Intelligent internal arteriovenous fistula vascular noise monitoring device

Abstract

The invention relates to the technical field of medical instruments, and discloses an intelligent internal arteriovenous fistula vascular noise monitoring device which comprises an arm guard, the arm guard is worn on the arm of a patient, a plurality of monitoring mechanisms are arranged on the arm guard, and each monitoring mechanism comprises a first shell and an electronic stethoscope. The electronic stethoscope is used for being attached to an internal arteriovenous fistula of an arm of a patient to monitor vascular noise. A cylinder is arranged on the first shell, a lifting rod is arranged on the cylinder in a sliding mode, a connecting ball is arranged on the lifting rod, the connecting ball is rotationally connected to the electronic stethoscope, and a plurality of damping mechanisms are arranged on the first shell in the circumferential direction. According to the intelligent internal arteriovenous fistula vascular noise monitoring device, the multiple electronic stethoscopes are worn on the arms along with the arm guards, the whole internal arteriovenous fistula is monitored and recorded in real time, the segmented vibration reduction function is achieved, and effective noise monitoring is conducted on a patient in the movement process under the condition that the wearing comfort is kept as much as possible.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an intelligent arteriovenous fistula vascular murmur monitoring device. Background Art

[0002] For patients with renal failure and other conditions that require long-term hemodialysis, it is crucial to establish a stable and effective vascular access. Usually, doctors will connect an artery and a vein of the patient through surgery to form an internal fistula. The most common site is the forearm, such as anastomosis of the radial artery and the cephalic vein. During hemodialysis, medical staff can insert a puncture needle into the arterial and venous ends of the internal fistula to draw out blood from the body. After purification by the dialysis machine, it is then returned to the body.

[0003] After fistula formation surgery, arterial blood flows through the fistula vein through the anastomosis, and its movement mode changes from relatively laminar flow to turbulent flow, and hits the venous wall to produce murmurs, which sounds like "blowing". The successful establishment and good maintenance of hemodialysis fistulas have an important impact on the patient's treatment effect and quality of life. Therefore, it is necessary to monitor the vascular murmurs of arteriovenous fistulas regularly. For newly established fistulas, within one week after the operation, the murmurs of the surgical wound (anastomosis) should be louder day by day. If the murmur weakens day by day, the tone of the murmur increases significantly, or the murmur disappears, the fistula may be narrowed or even occluded.

[0004] In the prior art, the method of monitoring the vascular murmur of the arteriovenous fistula is usually to listen manually with ears and fingers or by using a stethoscope attached to the fistula. On the one hand, manual listening cannot effectively monitor the changes of the vascular murmur of the fistula in real time, and on the other hand, the accuracy of manual listening is also low and it cannot be recorded.

[0005] Therefore, in order to solve the above technical problems existing in the prior art, an intelligent arteriovenous fistula vascular murmur monitoring device is proposed. Summary of the invention

[0006] The present invention provides an intelligent arteriovenous fistula vascular murmur monitoring device, which has the function of allowing multiple electronic stethoscopes to be worn close to the arm with an arm guard, so as to monitor and record the entire arteriovenous fistula in real time, and has a segmented vibration reduction function. While maintaining the wearing comfort as much as possible, it also has the beneficial effect of effectively monitoring the murmur of patients during exercise. The present invention solves the problem that in the prior art mentioned in the above background technology, the method for monitoring the vascular murmur of the arteriovenous fistula usually relies on manual monitoring with ears and fingers or using a stethoscope attached to the fistula. On the one hand, manual monitoring cannot effectively monitor the momentary changes of the fistula vascular murmur in real time, and on the other hand, the accuracy of manual monitoring is also low and it cannot be recorded.

[0007] The present invention provides the following technical solution: an intelligent arteriovenous fistula vascular murmur monitoring device, comprising an arm guard, the arm guard is worn on the patient's arm, a plurality of monitoring mechanisms are arranged on the arm guard, the monitoring mechanisms include a first shell and an electronic stethoscope, the electronic stethoscope is attached to the arteriovenous fistula of the patient's arm to monitor the vascular murmur; The first shell is provided with a cylinder, a lifting rod is slidably provided on the cylinder, a connecting ball is provided on the lifting rod, and the connecting ball is rotatably connected to the electronic stethoscope, and a plurality of vibration reduction mechanisms are provided on the circumference of the first shell; When the patient is in motion, the vibration reduction mechanism absorbs part of the energy generated by the vibration of the electronic stethoscope and the lifting rod to reduce vibration, and a plurality of the vibration reduction mechanisms are connected to the lifting rod step by step according to the vibration degree of the electronic stethoscope.

[0008] As an optional solution of the intelligent arteriovenous fistula vascular murmur monitoring device of the present invention, wherein: the vibration reduction mechanism includes a second shell provided on the cylinder, and a third knob is provided on the second shell; The vibration reduction mechanism further includes a damper and a spring, one end of the damper is connected to the third knob, the other end of the damper is transmission-connected to the lifting rod, and both ends of the spring are respectively connected to both ends of the damper; When the lifting rod slides back and forth, the damper is driven to expand and contract. At this time, the lifting rod and the electronic stethoscope are damped by the damper and the spring.

[0009] As an optional solution of the intelligent arteriovenous fistula vascular murmur monitoring device described in the present invention, the vibration damping mechanism also includes a screw, one end of which is transmission connected to the lifting rod through a first transmission assembly, and the other end of the screw is transmission connected to the other end of the damper through a second transmission assembly.

[0010] As an optional solution of the intelligent arteriovenous fistula vascular murmur monitoring device described in the present invention, the first transmission component includes a sliding connection seat slidably arranged on the second shell, and a fixed connection seat is arranged on the lifting rod. The first transmission component also includes a connecting rod, and both ends of the connecting rod are provided with rotating shafts, and the two rotating shafts are rotatably connected to the sliding connection seat and the fixed connection seat respectively.

[0011] As an optional solution of the intelligent arteriovenous fistula vascular murmur monitoring device described in the present invention, the sliding connection seat is provided with a mounting seat, a nut is rotatably provided on the mounting seat, and the nut is threadedly connected to the screw rod.

[0012] As an optional solution of the intelligent arteriovenous fistula vascular murmur monitoring device of the present invention, wherein: the nut is provided with a first latching tooth, and the second shell is provided with a second latching tooth; When the first latching tooth is engaged with the second latching tooth, the lifting rod reciprocates to drive the sliding connection seat and the mounting seat to move back and forth, the mounting seat drives the nut and the screw to move back and forth, and the screw drives the damper to extend and retract; When the first latching tooth is not in contact with the second latching tooth, the reciprocating sliding of the lifting rod drives the sliding connection seat and the mounting seat to move back and forth, and the mounting seat drives the nut to move spirally on the screw rod, and the screw rod and the damper are stationary.

[0013] As an optional solution of the intelligent arteriovenous fistula vascular murmur monitoring device described in the present invention, the lengths of several second teeth in several vibration damping mechanisms decrease successively in the counterclockwise direction, the distances between one ends of several second teeth and the central axis of the first shell are equal, and the distances between the other ends of several second teeth and the central axis of the first shell increase successively in the counterclockwise direction.

[0014] As an optional solution of the intelligent arteriovenous fistula vascular murmur monitoring device described in the present invention, the second transmission assembly includes a connecting block arranged at the other end of the damper, a rotating groove is opened on the connecting block, a limiting block is arranged at the other end of the screw rod, and the screw rod and the limiting block are rotatably connected in the rotating groove.

[0015] As an optional solution of the intelligent arteriovenous fistula vascular murmur monitoring device of the present invention, wherein: both ends of the arm guard are provided with straps, and the two straps are bonded by Velcro; The monitoring mechanism further includes a bellows, and two ends of the bellows are respectively connected to the first housing and the electronic stethoscope; A first knob is threadedly mounted on the first shell, and the first knob is rotatably connected to the cylinder body. The height of the electronic stethoscope and the cylinder body can be adjusted by the first knob.

[0016] As an optional solution of the intelligent arteriovenous fistula vascular murmur monitoring device of the present invention, wherein: the monitoring mechanism also includes a turntable, the turntable is rotatably connected to the guard arm, the first shell is installed on the turntable, and the first shell is located at a position deviated from the center of the turntable, and a second knob is provided at the center of the turntable; The horizontal positions of the electronic stethoscope and the cylinder are adjusted by rotating the turntable to fit the patient's arteriovenous fistula.

[0017] The present invention has the following beneficial effects: 1. The intelligent arteriovenous fistula vascular murmur monitoring device can intelligently monitor the arteriovenous fistula vascular murmur by installing an electronic stethoscope on the arm guard and wearing it on the patient's arm. On the one hand, it is more convenient than manual monitoring with a stethoscope or ear, and can monitor and record in real time. On the other hand, electronic equipment monitoring can also record the tone and volume, which is more accurate than human ear monitoring.

[0018] 2. The intelligent arteriovenous fistula vascular murmur monitoring device has different murmurs in different locations due to different conditions of the fistula blood vessels. Therefore, a row of electronic stethoscopes are installed on the arm guard to monitor all parts of the entire fistula blood vessel. The positions of multiple electronic stethoscopes can be adjusted to adapt to the fistula distribution positions of different patients.

[0019] 3. The intelligent arteriovenous fistula vascular murmur monitoring device is equipped with an electronic stethoscope equipped with a vibration reduction mechanism to reduce the vibration of the electronic stethoscope when the patient is in motion, so that the electronic stethoscope and the arm remain relatively stable, thereby monitoring the fistula vascular murmur in motion.

[0020] There are multiple vibration reduction mechanisms, and the vibration reduction functions of the multiple vibration reduction mechanisms are switched on and off in stages. When the arm shakes slightly, only one vibration reduction mechanism is switched to provide the vibration reduction effect, and the electronic stethoscope will not press the arm too tightly. As the arm movement increases, the remaining vibration reduction mechanisms will start the vibration reduction function step by step. In this way, while maintaining wearing comfort, a multi-level intelligent vibration reduction effect is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 It is a schematic diagram of the cross-sectional structure of the arm guard in the present invention.

[0023] Figure 3 For the present invention Figure 2 Schematic diagram of the local enlarged structure at point A in the middle.

[0024] Figure 4 It is a schematic cross-sectional structural diagram of the first shell in the present invention.

[0025] Figure 5 For the present invention Figure 4 Schematic diagram of the local enlarged structure at point B in the middle.

[0026] Figure 6 For the present invention Figure 4 Schematic diagram of the local enlarged structure at point C in the middle.

[0027] Figure 7 It is a schematic diagram of the explosion structure of the monitoring mechanism in the present invention.

[0028] Figure 8 It is a schematic diagram of the structure of the monitoring mechanism and the vibration reduction mechanism in the present invention.

[0029] Fig. 9 It is a schematic diagram of the explosion structure of several groups of vibration reduction mechanisms in the present invention.

[0030] Fig.10 It is a schematic diagram of the explosion structure of a single set of vibration reduction mechanisms in the present invention.

[0031] In the figure: 100, arm guard; 110, strap; 120, Velcro; 200, monitoring mechanism; 210, first shell; 220, electronic stethoscope; 230, cylinder; 240, lifting rod; 250, connecting ball; 260, first knob; 270, turntable; 280, second knob; 290, bellows; 300, vibration reduction mechanism; 310, second shell; 320, third knob; 330, damper; 340, spring; 350, screw; 360, first transmission assembly; 361, sliding connection seat; 362, fixed connection seat; 363, connecting rod; 364, rotating shaft; 365, mounting seat; 366, nut; 367, first clamping tooth; 368, second clamping tooth; 370, second transmission assembly; 371, connecting block; 372, rotating groove; 373, limit block. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] For example, see Figure 1-Figure 2 , an intelligent arteriovenous fistula vascular murmur monitoring device, comprising an arm guard 100, the arm guard 100 is worn on the patient's arm, a plurality of monitoring mechanisms 200 are arranged on the arm guard 100, the monitoring mechanism 200 comprises a first shell 210 and an electronic stethoscope 220, the electronic stethoscope 220 is used to be attached to the arteriovenous fistula of the patient's arm to monitor the vascular murmur; The first housing 210 is provided with a cylinder 230, a lifting rod 240 is slidably provided on the cylinder 230, a connecting ball 250 is provided on the lifting rod 240, and the connecting ball 250 is rotatably connected to the electronic stethoscope 220. A plurality of vibration reduction mechanisms 300 are circumferentially provided on the first housing 210; When the patient is in motion, the vibration reduction mechanism 300 absorbs part of the energy generated by the vibration of the electronic stethoscope 220 and the lifting rod 240 to reduce vibration, and a plurality of vibration reduction mechanisms 300 are connected to the lifting rod 240 step by step according to the vibration degree of the electronic stethoscope 220; Both ends of the arm guard 100 are provided with straps 110 , and the two straps 110 are bonded by Velcro 120 ; The monitoring mechanism 200 further includes a bellows 290, and two ends of the bellows 290 are respectively connected to the first housing 210 and the electronic stethoscope 220; A first knob 260 is threadedly mounted on the first housing 210 , and the first knob 260 is rotatably connected to the cylinder 230 , and the height of the electronic stethoscope 220 and the cylinder 230 can be adjusted by the first knob 260 ; The monitoring mechanism 200 further includes a turntable 270, which is rotatably connected to the guard arm 100, and the first housing 210 is mounted on the turntable 270, and the first housing 210 is located at a position deviated from the center of the turntable 270, and a second knob 280 is provided at the center of the turntable 270; The turntable 270 is rotated to adjust the horizontal positions of the electronic stethoscope 220 and the cylinder 230 to fit the patient's arteriovenous fistula.

[0034] In this embodiment, the arm guard 100 can be made of a flexible material such as leather, and can be inflated to improve wearing comfort, and has a certain elasticity to better fit the arm. Two straps 110 surround the patient's arm and are bonded together by Velcro 120 to fix the position of the arm guard 100.

[0035] A row of monitoring mechanisms 200 are installed on the arm guard 100 along the arm direction, and are connected to the electronic stethoscope 220 at the lower end of the first housing 210 through a lifting rod 240 and a bellows 290. The connecting ball 250 installed on the lifting rod 240 is connected to the electronic stethoscope 220 in a manner similar to a ball pin and a ball pin seat. The electronic stethoscope 220 can be fitted on the arm to rotate and move at various angles, and the displacement of the electronic stethoscope 220 will drive the lifting rod 240 to rise and fall.

[0036] The first knob 260 will spiral up or down when rotating forward or reverse. The first knob 260 spirals up and drives the cylinder 230 up, and the first knob 260 spirals down and drives the cylinder 230 down. By turning the first knob 260, the initial height of the first shell 210 and the electronic stethoscope 220 can be adjusted to adjust the tightness of the electronic stethoscope 220 and the arm.

[0037] The turntable 270 can be rotated by turning the second knob 280, driving the first housing 210 and the electronic stethoscope 220 to make circular motions to adjust their positions. Since the distribution positions and angles of fistulas in different patients are different, each electronic stethoscope 220 can cover the entire blood vessel by turning each second knob 280 respectively.

[0038] The electronic stethoscope 220 can amplify the vascular murmur through a speaker, or output it by converting it into an electrical signal, and then connect it to a mobile phone app to record the real-time monitored fistula vascular murmur. As a conventional technical means, the specific structure and working principle of the electronic stethoscope 220 will not be described in detail.

[0039] Traditional stethoscopes require the arm to remain still during measurement, and are unable to monitor the fistula blood vessels in motion. Therefore, the electronic stethoscope 220 is also provided with a vibration reduction measure so that the fistula blood vessel murmur can be monitored when the patient is in motion.

[0040] Embodiment 2: This embodiment is an improvement on Embodiment 1. For details, please refer to Figure 2-Figure 10 The vibration reduction mechanism 300 includes a second housing 310 disposed on the cylinder 230 , and a third knob 320 is disposed on the second housing 310 ; The vibration reduction mechanism 300 further includes a damper 330 and a spring 340, one end of the damper 330 is connected to the third knob 320, the other end of the damper 330 is transmission-connected to the lifting rod 240, and both ends of the spring 340 are respectively connected to both ends of the damper 330; When the lifting rod 240 slides back and forth, the damper 330 is driven to expand and contract. At this time, the lifting rod 240 and the electronic stethoscope 220 are damped by the damper 330 and the spring 340 .

[0041] In this embodiment, when the arm makes various movements, the lifting rod 240 moves up and down due to acceleration and inertia. The frequent displacements generate vibration effects, which are then transmitted to the damper 330 and the spring 340. The damper 330 and the spring 340 are compressed and rebounded, and part of the energy generated by the vibration is absorbed. By absorbing and releasing energy, the amplitude and frequency of the vibration of the lifting rod 240 can be reduced, thereby reducing the amplitude of the shaking of the electronic stethoscope 220, so that the electronic stethoscope 220 and the arm remain relatively stable.

[0042] The damper 330 can be a hydraulic damper or a pneumatic damper, and its principle is to convert the kinetic energy in motion into heat energy through friction or viscosity, thereby consuming excess energy. The damper 330 is usually composed of a sealed liquid or gas, a piston, and a spring. When vibration occurs, the liquid or gas inside the damper 330 will be forced to flow, generating resistance and slowing down the amplitude of the vibration.

[0043] In addition, the third knob 320 can also be threadedly mounted on the second housing 310, and the left end of the damper 330 is rotatably mounted on the third knob 320. By turning the third knob 320, the initial position of the damper 330 and the spring 340 can be adjusted, thereby increasing or decreasing the elastic force of the damper 330 and the spring 340.

[0044] The elastic force of the damper 330 and the spring 340 can support the lifting rod 240 and the electronic stethoscope 220 to be in the initial position when no external force is applied, and can allow the lifting rod 240 and the electronic stethoscope 220 to return to their original position after being applied with force.

[0045] Embodiment 3: This embodiment is an improvement made on the basis of Embodiment 2. For details, please refer to Figure 1-Figure 10 The vibration reduction mechanism 300 further includes a screw rod 350, one end of which is transmission-connected to the lifting rod 240 via a first transmission assembly 360, and the other end of the screw rod 350 is transmission-connected to the other end of the damper 330 via a second transmission assembly 370; The first transmission assembly 360 includes a sliding connection seat 361 slidably disposed on the second housing 310, a fixed connection seat 362 is disposed on the lifting rod 240, and the first transmission assembly 360 also includes a connecting rod 363, both ends of the connecting rod 363 are provided with a rotating shaft 364, and the two rotating shafts 364 are rotatably connected to the sliding connection seat 361 and the fixed connection seat 362 respectively; The sliding connection seat 361 is provided with a mounting seat 365, and a nut 366 is rotatably provided on the mounting seat 365, and the nut 366 is threadedly connected to the screw rod 350; The nut 366 is provided with a first latching tooth 367 , and the second housing 310 is provided with a second latching tooth 368 ; When the first latching tooth 367 is engaged with the second latching tooth 368, the lifting rod 240 reciprocates to drive the sliding connection seat 361 and the mounting seat 365 to move back and forth, the mounting seat 365 drives the nut 366 and the screw rod 350 to move back and forth, and the screw rod 350 drives the damper 330 to extend and retract; When the first latching tooth 367 is not in contact with the second latching tooth 368, the lifting rod 240 reciprocates to drive the sliding connection seat 361 and the mounting seat 365 to reciprocate, and the mounting seat 365 drives the nut 366 to move spirally on the screw rod 350, and the screw rod 350 and the damper 330 are stationary; The lengths of the several second teeth 368 in the several vibration damping mechanisms 300 decrease successively in the counterclockwise direction, the distances between one end of the several second teeth 368 and the central axis of the first shell 210 are equal, and the distances between the other end of the several second teeth 368 and the central axis of the first shell 210 increase successively in the counterclockwise direction.

[0046] In this embodiment, when the damper 330 and the spring 340 reduce vibrations of the lifting rod 240 and the electronic stethoscope 220, the electronic stethoscope 220 will reversely apply a certain pressure to the arm, increasing the patient's discomfort. Therefore, multiple vibration reduction mechanisms 300 are provided in the circumferential direction, and the multiple vibration reduction mechanisms 300 are opened in sections according to the shaking degree of the patient's arm and the electronic stethoscope 220.

[0047] As shown in the figure, there are three vibration reduction mechanisms 300, and the vibration reduction mechanism 300 on the left side is set as a, the vibration reduction mechanism 300 on the right front side is set as b, and the vibration reduction mechanism 300 on the right rear side is set as c in counterclockwise order.

[0048] In the vibration reduction mechanism 300, the transmission of the damper 330 and the lifting rod 240 is an openable and closable transmission structure. When the arm is stationary or the movement amplitude is not large, the a vibration reduction mechanism 300 is initially turned on for transmission, and at this time, there is a set of dampers 330 and springs 340 to provide vibration reduction effect. As the arm shaking amplitude increases, the lifting rod 240 moves upward, and the b vibration reduction mechanism 300 is also turned on for transmission, and at this time, there are two sets of dampers 330 and springs 340 to provide vibration reduction effect. As the arm shaking amplitude increases further, the c vibration reduction mechanism 300 is also turned on for transmission, and at this time, there are three sets of dampers 330 and springs 340 to provide vibration reduction effect.

[0049] Specifically, the structural difference between the three groups of vibration reduction mechanisms 300 a, b and c lies only in the length of the three groups of second latching teeth 368 , the second latching teeth 368 of the vibration reduction mechanism 300 a is the longest, the second latching teeth 368 of the vibration reduction mechanism 300 b is the second longest, and the second latching teeth 368 of the vibration reduction mechanism 300 c is the shortest.

[0050] When the lifting rod 240 moves upward to the first gear, the lifting rod 240 moves upward and drives the sliding connection seat 361 to move away from the center of the first shell 210 through the transmission of the sliding connection seat 361, the fixed connection seat 362 and the connecting rod 363. At this time, the first latching teeth 367 in the three groups abc are not in contact with the second latching teeth 368. The screw rod 350 remains stationary under the elastic support of the damper 330 and the spring 340. At this time, the mounting seat 365 and the nut 366 move left with the sliding connection seat 361, and the nut 366 will rotate relative to the mounting seat 365, that is, the nut 366 is spirally moved to the left. At this time, the lifting rod 240 rises and drives the sliding connection seat 361 to move left, but does not drive the screw rod 350 to move.

[0051] When the lifting rod 240 moves upward to the second gear, the first latching tooth 367 in the a damping mechanism 300 begins to contact the second latching tooth 368, and the multiple teeth of the first latching tooth 367 and the second latching tooth 368 are staggered and matched, and the nut 366 cannot rotate. At this time, the sliding connection seat 361 and the mounting seat 365 move leftward, which will drive the screw rod 350 to move leftward synchronously. The transmission of the a damping mechanism 300 and the lifting rod 240 is turned on.

[0052] When the lifting rod 240 moves upward to the third gear, the first latching tooth 367 in the b damping mechanism 300 begins to contact the second latching tooth 368, and the multiple teeth of the first latching tooth 367 and the second latching tooth 368 are staggered and matched, and the transmission of the b damping mechanism 300 and the lifting rod 240 is turned on. At this time, the first latching tooth 367 in the a damping mechanism 300 slides along the second latching tooth 368 and maintains the matching state with the second latching tooth 368. There are two sets of damping mechanisms 300 a and b that provide the electronic stethoscope 220 with a damping function.

[0053] When the lifting rod 240 moves upward to the fourth gear, the first latching tooth 367 in the c damping mechanism 300 begins to contact the second latching tooth 368, and the first latching tooth 367 and the second latching tooth 368 are staggered and matched, and the transmission of the c damping mechanism 300 and the lifting rod 240 is turned on. At this time, the first latching tooth 367 in the a damping mechanism 300 and the b damping mechanism 300 still slides along the second latching tooth 368 and maintains the matching state with the second latching tooth 368. There are three groups of damping mechanisms 300, abc, which provide the damping function for the electronic stethoscope 220.

[0054] Embodiment 4: This embodiment is an improvement on Embodiment 3. For details, please refer to Figure 2-Figure 10 The second transmission assembly 370 includes a connecting block 371 arranged at the other end of the damper 330, a rotation groove 372 is opened on the connecting block 371, and a limit block 373 is arranged at the other end of the screw rod 350. The screw rod 350 and the limit block 373 are rotatably connected in the rotation groove 372.

[0055] In this embodiment, when the lifting rod 240 is raised and lowered, the first latching tooth 367 and the second latching tooth 368 are in continuous contact and separation. The second latching tooth 368 is fixed in position, and the first latching tooth 367 rotates with the nut 366, so the teeth of the first latching tooth 367 may not always be aligned with the gaps between the teeth of the second latching tooth 368.

[0056] Therefore, the left and right ends of each tooth of the first latching tooth 367 and the second latching tooth 368 are set as sharp teeth. When the first latching tooth 367 moves to the left and contacts the second latching tooth 368, even if they are not aligned, due to the guidance of each sharp tooth, the first latching tooth 367 and the nut 366 will rotate a certain angle to complete the alignment. At this time, the nut 366 will drive the screw rod 350 to rotate a certain angle together.

[0057] The rotation groove 372 is a groove with a circular center and fan-shaped extensions on both sides. Two fan-shaped blocks, namely, limit blocks 373, extend from the screw rod 350, but the fan-shaped area of ​​the limit blocks 373 is smaller than the fan-shaped area of ​​the rotation groove 372. The rotation groove 372 and the limit blocks 373 play a role in limiting the position of the screw rod 350, so that it will be stuck with the inner wall of the rotation groove 372 after rotating a small angle. The screw rod 350 cannot continue to rotate. Therefore, when the first latching tooth 367 is not in contact with the second latching tooth 368, the screw rod 350 can remain stationary, allowing the nut 366 to move spirally on the screw rod 350.

[0058] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0059] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An intelligent arteriovenous fistula vascular murmur monitoring device, comprising an arm guard (100), characterized in that: The arm guard (100) is worn on the patient's arm. A plurality of monitoring mechanisms (200) are arranged on the arm guard (100). The monitoring mechanisms (200) include a first shell (210) and an electronic stethoscope (220). The electronic stethoscope (220) is used to be attached to the arteriovenous fistula of the patient's arm to monitor vascular murmurs. The first shell (210) is provided with a cylinder (230), a lifting rod (240) is slidably provided on the cylinder (230), a connecting ball (250) is provided on the lifting rod (240), and the connecting ball (250) is rotatably connected to the electronic stethoscope (220), and a plurality of vibration reduction mechanisms (300) are circumferentially provided on the first shell (210); When the patient is in motion, the vibration reduction mechanism (300) absorbs part of the energy generated by the vibration of the electronic stethoscope (220) and the lifting rod (240) to reduce vibration, and a plurality of the vibration reduction mechanisms (300) are connected to the lifting rod (240) step by step according to the vibration degree of the electronic stethoscope (220).

2. The intelligent arteriovenous fistula vascular murmur monitoring device according to claim 1, characterized in that: The vibration reduction mechanism (300) comprises a second shell (310) arranged on the cylinder (230), and a third knob (320) is arranged on the second shell (310); The vibration reduction mechanism (300) further comprises a damper (330) and a spring (340), one end of the damper (330) being connected to the third knob (320), the other end of the damper (330) being transmission-connected to the lifting rod (240), and two ends of the spring (340) being respectively connected to two ends of the damper (330); When the lifting rod (240) slides back and forth, it drives the damper (330) to expand and contract, and at this time, the lifting rod (240) and the electronic stethoscope (220) are damped by the damper (330) and the spring (340).

3. The intelligent arteriovenous fistula vascular murmur monitoring device according to claim 2, characterized in that: The vibration reduction mechanism (300) further comprises a screw rod (350), one end of which is transmission-connected to the lifting rod (240) via a first transmission assembly (360), and the other end of which is transmission-connected to the other end of the damper (330) via a second transmission assembly (370).

4. The intelligent arteriovenous fistula vascular murmur monitoring device according to claim 3 is characterized by: The first transmission assembly (360) comprises a sliding connection seat (361) slidably arranged on the second shell (310), and a fixed connection seat (362) is arranged on the lifting rod (240). The first transmission assembly (360) further comprises a connecting rod (363), and both ends of the connecting rod (363) are provided with rotating shafts (364), and the two rotating shafts (364) are respectively rotatably connected to the sliding connection seat (361) and the fixed connection seat (362).

5. The intelligent arteriovenous fistula vascular murmur monitoring device according to claim 4, characterized in that: The sliding connection seat (361) is provided with a mounting seat (365), and a nut (366) is rotatably provided on the mounting seat (365), and the nut (366) is threadedly connected to the screw rod (350).

6. The intelligent arteriovenous fistula vascular murmur monitoring device according to claim 5, characterized in that: The nut (366) is provided with a first latching tooth (367), and the second housing (310) is provided with a second latching tooth (368); When the first latching tooth (367) is engaged with the second latching tooth (368), the lifting rod (240) slides back and forth to drive the sliding connection seat (361) and the mounting seat (365) to move back and forth, the mounting seat (365) drives the nut (366) and the screw rod (350) to move back and forth, and the screw rod (350) drives the damper (330) to extend and retract; When the first latching tooth (367) is not in contact with the second latching tooth (368), the lifting rod (240) slides back and forth to drive the sliding connection seat (361) and the mounting seat (365) to move back and forth, and the mounting seat (365) drives the nut (366) to move spirally on the screw rod (350), and the screw rod (350) and the damper (330) are stationary.

7. The intelligent arteriovenous fistula vascular murmur monitoring device according to claim 6, characterized in that: The lengths of several second latch teeth (368) in several vibration damping mechanisms (300) decrease in sequence in the counterclockwise direction, one end of several second latch teeth (368) is at an equal distance from the central axis of the first shell (210), and the distances of the other end of several second latch teeth (368) from the central axis of the first shell (210) increase in sequence in the counterclockwise direction.

8. The intelligent arteriovenous fistula vascular murmur monitoring device according to claim 3, characterized in that: The second transmission assembly (370) comprises a connecting block (371) arranged at the other end of the damper (330), a rotation groove (372) being provided on the connecting block (371), a limit block (373) being provided at the other end of the screw rod (350), and the screw rod (350) and the limit block (373) being rotatably connected in the rotation groove (372).

9. The intelligent arteriovenous fistula vascular murmur monitoring device according to claim 1, characterized in that: Both ends of the arm guard (100) are provided with binding straps (110), and the two binding straps (110) are bonded together by Velcro (120); The monitoring mechanism (200) further comprises a bellows (290), wherein two ends of the bellows (290) are respectively connected to the first housing (210) and the electronic stethoscope (220); A first knob (260) is threadedly mounted on the first shell (210), and the first knob (260) is rotatably connected to the cylinder (230). The height of the electronic stethoscope (220) and the cylinder (230) is adjusted by the first knob (260).

10. The intelligent arteriovenous fistula vascular murmur monitoring device according to claim 1, characterized in that: The monitoring mechanism (200) further comprises a rotating disk (270), the rotating disk (270) being rotatably connected to the protective arm (100), the first housing (210) being mounted on the rotating disk (270), and the first housing (210) being located at a position deviating from the center of the rotating disk (270), and a second knob (280) being arranged at the center of the rotating disk (270); The turntable (270) is rotated to adjust the horizontal positions of the electronic stethoscope (220) and the cylinder (230) to fit the patient's arteriovenous fistula.

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