Sphygmomanometer

Abstract

The invention relates to the technical field of sphygmomanometers, and discloses a sphygmomanometer which comprises a supporting assembly, an arm cylinder and an air bag, the arm cylinder is provided with a first end, a second end, a first fixing position and a second fixing position in the length direction after being unfolded, the first fixing position and the second fixing position are located between the first end and the second end, and the arm cylinder is connected with the supporting assembly at the first fixing position. The air bag is installed on the inner side of the arm cylinder and extends to the second fixing position from the first end through the first fixing position. Wherein the arm cylinder can be tightened, the air bag at least corresponds to a first part between the first end and the first fixing position and is used for pressing an artery of a first limb of a user, and the air bag at least corresponds to a second part between the first fixing position and the second fixing position and is used for pressing an artery of a second limb of the user. The first portion and the second portion are at least partially non-overlapping. According to the sphygmomanometer, the user is allowed to use the first limb to measure the blood pressure, and the user is allowed to use the second limb to measure the blood pressure, so that different measurement requirements of different users are met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sphygmomanometer, in particular to a sphygmomanometer. BACKGROUND

[0002] In order to realize fast blood pressure measurement, a tunnel type sphygmomanometer is often used instead of a traditional cuff type sphygmomanometer in a clinic with large amount of people or a physical examination center. The tunnel type sphygmomanometer is provided with an arm cylinder instead of a cuff. The arm cylinder is a winding drum structure formed by winding a belt (such as a long plastic sheet). An inner wall of the arm cylinder is provided with an air bag for measuring blood pressure. An arm of a measurer is inserted into the arm cylinder. The arm cylinder is automatically contracted until the arm is tightly bound, and a medical staff does not need to help bind the cuff. SUMMARY

[0003] The present application provides a sphygmomanometer. The sphygmomanometer comprises a support assembly, an arm cylinder and an air bag. The arm cylinder has a first end and a second end in a length direction after being unfolded. A first fixing position and a second fixing position are located between the first end and the second end. The first end is located at an inner side of the arm cylinder, and the second end is located at an outer side of the arm cylinder. The arm cylinder is connected to the support assembly at the first fixing position. The air bag is installed at the inner side of the arm cylinder and extends from the first end to the second fixing position through the first fixing position. The arm cylinder can be tightened. A first part of the air bag corresponding to a region between the first end and the first fixing position is used to compress an artery of a first limb of a user. A second part of the air bag corresponding to a region between the first fixing position and the second fixing position is used to compress an artery of a second limb of the user. The first part and the second part at least partially do not overlap.

[0004] Compared with the prior art, the sphygmomanometer provided by the present application allows a user to measure blood pressure by using a first limb (for example, a right arm) and a second limb (for example, a left arm), so as to meet different measurement requirements of different users, for example, breaking the shackles of measuring blood pressure by using a left arm to meet the use requirements of disabled persons, and for example, reflecting the health condition of a user more comprehensively by using an inter-arm blood pressure difference IAD and / or an ankle-brachial index ABI. BRIEF DESCRIPTION OF DRAWINGS

[0005] Figure 1 is a structural schematic diagram of a sphygmomanometer provided by an embodiment of the present application; Figure 2 is a structural schematic diagram of a sphygmomanometer provided by an embodiment of the present application; Figure 3 is a structural schematic diagram of a sphygmomanometer provided by an embodiment of the present application; Figure 4 is a structural schematic diagram of a sphygmomanometer provided by an embodiment of the present application; Figure 5is a structural schematic view of a sphygmomanometer provided by an embodiment of the present application; Figure 6 is Figure 5 is a partial enlarged view of position A in FIG. 1; Figure 7 is a partial structural schematic view of a sphygmomanometer provided by an embodiment of the present application, in which a sliding block is separated from a ring-shaped guide rail; Figure 8 is a partial structural schematic view of a sphygmomanometer provided by an embodiment of the present application, in which a traction assembly and a transmission assembly are separated; Figure 9 is a structural schematic view of a sphygmomanometer provided by an embodiment of the present application; Figure 10 is Figure 9 is a partial enlarged view of position B in FIG. 2; Figure 11 is a structural schematic view of a sphygmomanometer provided by an embodiment of the present application; Figure 12 is Figure 11 is a partial enlarged view of position C in FIG. 3; Figure 13 is a structural schematic view of a sphygmomanometer provided by an embodiment of the present application; Figure 14 is a structural schematic view of a sphygmomanometer provided by an embodiment of the present application; Figure 15 is Figure 14 is a partial enlarged view of position D in FIG. 4; Figure 16 is a structural schematic view of a sphygmomanometer provided by an embodiment of the present application, in which a traction member, an air bag, an arm cylinder and a separation member are separated; Figure 17 is a structural schematic view of a sphygmomanometer provided by an embodiment of the present application, in which a traction member, an air bag, an arm cylinder and a separation member are separated; Figure 18 is Figure 17 is a partial enlarged view of position E in FIG. 5; Figure 19 is a structural schematic view of a sphygmomanometer provided by an embodiment of the present application, in which a sensor assembly and an arm cylinder are expanded; Figure 20 is a structural schematic view of a sphygmomanometer provided by an embodiment of the present application, in which a sensor assembly and an arm cylinder are expanded; Figure 21 is a sectional view of a sphygmomanometer provided by an embodiment of the present application, in which a sensor assembly and an arm cylinder are expanded; Figure 22 is a structural schematic view of a sphygmomanometer provided by an embodiment of the present application.

[0006] Explanation of reference signs: Arm barrel 1;First end 1a;Second end 1b;First fixed position 1c;Second fixed position 1d; Traction assembly 2;Traction 21;Adapter block 22;Fixed part 221;Guide part 222;First screw 223;Second screw 224;Annular support 23;Column 24;Annular guide rail 25;Annular bottom plate 251;First annular side plate 252;First sliding groove 252a;Second annular side plate 253;Limiting block 254;Positioning pin 255;Buckle 256;Sliding block 26;Main body part 261;Second sliding groove 261a;Protrusion 262;Support barrel 27;Third sliding groove 27a;Guide inclined surface 27b;Limiting ring 28;Reinforcing member 29;Strengthening bottom plate 291;First side plate 292;Second side plate 293; Transmission assembly 3;Driven part 31;Second rotating shaft 311;Second gear 312;Fourth rotating shaft 313;Fourth gear 314;Driving part 32;First rotating shaft 321;First gear 322;Third rotating shaft 323;Third gear 324;Speed measuring part 33;Distance measuring part 34; Motor 4; Support assembly 5;Base 51;Support plate 52;Support bottom plate 521;Support side plate 522;First limiting shaft 53;Second limiting shaft 54; Air bag 6; Isolating part 7;First isolating part 71;Second isolating part 72;Inclined surface 72a; Sensor assembly 8;First sensor 81;Second sensor 82;Microphone 83;First auscultation head 84;Second auscultation head 85. DETAILED DESCRIPTION

[0007] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and should not be used to limit the present application.

[0008] The terms "first", "second", "third", etc. are used only for descriptive purposes and are not to be construed as indicating or implying relative importance or a specific number of the technical features indicated. Thus, features defined with "first", "second", "third" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly and specifically limited. All directional indications (such as upper, lower, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between the components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but can optionally include steps or units not listed, or can optionally include other steps or units inherent to the process, method, product or device.

[0009] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent or alternative embodiments to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0010] Please refer to Figure 1 and Figure 2 , the sphygmomanometer comprises an arm circumference adjusting device, the arm circumference adjusting device comprises an arm sleeve 1, a traction assembly 2 and a transmission assembly 3, the arm sleeve 1 has a first end 1a and a second end 1b in the length direction after being unfolded (for example Figure 19 or 20), the traction assembly 2 comprises a traction member 21, the traction member 21 is wrapped around the outside of the arm sleeve 1 and connected with the arm sleeve 1, the transmission assembly 3 comprises two driven members 31, one end of the traction member 21 is connected with one of the driven members 31, the other end of the traction member 21 is connected with the other driven member 31, at least one of the two driven members 31 can be driven to wind up one end of the traction member 21, the other end of the traction member 21 is released synchronously, so that the traction member 21 moves around the arm sleeve 1, the arm sleeve 1 tightens or expands following the movement of the traction member 21, which is high in efficiency and compact and reliable in structure.

[0011] In some embodiments, the arm circumference adjusting device can be used as a component of the sphygmomanometer. Accordingly, the inner side of the arm sleeve 1 can be provided with the air bag 6.

[0012] In some other embodiments, the arm sleeve 1 can be used as a tourniquet or other components that need to compress blood vessels.

[0013] The working principle is as follows: taking the application of the arm circumference adjusting device to a sphygmomanometer as an example, the user inserts the limb into the arm cylinder 1, and after the part to be measured blood pressure is in place, the user can press the button on the sphygmomanometer to allow at least one driven member 31 to move, which starts to wind one end of the traction member 21 connected thereto, and the other end of the traction member 21 is synchronously released, so that the traction member 21 moves along the circumferential direction of the arm cylinder 1, and the traction member 21 moves the second end 1b of the arm cylinder 1 connected thereto relative to the first end 1a, and the arm cylinder 1 is tightened, and the air bag inside the arm cylinder 1 is inflated to compress the blood vessels to measure the blood pressure; or after the blood pressure measurement is completed, the arm cylinder 1 is expanded to allow the user to withdraw the limb from the arm cylinder 1.

[0014] In order to drive the driven member 31 to rotate, a motor 4 is needed to drive the driven member 31 to rotate, and it should be understood that the number of motors 4 can be one, two or other numbers according to specific design requirements. Figure 1 、 2 When the motor 4 is one, one motor 4 drives two driven members 31 to rotate at the same time, specifically, the arm circumference adjusting device includes one motor 4, and the transmission assembly 3 further includes a driving member 32 connected with the motor 4, the motor 4 is configured to drive the driving member 32 to rotate, and the driving member 32 drives the two driven members 31 to rotate in opposite directions. In another embodiment, the arm circumference adjusting device includes two motors 4, one motor 4 is connected with one driven member 31, and the other motor 4 is connected with the other driven member 31. When the arm circumference needs to be adjusted, there are two modes, mode one, one motor 4 works while the other does not work, mode two, one motor 4 works while the other also works and rotates in the opposite direction.

[0015] It should be understood that the driving member 32 and the driven member 31 can be a gear transmission structure, a chain wheel transmission structure, a belt wheel transmission structure, etc. Specifically, as shown in Figure 1 and Figure 2 The driving member 32 includes a first rotating shaft 321 and a first gear 322 connected with the first rotating shaft 321, the motor 4 is connected with the first rotating shaft 321, the driven member 31 includes a second rotating shaft 311 and a second gear 312 connected with the second rotating shaft 311, the second rotating shaft 311 and the first rotating shaft 321 are arranged in parallel, and the second gear 312 is engaged with the first gear 322 to transmit the driving force of the motor 4 to the driven member 31. Among them, a speed reducer can also be arranged between the motor 4 and the driving member 32.

[0016] As shown in Figure 6As shown, the transmission assembly 3 further comprises a speed measuring element 33 and a distance measuring element 34. The speed measuring element 33 is connected to the base 51 and is configured to monitor the number of rotations of the driven element 31. The distance measuring element 34 is connected to the base 51 and is configured to measure the position of the adapter block 22 in the circumferential direction of the arm barrel 1.

[0017] It should be understood that the speed measuring element 33 can be an optical encoder or a Hall sensor, which directly or indirectly monitors the number of rotations or the angle of the driven element 31 in the transmission assembly 3. Since the length of the traction element 21 is strictly proportional to the number of rotations of the driven element 31, monitoring the number of rotations is equivalent to indirectly measuring the displacement of the traction element 21. The distance measuring element 34 can be an ultrasonic distance measuring sensor, a laser distance measuring sensor, or a linear potentiometer, which directly measures the absolute position of the adapter block 22 in the circumferential direction of the arm barrel 1, which provides a position reference.

[0018] In some embodiments, as shown in FIG. 1, Figure 1 As shown, the traction element 21 is provided in a strip shape, and the second shaft 311 of each driven element 31 is provided with a second gear 312. One end of the traction element 21 is connected to the second shaft 311 of one driven element 31 and located between the two second gears 312 of the same driven element 31. The other end of the traction element 21 is connected to the second shaft 311 of another driven element 31 and located between the two second gears 312 of the same driven element 31. The strip shape can refer to the ratio between the width of the traction element 21 and the width of the arm barrel 1 being ≥1 / 4, such as a rectangular cross-section nylon belt, cloth belt, etc. Of course, other sizes and shapes are also possible without exceeding the general knowledge of those skilled in the art. By providing a strip-shaped traction element and locating it near the middle of the arm barrel 1, the traction force is evenly applied to the circumference of the arm barrel 1, which helps to avoid uneven stress or twisting of the arm barrel 1.

[0019] In some embodiments, the traction element 21 is provided in a rope shape, and the second shaft 311 of each driven element 31 is provided with a second gear 312. One end of the traction element 21 is connected to the second shaft 311 of one driven element 31, and the other end of the traction element 21 is connected to the second shaft 311 of another driven element 31. In the axial direction of the driven element 31, a traction element 21 is provided on both sides of the second gear 312. The rope shape can refer to the ratio between the width of the traction element 21 and the width of the arm barrel 1 being <1 / 4, such as a circular cross-section steel wire rope, nylon rope, etc. Of course, other sizes and shapes are also possible without exceeding the general knowledge of those skilled in the art. By providing two traction ropes and locating them near the ends of the arm barrel 1, the traction force is evenly applied to the circumference of the arm barrel 1, which helps to avoid uneven stress or twisting of the arm barrel 1.

[0020] In some embodiments, as shown in FIG. 1, Figure 4 , 5As shown in Figures 6 and 8, the driving member 32 includes a third rotating shaft 323 and a third gear 324 connected to the third rotating shaft 323. The motor 4 is connected to the third rotating shaft 323. The driven member 31 includes a fourth rotating shaft 313 and a fourth gear 314 connected to the fourth rotating shaft 313. The fourth rotating shaft 313 and the third rotating shaft 323 are arranged in parallel, and the fourth gear 314 meshes with the third gear 324. The traction member 21 is arranged in a rope shape and there are two of them. There are two fourth rotating shafts 313 and two fourth gears 314. The four fourth rotating shafts 313 are spaced apart around the third rotating shaft 323, and the four fourth gears 314 are spaced apart around the third gear 324. One end of each of the two traction members 21 is connected to one of the two fourth rotating shafts 313 of one driven member 31, and the other end of each of the two traction members 21 is connected to one of the two fourth rotating shafts 313 of another driven member 31. By setting two traction ropes and placing them in the area near both ends of the boom 1, the traction force is applied evenly around the circumference of the boom 1, which helps to avoid uneven force distribution or twisting of the boom 1.

[0021] It should be understood that the number of rope-like traction components 21 can be one, two, three, or other quantities depending on specific design requirements.

[0022] To achieve the connection between the traction component 21 and the second end 1b of the boom 1, as follows: Figure 2 , 7 and Figure 12 As shown, the traction assembly 2 also includes an adapter block 22, which fixes the boom cylinder 1 to the traction member 21 at the second end 1b; in embodiments that also include an isolator 7, as... Figure 11 and Figure 12 As shown, the adapter block 22 fixes the arm cylinder 1 and the isolator 7 together to the traction member 21 at its second end 1b. The direction in which the user's limb extends into the arm cylinder 1 is defined as the reference direction. The first dimension of the traction member 21 in the reference direction is smaller than the second dimension of the arm cylinder 1 in the reference direction, and the third dimension of the adapter block 22 in the reference direction is between the first and second dimensions. For ease of understanding, if the arm cylinder 1 is simply considered as a hollow cylindrical structure, then the aforementioned reference direction can be simply considered as the axis of the cylindrical structure, which will not be elaborated further below.

[0023] It should be understood that the traction member 21 can be configured as either a rope or a strip. When the traction member 21 is configured as a rope, its dimension in the reference direction can be the wire diameter; when the traction member 21 is configured as a strip, its dimension in the reference direction can be the width.

[0024] The third dimension of the adapter block 22 is designed to be between the first dimension of the traction member 21 and the second dimension of the arm sleeve 1, so as to realize the connection of the arm sleeve 1 and the traction member 21 with a large width difference, and the force is effectively transmitted from the traction member 21 to the adapter block 22, and then uniformly dispersed to the entire connecting surface of the arm sleeve 1, so as to realize reliable connection.

[0025] In order to realize the connection of the adapter block, the arm sleeve 1, the isolation member 7 and the traction member 21, as shown in Figure 11 , Figure 12 , Figure 14 , the adapter block 22 comprises an integral fixed part 221 and a guide part 222, the thickness of the fixed part 221 is less than the thickness of the guide part 222, the arm sleeve 1 and the isolation member 7 are installed on the fixed part 221, the arm sleeve 1 is flush with the guide part 222, and the fixed part 221 is further installed on the traction member 21. When the traction member 21 drives the adapter block 22, the arm sleeve 1 and the isolation member 7 to move, the guide part 222 can shield the end of the arm sleeve 1 and the isolation member 7, and can guide the movement of the arm sleeve 1 and the isolation member 7. Preferably, as shown in Figure 12 and Figure 14 , the end of the guide part 222 can be arc-shaped.

[0026] It should be understood that the adapter block 22, the arm sleeve 1 and the isolation member 7 can be connected by bonding or bolting, and specifically, as shown in Figure 11 , Figure 12 , the adapter block 22 further comprises a first screw 223 and a second screw 224, the threaded end of the first screw 223 passes through the arm sleeve 1 and the isolation member 7, and is threadedly connected with the fixed part 221 and / or a nut, and the threaded end of the second screw 224 passes through the traction member 21, the arm sleeve 1 and the isolation member 7, and is threadedly connected with the fixed part 221 and / or a nut.

[0027] As shown in Figures 1 to 6 , the arm circumference adjusting device comprises a support assembly 5, the support assembly 5 comprises a base 51, the first end 1a of the arm sleeve 1 is connected with the base 51, the second end 1b of the arm sleeve 1 is connected with the traction member 21, and the transmission assembly 3 is installed on the base 51. Of course, in other embodiments, the first end 1a of the arm sleeve 1 can also be connected with the output end of another motor (or the transmission assembly thereof), as long as the second end 1b and the first end 1a of the arm sleeve 1 can produce relative movement, so as to tighten or expand.

[0028] The base 51 provides a fixed point for the first end 1a of the arm sleeve 1, and the transmission assembly 3 is also fixed to the base 51, thereby providing support for the arm sleeve 1 and the base 51, so that the structure is more compact.

[0029] It should be understood that the first rotating shaft 321, the second rotating shaft 311, the third rotating shaft 323, and the fourth rotating shaft 313 can be directly rotatably connected to the base 51, or can be indirectly rotatably connected to the base 51 through other connecting plates and connecting blocks. Among them, in order to facilitate the display of the first rotating shaft 321, the second rotating shaft 311, the third rotating shaft 323, the fourth rotating shaft 313 and their relative positions, the cover connected with the base 51 is removed, which does not imply that the present application does not have it.

[0030] As shown in Figure 3 The support assembly 5 includes a first limiting shaft 53 and a second limiting shaft 54 connected with the base 51. The first limiting shaft 53 and the second limiting shaft 54 are arranged along the circumference of the arm cylinder 1. The first end 1a of the arm cylinder 1 is connected with the first limiting shaft 53, and the second end 1b of the arm cylinder 1 sequentially passes through the gap between the second limiting shaft 54 and the base 51 and the gap between the first limiting shaft 53 and the base 51. In this way, the arm cylinder 1 can be limited and guided. Of course, one or more limiting shafts can be additionally arranged between the first limiting shaft 53 and the second limiting shaft 54, and they are arranged along the circumference of the arm cylinder 1.

[0031] In another embodiment, the support assembly 5 can only include the first limiting shaft 53 connected with the base 51, that is, without the second limiting shaft 54. The first end 1a of the arm cylinder 1 is connected with the first limiting shaft 53, and the second end 1b of the arm cylinder 1 sequentially passes through the gap between the first limiting shaft 53 and the base 51.

[0032] In yet another embodiment, the support assembly 5 can only include the second limiting shaft 54 connected with the base 51, that is, without the first limiting shaft 53. The first end 1a of the arm cylinder 1 is connected with the base 51, and there is a gap between the first end 1a of the arm cylinder 1 and the base 51. The second end 1b of the arm cylinder 1 sequentially passes through the gap between the second limiting shaft 54 and the base 51 and the gap between the first end 1a of the arm cylinder 1 and the base 51.

[0033] Further, the first limiting shaft 53 can be rotatable relative to the base 51 to allow the first end 1a of the arm cylinder 1 to have a certain degree of freedom, which is beneficial to increase the adaptability of the arm circumference adjusting device to different users. The second limiting shaft 54 can be rotatable relative to the base 51 to allow the arm cylinder 1 to have rolling friction with the second limiting shaft 54, which is beneficial to reduce the movement resistance and wear.

[0034] As shown in Figure 13 and Figure 16 The arm circumference adjusting device includes a support assembly 5. The support assembly 5 includes a base 51 and a support plate 52. The support plate 52 includes a support bottom plate 521 and a support side plate 522 which are integrally connected. The support side plate 522 is connected with the base 51. The arm cylinder 1 is connected with the support bottom plate 521 at the first fixed position 1c and together with the isolation piece 7 (for example, along the direction of the arrow A1 in FIG. 1).Figure 16 The air bag 6 is installed on the support bottom plate 521, and the first limiting shaft 53 and the second limiting shaft 54 can be connected with the support side plate 522, and the second end 1b of the arm barrel 1 sequentially passes through the gap between the second limiting shaft 54 and the base 51 and the gap between the first limiting shaft 53 and the base 51. Further, the first end 1a of the arm barrel 1 can be in a free state, for example, bending to the center of the arm barrel 1.

[0035] As shown in Figures 1 to 3 , the bending and rebounding capability of the arm barrel 1 can be greater than that of the traction member 21, allowing the arm barrel 1 to support the traction member 21, so that the traction member 21 can be directly sleeved on the arm barrel 1. In this way, the structure of the device is simplified, and the number of parts and manufacturing cost are reduced.

[0036] As shown in Figure 22 , the direction in which the user's limb extends into the arm barrel 1 is defined as a reference direction, and the traction assembly 2 further comprises an annular support 23 and a column 24 connected with the annular support 23, the annular support 23 is spaced apart in the reference direction Two, a plurality of columns 24 are spaced apart and supported between the two annular supports 23, and are located on the inner side of the traction member 21, so as to allow the column 24 to support the traction member 21. In this way, first, the design of the arm barrel 1 and the traction member 21 is more flexible, for example, it is not necessary to satisfy the condition that the bending and rebounding capability of the arm barrel 1 is greater than that of the traction member 21, and second, the traction member 21 and the arm barrel 1 are separated, which is beneficial to reduce the wear between the two.

[0037] It should be understood that the column 24 is rotatable relative to the annular support 23, and the traction member 21 and the column 24 are in rolling friction, which can reduce the friction between the column 24 and the traction member 21. Of course, the column 24 and the annular support 23 can be fixedly connected, and at this time the friction between the column 24 and the traction member 21 is sliding friction. Further, the traction member 21 can be provided in a strip shape or a rope shape. When the traction member 21 is in a rope shape, two rope-shaped traction members 21 are provided, and the two rope-shaped traction members 21 are spaced apart along the reference direction.

[0038] As shown in Figure 6 and Figure 7 , the traction assembly 2 comprises an annular guide rail 25 and a sliding block 26 connected with the annular guide rail 25, the annular guide rail 25 is wrapped on the outer side of the arm barrel 1, and the traction member 21 is connected with the arm barrel 1 through the sliding block 26, and in the process of the traction member 21 moving around the arm barrel 1, the sliding block 26 moves along the annular guide rail 25.

[0039] In some embodiments, the orthogonal projection of the annular guide rail 25 on the arm barrel 1 and the orthogonal projection of the traction member 21 on the arm barrel 1 overlap, so as to allow the annular guide rail 25 to support the traction member 21.

[0040] In other embodiments, the orthographic projection of the annular guide rail 25 onto the boom 1 and the orthographic projection of the traction member 21 onto the boom 1 are staggered. The traction member 21 can be configured as a strip to increase the contact area between the traction member 21 and the boom 1. Of course, even if the traction member 21 is supported by the boom 1, it can be supported by a support column (e.g., Figure 22 The column 24 in the middle supports the traction component 21.

[0041] As an example, such as Figure 4 , Figure 5 and Figure 8 As shown, the direction in which the user's limb extends into the arm tube 1 is defined as the reference direction. Two annular guide rails 25 are arranged at intervals along the reference direction. The traction member 21 is arranged in the shape of a rope and there are two of them. One traction member 21 is supported by one annular guide rail 25, and the other traction member 21 is supported by another annular guide rail 25.

[0042] By setting two traction components 21, the two spaced traction components 21 can effectively balance the eccentric torque that may be generated during the sliding of the slider 26, thus effectively preventing axial twisting or deformation of the boom 1 during tightening. Furthermore, by distributing the total traction force to two traction ropes and two sets of guide rails, the required strength of each rope-like traction component 21 can be reduced, and its diameter can be made thinner; the dimensions of each guide rail and slider 26 can also be reduced accordingly. This facilitates a more compact and lightweight structure.

[0043] It should be understood that in another embodiment, an annular guide rail 25 may also be provided, and the traction member 21 may be configured as a strip, which can also be supported and guided by the annular guide rail 25.

[0044] like Figure 6 and Figure 7 As shown, the annular guide rail 25 includes an annular base plate 251 and a first annular side plate 252 connected to the annular base plate 251. The first annular side plate 252 has a first groove 252a. The slider 26 includes a main body 261 and two protrusions 262 connected to the main body 261. The main body 261 is supported between the two first annular side plates 252. One protrusion 262 extends into the first groove 252a of one first annular side plate 252, and the other protrusion 262 extends into the first groove 252a of the other first annular side plate 252. The traction member 21 is connected to the arm cylinder 1 through the main body 261 and is supported by the annular base plate 251. It should be understood that the main body 261 can be directly connected to the traction member 21, or it can be connected to the traction member 21 via the adapter block 22.

[0045] The protrusion 262 is slidingly fitted into the first sliding groove 252a of the first annular side plate 252, achieving the sliding connection of the slider 26 with the annular track and the slider 26. The sliding groove provides a precise circumferential movement path for the slider 26, ensuring smooth movement of the traction member 21 without shaking. The protrusion 262 fundamentally prevents the slider 26 from being axially pulled out of the guide rail, avoiding equipment failure when the equipment is vibrating or moving. The two first annular side plates 252 effectively prevent the slider 26 from jumping or tilting in the reference direction, ensuring that the traction member 21 always moves in the same plane and the force transmission direction is stable.

[0046] It should be understood that in another embodiment, the first sliding groove 252a can also be opened on the annular bottom plate 251, so that the protrusion 262 is slidingly embedded in the first sliding groove 252a. At this time, the first annular side plate 252 can be provided or not provided.

[0047] As shown in Figure 7 The annular guide rail 25 includes a second annular side plate 253 connected with the annular bottom plate 251, and the traction member 21 is located between the first annular side plate 252 and the second annular side plate 253. The main body part 261 is provided with two second sliding grooves 261a, one first sliding groove 252a accommodating one second annular side plate 253, and the other first sliding groove 252a accommodating the other second annular side plate 253. In the reference direction, the size of the second sliding groove 261a is greater than the size of the second annular side plate 253.

[0048] The traction member 21 is supported by the annular bottom plate 251 and located between the first annular side plate 252 and the second annular side plate 253, guiding the sliding of the traction member 21 and limiting the slidable traction member 21; by opening the second sliding groove 261a in the second annular side plate 253, the main body part 261 can avoid the two second annular side plates 253, and because the size of the second sliding groove 261a is greater than the size of the second annular side plate 253 in the reference direction, it can avoid the main body part 261 from being stuck during sliding.

[0049] As shown in Figure 6 The end of the second annular side plate 253 forms a limiting block 254, which is configured to limit the sliding range of the main body part 261, and the limiting block 254 extends outwardly along the radial direction of the arm barrel 1.

[0050] As shown in Figure 11 and Figure 13As shown, the traction assembly 2 comprises a support cylinder 27 and limiting rings 28 located at both ends of the support cylinder 27, the limiting rings 28 are connected to the base 51, and the two limiting rings 28 and the support cylinder 27 together form a third sliding groove 27a, the support cylinder 27 is provided with a communication gap communicating the third sliding groove 27a and the inside of the support cylinder 27; the arm cylinder 1 and the isolation piece 7 are arranged in the support cylinder 27, the second end 1b of the arm cylinder 1 can slide into and out of the support cylinder 27 through the communication gap, the width of the second end 1b of the arm cylinder 1 along the reference direction matches the width of the third sliding groove 27a, for example, both are equal or the former is smaller than the latter, the traction piece 21 is slidingly arranged in the third sliding groove 27a, the side wall of the third sliding groove 27a facing the sliding out of the arm cylinder 1 from the annular guide rail 25 is a guide slope 27b, the guide slope 27b is used to guide the sliding of the adapter block 22, the second end 1b of the arm cylinder 1 and the isolation piece 7 through the communication gap.

[0051] The support cylinder 27 and the limiting rings 28 form a structure for supporting the arm cylinder 1 and the traction piece 21, and the third sliding groove 27a formed between the limiting rings 28 and the support cylinder 27 can guide and provide sliding space for the arm cylinder 1, the isolation piece 7 and the traction piece 21; by arranging the guide slope 27b, the arm cylinder 1 and the isolation piece 7 can smoothly slide through the communication gap and enter and exit the support cylinder 27 through the communication gap.

[0052] In order to strengthen the connection strength between the two annular guide rails 25, as shown in Figure 9 and Figure 10 , the traction assembly 2 comprises a reinforcing piece 29 connected to the annular guide rail 25, the reinforcing piece 29 comprises a reinforcing bottom plate 291, and a first side plate 292 and a second side plate 293 connected to the reinforcing bottom plate 291, the reinforcing bottom plate 291 is located on the outer side of the two annular guide rails 25 away from the arm cylinder 1, and the two annular guide rails 25 are located between the first side plate 292 and the second side plate 293.

[0053] The reinforcing bottom plate 291, the first side plate 292 and the second side plate 293 of the reinforcing piece 29 together constitute a firm U-shaped cross-section structure, tightly connecting the two originally independent annular guide rails 25 into a rigid whole, which can effectively resist the radial pressure applied by the traction piece 21 and prevent the annular guide rail 25 from deforming; the reinforcing piece 29 fixes the two annular guide rails 25, locking the axial distance between the two annular guide rails 25, avoiding jamming and shaking during sliding of the sliding block 26.

[0054] It should be understood that the first side plate 292 and the second side plate 293 can be fixed with the annular guide rail 25 by means of bolts, screws, adhesion and the like, and specifically, as shown in Figure 9 and Figure 10As shown, the two annular guide rails 25 are formed with a plurality of positioning pins 255 and buckles 256 on the sides away from each other, the first side plate 292 and the second side plate 293 are formed with positioning holes relative to the positioning pins 255 and are formed with clamping grooves relative to the buckles 256, the first side plate 292 and the second side plate 293 are sleeved on the positioning pins 255 through the positioning holes and are clamped with the buckles 256 through the clamping grooves, so as to limit the sliding of the first side plate 292 and the second side plate 293 away from each other.

[0055] The cooperation of the positioning pins 255 and the positioning holes of the first side plate 292 and the second side plate 293 can position the first side plate 292, the second side plate 293 and the reinforcing bottom plate 291, and the cooperation of the buckles 256 and the clamping grooves can fix the first side plate 292, the second side plate 293 and the reinforcing bottom plate 291.

[0056] Based on the above detailed description, in a specific embodiment, as shown in Figure 1 、 2 , 4, 6, the arm circumference adjusting device comprises an arm cylinder 1, a support assembly 5, a traction assembly 2, a transmission assembly 3 and a motor 4, the arm cylinder 1 has a first end 1a and a second end 1b in the length direction after being unfolded, the support assembly 5 comprises a base 51, the first end 1a of the arm cylinder 1 is connected with the base 51, the traction assembly 2 comprises a traction member 21, the traction member 21 is wrapped around the outside of the arm cylinder 1 and is connected with the second end 1b of the arm cylinder 1, the transmission assembly 3 is installed on the base 51 and comprises a driving member 32 and two driven members 31, one end of the traction member 21 is connected with one of the driven members 31, the other end of the traction member 21 is connected with the other driven member 31, the motor 4 is configured to drive the driving member 32 to rotate, the driving member 32 drives the two driven members 31 to rotate reversely to wind one end of the traction member 21, the other end of the traction member 21 is released synchronously, so that the traction member 21 moves around the arm cylinder 1, the arm cylinder 1 follows the movement of the traction member 21 to contract or expand, which is high in efficiency and compact in structure.

[0057] The working principle is as follows: when the limb needs to be compressed, the motor 4 is started to work, the motor 4 drives the driving member 32 to rotate, the driving member 32 drives the two driven members 31 to rotate synchronously in opposite directions, one of the driven members 31 winds one end of the traction member 21, the other driven member 31 synchronously releases the other end of the traction member 21, so that the traction member 21 moves along the circumference of the arm cylinder 1 like a conveyor belt, the traction member 21 pulls the second end 1b of the arm cylinder 1 to move, so that the arm cylinder 1 winds and contracts to compress the limb; when the limb needs to be released, the motor 4 is reversed, the traction member 21 moves reversely to drive the arm cylinder 1 to unfold, and the arm cylinder 1 releases the limb.

[0058] As shown in Figure 16 、 19, 20, 21, the arm cylinder 1 has a first end 1a and a second end 1b in length direction after unfolding, and a first fixed position 1c and a second fixed position 1d between the first end 1a and the second end 1b, and defines that the first end 1a is located at the inner side of the arm cylinder 1 and the second end 1b is located at the outer side of the arm cylinder 1, the arm cylinder 1 is connected with the support assembly 5 at the first fixed position 1c, and the air bag 6 is installed at the inner side of the arm cylinder 1 and extends from the first end 1a to the second fixed position 1d through the first fixed position 1c; wherein the arm cylinder 1 can be tightened, the air bag 6 is used to compress the artery of the first limb of the user at least corresponding to the first part between the first end 1a and the first fixed position 1c, the air bag 6 is used to compress the artery of the second limb of the user at least corresponding to the second part between the first fixed position 1c and the second fixed position 1d, and the first part and the second part at least partially do not overlap. In this way, different measurement requirements of different users can be met.

[0059] For example, for a disabled person, such as a left arm disabled but right arm healthy, the sphygmomanometer allows the disabled person to use the right arm for measurement; again, for example, an upper limb disabled but a lower limb healthy, the sphygmomanometer allows the disabled person to use the lower limb for measurement, thereby breaking the shackles of left arm measurement of blood pressure.

[0060] For example, after measuring the blood pressure of different limbs by a single sphygmomanometer, the difference in blood pressure of different limbs can be calculated, such as IAD (inter-arm blood pressure difference, inter-arm blood pressure difference), for example, ABI (anklebrachial index, anklebrachial index), etc., and the health condition can be more comprehensively reflected through the comparison of blood pressure of different limbs.

[0061] Through reasonable design of the length of the arm cylinder 1 and the air bag 6, and the position of the related sensor 8, the sphygmomanometer can realize at least one of the following multiple embodiments.

[0062] In some embodiments, the artery of the first limb corresponds to the brachial artery of the right arm, and the artery of the second limb corresponds to the brachial artery of the left arm.

[0063] In some embodiments, the artery of the first limb corresponds to the radial artery of the right wrist, and the artery of the second limb corresponds to the radial artery of the left wrist.

[0064] In some embodiments, the artery of the first limb corresponds to the brachial artery of the left arm, and the artery of the second limb corresponds to the brachial artery of the right arm.

[0065] In some embodiments, the artery of the first limb corresponds to the radial artery of the left wrist, and the artery of the second limb corresponds to the radial artery of the right wrist.

[0066] In some embodiments, the artery of the first limb corresponds to the posterior tibial artery of the left ankle, and the artery of the second limb corresponds to the posterior tibial artery of the right ankle.

[0067] In some embodiments, the artery of the first limb corresponds to the posterior tibial artery of the right ankle, and the artery of the second limb corresponds to the posterior tibial artery of the left ankle.

[0068] In some embodiments, the artery of the first limb corresponds to the brachial artery of the left arm or the right arm, and the artery of the second limb corresponds to the posterior tibial artery of the left ankle or the right ankle.

[0069] In some embodiments, the artery of the first limb corresponds to the brachial artery of the left arm or the right arm, and the artery of the second limb corresponds to the posterior tibial artery of the left ankle or the right ankle.

[0070] As shown in Figs. 17 and 18, the sphygmomanometer comprises a partition 7 covering the end of the air bag 6 corresponding to the second fixing position Id, and the partition 7 and the air bag 6 extend reversely along the arm tube 1, and the partition 7 extends at least to the side of the arm tube 1 away from the air bag 6. Figure 14 , 16 The partition 7 covers the end of the air bag 6 corresponding to the second fixing position Id, and extends to the side of the arm tube 1 away from the air bag 6. During the tightening of the arm tube 1, the two ends of the air bag 6 approach each other, but are isolated by the partition 7, so that the two ends of the air bag 6 are prevented from being pressed against each other, especially in the case that the two ends of the air bag 6 will overlap (for example, for a user with a small arm circumference such as a child), thereby ensuring that the arm tube 1 is tightened in place. Of course, the repeated twisting and folding of the air bag 6 is also avoided, greatly reducing the fatigue and wear of the material of the air bag 6, and prolonging the service life of the product. In addition, the air bag 6 wrapped flatly is more uniform in pressing the limb than the air bag 6 stacked and twisted, and the discomfort is significantly reduced.

[0071] As shown in Figs. 17 and 18, the sphygmomanometer comprises a partition 7 covering the end of the air bag 6 corresponding to the second fixing position Id, and the partition 7 and the air bag 6 extend reversely along the arm tube 1, and the partition 7 extends at least to the side of the arm tube 1 away from the air bag 6.

[0072] As shown in Figs. 17 and 18, the sphygmomanometer comprises a partition 7 covering the end of the air bag 6 corresponding to the second fixing position Id, and the partition 7 and the air bag 6 extend reversely along the arm tube 1, and the partition 7 extends at least to the side of the arm tube 1 away from the air bag 6. Figure 16 Thus, on the one hand, the partition 7 and the arm tube 1 are fixed at the second end 1b by the same fastener (for example, the first screw 223 and / or the second screw 224), simplifying the structure, and on the other hand, the partition 7 can structurally reinforce the arm tube 1, sharing a part of the pulling force from the traction member 21, thereby increasing the reliability.

[0073] In other embodiments, as shown in Figs. 19 and 20, the sphygmomanometer comprises a partition 7 having a first partition portion 71 covering the end of the air bag 6 corresponding to the second fixing position Id, and a second partition portion 72 abutting against the arm tube 1, and the side of the second partition portion 72 away from the arm tube 1 is provided as a slope surface 72a. Figure 17 Figure 18 In other embodiments, as shown in Figs. 19 and 20, the sphygmomanometer comprises a partition 7 having a first partition portion 71 covering the end of the air bag 6 corresponding to the second fixing position Id, and a second partition portion 72 abutting against the arm tube 1, and the side of the second partition portion 72 away from the arm tube 1 is provided as a slope surface 72a.​

[0074] When the arm sleeve 1 is tightened, the first end la of the arm sleeve 1 is pressed, which drives one end of the air bag 6 to slide towards the other end of the air bag 6. By providing the slope surface 72a, the slope surface 72a can guide the first end la of the arm sleeve 1 and the one end of the air bag 6 to slide past the other end of the air bag 6, thereby spacing the one end and the other end of the air bag 6, avoiding the ends of the air bag 6 from being pressed against each other when the arm sleeve 1 is tightened.

[0075] It should be understood that the air bag 6 and the inner side of the arm sleeve 1 can be connected by sewing, bonding, riveting, etc. The air bag 6 can be entirely attached to the inner wall of the arm sleeve 1, or only partially connected to the inner wall of the arm sleeve 1.

[0076] As an example, as shown in Figure 16 and Figure 21 , the air bag 6 has a double-layer structure, and the two layers can be inflated to further compress the blood vessels. One end of the air bag 6 is bag-shaped to allow the first end la of the arm sleeve 1 to extend into the bag-shaped one end of the air bag 6, thereby supporting the air bag; the inner middle part of the air bag 6 is riveted to the reinforcing bottom plate 291 by rivets, without hindering the outer middle part from bulging; the other end of the air bag 6 is clamped between the arm sleeve 1 and the spacer 7, and the three are riveted together at the second fixed position Id by rivets.

[0077] In some embodiments, as shown in Figure 19 and Figure 21 , the sphygmomanometer further comprises a sensor assembly 8 installed in the air bag 6, the sensor assembly 8 comprising a first sensor 81 and a second sensor 82, the first sensor 81 being located in a first part of the air bag 6, and the second sensor 82 being located in a second part of the air bag 6; wherein the first sensor 81 is a piezoelectric sensor or a microphone, and the second sensor 82 is a piezoelectric sensor or a microphone. When the sensor is a pressure sensor, the pressure sensor can sense the slight pressure fluctuation of the arterial pulse and convert it into a first electric signal; when the sensor is a microphone, the microphone can collect the Korotkoff sound generated by the blood flushing the arterial vessel wall and convert it into a second electric signal. In this way, the sphygmomanometer can measure blood pressure based on the first electric signal and / or the second electric signal.

[0078] Furthermore, the electrical signal collected and converted by one of the first sensor 81 and the second sensor 82 is used to measure blood pressure, which helps reduce the data processing load of the blood pressure monitor, thereby reducing power consumption. For example, when a user measures blood pressure in the first limb, the pressure signal or Korotkoff sound signal collected by the first sensor 81 is used to measure blood pressure; when the user measures blood pressure in the second limb, the pressure signal or Korotkoff sound signal collected by the second sensor 82 is used to measure blood pressure. Of course, the signals collected by both the first sensor 81 and the second sensor 82 are used to measure blood pressure, which helps increase the reliability of blood pressure measurement. For example, when a user measures blood pressure in the first limb, although the first sensor 81 is closer to the artery and the collected signal is mainly the useful pressure signal or Korotkoff sound signal, it may also contain harmful noise signals. The second sensor 82 is farther from the artery and the collected signal is mainly the harmful noise signal. The two sensors work together to reduce the interference of environmental noise, thereby increasing the reliability of blood pressure measurement. The process is similar when the user measures blood pressure in the second limb, and will not be described in detail here.

[0079] It should be understood that the pressure sensor and microphone can be located on the side of the airbag 6 facing the limb, on the side of the airbag 6 away from the limb, or inside the airbag 6.

[0080] In some other implementations, such as Figure 20 As shown, the blood pressure monitor includes a sensor assembly 8, which includes a microphone 83, and a first stethoscope head 84 and a second stethoscope head 85 installed within an air bladder 6 and communicating with the microphone 83. The first stethoscope head 84 is located in a first part of the air bladder 6, and the second stethoscope head 85 is located in a second part of the air bladder 6. The microphone can collect Korotkoff sounds generated by blood flowing over the arterial walls through the first stethoscope head 84 and / or the second stethoscope head 85, and convert them into electrical signals. The blood pressure monitor can then measure blood pressure based on these electrical signals.

[0081] It should be understood that the stethoscope head can be positioned on the side of the airbag 6 facing the limb, on the side of the airbag 6 away from the limb, or inside the airbag 6.

[0082] In some other embodiments, only one stethoscope head, microphone, or pressure sensor is provided, and it is located at the first fixed position 1c.

[0083] The specific embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any other corresponding changes and modifications made in accordance with the technical concept of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A blood pressure monitor, characterized in that, The blood pressure monitor includes a support assembly, an arm tube, and an air bladder. When unfolded, the arm tube has a first end and a second end in its length direction, and a first fixing position and a second fixing position located between the first end and the second end. The first end is defined as being located inside the arm tube, and the second end as being located outside the arm tube. The arm tube is connected to the support assembly at the first fixing position. The air bladder is mounted inside the arm tube and extends from the first end through the first fixing position to the second fixing position. The arm tube can be tightened. The air bladder at least corresponds to a first portion between the first end and the first fixing position for compressing an artery in the user's first limb, and at least corresponds to a second portion between the first fixing position and the second fixing position for compressing an artery in the user's second limb. The first portion and the second portion at least partially do not overlap.

2. The blood pressure monitor according to claim 1, characterized in that, The artery of the first limb corresponds to the brachial artery of the right arm, and the artery of the second limb corresponds to the brachial artery of the left arm; or, The artery of the first limb corresponds to the radial artery of the right wrist, and the artery of the second limb corresponds to the radial artery of the left wrist; or, The artery of the first limb corresponds to the brachial artery of the left arm, and the artery of the second limb corresponds to the brachial artery of the right arm; or, The artery of the first limb corresponds to the radial artery of the left wrist, and the artery of the second limb corresponds to the radial artery of the right wrist; or, The artery of the first limb corresponds to the brachial artery of the left or right arm, and the artery of the second limb corresponds to the posterior tibial artery of the left or right ankle.

3. The blood pressure monitor according to claim 1, characterized in that, The blood pressure monitor includes an isolator that covers the end of the air bladder corresponding to the second fixation position. With reference to the second fixation position, the isolator and the air bladder extend in the opposite direction along the arm tube, with the isolator extending at least to the side of the arm tube opposite to the air bladder.

4. The blood pressure monitor according to claim 3, characterized in that, The isolating element further extends through the first fixing position to the second end of the boom.

5. The blood pressure monitor according to claim 4, characterized in that, The blood pressure monitor includes a traction assembly and a transmission assembly. The traction assembly includes a traction member that surrounds the outside of the arm cylinder and is connected to the second end and the isolator. The transmission assembly includes two driven members. One end of the traction member is connected to one of the driven members, and the other end of the traction member is connected to the other driven member. At least one of the two driven members can be driven to wrap around one end of the traction member. The other end of the traction member is released synchronously, causing the traction member to move around the arm cylinder. The arm cylinder tightens or expands following the movement of the traction member.

6. The blood pressure monitor according to claim 5, characterized in that, The blood pressure monitor includes a motor, and the transmission assembly includes an active component connected to the motor. The motor is configured to drive the active component to rotate, and the active component drives two driven components to rotate in opposite directions.

7. The blood pressure monitor according to claim 6, characterized in that, The driving component includes a first rotating shaft and a first gear connected to the first rotating shaft; the motor is connected to the first rotating shaft; the driven component includes a second rotating shaft and a second gear connected to the second rotating shaft; the second rotating shaft and the first rotating shaft are arranged parallel to each other; the second gear meshes with the first gear. The traction member is configured as a belt, and a second gear is respectively provided at both ends of the second rotating shaft. One end of the traction member is connected to the second rotating shaft of one of the driven members and is located between the two second gears of the same driven member. The other end of the traction member is connected to the second rotating shaft of another driven member and is located between the two second gears of the same driven member. Alternatively, the traction member is configured as a rope, the second rotating shaft is provided with a second gear, one end of the traction member is connected to the second rotating shaft of one of the driven members, the other end of the traction member is connected to the second rotating shaft of another driven member, and a traction member is respectively provided on both sides of the second gear in the axial direction of the driven member.

8. The blood pressure monitor according to claim 6, characterized in that, The driving component includes a third rotating shaft and a third gear connected to the third rotating shaft; the motor is connected to the third rotating shaft. The driven component includes a fourth rotating shaft and a fourth gear connected to the fourth rotating shaft; the fourth rotating shaft and the third rotating shaft are arranged parallel to each other; the fourth gear meshes with the third gear. The traction component is arranged in the shape of a rope and there are two of them. There are two fourth rotating shafts and two fourth gears. The four fourth rotating shafts are arranged at intervals around the third rotating shaft. The four fourth gears are arranged at intervals around the third gear. One end of each of the two traction components is connected to one of the two fourth rotating shafts of one of the driven components. The other end of each of the two traction components is connected to one of the two fourth rotating shafts of another driven component.

9. The blood pressure monitor according to claim 5, characterized in that, The traction assembly further includes an adapter block, which fixes the arm cylinder and the isolation member to the traction member at the second end; wherein, the direction in which the user's limb extends into the arm cylinder is defined as a reference direction, the first dimension of the traction member in the reference direction is smaller than the second dimension of the arm cylinder in the reference direction, and the third dimension of the adapter block in the reference direction is between the first dimension and the second dimension.

10. The blood pressure monitor according to claim 9, characterized in that, The adapter block includes an integral fixing part and a guiding part. The thickness of the fixing part is less than the thickness of the guiding part. The boom and the isolation member are mounted on the fixing part. The boom is flush with the guiding part. The fixing part is further mounted on the traction member.

11. The blood pressure monitor according to claim 4, characterized in that, The support assembly includes a base and a support plate. The support plate includes an integrally connected bottom plate and a side plate. The side plate is connected to the base. The boom is connected to the bottom plate at the first fixed position and passes through the gap between the bottom plate and the base together with the isolation member. The airbag is mounted on the bottom plate.

12. The blood pressure monitor according to claim 11, characterized in that, The support assembly includes a first limiting shaft and a second limiting shaft connected to the side plate. The first limiting shaft and the second limiting shaft are spaced apart along the circumference of the arm cylinder. The arm cylinder and the isolation member pass through the gap between the second limiting shaft and the base and the gap between the first limiting shaft and the base in sequence.

13. The blood pressure monitor according to claim 1, characterized in that, The blood pressure monitor includes an isolation element having a first isolation portion and a second isolation portion. The first isolation portion covers the end of the air bladder corresponding to the second fixing position, and the second isolation portion is fitted to the arm cylinder, with the side of the second isolation portion away from the arm cylinder being configured as a slope.

14. The blood pressure monitor according to claim 1, characterized in that, The blood pressure monitor includes a sensor assembly installed within the air bladder. The sensor assembly includes a first sensor and a second sensor, with the first sensor located in the first portion and the second sensor located in the second portion. The first sensor is a piezoelectric sensor or a microphone, and the second sensor is a piezoelectric sensor or a microphone.

15. The blood pressure monitor according to claim 1, characterized in that, The blood pressure monitor includes a sensor assembly installed within the air bladder. The sensor assembly includes a microphone, and a first stethoscope head and a second stethoscope head installed within the air bladder and communicating with the microphone. The first stethoscope head is located in the first portion, and the second stethoscope head is located in the second portion.

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