Telescopic device and blood pressure measuring device

Abstract

The utility model 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 utility model 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 field of medical device technology, specifically to telescopic devices and blood pressure measuring devices. Background Technology

[0002] This section provides only background information relevant to this disclosure and is not necessarily prior art.

[0003] In the field of blood pressure measurement devices, there is a type of blood pressure measurement device that uses the Korotkoff sound measurement principle. It uses two piezoelectric sensors attached to the surface of an air bladder, and uses a cuff to tighten and wrap around the arm, so that the piezoelectric sensors are in close contact with the brachial artery in the arm, thereby detecting the signal of blood flow.

[0004] The inventors discovered that the blood pressure measuring device has a variable diameter ring that can adapt well to the arm circumference of different users. However, with this structure, as the effective measuring length of the variable diameter ring changes, the rotation angle and diameter of the variable diameter ring also change. Since the air bladder is fixed on the variable diameter ring, the position and angle of the sensor attached to the air bladder will change, causing the sensor to not fit well on the brachial artery measuring position of the arm, resulting in inaccurate blood pressure measurement. Utility Model Content

[0005] The purpose of this application is to at least solve the problem of inaccurate blood pressure measurements caused by changes in sensor position during blood pressure detection in existing blood pressure measuring devices. This purpose is achieved through the following technical solution:

[0006] The first aspect of this application provides a telescopic device for a blood pressure measuring device, comprising: a support structure, a variable diameter ring fixed to the blood pressure measuring device, the support structure including a hollow channel providing space for the variable diameter ring to pass through; a first fixing structure disposed along a direction intersecting a first side of the support structure located below the variable diameter ring, the two ends of the first fixing structure being used to fix sensors of the blood pressure measuring device; and a telescopic structure symmetrically disposed to the support structure, one side of the telescopic structure being at least partially connected to a second side of the support structure located above the variable diameter ring, and the other side being at least partially fixedly connected to the arm of the blood pressure measuring device, the telescopic structure being used to provide space for the support structure to move vertically when the variable diameter ring undergoes a diameter change, so that the sensor can move up and down.

[0007] Those skilled in the art will understand that this application proposes fixing the sensor to a telescopic device, with the variable-diameter ring moving through the hollow channel of the support structure. Regardless of how the diameter of the variable-diameter ring changes, the sensor, constrained by the telescopic device, can only move up and down, and will not experience circumferential displacement due to the shrinking or enlarging of the variable-diameter ring. This ensures that the sensor remains in the brachial artery measurement position in the arm, achieving the purpose of accurately measuring blood flow in the brachial artery. Simultaneously, the cooperation between the telescopic structure and the support structure provides space for the variable-diameter ring to move up and down, expanding the range of arm circumferences it can accommodate.

[0008] In some embodiments, the telescopic structure includes: a first tension member, forming the other side of the telescopic structure fixedly connected to the arm of the blood pressure measuring device; and a second tension member, forming one side of the telescopic structure fixedly connected to the support structure. The first tension member and the second tension member are symmetrically fitted when no external force is applied, and the variable diameter ring drives the first tension member and the second tension member to perform upward or downward bending movements when the variable diameter ring changes diameter.

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

[0010] In some embodiments, the two ends of the first tension member are rotatably connected to the two ends of the second tension member, and during the upward or downward bending of the first and second tension members, the two ends of the second tension member rotate relative to the two ends of the first tension member.

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

[0012] In some embodiments, the preset portion of the second tension member is fixed at a position symmetrical to the support structure, and the two sides of the preset portion of the second tension member move upward or downward under the action of the external force generated when the variable diameter ring changes diameter.

[0013] In some embodiments, a preset portion of the first tension member is fixed to the boom cylinder by a second fixing structure, and the two sides of the preset portion of the first tension member move upward or downward under the action of the external force generated when the variable diameter ring changes diameter.

[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 variable diameter ring inserted inside it.

[0015] In some embodiments, the first fixing structure is vertically disposed on the support structure, and a fixing position is provided at each end of the first fixing structure, the shape of the fixing position being adapted to the sensor.

[0016] The second aspect of this application provides a blood pressure measuring device, including: an arm cylinder; a variable diameter coil movably disposed within the arm cylinder; and a telescopic device of the first aspect of this application, providing space for the variable diameter coil to change diameter. Attached Figure Description

[0017] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0018] Figure 1 This is a schematic diagram of the structure of a blood pressure measuring device according to an embodiment of this application;

[0019] Figure 2 for Figure 1 A schematic diagram of the assembly structure of the telescopic device, support structure and variable diameter ring in the blood pressure measuring device shown.

[0020] Figure 3 for Figure 2 The diagram shows the structure of the telescopic device in the blood pressure measuring device.

[0021] The reference numerals in the attached figures are as follows:

[0022] 100. Telescopic device; 1. Support structure; 101. Hollow channel; 2. First fixed structure; 21. Sensor; 3. Telescopic structure; 301. First tension member; 302. Second tension member; 303. Hinge; 4. Second fixed structure; 5. Arm cylinder; 6. Variable diameter ring. Detailed Implementation

[0023] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While 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 to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the disclosure to those skilled in the art. It should be noted that the description of the telescopic device of this application using a blood pressure measuring device is merely a preferred embodiment and is not intended to limit the application scope of the telescopic device. The telescopic device of this application can also be used in other medical devices, and such adjustments do not depart from the protection scope of the telescopic device of this application.

[0024] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also mean including the plural forms. The terms “comprising,” “including,” and “having” are inclusive and therefore indicate the presence of the stated features, elements, and / or components, but do not exclude the presence or addition of one or more other features, elements, components, and / or combinations thereof.

[0025] Although terms such as "first," "second," etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Furthermore, in the description of this application, unless otherwise expressly specified and limited, the terms "set up" and "connected" should be interpreted broadly; for example, they may refer to a fixed connection, a detachable connection, or an integral connection; they may refer to a direct connection or an indirect connection via an intermediate medium. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0026] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "end," "length," "inner," "outer," etc. Such spatial relative terms are intended to include different orientations of the mechanism in use or operation, in addition to those depicted in the figure. For example, if the mechanism in the figure is flipped, an element described as "below other elements or features" or "below other elements or features" would subsequently be oriented as "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The mechanism may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0027] like Figures 1 to 3As shown, this application embodiment 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 including a hollow channel 101, the hollow channel 101 providing space for the variable diameter ring 6 to pass through; a first fixing structure 2, arranged along a direction intersecting the first side of the support structure 1 located below the variable diameter ring 6, the two ends of the first fixing structure 2 being used to fix the sensor 21 of the blood pressure measuring device respectively; a telescopic structure 3, symmetrically arranged with the support structure 1, one side of the telescopic structure 3 being at least partially connected to the second side of the support structure 1 located above the variable diameter ring 6, and the other side being at least partially fixedly connected to the arm cylinder 5 of the blood pressure measuring device, the telescopic structure 3 being used to provide moving space for the support structure 1 to move in the vertical direction when the variable diameter ring 6 undergoes a diameter change movement, so that the sensor 21 can move up and down.

[0028] In this embodiment, the present application proposes fixing the sensor 21 to the telescopic device 100. The variable diameter ring moves 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 shift circumferentially due to the shrinking or enlarging of the variable diameter ring 6. This allows the sensor 21 to always remain at the brachial artery measurement position in the arm, enabling accurate measurement of the brachial artery pulsation signal. At the same time, through the cooperation of the telescopic structure 3 and the support structure 1, the variable diameter ring 6 can be provided with space for up and down movement, thereby expanding the range of the variable diameter ring 6 to adapt to different arm circumferences.

[0029] Specifically, the arm cylinder 5 of the blood pressure measuring device is equipped with a scalable variable diameter ring 6. One end of the variable diameter ring 6 is fixed, while the other end floats. A drive mechanism pulls the other end of the variable diameter ring 6 to move it, thereby scaling the ring to cover different arm circumferences for blood pressure measurement. The telescopic device 100 provides space for adjusting the effective length of the variable diameter ring 6 for covering the arm for blood pressure measurement. As the other end of the variable diameter ring 6 moves, its diameter changes accordingly to adapt to different arm circumferences. In other words, the effective length of the variable diameter ring 6 covering the user's upper arm is 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 that contacts the hollow channel 101 is the top of the variable diameter ring 6. When the blood pressure measuring device is working, the driving mechanism that meshes with one end of the variable diameter ring 6 drives that end of the variable diameter ring 6 to stretch outward. The variable diameter ring 6 slides downward through the hollow channel 101, and the part of the variable diameter ring 6 that meshes with the driving mechanism moves upward continuously. The diameter of the variable diameter ring 6 gradually decreases. 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. The sensor 21 is fixed at both ends of the first fixing structure 2 that is intersected 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 experience circumferential displacement.

[0031] As the support structure 1 moves up and down, it pulls the telescopic structure 3 to extend and retract, causing a change in the distance between the support structure 1 and the second fixed structure 4. After the blood pressure measuring device finishes its measurement, the variable diameter ring 6 slowly returns to its enlarged state, and the telescopic structure 3 springs back, pulling the sensor 21 back to its original position, ready for the next measurement. During this process, the cooperation between the telescopic structure 3 and the support structure 1 satisfies the diameter change requirement of the variable diameter ring 6 without causing the sensor 21 to deviate circumferentially and thus avoid failing to fit the brachial artery measurement position on the arm.

[0032] It should be noted that the embodiments of this application do not limit the specific structure of the telescopic structure 3 and the support structure 1, because the improvement of this application lies in providing the activity 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 constraining the sensor 21 to undergo circumferential displacement. As for the specific structure of the telescopic structure 3 and the support structure 1, there are various embodiments. For example, the telescopic structure 3 can be set as an elastic structure, a flexible structure, a linkage structure, or a hinge structure, etc. These embodiments all fall within the protection scope of the telescopic structure 3 of this application. As for other embodiments of the telescopic structure 3, they will not be described one by one here.

[0033] The specific structures of the telescopic structure 3 and the support structure 1 in the embodiments of this application will be described in detail below.

[0034] like Figures 1 to 3 As shown, in some embodiments, the telescopic structure 3 includes: a first tension member 301, which forms the other side of the telescopic structure 3 that is fixedly connected to the arm cylinder 5 of the blood pressure measuring device; and a second tension member 302, which forms one side of the telescopic structure 3 that is fixedly connected to the support structure 1. The first tension member 301 and the second tension member 302 are symmetrically fitted when there is no external force, and when the diameter changing ring 6 changes diameter, it drives the first tension member 301 and the second tension member 302 to perform upward or downward bending movements.

[0035] In this embodiment, the first tension member 301 and the second tension member 302 include flexible rods or flexible sheets. During the radial contraction of the variable diameter ring 6, the first tension member 301 and the second tension member 302 undergo elastic deformation and provide space for the radial expansion and contraction of the variable diameter ring 6 by bending up and down. When the variable diameter ring 6 returns to its original state, the first tension member 301 and the second tension 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 configured to consist of two tension members, which can increase the telescopic space of the telescopic structure 3, so that the variable diameter ring 6 has enough telescopic space to adapt to arms with different arm circumferences, thereby improving the applicability of the blood pressure measuring device to users with different arm circumferences.

[0037] Meanwhile, the telescopic structure 3 is designed to consist of two tension members, which can improve the tensile strength of the telescopic structure 3 and reduce the risk of the telescopic structure 3 being damaged due to excessive stress during the expansion and contraction of the variable diameter ring 6.

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

[0039] In this embodiment, by setting at least one of the first tension member 301 and the second tension member 302 as an elastic structure or a flexible member, the first tension member 301 and the second tension member 302 can provide room for the expansion and contraction of the variable diameter ring 6 through deformation, and can return to their original shape as the variable diameter ring 6 returns to its original shape, thereby improving the service life of the first tension member 301 and the second tension member 302.

[0040] Specifically, the first tension member 301 and the second tension member 302 can be configured as a plate-like structure, a sheet-like structure, a rod-like structure or a spring structure. These structures can provide space for movement through their own deformation and the expansion and contraction of the variable diameter ring 6.

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

[0042] In this embodiment, by rotatably connecting the two ends of the first tension member 301 to the two ends of the second tension member 302, the relative rotation of the first tension member 301 and the second tension member 302 provides room for the expansion and contraction of the variable diameter ring 6. Compared with the method of simply stretching the first tension member 301 and the second tension member 302 to cause deformation, the tensile force borne by the first tension member 301 and the second tension member 302 can be reduced, thereby improving the service life of the first tension member 301 and the second tension member 302.

[0043] like Figures 1 to 3 As shown, in some embodiments, the two ends of the first tension member 301 are respectively connected to the two ends of the second tension member 302 via hinges 303, and the first tension member 301, the second tension member 302 and the hinges 303 constitute a hinge mechanism.

[0044] In this embodiment, when the first tension member 301 and the second tension member 302 are configured as plate-like or sheet-like structures, the thickness of the first tension member 301 and the second tension member 302 is limited, making it impractical to provide a pivot or bushing on the first tension member 301 and the second tension member 302. Therefore, this application embodiment proposes two hinge pieces connecting the first tension member 301 and the second tension member 302 to the hinge 303, thereby achieving relative rotational movement between the first tension member 301 and the second tension member 302 without the need to provide a pivot or bushing on the first tension member 301 or the second tension member 302.

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

[0046] In this embodiment, the preset portion of the second tension member 302 is fixed at a position symmetrical to the support structure 1, which allows the second tension member 302 to be subjected to uniform force, reducing the possibility of damage to the second tension member 302 due to uneven force. Furthermore, the preset portion of the second tension member 302 includes the middle portion of the second tension member 302. In this case, both ends of the second tension member 302 are suspended, forming two free ends capable of vertical deformation. By setting both ends of the second tension member 302 to be able to move upwards or downwards, space is provided for the expansion and contraction of the variable diameter ring 6, thereby enabling the variable diameter ring 6 to perform normal expansion and contraction.

[0047] Furthermore, since the two ends of the first tension member 301 are rotatably connected to the two ends of the second tension member 302 respectively, in order to realize the relative circumferential movement between the first tension member 301 and the second tension member 302, the two ends of the second tension member 302 are designed 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 tension member 301 relative to the second tension member 302.

[0048] like Figures 1 to 3 As shown, in some embodiments, the preset part of the first tension member 301 is fixed to the arm cylinder 5 by the second fixing structure 4, and the two sides of the preset part of the first tension member 301 move upward or downward under the action of the external force generated when the diameter changing ring 6 changes diameter.

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

[0050] In addition, the preset part of the first tension member 301 is fixed to the second fixing structure 4, such as the middle part of the second tension member 302 being fixed to the second fixing structure 4. At this time, the two ends of the first tension member 301 are suspended and form two free ends that can deform up and down. By setting the two ends of the first tension member 301 to be able to move up or down, it can provide space for the expansion and contraction of the variable diameter ring 6, so that the variable diameter ring 6 can perform expansion and contraction normally.

[0051] Furthermore, the two ends of the first tension member 301 are rotatably connected to the two ends of the second tension member 302. In order to realize the relative circumferential movement between the first tension member 301 and the second tension member 302, the two ends of the first tension member 301 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 tension member 301 relative to the second tension 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 variable diameter ring 6 inserted inside it.

[0053] In this embodiment, by setting the support structure 1 as an arc plate with a bending angle that matches the bending angle of the variable diameter ring 6, the variable diameter ring 6 can smoothly move inside the arc plate, reducing the jamming and wear phenomenon of the variable diameter ring 6 during the movement, and improving the diameter changing effect of the variable diameter ring 6.

[0054] Specifically, the variable diameter ring 6 is configured as a circular ring structure distributed circumferentially, and the support structure 1 is set on the top of the variable diameter ring 6. The top of the variable diameter ring 6 passes through the hollow channel 101 inside the support structure 1, so that the top of the variable diameter ring 6 can shuttle inside the variable diameter ring 6 to achieve the purpose of changing the diameter.

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

[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 by long-term wear of the reducing ring 6, the plastic sheet can be removed from the metal plate and replaced with a new plastic sheet.

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

[0058] In this embodiment, the first fixing structure 2 is vertically disposed at the bottom of the support structure 1, and the two are configured as an integral structure. By setting the sensor 21 at the sensor 21 fixing position at both ends of the first fixing structure 2, the sensor 21 and the support structure 1 are relatively fixed in position relative to the horizontal direction when the support structure 1 drives the sensor 21 to move up and down through the first fixing structure 2, so as to avoid the sensor 21 from circumferentially shifting during the lifting and lowering of the support structure 1.

[0059] Furthermore, the first fixed structure 2 can also protect the sensor 21, reducing the possibility of the sensor 21 being squeezed or bent during the lifting and lowering process.

[0060] like Figure 1 and Figure 3 As shown, the second aspect of this application provides a blood pressure measuring device, including: an arm cylinder 5; a variable diameter coil 6, movably disposed within the arm cylinder 5; and a telescopic device 100 of the first aspect of this application, providing movement space for the variable diameter coil 6 to change diameter.

[0061] In this embodiment, the blood pressure measuring device, through the cooperation of the telescopic structure 3 and the support structure 1, provides vertical movement space for the variable diameter coil 6, thereby expanding the range of the variable diameter coil 6 to accommodate different arm circumferences. Furthermore, the sensor 21, constrained by the telescopic device 100, can only move vertically and will not experience circumferential displacement due to the shrinking or enlarging of the variable diameter coil 6. This ensures that the sensor 21 remains in the brachial artery measurement position in the arm, enabling accurate measurement of the brachial artery pulsation signal. The blood pressure measuring device provided in this embodiment possesses all the technical effects of the telescopic device 100 provided in the first aspect embodiment of this application, and will not be elaborated further here.

[0062] Furthermore, the embodiments of this application only focus on describing the structures of the telescopic device 100 and the blood pressure measuring device that are related to the improvements of this 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 sleeve disposed inside the variable diameter ring 6, and the inside of the cloth sleeve forms an arm-accommodating space, which will not be described in detail here.

[0063] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of protection of this application.

Claims

1. A telescopic device for use in a blood pressure measuring device, characterized in that, include: A support structure (1) is fixed to the variable diameter ring (6) of the blood pressure measuring device. The support structure (1) includes a hollow channel (101), which provides space for the variable diameter ring (6) to pass through. The first fixing structure (2) is arranged along the direction that intersects with the first side of the support structure (1) located below the variable diameter ring (6), and the two ends of the first fixing structure (2) are respectively used to fix the sensor (21) of the blood pressure measuring device; The telescopic structure (3) is 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) 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 the support structure (1) with a moving space in the vertical direction when the variable diameter ring (6) changes diameter, so that the sensor (21) can move up and down.

2. The telescopic device according to claim 1, characterized in that, The telescopic structure (3) includes: The first tension member (301) forms the other side of the telescopic structure (3) that is fixedly connected to the arm cylinder (5) of the blood pressure measuring device; The second tension member (302) forms one side of the telescopic structure (3) that is fixedly connected to the support structure (1); The first tension member (301) and the second tension member (302) are symmetrically fitted when no external force is applied. When the diameter-changing ring (6) changes diameter, it drives the first tension member (301) and the second tension member (302) to perform upward or downward bending movements.

3. The telescopic device according to claim 2, characterized in that, At least one of the first tension member (301) and the second tension member (302) is configured as an elastic structure; And / or, at least one of the first tension member (301) and the second tension 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 tension member (301) are rotatably connected to the two ends of the second tension member (302). During the process of the first tension member (301) and the second tension member (302) bending upward or downward, the two ends of the second tension member (302) rotate relative to the two ends of the first tension member (301).

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

6. The telescopic device according to any one of claims 2-5, characterized in that, The preset part of the second tension member (302) is fixed at a position symmetrical to the support structure (1), and the two sides of the preset part of the second tension member (302) move upward or downward under the action of the external force generated when the variable diameter ring (6) changes diameter.

7. The telescopic device according to claim 6, characterized in that, The preset part of the first tension member (301) is fixed to the arm cylinder (5) by the second fixing structure (4). The two sides of the preset part of the first tension member (301) move upward or downward under the action of the external force generated when the diameter changing ring (6) changes diameter.

8. The telescopic device according to any one of claims 1-5, 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 variable diameter ring (6) inserted inside it.

9. The telescopic device according to any one of claims 1-5, characterized in that, The first fixing structure (2) is vertically disposed on the support structure (1), and a fixing position is provided at each end of the first fixing structure (2), the shape of the fixing position being adapted to the sensor (21).

10. A blood pressure measuring device, characterized in that, include: boom (5); A variable diameter ring (6) is movably disposed inside the boom cylinder (5); The telescopic device (100) according to any one of claims 1 to 9 provides a moving space for the diameter-changing movement of the variable diameter ring (6).

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