Internal fistula detection device and method of use thereof

Abstract

The present invention discloses a fistula detection device, comprising a detection body, a rubber round tube, a rigid tube and an audio player; the front end of the rubber round tube is fixedly connected to the detection body; the rear end of the rubber round tube is a bifurcated tube, and each branch of the bifurcated tube is sleeved with a rigid tube; the rear end of the rigid tube is connected to an audio player; the present invention detects the size of the blood flow sound of the patient's fistula through an audio sensor, and medical staff can intuitively understand the patency of the patient's arteriovenous fistula through the decibel size of the blood flow sound on the display, and then judge whether the patient needs further fistula detection; or the patient at home can intuitively understand the patency of his own arteriovenous fistula through the decibel size of the blood flow sound on the display to see whether further examination in the district hospital is needed.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and in particular relates to a fistula detection device and a use method thereof. Background Art

[0002] Hemodialysis is currently one of the main forms of renal replacement therapy, and good vascular access is the "lifeline" of hemodialysis patients. Unobstructed vascular access is an important guarantee for patients with end-stage renal disease to achieve long-term hemodialysis. However, during use, fistula occlusion is a common complication and even the main cause of death in patients with maintenance hemodialysis. Until now, autologous arteriovenous fistulas are still the most ideal vascular pathway for permanent vascular access in patients with maintenance hemodialysis. With the extension of dialysis survival and the aging of patients, up to 30% of such patients need to be hospitalized due to hemodialysis access failure, among which arteriovenous fistula stenosis and occlusion are the most common. Therefore, protecting the stenosis of arteriovenous fistulas and reducing the occurrence of stenosis and occlusion of fistula access are important factors that directly affect the survival and quality of life of patients.

[0003] The condition of the arteriovenous fistula is generally judged by listening to the size of the fistula blood flow sound, measuring the size of the fistula blood flow speed and the fistula tremor of the fistula to determine whether the fistula is abnormal. Before undergoing hemodialysis or arteriovenous fistula care, uremia patients usually need to rely on medical staff to detect and judge the patency of the patient's arteriovenous fistula, and whether the fistula passage is narrowed or occluded, so that they can seek medical treatment in time; when the number of patients undergoing hemodialysis or arteriovenous fistula care is large, the existing ordinary stethoscope takes a long time to judge, with low accuracy, and cannot detect the patency of the patient's arteriovenous fistula in time. Failure to detect fistula occlusion in time will cause irreversible damage or even death to the patient. At the same time, the ordinary stethoscope has a small range of application. Patients at home cannot use ordinary stethoscopes to judge whether they need to go to the hospital for further examination, causing more trouble between doctors and patients. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a fistula detection device and a method of using the device which can quickly judge, has a wide range of adaptability and is flexible and convenient.

[0005] In order to achieve the above object, the technical solution of the present invention is as follows:

[0006] An internal fistula detection device comprises a detection body, a rubber round tube, a rigid tube and an audio player; the front end of the rubber round tube is fixedly connected to the detection body; the rear end of the rubber round tube is a bifurcated tube, and each branch of the bifurcated tube is sleeved with a rigid tube; the rear end of the rigid tube is connected to the audio player;

[0007] The detection body comprises a shell, an ultrasonic sensor, a blood flow sensor and an audio sensor; the shell is cylindrical; a circuit board is installed in the shell; an ARM processor, a storage, a digital decoder and a filter are installed on the circuit board; the ARM processor is electrically connected to the power supply, the storage, the digital decoder, the ultrasonic sensor, the blood flow sensor and the audio sensor respectively; the ultrasonic sensor, the blood flow sensor and the audio sensor are installed at the lower end of the shell respectively; the filter is electrically connected to the digital decoder and the audio player respectively; a display screen is installed at the upper end of the shell; the display screen is electrically connected to the ARM processor;

[0008] The housing is provided with a switch; the switch is embedded in one side of the housing; the power supply is electrically connected to the switch;

[0009] A playback button is provided on the other side of the shell; the playback button is electrically connected to the audio player.

[0010] As a further technical improvement, a volume adjustment button is provided on the side of the housing; the volume adjustment button is connected to the audio player. The volume adjustment button can adjust the volume of the audio player. At the same time, when the medical staff or the patient presses the playback button, the audio records saved in the recent time period will be displayed on the display screen. The medical staff or the patient presses the volume adjustment button to select the audio to be reviewed. The audio can only be stored in the storage for one week and will be automatically deleted after one week, and the storage capacity is automatically controlled.

[0011] As a further technical improvement, a charging connector is installed on the side of the shell.

[0012] As a further technical improvement, an elastic steel tube is installed in the bifurcated tube. The elasticity of the elastic steel tube makes it convenient for medical staff or patients to hang the entire device around their necks.

[0013] Method for using the above-mentioned fistula detection device:

[0014] Before the test: the medical staff or the patient puts on the audio player, holds the front end of the rubber tube, and puts the side of the shell with the sensor installed close to the patient's upper limb skin; Start the test: Press the switch once to start the measurement, the audio sensor receives the blood flow sound, and then transmits it to the ARM processor for calculation to determine the size of the blood flow sound and then transmits it to the display screen, which is displayed in the form of decibel value for reference by the doctor or patient; at the same time, the ARM processor transmits the audio of the blood flow sound to the digital decoder and filter in turn, and stores the audio after decoding and filtering out the noise into the storage; after the storage is completed, the display screen shows that it has been stored, and the doctor The medical staff or patient presses the switch twice in succession, and the decoded and filtered audio is played on the audio player for the medical staff or patient to judge whether it is abnormal; if the medical staff or patient feels that listening once is not enough, they need to listen again, and can press the playback button to listen to the audio repeatedly; the blood flow sensor detects the blood flow velocity of the fistula, transmits the blood flow velocity of the fistula to the ARM processor for calculation and analysis, and then displays it on the display screen in the form of a numerical value; at the same time, the ultrasonic sensor detects the tremor of the fistula, transmits the data of the tremor of the fistula to the ARM processor for calculation and analysis, and then displays it on the display screen in the form of a numerical value. Judgment: The medical staff or patient judges whether it is within the normal range based on the decibel value, blood flow velocity value and the size of the fistula tremor, and then chooses whether further testing is needed.

[0015] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0016] 1. The present invention detects the sound of blood flow in the patient's arteriovenous fistula through an audio sensor. Medical staff can intuitively understand the patency of the patient's arteriovenous fistula through the decibel size of the blood flow sound on the display, and then determine whether the patient needs further fistula testing; or patients at home can intuitively understand the patency of their own arteriovenous fistula through the decibel size of the blood flow sound on the display, and accurately determine whether further examination is needed in the district hospital.

[0017] 2. The present invention detects the tremor of the arteriovenous fistula through an ultrasonic sensor, which is convenient for medical personnel to judge and take timely countermeasures. Patients at home can intuitively understand the patency of their own arteriovenous fistula through the size of the tremor of the arteriovenous fistula on the display, and accurately judge whether they need to go to the hospital for further examination.

[0018] 3. The present invention detects the blood flow velocity of arteries and veins through a blood flow sensor and displays it on a display, thereby providing more accurate judgment data for medical staff or patients at home to make corresponding preparations.

[0019] 4. The present invention can save the audio after detection by adding a storage device. Even if the medical staff leaves the patient and returns to their work place, the medical staff can still press the playback button to selectively review the detection records and make accurate judgments. The operation is simple, can effectively avoid hidden dangers and omissions, and reduce the risk of fistula occlusion in patients.

[0020] 5. The present invention has a light and compact structure, is easy to carry, is suitable for both patients and medical staff, and is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0022] Figure 2 It is a schematic diagram of the front structure of the present invention.

[0023] Figure 3 Schematic diagram of the internal structure of the detection body of the present invention.

[0024] Figure 4 This is a circuit principle block diagram of the present invention.

[0025] Figure ID:

[0026] 1-shell, 2-rubber round tube, 3-rigid tube, 4-audio player, 11-power supply, 12-ultrasonic sensor, 13-blood flow sensor, 14-audio sensor, 15-filter, 16-storage, 17-ARM processor, 18-display screen, 19-switch, 20-playback button, 21-volume adjustment button, 22-digital decoder, 23-charging connector, 24-forked tube. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the accompanying drawings.

[0028] Embodiment 1:

[0029] An internal fistula detection device comprises a detection body, a rubber round tube 2, a rigid tube 3 and an audio player 4; the front end of the rubber round tube 2 is fixedly connected to the detection body; the rear end of the rubber round tube 2 is a bifurcated tube 21, and each branch of the bifurcated tube 21 is sleeved with a rigid tube 3; the rear end of the rigid tube 3 is connected to the audio player 4;

[0030] The detection body includes a shell 1, an ultrasonic sensor 12, a blood flow sensor 13 and an audio sensor 14; the shell 1 is cylindrical; a circuit board is installed in the shell 1; an ARM processor 17, a storage 16, a digital decoder 22 and a filter 15 are installed on the circuit board respectively; the ARM processor 17 is electrically connected to the power supply 11, the storage 16, the digital decoder 22, the ultrasonic sensor 12, the blood flow sensor 13 and the audio sensor 14 respectively; the ultrasonic sensor 12, the blood flow sensor 13 and the audio sensor 14 are respectively installed at the lower end of the shell 1; the filter 15 is electrically connected to the digital decoder 22 and the audio player 4 respectively; a display screen 18 is installed at the upper end of the shell 1; the display screen 18 is electrically connected to the ARM processor 17.

[0031] The housing 1 is provided with a switch 19; the switch 19 is embedded and installed on one side of the housing 1; the power source 11 is electrically connected to the switch 19;

[0032] A playback button 20 is disposed on the other side of the housing 1 ; the playback button 20 is electrically connected to the audio player 4 .

[0033] Before the test: the medical staff or the patient wears the audio player 4 on the ear, grasps the front end of the rubber tube 2, and puts the side of the shell 1 with the sensor installed close to the skin of the patient's upper limb; start the test: press the switch 19 once to start the measurement, the audio sensor 14 receives the blood flow sound, and then transmits it to the ARM processor 17 for calculation and judgment of the size of the blood flow sound, and then transmits it to the display screen 18, which is displayed in the form of decibel value for reference by the doctor or patient; at the same time, the ARM processor 18 transmits the audio of the blood flow sound to the digital decoder 22 and the filter 15 in turn, and the audio after decoding and filtering out the noise is stored in the storage 16; after the storage is completed, the display screen 18 displays the stored Storage, the medical staff or patient presses the switch 19 twice in a row, and the decoded and filtered audio is played on the audio player 4 for the medical staff or patient to judge whether it is abnormal; if the medical staff or patient feels that listening once is not enough, and needs to listen again, they can press the playback button 20 to repeat the audio; the blood flow sensor 13 detects the blood flow velocity of the fistula, transmits the blood flow velocity of the fistula to the ARM processor 17 for calculation and analysis, and then displays it on the display screen 18 in the form of a numerical value; at the same time, the ultrasonic sensor 12 detects the tremor of the fistula, transmits the data of the tremor of the fistula to the ARM processor 17 for calculation and analysis, and then displays it on the display screen in the form of a numerical value. Judgment: The medical staff or patient judges whether it is within the normal range based on the decibel value, blood flow velocity value and the size of the fistula tremor, and then chooses whether further detection is needed.

[0034] Embodiment 2:

[0035] The difference from the embodiment 1 is that a volume adjustment button 21 is provided on the side of the housing 1; the volume adjustment button 21 is connected to the audio player 4. The volume adjustment button 21 can adjust the volume of the audio player 4. At the same time, when the medical staff or the patient presses the playback button 20, the display screen 18 will display the audio records saved in the recent time period. The medical staff or the patient presses the volume adjustment button 21 to select the audio to be reviewed. The audio can only be stored in the storage 16 for one week and automatically deleted after one week, and the capacity of the storage 16 is automatically controlled.

[0036] The working principle of this embodiment is the same as that of Embodiment 1.

[0037] Embodiment 3:

[0038] The difference from Example 2 is that a charging connector 23 is installed on the side of the shell 1.

[0039] An elastic steel tube is installed in the bifurcated tube 24. The elasticity of the elastic steel tube makes it convenient for medical staff or patients to hang the entire device around their necks.

[0040] The working principle of this embodiment is the same as that of Embodiment 2.

Claims

1. A fistula detection device, characterized in that: It comprises a detection body, a rubber round tube (2), a rigid tube (3) and an audio player (4); the front end of the rubber round tube (2) is fixedly connected to the detection body; the rear end of the rubber round tube (2) is a bifurcated tube (24), and each branch of the bifurcated tube (24) is sleeved with a rigid tube (3); the rear end of the rigid tube (3) is connected to the audio player (4); The detection body comprises a shell (1), an ultrasonic sensor (12), a blood flow sensor (13) and an audio sensor (14); the shell (1) is cylindrical; a circuit board is installed in the shell (1); an ARM processor (17), a storage device (16), a digital decoder (22) and a filter (15) are installed on the circuit board; the ARM processor (17) is electrically connected to the power supply (11), the storage device (16), the digital decoder (22), the ultrasonic sensor (12), the blood flow sensor (13) and the audio sensor (14); the ultrasonic sensor (12), the blood flow sensor (13) and the audio sensor (14) are installed at the lower end of the shell (1); the filter (15) is electrically connected to the digital decoder (22) and the audio player (4); a display screen (18) is installed at the upper end of the shell (1); the display screen (18) is electrically connected to the ARM processor (17); The housing (1) is provided with a switch (19); the switch (19) is embedded and installed on one side of the housing (1); the power source (11) is electrically connected to the switch (19); A playback button (20) is provided on the other side of the housing (1); the playback button (20) is electrically connected to the audio player (4); A volume adjustment button (21) is provided on the side of the housing (1); the volume adjustment button (21) is connected to the audio player (4); A charging connector (23) is installed on the side of the housing (1); An elastic steel pipe is installed in the bifurcated pipe (24).

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