Air bag and sphygmomanometer

Abstract

The utility model 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 utility model can be used for normally blocking the blood flow so as to obtain a real and accurate blood pressure value.

Description

Technical Field

[0001] This disclosure relates to the field of medical device technology, and in particular to an airbag and a blood pressure monitor. Background Technology

[0002] Electronic blood pressure monitors based on Korotkoff sounds measure blood pressure by the sound of blood hitting blood vessels. During measurement, a cuff is wrapped around the upper arm, and an external inflation device inflates the bladder inside the cuff. As the bladder inflates, it continuously applies pressure to the upper arm until the blood vessels are compressed and blood flow is blocked. Once blood flow is confirmed to be blocked, the bladder is deflated until blood flow resumes through the compressed blood vessel, producing a pulsating flow. The pressure inside the bladder corresponding to the first and last Korotkoff sounds during the decompression process is defined as systolic and diastolic blood pressure, respectively. However, the inventors discovered that with Korotkoff sound blood pressure monitors, in cases where blood pressure measurements are inaccurate, diastolic blood pressure readings often appear too high. Utility Model Content

[0003] To overcome the problems existing in the related technologies, this disclosure provides an airbag and a blood pressure monitor.

[0004] According to a first aspect of the present disclosure, an airbag is provided for blood pressure measurement. The airbag includes: a first wrapping layer, a second wrapping layer, pleated positioning portions, and a sensor. The first wrapping layer and the second wrapping layer are sealed to form the airbag having a cavity. When the airbag is not inflated, the first wrapping layer and the second wrapping layer are in contact. The pleated positioning portions are respectively offset along two symmetrical long sides of the airbag. When the airbag is inflated to cover the upper arm, the cavity forms a plurality of offset first inflation bulge areas along adjacent pleated positioning portions. Adjacent first inflation bulge areas form pleats on the airbag along the direction of the pleated positioning portions. The pleats are offset along a direction parallel to the wide side of the airbag, and any two pleats cannot penetrate each other in a direction parallel to the wide side of the airbag. The sensor is disposed on one side of the second wrapping layer facing the upper arm when the airbag covers the upper arm.

[0005] In some embodiments, the pleated positioning portion is an indentation structure, which is formed by the first wrapping layer and the second wrapping layer being bonded together at a preset position.

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

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

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

[0009] In some embodiments, there are multiple support sheets, which are arranged in parallel and staggered positions on the second wrapping layer and are also staggered from the adjacent pleated positioning portions.

[0010] In some embodiments, when the airbag is inflated around the upper arm, two adjacent pleated positioning portions and one adjacent support piece form a second inflatable bulge area in the cavity. Part of the second inflatable bulge area is symmetrically and staggered along the midline of the airbag, and pleats are formed between two adjacent second inflatable bulge areas. Any two 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 the two symmetrical long sides of the airbag.

[0012] In some embodiments, the airbag further includes an air inlet disposed in the first wrapping layer and communicating with the cavity to form an air passage for inflating and deflating the airbag.

[0013] According to a second aspect of the present disclosure, a blood pressure monitor is provided, comprising the air bladder described in any one of the first aspects above.

[0014] The technical solution provided by the embodiments of this disclosure can include the following beneficial effects: By offsetting the pleated positioning parts along the two symmetrical long sides of the airbag, the pleats formed between the multiple first inflatable bulge areas near the first long side of the airbag and the pleats formed by the multiple first inflatable bulge areas near the second long side of the airbag are offset from each other in a direction parallel to the first wide side of the airbag. Therefore, when the airbag is inflated, the pleats formed on the airbag between the multiple first inflatable bulge areas will not form a through-flow between the first and second long sides of the airbag, i.e., no through-flow pleats will form in a direction parallel to the wide side of the airbag. In other words, the airbag of this embodiment cannot form vertically through-flow pleats on the airbag that are consistent with the blood flow direction of the upper arm, ensuring that the area where the second wrapping layer contacts the upper arm is an effective pressurized area, and pleats not in contact with the upper arm cannot provide flow space for blood. Therefore, the airbag of this embodiment can normally block blood flow to obtain a true and accurate blood pressure value.

[0015] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

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

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

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

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

[0020] Figure 4 This is a schematic diagram of the structure of an airbag in an inflated state, viewed from a 30° upward angle.

[0021] Figure 5 yes Figure 4 Sectional view of AA.

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

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

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

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

[0026] Figure 10 This is a schematic diagram of an airbag in an inflated state according to another exemplary embodiment.

[0027] Figure 11 This is a schematic diagram illustrating the arrangement of support sheets in an airbag according to another exemplary embodiment.

[0028] Figure 12 yes Figure 11 A top view showing the arrangement of the central support plates. Detailed Implementation

[0029] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0030] In related technologies, such as cuff-type blood pressure monitors, the bladder is a long, flat sheet when deflated. During blood pressure measurement, the sheet-like bladder is wrapped around the upper arm and secured in place using fasteners such as Velcro. This can be adjusted according to the thickness of the upper arm. When the bladder is inflated, its expansion applies pressure to the upper arm. During inflation, the outer side of the ring-shaped bladder expands outwards, and the inner side expands inwards. This causes multiple folds to form on the inner side of the bladder at uncertain locations. When these inner folds extend vertically along the inner side, forming a straight line along the wide side of the bladder, the area with these folds cannot contact the upper arm, preventing the corresponding blood vessels from being compressed and blood flow blocked. To compress and block blood flow to the blood vessels in the area of ​​the upper arm that is not in contact with the fold, the inflation pressure of the large airbag needs to be continuously increased. This increases the volume of the inflated areas on both sides of the fold, causing the fold to shrink and thus compressing and blocking the blood flow to the corresponding blood vessels. However, increasing the inflation pressure of the large airbag leads to an overall higher systolic and diastolic blood pressure reading during the deflation process, with the higher diastolic blood pressure being particularly noticeable.

[0031] To address the aforementioned technical problems, this disclosure provides an airbag and a blood pressure monitor. The airbag, through its pleated positioning portion, restricts the formation position of the inflated bulge areas, ensuring that the pleats appearing on the upper arm side of the inflated bulge areas are regularly distributed and cannot extend vertically, thereby effectively blocking blood flow.

[0032] Figure 1 This is a front view of an airbag 10 in an inflated state according to an exemplary embodiment. Figure 2 This is a schematic diagram of the structure of the first wrapping layer 1 of an airbag 10 according to an exemplary embodiment. Figure 3 This is a schematic diagram of the structure of the second wrapping layer 2 of an airbag 10 according to an exemplary embodiment. Figure 4 This is a schematic diagram of the structure of an airbag 10 in an inflated state, viewed from a 30° upward angle according to an exemplary embodiment.

[0033] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the airbag 10 includes a first covering layer 1, a second covering layer 2, a pleated positioning part 3, and a sensor 4. Figure 2 and Figure 3 As shown, both the first wrapping layer 1 and the second wrapping layer 2 are rectangular sheets of equal size. After stacking the first wrapping layer 1 and the second wrapping layer 2 with their long sides aligned and their wide sides aligned, the edges of the first wrapping layer 1 and the second wrapping layer 2 are sealed together 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 together. The airbag 10 is rectangular and has a symmetrical first long side 101 and second long side 102, as well as a symmetrical first wide side 103 and second wide side 104.

[0034] Multiple pleated positioning portions 3 are provided on the first long side 101 and the second long side 102 of the airbag 10. The multiple pleated positioning portions 3 located on the first long side 101 and the multiple pleated 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 pleated positioning portion 3 is parallel to both wide sides of the airbag 10. The pleated positioning portions 3 are used to limit the formation position of the first inflatable bulge area 61, thereby limiting the position of the pleats formed between two adjacent first inflatable bulge areas 61.

[0035] Figure 7 This is a rear view of an airbag 10 in an inflated state, according to an exemplary embodiment. Figure 8 This 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 pleated positioning parts 3. Here, two adjacent pleated positioning parts 3 refer to two adjacent pleated positioning parts 3 located on the same long side of the airbag 10. That is, 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, respectively. Furthermore, the multiple first inflation bulge areas 61 near the first long side 101 of the airbag 10 are offset from the multiple first inflation bulge areas 61 near the second long side 102 of the airbag 10 in a direction parallel to the first wide side 103 of the airbag 10. The folds formed between the plurality of first inflatable bulge areas 61 near the first long side 101 of the airbag 10 and the folds formed between the plurality of first inflatable bulge areas 61 near the second long side 102 of the airbag 10 are misaligned with each other in a direction parallel to the first wide side 103 of the airbag 10, and will not form a through connection between the first long side 101 and the second long side 102 of the airbag 10. Figure 5 yes Figure 4 Sectional view of AA. Figure 6 yes Figure 4 A cross-sectional view of the BB (British-White) section. (See example...) Figures 4 to 6 As shown, when the airbag 10 is inflated, the folds formed by the fold positioning part 3 between two adjacent first inflation bulge areas 61 will not penetrate through both ends of the airbag 10 in the longitudinal direction along the wide side of the airbag 10.

[0036] It should be noted here that, Figure 1 , Figure 4 , Figure 7 and Figure 8 In all cases, the airbag 10 is in the uninflated state of the upper arm. During blood pressure measurement, the uninflated airbag 10 is wrapped around the circumference of the upper arm, with the long side of the airbag 10 wrapped around the upper arm circumferentially. The second wrapping layer 2 is attached to the upper arm, allowing the sensor 4, located on the side of the second wrapping layer 2 facing the upper arm, to adhere to the upper arm and acquire the blood pressure value. The airbag 10 is then secured to the upper arm using a fixing component, which can be adjusted according to the thickness of the upper arm. The fixing component can be a Velcro or a snap fastener. Those skilled in the art can configure the fixing component according to the actual situation; this disclosure does not specifically limit the fixing component, for example, Velcro, snap fasteners, or zippers. Because the folds formed between the plurality of first inflatable bulge areas 61 near the first long side 101 of the airbag 10 and the folds formed between the plurality of first inflatable bulge areas 61 near the second long side 102 of the airbag 10 are misaligned in a direction parallel to the first wide side 103 of the airbag 10, the folds formed between the plurality of first inflatable bulge areas 61 on the airbag 10 in the inflated state will not form a through-flow between the first long side 101 and the second long side 102 of the airbag 10. In other words, the airbag 10 of this embodiment cannot form vertically penetrating folds on the second wrapping layer 2 that are aligned with the blood flow direction of the upper arm, ensuring that the area of ​​the second wrapping layer 2 in contact with the upper arm is an effective pressurization area, and that folds not in contact with the upper arm cannot provide flow space for blood. Therefore, the airbag 10 of this embodiment can normally block blood flow to obtain a true and accurate blood pressure value.

[0037] It should be noted that although the embodiments of this disclosure have been described above, the shape of the airbag 10 in the embodiments of this disclosure is not limited to a rectangle, and can be any elongated shape. In the elongated structure of the airbag 10, the two opposite sides in the length direction are respectively 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 elongated structure of the airbag 10 are respectively the first long side 101 and the second long side 102 of the airbag 10.

[0038] In some embodiments, the pleated positioning portion 3 is an indentation structure. For example... Figure 2 and Figure 3 As shown, the first wrapping layer 1 and the second wrapping layer 2 each have multiple preset positions 31. When the first wrapping layer 1 and the second wrapping layer 2 are stacked, each preset position 31 in the first wrapping layer 1 corresponds one-to-one with each preset position 31 in the second wrapping layer 2. The first wrapping layer 1 and the second wrapping layer 2 are then bonded together at the preset positions 31, so that the first wrapping layer 1 and the second wrapping layer 2 are connected at each preset position 31 to form an indentation structure.

[0039] By setting the pleated positioning part 3 with an indentation structure, the first wrapping layer 1 and the second wrapping layer 2 will not separate due to cavity expansion when the airbag 10 is inflated, and the first wrapping layer 1 and the second wrapping layer 2 can be separated between any two pleated positioning parts 3. Therefore, a first inflatable bulge area 61 can be formed between any two pleated positioning parts 3 when the airbag 10 is inflated.

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

[0041] In this embodiment, the pleated positioning portion 3 extends from the long side of the airbag 10 towards the center line 105 of the airbag 10. That is, one end of the indentation structure is located on the first long side 101 or the second long side 102 of the airbag 10, and the other end of the indentation structure extends towards the center line 105 of the airbag 10. The end of the indentation structure extending towards the center line 105 may have a first preset distance from the center line 105, or the endpoint of the extended end of the indentation structure may be located on the center line 105. Alternatively, one end of a portion of the indentation structure may be located on the first long side 101, and the endpoint of the other end may be located on the same straight line parallel to the first long side 101. Another portion of the indentation structure may have one end located on the second long side 102, and the endpoint of the other end may be located on the same straight line parallel to the second long side 102.

[0042] It should be noted that the indentation structure is located at one end of the first long side 101, and there may be a third preset distance between it and the first long side 101. Similarly, the indentation structure is located at one end of the second long side 102, and there may be a fourth preset distance between it and the second long side 102. That is to say, the connection between the first wrapping layer 1 and the second wrapping layer 2 and the indentation structure has a third preset distance or a fourth preset distance, so as to facilitate the fabrication of the indentation structure on the stacked first wrapping layer 1 and the second wrapping layer 2.

[0043] By setting an appropriate first preset distance, the length of the indentation structure in the direction perpendicular to the first long side 101 or the second long side 102 is controlled, so as to avoid the indentation structure being too long and causing the wrinkles between the first inflatable bulge areas 61 to continue to extend along the indentation structure, resulting in the wrinkles forming a through-flow between the first long side 101 and the second long side 102 of the airbag 10, or the indentation structure being too short and unable to limit the formation position of the first inflatable bulge area 61, resulting in the wrinkles between the first inflatable bulge areas 61 being generated at an uncertain position.

[0044] In some embodiments, the first preset distance is 0, meaning 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, multiple 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 ensures that any two first inflatable bulge areas 61 located on either side of the midline 105 are misaligned along the midline 105 through the indentation structure, preventing the formation of vertically continuous folds on the airbag 10 that align with the blood flow direction of the upper arm.

[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 on 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 but does not penetrate the midline 105. The indentation structure located on the first long side 101 and the indentation structure located on the second long side 102 have a second preset distance in the 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 on the two long sides in the direction perpendicular to the midline 105, the probability of wrinkles forming between any two first inflatable bulge areas 61 on both sides of the midline 105 is reduced. Alternatively, one end of the indentation structure may be located on the first long side 101 or the second long side 102 of the airbag 10, and the other end of the indentation structure may extend toward and through the center line 105 of the airbag 10, without extending to the opposite long side. By increasing the length of the indentation structure in the direction perpendicular to the center line 105, the limiting effect on the formation position of the first inflatable bulge area 61 is improved.

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

[0047] In this embodiment of the disclosure, the length direction of the elongated 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 pleated positioning part 3 is perpendicular to the first long side 101 or the second long side 102 of the airbag 10. For example... Figure 1 As shown, the plurality of pleated positioning portions 3 located on the first long side 101 of the airbag 10 are offset from the plurality of pleated positioning portions 3 located on the second long side 102 of the airbag 10 in a direction parallel to the first wide side 103 of the airbag 10. By setting the length direction of the pleated positioning portions 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 pleated positioning portions 3 located on different long sides of the airbag 10 will not coincide. This prevents the pleats formed between the plurality of first inflation bulge areas 61 near the first long side 101 of the airbag 10 from directly connecting with the pleats formed by the plurality of first inflation bulge areas 61 near the second long side 102 of the airbag 10, thus avoiding providing flow space for blood flow in the area created by the direct connection of the two pleats.

[0048] In some embodiments, the plurality of indentation structures corresponding to the plurality of pleated positioning portions 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 staggered in a direction perpendicular to the center line 105 of the airbag 10. There are multiple first row indentation structures arranged along the first long side 101 of the airbag 10, with one end of each first row indentation structure located on the first long side 101 of the airbag 10, and the other end of each first row indentation structure facing towards the center line 105 of the airbag 10 but not penetrating the center line 105. There are also multiple second row indentation structures arranged along and penetrating the center line 105 of the airbag 10, with one end of each second row indentation structure extending towards the first long side 101 of the airbag 10, and the other end of each second row indentation structure extending towards the second long side 102 of the airbag 10. Multiple third-row indentation structures are arranged along the second long side 102 of the airbag 10. One end of each third-row indentation structure is located on the second long side 102 of the airbag 10, and the other end of each third-row indentation structure faces the center line 105 of the airbag 10 but does not penetrate the center line 105. When the airbag 10 is inflated, multiple first-inflation bulge areas 61 are formed between the multiple first-row indentation structures, multiple first-inflation bulge areas 61 are formed between the multiple second-row indentation structures, and multiple first-inflation bulge areas 61 are formed between the multiple third-row indentation structures. That is to say, three rows of first-inflation bulge areas 61 are formed when the airbag 10 is inflated, making the pressure applied to the upper arm by the second wrapping layer 2 more uniform.

[0049] In this embodiment of the present disclosure, 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 no wrinkles are 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, which facilitates the formation of an inflatable bulge area and has a certain degree of wrinkle resistance.

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

[0052] In some embodiments, the support sheet 7 is disposed on the 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, which is convenient for processing and preparation.

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

[0054] In some embodiments, support pieces 7 are provided at symmetrical positions of the sensors 4. That is, each sensor 4 is positioned with a corresponding support piece 7, wherein the sensors 4 and their corresponding support pieces 7 are located on opposite sides of the second wrapping layer 2, with the sensors 4 located on the side of the second wrapping layer 2 facing the upper arm when the airbag 10 wraps around the upper arm. The support pieces 7 are located on the side of the second wrapping layer 2 facing the cavity.

[0055] In some embodiments, the support piece 7 corresponding to the sensor 4 has a curved structure to avoid the sensor 4, so as to prevent the support piece 7 with a certain degree of rigidity from supporting the sensor 4 and affecting the measurement accuracy of the sensor 4.

[0056] For example, the middle part of the support piece 7 corresponding to the sensor 4 is Ω-shaped, which is used to avoid the sensor 4.

[0057] Figure 9 This is a schematic diagram of the structure of an airbag 10 in an uninflated state according to another exemplary embodiment. Figure 10 This is a schematic diagram of the structure of an airbag 10 in an inflated state according to another exemplary embodiment. Figure 9 and Figure 10 The airbag 10 shown is positioned to wrap around the upper arm, and in this state, the airbag 10 has a ring-shaped structure. For example... Figure 9 and Figure 10 As shown, in another embodiment of this disclosure, the support piece 7 is elongated, and multiple support pieces 7 are arranged parallel to each other and staggered on the second wrapping layer 2. That is, the length direction of the multiple support pieces 7 is the same as the circumferential direction of the annular second wrapping layer 2, and they are located in different circumferential directions of the second wrapping layer 2. Furthermore, the support pieces 7 and the adjacent pleated positioning parts 3 are staggered in the axial direction of the annular second wrapping layer 2, so that the pleated positioning parts 3 and the support pieces 7 do not interfere with each other when the airbag 10 is inflated.

[0058] In another embodiment of this disclosure, multiple support pieces 7 are respectively located between any two adjacent pleated positioning portions 3. When the airbag 10 is inflated, the two adjacent pleated positioning portions 3 and the support pieces 7 located between these two pleated positioning portions 3 form a second inflatable bulge area 62. It can be understood that, due to the addition of support pieces 7, the number of second inflatable bulge areas 62 will be greater than that of first inflatable bulge areas 61. Some first inflatable bulge areas 61 and second inflatable bulge areas 62 are formed in roughly the same position and can be regarded as the same bulge area. However, due to the addition of support pieces 7, some first inflatable bulge areas 61 will change from an independent first inflatable bulge area 61 that runs through the width of the airbag 10 into two second inflatable bulge areas 62 that are staggered along the center line.

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

[0060] Figure 11 This is a schematic diagram illustrating the arrangement of support pieces 7 in an airbag 10 according to another exemplary embodiment. In some embodiments, such as Figure 11 As shown, the support sheet 7 includes three rows of support sheets 7, which are respectively referred to as the first row of support sheets 71, the second row of support sheets 72 and the third row of support sheets 73.

[0061] The first row of support pieces 71 is positioned above the center line 105 of the second wrapping layer 2, meaning the first row of support pieces 71 is located between the center line 105 of the airbag 10 and the first long side 101 of the airbag 10. The second row of support pieces 72 is symmetrically positioned to mate with the sensor 4. The third row of support pieces 73 is positioned below the center line 105 of the second wrapping layer 2, meaning the third row of support pieces 73 is located between the center line 105 of the airbag 10 and the second long side 102 of the airbag 10. In other words, the first row of support pieces 71 is positioned close to the first long side 101 of the airbag 10, the second row of support pieces 72 is positioned close to the center of the airbag 10, and the third row of support pieces 73 is positioned close to the second long side 102 of the airbag 10.

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

[0063] In some embodiments, among the plurality of second inflatable bulge areas 62 formed by the pleated positioning part 3 and the support piece 7, some of the second inflatable bulge areas 62 are symmetrically and staggeredly distributed along the midline 105 of the airbag 10, and pleats are formed between two adjacent second inflatable bulge areas 62. Any two pleats cannot be connected in a direction parallel to the wide side of the airbag 10, that is, in a direction perpendicular to the first long side 101 or the second long side 102 of the airbag 10. This ensures that the area where the second wrapping layer 2 contacts the upper arm is an effective pressurized area, and pleats that do not contact the upper arm cannot provide flow space for blood flow.

[0064] In the embodiments disclosed herein, such as Figure 1 and Figure 10 As shown, the airbag 10 also includes an air inlet 5, which is connected to the cavity to form an air passage for inflating and deflating the airbag 10.

[0065] In some embodiments, the air vent 5 is disposed in the first wrapping layer 1, so that when the airbag 10 is wrapped around the upper arm, the air vent 5 faces outward to facilitate the inflation and deflation of the airbag 10.

[0066] In some embodiments, there are multiple air vents 5. The multiple air vents 5 are equally spaced in the first wrapping layer 1 and are arranged along the first long side 101 or the second long side 102 of the airbag 10 to make the expansion of the first inflation bulge area 61 or the second inflation bulge area 62 more uniform during the inflation of the airbag 10, thereby avoiding excessive deformation of the second wrapping layer 2 and insufficient pressure on the upper arm.

[0067] In some embodiments, the air vent 5 is matched with the support piece 7. When the airbag 10 is inflated, two adjacent pleated positioning parts 3 and one adjacent support piece 7 form a second inflatable bulge area 62 in the cavity. By correspondingly setting the air vent 5 with the support piece 7, when the cavity is inflated, each air vent 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 this embodiment, the airbag 10 is made of two rectangular flexible sheets by hot pressing. The two flexible sheets are used to prepare the first wrapping layer 1 and the second wrapping layer 2, respectively. The long sides of the two flexible sheets are stacked together, and the wide sides are stacked together. The edges of the two flexible sheets are hot-pressed to seal the two flexible sheets together, forming an airbag 10 with a cavity.

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

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

[0071] Based on the same inventive concept, this disclosure also provides a blood pressure monitor, including the airbag 10 involved in any of the above embodiments.

[0072] This embodiment of the blood pressure monitor is used for blood pressure measurement. An uninflated air bladder 10 is wrapped around the periphery of the upper arm, i.e., the long side of the air bladder 10 is wrapped around the upper arm circumferentially. A second wrapping layer 2 is attached to the upper arm, allowing a sensor 4 disposed on the side of the second wrapping layer 2 facing the upper arm to be attached to the upper arm and acquire blood pressure values. The air bladder 10 is then fixed to the upper arm by a fixing component, which can be adjusted appropriately according to the thickness of the upper arm. Because the folds formed between the plurality of first inflatable bulge areas 61 near the first long side 101 of the air bladder 10 and the folds formed between the plurality of first inflatable bulge areas 61 near the second long side 102 of the air bladder 10 are misaligned in a direction parallel to the first wide side 103 of the air bladder 10, when the air bladder 10 is inflated, the folds formed between the plurality of first inflatable bulge areas 61 in the second wrapping layer 2 will not form a through-flow between the first long side 101 and the second long side 102 of the air bladder 10. Ensure that the area where the second wrapping layer 2 contacts the upper arm is an effective pressure zone; any folds not in contact with the upper arm cannot provide space for blood flow. At this point, the sensor 4 can obtain a true and accurate blood pressure value.

[0073] It is understood that in this disclosure, "multiple" refers to two or more, and other quantifiers are similar. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. The singular forms "a," "the," and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

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

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

[0076] It can be further understood that, unless otherwise specified, "connection" includes both direct connections where no other components exist between the two parties and indirect connections where other components exist between them.

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

[0078] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the utility models disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

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

Claims

1. An airbag for measuring blood pressure, characterized in that, include: First wrapping layer, second wrapping layer, pleated positioning part and sensor; The first and second wrapping layers seal to form the airbag with a cavity. When the airbag is not inflated, the first and second wrapping layers are in contact with each other. The pleated positioning parts are respectively staggered along the two symmetrical long sides of the airbag. When the airbag is inflated to cover the upper arm, the cavity forms a plurality of staggered first inflation bulge areas along the 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 the direction parallel to the wide side of the airbag, and any two pleats cannot be connected in the direction parallel to the wide side of the airbag. The sensor is positioned on one side of the second wrapping layer of the upper arm when the airbag wraps around the upper arm.

2. The airbag according to claim 1, characterized in that, The pleated positioning part is an indentation structure, which is formed by the first wrapping layer and the second wrapping layer being bonded together at a preset position.

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

4. The airbag according to claim 2, characterized in that, The indentation structure is elongated, with the length of the elongated strip perpendicular to the long side of the airbag.

5. The airbag according to any one of claims 1-4, characterized in that, The airbag also includes a support piece disposed on the side of the second wrapping layer facing and / or away from the cavity.

6. The airbag according to claim 5, characterized in that, There are multiple support pieces, which are arranged in parallel and staggered positions on the second wrapping layer, and are also staggered from the adjacent pleated positioning parts.

7. The airbag according to claim 5, characterized in that, When the airbag inflates around the upper arm, two adjacent pleated positioning parts and one adjacent support piece form a second inflation bulge area in the cavity. Part of the second inflation bulge area is symmetrically and staggered along the midline of the airbag, and pleats are formed between two adjacent second inflation bulge areas. Any two pleats 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 the two symmetrical long sides of the airbag.

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

10. A blood pressure monitor, characterized in that, Includes the airbag as described in any one of claims 1-9.

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