbag 10.

[0038] In some embodiments, the wrinkle positioning portion 3 is an indentation structure. Figure 2 and Figure 3 As shown, the first wrapping layer 1 and the second wrapping layer 2 are respectively provided with a plurality of preset positions 31. When the first wrapping layer 1 and the second wrapping layer 2 are stacked, each preset position 31 located at the first wrapping layer 1 corresponds to each preset position 31 located at the second wrapping layer 2. The first wrapping layer 1 and the second wrapping layer 2 are bonded at the preset positions 31, so that the first wrapping layer 1 and the second wrapping layer 2 are respectively connected at each preset position 31 to form an indentation structure.

[0039] By providing the fold positioning part 3 of the indentation structure, when the airbag 10 is inflated, the first wrapping layer 1 and the second wrapping layer 2 at the location of the fold positioning part 3 will not be separated due to the expansion of the cavity, and the first wrapping layer 1 and the second wrapping layer 2 at the location between any two fold positioning parts 3 can be separated. Therefore, when the airbag 10 is inflated, a first inflation bulge area 61 can be formed between any two fold positioning parts 3.

[0040] like Figure 1 As shown, the airbag 10 of the embodiment of the present disclosure has a median line 105. The median line 105 of the airbag 10 is located between the first long side 101 and the second long side 102 of the airbag 10, and the distance between the median line 105 and the first long side 101 is equal to the distance between the median line 105 and the second long side 102. The median line 105 is defined on the airbag 10 to provide a reference for the setting position of the pleat positioning portion 3 on the airbag 10.

[0041] In the disclosed embodiment, the pleat positioning portion 3 extends from the long side of the airbag 10 to the midline 105 of the airbag 10. That is, one end of the indentation structure is located at the first long side 101 or the second long side 102 of the airbag 10, and the other end of the indentation structure extends to the midline 105 of the airbag 10. The end of the indentation structure extending to the midline 105 may have a first preset distance from the midline 105, or the end point of the extended end of the indentation structure may be located at the midline 105. Alternatively, one end of a portion of the indentation structure is located at the first long side 101, and the end points of the other end are located on the same straight line and the straight line is parallel to the first long side 101. One end of another portion of the indentation structure is located at the second long side 102, and the end points of the other end are located on the same straight line and the straight line is parallel to the second long side 102.

[0042] It should be noted here that the indentation structure is located at one end of the first long side 101 and may have a third preset distance from the first long side 101. Similarly, the indentation structure is located at one end of the second long side 102 and may have a fourth preset distance from the second long side 102. In other words, the connection between the first wrapping layer 1 and the second wrapping layer 2 has a third preset distance or a fourth preset distance from the indentation structure, so as to facilitate the processing and manufacturing of the indentation structure on the first wrapping layer 1 and the second wrapping layer 2 which are stacked.

[0043] By setting a suitable first preset distance, the length of the indentation structure in a direction perpendicular to the first long side 101 or the second long side 102 is controlled to avoid an indentation structure that is too long so that the wrinkles between the first inflatable bulge areas 61 continue to extend along the indentation structure, causing the wrinkles to pass through between the first long side 101 and the second long side 102 of the airbag 10, or an indentation structure that is too short so that it is difficult to limit the formation position of the first inflatable bulge area 61, resulting in uncertainty in the position of the wrinkles between the first inflatable bulge areas 61.

[0044] In some embodiments, the first preset distance is 0, that is, one end of the indentation structure is located at the first long side 101 or the second long side 102 of the airbag 10, and the other end of the indentation structure is located at the midline 105 of the airbag 10. When the airbag 10 is inflated, a plurality of first inflatable bulge areas 61 are formed. The indentation structure extending from the first long side 101 or the second long side 102 of the airbag 10 to the midline 105 of the airbag 10 allows any two first inflatable bulge areas 61 located on both sides of the midline 105 to pass through the indentation structure and be staggered along the midline 105, so that no folds that are consistent with the blood flow direction of the upper arm can be formed on the airbag 10.

[0045] In some embodiments, the first preset distance is greater than 0 and less than the length of the first wide side 103 or the second wide side 104 of the airbag 10. That is, one end of the indentation structure is located at the first long side 101 or the second long side 102 of the airbag 10, and the other end of the indentation structure extends toward the midline 105 of the airbag 10 and does not penetrate the midline 105. The indentation structure located at the first long side 101 and the indentation structure located at the second long side 102 have a second preset distance in a direction perpendicular to the midline 105, and the second preset distance is twice the first preset distance. By increasing the distance between the indentation structures located at the two long sides in a direction perpendicular to the midline 105, the probability of wrinkles being formed between any two first inflatable bulge areas 61 located on both sides of the midline 105 is reduced. Or one end of the indentation structure is located at the first long side 101 or the second long side 102 of the airbag 10, and the other end of the indentation structure extends toward and passes through the center line 105 of the airbag 10, and does not extend to the opposite long side. By increasing the length of the indentation structure in a direction perpendicular to the center line 105, the limiting effect on the formation position of the first inflation bulge area 61 is improved.

[0046] In the embodiment of the present disclosure, the shape of the indentation structure is a long strip. Figure 2 and Figure 3As shown, the first wrapping layer 1 and the second wrapping layer 2 are stacked, and a long strip-shaped indentation structure is formed by hot pressing at a preset position 31 of the first wrapping layer 1 or a preset position 31 of the second wrapping layer 2, so that the first wrapping layer 1 and the second wrapping layer 2 are connected at the indentation structure position. By setting the shape of the indentation structure to a long strip, the difficulty of preparing the indentation structure is reduced.

[0047] In the embodiment of the present disclosure, the length direction of the long strip indentation structure is perpendicular to the first long side 101 or the second long side 102 of the airbag 10, that is, the length direction of the fold positioning portion 3 is perpendicular to the first long side 101 or the second long side 102 of the airbag 10. Figure 1 As shown, the multiple fold positioning parts 3 located at the first long side 101 of the airbag 10 and the multiple fold positioning parts 3 located at the second long side 102 of the airbag 10 are mutually offset in a direction parallel to the first wide side 103 of the airbag 10. By setting the length direction of the fold positioning parts 3 perpendicular to the first long side 101 or the second long side 102 of the airbag 10, the extension lines of the length directions of any two fold positioning parts 3 located at different long sides of the airbag 10 will not overlap, and thus the folds formed between the multiple first inflatable bulge areas 61 near the first long side 101 of the airbag 10 will not be directly connected with the folds formed between the multiple first inflatable bulge areas 61 near the second long side 102 of the airbag 10, so as to avoid the area formed by the direct connection of the two folds providing flow space for blood flow.

[0048] In some embodiments, the multiple indentation structures corresponding to the multiple wrinkle positioning parts 3 include at least a first row of indentation structures, a second row of indentation structures, and a third row of indentation structures. The length directions of the first row of indentation structures, the second row of indentation structures, and the third row of indentation structures are parallel to each other and are staggered in a direction perpendicular to the median line 105 of the airbag 10. There are multiple first row indentation structures, multiple first row indentation structures are arranged along the first long side 101 of the airbag 10, one end of each first row indentation structure is located at the first long side 101 of the airbag 10, and the other end of each first row indentation structure is toward the median line 105 of the airbag 10 and does not pass through the median line 105. There are multiple second row indentation structures, multiple second row indentation structures are arranged along the median line 105 of the airbag 10 and pass through the median line 105, one end of each second row indentation structure extends toward the first long side 101 of the airbag 10, and the other end of each second row indentation structure extends toward the second long side 102 of the airbag 10. There are multiple third-row indentation structures, which are arranged along the second long side 102 of the airbag 10. One end of each third-row indentation structure is located at the second long side 102 of the airbag 10, and the other end of each third-row indentation structure faces the midline 105 of the airbag 10 and does not pass through the midline 105. When the airbag 10 is inflated, multiple first-row indentation structures form multiple first-row indentation areas 61, multiple second-row indentation structures form multiple first-row indentation areas 61, and multiple third-row indentation structures form multiple first-row indentation areas 61. In other words, three rows of first-row indentation areas 61 are formed when the airbag 10 is inflated, so that the second wrapping layer 2 applies more uniform pressure to the upper arm.

[0049] In the disclosed embodiment, the airbag 10 further includes a support sheet 7. The support sheet 7 is disposed on the second wrapping layer 2, and the sum of the hardness of the support sheet 7 and the hardness of the second wrapping layer 2 in contact with the support sheet 7 is greater than the hardness of the second wrapping layer 2, so as to ensure that wrinkles are not formed in the area covered by the support sheet 7 on the second wrapping layer 2.

[0050] In some embodiments, the support sheet 7 is a strip-shaped soft plastic sheet. The support sheet 7 is made of a relatively soft material to facilitate the formation of an inflatable bulge area and has a certain wrinkle resistance.

[0051] In some embodiments, the support sheet 7 is disposed on the side of the second wrapping layer 2 facing the cavity to ensure that the support sheet 7 does not directly contact the upper arm during the inflation of the airbag 10, thereby improving the comfort of the user.

[0052] In some embodiments, the support sheet 7 is disposed on a side of the second wrapping layer 2 away from the cavity, that is, the support sheet 7 does not need to be disposed inside the cavity, and the support sheet 7 can be directly attached to the surface of the second wrapping layer 2 for ease of processing and preparation.

[0053] In some embodiments, a plurality of support sheets 7 are respectively disposed on a side of the second wrapping layer 2 facing away from the cavity and a side of the second wrapping layer 2 facing the cavity. For example, a plurality of support sheets 7 are staggered along both sides of the second wrapping layer 2 to increase the hardness of the area covered by the support sheets 7 on the second wrapping layer 2 and to prevent wrinkles from forming in the area covered by the support sheets 7.

[0054] In some embodiments, support sheets 7 are provided at symmetrical positions of the sensors 4. That is, corresponding support sheets 7 are distributed at the positions of the sensors 4, wherein the sensors 4 and the corresponding support sheets 7 are respectively located at opposite sides of the second wrapping layer 2, and the sensors 4 are located at the side of the second wrapping layer 2 facing the upper arm when the airbag 10 wraps the upper arm. The support sheet 7 is located at the side of the second wrapping layer 2 facing the cavity.

[0055] In some embodiments, the support sheet 7 corresponding to the sensor 4 has a curved structure for avoiding the sensor 4 to prevent the support sheet 7 having a certain hardness from supporting the sensor 4 and affecting the measurement accuracy of the sensor 4 .

[0056] For example, the middle portion of the support sheet 7 corresponding to the sensor 4 is in an Ω shape, which is used to avoid the sensor 4 .

[0057] Fig. 9 1 is a schematic structural diagram of an airbag 10 in an uninflated state according to another exemplary embodiment. Fig.10 1 is a schematic structural diagram of an airbag 10 in an inflated state according to another exemplary embodiment. Fig. 9 and Fig.10 The airbag 10 shown is wrapped around the upper arm, and the airbag 10 is in a ring structure. Fig. 9 and Fig.10 As shown, in another embodiment of the present disclosure, the support sheet 7 is in the shape of a long strip, and a plurality of support sheets 7 are arranged in parallel and staggered in different rows on the second wrapping layer 2. That is, the length direction of the plurality of support sheets 7 is the same as the circumferential direction of the annular second wrapping layer 2, and they are respectively located in different circumferential directions of the second wrapping layer 2. Moreover, the support sheet 7 and the adjacent pleat positioning portion 3 are staggered in the axial direction of the annular second wrapping layer 2, so that the pleat positioning portion 3 and the support sheet 7 will not affect each other when the airbag 10 is inflated.

[0058] In another embodiment of the present disclosure, a plurality of support sheets 7 are respectively located between any two adjacent pleated positioning portions 3, and when the airbag 10 is inflated, two adjacent pleated positioning portions 3 and the support sheet 7 located between the two pleated positioning portions 3 form a second inflatable bulging area 62. It can be understood that due to the addition of the support sheet 7, the number of the second inflatable bulging areas 62 will be greater than the first inflatable bulging areas 61, and the formation positions of some first inflatable bulging areas 61 and the second inflatable bulging areas 62 are roughly the same, and can be regarded as the same bulging area, but due to the addition of the support sheet 7, some first inflatable bulging areas 61 will be changed from an independent first inflatable bulging area 61 running through the wide side direction of the airbag 10 to two second inflatable bulging areas 62 staggered along the center line.

[0059] It should be noted here that, when the airbag 10 is inflated, the first wide side 103 and the second wide side 104 of the airbag 10 are independent of each other and sealed, so the first wide side 103 and the second wide side 104 of the airbag 10 can both be regarded as the pleat positioning part 3.

[0060] Fig.11 FIG. 1 is a schematic diagram showing the arrangement of the support sheet 7 in an airbag 10 according to another exemplary embodiment. Fig.11 As shown, the support sheets 7 include three rows of support sheets 7 , which are respectively referred to as a first row of support sheets 71 , a second row of support sheets 72 and a third row of support sheets 73 .

[0061] The first row of support sheets 71 is arranged on the upper side of the median line 105 of the second wrapping layer 2, that is, the first row of support sheets 71 is located between the median line 105 of the airbag 10 and the first long side 101 of the airbag 10. The second row of support sheets 72 is symmetrically arranged at a position adapted to the sensor 4. The third row of support sheets 73 is arranged on the lower side of the median line 105 of the second wrapping layer 2, that is, the third row of support sheets 73 are respectively located between the median line 105 of the airbag 10 and the second long side 102 of the airbag 10. In other words, the first row of support sheets 71 is arranged close to the first long side 101 of the airbag 10, the second row of support sheets 72 is arranged close to the middle of the airbag 10, and the third row of support sheets 73 is arranged close to the second long side 102 of the airbag 10.

[0062] The first row of support sheets 71 , the second row of support sheets 72 and the third row of support sheets 73 are staggered in the longitudinal direction of the second wrapping layer 2 . Fig.12 yes Fig.11 The top view of the arrangement of the middle support sheet 7 is as follows: Fig.12 As shown, in one example, when the airbag 10 is wrapped around the upper arm and is not inflated, in the axial direction of the airbag 10, the projections of the first row of support sheets 71, the second row of support sheets 72 and the third row of support sheets 73 are in the shape of a closed ring to avoid the formation of through wrinkles in the longitudinal direction of the second wrapping layer 2.

[0063] In some embodiments, among the multiple second inflatable bulge areas 62 formed by the fold positioning portion 3 and the support sheet 7, some of the second inflatable bulge areas 62 are symmetrically and staggeredly distributed along the midline 105 of the airbag 10, and folds are formed between two adjacent second inflatable bulge areas 62, and any two folds cannot be connected in the direction parallel to the wide side of the airbag 10, that is, perpendicular to the first long side 101 or the second long side 102 of the airbag 10. Ensure that the areas where the second wrapping layer 2 contacts the upper arm are all effective pressurized areas, and the folds that are not in contact with the upper arm cannot provide flow space for blood flow.

[0064] In the embodiments of the present disclosure, Figure 1 and Fig.10 As shown, the airbag 10 further includes an air port 5 , which is connected to the cavity to form an air path for inflating and deflating the airbag 10 .

[0065] In some embodiments, the air port 5 is disposed in the first wrapping layer 1 , so that when the airbag 10 is wrapped around the upper arm, the air port 5 faces outwards for convenience in inflating and deflating the airbag 10 .

[0066] In some embodiments, there are multiple air ports 5. The multiple air ports 5 are arranged at equal intervals on the first wrapping layer 1, and the multiple air ports 5 are arranged in a square along the first long side 101 or the second long side 102 of the airbag 10, so that during the inflation of the airbag 10, the first inflation bulge area 61 or the second inflation bulge area 62 expands more evenly, thereby avoiding excessive deformation of the second wrapping layer 2 locally, resulting in insufficient pressure on the upper arm.

[0067] In some embodiments, the air port 5 matches the support sheet 7. When the airbag 10 is inflated, two adjacent pleat positioning portions 3 and an adjacent support sheet 7 form a second inflatable bulge area 62 in the cavity. By arranging the air ports 5 and the support sheet 7 in correspondence, when the air ports 5 inflate the cavity, each air port 5 can inflate the corresponding second inflatable bulge area to improve the uniformity of the expansion of the first wrapping layer 1 or the second wrapping layer 2.

[0068] In the embodiment of the present disclosure, the airbag 10 is made of two rectangular flexible sheets by hot pressing, and the two flexible sheets are respectively used to prepare the first wrapping layer 1 and the second wrapping layer 2. The long sides of the two flexible sheets correspond to the long sides, and the wide sides correspond to the wide sides. The edges of the two flexible sheets are hot pressed to make the two flexible sheets sealed and connected to form the airbag 10 with a cavity.

[0069] In some embodiments, the airbag 10 is prepared by hot pressing a single rectangular flexible sheet, which is folded in half along the long side or the wide side to align the edges of the flexible sheet, and the two parts of the stacked flexible sheet are respectively used to prepare the first wrapping layer 1 and the second wrapping layer 2. The aligned edges of the flexible sheets are hot pressed to form the airbag 10 with a cavity.

[0070] In some embodiments, the flexible sheet is made of thermoplastic polyurethane (TPU) rubber.

[0071] Based on the same inventive concept, the present disclosure also provides a sphygmomanometer, comprising the airbag 10 involved in any of the above embodiments.

[0072] The sphygmomanometer of the disclosed embodiment is used for blood pressure measurement. The uninflated airbag 10 is wrapped around the circumference of the upper arm, that is, the long side of the airbag 10 is wrapped around the upper arm along the circumference of the upper arm, and the second wrapping layer 2 is attached to the upper arm, so that the sensor 4 arranged on the side of the second wrapping layer 2 facing the upper arm can be attached to the upper arm and obtain the blood pressure value. The airbag 10 is then fixed to the upper arm by a fixing component, and can be appropriately adjusted according to the thickness of the upper arm. Since the wrinkles formed between the multiple first inflatable bulging areas 61 close to the first long side 101 of the airbag 10 and the wrinkles formed by the multiple first inflatable bulging areas 61 close to the second long side 102 of the airbag 10 are mutually offset in a direction parallel to the first wide side 103 of the airbag 10, when the airbag 10 is inflated, the wrinkles formed between the multiple first inflatable bulging areas 61 in the second wrapping layer 2 will not form a penetration between the first long side 101 and the second long side 102 of the airbag 10. Ensure that the areas where the second wrapping layer 2 contacts the upper arm are all effective pressurized areas, and the wrinkles that are not in contact with the upper arm cannot provide flow space for blood flow. At this time, the sensor 4 can obtain a true and accurate blood pressure value.

[0073] It is to be understood that in the present disclosure, "plurality" refers to two or more than two, and other quantifiers are similar. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. The singular forms "a", "the" and "the" are also intended to include plural forms, unless the context clearly indicates other meanings.

[0074] It is further understood that the terms "first", "second", etc. are used to describe various information, but such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other, and do not indicate a specific order or degree of importance. In fact, the expressions "first", "second", etc. can be used interchangeably. For example, without departing from the scope of the present disclosure, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information.

[0075] It will be further understood that the terms “center”, “longitudinal”, “lateral”, “front”, “back”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation.

[0076] It can be further understood that, unless otherwise specified, “connection” includes a direct connection without other components between the two, and also includes an indirect connection with other components between the two.

[0077] It is further understood that, although the operations are described in a specific order in the drawings in the embodiments of the present disclosure, it should not be understood as requiring the operations to be performed in the specific order shown or in a serial order, or requiring the execution of all the operations shown to obtain the desired results. In certain environments, multitasking and parallel processing may be advantageous.

[0078] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0079] It should be understood that the present disclosure is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the scope of the appended claims.

Claims

1. An air bag for measuring blood pressure, characterized in that: include: a first wrapping layer, a second wrapping layer, a fold positioning portion, and a sensor; The first wrapping layer and the second wrapping layer are sealed to form the airbag having a cavity, and when the airbag is not inflated, the first wrapping layer and the second wrapping layer are in contact with each other; The pleated positioning parts are staggered along two symmetrical long sides of the airbag, respectively. When the airbag wraps the upper arm for inflation, the cavity forms a plurality of staggered first inflation bulge areas along adjacent pleated positioning parts. Adjacent first inflation bulge areas form pleats on the airbag along the direction of the pleated positioning parts. The pleats are staggered along a direction parallel to the wide side of the airbag, and any two pleats cannot penetrate in the direction parallel to the wide side of the airbag. The sensor is arranged on a side of the second wrapping layer facing the upper arm when the airbag wraps the upper arm.

2. The airbag according to claim 1, characterized in that: The fold positioning portion is an indentation structure, and the indentation structure is formed by laminating the first wrapping layer and the second wrapping layer at a preset position.

3. The airbag according to claim 2, characterized in that: The indentation structure extends from a long side of the airbag to the midline of the airbag, so that one end point of all the indentation structures is distributed at two symmetrical long side positions of the airbag, and the other end points of all the indentation structures have a first preset distance from the midline of the airbag.

4. The airbag according to claim 2, characterized in that: The indentation structure is in the shape of a long strip, and the length direction of the long strip is perpendicular to the long side direction of the airbag.

5. The airbag according to any one of claims 1 to 4, characterized in that: The airbag further comprises a supporting sheet, and the supporting sheet is arranged on a side of the second wrapping layer facing towards and / or away from the cavity.

6. The airbag according to claim 5, characterized in that: There are a plurality of support sheets, and the plurality of support sheets are arranged in parallel in different rows and staggered on the second wrapping layer, and are staggered with the adjacent fold positioning parts.

7. The airbag according to claim 5, characterized in that: When the airbag wraps the upper arm and is inflated, two adjacent wrinkle positioning portions and an adjacent supporting sheet form a second inflation bulge area in the cavity, and part of the second inflation bulge area is symmetrical and staggered along the midline of the airbag, and wrinkles are formed between two adjacent second inflation bulge areas, and any two wrinkles cannot be connected in a direction parallel to the wide side of the airbag.

8. The airbag according to claim 7, characterized in that: The midline of the airbag is equidistant from two symmetrical long sides of the airbag.

9. The airbag according to claim 7, characterized in that: The airbag further includes an air port, which is disposed in the first wrapping layer and communicates with the cavity to form an air path for inflating and deflating the airbag.

10. A sphygmomanometer, characterized in that: The invention comprises the airbag as described in any one of claims 1 to 9.

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