An intelligent arteriovenous fistula vascular murmur monitoring device

Abstract

The present invention relates to the technical field of medical devices, and discloses an intelligent arteriovenous fistula vascular murmur monitoring device, which includes an arm guard worn on the patient's arm. A number of monitoring mechanisms are provided on the arm guard. The monitoring mechanism includes a first housing and an electronic stethoscope. The electronic stethoscope is used to be attached to the arteriovenous fistula on the patient's arm to monitor vascular murmurs; a cylinder is provided on the first housing, 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. A number of vibration damping mechanisms are circumferentially provided on the first housing. This intelligent arteriovenous fistula vascular murmur monitoring device wears multiple electronic stethoscopes on the arm close to the body along with the arm guard to monitor and record the entire arteriovenous fistula in real time, and has a segmented vibration damping function, effectively monitoring the murmur of the patient during movement while maintaining the wearing comfort as much as possible.

Description

Technical Field

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

[0002] For patients suffering from renal failure and other diseases that require long-term hemodialysis, establishing a stable and effective vascular access is crucial. 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, for example, anastomosing the radial artery and the cephalic vein. During hemodialysis, medical staff can insert puncture needles into the arterial end and venous end of the internal fistula respectively to draw out the blood in the body. After being purified by the dialysis machine, it is then transfused back into the body.

[0003] After the formation of the internal fistula, arterial blood flows through the internal fistula venous blood vessel through the anastomosis. Its movement mode changes from relative laminar flow to turbulent flow and impacts the venous blood vessel wall to produce a murmur, which sounds like "blowing wind". The successful establishment and good maintenance of the hemodialysis internal fistula have an important impact on the treatment effect and quality of life of patients. Therefore, it is necessary to regularly monitor the vascular murmur of the arteriovenous fistula. For a newly established internal fistula, within one week after the operation, the murmur at the surgical wound (anastomosis) should be louder day by day. If the murmur weakens day by day, the pitch of the murmur increases significantly or the murmur disappears, the internal fistula may be stenotic or even occluded.

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

[0005] Therefore, 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 beneficial effects of wearing multiple electronic stethoscopes on the arm close to the body to monitor and record the entire arteriovenous fistula in real time, and having a segmented vibration damping function. While maintaining the wearing comfort as much as possible, it can also effectively monitor the murmur of patients during movement, solving the problems in the prior art mentioned in the above background art. The method for monitoring the vascular murmur of the arteriovenous fistula usually relies on manual listening with ears and fingers or using a stethoscope attached to the internal fistula. On the one hand, manual listening cannot effectively monitor the momentary changes of the vascular murmur of the internal fistula in real time. On the other hand, the accuracy of manual listening is relatively low and it cannot be recorded.

[0007] The present invention provides the following technical solution: An intelligent arteriovenous fistula vascular murmur monitoring device, including an arm guard, which is worn on the patient's arm. A number of monitoring mechanisms are provided on the arm guard. The monitoring mechanism includes a first housing and an electronic stethoscope, and the electronic stethoscope is used to be attached to the arteriovenous fistula on the patient's arm to monitor vascular murmurs;

[0008] A cylinder body is provided on the first housing. A lifting rod is slidably provided on the cylinder body. A connecting ball is provided on the lifting rod, and the connecting ball is rotatably connected to the electronic stethoscope. A number of vibration damping mechanisms are circumferentially provided on the first housing;

[0009] When the patient is in a moving state, part of the energy generated by the vibration of the electronic stethoscope and the lifting rod is absorbed by the vibration damping mechanism for vibration damping, and a number of the vibration damping mechanisms are connected to the lifting rod step by step along with the vibration degree of the electronic stethoscope.

[0010] As an optional solution of the intelligent arteriovenous fistula vascular murmur monitoring device of the present invention, wherein: the vibration damping mechanism includes a second housing provided on the cylinder body, and a third knob is provided on the second housing;

[0011] The vibration damping 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 in transmission connection with the lifting rod, and both ends of the spring are respectively connected to both ends of the damper;

[0012] When the lifting rod reciprocally slides, it drives the damper to expand and contract. At this time, the lifting rod and the electronic stethoscope are vibration-damped by the damper and the spring.

[0013] As an optional solution of the intelligent arteriovenous fistula vascular murmur monitoring device of the present invention, wherein: the vibration damping mechanism further includes a screw rod. One end of the screw rod is in transmission connection with the lifting rod through a first transmission assembly, and the other end of the screw rod is in transmission connection with the other end of the damper through a second transmission assembly.

[0014] As an optional solution of the intelligent arteriovenous fistula vascular murmur monitoring device of the present invention, wherein: the first transmission assembly includes a sliding connection seat slidably provided on the second housing, a fixed connection seat is provided on the lifting rod, and the first transmission assembly further includes a connecting rod. Rotating shafts are provided at both ends of the connecting rod, and the two rotating shafts are respectively rotatably connected to the sliding connection seat and the fixed connection seat.

[0015] As an alternative solution of the intelligent arteriovenous fistula blood vessel murmur monitoring device described in the present invention, wherein: an installation seat is arranged on the sliding connection seat, and a nut is rotatably arranged on the installation seat, and the nut is threadedly connected to the screw rod.

[0016] As an alternative solution of the intelligent arteriovenous fistula blood vessel murmur monitoring device described in the present invention, wherein: a first engaging tooth is arranged on the nut, and a second engaging tooth is arranged in the second shell;

[0017] When the first engaging tooth engages with the second engaging tooth, the reciprocating sliding of the lifting rod drives the sliding connection seat and the installation seat to reciprocate, the installation seat drives the nut and the screw rod to reciprocate, and the screw rod drives the damper to expand and contract;

[0018] When the first engaging tooth is not in contact with the second engaging tooth, the reciprocating sliding of the lifting rod drives the sliding connection seat and the installation seat to reciprocate, the installation seat drives the nut to spiral move on the screw rod, and the screw rod and the damper are stationary.

[0019] As an alternative solution of the intelligent arteriovenous fistula blood vessel murmur monitoring device described in the present invention, wherein: the lengths of several of the second engaging teeth in several of the damping mechanisms decrease in the counterclockwise direction, one ends of several of the second engaging teeth are equidistant from the central axis of the first shell, and the distances of the other ends of several of the second engaging teeth from the central axis of the first shell increase in the counterclockwise direction.

[0020] As an alternative solution of the intelligent arteriovenous fistula blood vessel murmur monitoring device described in the present invention, wherein: the second transmission assembly includes a connecting block arranged at the other end of the damper, a rotating groove is formed in 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.

[0021] As an alternative solution of the intelligent arteriovenous fistula blood vessel murmur monitoring device described in the present invention, wherein: straps are arranged at both ends of the arm guard, and the two straps are adhered by a magic tape;

[0022] The monitoring mechanism further includes a corrugated pipe, and both ends of the corrugated pipe are respectively connected to the first shell and the electronic stethoscope;

[0023] A first knob is threadedly installed on the first shell, the first knob is rotatably connected to the cylinder body, and the height of the electronic stethoscope and the cylinder body is adjusted by the first knob.

[0024] As an optional solution of the intelligent arteriovenous fistula vascular murmur monitoring device of the present invention, wherein: the monitoring mechanism further includes a turntable, the turntable is rotatably connected to the guard arm, the first shell is mounted on the turntable, and the first shell is located at a position offset from the center of the turntable, and a second knob is provided at the center of the turntable;

[0025] The horizontal positions of the electronic stethoscope and the cylinder are adjusted by rotating the turntable to fit the patient's arteriovenous fistula.

[0026] The present invention has the following beneficial effects:

[0027] This intelligent arteriovenous fistula murmur monitoring device, mounted on an electronic stethoscope and worn on the patient's arm, intelligently monitors arteriovenous fistula murmurs. This device is more convenient than manual monitoring with a stethoscope or ear, allowing for real-time monitoring and recording. Furthermore, electronic monitoring also records the tone and volume, making it more accurate than listening with the ear.

[0028] 2. This intelligent arteriovenous fistula murmur monitoring device monitors arteriovenous fistula murmurs. Because murmurs vary from one location to another, a row of electronic stethoscopes mounted on the armrest monitors the entire arteriovenous fistula. The positions of the multiple electronic stethoscopes can be adjusted to accommodate the location of the fistula in different patients.

[0029] 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 the motion state.

[0030] Multiple vibration-damping mechanisms are provided, and their damping functions are activated and deactivated in stages. When the arm's shaking amplitude is small, only one damping mechanism is used to provide vibration reduction, and the electronic stethoscope does not press too tightly on the arm. As the arm's movement amplitude increases, the remaining damping mechanisms gradually activate their damping functions. This achieves multi-level intelligent vibration reduction while maintaining wearing comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic structural diagram of the present invention as a whole.

[0032] Figure 2 It is a schematic cross-sectional structural diagram of the arm guard in the present invention.

[0033] Figure 3 For the present invention Figure 2 Schematic diagram of the locally enlarged structure at point A in the middle.

[0034] Figure 4 Schematic cross-sectional structure diagram of the first housing in the present invention.

[0035] Figure 5 In the present invention Figure 4 Schematic diagram of the enlarged partial structure at position B in the present invention.

[0036] Figure 6 In the present invention Figure 4 Schematic diagram of the enlarged partial structure at position C in the present invention.

[0037] Figure 7 Schematic explosion structure diagram of the monitoring mechanism in the present invention.

[0038] Figure 8 Schematic structure diagram of the monitoring mechanism and the shock absorption mechanism in the present invention.

[0039] Figure 9 Schematic explosion structure diagram of several groups of shock absorption mechanisms in the present invention.

[0040] Figure 10 Schematic explosion structure diagram of a single group of shock absorption mechanisms in the present invention.

[0041] In the figure: 100, arm guard; 110, strap; 120, Velcro; 200, monitoring mechanism; 210, first housing; 220, electronic stethoscope; 230, cylinder; 240, lifting rod; 250, connecting ball; 260, first knob; 270, turntable; 280, second knob; 290, bellows; 300, shock absorption mechanism; 310, second housing; 320, third knob; 330, damper; 340, spring; 350, screw; 360, first transmission component; 361, sliding connection seat; 362, fixed connection seat; 363, connecting rod; 364, rotating shaft; 365, mounting seat; 366, nut; 367, first tooth; 368, second tooth; 370, second transmission component; 371, connecting block; 372, rotating groove; 373, limiting block. Detailed implementation manners

[0042] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0043] Example 1, please refer to Figures 1 - 2, An intelligent arteriovenous fistula vascular murmur monitoring device, including an arm guard 100, which is worn on the patient's arm. A number of monitoring mechanisms 200 are provided on the arm guard 100. The monitoring mechanism 200 includes a first housing 210 and an electronic stethoscope 220. The electronic stethoscope 220 is used to stick on the arteriovenous fistula of the patient's arm to monitor the vascular murmur;

[0044] A cylinder 230 is provided on the first housing 210. A lifting rod 240 is slidably provided on the cylinder 230. A connecting ball 250 is provided on the lifting rod 240. The connecting ball 250 is rotatably connected to the electronic stethoscope 220. A number of damping mechanisms 300 are circumferentially provided on the first housing 210;

[0045] When the patient is in a moving state, part of the energy generated by the vibration of the electronic stethoscope 220 and the lifting rod 240 is absorbed by the damping mechanism 300 for damping, and a number of damping mechanisms 300 are successively connected to the lifting rod 240 along with the vibration degree of the electronic stethoscope 220;

[0046] Both ends of the arm guard 100 are provided with straps 110, and the two straps 110 are adhered by a magic tape 120;

[0047] The monitoring mechanism 200 further includes a corrugated pipe 290, and both ends of the corrugated pipe 290 are respectively connected to the first housing 210 and the electronic stethoscope 220;

[0048] A first knob 260 is threadedly installed on the first housing 210. 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;

[0049] The monitoring mechanism 200 further includes a turntable 270. The turntable 270 is rotatably connected to the arm guard 100. The first housing 210 is installed on the turntable 270, and the first housing 210 is located at a position deviating from the center of the turntable 270. A second knob 280 is provided at the center of the turntable 270;

[0050] The horizontal position of the electronic stethoscope 220 and the cylinder 230 is adjusted by rotating the turntable 270 to fit the arteriovenous fistula of the patient.

[0051] In this embodiment: The arm guard 100 can be made of flexible materials such as leather, and can be inflated inside to improve the wearing comfort, and at the same time has a certain elasticity to better fit on the arm. The two straps 110 surround the patient's arm in a circle and are adhered by the magic tape 120 to fix the position of the arm guard 100.

[0052] A row of monitoring mechanisms 200 are mounted along the arm's length on the arm guard 100. The lower end of the first housing 210 is connected to the electronic stethoscope 220 via a lifting rod 240 and a bellows 290. A connecting ball 250 mounted on the lifting rod 240 connects to the electronic stethoscope 220 in a manner similar to a ball stud and a ball socket. The electronic stethoscope 220 can be rotated and moved at various angles while attached to the arm. The movement of the electronic stethoscope 220 drives the lifting rod 240 up and down.

[0053] The first knob 260 will spiral up or down when it rotates forward or backward. The first knob 260 spirals up and drives the cylinder 230 to rise, and the first knob 260 spirals down and drives the cylinder 230 to fall. 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 fit between the electronic stethoscope 220 and the arm.

[0054] Turning the second knob 280 rotates the turntable 270, causing the first housing 210 and the electronic stethoscope 220 to move in a circular motion to adjust their positions. Because the distribution and angle of fistulas vary from patient to patient, each second knob 280 can be turned individually to ensure that each electronic stethoscope 220 covers the entire blood vessel.

[0055] Electronic stethoscope 220 can amplify vascular murmurs through a speaker or convert them into electrical signals for output. This can then be connected to a mobile app to record the real-time internal fistula murmurs. As a conventional technology, the specific structure and operating principle of electronic stethoscope 220 will not be described in detail.

[0056] Traditional stethoscopes require the arm to remain still during measurement, and are unable to monitor the fistula blood vessels during exercise. Therefore, the electronic stethoscope 220 is also equipped with a vibration reduction measure so that the patient can also monitor the fistula blood vessel murmur when exercising.

[0057] Example 2: This example is an improvement based on Example 1. For details, please refer to Figures 2 - 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 ;

[0058] 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 , and the other end of the damper 330 is in transmission connection with the lifting rod 240 . Both ends of the spring 340 are respectively connected to both ends of the damper 330 .

[0059] 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 .

[0060] In this embodiment, when the arm performs various movements, the lifting rod 240 moves up and down due to acceleration and inertia. This frequent displacement generates vibrations that are then transmitted to the damper 330 and spring 340. The damper 330 and spring 340 compress and rebound, absorbing some of the energy generated by the vibrations. This energy absorption and release reduces the amplitude and frequency of the lifting rod 240's vibrations, thereby reducing the sway of the electronic stethoscope 220 and maintaining relative stability for both the electronic stethoscope 220 and the arm.

[0061] Damper 330 can be hydraulic or pneumatic. Its principle is to convert kinetic energy from motion into heat through friction or viscosity, thereby dissipating excess energy. Damper 330 typically consists of a sealed liquid or gas, a piston, and a spring. When vibration occurs, the liquid or gas inside damper 330 is forced to flow, creating resistance and reducing the amplitude of the vibration.

[0062] In addition, the third knob 320 can also be threadedly mounted on the second housing 310, and the left end of the damper 330 can be 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.

[0063] The elastic force of the damper 330 and the spring 340 can support the lifting rod 240 and the electronic stethoscope 220 in the initial position when no external force is applied, and can help the lifting rod 240 and the electronic stethoscope 220 to reset after being subjected to force.

[0064] Example 3: This example is an improvement based on Example 2. For details, please refer to Figures 1 - 10 The vibration reduction mechanism 300 further includes a screw 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 350 is transmission-connected to the other end of the damper 330 via a second transmission assembly 370 ;

[0065] The first transmission assembly 360 includes a sliding connection base 361 slidably disposed on the second housing 310, a fixed connection base 362 disposed on the lifting rod 240, and a connecting rod 363. Both ends of the connecting rod 363 are provided with a rotating shaft 364. The two rotating shafts 364 are rotatably connected to the sliding connection base 361 and the fixed connection base 362 respectively.

[0066] The sliding connection seat 361 is provided with a mounting seat 365 , and the mounting seat 365 is rotatably provided with a nut 366 , and the nut 366 is threadedly connected to the screw rod 350 ;

[0067] The first engaging teeth 367 are provided on the nut 366, and the second engaging teeth 368 are provided in the second housing 310;

[0068] When the first engaging teeth 367 are engaged with the second engaging teeth 368, the reciprocating sliding of the lifting rod 240 drives the sliding connection seat 361 and the mounting seat 365 to reciprocate, the mounting seat 365 drives the nut 366 and the screw rod 350 to reciprocate, and the screw rod 350 drives the damper 330 to expand and contract;

[0069] When the first engaging teeth 367 are not in contact with the second engaging teeth 368, the reciprocating sliding of the lifting rod 240 drives the sliding connection seat 361 and the mounting seat 365 to reciprocate, 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;

[0070] The lengths of the second engaging teeth 368 in several damping mechanisms 300 decrease in sequence in the counterclockwise direction, one ends of the second engaging teeth 368 are equidistant from the central axis of the first housing 210, and the other ends of the second engaging teeth 368 are increasingly distant from the central axis of the first housing 210 in the counterclockwise direction.

[0071] In this embodiment: Since the damper 330 and the spring 340 damp the lifting rod 240 and the electronic stethoscope 220, the electronic stethoscope 220 will exert a certain pressure on the arm in the reverse direction, increasing the discomfort of the patient. Therefore, a plurality of damping mechanisms 300 are circumferentially arranged, and the plurality of damping mechanisms 300 are segmented and opened according to the shaking degree of the patient's arm and the electronic stethoscope 220.

[0072] As shown in the figure, it is assumed that there are three damping mechanisms 300, and the damping mechanism 300 on the left is set as a in the counterclockwise order, the damping mechanism 300 on the right front side is set as b, and the damping mechanism 300 on the right rear side is set as c.

[0073] In the damping mechanism 300, the transmission between the damper 330 and the lifting rod 240 is an openable and closable transmission structure. When the arm is stationary or has a small movement amplitude, the a damping mechanism 300 is initially opened for transmission, and at this time, a set of damper 330 and spring 340 provide damping effect. As the shaking amplitude of the arm increases and the upward movement amplitude of the lifting rod 240 increases, the b damping mechanism 300 will also be opened for transmission, and at this time, two sets of damper 330 and spring 340 provide damping effect. As the shaking amplitude of the arm further increases, the c damping mechanism 300 will also be opened for transmission, and at this time, three sets of damper 330 and spring 340 provide damping effect.

[0074] 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 are the longest, the second latching teeth 368 of the vibration reduction mechanism 300 b are the second longest, and the second latching teeth 368 of the vibration reduction mechanism 300 c are the shortest.

[0075] When the lifting rod 240 reaches the first level of upward movement, the upward movement of the lifting rod 240 drives the sliding connection seat 361 away from the center of the first housing 210 through the transmission of the sliding connection seat 361, the fixed connection seat 362, and the connecting rod 363. At this time, none of the first latching teeth 367 in the three groups abc contact 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 leftward with the sliding connection seat 361, and the nut 366 rotates relative to the mounting seat 365, that is, the nut 366 moves leftward in a spiral. At this time, the upward movement of the lifting rod 240 drives the sliding connection seat 361 to the left, but does not drive the screw rod 350 to move.

[0076] When the lifting rod 240 moves upward to the second level, the first latching tooth 367 of the vibration damping mechanism 300 begins to contact the second latching tooth 368. The teeth of the first latching tooth 367 and the second latching tooth 368 interlock, preventing the nut 366 from rotating. At this time, the leftward movement of the sliding connection seat 361 and the mounting seat 365 drives the screw rod 350 to move leftward synchronously, thus activating the transmission between the vibration damping mechanism 300 and the lifting rod 240.

[0077] When the lifting rod 240 moves upward to the third level, the first latching tooth 367 in the vibration damping mechanism b 300 begins to contact the second latching tooth 368. The teeth of the first latching tooth 367 and the second latching tooth 368 interlock, activating the transmission between the vibration damping mechanism b 300 and the lifting rod 240. At this point, the first latching tooth 367 in the vibration damping mechanism a 300 slides along the second latching tooth 368, maintaining its engagement with the second latching tooth 368. Thus, two sets of vibration damping mechanisms 300, ab, provide vibration damping for the electronic stethoscope 220.

[0078] When the lifting rod 240 moves upward to the fourth level, the first latching tooth 367 in the vibration damping mechanism 300 (c) begins to contact the second latching tooth 368. The teeth of the first latching tooth 367 and the second latching tooth 368 interlock, activating the transmission between the vibration damping mechanism 300 and the lifting rod 240. At this point, the first latching tooth 367 in the vibration damping mechanism 300 (a) and the vibration damping mechanism 300 (b) continue to slide along the second latching tooth 368, maintaining engagement with the second latching tooth 368. Thus, three vibration damping mechanisms 300 (a, b, c) provide vibration damping for the electronic stethoscope 220.

[0079] Example 4: This example is an improvement made on the basis of Example 3. For details, please refer to Figures 2 - 10, the second transmission component 370 includes a connection block 371 provided at the other end of the damper 330. A rotating groove 372 is formed in the connection block 371. The other end of the screw 350 is provided with a limiting block 373, and the screw 350 and the limiting block 373 are rotatably connected in the rotating groove 372.

[0080] In this embodiment: when the lifting rod 240 rises and then falls, the first cogs 367 and the second cogs 368 continuously contact and separate. The position of the second cogs 368 is fixed, and the first cogs 367 rotate with the nut 366. Therefore, several teeth of the first cogs 367 may not be able to align with the gaps between several teeth of the second cogs 368 every time.

[0081] Therefore, the left and right ends of each tooth of the first cogs 367 and the second cogs 368 are both set as pointed teeth. When the first cogs 367 move leftward to contact the second cogs 368, even if they are not aligned, due to the guiding of each pointed tooth, the first cogs 367 and the nut 366 will rotate a certain angle to complete alignment. At this time, the nut 366 will drive the screw 350 to rotate a certain angle together.

[0082] The rotating groove 372 is a groove with a circular middle part and fan-shaped parts extending on both sides. Two fan-shaped blocks, namely the limiting blocks 373, extend from the screw 350, but the fan-shaped area of the limiting blocks 373 is smaller than the fan-shaped part area of the rotating groove 372. The rotating groove 372 and the limiting blocks 373 play a role in limiting the screw 350, so that it will get stuck with the inner wall of the rotating groove 372 after rotating a small angle. The screw 350 cannot continue to rotate. Thus, when the first cogs 367 do not contact the second cogs 368, the screw 350 can remain stationary, enabling the nut 366 to move spirally on the screw 350.

[0083] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0084] The above is only the preferred embodiment of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. An intelligent arteriovenous fistula blood vessel murmur monitoring device, comprising an arm guard (100), characterized in that: The arm guard (100) is worn on the patient's arm. A number of monitoring mechanisms (200) are provided on the arm guard (100). The monitoring mechanism (200) includes a first housing (210) and an electronic stethoscope (220). The electronic stethoscope (220) is used to monitor vascular murmurs by being attached to the arteriovenous fistula on the patient's arm. A cylinder (230) is provided on the first housing (210). A lifting rod (240) is slidably provided on the cylinder (230). A connecting ball (250) is provided on the lifting rod (240). The connecting ball (250) is rotatably connected to the electronic stethoscope (220). A number of vibration damping mechanisms (300) are circumferentially provided on the first housing (210). When the patient is in a moving state, part of the energy generated by the vibration of the electronic stethoscope (220) and the lifting rod (240) is absorbed by the vibration damping mechanism (300) for vibration damping, and a number of the vibration damping mechanisms (300) are sequentially connected to the lifting rod (240) along with the vibration degree of the electronic stethoscope (220).

2. The intelligent arteriovenous fistula vascular murmur monitoring device according to claim 1, wherein: The vibration damping mechanism (300) includes a second housing (310) provided on the cylinder (230). A third knob (320) is provided on the second housing (310). The vibration damping 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 in transmission connection with the lifting rod (240). Both ends of the spring (340) are respectively connected to both ends of the damper (330). When the lifting rod (240) reciprocally slides, it drives the damper (330) to expand and contract. At this time, the lifting rod (240) and the electronic stethoscope (220) are vibration-damped by the damper (330) and the spring (340).

3. The intelligent arteriovenous fistula vascular murmur monitoring device according to claim 2, wherein: The vibration damping mechanism (300) further includes a screw rod (350). One end of the screw rod (350) is in transmission connection with the lifting rod (240) through a first transmission assembly (360). The other end of the screw rod (350) is in transmission connection with the other end of the damper (330) through a second transmission assembly (370).

4. The intelligent arteriovenous fistula blood vessel murmur monitoring device according to claim 3, wherein: The first transmission assembly (360) includes a sliding connection seat (361) slidably provided on the second housing (310). A fixed connection seat (362) is provided on the lifting rod (240). The first transmission assembly (360) further includes a connecting rod (363). Rotating shafts (364) are provided at both ends of the connecting rod (363). 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: An installation seat (365) is provided on the sliding connection seat (361). A nut (366) is rotatably provided on the installation seat (365). The nut (366) is threadedly connected to the screw rod (350).

6. The intelligent arteriovenous fistula vascular murmur monitoring device according to claim 5, wherein: A first engaging tooth (367) is provided on the nut (366), and a second engaging tooth (368) is provided in the second housing (310); When the first engaging tooth (367) engages with the second engaging tooth (368), the lifting rod (240) reciprocally slides to drive the sliding connection seat (361) and the mounting seat (365) to reciprocally displace. The mounting seat (365) drives the nut (366) and the screw rod (350) to reciprocally displace, and the screw rod (350) drives the damper (330) to expand and contract; When the first engaging tooth (367) is not in contact with the second engaging tooth (368), the lifting rod (240) reciprocally slides to drive the sliding connection seat (361) and the mounting seat (365) to reciprocally displace. The mounting seat (365) drives the nut (366) to helically move 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 of the second engaging teeth (368) in several of the damping mechanisms (300) sequentially decrease in the counterclockwise direction. One ends of several of the second engaging teeth (368) are equidistant from the central axis of the first housing (210), and the distances of the other ends of several of the second engaging teeth (368) from the central axis of the first housing (210) sequentially increase in the counterclockwise direction.

8. An intelligent arteriovenous fistula vascular murmur monitoring device according to claim 3, characterized in that: The second transmission assembly (370) includes a connection block (371) provided at the other end of the damper (330). A rotating groove (372) is formed in the connection block (371). A limiting block (373) is provided at the other end of the screw rod (350), and the screw rod (350) and the limiting block (373) are rotatably connected in the rotating groove (372).

9. The intelligent arteriovenous fistula vascular murmur monitoring device according to claim 1, wherein: Both ends of the protective arm (100) are provided with straps (110), and the two straps (110) are adhered by a magic tape (120); The monitoring mechanism (200) further includes a corrugated pipe (290), and both ends of the corrugated pipe (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). The first knob (260) is rotatably connected to the cylinder body (230), and the height of the electronic stethoscope (220) and the cylinder body (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 includes a turntable (270). The turntable (270) is rotatably connected to the protective arm (100). The first housing (210) is mounted on the turntable (270), and the first housing (210) is located at a position deviating from the center of the turntable (270). A second knob (280) is provided at the center of the turntable (270); The horizontal positions of the electronic stethoscope (220) and the cylinder body (230) are adjusted by rotating the turntable (270) to fit the arteriovenous fistula of the patient.

Images