Portable internal arteriovenous fistula auscultation terminal and auscultation system

Abstract

The invention relates to the technical field of medical instruments, and discloses a portable internal arteriovenous fistula auscultation terminal and auscultation system.The portable internal arteriovenous fistula auscultation terminal comprises a machine body box, a control box is fixedly mounted in the middle of the upper end face of the machine body box, mounting boxes are fixedly mounted on the front end face and the rear end face of the machine body box, and limiting rods are slidably mounted on the front side and the rear side of the lower end face of the machine body box; the device further comprises supporting mechanisms, and the supporting mechanisms are arranged on the front side and the rear side of the left side wall and the right side wall of the device body box. The adjusting mechanisms are arranged on the front side and the rear side of the inner cavity of the machine body box; the adsorption mechanisms are arranged on the left side and the right side of the side wall of the machine body box; and a buffer mechanism. Through the arrangement of the adjusting mechanism, the distance between the supporting rods on the two sides can be adjusted so as to be suitable for users of different figures to use, and through the arrangement of the supporting mechanism, the adsorption mechanism and the like, the whole device can be stably placed on a table top so as to improve the stability of the whole device during use.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a portable arteriovenous fistula auscultation terminal and auscultation system. Background Art

[0002] Arteriovenous fistula is an arteriovenous surgical procedure, mainly used in hemodialysis treatment. Arteriovenous fistula is a surgical procedure, mainly used in hemodialysis treatment. Arteriovenous fistula is a minor vascular anastomosis surgery, in which the artery and the adjacent vein in the forearm near the wrist are sutured so that arterial blood flows in the anastomosed vein, forming an arteriovenous fistula. The blood vessels of the arteriovenous fistula can provide sufficient blood for hemodialysis treatment, providing a guarantee for the adequacy of dialysis treatment. Arteriovenous fistula is the lifeline of patients with renal failure. The patency of the fistula directly determines the success and quality of dialysis for patients with renal failure. Before undergoing hemodialysis, patients with renal failure usually need to rely on medical staff to use an ordinary stethoscope to assist in judging the patency of the arteriovenous fistula. The louder the vascular vibratory sound heard in the arteriovenous fistula, the better the patency. Because the auscultation area of ​​a conventional stethoscope is flat and poorly fits the patient's wrist, the vascular tremor heard is small or absent. This prevents medical staff from promptly assessing the condition of the arteriovenous fistula, hindering further treatment. Furthermore, each patient's arm is of varying thickness, requiring tailored fit to meet individual patient needs. Therefore, a portable arteriovenous fistula auscultation terminal and system are urgently needed to address these issues. Summary of the Invention

[0003] The object of the present invention is to provide a portable arteriovenous fistula auscultation terminal and auscultation system to solve the problems raised in the above background technology.

[0004] To achieve the above objectives, the present invention provides the following technical solutions: a portable arteriovenous fistula auscultation terminal and auscultation system, comprising a body box, a control box fixedly mounted in the middle of the upper end surface of the body box, a mounting box fixedly mounted on the front and rear end surfaces of the body box, a lower end surface of the body box configured as an arc surface, limit rods slidably mounted on the front and rear sides of the lower end surface of the body box, an application pad fixedly mounted on the lower end surface of the limit rod, and further comprising: A support mechanism is provided on the front and rear sides of the left and right side walls of the body box, and is used to provide support for the body box; An adjustment mechanism is provided on the front and rear sides of the inner cavity of the body box, and is used to adjust the distance between the support mechanisms on both sides; Adsorption mechanism, the adsorption mechanism is arranged on the left and right sides of the side wall of the body box, and the adsorption mechanism is used to improve the stability of the support mechanism; A buffer mechanism is provided in the inner cavity of the control box and is used to ensure that the patch pad is stably attached to the arm.

[0005] Preferably, the support mechanism includes a connecting rod slidably mounted on the left and right end faces of the body box, and an air storage hood fixedly mounted on the side wall of the connecting rod, the lower end face of the air storage hood is slidably mounted with a support sleeve, the inner cavity of the support sleeve is threadedly mounted with a support rod, and the lower end face of the support rod is fixedly mounted with a foot pad cover.

[0006] Preferably, the adjustment mechanism includes a positioning sleeve rotatably installed on the front and rear sides of the inner cavity of the body box, and positioning rods are slidably installed on the left and right sides of the positioning sleeve. The outer end thread of the positioning rod passes through the body box and is rotatably connected to the air storage cover, and an adjusting worm gear is fixedly installed in the middle of the side wall of the positioning sleeve.

[0007] Preferably, an adjusting motor is fixedly installed on the bottom surface of the inner cavity of the installation box through a frame, and an adjusting worm is fixedly installed on the output shaft end of the adjusting motor through the installation box. The adjusting worm is meshed with the adjusting worm wheel, and the left and right ends of the positioning rod have opposite thread directions.

[0008] Preferably, the adsorption mechanism includes a piston plate slidably mounted in the inner cavity of the air storage cover, the support sleeve is fixedly mounted on the lower end surface of the piston plate, the inner cavity of the support rod is provided with a connecting channel, the upper side wall of the support sleeve is provided with an air inlet hole, the support sleeve is connected with the foot pad cover through the air inlet hole and the connecting channel, and an adsorption spring is wrapped around the upper side wall of the support sleeve, one end of the adsorption spring is fixedly mounted on the lower end surface of the piston plate, and the other end is fixedly mounted on the bottom surface of the inner cavity of the air storage cover.

[0009] Preferably, the inner cavity of the connecting channel is provided with a one-way air valve with an outlet to the lower cavity of the air storage cover, the outer wall of the air storage cover is provided with an air outlet, and the inner cavity of the air outlet is provided with a one-way air valve with an outlet to the outside.

[0010] Preferably, the buffer mechanism includes a buffer plate slidably mounted in the inner cavity of the control box, and an extension rod fixedly mounted on the lower end surface of the buffer plate, a buffer spring is wound around the side wall of the extension rod, and a sliding groove is provided on the rear end surface of the control box.

[0011] Preferably, the extension rod is fixedly mounted on the upper end surface of the application pad, one end of the buffer spring is fixedly mounted on the bottom surface of the inner cavity of the air storage cover, the other end of the buffer spring is fixedly mounted on the lower end surface of the buffer plate, and the upper end surface of the buffer plate is fixedly mounted with a PCB circuit board.

[0012] Preferably, a sound guide tube is fixedly installed on the rear side of the upper end surface of the buffer plate, a sound storage device is fixedly installed on the end of the sound guide tube, a stethoscope head is fixedly installed on the side wall of the sound storage device, a battery is fixedly installed on the front side of the upper end surface of the body box, a display is fixedly installed on the upper end surface of the control box, a pickup is fixedly installed on the side wall of the inner cavity of the application pad, the display, PCB circuit board, sound storage device and battery are electrically connected, the sound guide tube slides in the inner cavity of the slide groove, and a winding post is fixedly installed on the rear side of the upper end surface of the body box.

[0013] A stethoscope system for a portable arteriovenous fistula stethoscope terminal includes a stethoscope system module, which is composed of a microprocessor, a power module, an amplifying circuit module, and a signal transmission module. The microprocessor, power module, amplifying circuit module, and signal transmission module are all fixedly mounted on the upper end surface of a PCB circuit board, and the pickup, sound guide tube, power module, amplifying circuit module, and signal transmission module are all electrically connected to the microprocessor.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. In this invention, medical staff can start the adjustment motor to drive the adjustment worm to rotate the adjustment worm wheel. Since the adjustment worm wheel is fixedly connected to the positioning sleeve, the positioning sleeve can drive the positioning rod to rotate. The positioning rod is threadedly connected to the body box. The left and right ends of the positioning rod have opposite thread directions. Under the constraint of multiple sets of limit rods, the positioning rod will shrink toward the inner cavity of the positioning sleeve. At this time, the distance between the air storage covers on the left and right sides will change, so as to adjust the support distance of the foot pad cover; the support sleeve is threadedly connected to the support rod, and the medical staff can lock the support sleeve with one hand and rotate the support rod with the other hand to adjust the height of the air storage cover, so that the entire device can be suitable for people with different arm thicknesses, which greatly improves the practicality of the entire device.

[0015] 2. In this invention, after the medical staff adjusts the height of the body box, they place the patient's arm on the table, and then place the entire device above the patient's arm. At this time, the footrest cover will rest on the table. Under the action of the gravity of the body box and the tension of the adsorption spring, the air storage cover will move downward a certain distance. At this time, the volume of the lower cavity of the air storage cover continues to increase, and the air in the footrest cover can enter the lower cavity of the air storage cover through the connecting channel on the support rod and the air inlet hole on the support sleeve to achieve the balance of the air pressure in the lower cavity of the air storage cover. However, at this time, the footrest cover and the table will be in a negative pressure state, which can ensure the stability of the support rod, thereby effectively preventing the patient from inadvertently moving during treatment and causing the device to shake, avoiding the device from falling from the table, and ensuring the effectiveness of the medical staff's treatment of the patient.

[0016] 3. In this invention, when the body box is placed, the extension rod can slide downward with the cooperation of the buffer spring, so that the patch pad can be firmly attached to the patient's arm. The microphone can transmit the collected sound signal to the microprocessor, and then after being processed by the signal transmission module and the amplification circuit, the electrical signal can be transmitted to the sound storage device through the sound guide tube. When the medical doctor wears the stethoscope head, the patient's physical condition can be obtained through inference and analysis, or the electrical signal processed by the transmission module and the amplification circuit can be transmitted to the display for the patient to understand intuitively. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front view schematic diagram of the overall structure of a portable arteriovenous fistula auscultation terminal and auscultation system of the present invention; Figure 2 This is a rear view schematic diagram of the overall structure of a portable arteriovenous fistula auscultation terminal and auscultation system of the present invention; Figure 3 This is a bottom-up schematic diagram of the overall structure of a portable arteriovenous fistula auscultation terminal and auscultation system of the present invention; Figure 4 This is a schematic diagram of a top view and partial cross-section of a portable arteriovenous fistula auscultation terminal and auscultation system according to the present invention; Figure 5 A schematic diagram of a partially sectional side view of a portable arteriovenous fistula auscultation terminal and auscultation system according to the present invention; Figure 6 This is a schematic cross-sectional view of the gas storage cover of a portable arteriovenous fistula auscultation terminal and auscultation system of the present invention; Figure 7 This is a schematic diagram of the system connection framework of a portable arteriovenous fistula auscultation terminal and auscultation system of the present invention.

[0018] In the figure: 1. Body box; 2. Control box; 21. Slide; 22. Display; 3. Mounting box; 4. Limit rod; 5. Application pad; 51. Pickup; 6. Support mechanism; 61. Connecting rod; 62. Air storage cover; 621. Air outlet; 63. Support sleeve; 631. Air inlet; 632. Adsorption spring; 64. Support rod; 641. Connecting channel; 65. Foot pad; 7. Adjustment mechanism; 71. Positioning sleeve; 72. Positioning rod; 73. Adjustment worm gear; 74. Adjustment motor; 75. Adjustment worm; 8. Piston plate; 9. Buffer mechanism; 91. Buffer plate; 911. PCB circuit board; 92. Extension rod; 93. Buffer spring; 94. Sound guide tube; 95. Sound storage device; 96. Stethoscope head; 97. Battery; 98. Winding column. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0020] See also Figure 1-Figure 7 The present invention provides a technical solution for a portable arteriovenous fistula auscultation terminal and auscultation system, comprising a body box 1, a control box 2 fixedly mounted in the middle of the upper end surface of the body box 1, a mounting box 3 fixedly mounted on the front and rear end surfaces of the body box 1, a lower end surface of the body box 1 configured as an arc surface, a limit rod 4 slidably mounted on both the front and rear sides of the lower end surface of the body box 1, an application pad 5 fixedly mounted on the lower end surface of the limit rod 4, and further comprising: Support mechanism 6, the support mechanism 6 is arranged on the front and rear sides of the left and right side walls of the body box 1, and the support mechanism 6 is used to provide support for the body box 1; Adjustment mechanism 7, the adjustment mechanism 7 is arranged on the front and rear sides of the inner cavity of the body box 1, and the adjustment mechanism 7 is used to adjust the distance between the support mechanisms 6 on both sides; Adsorption mechanism, the adsorption mechanism is arranged on the left and right sides of the side wall of the body box 1, and the adsorption mechanism is used to improve the stability of the supporting mechanism 6; The buffer mechanism 9 is provided in the inner cavity of the control box 2 and is used to ensure that the patch 5 is stably attached to the arm.

[0021] Furthermore, the support mechanism 6 includes a connecting rod 61 slidably mounted on the left and right end surfaces of the body box 1, and an air storage cover 62 fixedly mounted on the side wall of the connecting rod 61. A support sleeve 63 is slidably mounted on the lower end surface of the air storage cover 62. A support rod 64 is threadedly mounted on the inner cavity of the support sleeve 63. A foot cover 65 is fixedly mounted on the lower end surface of the support rod 64. The adjustment mechanism 7 includes a positioning sleeve 71 rotatably mounted on the front and rear sides of the inner cavity of the body box 1. Positioning rods 72 are slidably mounted on the left and right sides of the positioning sleeve 71. A key and keyway connection structure is adopted between the positioning rod 72 and the positioning sleeve 71. The outer end of the positioning rod 72 is threaded and penetrates the body box 1 and is rotatably connected to the air storage cover 62. An adjusting worm gear 73 is fixedly mounted in the middle of the side wall of the positioning sleeve 71. An adjusting motor 74 is fixedly mounted on the bottom surface of the inner cavity of the mounting box 3 through a frame. An adjusting worm 75 is fixedly mounted on the output shaft end of the adjusting motor 74 through the mounting box 3. The adjusting worm 75 is meshed and connected with the adjusting worm wheel 73. The left and right ends of the positioning rod 72 have opposite thread directions.

[0022] It should be noted that, although the arm thickness of people of different statures may be different, the size and shape of the internal fistula under the skin of their arms are similar. Therefore, although the size of the body box 1 does not need to be adjusted during use, the height and distance of the support mechanism 6 will be adjusted according to the users of different arm thicknesses; medical personnel can start the adjustment motor 74 to operate, so that the adjustment worm 75 drives the adjustment worm wheel 73 to rotate. Since the adjustment worm wheel 73 is fixedly connected to the positioning sleeve 71, the positioning sleeve 71 can drive the positioning rod 72 to rotate (the positioning rod 72 and the positioning sleeve 71 are connected by a key, and the positioning sleeve 71 can drive the positioning rod 72 to rotate axially and can also The positioning rod 72 is made to slide in the inner cavity of the positioning sleeve 71), the positioning rod 72 is threadedly connected to the body box 1, and the left and right ends of the positioning rod 72 have opposite thread directions. At this time, the positioning rod 72 will shrink toward the inner cavity of the positioning sleeve 71. Under the restraining action of multiple groups of limit rods 4, the distance between the air storage covers 62 on the left and right sides will change to adjust the support distance of the foot pad cover 65; the support sleeve 63 is threadedly connected to the support rod 64, and the medical staff can lock the support sleeve 63 with one hand and rotate the support rod 64 with the other hand to adjust the height of the air storage cover 62, so that the entire device can be used by people with different arm thicknesses, greatly improving the practicality of the entire device.

[0023] Furthermore, the adsorption mechanism includes a piston plate 8 slidably mounted on the inner cavity of the air storage cover 62, a support sleeve 63 fixedly mounted on the lower end surface of the piston plate 8, a connecting channel 641 is opened in the inner cavity of the support rod 64, an air inlet hole 631 is opened on the upper side wall of the support sleeve 63, the support sleeve 63 is connected to the foot pad cover 65 through the air inlet hole 631 and the connecting channel 641, and an adsorption spring 632 is wound around the upper side wall of the support sleeve 63, one end of the adsorption spring 632 is fixedly mounted on the lower end surface of the piston plate 8, and the other end is fixedly mounted on the bottom surface of the inner cavity of the air storage cover 62; The inner cavity of the connecting channel 641 is provided with a one-way air valve with an outlet to the lower cavity of the air storage cover 62. The outer wall of the air storage cover 62 is provided with an air outlet hole 621, and the inner cavity of the air outlet hole 621 is provided with a one-way air valve with an outlet to the outside.

[0024] It should be noted that after the medical staff has adjusted the height of the body box 1, they place the patient's arm on the table, and then place the entire device above the patient's arm. At this time, the foot cover 65 will rest on the table. Under the action of the gravity of the body box 1 and the elastic force of the adsorption spring 632, the air storage cover 62 will move downward a certain distance. At this time, the volume of the lower cavity of the air storage cover 62 continues to increase, and the air in the foot cover 65 can enter the lower cavity of the air storage cover 62 through the connecting channel 641 on the support rod 64 and the air inlet hole 631 on the support sleeve 63, so as to achieve the balance of the air pressure in the lower cavity of the air storage cover 62. However, at this time, the foot cover 65 and the table will be in a negative pressure state, which can ensure the stability of the support rod 64, thereby effectively preventing the patient from inadvertently moving during treatment and causing the device to shake, avoiding the device from falling from the table, and ensuring the effectiveness of the medical staff's treatment of the patient.

[0025] Furthermore, the buffer mechanism 9 includes a buffer plate 91 slidably mounted in the inner cavity of the control box 2, and an extension rod 92 fixedly mounted on the lower end surface of the buffer plate 91. A buffer spring 93 is wound around the side wall of the extension rod 92. A slide groove 21 is formed on the rear end surface of the control box 2. The extension rod 92 is fixedly mounted on the upper end surface of the application pad 5, one end of the buffer spring 93 is fixedly mounted on the bottom surface of the inner cavity of the air storage cover 62, and the other end of the buffer spring 93 is fixedly mounted on the lower end surface of the buffer plate 91. The upper end surface of the buffer plate 91 is fixedly mounted with a PCB circuit board 911; A sound guide tube 94 is fixedly installed on the rear side of the upper end surface of the buffer plate 91, a sound storage device 95 is fixedly installed on the end of the sound guide tube 94, a stethoscope head 96 is fixedly installed on the side wall of the sound storage device 95, a battery 97 is fixedly installed on the front side of the upper end surface of the body box 1, a display 22 is fixedly installed on the upper end surface of the control box 2, a pickup 51 is fixedly installed on the side wall of the inner cavity of the application pad 5, the display 22, the PCB circuit board 911, the sound storage device 95 and the battery 97 are electrically connected, the sound guide tube 94 slides in the inner cavity of the slide groove 21, and a winding post 98 is fixedly installed on the rear side of the upper end surface of the body box 1.

[0026] It should be noted that when the body box 1 is placed, the extension rod 92 can slide downward with the cooperation of the buffer spring 93, so that the patch pad 5 can be firmly attached to the patient's arm (because only the audio at the fistula position is collected, the microphone 51 should not be too large. The patch pad 5 is to keep the device in contact with the arm. The microphone 51 can capture the Korotkoff sounds of blood flow changes in the blood vessels and combine with the audio transmission module to transmit the Korotkoff sounds through the wire). The microphone 51 can transmit the collected sound signal to the microprocessor, and then after processing by the signal transmission module and the amplification circuit, the electrical signal can be transmitted to the sound storage device 95 through the sound guide tube 94 (the sound storage device 95 can store the electrical signal in a storage card). When the medical doctor wears the stethoscope head 96 (that is, the audio player, the audio player is electrically connected to the amplification circuit), the patient's physical condition can be obtained through inference and analysis, or the electrical signal processed by the transmission module and the amplification circuit can be transmitted to the display 22 for intuitive understanding by the patient.

[0027] A stethoscope system for a portable arteriovenous fistula stethoscope terminal includes a stethoscope system module, which is composed of a microprocessor, a power module, an amplifying circuit module, and a signal transmission module. The microprocessor, power module, amplifying circuit module, and signal transmission module are all fixedly mounted on the upper end surface of a PCB circuit board 911, and the pickup 51, sound guide tube 94, power module, amplifying circuit module, and signal transmission module are all electrically connected to the microprocessor.

[0028] It should be noted that the power module provides energy to the microprocessor (control core), the microphone 51 transmits the sound signal to the microprocessor (control core), the microprocessor transmits the electrical signal to the signal transmission module (isolation and protocol conversion), the signal transmission module transmits the electrical signal to the amplifying circuit module (drive enhancement), the amplifying circuit module transmits the electrical signal to the power module (actuator), and the power module is the display 22 and the sound storage device 95.

[0029] Working principle: When working, medical personnel can start the adjustment motor 74 to make the adjustment worm 75 drive the adjustment worm wheel 73 to rotate. Since the adjustment worm wheel 73 is fixedly connected to the positioning sleeve 71, the positioning sleeve 71 can drive the positioning rod 72 to rotate (the positioning rod 72 and the positioning sleeve 71 are keyed, and the positioning sleeve 71 can drive the positioning rod 72 to rotate axially and also slide in the inner cavity of the positioning sleeve 71). The positioning rod 72 is threadedly connected to the body box 1, and the left and right ends of the positioning rod 72 have opposite thread directions. At this time, the positioning rod 72 will retract into the inner cavity of the positioning sleeve 71. Under the constraint of the multiple groups of limit rods 4, the distance between the air storage covers 62 on the left and right sides will change, so as to achieve the adjustment of the support distance of the footrest cover 65; the support sleeve 63 is threadedly connected to the support rod 64, and the medical personnel can lock the support sleeve 63 with one hand and rotate the support rod 64 with the other hand to adjust the height of the air storage cover 62, so that the entire device is suitable for people with different arm thicknesses, greatly improving the practicality of the entire device; After the medical staff has adjusted the height of the body box 1, they place the patient's arm on the table, and then place the entire device above the patient's arm. At this time, the footrest cover 65 will be against the table. Under the action of the gravity of the body box 1 and the elastic force of the adsorption spring 632, the air storage cover 62 will move downward a certain distance. At this time, the volume of the lower cavity of the air storage cover 62 continues to increase, and the air in the footrest cover 65 can enter the lower cavity of the air storage cover 62 through the connecting channel 641 on the support rod 64 and the air inlet hole 631 on the support sleeve 63 , to achieve equalization of the air pressure in the lower cavity of the gas storage cover 62. At this time, the space between the footrest cover 65 and the table will be in a negative pressure state, which can ensure the stability of the support rod 64, thereby effectively preventing the device from shaking due to inadvertent movement of the patient during treatment, preventing the device from falling from the table, and ensuring the effectiveness of the medical staff's treatment of the patient (after the treatment is completed, the medical staff can lift the body box 1 upward to allow the excess air in the lower cavity of the gas storage cover 62 to be discharged from the air outlet 621, making preparations for the next treatment); When the body box 1 is placed, the extension rod 92 can slide downward with the cooperation of the buffer spring 93, so that the patch pad 5 can be firmly attached to the patient's arm (because only the audio at the fistula position is collected, the microphone 51 should not be too large. The patch pad 5 is to keep the device in fit with the arm. The microphone 51 can capture the Korotkoff sounds of blood flow changes in the blood vessels, and combine with the audio transmission module to transmit the Korotkoff sounds through the wire). The microphone 51 can transmit the collected sound signal to the microprocessor, and then after processing by the signal transmission module and the amplification circuit, the electrical signal can be transmitted to the sound storage device 95 through the sound guide tube 94 (the sound storage device 95 can store the electrical signal in the storage card), and when the medical doctor wears the stethoscope head 96, the patient's physical condition can be obtained after inference and analysis, or the electrical signal processed by the transmission module and the amplification circuit can be transmitted to the display 22 for intuitive understanding by the patient.

[0030] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Simple modifications or equivalent substitutions of the technical solution of the present invention by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the present invention.

Claims

1. A portable arteriovenous fistula auscultation terminal, comprising a body box (1), a control box (2) fixedly mounted on the middle portion of the upper end surface of the body box (1), characterized in that: The front and rear end surfaces of the body box (1) are fixedly mounted with a mounting box (3); the lower end surface of the body box (1) is configured as an arc surface; limiting rods (4) are slidably mounted on both the front and rear sides of the lower end of the body box (1); and an application pad (5) is fixedly mounted on the lower end surface of the limiting rod (4). The body box further comprises: A support mechanism (6), the support mechanism (6) being arranged on the front and rear sides of the left and right side walls of the body box (1), and the support mechanism (6) being used to provide support for the body box (1); An adjusting mechanism (7), the adjusting mechanism (7) being arranged on the front and rear sides of the inner cavity of the body box (1), and the adjusting mechanism (7) being used to adjust the spacing between the supporting mechanisms (6) on both sides; An adsorption mechanism, the adsorption mechanism being arranged on the left and right sides of the side walls of the body box (1), and the adsorption mechanism being used to enhance the stability of the supporting mechanism (6); A buffer mechanism (9) is provided in the inner cavity of the control box (2), and the buffer mechanism (9) is used to ensure that the patch pad (5) is stably attached to the arm.

2. The portable arteriovenous fistula auscultation terminal according to claim 1, characterized in that: The support mechanism (6) comprises a connecting rod (61) slidably mounted on the left and right end surfaces of the body box (1), and an air storage cover (62) fixedly mounted on the side wall of the connecting rod (61), a support sleeve (63) being slidably mounted on the lower end surface of the air storage cover (62), a support rod (64) being threadedly mounted on the inner cavity of the support sleeve (63), and a foot pad cover (65) being fixedly mounted on the lower end surface of the support rod (64).

3. The portable arteriovenous fistula auscultation terminal according to claim 2, characterized in that: The regulating mechanism (7) comprises a positioning sleeve (71) rotatably mounted on the front and rear sides of the inner cavity of the body box (1), positioning rods (72) being slidably mounted on the left and right sides of the positioning sleeve (71), the outer ends of the positioning rods (72) being threadedly passed through the body box (1) and rotatably connected to the air storage cover (62), and an regulating worm gear (73) being fixedly mounted on the middle portion of the side wall of the positioning sleeve (71).

4. The portable arteriovenous fistula auscultation terminal according to claim 3, characterized in that: An adjusting motor (74) is fixedly mounted on the bottom surface of the inner cavity of the mounting box (3) through a frame, and an adjusting worm (75) is fixedly mounted on the output shaft end of the adjusting motor (74) through the mounting box (3). The adjusting worm (75) is meshedly connected with the adjusting worm wheel (73), and the left and right ends of the positioning rod (72) have opposite thread directions.

5. The portable arteriovenous fistula auscultation terminal according to claim 2, characterized in that: The adsorption mechanism includes a piston plate (8) slidably mounted in the inner cavity of the air storage cover (62), the support sleeve (63) is fixedly mounted on the lower end surface of the piston plate (8), the inner cavity of the support rod (64) is provided with a connecting channel (641), the upper side wall of the support sleeve (63) is provided with an air inlet hole (631), the support sleeve (63) is connected to the foot pad cover (65) through the air inlet hole (631) and the connecting channel (641), and an adsorption spring (632) is wound around the upper side wall of the support sleeve (63), one end of the adsorption spring (632) is fixedly mounted on the lower end surface of the piston plate (8), and the other end is fixedly mounted on the bottom surface of the inner cavity of the air storage cover (62).

6. The portable arteriovenous fistula auscultation terminal according to claim 5, characterized in that: The inner cavity of the connecting passage (641) is provided with a one-way air valve with an outlet to the lower cavity of the air storage cover (62), an air outlet hole (621) is provided on the outer wall of the air storage cover (62), and the inner cavity of the air outlet hole (621) is provided with a one-way air valve with an outlet to the outside.

7. The portable arteriovenous fistula auscultation terminal according to claim 1, characterized in that: The buffer mechanism (9) comprises a buffer plate (91) slidably mounted in the inner cavity of the control box (2), and an extension rod (92) fixedly mounted on the lower end surface of the buffer plate (91), a buffer spring (93) being wound around the side wall of the extension rod (92), and a slide groove (21) being provided on the rear end surface of the control box (2).

8. The portable arteriovenous fistula auscultation terminal according to claim 7, characterized in that: The extension rod (92) is fixedly mounted on the upper end surface of the application pad (5), one end of the buffer spring (93) is fixedly mounted on the bottom surface of the inner cavity of the air storage cover (62), and the other end of the buffer spring (93) is fixedly mounted on the lower end surface of the buffer plate (91), and the upper end surface of the buffer plate (91) is fixedly mounted with a PCB circuit board (911).

9. The portable arteriovenous fistula auscultation terminal according to claim 8, characterized in that: A sound guide tube (94) is fixedly mounted on the rear side of the upper end surface of the buffer plate (91), a sound storage device (95) is fixedly mounted on the end of the sound guide tube (94), a stethoscope head (96) is fixedly mounted on the side wall of the sound storage device (95), a battery (97) is fixedly mounted on the front side of the upper end surface of the body box (1), a display (22) is fixedly mounted on the upper end surface of the control box (2), a pickup (51) is fixedly mounted on the side wall of the inner cavity of the application pad (5), the display (22), the PCB circuit board (911), the sound storage device (95) and the battery (97) are electrically connected, the sound guide tube (94) slides in the inner cavity of the slide groove (21), and a winding post (98) is fixedly mounted on the rear side of the upper end surface of the body box (1).

10. An auscultation system for a portable arteriovenous fistula auscultation terminal according to any one of claims 1 to 9, characterized in that: The invention comprises an auscultation system module, wherein the auscultation system module is composed of a microprocessor, a power module, an amplifying circuit module, and a signal transmission module. The microprocessor, the power module, the amplifying circuit module, and the signal transmission module are all fixedly mounted on the upper end surface of a PCB circuit board (911), and the pickup (51), the sound guide tube (94), the power module, the amplifying circuit module, and the signal transmission module are all electrically connected to the microprocessor.

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