Clamping and fixing device of wrist sphygmomanometer and wrist sphygmomanometer

Abstract

The utility model relates to the technical field of wrist sphygmomanometers, and discloses a clamping and fixing device of a wrist sphygmomanometer and the wrist sphygmomanometer. The clamping and fixing device is used for clamping and fixing a wrist strap of the wrist sphygmomanometer and comprises a lock rod, a lock seat and a fixing structure. The lock rod comprises a lock rod main body extending longitudinally; the lock seat is configured to be provided with a receiving groove suitable for receiving at least part of the lock rod body and the wrist strap, and the far end of the lock rod is coupled with the far end of the lock seat, so that the lock rod is rotatably connected to the lock seat; the securing structure is connected to at least a proximal end of one of the lock bracket or the lock bar. The clamping and fixing device has a locking state and an unlocking state. When the clamping and fixing device is in a locking state, the wrist strap is clamped and fixed by the lock rod main body and the lock seat, and the fixing structure enables the lock rod main body and the lock seat to be combined. According to the wrist sphygmomanometer provided with the clamping and fixing device, the wrist strap is reliably fixed and is not prone to slipping off.

Description

Technical Field

[0001] The present disclosure relates to the technical field of wrist blood pressure monitors, and in particular to a clamping and fixing device for a wrist blood pressure monitor and a wrist blood pressure monitor comprising the same. Background Art

[0002] Wrist blood pressure monitors are widely used in clinical practice due to their convenience. However, existing wrist blood pressure monitors often use adhesive bands to secure the wristbands. After repeated use, the adhesive bands can become damaged, causing them to become loose and easily slip off, affecting measurement results or even rendering them unusable. Utility Model Content

[0003] In order to solve the above technical problems, the present disclosure provides a clamping and fixing device for a wrist blood pressure monitor and a wrist blood pressure monitor including the same. The clamping and fixing device can clamp and fix a wristband placed therein, so that the wristband is reliably fixed and not easy to slip off.

[0004] In a first aspect, the present disclosure provides a clamping and fixing device for a wrist blood pressure monitor, which is used to clamp and fix the wristband of the wrist blood pressure monitor, and includes a locking rod, a locking seat, and a fixing structure. The locking rod includes a longitudinally extending locking rod body; the locking seat is configured to have a receiving slot suitable for receiving at least a portion of the locking rod body and the wristband, the distal end of the locking rod is coupled to the distal end of the locking seat, so that the locking rod is rotatably connected to the locking seat; and the fixing structure is connected to the proximal end of at least one of the locking seat or the locking rod. The clamping and fixing device has a locked state and an unlocked state. When the clamping and fixing device is in the locked state, at least a portion of the locking rod body is located in the receiving slot, and the fixing structure maintains this portion of the locking rod body in the receiving slot, thereby clamping and fixing the wristband between the locking rod body and the locking seat; when in the unlocked state, the proximal end of the locking rod can be moved away from the proximal end of the locking seat, so that the wristband between the locking rod body and the locking seat can be moved.

[0005] Specifically, the fixing structure is configured as a fixing ring that is rotatably connected to a proximal end of one of the lock seat or the lock rod, wherein when at least a portion of the lock rod body is located in the receiving groove, the fixing ring can be flipped and sleeved onto the other of the lock seat or the lock rod.

[0006] Specifically, the lock rod body comprises a circumferentially distributed large-diameter portion and a small-diameter portion. The receiving groove is configured as an arc-shaped groove adapted to receive the small-diameter portion. A retaining ring is rotatably connected to the proximal end of the lock base. The retaining ring is configured as a circular arc half ring adapted to sleeve onto the large-diameter portion. More specifically, a crossbar is provided at the distal end of the lock base, and a protrusion is provided at the distal end of the lock rod body. The protrusion has a rotation hole adapted to receive the crossbar. The lock base and lock rod are rotatably connected via the crossbar and the rotation hole.

[0007] Optionally, the clamping and fixing device further comprises a return spring, which is arranged between the lock seat and the lock rod and is located at the far end of the lock seat and the lock rod. The return spring makes the lock rod body have a tendency to leave the receiving groove.

[0008] Optionally, the fixing ring is provided with one of a coupling groove and a protruding tongue, and the locking rod is provided with the other of the coupling groove and the protruding tongue, and the coupling groove or the protruding tongue provided on the locking rod is axially movable relative to the locking rod body. The protruding tongue and the coupling groove are engaged in a snap-fitting manner, and when the coupling groove and the protruding tongue move away from each other, the protruding tongue and the coupling groove are released.

[0009] Preferably, the clamping and fixing device further comprises an axial spring, one end of the axial spring being connected to the locking rod body, and the other end of the axial spring being connected to a coupling groove or a tongue provided on the locking rod. The coupling groove or the tongue provided on the locking rod has a first position and a second position. When the coupling groove or the tongue provided on the locking rod is in the first position, the coupling groove and the tongue are coupled; when the coupling groove or the tongue provided on the locking rod is in the second position, the coupling groove and the tongue are disengaged. Furthermore, when the axial spring is in a natural state, the coupling groove or the tongue provided on the locking rod is in the first position; when the axial spring is in a compressed state, the coupling groove or the tongue provided on the locking rod is in the second position.

[0010] Optionally, the proximal end of the locking rod is provided with an axially extending button, the proximal end of the button protruding from the locking rod body, the distal end of the button extending into the locking rod body, and the button being axially movable relative to the locking rod body. The locking rod body is provided with a radial hole, and the distal end of the button is provided with a radially extending support rod, which extends through the radial hole. A tongue is provided at the overhanging end of the support rod, and a coupling groove is provided in the fixing ring. The proximal end of the axial spring is connected to the button, and the distal end of the axial spring is connected to the locking rod body. When the axial spring is in a natural state, the tongue is in a first position; when the axial spring is in a compressed state, the tongue is in a second position.

[0011] Preferably, the tongue has a thick portion and a thin portion and an inclined surface extending between the thick portion and the thin portion, the thick portion being located close to the axis of the clamping fixture.

[0012] In a second aspect, the present disclosure provides a wrist-type blood pressure monitor, comprising a blood pressure monitor body, a wristband, and the clamping and fixing device of the first aspect of the present disclosure. The wristband and the clamping and fixing device are respectively fixed to opposite sides of the blood pressure monitor body, and the overhanging end of the wristband can extend through between the locking rod body and the lock seat and be clamped and fixed.

[0013] Features and advantages of the present disclosure include:

[0014] The disclosed clamping and fixing device includes a locking rod, a locking seat, and a fixing structure. The fixing structure secures the locking rod body of the locking rod and the receiving groove of the locking seat, thereby securely clamping and fixing a wristband placed between the locking rod body and the locking seat. A wrist blood pressure monitor equipped with the disclosed clamping and fixing device securely secures the wristband and prevents it from slipping. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0016] Figure 1 A perspective schematic diagram of a wrist blood pressure monitor of the present disclosure is shown;

[0017] Figure 2 、 Figure 3 Shown Figure 1 A three-dimensional schematic diagram of a clamping fixture in FIG. Figure 2 For the near-end perspective, Figure 3 For the far perspective;

[0018] Figure 4 A schematic perspective view of a lock seat in a clamping fixture is shown;

[0019] Figure 5 A schematic diagram showing the clamping fixture in an unlocked state with the lock seat and the lock rod open;

[0020] Figure 6 A schematic diagram showing the clamping fixture in a locked state is shown.

[0021] Description of reference numerals:

[0022] 300-wrist sphygmomanometer, 301-wrist cuff, 200-sphygmomanometer body;

[0023] 100 - clamping fixture, 102 - pin, 103 - gap, 103a - curved segment, 103b - straight segment;

[0024] 10-locking rod, 12-locking rod body, 12a-large diameter portion, 12b-small diameter portion, 13-bump, 14-rotation hole, 15-button, 16-radial hole, 17-support rod, 19-first platform;

[0025] 20-lock seat, 22-receiving slot, 24-cross bar, 25-support portion, 26-connecting portion, 27-second platform;

[0026] 30-fixing ring, 32 coupling groove;

[0027] 40- tongue, 41- thick portion, 42- thin portion, 44- inclined surface. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present disclosure in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present disclosure. The "proximal end" mentioned in the present disclosure is the end that is easy for the user to view, which is convenient for the user to operate; the "distal end" is the end that is inconvenient for the user to view.

[0029] The present disclosure provides a clamping and fixing device for a wrist blood pressure monitor and a wrist blood pressure monitor including the same. Figure 1 The wrist sphygmomanometer 300 includes a sphygmomanometer body 200, a clamping fixture 100, and a wristband 301. One end of the wristband 301 is fixed to one side of the sphygmomanometer body 200, and the clamping fixture 100 is fixed to the other side of the sphygmomanometer body 200. The sphygmomanometer body 200 includes a housing, a control circuit, a detection unit, a display screen, control buttons, etc. Figure 1 The blood pressure monitor body 200 is for illustration only. It is understood that the side of the blood pressure monitor body 200 that fits the user can be curved to facilitate blood pressure measurement. The user can place the blood pressure monitor body 200 on the wrist pulse and wrap the wristband 301 around the wrist, securing it with the clamping device 100.

[0030] The following combination Figures 2 to 6 The clamping and fixing device 100 is described in detail. The clamping and fixing device 100 has a locked state and an unlocked state, and includes a locking rod 10, a locking base 20, and a fixing structure. The locking rod 10 includes a longitudinally extending locking rod body 12. The locking base 20 is configured to have a receiving slot 22 adapted to receive at least a portion of the locking rod body 12 and the wristband 301. The distal end of the locking rod 10 is coupled to the distal end of the locking base 20, allowing the locking rod 10 to be rotatably connected to the locking base 20. The fixing structure is connected to at least the proximal end of the locking base 20 or the locking rod 10. Among them, when the clamping and fixing device 100 is in a locked state, at least part of the locking rod body 12 is located in the receiving groove 22 and the fixing structure keeps this part of the locking rod body 12 in the receiving groove 22, thereby clamping and fixing the wristband 301 located between the locking rod body 12 and the lock seat 20; when in an unlocked state, the proximal end of the locking rod 10 can be away from the proximal end of the lock seat 20, so that the wristband 301 located between the locking rod body 12 and the lock seat 20 can move.

[0031] Specifically, in some embodiments, the fixing structure is configured as a push-type spring lock, which includes a first portion and a second portion that can be engaged and disengaged by pressing. The first portion of the push-type spring lock is secured to the locking bar 10, and the second portion is secured to the lock base 20. Preferably, the clamping fixture 100 includes two push-type spring locks, each disposed on either side of the proximal end of the clamping fixture 100. For example, the two first portions are secured to either side of the proximal end of the locking bar body 12, while the two second portions are secured to either side of the proximal end of the lock base 20. When at least a portion of the locking bar body 12 is positioned within the receiving slot 22, pressing the proximal end of the locking bar 10 can engage the two portions of the push-type spring lock, thereby retaining the locking bar body 12 within the receiving slot 22. Pressing the proximal end of the locking bar 10 again can disengage the two portions of the push-type spring lock, thereby separating the proximal end of the locking bar 10 from the proximal end of the lock base 20.

[0032] In other embodiments, the fixing structure is configured as a fixing ring 30, which is rotatably connected to the proximal end of either the lock base 20 or the locking rod 10 and is rotatable about a transverse axis. The fixing ring 30 is configured in a semi-annular shape and is adapted to accommodate the other of the lock base 20 or the locking rod 10. When at least a portion of the locking rod body 12 is positioned within the receiving groove 22, the fixing ring 30 is reversibly coupled to the other of the lock base 20 or the locking rod 10. Preferably, the fixing ring 30 is rotatably connected to the proximal end of the lock base 20 and adapted to accommodate the locking rod 10. When at least a portion of the locking rod body 12 is positioned within the receiving groove 22, the fixing ring 30 is reversibly coupled to the locking rod 10. More specifically, the clamping fixing device 100 includes two pins 102, one located on either side of the outer periphery of the proximal end of the lock base 20. The fixing ring 30 is rotatably coupled to the lock base 20 via the two pins 102. The transverse axis of the fixing ring 30 intersects the axis of the clamping fixture 100 , so that the fixing ring 30 can be rotated to the lower side of the lock seat 20 or the upper side of the locking rod 10 .

[0033] Specifically, the locking rod body 12 includes a large-diameter portion 12a and a small-diameter portion 12b arranged along the circumference. The receiving groove 22 is configured as an arc-shaped groove suitable for receiving the small-diameter portion 12b. The fixing ring 30 is rotatably connected to the proximal end of the lock base 20. The fixing ring 30 is configured as an arc-shaped half ring suitable for sleeve-fitting the large-diameter portion 12a. Preferably, the outer circumference of the lock base 20 is configured as an arc, and the outer diameter of the lock base 20 is equal to the outer diameter of the large-diameter portion 12a. When the small-diameter portion 12b of the locking rod body 12 is located in the receiving groove 22, the locking rod 10 and the lock base 20 are combined to form a cylindrical body. Figure 2When the small-diameter portion 12b of the locking rod body 12 is located within the receiving groove 22, a gap 103 is formed between the small-diameter portion 12b and the receiving groove 22, allowing the wristband 301 located within the gap 103 to be clamped and secured. It should be noted that the locking rod body 12, the lock seat 20, and the fixing ring 30 can also be configured in other shapes, as long as the clamping and fixing device 100 can clamp and secure the wristband 301. For example, the locking rod body 12 is configured to include a large rectangular portion and a small rectangular portion arranged along the circumference, the receiving groove 22 is configured as a rectangular groove suitable for receiving the small rectangular portion, and the fixing ring 30 is configured as a rectangular half-ring suitable for accommodating the large rectangular portion. When the small rectangular portion of the locking rod body 12 is located within the receiving groove 22, the locking rod 10 and the lock seat 20 combine to form a rectangular parallelepiped.

[0034] Specifically, see Figure 3 、 Figure 4 The lock base 20 is provided with a crossbar 24 at its distal end, and the lock bar body 12 is provided with a protrusion 13 at its distal end. The protrusion 13 has a rotation hole 14 adapted to receive the crossbar 24. The lock base 20 and the lock bar 10 are rotatably connected via the crossbar 24 and the rotation hole 14. More specifically, the lock base 20 is provided with two supports 25 at its distal end, with the protrusion 13 positioned between the two supports 25, and the crossbar 24 can be connected to both supports. Alternatively, the crossbar can be fixed to the protrusion 13 and rotatably connected relative to the supports 25. Preferably, the clamping fixture 100 includes a return spring (not shown) disposed between the lock base 20 and the lock bar 10, located at the distal ends of the lock base 20 and the lock bar 10. The return spring forces the lock bar body 12 to move away from the receiving slot 22. During use, the return spring's force must be overcome to allow at least a portion of the lock bar body 12 to move into the receiving slot 22. When the fixing ring 30 is not sleeved on the locking rod body 12 , the locking rod body 12 leaves the receiving groove 22 under the elastic force of the return spring.

[0035] To ensure that the fixing ring 30 remains continuously attached to the locking rod 10, in some embodiments, the fixing ring 30 is provided with either a coupling groove or a protruding tongue, and the locking rod 10 is provided with the other of the coupling groove or the protruding tongue. The coupling groove or the protruding tongue provided on the locking rod 10 is axially movable relative to the locking rod body 12. The protruding tongue and the coupling groove are engaged in a snap-fitting manner, and when the coupling groove and the protruding tongue move away from each other, the protruding tongue and the coupling groove are disengaged. Specifically, the fixing ring 30 is provided with a coupling groove 32, which can be configured as a rectangular groove. The locking rod 10 is provided with a protruding tongue 40 that protrudes from the outer periphery of the locking rod body 12 and is axially movable relative to the locking rod body 12. The protruding tongue 40 has a first position and a second position. When the protruding tongue 40 is in the first position, the coupling groove 32 is engaged with the protruding tongue 40; when the protruding tongue 40 is in the second position, the coupling groove 32 and the protruding tongue 40 are disengaged. The first position is close to the proximal end of the locking rod body, and the tongue 40 moves in a direction away from the proximal end of the locking rod body, so that the tongue 40 and the coupling groove 32 are released.

[0036] More specifically, in some embodiments, the tongue 40 is held in the first position by an axial spring (not shown). The axial spring is specifically an axially compressible spring. One end of the axial spring is connected to the tongue 40, and the other end is connected to the locking rod body 12. When the axial spring is in its neutral position, the tongue 40 is in the first position; when the axial spring is in its compressed position, the tongue 40 is in the second position. To release the tongue 40 from the engagement groove 32, an external force is applied to overcome the elastic force of the axial spring and push the tongue 40 distally until the engagement is released.

[0037] Preferably, see Figure 2 The proximal end of the locking rod 10 is provided with an axially extending button 15. The proximal end of the button 15 can protrude from the locking rod body 12, and the distal end of the button 15 extends into the locking rod body 12, allowing the button 15 to move axially relative to the locking rod body 15. The locking rod body 12 is provided with a radial hole 16, specifically, the radial hole 16 is provided in the large diameter portion 12a. The distal end of the button 15 is provided with a radially extending support rod 17, which extends through the radial hole 16. The tongue 40 is provided at the cantilevered end of the support rod. The proximal end of the axial spring is connected to the button, and the distal end is connected to the locking rod body 12. When the axial spring is in its natural state, the axial spring causes the proximal end of the button 15 to protrude from the locking rod body 12, thereby positioning the tongue 40 in the first position. Pressing the button 15 compresses the axial spring, causing the button 15 to move toward the distal end of the locking rod body 12, thereby positioning the tongue 40 in the second position.

[0038] Continue to see Figure 2Preferably, the tongue 40 has a thick portion 41 and a thin portion 42, and an inclined surface 44 extending between the thick portion 41 and the thin portion 42, with the thick portion 41 being located near the axis of the clamping fixture 100. The thick portion 41 and the thin portion 42 of the tongue 40 facilitate smooth engagement of the tongue 40 with the engagement groove 32 when the fixing ring 30 is flipped over to fit the locking rod body 12.

[0039] Continue to see Figures 2 to 4 A connection portion 26 is provided on one side of the lock base 20, through which the lock base 20 is connected to the sphygmomanometer body 200. In some embodiments, the connection portion 26 is configured as a laterally extending plate. It should be noted that the lock base 20 and the sphygmomanometer body 200 can also be detachably connected, for example, by means of a bolt, screw hole, or snap fastener.

[0040] See also Figure 5 The lower portion of the large-diameter portion 12a forms a first platform 19 located on either side of the small-diameter portion 12b, and the upper portion of the lock seat 20 forms a second platform 27 located on either side of the receiving slot 12. The gap 103 includes a curved segment 103a and a straight segment 103b, with the curved segment 103a located between the two straight segments 103b. When the small-diameter portion 12b of the lock rod body 12 is located within the receiving slot 22, the curved segment 103a forms a gap between the small-diameter portion 12b and the receiving slot 22, and the straight segment 103b forms a gap between the first platform 19 and the second platform 27. The provision of the curved segment 103a and the straight segment 103b in the gap 103 helps increase the friction between the wristband 301 and the contactable portion of the clamping and fixing device 100, allowing the clamping and fixing device 100 to more securely clamp and fix the wristband 301.

[0041] The following combination Figure 5 、 Figure 6 , introduces how to use the clamping and fixing device 100 of the present disclosure to fix the wristband 301. Figure 5 , rotate the fixing ring 30 to the lower side of the lock seat 20, move the lock rod 10 (or under the action of the return spring) to make the lock rod body leave the receiving groove 22, place the wristband 301 on the upper side of the lock seat 20 and tighten it. Figure 6 While tightening the wristband 301, press the locking rod 10 downward until the small-diameter portion 12b of the locking rod body 12 is located in the receiving slot. Rotate the fixing ring 30 to fit over the locking rod body 12, and the tongue 40 automatically enters the engagement slot 32. At this point, the clamping and fixing device 100 is in a locked state, stably clamping and fixing the wristband 301. To unlock, press the button 15 to release the tongue 40 from the engagement slot 32. Flip the fixing ring 30 to the bottom of the lock base 20, and move the locking rod 10 (or, with the help of a return spring), release the locking rod body from the receiving slot 22. The clamping and fixing device 100 is now unlocked, allowing the wristband 301 to move freely.

[0042] In summary, the clamping and fixing device 100 of the present disclosure includes a locking rod 10, a locking base 20, and a fixing structure. The fixing structure secures at least a portion of the locking rod body 12 of the locking rod 10 and the receiving groove 22 of the locking base 20, thereby securely clamping and fixing the wristband 301 placed between the locking rod body 12 and the locking base 22. A wrist blood pressure monitor 300 equipped with the clamping and fixing device of the present disclosure securely secures the wristband 301 and prevents it from slipping.

[0043] The above are only several embodiments of the present disclosure. Those skilled in the art may make various changes or modifications to the embodiments of the present disclosure based on the contents disclosed in the application documents without departing from the spirit and scope of the present disclosure.

Claims

1. A clamping and fixing device for a wrist blood pressure monitor, used for clamping and fixing a wristband of a wrist blood pressure monitor, characterized in that: include: A locking rod, the locking rod comprising a longitudinally extending locking rod body; a lock base, the lock base being configured to have a receiving slot adapted to receive at least a portion of the lock bar body and the wristband, the distal end of the lock bar being coupled to the distal end of the lock base so that the lock bar is rotatably connected to the lock base; a fixing structure connected to a proximal end of at least one of the lock base or the lock rod; Wherein, the clamping and fixing device has a locked state and an unlocked state; When the clamping and fixing device is in a locked state, at least a portion of the locking rod body is located in the receiving groove and the fixing structure keeps this portion of the locking rod body in the receiving groove, thereby clamping and fixing the wristband between the locking rod body and the lock seat; when in an unlocked state, the proximal end of the locking rod can be away from the proximal end of the lock seat, so that the wristband between the locking rod body and the lock seat can move.

2. The clamping and fixing device according to claim 1, characterized in that: The fixing structure is configured as a fixing ring rotatably connected to a proximal end of one of the locking seat or the locking rod; Wherein, when at least a portion of the locking rod body is located in the receiving groove, the fixing ring can be flipped and sleeved onto the other one of the locking seat and the locking rod.

3. The clamping and fixing device according to claim 2, characterized in that: The locking rod body includes a large diameter portion and a small diameter portion distributed along the circumferential direction, the receiving groove is configured to be a circular arc groove suitable for receiving the small diameter portion, the fixing ring is rotatably connected to the proximal end of the lock seat, and the fixing ring is configured to be suitable for sleeved on the circular arc half ring of the large diameter portion.

4. The clamping and fixing device according to claim 3, characterized in that: The distal end of the lock seat is provided with a cross bar, the distal end of the lock rod body is provided with a protrusion, the protrusion is provided with a rotation hole suitable for accommodating the cross bar, and the lock seat and the lock rod are rotatably connected through the cross bar and the rotation hole.

5. The clamping and fixing device according to claim 4, characterized in that: Also included is a return spring, which is disposed between the lock seat and the lock rod and is located at the distal end of the lock seat and the lock rod; The return spring causes the locking rod body to tend to leave the receiving groove.

6. The clamping and fixing device according to claim 4 or 5, characterized in that: The fixing ring is provided with one of a coupling groove and a protruding tongue, the locking rod is provided with the other of the coupling groove and the protruding tongue, and the coupling groove or the protruding tongue provided on the locking rod is axially movable relative to the locking rod body; The protruding tongue is engaged with the coupling groove in a buckling manner, and when the coupling groove and the protruding tongue are moved away from each other, the protruding tongue is released from the coupling groove.

7. The clamping and fixing device according to claim 6, characterized in that: Also included is an axial spring, one end of the axial spring is connected to the locking rod body, and the other end of the axial spring is connected to a coupling groove or a tongue provided on the locking rod; The coupling groove or the protruding tongue provided on the lock rod has a first position and a second position. When the coupling groove or the protruding tongue provided on the lock rod is in the first position, the coupling groove is coupled with the protruding tongue; when the coupling groove or the protruding tongue provided on the lock rod is in the second position, the coupling groove is released from the protruding tongue. When the axial spring is in a natural state, the coupling groove or the protruding tongue provided on the locking rod is located in a first position; when the axial spring is in a compressed state, the coupling groove or the protruding tongue provided on the locking rod is located in a second position.

8. The clamping fixture according to claim 7, characterized in that: The proximal end of the locking rod is provided with an axially extending button, the proximal end of the button protrudes from the locking rod body, the distal end of the button extends into the locking rod body, and the button is axially movable relative to the locking rod body; The locking rod body is provided with a radial hole, the distal end of the button is provided with a radially extending support rod, the support rod extends through the radial hole, the protruding tongue is provided at the overhanging end of the support rod, and the coupling groove is provided on the fixing ring; The proximal end of the axial spring is connected to the button, and the distal end of the axial spring is connected to the locking rod body; Wherein, when the axial spring is in a natural state, the protruding tongue is located at a first position; when the axial spring is in a compressed state, the protruding tongue is located at a second position.

9. The clamping and fixing device according to claim 8, characterized in that: The tongue has a thick portion and a thin portion and an inclined surface extending between the thick portion and the thin portion, the thick portion being disposed proximate to the axis of the clamping fixture.

10. A wrist blood pressure monitor, characterized in that: include: A blood pressure monitor body, a wristband, and a clamping and fixing device according to any one of claims 1 to 9, wherein the wristband and the clamping and fixing device are respectively fixed to opposite sides of the blood pressure monitor body, and the overhanging end of the wristband can extend through between the locking rod body and the locking seat to be clamped and fixed.

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