Cuff fixing structure, cuff and sphygmomanometer

Abstract

The utility model relates to the technical field of blood pressure measuring equipment, in particular to a cuff fixing structure, a cuff and a sphygmomanometer. Comprising a pressing part, a clamping part, a limiting part and a connecting part. The clamping part is arranged at one end opposite to the pressing end of the pressing part, and the clamping part comprises a first clamping plate and a second clamping plate which are oppositely arranged; the pressing part controls opening and closing of the clamping part; the limiting part is arranged on the clamping part and comprises at least one limiting bulge; the connecting part is fixed on the cuff, the connecting part comprises at least one limiting through hole, and the connecting part is fixed on the limiting bulge through the limiting through hole. According to the utility model, the cuff is fixedly connected with the first clamping plate and the second clamping plate in the clamping part by matching the limiting bulge in the limiting part arranged on the clamping part with the limiting through hole in the connecting part, so that the aim of fixing the cuff on the first clamping plate and the second clamping plate is fulfilled.

Description

Technical Field

[0001] The utility model relates to the technical field of blood pressure measuring equipment, in particular to a cuff fixing structure, a cuff and a sphygmomanometer. Background Art

[0002] When blood flows in blood vessels, the lateral pressure on the blood vessel wall is called blood pressure. Blood pressure usually refers to arterial blood pressure or systemic blood pressure, which is an important vital sign. Blood pressure measurement is the main means of evaluating blood pressure levels, diagnosing hypertension, and observing the efficacy of antihypertensive treatment. It plays an important role in indicating the health status of the human body.

[0003] In the relevant blood pressure measurement equipment, the cuff is a part of the structure used to connect to the human body. It is generally fixed on the upper arm of the subject and is used to collect relevant data. There are many types of cuffs, including card type, soft belt type, barrel type and clip type. The clip-on cuff is one of the many cuffs in the field of sphygmomanometers. Specifically, the clip-on cuff is connected to a clip, fixed to the upper arm by opening and closing the clip, and then gently glued with Velcro to complete the fixation. The other end of the cuff is connected to the sphygmomanometer body through a pipeline, and the blood pressure test can be started. Cuff sphygmomanometers are also increasingly favored by users due to their more convenient operation characteristics.

[0004] However, in the related art, since the connection structure between the cuff and the clamp plate of the clip is relatively loose, the cuff in the cuff sphygmomanometer is not firmly fixed, which is inconvenient to use and affects the accuracy of the blood pressure measurement results. Utility Model Content

[0005] In view of this, the utility model provides a cuff fixing structure, which at least partially solves the problem of a loose connection structure between the cuff and the clamping plate of the clip in the prior art.

[0006] According to one aspect of the utility model, a cuff fixing structure is provided, comprising:

[0007] The pressing part comprises a first pressing plate and a second pressing plate which are arranged opposite to each other;

[0008] The clamping part is arranged at an end opposite to the pressing end of the pressing part, and the clamping part includes a first clamping plate and a second clamping plate arranged opposite to each other; the pressing part controls the opening and closing of the clamping part;

[0009] A limiting portion, disposed on the clamping portion, the limiting portion comprising at least one limiting protrusion;

[0010] The connecting part is fixed on the cuff, and the connecting part includes at least one limiting through hole, the shape of the limiting through hole is adapted to the shape of the limiting protrusion, and the connecting part is fixed on the limiting protrusion through the limiting through hole.

[0011] Furthermore, the first pressing plate and the second pressing plate are connected via an elastic structure, and the first pressing plate and the second pressing plate are controlled to open and close around the elastic structure by applying pressures towards each other to the first pressing plate and the second pressing plate.

[0012] Furthermore, the elastic structure is connected to the clamping portion, and the first clamping plate and the second clamping plate are controlled to open and close around the elastic structure by applying opposite pressures to the pressing portion.

[0013] Furthermore, an upper clamping portion and a lower clamping portion are symmetrically arranged on the first clamping plate and the second clamping plate, respectively, and the limiting portion is arranged on the upper clamping portion.

[0014] Furthermore, the upper clamping portion includes a first clamping through hole and a second clamping through hole, the first clamping through hole is connected to the limiting portion, and the second clamping through hole is arranged on one side of the first clamping through hole.

[0015] Further, the number of the limiting protrusions matches that of the first card-connecting through holes, and the limiting protrusions are arranged along at least one side of the first card-connecting through holes.

[0016] Furthermore, the inner surface of the upper clamping portion is provided with at least one connecting protrusion, and the elastic structure is connected to the clamping portion via the connecting protrusion.

[0017] Furthermore, it also includes:

[0018] The covering panel is clamped and fixed to the pressing portion and the upper clamping portion.

[0019] Furthermore, the inner surface of the cover panel is provided with first clamping protrusions and second clamping protrusions, the number and shape of the first clamping protrusions match the first clamping through holes, and the number and shape of the second clamping protrusions match the second clamping through holes.

[0020] As a second aspect of the utility model, a cuff is also provided, comprising the above-mentioned cuff fixing structure.

[0021] As a third aspect of the utility model, a sphygmomanometer is also provided, comprising: a sphygmomanometer body, and the above-mentioned cuff.

[0022] The technical solution of the utility model has at least the following beneficial effects:

[0023] The utility model provides a clamping part on the cuff fixing structure, and provides a limiting through hole on the cuff, and cooperates with the limiting through hole through the limiting protrusion provided on the clamping part, so that the cuff is fixedly connected with the first clamping plate and the second clamping plate in the clamping part, thereby achieving the fixation of the cuff with the first clamping plate and the second clamping plate. Furthermore, the limiting through hole will cooperate with the limiting protrusion to achieve further limiting of the cuff, further enhance the fixing firmness of the cuff in the cuff sphygmomanometer, improve the convenience of use, and improve the accuracy of the blood pressure measurement result. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 This is a schematic diagram of the overall structure of a cuff fixing structure in one embodiment of the present application;

[0026] Figure 2 This is a schematic diagram of the exploded structure of a cuff fixing structure in another embodiment of the present application;

[0027] Figure 3 This is a schematic diagram of the exploded structure of a cuff fixing structure in another embodiment of the present application;

[0028] Figure 4 This is a schematic structural diagram of a first clamping plate in another embodiment of the present application;

[0029] Figure 5 This is a schematic structural diagram of a first panel in another embodiment of the present application;

[0030] Figure 6 This is a schematic diagram of the connection structure between the rotating shaft assembly and the torsion spring in another embodiment of the present application;

[0031] Figure 7 This is a schematic diagram of the cooperation structure between the first panel and the first clamping plate in another embodiment of the present application;

[0032] Figure 8 This is a schematic diagram of a reeling structure of a cuff fixing structure (a first pressing plate is disposed near any non-connected edge of a first connecting plate) in another embodiment of the present application;

[0033] Fig. 9 This is a schematic diagram of the structure in which a clip-on cuff is stored in a sphygmomanometer body in another embodiment of the present application;

[0034] Fig.10This is a structural schematic diagram of a cuff fixing structure in another embodiment of the present application.

[0035] Reference numerals

[0036] 1. Clamping part; 11. First clamping plate; 110. Limiting part; 1101. Limiting protrusion; 1011. First clamping through hole; 1012. Second clamping through hole; 1013. Connecting protrusion; 114. First accommodating groove; 115. Second accommodating groove; 12. Second clamping plate; 101. Upper clamping part; 102. Lower clamping part; 2. Pressing part; 21. First pressing plate; 210. Limiting baffle; 2 2. Second pressing plate; 3. Connecting part; 30. Limiting through hole; 4. Elastic structure; 40. Torsion spring; 41. Rotating shaft sleeve; 42. Locking bolt; 43. Locking nut; 5. Covering panel; 51. First clamping protrusion; 52. Second clamping protrusion; 521. Clamping hook; 522. Limiting strip; 523. Baffle clamping cavity; 6. Limiting step; 70. Blood pressure meter body; 71. Storage cavity; 72. Cuff. DETAILED DESCRIPTION

[0037] The embodiments of the utility model are described in detail below with reference to the accompanying drawings.

[0038] It should be noted that the following embodiments and features in the embodiments may be combined with each other in the absence of conflict; and, based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in the field without making any creative work are within the scope of protection of the present disclosure.

[0039] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein may be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present disclosure, it should be understood by those skilled in the art that an aspect described herein may be implemented independently of any other aspect, and two or more of these aspects may be combined in various ways. For example, any number of aspects described herein may be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein may be used to implement this device and / or practice this method.

[0040] As an embodiment of the present utility model, Figures 1 to 6 As shown, a cuff fixing structure is provided, comprising: a pressing portion 2, a clamping portion 1, a limiting portion 110 and a connecting portion 3.

[0041] The pressing portion 2 includes a first pressing plate 21 and a second pressing plate 22 that are arranged opposite to each other. The clamping portion 1 is arranged at an end opposite to the pressing end of the pressing portion 2, and the clamping portion 1 includes a first clamping plate 11 and a second clamping plate 12 that are arranged opposite to each other. The first pressing plate 21 and the second pressing plate 22 are connected by an elastic structure 4, and the first clamping plate 11 and the second clamping plate 12 are controlled to open and close around the elastic structure 4 by the pressure applied to the first pressing plate 21 and the second pressing plate 22.

[0042] An upper clamping portion 101 and a lower clamping portion 102 are symmetrically disposed on the first clamping plate 11 and the second clamping plate 12 , respectively.

[0043] Specifically, the inner surface of the upper clamping part 101 is provided with at least one connecting protrusion 1013, and the elastic structure 4 is connected to the clamping part 1 through the connecting protrusion 1013. The first clamping plate 11 and the second clamping plate 12 are controlled to open and close around the elastic structure 4 by the opposite pressure applied to the pressing part 2.

[0044] The upper clamping portion 101 in this embodiment is the partial structure of the first clamping plate 11 and the second clamping plate 12 close to the pressing portion 2, and this partial structure is used to be covered by the covering panel 5; the lower clamping portion 102 is the partial structure of the first clamping plate 11 and the second clamping plate 12 away from the pressing portion 2, and this partial structure is used to connect the cuff 72.

[0045] The limiting portion 110 is disposed on the upper clamping portion 101. The limiting portion 110 includes at least one limiting protrusion 1101.

[0046] The connecting part 3 is fixed on the cuff 72, and the connecting part 3 includes at least one limiting through hole 30, and the shape of the limiting through hole 30 is adapted to the shape of the limiting protrusion 1101. The connecting part 3 is fixed on the limiting protrusion 1101 through the limiting through hole 30. For example, since the shape of the limiting protrusion 1101 is adapted to the shape of the limiting through hole 30, the limiting protrusion 1101 is clamped in the limiting through hole 30, so that the connecting part 3 is fixed on the limiting part 110. Through the above arrangement, the cuff 72 can be firmly fixed on the cuff fixing structure to ensure that the cuff will not fall off during use.

[0047] like Fig.10 As shown, the cuff 72 is a double-layer structure, and is sleeved on the first clamping plate 11. For example, when the cuff 72 is sleeved on the first clamping plate 11, the first clamping plate 11 is located between the two layers of the cuff.

[0048] In another embodiment, the connecting portion 3 is a sheet-like structure, and the limiting through hole 30 is provided on the connecting portion 3. In this embodiment, the side of the cuff 72 close to the connecting portion 3 can be connected to the connecting portion 3 by sewing, gluing, etc., and this embodiment does not limit the connection method between the connecting portion 3 and the cuff 72.

[0049] Specifically, the connection part 3 may be a thin sheet made of polypropylene, and the shape of the connection part 3 may be rectangular, trapezoidal, etc., and this embodiment does not limit the shape of the connection part 3. In this embodiment, the shapes of the limiting through hole 30 and the limiting protrusion 1101 are both rectangular, and the sizes of the limiting through hole 30 and the limiting protrusion 1101 are also adapted to each other, so that the limiting through hole 30 can be smoothly sleeved on the outside of the limiting protrusion 1101. Since the shapes and sizes of the limiting through hole 30 and the limiting protrusion 1101 are adapted, the limiting protrusion 1101 limits the movement of the connection part 3, avoids the shaking of the connection part 3, and enables the cuff 72 to be firmly fixed on the cuff fixing structure, ensuring that the cuff will not fall off during use.

[0050] like Figure 4 As shown, in order to further avoid the shaking of the connecting part 3, a structure in which multiple limiting through holes 30 cooperate with the limiting protrusions 1101 can be set. The structure formed by the multiple limiting through holes 30 and the limiting protrusions 1101 can be arranged in a straight line, circle, polygon, etc. This embodiment does not limit the arrangement method.

[0051] In this embodiment, the cuff 72 is fixed to the first clamping plate 11 and the second clamping plate 12 by the cooperation of the limiting protrusion 1101 and the limiting through hole 30 provided on the connecting portion 3, so as to achieve the purpose of fixing the cuff 72 on the first clamping plate 11 and the second clamping plate 12. Further, by setting the limiting through hole 30 and the limiting protrusion 1101 to be mutually adapted in shape and size for limiting cooperation, the cuff 72 is further limited, the fixing firmness between the cuff 72 and the cuff fixing structure is further enhanced, and the convenience of use is improved.

[0052] In another embodiment of the present disclosure, the upper clamping portion 101 includes a first card-connecting through hole 1011 and a second card-connecting through hole 1012, the first card-connecting through hole 1011 is connected to the limiting portion 110, and the second card-connecting through hole 1012 is arranged on one side of the first card-connecting through hole 1011. The number of limiting protrusions 1101 matches that of the first card-connecting through holes 1011, and the limiting protrusions 1101 are arranged along at least one side of the first card-connecting through hole 1011.

[0053] Furthermore, the cuff fixing structure also includes: a covering panel 5.

[0054] The cover panel 5 is snap-fitted and fixed to the pressing portion 2 and the upper clamping portion 101. The inner surface of the cover panel 5 is provided with a first snap-fitting protrusion 51 and a second snap-fitting protrusion 52. The number and shape of the first snap-fitting protrusion 51 match the first snap-fitting through hole 1011, and the number and shape of the second snap-fitting protrusion 52 match the second snap-fitting through hole 1012. In this embodiment, the cover panel 5 is snap-fitted and fixed to the upper clamping portion 101 by providing a snap-fitting fit between the first snap-fitting protrusion 51 and the first snap-fitting through hole 1011, and a snap-fitting fit between the second snap-fitting protrusion 52 and the second snap-fitting through hole 1012.

[0055] like Figure 2 and Figure 5 As shown, in another embodiment of the present disclosure, the cover panel 5 is clamped and fixed on the outer side of the upper clamping portion 101 , and the connecting portion 3 is clamped between the outer side of the upper clamping portion 101 and the inner side of the cover panel 5 .

[0056] like Figure 1 As shown, the shape of the covering panel 5 is adapted to the shape of the upper clamping portion 101, thereby the covering panel 5 and the upper clamping portion 101 can be more closely fitted together, thereby making the cuff 72 have a larger contact area with the covering panel 5 and the upper clamping portion 101. In this embodiment, through the snap-fitting arrangement of the covering panel 5 and the upper clamping portion 101, the covering panel 5 and the upper clamping portion 101 provide a greater clamping force to the cuff 72, thereby preventing the cuff 72 from shaking.

[0057] Further, such as Figure 4 and Figure 5 As shown, the first snap-in hole 1011 and the second snap-in hole 1012 are set as rectangular hole structures, which are used to snap-in and connect with the first snap-in protrusion 51 and the second snap-in protrusion 52 on the cover panel 5. In order to improve the firmness between the snap-in hole and the snap-in protrusion, the second snap-in protrusion 52 can be set as follows: Figure 5 The style of the snap hook 521 shown. At the same time, in order to facilitate the snap hook 521 to smoothly penetrate into the snap through hole, a guiding inclined surface is provided on the snap through hole. Through the above arrangement, during the installation process, the snap hook 521 is guided into the snap through hole by the guiding inclined surface.

[0058] Further, such as Figure 7 As shown, at least one limiting baffle 210 is further provided on the first pressing plate 21 ; a baffle clamping cavity 523 is correspondingly provided on the cover panel 5 to cooperate with the limiting baffle 210 .

[0059] Specifically, the baffle engaging cavity 523 is provided on the inner side surface of the cover panel 5 , and the protruding portion of the limiting baffle 210 is accommodated in the baffle engaging cavity 523 , so as to limit the engaging hook 521 from moving toward one side of the disengaging direction.

[0060] During the actual installation process, the protruding portion of the limit baffle 210 will gradually insert into the corresponding baffle engaging cavity 523. After the installation is completed, the engaging hook 521 is completely engaged in the corresponding second engaging through hole 1012, and the protruding portion of the limit baffle 210 will also be engaged in the corresponding baffle engaging cavity 523. At the same time, in order to prevent the engaging hook 521 from coming out, the distance between the engaging surface of the protruding portion of the limit baffle 210 and the engaging surface of the second engaging through hole 1012 into which the engaging hook 521 is inserted (i.e., L2) is greater than or equal to the distance between the engaging surface of the corresponding baffle engaging cavity 523 and the engaging surface of the engaging hook 521 (i.e., L1). Figure 7 As shown, L1≥L2. Thus, the elastic deformation between the corresponding components provides a restraining force to prevent the locking hook 521 from falling out.

[0061] In the embodiment of the present disclosure, the cover panel 5 is fixedly connected to the pressing portion 2 and the upper clamping portion 101, and the connecting portion 3 and the limiting portion 110 are clamped therein, thereby playing a protective role and further preventing the connecting portion 3 from falling off the cuff fixing structure.

[0062] As another embodiment of the present utility model, Figure 4 As shown, the first clamping plate 11 further includes a first accommodating groove 114 and a second accommodating groove 115 .

[0063] The first accommodating groove 114 is provided on the outer surface of the first clamping plate 11 in the area where the connecting portion 3 is placed. The second accommodating groove 115 is provided on the outer surface of the first clamping plate 11, the area of ​​the second accommodating groove 115 is larger than the area of ​​the first accommodating groove 114, and the area where the first accommodating groove 114 is located intersects with the area where the second accommodating groove 115 is located. The depth of the first accommodating groove 114 is greater than the depth of the second accommodating groove 115.

[0064] In order to ensure the flatness of the surface of the cuff 72 so that there is more contact area between the cuff 72 and the first clamping plate 11 and the cover panel 5, a first accommodating groove 114 is provided for accommodating the connecting portion 3, so that the upper surface of the connecting portion 3 after being placed in the first accommodating groove 114 can be used to be flush with the upper surface of the first clamping plate 11.

[0065] In addition, in order to further ensure the connection firmness of the cuff 72, a double-sided adhesive tape is also provided in the second receiving groove 115 to connect the cuff 72 at the corresponding position with the bottom surface of the second receiving groove 115. At the same time, in order to make the cuff 72 have a better contact effect with the double-sided adhesive tape to ensure the adhesion, the depth of the second receiving groove 115 is made smaller than the thickness of the double-sided adhesive tape. Thus, when the cuff 72 is connected to the double-sided adhesive tape, there is a certain squeezing force between the cuff 72 and the double-sided adhesive tape.

[0066] In addition, in order to prevent the cuff 72 from shaking greatly, a limiting step 6 is provided on the first clamping plate 11 and the second clamping plate 12. The limiting step 6 is used to abut against one end of the cuff 72 to prevent it from shaking.

[0067] As another possible embodiment of the present invention, the pressing portion 2 is disposed near any non-connected edge of the clamping portion 1. For example, the first pressing plate 21 is disposed near any non-connected edge of the first clamping plate 11, and the second pressing plate 22 is disposed near any non-connected edge of the second clamping plate 12.

[0068] Specifically, Figure 8 As shown, the first clamping plate 11 has four ends (ends shown as A, B, C and D in the figure), wherein the end B is connected to the first pressing plate 21, and the remaining end C and end D are non-connected ends in this embodiment.

[0069] Usually, the cuff 72 is used together with the sphygmomanometer body 70, and after use, the cuff 72 and the sphygmomanometer body 70 are usually separated and stored separately. Figure 8 and Fig. 9 As shown, in order to store the cuff 72 together with the sphygmomanometer body 70, a corresponding storage cavity 71 is provided on the sphygmomanometer body 70 for storing the cuff 72. The storage cavity 71 is usually a groove with an opening upward, and the cuff 72 can be inserted into the storage cavity 71 after being rolled up. For the clip-on cuff 72, it has a pressing portion 2 protruding outward. In the process of inserting the rolled-up clip-on cuff 72 into the storage cavity 71, the pressing portion 2 (that is, the first pressing plate 21 and the second pressing plate 22) will interfere with the outer wall of the storage cavity 71, thereby making it difficult to smoothly insert the clip-on cuff 72 into the storage cavity 71.

[0070] Correspondingly, such as Fig. 9 As shown, in order to avoid mutual interference between the pressing portion 2 and the outer wall of the storage cavity 71, in this embodiment, the pressing portion 2 is arranged near any non-connected edge of the clamping portion 1. Usually, the pressing portion 2 is arranged near the upper end of the non-connected edge, and the upper end of the non-connected edge is the edge away from the bottom of the storage cavity 71 after the clip-type cuff 72 is placed in the storage cavity 71.

[0071] In this way, the outwardly protruding pressing portion 2 can be kept away from the receiving cavity 71 , thereby avoiding mutual interference and blocking between the pressing portion 2 and the outer side wall of the receiving cavity 71 .

[0072] As another possible embodiment of the present invention, Figures 1 to 6As shown, the first clamping plate 11 and the second clamping plate 12 have the same structure and are rotatably connected via a torsion spring 40 , a rotating shaft sleeve 41 , a locking bolt 42 and a locking nut 43 .

[0073] The shaft sleeve 41 is rotatably connected between the first clamping plate 11 and the second clamping plate 12. The shaft sleeve 41 can be made of Teflon.

[0074] The locking bolt 42 is rotatably inserted into the rotating shaft sleeve 41 . The locking nut 43 is connected to the locking bolt 42 .

[0075] The head of the locking bolt 42 and the locking nut 43 can form an axial limit for the rotating shaft sleeve 41 to ensure that the rotating shaft assembly can be set at a corresponding position.

[0076] The torsion spring 40 is sleeved on the rotating shaft assembly, and two connecting ends of the torsion spring 40 are respectively fixedly connected to the first clamping plate 11 and the second clamping plate 12 to keep the first clamping plate 11 and the second clamping plate 12 in a closed state.

[0077] The above are only specific implementations of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A cuff fixing structure, characterized in that: include: A pressing portion (2) comprising a first pressing plate (21) and a second pressing plate (22) arranged opposite to each other; The clamping portion (1) is arranged at an end opposite to the pressing end of the pressing portion (2), and the clamping portion (1) comprises a first clamping plate (11) and a second clamping plate (12) arranged opposite to each other; the pressing portion (2) controls the opening and closing of the clamping portion (1); A limiting portion (110) is arranged on the clamping portion (1), and the limiting portion (110) comprises at least one limiting protrusion (1101); A connecting portion (3) is fixed on the cuff (72), the connecting portion (3) comprising at least one limiting through hole (30), the shape of the limiting through hole (30) being compatible with the shape of the limiting protrusion (1101), and the connecting portion (3) is fixed on the limiting protrusion (1101) via the limiting through hole (30).

2. The cuff fixing structure according to claim 1, characterized in that: The first pressing plate (21) and the second pressing plate (22) are connected via an elastic structure (4), and the first pressing plate (21) and the second pressing plate (22) are controlled to open and close around the elastic structure (4) by applying pressure in opposite directions to the first pressing plate (21) and the second pressing plate (22).

3. The cuff fixing structure according to claim 2, characterized in that: The elastic structure (4) is connected to the clamping portion (1), and the first clamping plate (11) and the second clamping plate (12) are controlled to open and close around the elastic structure (4) by applying opposite pressure to the pressing portion (2).

4. The cuff fixing structure according to claim 2, characterized in that: An upper clamping portion (101) and a lower clamping portion (102) are symmetrically arranged on the first clamping plate (11) and the second clamping plate (12), respectively, and the limiting portion (110) is arranged on the upper clamping portion (101).

5. The cuff fixing structure according to claim 4, characterized in that: The upper clamping portion (101) comprises a first clamping through hole (1011) and a second clamping through hole (1012), wherein the first clamping through hole (1011) is connected to the limiting portion (110), and the second clamping through hole (1012) is arranged on one side of the first clamping through hole (1011).

6. The cuff fixing structure according to claim 5, characterized in that: The number of the limiting protrusions (1101) matches that of the first latching holes (1011), and the limiting protrusions (1101) are arranged along at least one side of the first latching holes (1011).

7. The cuff fixing structure according to claim 4, characterized in that: The inner surface of the upper clamping portion (101) is provided with at least one connecting protrusion (1013), and the elastic structure (4) is connected to the clamping portion (1) via the connecting protrusion (1013).

8. The cuff fixing structure according to claim 5, characterized in that: Also includes: A covering panel (5) is clamped and fixed to the pressing portion (2) and the upper clamping portion (101).

9. The cuff fixing structure according to claim 8, characterized in that: The inner surface of the cover panel (5) is provided with a first snap-fitting protrusion (51) and a second snap-fitting protrusion (52); the number and shape of the first snap-fitting protrusion (51) match the first snap-fitting through hole (1011), and the number and shape of the second snap-fitting protrusion (52) match the second snap-fitting through hole (1012).

10. A cuff, characterized in that: It comprises the cuff fixing structure as described in any one of claims 1 to 9.

11. A sphygmomanometer, characterized in that: include: A sphygmomanometer body, and a cuff as claimed in claim 10.

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