Telescopic device and blood pressure measuring device

Abstract

The invention relates to a telescopic device which comprises a supporting structure used for fixing a reducing ring of a blood pressure measuring device, the supporting structure comprises a hollow channel, and the hollow channel provides a penetrating space for the reducing ring; the first fixing structure is arranged in the direction intersecting with the first side edge, located below the variable-diameter ring, of the supporting structure, and the two ends of the first fixing structure are used for fixing a sensor of the blood pressure measuring device respectively; the telescopic structure and the supporting structure are symmetrically arranged, one side of the telescopic structure is at least partially connected with the second side edge, located above the variable-diameter ring, of the supporting structure, and the other side of the telescopic structure is at least partially fixedly connected with an arm cylinder of the blood pressure measuring device; and the telescopic structure is used for providing a moving space for the supporting structure to move in the vertical direction when the reducing ring performs reducing motion, so that the sensor can move up and down. The telescopic device provided by the invention not only can provide a moving space for reducing motion of the reducing ring, but also can ensure that the sensor always keeps moving up and down in the reducing motion process of the reducing ring, so that the sensor is prevented from deviating from a measuring position of a brachial artery of an upper arm of a measurer due to circumferential position deviation.

Description

Technical Field

[0001] This application relates to the technical field of medical devices, and particularly to a telescopic device and a blood pressure measuring device. Background Art

[0002] The information provided in this part is only background information related to the present disclosure, and it is not necessarily prior art.

[0003] In the field of blood pressure measuring devices, there is a blood pressure measuring device using the Korotkoff sound measurement principle. It uses two piezoelectric sensors attached to the surface of an airbag. The cuff is tightened and wrapped around the arm, and the piezoelectric sensors are closely attached to the brachial artery of the arm to detect the signal of blood vessel flow.

[0004] The inventor found that setting a variable diameter ring in the blood pressure measuring device can well adapt to the arm circumferences of different users. However, for this structure, as the effective measurement length of the variable diameter ring changes, the rotation angle and diameter of the variable diameter ring also change. Since the airbag is fixed on the variable diameter ring, the position and angle of the sensor attached to the airbag will change, resulting in the sensor not being able to fit well on the measurement position of the brachial artery of the arm, and the phenomenon of inaccurate blood pressure measurement occurs. Summary of the Invention

[0005] The purpose of this application is to at least solve the problem that the position of the sensor changes during blood pressure detection in the existing blood pressure measuring device, resulting in inaccurate measurement. This purpose is achieved through the following technical solutions:

[0006] The first aspect of this application provides a telescopic device for a blood pressure measuring device, including: a support structure fixed to the variable diameter ring of the blood pressure measuring device. The support structure includes a hollow channel that provides a threading space for the variable diameter ring; a first fixing structure arranged in a direction intersecting with the first side of the support structure located below the variable diameter ring. The two ends of the first fixing structure are respectively used to fix the sensor of the blood pressure measuring device; a telescopic structure symmetrically arranged with the support structure. One side of the telescopic structure is at least partially connected to the second side of the support structure located above the variable diameter ring, and the other side is at least partially fixedly connected to the arm tube of the blood pressure measuring device. The telescopic structure is used to provide a moving space for the support structure to move in the vertical direction when the variable diameter ring undergoes a variable diameter movement, so that the sensor can move up and down.

[0007] It is understandable to those skilled in the art that the present application proposes fixing the sensor on the telescopic device, and the reducing ring moves through the hollow channel of the supporting structure. No matter how the diameter of the reducing ring is scaled, the sensor can only move up and down under the constraint of the telescopic device, and will not be circumferentially offset due to the reduction and expansion of the reducing ring, so that the sensor can always remain in the brachial artery measurement position of the arm, so as to achieve the purpose of accurately measuring the blood flow of the brachial artery in the arm. At the same time, through the cooperation of the telescopic structure and the supporting structure, it is possible to provide the reducing ring with a space for moving up and down, expanding the size range of the reducing ring to adapt to the user's arm circumference.

[0008] In some embodiments, the telescopic structure includes: a first stretching member, which constitutes the other side of the telescopic structure fixedly connected to the arm tube of the blood pressure measuring device; a second stretching member, which constitutes one side of the telescopic structure fixedly connected to the supporting structure; the first stretching member and the second stretching member are symmetrically fitted when there is no external force, and the reducing ring drives the first stretching member and the second stretching member to bend upward or downward when the reducing ring changes diameter.

[0009] In some embodiments, at least one of the first tensile member and the second tensile member is configured as an elastic structure; and / or at least one of the first tensile member and the second tensile member is configured as a flexible plate.

[0010] In some embodiments, two ends of the first stretching member are rotatably connected to two ends of the second stretching member respectively, and when the first stretching member and the second stretching member are bent upward or downward, the two ends of the second stretching member rotate relative to the two ends of the first stretching member.

[0011] In some embodiments, two ends of the first stretching member are respectively connected to two ends of the second stretching member through hinges, and the first stretching member, the second stretching member and the hinges constitute a hinge mechanism.

[0012] In some embodiments, the preset position of the second stretching member is fixed at a position symmetrical to the supporting structure, and both sides of the preset position of the second stretching member move upward or downward under the action of the external force generated when the reducing ring performs the reducing movement.

[0013] In some embodiments, the preset position of the first stretching member is fixed to the arm tube by a second fixing structure, and both sides of the preset position of the first stretching member move upward or downward under the action of the external force generated when the reducing ring performs a diameter-changing movement.

[0014] In some embodiments, the support structure is configured as an arc-shaped plate or a plastic sheet. When the support structure is configured as an arc-shaped plate, the bending angle of the arc-shaped plate matches the bending angle of the reducing ring disposed inside the arc-shaped plate.

[0015] In some embodiments, the first fixing structure is vertically arranged on the supporting structure, and a fixing position is respectively arranged at both ends of the first fixing structure, and the shape of the fixing position is adapted to the sensor.

[0016] A second aspect of the present application provides a blood pressure measurement device, comprising: an arm cylinder; a diameter-changing ring movably disposed within the arm cylinder; and a telescopic device according to the first aspect of the present application, which provides a moving space for the diameter-changing movement of the diameter-changing ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present application. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0018] Figure 1 is a schematic structural diagram of a blood pressure measurement device according to an embodiment of the present application;

[0019] Figure 2 is Figure 1 a schematic assembly structural diagram of the telescopic device, the support structure and the diameter-changing ring in the shown blood pressure measurement device;

[0020] Figure 3 is Figure 2 a schematic structural diagram of the telescopic device in the shown blood pressure measurement device.

[0021] Among them, the reference numerals are as follows:

[0022] 100, telescopic device; 1, support structure; 101, hollow channel; 2, first fixing structure; 21, sensor; 3, telescopic structure; 301, first tension member; 302, second tension member; 303, hinge; 4, second fixing structure; 5, arm cylinder; 6, diameter-changing ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following will describe the exemplary embodiments of the present disclosure in more detail with reference to the drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be completely conveyed to those skilled in the art. It should be noted that the telescopic device of the present application is described by a blood pressure measurement device only as a preferred embodiment, and it is not a limitation on the application scope of the telescopic device. The telescopic device of the present application can also be used in other medical devices, and such adjustment does not deviate from the protection scope of the telescopic device of the present application.

[0024] It should be understood that the terms used herein are for the purpose of describing particular example embodiments only and are not intended to be limiting. Unless the context clearly dictates otherwise, the singular forms "a", "an" and "the" as used herein may also include the plural. The terms "comprising", "including" and "having" are inclusive and thus specify the presence of the stated features, elements and / or components, but do not preclude the presence or addition of one or more other features, elements, components, and / or combinations thereof.

[0025] Although the terms first, second, etc. may be used herein to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer or section from another. Unless the context clearly dictates otherwise, terms such as "first", "second" and other numerical terms do not imply an order or sequence when used herein. Additionally, in the description of the present application, unless otherwise clearly specified and defined, the terms "arranged", "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0026] For ease of description, spatial relative relationship terms may be used herein to describe the relationship of one element or feature shown in the figures to another element or feature, such relative relationship terms such as "end", "length", "inner", "outer", etc. Such spatial relative relationship terms are intended to include different orientations of the mechanism in use or operation other than the orientation depicted in the figures. For example, if the mechanism in the figures is flipped, then an element described as "beneath" or "under" other elements or features will then be oriented "above" or "over" other elements or features. Thus, the exemplary term "beneath" can include both above and below orientations. The mechanism may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative relationship descriptors used herein are interpreted accordingly.

[0027] As Figures 1 to 3As shown in the figure, an embodiment of the present application provides a telescopic device 100 for a blood pressure measuring device, including: a support structure 1, a variable-diameter ring 6 fixed to the blood pressure measuring device, the support structure 1 includes a hollow channel 101, and the hollow channel 101 provides a threading space for the variable-diameter ring 6; a first fixing structure 2, arranged along a direction intersecting with the first side of the support structure 1 located below the variable-diameter ring 6, and two ends of the first fixing structure 2 are respectively used to fix the sensor 21 of the blood pressure measuring device; a telescopic structure 3, symmetrically arranged with the support structure 1, one side of the telescopic structure 3 is at least partially connected to the second side of the support structure 1 located above the variable-diameter ring 6, and the other side is at least partially fixedly connected to the arm cylinder 5 of the blood pressure measuring device. The telescopic structure 3 is used to provide a moving space for the support structure 1 to move in the vertical direction when the variable-diameter ring 6 performs a variable-diameter movement, so that the sensor 21 can move up and down.

[0028] In this embodiment, the present application proposes to fix the sensor 21 on the telescopic device 100, and the variable-diameter ring movably passes through the hollow channel 101 of the support structure 1. Regardless of how the diameter of the variable-diameter ring is scaled, the sensor 21 can only move up and down under the constraint of the telescopic device 100, and will not undergo circumferential offset due to the shrinkage and enlargement of the variable-diameter ring 6, so that the sensor 21 can always remain at the brachial artery measurement position of the arm and accurately measure the pulsation signal of the brachial artery. At the same time, through the cooperation of the telescopic structure 3 and the support structure 1, an up-and-down moving space can be provided for the variable-diameter ring 6 to expand the range of the variable-diameter ring 6 to adapt to different arm circumferences.

[0029] Specifically, a scalable variable-diameter ring 6 is installed inside the arm cylinder 5 of the blood pressure measuring device. One end of the variable-diameter ring 6 is fixed and the other end is floating. By driving the mechanism to pull the other end of the variable-diameter ring 6 to move, the purpose of scaling the variable-diameter ring 6 to wrap different arm circumferences for blood pressure measurement is achieved. The telescopic device 100 provides a moving space for adjusting the effective length of the variable-diameter ring 6 used to wrap the arm for blood pressure measurement. During the movement of the other end of the variable-diameter ring 6, its diameter changes accordingly to adapt to different arm circumferences. In other words, the effective length of the variable-diameter ring 6 wrapping the upper arm of the user will be adjusted according to the thickness of the upper arm.

[0030] The telescopic device 100 is fixed to the inner side of the top of the arm cylinder 5 of the blood pressure measuring device through the second fixing structure 4. The part of the variable-diameter ring 6 in contact with the hollow channel 101 is the top of the variable-diameter ring 6. When the blood pressure measuring device works, the driving mechanism engaged with one end of the variable-diameter ring 6 drives the end of the variable-diameter ring 6 to stretch outwards. The variable-diameter ring 6 continuously slides downward through the hollow channel 101, and the part of the variable-diameter ring 6 engaged with the driving mechanism continuously moves upward, and the diameter of the variable-diameter ring 6 gradually shrinks. At the same time, under the action of the driving mechanism, the top of the variable-diameter ring 6 pulls the support structure 1 to move downward, and the sensor 21 is fixed to both ends of the first fixing structure 2 arranged crosswise with the support structure 1. The sensor 21 and the support structure 1 are relatively fixed in position relative to the horizontal direction. Therefore, during the process of the support structure 1 moving downward or upward, neither the support structure 1 nor the sensor 21 fixed on the support structure 1 will have a circumferential offset phenomenon.

[0031] During the process of the support structure 1 moving up and down, it pulls the telescopic structure 3 to perform telescopic movement, and the distance between the support structure 1 and the second fixing structure 4 will change. When the blood pressure measuring device finishes measuring, the variable-diameter ring 6 will slowly return to the enlarged state, and the telescopic structure 3 rebounds to pull the sensor 21 back to its original position to prepare for the next round of measurement. During this process, through the cooperation of the telescopic structure 3 and the support structure 1, it not only meets the variable-diameter requirement of the variable-diameter ring 6, but also does not cause the sensor 21 to deviate circumferentially and thus cannot fit the brachial artery measurement position of the arm.

[0032] It should be noted that the specific structures of the telescopic structure 3 and the support structure 1 are not limited in the embodiments of the present application because the inventive point of the present application lies in providing a moving space for the telescopic movement of the variable-diameter ring 6 through the cooperation of the telescopic structure 3 and the support structure 1 and restricting the circumferential offset of the sensor 21. As for the specific structures of the telescopic structure 3 and the support structure 1, they include various embodiments. For example, the telescopic structure 3 can be set as an elastic structure, a flexible structure, a link structure or a hinge structure, etc. These embodiments all belong to the protection scope of the telescopic structure 3 of the present application. As for other embodiments of the telescopic structure 3, they will not be elaborated one by one here.

[0033] Next, the specific structures of the telescopic structure 3 and the support structure 1 in the embodiments of the present application will be elaborated in detail.

[0034] As Figures 1 to 3 shown, in some embodiments, the telescopic structure 3 includes: a first stretching member 301, which constitutes the other side of the telescopic structure 3 fixedly connected to the arm cylinder 5 of the blood pressure measuring device; a second stretching member 302, which constitutes one side of the telescopic structure 3 fixedly connected to the support structure 1; the first stretching member 301 and the second stretching member 302 are symmetrically attached to each other without external force, and when the variable-diameter ring 6 performs variable-diameter movement, it drives the first stretching member 301 and the second stretching member 302 to perform upward or downward bending movement.

[0035] In this embodiment, the first stretching member 301 and the second stretching member 302 include flexible rods or flexible sheets. During the radial contraction process of the diameter-changing ring 6, the first stretching member 301 and the second stretching member 302 undergo elastic deformation and provide a moving space for the radial expansion and contraction of the diameter-changing ring 6 by bending up and down. When the diameter-changing ring 6 returns to its original state, the first stretching member 301 and the second stretching member 302 return from the elastic deformation state to the original fitting state, preparing for the next round of measurement of the blood pressure measuring device.

[0036] Specifically, the telescopic structure 3 is arranged to be composed of two stretching members, which can increase the telescopic space of the telescopic structure 3, enable the diameter-changing ring 6 to have sufficient telescopic space to adapt to arms with different arm circumferences, and improve the applicable range of the blood pressure measuring device for users with different arm circumferences.

[0037] At the same time, the telescopic structure 3 is arranged to be composed of two stretching members, which can also improve the tensile capacity of the telescopic structure 3 and reduce the risk of the telescopic structure 3 being damaged due to excessive stress during the telescopic process of the diameter-changing ring 6.

[0038] Such as Figures 1 to 3 shown, in some embodiments, at least one of the first stretching member 301 and the second stretching member 302 is arranged as an elastic structure; and / or, at least one of the first stretching member 301 and the second stretching member 302 is arranged as a flexible plate.

[0039] In this embodiment, by arranging at least one of the first stretching member 301 and the second stretching member 302 as an elastic structure or a flexible member, the first stretching member 301 and the second stretching member 302 can provide a moving space for the telescopic movement of the diameter-changing ring 6 through deformation and can return to the original state along with the diameter-changing ring 6, improving the service life of the first stretching member 301 and the second stretching member 302.

[0040] Specifically, the first stretching member 301 and the second stretching member 302 can be arranged as plate-like structures, sheet-like structures, rod-like structures or spring structures, and these structures can all provide a moving space for the telescopic movement of the diameter-changing ring 6 through their own deformation.

[0041] Such as Figures 1 to 3 shown, in some embodiments, the two ends of the first stretching member 301 are respectively rotatably connected to the two ends of the second stretching member 302. During the process of the first stretching member 301 and the second stretching member 302 bending upward or downward, the two ends of the second stretching member 302 rotate relative to the two ends of the first stretching member 301.

[0042] In this embodiment, by rotatably connecting the two ends of the first stretching member 301 to the two ends of the second stretching member 302 respectively, the relative rotation of the first stretching member 301 and the second stretching member 302 provides a movement space for the telescopic movement of the diameter-changing ring 6. Compared with the way of only deforming by stretching the first stretching member 301 and the second stretching member 302, the tensile force borne by the first stretching member 301 and the second stretching member 302 can be reduced, and the service life of the first stretching member 301 and the second stretching member 302 can be prolonged.

[0043] As Figures 1 to 3 shown, in some embodiments, the two ends of the first stretching member 301 are respectively connected to the two ends of the second stretching member 302 through a hinge 303, and the first stretching member 301, the second stretching member 302 and the hinge 303 form a hinge mechanism.

[0044] In this embodiment, when the first stretching member 301 and the second stretching member 302 are arranged in a plate-like structure or a sheet-like structure, the thicknesses of the first stretching member 301 and the second stretching member 302 are limited, and the method of arranging a rotating shaft or a shaft sleeve on the first stretching member 301 and the second stretching member 302 is not very practical. Therefore, the embodiments of the present application propose that the first stretching member 301 and the second stretching member 302 are connected to two hinge pieces of the hinge 303, so as to realize the relative rotational movement between the first stretching member 301 and the second stretching member 302, without the need to arrange a rotating shaft or a shaft sleeve on the first stretching member 301 or the second stretching member 302.

[0045] As Figures 1 to 3 shown, in some embodiments, a preset part of the second stretching member 302 is fixed at a position symmetrical to the support structure 1, and both sides of the preset part of the second stretching member 302 move upward or downward under the action of an external force generated when the diameter-changing ring 6 performs a diameter-changing movement.

[0046] In this embodiment, fixing the preset part of the second stretching member 302 at a position symmetrical to the support structure 1 can make the second stretching member 302 uniformly stressed and reduce the phenomenon that the second stretching member 302 is damaged due to uneven stress. In addition, the preset part of the second stretching member 302 includes the middle part of the second stretching member 302. At this time, both ends of the second stretching member 302 are suspended, forming two free ends that can deform up and down. By setting both ends of the second stretching member 302 to be able to move upward or downward, a movement space can be provided for the telescopic movement of the diameter-changing ring 6, so that the diameter-changing ring 6 can normally perform telescopic movement.

[0047] Furthermore, since the two ends of the first stretching member 301 are rotatably connected to the two ends of the second stretching member 302 respectively, in order to realize the relative circumferential movement between the first stretching member 301 and the second stretching member 302, the two ends of the second stretching member 302 are configured to be able to bend upward or downward to compensate for the circumferential movement, thereby reducing the jamming phenomenon that occurs during the rotation of the first stretching member 301 relative to the second stretching member 302.

[0048] like Figures 1 to 3 As shown, in some embodiments, the preset position of the first stretching member 301 is fixed to the arm tube 5 by the second fixing structure 4, and both sides of the preset position of the first stretching member 301 move upward or downward under the action of the external force generated when the reducing ring 6 performs a diameter changing movement.

[0049] In this embodiment, the two ends of the preset position of the first stretching member 301 can not only support the second stretching member 302 and the reducing ring 6, reducing the downward collapse of the reducing ring 6 during use, but also after the reducing ring 6 is used, the two ends of the preset position of the first stretching member 301 can also bring the second stretching member 302 and the reducing ring 6 back to their original positions under the action of their own elastic potential energy.

[0050] In addition, a preset position of the first stretching member 301 is fixed to the second fixed structure 4, such as the middle part of the second stretching member 302 is fixed to the second fixed structure 4. At this time, the two ends of the first stretching member 301 are suspended and constitute two free ends that can be deformed up and down. By setting the two ends of the first stretching member 301 to be able to move upward or downward, it is possible to provide a movable space for the telescopic movement of the reducing ring 6, so that the reducing ring 6 can perform telescopic movement normally.

[0051] Furthermore, the two ends of the first stretching member 301 are rotatably connected to the two ends of the second stretching member 302 respectively. In order to realize the relative circumferential movement between the first stretching member 301 and the second stretching member 302, the two ends of the first stretching member 301 are configured to be able to bend upward or downward to compensate for the circumferential movement, thereby reducing the jamming phenomenon during the rotation of the first stretching member 301 relative to the second stretching member 302.

[0052] like Figures 1 to 3 As shown, in some embodiments, the support structure 1 is configured as an arc-shaped plate or a plastic sheet. When the support structure 1 is configured as an arc-shaped plate, the bending angle of the arc-shaped plate matches the bending angle of the reducing ring 6 inserted therein.

[0053] In this embodiment, by setting the supporting structure 1 as an arc-shaped plate with a bending angle matching the bending angle of the reducing ring 6, the reducing ring 6 can shuttle smoothly inside the arc-shaped plate, thereby reducing the sticking and wear of the reducing ring 6 during the shuttling process and improving the reducing effect of the reducing ring 6.

[0054] Specifically, the diameter-changing ring 6 is arranged as a circumferentially distributed ring structure. The support structure 1 is arranged at the top of the diameter-changing ring 6. The top of the diameter-changing ring 6 passes through the hollow channel 101 inside the support structure 1, so that the top of the diameter-changing ring 6 can shuttle inside the diameter-changing ring 6 to achieve the purpose of diameter change.

[0055] In addition, the top of the support structure 1 is arranged as a metal plate, and the bottom of the support structure 1 is arranged as a plastic sheet. A hollow channel 101 is formed between the metal plate and the plastic sheet. By arranging the bottom of the support structure 1 as a plastic sheet, the plastic sheet has the ability of elastic deformation. When the diameter-changing ring 6 needs to be radially scaled, the plastic sheet can be squeezed by the diameter-changing ring 6 and deformed along with the change of the diameter-changing ring 6, so as to adapt to the radial scaling of the diameter-changing ring 6 and enable the diameter-changing ring 6 to perform normal scaling actions.

[0056] Furthermore, the plastic sheet at the bottom of the support structure 1 is detachably mounted on the metal plate at the top of the support structure 1. When the plastic sheet is damaged due to long-term wear by the diameter-changing ring 6, the plastic sheet can be detached from the metal plate and a new plastic sheet can be replaced.

[0057] As Figure 1 and Figure 3 shown, in some embodiments, the first fixing structure 2 is vertically arranged on the support structure 1, and a fixing position is arranged at each end of the fixing structure. The shape of the fixing position is adapted to the sensor 21.

[0058] In this embodiment, the first fixing structure 2 is vertically arranged at the bottom of the support structure 1, and the two are arranged as an integral structure. By arranging the sensor 21 at the sensor fixing positions at both ends of the first fixing structure 2, when the support structure 1 drives the sensor 21 to move up and down through the first fixing structure 2 during the lifting process, the sensor 21 and the support structure 1 are relatively fixed in position relative to the horizontal direction, avoiding the phenomenon of circumferential offset of the sensor 21 during the lifting process of the support structure 1.

[0059] Furthermore, the first fixing structure 2 can also play a role in protecting the sensor 21, reducing the phenomenon of extrusion or bending of the sensor 21 during the lifting process.

[0060] As Figure 1 and Figure 3 shown, in the second aspect of the present application, a blood pressure measuring device is provided, including: an arm cylinder 5; a diameter-changing ring 6 movably arranged inside the arm cylinder 5; the telescopic device 100 of the first aspect of the present application, which provides a moving space for the diameter-changing movement of the diameter-changing ring 6.

[0061] In this embodiment, the blood pressure measuring device can provide a movable space for the variable diameter ring 6 to move up and down through the cooperation of the telescopic structure 3 and the supporting structure 1, so as to expand the range of the variable diameter ring 6 to adapt to different arm circumferences. Moreover, the sensor 21 can only move up and down under the constraint of the telescopic device 100, and will not be circumferentially offset due to the reduction and enlargement of the variable diameter ring 6, so that the sensor 21 can always remain in the brachial artery measurement position of the arm, and accurately measure the brachial artery pulsation signal of the arm. The blood pressure measuring device provided in the embodiment of the present application has all the technical effects of the telescopic device 100 provided in the embodiment of the first aspect of the present application, which will not be repeated here.

[0062] In addition, the embodiments of the present application only focus on the structures of the telescopic device 100 and the blood pressure measuring device that are related to the improvements of the present application, and do not mean that the telescopic device 100 and the blood pressure measuring device do not have other structures. For example, the blood pressure measuring device also includes a cloth cover arranged on the inner side of the reducing ring 6, and the interior of the cloth cover forms an arm accommodating space, which will not be elaborated one by one here.

[0063] The above is only a preferred specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the present application.

Claims

1. A telescopic device for a blood pressure measuring device, characterized in that: include: A support structure (1) fixed to the reducing ring (6) of the blood pressure measuring device, the support structure (1) comprising a hollow channel (101), the hollow channel (101) providing a space for the reducing ring (6) to pass through; A first fixing structure (2) is arranged along a direction intersecting a first side edge of the supporting structure (1) located below the reducing ring (6), and two ends of the first fixing structure (2) are respectively used to fix a sensor (21) of the blood pressure measuring device; The telescopic structure (3) is symmetrically arranged with respect to the support structure (1); one side of the telescopic structure (3) is at least partially connected to the second side edge of the support structure (1) located above the diameter-changing ring (6); the other side is at least partially fixedly connected to the arm tube (5) of the blood pressure measuring device; the telescopic structure (3) is used to provide a moving space for the support structure (1) to move in a vertical direction when the diameter-changing ring (6) performs a diameter-changing movement, so as to enable the sensor (21) to move up and down.

2. The telescopic device according to claim 1, characterized in that: The telescopic structure (3) comprises: A first stretching member (301) constituting the other side of the telescopic structure (3) fixedly connected to the arm tube (5) of the blood pressure measuring device; A second stretching member (302) constituting one side of the telescopic structure (3) fixedly connected to the supporting structure (1); The first stretching member (301) and the second stretching member (302) are symmetrically fitted when no external force is applied, and the reducing ring (6) drives the first stretching member (301) and the second stretching member (302) to perform upward or downward bending movement when the reducing ring (6) performs diameter-changing movement.

3. The telescopic device according to claim 2, characterized in that: At least one of the first stretching member (301) and the second stretching member (302) is configured as an elastic structure; And / or, at least one of the first stretching member (301) and the second stretching member (302) is configured as a flexible plate.

4. The telescopic device according to claim 2, characterized in that: The two ends of the first stretching member (301) are rotatably connected to the two ends of the second stretching member (302) respectively, and when the first stretching member (301) and the second stretching member (302) are bent upward or downward, the two ends of the second stretching member (302) rotate relative to the two ends of the first stretching member (301).

5. The telescopic device according to claim 4, characterized in that: The two ends of the first stretching member (301) are respectively connected to the two ends of the second stretching member (302) through hinges (303); the first stretching member (301), the second stretching member (302) and the hinges (303) constitute a hinge mechanism.

6. The telescopic device according to any one of claims 2 to 5, characterized in that: The preset position of the second stretching member (302) is fixed at a position symmetrical to the support structure (1), and both sides of the preset position of the second stretching member (302) move upward or downward under the action of the external force generated when the reducing ring (6) performs a reducing movement.

7. The telescopic device according to claim 6, characterized in that: The preset position of the first stretching member (301) is fixed to the arm tube (5) via a second fixing structure (4), and both sides of the preset position of the first stretching member (301) move upward or downward under the action of an external force generated when the reducing ring (6) performs a reducing movement.

8. The telescopic device according to any one of claims 1 to 5, characterized in that: The support structure (1) is configured as an arc-shaped plate or a plastic sheet. When the support structure (1) is configured as an arc-shaped plate, the bending angle of the arc-shaped plate matches the bending angle of the reducing ring (6) inserted therein.

9. The telescopic device according to any one of claims 1 to 5, characterized in that: The first fixing structure (2) is arranged vertically on the supporting structure (1), and a fixing position is respectively arranged at two ends of the first fixing structure (2), and the shape of the fixing position is adapted to the sensor (21).

10. A blood pressure measuring device, characterized in that: include: Arm tube (5); A diameter reducing ring (6) movably arranged in the arm tube (5); The telescopic device (100) described in any one of claims 1 to 9 provides a moving space for the diameter-changing movement of the diameter-changing ring (6).

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